Door operator systems

Abstract

A lift door operator system (1) for opening and closing an opening (2) comprises a door frame (3), the door frame (3) comprising a first frame section (4) at a first side (7) of the opening (2) and a second frame section (6) at a second side (5) of the opening (2). The operator system further comprises a door (8) and a drive unit (10), the door (8) being arranged to move between an open position and a closed position (C), the door (8) being movably connected to the door frame (3), the drive unit (10) being mounted on the door (8), the drive unit (10) comprising at least one motor (11) being arranged to move the door (8) from the closed position (C) to the open position (O). An elongated transmission member (19) extends along the first side (7) of the opening (2) and the first frame section (4). The drive unit (10) further comprises a driven transmission member (18) drivingly connected to the motor (11).

Description

Technical Field

[0001] The present invention relates to a lift door operator system for opening and closing an opening. Background Art

[0002] Door operator systems for overhead doors typically include a door connected to a door frame and a drive unit arranged to move the door along the door frame between an open position and a closed position to open and close the opening. Overhead doors, which can be sectional doors, are commonly used as garage doors or industrial doors. The drive unit may also include a motor or a mechanical unit (such as a spring) to move the door.

[0003] In traditional lift-and-slide sectional doors, an electric motor mounted above the door pulls the door upward using a wire attached to the door. These lift-and-slide sectional doors often implement a counterbalance spring to reduce the force required to open the door. The implementation of a counterbalance spring increases the door's complexity and can be cumbersome to install once the door is in place.

[0004] To achieve a more efficient door operator system that reduces complexity and risks during operation, maintenance, and installation, a door operator system has been developed that features a drive unit mounted to the door. The door is driven by a driven pinion engaging a fixed rack extending along the door's intended trajectory. This door system addresses several shortcomings and disadvantages of traditional door operator systems by introducing drive modularity, allowing for easier and faster installation and reducing complexity. Furthermore, it eliminates the need for a balancing spring.

[0005] However, actuating such doors is associated with numerous challenges. The fixed racks require high-precision manufacturing and proper alignment of the racks when the door is installed. This increases the cost of both the door itself and its installation.

[0006] To address this challenge, a chain drive can be implemented. In such a system, a driven sprocket on the door can engage a chain that runs alongside the door. As known to those skilled in the art, several types of lift door systems are available based on the conditions set by the building in which the door is to be implemented.

[0007] If the wall above the opening is at least as high as the door, a so-called vertical lift door system may be suitable. In this type of lift door system, a chain is fixed to the top of the track, and the door travels up the chain using a sprocket that engages the chain. The chain runs roughly parallel to the track. Thus, the track runs straight from bottom to top, and the door moves vertically upwards.

[0008] In many cases, there is no such large space available for installing a lift door system. In such cases, other types of lift sectional door systems, known as HL (high lift), SL (standard lift), or LL (low lift) lift door systems, may be implemented. Such systems have a track that curves at an angle, which can be horizontal above the opening, allowing installation in applications with limited ceiling height. The difference between HL and SL is that in HL, the track curve starts higher, allowing the bottom panel of the door to remain on the vertical extension of the track even when the door is fully open. This also requires that a wall of considerable height above the door opening be available.

[0009] Sometimes it is desirable to have as little area as possible above the door opening, and in those cases SL or even LL can be used. Here, the track curve is placed so low that the bottom panel already partially travels through the curve when fully opened. HL lift door systems, SL lift door systems and LL lift door systems can be considered as up-and-down lift door systems. In such systems, it is difficult to allow the bottom panel in the door to travel in the track curve of the track system. The object of the present invention is to achieve a lift door system with a drive unit mounted to the door, which solves the problem of the bottom panel traveling through the track curve of the track system. Summary of the Invention

[0010] It is an object of the present disclosure to provide a lift door operator system that seeks to mitigate, alleviate or eliminate one or more of the above-mentioned drawbacks and disadvantages in the art, either singly or in any combination.

[0011] It is an object of the present invention to reduce the complexity of a lift door operator system.

[0012] According to one aspect, a lift door operator system for opening and closing an opening is provided. The lift door operator system includes a door frame comprising a first frame segment at a first side of the opening and a second frame segment at a second side of the opening. Each of the first frame segment and the second frame segment includes a vertically extending portion, a horizontally extending portion, and a curved interconnecting portion. The lift door operator system also includes a door arranged to move between an open position and a closed position, the door being movably connected to the door frame. The door includes a plurality of horizontal, interconnected segments.

[0013] Additionally, the operator system comprises a drive unit mounted on the door, the drive unit comprising at least one motor arranged to move the door from the closed position to the open position and an elongated transmission member extending along the first side of the opening.

[0014] The drive unit further comprises a driven transmission member drivingly connected to the motor, the driven transmission member being movably connected to the elongated transmission member and being arranged to interact with the elongated transmission member to drive the driven transmission member along the elongated transmission member by at least partially wrapping the elongated transmission member around the driven transmission member.

[0015] The lift door operator system further includes a transmission mounting for attaching the elongated transmission member. The transmission mounting includes a fixing point to which the elongated transmission member is mounted. The fixing point is disposed at a distance relative to the vertically extending portion in the direction of the horizontally extending portion, at least when the door is in the open position.

[0016] Embodiments of the invention are defined by the accompanying dependent claims and are further explained in the detailed description and the accompanying drawings.

