KR102144822B1 - Fold lift up door drive system that enables manual switching of fold lift up door - Google Patents

Abstract

Disclosed is a fold lift-up door driving system to enable conversion for manual opening/closing of a fold lift-up door and, more specifically, to a fold lift-up door driving system to enable conversion for manual opening/closing of a fold lift-up door, comprising: a fold lift-up door in which an upper door and a lower door are vertically folded around a pivot means between the upper door and the lower door; a pair of motor cylinders which are connected to both sides of the upper door or the lower door, allow a piston rod to be stretched such that the fold lift-up door may be folded and opened, and allow the piston rod to be contracted such that the folded fold lift-up door may be unfolded before the fold lift-up door is closed; a connecting shaft which connects each of the motor cylinders such that the pair of motor cylinders may be operated after being linked with each other; a sub motor of which a driving shaft is connected to a screw of at least one motor cylinder to provide driving power thereto so as to operate the motor cylinder; a clutch accommodating housing arranged between the motor cylinders and the sub motor to accommodate the driving shaft of the sub motor therein; and a manual opening/closing conversion means which is constructed to be connected to the driving shaft of the sub motor through the clutch accommodating housing, and manually rotates the driving shaft of the sub motor to enable conversion such that the fold lift-up door may be manually opened/closed.

Description

FOLD LIFT UP DOOR DRIVE SYSTEM THAT ENABLES MANUAL SWITCHING OF FOLD LIFT UP DOOR}

The present invention relates to a fold lift-up door drive system, and more particularly, to a fold lift-up door drive system capable of switching to manual opening and closing.

Fold lift-up doors that open and close while being folded or unfolded are installed and used in large hangars.

However, since the conventional fold lift-up door system is installed and used to be driven only automatically, the fold lift-up door is opened in case of an emergency situation such as interruption of the power supply system of the hangar or failure of the drive device that drives the fold lift-up door. It couldn't be controlled immediately, and the fold lift-up door had to be controlled after time had elapsed for power system repair or drive repair. That is, in the conventional fold lift-up door system, only electronic control was possible, but manual control was not possible.

US Patent Publication US4,545,418

Accordingly, an object to be solved by the present invention is to provide a fold lift-up door drive system that enables manual opening and closing of the fold lift-up door by easily manually switching the opening and closing of the fold lift-up door in an emergency.

In the fold lift-up door drive system capable of manually opening and closing the fold lift-up door according to an embodiment of the present invention, the upper door and the lower door are folded vertically around a pivot means between the upper door and the lower door. Fold lift-up door; It is connected to both sides of the upper door or the lower door, and the piston rod is extended so that the fold lift-up door is folded to open, and the piston rod is retracted to open the folded fold lift-up door and the fold lift-up door is closed. A pair of electric cylinders; A connection shaft connecting each of the electric cylinders so that the pair of electric cylinders are operated in conjunction with each other; A drive shaft is connected to a screw of any one of the electric cylinders to transmit power to drive the electric cylinder; A clutch receiving housing disposed between the electric cylinder and the sub-motor and accommodating a drive shaft of the sub-motor therein; And a manual opening/closing switching means configured to be connected to the drive shaft of the sub-motor through the clutch receiving housing, and manually rotating the drive shaft of the sub-motor to manually open and close the fold lift-up door. To do.

In one embodiment, the manual opening/closing switching means includes a manual power shaft and a clutch receiving housing having a partial length penetrating into the clutch receiving housing at one side of the clutch receiving housing and disposed perpendicular to the axial direction of the drive shaft. A passive power transmission device including a passive power rotation gear coupled to the passive power shaft from the inside to be rotatable together with the passive power shaft and provided to be spaced apart from the drive shaft of the sub-motor by a predetermined distance; A clutch for manual power connection installed on the drive shaft inside the clutch receiving housing, rotating together with the drive shaft, provided to be able to move forward and backward on the drive shaft, and spaced apart from the manual power rotation gear on the drive shaft in normal times; It is rotatably installed on the other side of the clutch receiving housing, and when rotated in a first direction, the clutch for manual power connection moves forward so as to mesh with the manual power rotary gear, and when rotated in a second direction, the clutch for manual power connection is rotated in the second direction. A manual switching lever connected to the clutch for manual power connection so as to be spaced apart from the manual power rotating gear; A wire for manual switching connected to the manual switching lever to rotate the manual switching lever in the first direction; A return wire connected to the manual shift lever to rotate the manual shift lever in the second direction; A first sprocket coupled to one side of the manual power shaft protruding outward of the clutch receiving housing; A second sprocket disposed to be spaced apart from the first sprocket by a predetermined distance and connected to the first sprocket through a chain; And it may include a handle for rotating the second sprocket.