[0017] It should be emphasized that when used in this specification, the term "comprises / includes" is used to specify the presence of the features, integers, steps or components, but does not exclude the presence or addition of one or more other features, integers, steps, components or groups thereof. Unless otherwise expressly defined herein, all terms used in the claims are to be interpreted according to their ordinary meaning in the technical field. Unless expressly stated otherwise, all references to "a / the [element, device, component, means, step, etc.]" are to be openly interpreted as referring to at least one instance of an element, device, component, means, step, etc. Unless expressly stated otherwise, the steps of any method disclosed herein do not have to be performed in the exact order disclosed.

[0018] Reference in this document to an entity being "designed to" do something is intended to mean the same as an entity being "configured to" or "intended to" do something. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The foregoing will be apparent from the following more particular description of example embodiments, as illustrated in the accompanying drawings, in which like reference numerals refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the example embodiments.

[0020] Figure 1 is a schematic perspective view of a door operator system including a door in a closed position.

[0021] Figure 2a is a schematic perspective view of a drive unit according to an embodiment.

[0022] Figure 2b is a schematic perspective view of a drive unit according to an embodiment.

[0023] Figure 2c is a schematic perspective view of a drive unit according to an embodiment.

[0024] Figure 2d is a schematic perspective view of a drive unit according to an embodiment.

[0025] Figure 2e is a schematic perspective view of a drive unit according to an embodiment.

[0026] Figure 3 is a schematic perspective view of a door operator system including a door in a closed position.

[0027] Figure 4a is a schematic perspective view of a door operator system including a door in a closed position according to an embodiment.

[0028] Figure 4b is a schematic perspective view of a door operator system including a door in a closed position according to an embodiment.

[0029] Figure 5a is a schematic side view of a door operator system including a door in a partially open position according to an embodiment.

[0030] Figure 5b is a schematic side view of a door operator system including a door in an open position according to an embodiment.

[0031] Figure 6a is a schematic side view of a door operator system including a door in a partially open position according to an embodiment.

[0032] Figure 6b is a schematic side view of a door operator system including a door in an open position according to an embodiment.

[0033] Figure 6c is a schematic detail view of a lever arm according to an embodiment when the door is in an open position.

[0034] Figure 6d is a schematic detail view of a lever arm according to an embodiment when the door is in a partially open position.

[0035] Figure 7a is a schematic side view of a door operator system including a door in a partially open position according to an embodiment.

[0036] Figure 7b is a schematic side view of a door operator system including a door in an open position according to an embodiment.

[0037] Figure 7cis a schematic detailed view of a transmission mounting arrangement according to an embodiment when the door is in an open position.

[0038] Figure 7d is a schematic detailed view of a transmission mounting arrangement according to an embodiment when the door is in a partially open position. DETAILED DESCRIPTION

[0039] Embodiments of the present invention will now be described with reference to the accompanying drawings. However, the present invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those skilled in the art. The terminology used in the detailed description of the specific embodiments shown in the accompanying drawings is not intended to limit the invention. In the drawings, like reference numerals represent like elements.

[0040] Figure 1 is a schematic diagram of a door operator system 1 to which the inventive aspects of the present invention may be applied. The door operator system comprises a door frame 3, a drive unit 10 (in Figure 2a 、 Figure 2b and Figure 2c ) and a door 8. A door operator system 1 is arranged to be installed in an opening 2 defined by a wall and a floor. The door 8 is connected to a door frame 3. The door operator system 1 is arranged to open and close the opening 2 by moving the door 8 between an open position O and a closed position C. The open position O can be a horizontal open position O in the form of a flat horizontal position or an inclined horizontal position. The closed position C can be a vertical closed position C.

[0041] A lift door operator system herein refers to a door operator system that is arranged to open and close the opening 2 by lowering and raising the door 8 .

[0042] In this embodiment, door 8 is a sectional door 8 comprising a plurality of horizontal, interconnected sections 9a, 9b, 9c, 9d, and 9e connected to door frame 3. In one embodiment, door 8 is a garage door. In an alternative embodiment, door 8 is an industrial door. Door 8 is arranged to move along door frame 3 between a closed position C and an open position O.

[0043] like Figure 1 As shown, the door operator system 1 may include a first terminal 13 and a second terminal 14. At least one of the terminals 13, 14 is configured to transmit energy to charge an energy storage device (such as a battery) to power the motor of the drive unit. In an alternative embodiment, the motor of the drive unit may be powered by an electrical wire.

[0044] The door operator system is an up and over door operator system. An up and over door operator system is a system in which the door in the closed position C is arranged substantially vertically and the door in the open position O is arranged substantially horizontally and inside the opening.

[0045] In an alternative embodiment, the door operator system can be a door operator system in which the door in the closed position C is arranged substantially vertically, and the door in the open position O is arranged in an inclined position that is disposed between the substantially vertical position and the substantially horizontal position. For example, the door can be disposed at a 45° angle relative to the horizontal position in the open position O, however, as will be appreciated by those skilled in the art, the door can be disposed at any angle disposed between the horizontal and vertical orientations of the door in the open position O.

[0046] The door frame 3 includes a first frame section 4 at a first side 7 of the opening 2 and a second frame section 6 at a second side 5 of the opening 2. The door frame 3 is connected to a wall 50 and a floor 23 (i.e., the floor of the opening 2). In one embodiment, the first frame section 4 includes a substantially vertically extending portion 4a and a substantially horizontally extending portion 4b. The second frame section 6 includes a substantially vertically extending portion 6a and a substantially horizontally extending portion 6b. The vertically extending portions 4a, 6a and the horizontally extending portions 4b, 6b are connected to form a path for the door 8 to slide on and a track for the drive unit 10 to interact with.

[0047] Thus, each of the first and second frame sections 4, 6 includes a vertically extending portion 4a, 6a, a horizontally extending portion 4b, 6b, and a curved interconnecting portion 4c, 6c. In other words, the first frame section 4 includes a vertically extending portion 4a, a horizontally extending portion 4b, and a curved interconnecting portion 4c. Thus, the curved interconnecting portion 4c connects the vertically extending portion 4a and the horizontally extending portion 4b. Similarly, the second frame section 6 includes a vertically extending portion 6a, a horizontally extending portion 6b, and a curved interconnecting portion 6c. Thus, the curved interconnecting portion 6c connects the vertically extending portion 6a and the horizontally extending portion 6b.

[0048] The vertically extending portions 4a, 6a may be vertical portions 4a, 6a or inclined vertical portions 4a, 6a. Similarly, the horizontally extending portions 4b, 6b may be horizontal portions 4b, 6b or inclined horizontal portions 4b, 6b.

[0049] refer to Figure 1, the door 8 is directly or indirectly connected to the door frame 3. The door 8 is movably connected to the first frame section 4 at a first side and movably connected to the second frame section 6 at a second side. In one embodiment, one or more of the plurality of sections 9a, 9b, 9c, 9d, and 9e are connected to the first frame section 4 at the first side 7 and to the second frame section 6 at the second side 5.

[0050] refer to Figures 2a to 2e , a drive unit 10 is mounted on the door 8. The drive unit 10 comprises at least one motor 11. The at least one motor 11 is arranged to move the door 8 from the closed position C to the open position O.

[0051] To allow for driving the door 8, the lift door operator system 1 further comprises an elongated transmission member 19 extending along the first side 7 of the opening 2. The elongated transmission member 19 may further extend along the first frame section 4. The drive unit 10 further comprises a driven transmission member 18 drivingly connected to the motor 11. The driven transmission member 18 is movably connected to the elongated transmission member 19 and is arranged to interact with the elongated transmission member 19 to drive the driven transmission member 18 along the elongated transmission member 19 by at least partially surrounding the driven transmission member 18. Thus, the elongated transmission member 19 is arranged to at least partially surround the driven transmission member 18.

[0052] Compared to a fixed rack, the elongated transmission member offers a more cost-effective solution in terms of manufacture and installation. Furthermore, the elongated transmission member allows for relative movement between the door 8 and the door frame, and does not require the same high precision and proper alignment as a fixed rack solution. Thus, the elongated transmission member can be arranged to allow a degree of movement in a direction orthogonal to the first frame section 4.

[0053] Furthermore, the elongated transmission member provides a safer door operator system because, even if the door is pushed off the guide rail, the elongated transmission member will at least partially follow and maintain engagement with the driven transmission member. Furthermore, compared to a fixed rack, the elongated transmission member is quieter and wear-resistant, and is less likely to fail due to being pressed by foreign objects.

[0054] The elongated transmission member 19 can be in the form of a bendable transmission member. The elongated transmission member 19 can also be in the form of a suspended transmission member. It should be noted that, in this context, bendable does not necessarily mean that the transmission member is necessarily flexible, but only that it is capable of wrapping around the driven transmission member. Thus, the transmission member 19 can be considered to be arranged to engage with the driven transmission member 18 and provide for relative movement between the driven transmission member 18 and the direction of movement of the door 8 defined by the door frame 3. In other words, the transmission member can be considered to be a non-fixed transmission member or a suspended transmission member. Thus, the elongated transmission member can be arranged to engage the driven transmission member independently of the door frame.

[0055] The drive unit 10 is movably connected to an elongated transmission member 19. Thus, the drive unit 10 is connected to the elongated transmission member 19 so as to allow relative movement between the door and the door frame, whereby the drive unit is fixed to the door. The drive unit 10 comprises at least one motor 11. The drive unit 10 is arranged to move the door 8 from a closed position to an open position. To power the motor 11, the at least one motor 11 may be connected to at least one energy storage device (such as a battery) that is arranged to power the at least one motor 11. The drive unit 10 is arranged to move the door 8 from a closed position C to an open position O.

[0056] In one embodiment, the drive unit 10 is arranged to move the door from the open position O to the closed position C. In one embodiment, the door 8 is arranged to move from the open position O to the closed position C by means of the weight of the door 8. In one embodiment, the drive unit 10 is arranged to brake the door 8 when moving from the open position O to the closed position C.

[0057] In one embodiment, the elongate transmission member may be suspended only by the top and bottom ends.

[0058] The elongated transmission member 19 may be biased. Biasing of the elongated transmission member 19 enables the tension of the resilient elongated transmission member 19 to be maintained at a suitable level and further compensates for wear and potential tolerance issues.

[0059] In one embodiment, the elongated transmission member 19 can be biased by means of a spring arrangement. The top end of the elongated transmission member 19 can be fixedly mounted, and the bottom end of the elongated transmission member 19 can be spring-loaded. This allows for easier access for operators performing maintenance work involving the spring. In one embodiment, the top and bottom ends of the elongated transmission member 19 are mounted to the door frame (e.g., the first frame section 4).