In one embodiment, the clutch for manual power connection may be provided in the form of a gear meshing with the manual power rotation gear.

According to the fold lift-up door driving system according to the present invention, there is an advantage that manual opening and closing of the fold lift-up door can be made possible by easily switching the opening and closing of the fold lift-up door manually in an emergency.

1A and 1B are diagrams showing the configuration of a fold lift-up door driving system according to an embodiment of the present invention.
FIG. 2 is a view showing an installation state of the fold lift-up door when the fold lift-up door shown in FIG. 1 is closed.
3A and 3B are views for explaining a manual switching means of a fold lift-up door drive system according to an embodiment of the present invention.
4 is a view showing a state in which the fold lift-up door shown in FIG. 1A is opened.

Hereinafter, a fold lift-up door driving system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the present invention, various modifications may be made and various forms may be applied, and specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. In describing each drawing, similar reference numerals have been used for similar elements. In the accompanying drawings, the dimensions of the structures are shown to be enlarged than the actual size for clarity of the present invention.

Terms such as first and second may be used to describe various elements, but the elements should not be limited by the terms. These terms are only used for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component.

The terms used in the present application are used only to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, elements, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

1A and 1B are diagrams showing the configuration of a fold lift-up door driving system according to an embodiment of the present invention, and FIG. 2 is an installation of the fold lift-up door when the fold lift-up door shown in FIG. 1A is closed. 3A to 3C are views for explaining the manual opening/closing switching means of the fold lift-up door drive system according to an embodiment of the present invention, and FIG. 4 is a fold lift-up door shown in FIG. 1A. Is a view showing an open state.

1 to 3C, a fold lift-up door drive system capable of manually opening and closing a fold lift-up door according to an embodiment of the present invention includes a fold lift-up door 110 and a pair of electric cylinders 120 , A connection shaft 130, a sub-motor 140, a clutch receiving housing 150, and a manual switching means 160.

The fold lift-up door 110 includes an upper door 111 and a lower door 112, and the upper door 111 and the pivot means 113 between the upper door 111 and the lower door 112 The lower door 112 may be configured to be folded in the vertical direction. The upper door 111 and the lower door 112 may be folded in the vertical direction while sliding along the door frame frame 10 around the indoor or outdoor entrance where the fold lift-up door 110 is installed.

A pair of electric cylinders 120 are connected to both sides of the upper door 111 or the lower door 112, and the piston rod 121 is extended so that the fold lift-up door 110 is folded and opened, and the piston rod 121 ) May be configured such that the folded fold lift-up door 110 is opened and the fold lift-up door 110 is closed. The electric cylinder 120 may be configured such that the piston rod 121 is extended and contracted by rotating a screw (not shown), and the configuration of this electric cylinder is the same or similar to that of a conventional electric cylinder, so a more detailed description Will be omitted. As an example, in a pair of electric cylinders 120, the piston rod 121 is connected to both sides of the upper door 111, and the cylinder portion 122 accommodating a screw (not shown) is rotatable on the door frame 10 Can be connected.

The connection shaft 130 may connect each of the electric cylinders 120 so that the pair of electric cylinders 120 operate in conjunction with each other. For example, the connection shaft 130 may be connected between the cylinder portions 122 of each electric cylinder 120.

The sub-motor 140 may be connected to a drive shaft 141 to transmit power to a screw of any one of the electric cylinders 120 to drive the electric cylinder 120. There is no particular limitation on the structure in which the submotor 140 is connected to the screw of the cylinder 120, and may be, for example, a worm wheel and worm gear, or a belt and pulley structure.

The clutch receiving housing 150 is disposed between the electric cylinder 120 and the sub-motor 140, and may accommodate the drive shaft 141 of the sub-motor 140 therein. As an example, the clutch receiving housing 150 may be provided in a rectangular parallelepiped shape in which two surfaces perpendicular to the axial direction of the driving shaft 141 of the submotor 140 are opened.

The manual switching means 160 is configured to be connected to the drive shaft 141 of the sub-motor 140 through the clutch receiving housing 150, and rotates the drive shaft 141 of the sub-motor 140 manually. The fold lift-up door 110 can be switched to open and close manually. Manual switching means 160 is shown in detail in Figures 3a and 3b.

For example, the manual switching means 160 is a manual power transmission device 161, a clutch for manual power connection 162, a manual switching lever 163, a wire for manual switching 164, a wire for return (165), It may include a first sprocket 166, a second sprocket 167 and a handle 168.

The manual power transmission device 161 may include a manual power shaft 1611 and a manual power rotation gear 1612.

The manual power shaft 1611 may be disposed so that a part of the length at one side of the clutch receiving housing 150 penetrates into the inside of the clutch receiving housing 150 and is perpendicular to the axial direction of the drive shaft 141.

The manual power rotation gear 1612 is coupled to the manual power shaft 1611 inside the clutch receiving housing 150 and can rotate together with the manual power shaft 1611, and the drive shaft 141 of the submotor 140 is It may be provided to be spaced a certain distance.

The clutch 162 for manual power connection is installed on the drive shaft 141 of the submotor 140 inside the clutch receiving housing 150 and rotates together with the drive shaft 141, and moves forward and backward on the drive shaft 141. It is provided as possible, and may be spaced apart from the manual power rotating gear 1612 on the drive shaft 141 in normal times.

The manual power connection clutch 162 may be provided in the form of a gear meshing with the manual power rotation gear 1612. For example, the manual power rotating gear 1612 and the manual power connection clutch 162 may each have a bevel gear structure.

The manual switching lever 163 is rotatably installed on the other side of the clutch receiving housing 150, and when rotated in the first direction, the clutch 162 for manual power connection is moved forward in engagement with the manual power rotating gear 1612, When rotating in a second direction, which is a reverse direction of the first direction, the clutch 162 for manual power connection may be connected to the clutch 162 for manual power connection so as to separate it from the manual power rotation gear 1612. There is no particular limitation in the structure in which the manual switching lever 163 is connected to advance and reverse the manual power connection clutch 162, and the manual power connection clutch 162 is on the drive shaft 141 of the submotor 140 It can be variously implemented by those skilled in the art with a structure capable of forward and backward.

The manual switching wire 164 may be connected to the manual switching lever 163 to rotate the manual switching lever 163 in the first direction. As an example, the manual switching wire 164 may be disposed to be located on the right side of the manual switching lever 163 when viewed in front of the manual switching lever 163.

The return wire 165 may be connected to the manual switching lever 163 to rotate the manual switching lever 163 in the second direction. As an example, the return wire 165 may be disposed to be located on the left side of the manual switching lever 163 when viewed in front of the manual switching lever 163.

The first sprocket 166 may be coupled to one side of the manual power shaft 1611 protruding outward of the clutch receiving housing 150.

The second sprocket 167 is disposed to be spaced apart from the first sprocket 166 by a predetermined distance, and may be connected to the first sprocket 166 through the chain 20. For example, the second sprocket 167 may be located close to the ground.

The handle 168 may rotate the second sprocket 167. For example, a handle connecting shaft 168a is provided at the center of the second sprocket 167, and the handle 168 is coupled to the handle connecting shaft 168a to rotate the handle 168 to rotate the second sprocket 167 It can be configured to be.

Hereinafter, a process of opening and closing the fold lift-up door 110 of the fold lift-up door driving system capable of manually opening and closing the fold lift-up door according to an embodiment of the present invention and a manual conversion process will be described.

In the fold lift-up door 110, when the sub-motor 140 rotates forward, the rotational force of the sub-motor 140 is transmitted to the screw of the electric cylinder 120, and the screw is rotated forward and the piston rod 121 of the electric cylinder 120 ) Pushes the upper door 111 while being pushed, and the lower door 112 rotates around the pivot means 113 to be folded in the direction of the upper door 111 while the upper door 111 is pushed and raised. It opens like this.