[0060] In one embodiment, the lift door operator system further comprises at least one guide member 92. The at least one guide member 92 is mounted to the door 8. The guide member 92 can be arranged to interact with the elongated transmission member 19 to guide the door 8 along the elongated transmission member 19 by the elongated transmission member 19 at least partially surrounding the at least one guide member 92. Thus, the guide member 92 moves the elongated transmission member 19 and guides the driven transmission member 18 relative to the elongated transmission member 19 so that they are correctly aligned. Thus, a more reliable door operator system can be achieved. The guide member 92 can preferably be a rotatable guide member, which can be mounted to the door 8 by a journal connection. Thus, the elongated transmission member 19 is arranged to at least partially surround the guide member 92.

[0061] refer to Figures 2a to 2e , the elongated transmission member 19 can be arranged to surround and interact with a portion of the driven transmission member 18 and a portion of the guide member 92. The portion of the driven transmission member 18 that interacts with the elongated transmission member 19 is opposite the portion of the guide member 92 that interacts with the elongated transmission member 19. This allows for a larger interface between the driven transmission member, the guide member, and the elongated transmission member, thereby allowing for a more stable lift door operator system that requires less torque to operate.

[0062] like Figures 2a to 2e As shown, the elongate transmission member 19 is preferably suspended along a first side of the opening.

[0063] The elongated transmission member 19 may be any conventional elongated transmission member 19 that provides the slack required to compensate for horizontal or diagonal movement of the drive unit and / or door. The elongated transmission member may be a belt or a chain.

[0064] In one embodiment, the elongated transmission member 19 may be a belt. Thus, the guide member 92 and the driven transmission member 18 may be pulley elements arranged to engage the belt. In one embodiment, the belt may be a toothed belt or a multi-V belt, whereby the guide member 92 and the driven transmission member 18 may be toothed wheels that engage the ribs of the toothed belt or the multi-V belt.

[0065] The elongated transmission member 19 may also be a chain. Figures 2a to 2c. The chain may be provided with slots for receiving cogs. Thus, the driven transmission member 18 may be a gear arranged to interact with the chain (e.g. the slots of the chain). The driven transmission member 18 may be a sprocket. Furthermore, the guide member 92 may be a gear arranged to interact with the chain (e.g. the slots of the chain). The guide member 92 may be a sprocket. In one embodiment, the guide member 92 may be a ribbed wheel for interacting with the chain. In one embodiment, the chain is an endless chain surrounding the guide member(s) and the driven transmission member(s). In one embodiment, the chain is a non-annular chain, such as a single chain that only partially surrounds the guide member(s) and the driven transmission member(s).

[0066] In one embodiment, the lift door operator system further includes a first set of guide rollers 17 and a second set of guide rollers 17. The first set of guide rollers and the second set of guide rollers are mounted to the door 8. The first set of guide rollers 17 are arranged to interact with the first frame section 4, and the second set of guide rollers 17 are arranged to interact with the second frame section 6. Thus, the guide rollers move with the door 8 in a guided manner along a track formed by the frame (e.g., the first frame section 4 and the second frame section 6).

[0067] In one embodiment, the door 8 is a sectional door. Thus, the door comprises a plurality of horizontal and interconnected sections 9a, 9b, 9c, 9d, 9e (e.g. Figure 1 shown).

[0068] Reference again Figures 2a to 2c , the drive unit 10 is mounted on section 9e of door 8. To ensure smoother movement of the section, the section on which the drive unit 10 is mounted is provided with two pairs of guide rollers. Thus, a first upper guide roller and a second upper guide roller extend from section 9e toward the first and second frame sections 4, 6, respectively. Similarly, a first lower guide roller and a second lower guide roller extend from section 9e toward the first and second frame sections 6, respectively.

[0069] In one embodiment, the drive unit 10 is mounted to the bottommost section 9e of the door 8. According to such an embodiment, the first lower guide roller and the second lower guide roller can be disposed adjacent to the bottom horizontal end of the bottommost section 9e. The upper guide roller can correspondingly be disposed adjacent to the top horizontal end of the bottommost section 9e.

[0070] In one embodiment, upper and lower guide rollers may be mounted to each segment 9a to 9e. Preferably, the upper guide rollers are positioned adjacent the upper horizontal end of each segment, and the lower guide rollers are positioned adjacent the bottom horizontal end of each segment.

[0071] like Figure 2dAs most clearly depicted in FIG, at least one guide member 92 can be arranged coaxially with one of the guide rollers 17. Since the door frame and guide rollers take up some of the load during movement of the door, the coaxial arrangement reduces the forces on the guide member. Thus, the resultant forces on the door sections and the bearings of the drive unit and / or guide member are reduced. In addition, the coaxial arrangement allows the elongated transmission member to be arranged more behind the guide roller, which reduces the exposure of the elongated transmission member. The guide roller 17 is mounted to the door 8 by means of a shaft 88. Both the guide roller 17 and the guide member 92 are mounted to the shaft. The guide member 92 can be fixedly attached to the shaft 88. Advantageously, the guide roller 17 and the guide member 92 can be arranged adjacent to the bottom horizontal edge of the door 8. In one embodiment, the guide member is integrated into the guide roller.

[0072] As described Figures 2a to 2d As seen in , coaxial in this context means that the guide roller and the guide member are arranged parallel to each other along an extending horizontal axis. The horizontal axis extends between the first frame section and the second frame section.