Conversely, when the fold lift-up door 110 is to be closed, the sub-motor 140 rotates in reverse, and when the sub-motor 140 rotates in reverse, the rotational force of the sub-motor 140 is transmitted to the screw of the electric cylinder 120. As the screw is rotated reversely, the piston rod 121 of the electric cylinder 120 is contracted and the upper door 111 is pulled and lowered, and the upper door 111 is lowered, with the pivot means 113 as the center of the lower door 112 ) Rotates and spreads away from the upper door 111 and descends, so that the fold lift-up door 110 is closed.

In the case of manually opening and closing the fold lift-up door 110, when the administrator pulls the manual switching wire 164 downward so that the manual switching lever 163 rotates in the first direction, for example, clockwise, The clutch 162 for manual power connection advances on the drive shaft 141 of the sub-motor 140 and engages with the manual power rotation gear 1612 of the manual power transmission device 161.

In this state, the administrator rotates the handle 168 in a forward direction, for example, clockwise, the second sprocket 167 rotates, and when the second sprocket 167 rotates, the first sprocket connected through the chain 20 The clutch for manual power connection engaged with the manual power shaft 1611 as the 166 rotates in conjunction with the first sprocket 166 and the manual power shaft 1611 rotates, and the manual power shaft 1611 rotates. The 162 rotates together to rotate the drive shaft 141 in the forward direction. As a result, the screw of the electric cylinder 120 connected to the drive shaft 141 rotates forward and the piston rod 121 is extended, thereby opening the fold lift-up door 110.

In the case of manually closing the fold lift-up door 110, when the handle 168 is rotated in the reverse direction, for example, counterclockwise, the second sprocket 167 rotates reversely, and the second sprocket 167 is When rotating in the reverse direction, the first sprocket 166 connected through the chain 20 interlocks to rotate in reverse, and the manual power shaft 1611 rotates in reverse with the first sprocket 166, and the manual power shaft 1611 interlocks. Accordingly, as the manual power shaft 1611 rotates, the clutch 162 for manual power connection engaged with the manual power shaft 1611 rotates in a reverse direction to rotate the drive shaft 141 in the reverse direction. As a result, the screw of the electric cylinder 120 connected to the drive shaft 141 rotates reversely, and the piston rod 121 contracts, thereby closing the fold lift-up door 110.

When the fold lift-up door drive system capable of manually opening and closing the fold lift-up door according to an embodiment of the present invention is used, the power of the building in which the fold lift-up door 110 is installed is cut off, or the sub-motor 140 There is an advantage in that manual opening and closing of the fold lift-up door 110 can be made possible by easily switching the opening and closing of the fold lift-up door 110 in an emergency such as a failure of the fold.

On the other hand, the manual power connection clutch 162 of the fold lift-up door drive system capable of manual opening and closing of the fold lift-up door according to an embodiment of the present invention, the wire 164 for manual switching, and the wire for return 166 An antifouling coating layer made of an antifouling coating composition may be applied to the outer surface so as to effectively prevent adhesion and removal of pollutants.

The antifouling coating composition contains cocamidopropylbetaine and amphoglycinate in a molar ratio of 1:0.01 to 1:2, and the total content of cocamidopropylbetaine and amphoglycinate is 1 to 10% by weight.

The cocamidopropylbetaine and amphoglycinate are preferably 1:0.01 to 1:2 as a molar ratio, and if the molar ratio is out of the above range, the clutch for manual power connection 162, the wire for manual switching (164), and return There is a problem in that the coating property of the dragon wire 166 is deteriorated or the surface moisture adsorption increases after application, and the coating film is removed.

The cocamidopropylbetaine and amphoglycinate are preferably 1 to 10% by weight in the total composition aqueous solution, and if less than 1% by weight, the clutch for manual power connection 162, the wire for manual conversion (164), and wire for return There is a problem in that the coating property of (166) is deteriorated, and when it exceeds 10% by weight, crystal precipitation is likely to occur due to an increase in the coating film thickness.