[0073] In one embodiment, the guide member is coaxial with a guide roller positioned adjacent to the bottom horizontal end of the door's bottom-most section 9e. This is particularly advantageous because it provides a superior pivoting location for the door. Thus, when the lift door operator system is a flip-up door operator system, the guide roller and guide member create a common, low pivot point for the door as it approaches its open position. This significantly reduces the space required above the door opening compared to, for example, doors having a driven portion utilizing, for example, a fixed rack.

[0074] In one embodiment, the first upper guide member 92 is arranged coaxially with the first upper guide roller 17. Correspondingly, the first lower guide member 92 is arranged coaxially with the first lower guide roller 17. Thus, the driven section 9e can be guided along both the elongated transmission member 17 and the door frame on the same axis. This further increases stability and reduces the load on the section to which the drive unit 10 is mounted. Preferably, this section is the bottom-most section, and the lower guide member and lower guide wheel are arranged adjacent to the bottom section of the bottom-most section. Thus, one of the guide rollers 17 and one of the guide members 92 can be arranged coaxially with each other near the bottom horizontal edge of the door 8. This can also be the case with single-section doors.

[0075] In one embodiment, the lift door operator system includes a pair of elongated transmission members to allow for a more stable movement pattern of the door 8. A first elongated transmission member 19 extends along a first side 7 of the opening 2. The first elongated transmission member 19 can further extend along the first frame section 4. A second elongated transmission member 19 extends along a second side 5 of the opening 2. The second elongated transmission member 19 can further extend along the second frame section 6. The guide and drive arrangements discussed with reference to the first side of the door can be mirrored accordingly to the second side of the door.

[0076] Therefore, the lift door operator system may further comprise first and second driven transmission members 18 arranged to interact with first and second elongated members 19 by at least partially surrounding the first and second elongated transmission members, respectively.

[0077] The first and second driven transmission members 18 may be driven by a single or multiple motors 11. In one embodiment, a single motor 11 is drivingly connected to the first and second transmission members 18. The single motor 11 may be connected to the first and second driven transmission members 18 by means of first and second shafts extending from the motor 11. Figure 3 As further described, the drive unit 10 may include a first motor and a second motor, each of which is drivingly connected to the first driven transmission member 18 and the second driven transmission member 18, respectively.

[0078] Similar to the first vertical side of the door, the second side of the door can have one or more guide members mounted thereon. In one embodiment, the lift door operator system further comprises at least one guide member 92 mounted to the door 8, the guide member being arranged to interact with the second elongated transmission member for guiding the door 8 along the second elongated transmission member 17 by at least partially surrounding the second elongated transmission member. In other words, the door operator system comprises at least one first guide member 92 mounted on the door 8, the at least one first guide member 92 being arranged to interact with the first elongated transmission member 19, and at least one second guide member 92 being arranged to interact with the second elongated transmission member 19 by at least partially surrounding the first and second elongated transmission members, respectively.

[0079] Both elongated transmission members 19 can be biased by spring means. The top end of the elongated transmission member 19 can be fixedly mounted, and the bottom end of the elongated transmission member 19 can be spring-loaded. This allows for easier access for operators performing maintenance work involving the springs. In one embodiment, the top and bottom ends of the elongated transmission member 19 are mounted to the door frame, for example, connected to the first and second frame sections, respectively.

[0080] exist Figure 2bIn one embodiment illustrated in FIG, the first driven transmission member 18 can be arranged between the first upper guide member and the first lower guide member 92. The first and lower guide members 92 are arranged to interact with the first elongated transmission member 19 by at least partially enveloping the first and lower guide members. Similarly, the second driven transmission member 18 can be arranged between the second upper and second lower guide members 92. The second upper and second lower guide members 92 are arranged to interact with the second elongated transmission member by at least partially enveloping the second elongated transmission member. This enables additional guidance of the elongated transmission member both before and after the driven transmission member in the driving direction without requiring redundant components. Consequently, a less complex operator assembly can be achieved. Furthermore, this allows for a larger interface between the elongated transmission member and the guide member outside of the driven transmission member, resulting in a more stable door operator system that requires less torque to operate.

[0081] Thus, the first driven transmission member 18 and the second driven transmission member 18 can be arranged to extend from the door 8 in opposite directions toward the first elongated transmission member 19 and the second elongated transmission member 19, respectively. The first driven transmission member 18 can be arranged proximate to a first vertical section of the door, which is adjacent to the first elongated transmission member when the door is in the closed position. Similarly, the second driven transmission member 18 can be arranged proximate to a second vertical section of the door, which is adjacent to the second elongated transmission member when the door is in the closed position.

[0082] The elongated transmission member 19 can be arranged to surround and interact with a portion of the driven transmission member 18 and a portion of the upper and lower guide members 92, 92. The portion of the driven transmission member 18 that interacts with the elongated transmission member 19 is opposite the portions of the upper and lower guide members 92 that interact with the elongated transmission member 19. This allows for a larger interface between the driven transmission member, the guide members, and the elongated transmission member, thereby allowing for a more stable lift door operator system that requires less torque to operate.

[0083] In an embodiment, wherein only the first elongated transmission member is drivingly connected to the transmission member, the door operator system may comprise only the first upper guide member and the first lower guide member according to the above.