On the other hand, as a method of applying the present anti-fouling coating composition to the clutch 162 for manual power connection, the wire 164 for manual switching, and the wire 166 for return, it is preferable to apply it by a spray method. In addition, the thickness of the final coating film of the manual power connection clutch 162, the manual switching wire 164, and the return wire 166 is preferably 550 ~ 2000Å, more preferably 1100 ~ 1900Å. If the thickness of the coating film is less than 550 Å, there is a problem of deterioration in the case of high-temperature heat treatment, and if it exceeds 2000 Å, crystal precipitation on the coated surface is liable to occur.

In addition, the present antifouling coating composition may be prepared by adding 0.1 mol of cocamidopropylbetaine and 0.05 mol of amphoglycinate to 1000 ml of distilled water, followed by stirring.

On the other hand, the surface of the manual power rotating gear 1612 and the first and second sprockets 166 and 167 is coated with a corrosion protection layer to prevent corrosion of the metal surface, and the surface coating material is Guanadino Benzoimidazole 20 Consisting of wt%, oxycarboxylic acid leaves 15 wt%, imidazoline thione 10 wt%, hafnium 15 wt%, molybdenum emulsified (MoS2) 10 wt%, aluminum oxide 25 wt%, diglycidyl aniline 5 wt%, The coating thickness can be formed to 7㎛.

Guanadino benzoimidazole, oxycarboxylic acid leaves, imidazoline thione and diglycidyl aniline play a role in preventing corrosion and discoloration.

Hafnium is a transition metal element with corrosion resistance and plays a role in having excellent waterproof and corrosion resistance.

Molybdenum emulsified plays a role of imparting wetness and lubricity to the surface of the coating film.

Aluminum oxide is added for the purpose of fire resistance and chemical stability.

The reason why the ratio of the constituent components and the coating thickness were numerically limited as described above was analyzed by the present inventors through the test results several times, and as a result, the optimum corrosion prevention effect was exhibited at the ratio.

In addition, a metal mesh foam may be attached to the outer surface of the submotor 140. This metal mesh foam is in the form of a metal mesh foam with pores. Such a metal mesh foam may be configured in such a way that a temperature change layer is applied to penetrate the surface of the metal mesh foam.

In the thermochromic layer, two or more thermochromic materials that change color when the temperature reaches a predetermined temperature or higher are applied to the surface of the metal mesh foam and are separated into two or more sections according to the temperature change, so that a stepwise temperature change can be determined. A protective layer may be applied on the thermochromic layer to prevent damage to the thermochromic layer.

Here, the thermochromic layer may be formed by applying a thermochromic material having a discoloration temperature of 40°C or more and 60°C or more, respectively. The temperature change layer is for detecting a temperature change of the sub-motor 140 by changing color according to the temperature of the sub-motor 140 that is indirectly heated as the internal temperature rises by the heater unit. The temperature of the sub-motor 140 is transmitted to the metal mesh foam, and the temperature change layer reacts according to the temperature change of the metal mesh foam, and as a result, the temperature change of the sub-motor 140 can be sensed.

The thermochromic layer may be formed by applying a thermochromic material that changes color when the temperature reaches a predetermined temperature or higher on the surface of the metal mesh foam. In addition, the thermochromic layer is generally composed of a microcapsule structure of 1 to 10 µm, and can be colored and transparent due to the binding and separation phenomena of the electron donor and the electron acceptor according to the temperature in the microcapsule.

In addition, the color change layer has a fast color change, and may have various color change temperatures such as 40°C, 60°C, 70°C, 80°C, and the like, and the color change temperature can be easily adjusted in various ways. The thermochromic layer may use various types of thermochromic materials based on the principle of molecular rearrangement of organic compounds and spatial rearrangement of atomic groups.

To this end, it is preferable that the thermochromic layer is formed to be separated into two or more sections according to temperature changes by applying two or more thermochromic materials having different discoloration temperatures. It is preferable to use a thermochromic material having a relatively low discoloration temperature and a thermochromic material having a relatively high discoloration temperature, and more preferably, a discoloration temperature of 40℃ or more and 60℃ or more. A thermochromic layer can be formed by using a thermochromic material.

Through this, it is possible to check the temperature change of the sub-motor 140 to detect the temperature change of the sub-motor 140, and accordingly, visually check whether the current sub-motor 140 is in a normal driving state or overheated state. There is an advantage that can be easily checked.

In addition, the protective film layer is applied on the thermochromic layer to prevent damage to the thermochromic layer due to external impact, and at the same time, it is easy to check whether the thermochromic layer is discolored, and at the same time consider that the thermochromic material is weak to heat, it has an insulation effect. It is preferable to use a transparent coating material.

The description of the presented embodiments is provided to enable any person skilled in the art to use or implement the present invention. Various modifications to these embodiments will be apparent to those of ordinary skill in the art, and the general principles defined herein can be applied to other embodiments without departing from the scope of the present invention. Thus, the present invention is not to be limited to the embodiments presented herein, but is to be interpreted in the widest scope consistent with the principles and novel features presented herein.

110: fold lift-up door 120: electric cylinder
130: connection shaft 140: sub motor
150: clutch receiving housing 160: manual switching means

Claims (3)

A fold lift-up door 110 in which the upper door 111 and the lower door 112 are folded vertically around the pivot means 113 between the upper door 111 and the lower door 112;
The fold is connected to both sides of the upper door 111 or the lower door 112, the piston rod 121 is extended so that the fold lift-up door 110 is folded and opened, and the piston rod 121 is contracted and folded A pair of electric cylinders 120 to close the fold lift-up door 110 while the lift-up door 110 is unfolded;
A connection shaft 130 connecting each of the electric cylinders 120 so that the pair of electric cylinders 120 are operated in conjunction with each other;
The drive shaft 141 is connected to the screw of any one of the electric cylinders 120 so as to be able to transmit power to the sub-motor 140 for driving the electric cylinder 120;
A clutch accommodating housing 150 disposed between the electric cylinder 120 and the sub-motor 140 and accommodating the drive shaft 141 of the sub-motor 140 therein; And
The fold lift-up door 110 is configured to be connected to the drive shaft 141 of the sub-motor 140 through the clutch receiving housing 150 and rotates the drive shaft 141 of the sub-motor 140 manually. And a manual switching means 160 for switching to be manually opened and closed;
The manual switching means 160,
At one side of the clutch receiving housing 150, a part of the length penetrates into the inside of the clutch receiving housing 150 and is disposed to be perpendicular to the axial direction of the drive shaft 141 and the manual power shaft 1611 and the clutch receiving housing ( 150) is coupled to the manual power shaft 1611 to rotate together with the manual power shaft 1611, and is provided to be spaced a predetermined distance from the drive shaft 141 of the sub-motor 140 Passive power transmission device 161 including (1612);
It is installed on the drive shaft 141 inside the clutch receiving housing 150, rotates together with the drive shaft 141, and is provided to move forward and backward on the drive shaft 141, and the manual A clutch 162 for manual power connection spaced apart from the power rotation gear 1612;
It is rotatably installed on the other side of the clutch receiving housing 150, and when rotated in the first direction, the clutch for manual power connection 162 moves forward so as to mesh with the manual power rotation gear 1612 and rotates in the second direction. A manual switching lever 163 connected to the manual power connection clutch 162 so that the manual power connection clutch 162 is spaced apart from the manual power rotation gear 1612;
A manual switching wire 164 connected to the manual switching lever 163 to rotate the manual switching lever 163 in the first direction;
A return wire (165) connected to the manual shift lever (163) to rotate the manual shift lever (163) in the second direction;
A first sprocket 166 coupled to one side of the manual power shaft 1611 protruding outward of the clutch receiving housing 150;
A second sprocket 167 disposed to be spaced apart from the first sprocket 166 by a predetermined distance and connected to the first sprocket 166 through a chain 20; And
It characterized in that it comprises a handle (168) for rotating the second sprocket (167),
Fold lift-up door drive system with manual switching of the fold lift-up door. delete The method of claim 1,
The manual power connection clutch 162 is characterized in that it is provided in the form of a gear meshing with the manual power rotation gear (1612),
Fold lift-up door drive system with manual switching of the fold lift-up door.

Images