[0084] In one embodiment where the drive unit 10 is mounted to the section 9e of the door 8, a first upper guide member 92 arranged to interact with the first elongated transmission member 19 can be arranged adjacent to a top section of the section 9e. A first lower guide member 92 arranged to interact with the first elongated transmission member 19 can be arranged adjacent to a bottom section of the section 9e. A second upper guide member 92 arranged to interact with the second elongated transmission member 19 can be arranged adjacent to a top section of the section 9e. A second lower guide member 92 arranged to interact with the second elongated transmission member 19 can be arranged adjacent to a bottom section of the section 9e.

[0085] In one embodiment, the first upper guide member 92 can be coaxially arranged with the first upper guide roller 17 for interacting with the first elongated transmission member 19 by at least partially surrounding the first upper guide member and the first lower guide member. The first lower guide member 92 can be coaxially arranged with the first lower guide roller 17 for interacting with the first elongated transmission member 19. The second upper guide member 92 can be coaxially arranged with the second upper guide roller 17 for interacting with the second elongated transmission member 19 by at least partially surrounding the second upper guide member and the second lower guide member. The second lower guide member 92 can be coaxially arranged with the second lower guide roller 17 for interacting with the second elongated transmission member 19.

[0086] like Figures 2a to 2e As shown, the drive unit 10 may include a reduction gear arrangement 76 to provide additional torque between the motor and the driven transmission member 18. The reduction gear arrangement 76 connects the driven transmission member 18 and the motor 11. The reduction gear arrangement may be in the form of a gearbox 76. The gearbox 76 enables selective torque control between a high-speed mode and a high-torque mode of, for example, a door operator system.

[0087] In one embodiment where the drive unit 10 comprises a single motor, the motor is connected to a reduction gear arrangement 76 which may be in the form of a gearbox whereby the output shaft of the gearbox is connected to the first and second driven transmission members 18 so as to transmit torque thereto, or in the case of an operator system having only one elongated transmission member, the output shaft of the gearbox is connected to a single driven transmission member.

[0088] In one embodiment, the drive unit 10 includes a first motor and a second motor. The first motor can be connected to a first reduction gear device (e.g., a gearbox), which is in turn connected to a first driven transmission member. The second motor can be connected to a second reduction gear device (e.g., a gearbox), which is in turn connected to a second driven transmission member.

[0089] The lift gate operator system may further include at least one transmission member protector 61. Transmission member protector 61 is arranged to at least partially surround driven transmission member 18 and a portion of elongated transmission member 19 that interacts with the driven transmission member 18. Transmission member protector 61 serves to prevent elongated transmission member 19 from disengaging from driven transmission member 18. Thus, a safer lift gate operator system can be achieved. Transmission member protector 61 also serves as a means of preventing human contact with elongated transmission member 19.

[0090] The transmission member protector 61 may be arranged to extend outwardly from the door 8 (ie horizontally) across the elongate transmission member 19 to cover the elongate transmission member 19. The transmission member protector 61 may be attached to the door 8 or the drive unit 10.

[0091] In one embodiment utilizing multiple driven transmission members 18, the lift gate operator system can include multiple transmission member protectors 61. Each transmission member protector 61 can be arranged to at least partially surround a corresponding driven transmission member 18 and a portion of the elongated transmission member 19 that interacts with the driven transmission member 18.

[0092] In one embodiment, the lift door operator system may further include a transmission member tensioner for spring-loading the elongated transmission member 19, wherein the top and bottom ends of the elongated transmission member 19 are fixedly mounted and the transmission member tensioner is attached to the door 8. The transmission member tensioner may include a roller element arranged to interact with the elongated transmission member 19.

[0093] like Figure 2c As shown, the lift door operator system may include a spring arrangement 74. The bottom end 68 of the elongated transmission member 19 may be attached to a fixed point by means of the spring arrangement 74. The fixed point may be a point on the door frame or the floor. Figure 3 c, the spring device 74 can be connected to the door frame 3 (e.g., the first frame section 4) and the bottom end 68 of the elongated transmission member 19. The elongated transmission member 19 can be arranged downwardly around the control element 79 located adjacent the floor of the opening and upwardly toward the spring device 74.

[0094] like Figure 2d and Figure 2eAs shown, the lift door operator system may further include a resilient panel 91. Resilient panel 91 is attached to door 8. Resilient panel 91 extends from the bottom horizontal edge 8 of the door and is arranged to contact the floor of opening 2 when the door is in the closed position C. Resilient panel 91 deforms when it contacts the floor when door 8 is closed, thereby protecting door 8 from impact and wear caused by direct contact with the floor. Furthermore, when the door is in the closed position, resilient panel 91 can provide a sealing effect between the floor and the door. In one embodiment, resilient panel 91 may be made of a rubber material.

[0095] Go to Figure 3 , which depicts a lift door operator system in more detail, wherein the drive unit includes two motors 11a, 11b. The first motor 11a and the second motor 11b can be arranged on the same horizontal section 9e of the door 8. The first motor 11a and the second motor 11b can be arranged on the bottommost horizontal section 9e of the door 8. The first motor 11a and the second motor 11b can be mounted on different vertical sides of the door 8. For example, the first motor 11a can be arranged on the vertical side of the door 8 near the first side 7 of the opening, and the second motor 11b can be arranged on the vertical side of the door 8 near the second side 5 of the opening.

[0096] In one embodiment, the drive unit 10 includes at least a first motor 11a and a second motor 11b, which may be mounted on the same vertical side of the door 8. The first motor and the second motor may be arranged on the same horizontal portion of the door 8. The first motor and the second motor may be arranged on the bottommost horizontal section 9e of the door 8.

[0097] In one embodiment, the first motor 11a is movably connected to the first elongated transmission member 19 by means of a first driven transmission member 18 , and the second motor 11b is movably connected to the second elongated transmission member 19 by means of a second driven transmission member 18 .

[0098] The motor 11 and the drive unit 10 are preferably arranged on the same main section of the door 8, for example the outer section or the inner section of the door 8. To protect the motor 11 and the drive unit 10, they are arranged on the inner section of the door in the form of a door section facing the inside of the door 8.

[0099] In one embodiment, the motor(s) 11 of the drive unit 10 are direct current (DC) motors 11. In a preferred embodiment, the motor(s) 11 are brushless direct current (BLDC) motor(s).

[0100] The control unit may be in operable communication with the drive unit 10. The control unit may be in wired or wireless communication with the two motors 11a, 11b.

[0101] The control unit is configured to control the movement of the drive unit 10, i.e., when and how the drive unit 10 and its associated motors 11a, 11b should move the door 8. The control unit is arranged to receive input as to whether the door 8 should be opened or closed. In one embodiment, the control unit is arranged to receive input from one or more of a user interface, a mechanical button, or a remote control. In one embodiment, the control unit is arranged to receive input from a sensor for automatic operation of the door.

[0102] The drive unit may also comprise an additional motor which will now be described further.

[0103] exist Figure 4a In one embodiment schematically illustrated in FIG, the drive unit 10 includes a third motor 11c and a fourth motor 11d mounted on the second of the horizontal sections 9 and arranged to assist the first motor 11a and the second motor 11b in moving the sectional door 8 from the closed position C to the open position O. The third and fourth motors 11 are connected to a control unit 20 and are arranged to be controlled by the control unit in the same manner as described above with respect to the first and second motors 11. In one embodiment, the system 1 includes four motors 11a, 11b, 11c, and 11d and a control unit 20. The first and second motors 11a and 11b are arranged on one section 9e, and the third and fourth motors 11c and 11d are arranged on another section 9c. Accordingly, the drive unit 10 may include a third driven transmission member 18 mounted to the door 8. The third driven transmission member 18 is movably connected to a first elongated transmission member 19 for driving the third driven transmission member 19 along the first elongated transmission member 19. Furthermore, the drive unit may include a fourth driven transmission member 18 mounted to the door 8. The fourth driven transmission member 18 is movably connected to the second elongated transmission member 19 for driving the fourth driven transmission member 19 along the second elongated transmission member 19. The drive unit may further comprise a Figures 2a to 2c Guide wheels and guide rollers associated with the third and fourth driven transmission members are described.

[0104] In one embodiment, the first motor 11a and the second motor 11b are arranged on the section 9e, which is located on the section 9 of the door closest to the floor in the closed position C. However, it should be noted that the section 9e may also be the section 9d, which is the section arranged next to the section closest to the floor in the closed position C, for example.

[0105] exist Figure 4bIn one embodiment schematically illustrated in FIG, the drive unit 10 includes a fifth motor 11e and a sixth motor 11f, which are mounted on a third of the horizontal sections 9 and are arranged to assist the other motors 11 in moving the sectional door 8 from the closed position C to the open position O. The fifth and sixth motors 11e and 11f are connected to a control unit 20 and are arranged to be controlled by the control unit in the same manner as described above with respect to the first and second motors 11a and 11b. In one embodiment, the system 1 includes six motors 11a, 11b, 11c, 11d, 11e, and 11f, and a control unit. The first and second motors 11a and 11b are arranged on one section 9e, the third and fourth motors 11c and 11d are arranged on another section 9c, and the fifth and sixth motors 11e and 11f are arranged on another section 9d. Thus, the drive unit 10 may include a fifth driven transmission member 18 mounted to the door 8. The fifth driven transmission member 18 is movably connected to the first elongated transmission member 19 for driving the fifth driven transmission member 19 along the first elongated transmission member 19. In addition, the drive unit may include a sixth driven transmission member 18 mounted to the door 8. The sixth driven transmission member 18 is movably connected to the second elongated transmission member 19 for driving the sixth driven transmission member 19 along the second elongated transmission member 19. The drive unit may also include a Figures 2a to 2c The guide wheels and rollers associated with the fifth and sixth driven transmission members are described.

[0106] In embodiments where the additional segments 9a, 9b, 9c, 9d, 9e are arranged with motors, these motors may be arranged at every other segment, at each segment or at a segment above segment 9e.

[0107] In one embodiment, the first motor, the second motor, the third motor or the first motor, the second motor, the third motor and the fourth motor may be arranged on section 9. Preferably, these motors may be arranged on the bottommost section 9e.

[0108] In one embodiment, the at least one motor 11 of the drive unit 10 is configured to brake the movement of the door 8 when the door 8 moves from the open position O to the closed position C. In one embodiment of the operator system having two motors, both the first motor 11 a and the second motor 11 b are configured to brake the movement of the door 8 when the door 8 moves from the open position O to the closed position C.

[0109] In one embodiment, the at least one motor 11 of the drive unit 10 is configured to function as a generator and charge the at least one energy storage device when the door 8 moves from the open position O to the closed position C. In one embodiment, the first motor 11 a and the second motor 11 b of the drive unit 10 are both configured to function as generators and charge the at least one energy storage device when the door 8 moves from the open position O to the closed position C. As the weight of the door 8 forces the door toward the closed position, the at least one motor of the drive unit is caused to rotate, whereby the motor can generate electricity for charging the energy storage device.

[0110] At least one motor 11 of the drive unit 10 may also include a brake. In one embodiment, both the first motor 11a and the second motor 11b include a brake. In one embodiment, the brake is an electromagnetic brake. The brake is arranged to control / reduce the speed of the door 8 as it moves from the open position O to the closed position C. In one embodiment, the brake is arranged to prevent the door from moving at any position along its trajectory between the closed and open positions.

[0111] In one embodiment, drive unit 10 is mounted to section 9e of door 8, one of the plurality of horizontal, interconnected sections. A first motor 11a and a second motor 11b are disposed on the same section 9e. Preferably, first motor 11a and second motor 11b are disposed on different vertical sides of section 9e. Thus, each motor 11a, 11b is disposed in conjunction with first frame section 4 and second frame section 6, respectively.

[0112] In one embodiment, the door 8 can be horizontal, or at least angled, for the closed position C, and positioned inside and above the opening 2. When moving from the closed position C to the open position O, the interconnected sections 9 of the door will push each other so that the entire door 8 will move upward. When moving from a vertical position to a horizontal position, the sections 9 will rotate and move relative to each other.

[0113] In one embodiment, when moving door 8 from open position O to closed position C, at least one of first motor 11 and second motor 11 operates as a generator 11. When sprocket 18 rotates, generator 11 rotates. Generator 11 reduces the speed of door 8. Generator 11, connected to an energy storage device, charges the energy storage device during movement. The energy storage device is charged using the kinetic energy of moving door 8.

[0114] 5-7 , the lift gate operator system includes a transmission mounting arrangement 100 , 200 , 300 . The transmission mounting arrangement 100 , 200 , 300 is used to attach an elongated transmission member 19 .

[0115] The transmission mounting arrangement 100, 200, 300 includes a fixing point 101, 201, 301. The elongated transmission member 19 is mounted to the fixing point 101, 201, 301. At least when the door is in the open position O, the fixing point 101, 201, 301 is positioned at a horizontal distance d relative to the vertically extending portion 4b, 6b in the direction of the horizontally extending portion 4b, 6b. The fixing point 101, 201, 301 may be in the form of a clamping connection or fastening device. In one embodiment, the fixing point 101, 201, 301 may be in the form of a plate. The plate may be capable of supporting the entire weight of the door 8. The plate may be attached to a wall surrounding the opening 2 and / or the door frame 3. The plate may be made of steel.

[0116] In one embodiment, the transmission mounting device 100, 200, 300 is arranged close to the upper edge of the opening 2. The transmission mounting device 100, 200, 300 (i.e., the fixing point 101, 201, 301 of the transmission mounting device 100, 200, 300) can be arranged at a position higher than the door 8 when the door 8 is in the open position.

[0117] As previously referenced Figures 2a to 2e As described, the lift door system may include a first elongated transmission member extending along the first side 7 of the opening 2 and a second elongated transmission member 19 extending along the second side 5 of the opening 2. The lift door operator system 1 may also include first and second driven transmission members 18, which are arranged to interact with the first and second elongated transmission members 19 by at least partially surrounding the first and second elongated transmission members 18, respectively.

[0118] Thus, the transmission mounting arrangement may comprise a first fixing point 101, 201, 301 and a second fixing point 101, 201, 301. The first elongated transmission member 19 is mounted to the first fixing point. The second elongated transmission member 19 is mounted to the second fixing point. At least when the door is in the open position O, the first fixing point and the second fixing point are each arranged at a horizontal distance d relative to the vertically extending portion 4a, 6a, respectively, in the direction of the horizontally extending portion 4b, 6b.

[0119] Thus, at least when the door is in the open position O, the first fixing point is arranged at a horizontal distance d relative to the vertical extension 4a of the first frame section 4 in the direction of the horizontal extension 4b of the first frame section 4 .

[0120] Accordingly, at least when the door is in the open position O, the second fixing point is arranged at a horizontal distance d relative to the vertical extension 6a of said section frame section 6 in the direction of the horizontal extension 6b of the second frame section 6 .

[0121] In one embodiment, the bottom end 68 of the elongated transmission member 19 is attached to a fixed point by means of a spring arrangement 74. This allows for tensioning of the elongated transmission member 19, which is particularly advantageous in combination with the transmission mounting arrangement 100, 200, 300. The combination of the tensioned elongated transmission member and the transmission mounting arrangement together reduces wear on the components of the lift gate operator system.

[0122] In one embodiment, a second end opposite the first end is attached to a fixing point 101, 201, 301. In one embodiment, the elongated transmission member 19 may extend over the transmission mounting arrangement 100, 200, 300, whereby a portion of the elongated transmission member 19 may be attached to a fixing point 101, 201, 301 of the transmission mounting arrangement 100, 200, 300.

[0123] To save space, the fixing point can be arranged below the horizontal extension 4 b , 6 b of the frame sections 4 , 6 , at least when the door 8 is in the open position.

[0124] refer to Figure 5a and Figure 5b The transmission device 100 includes a fixed support 102. The fixed support 102 includes a fixed point 101. Therefore, the fixed point 101 is stationary. Therefore, the horizontal distance d is fixed. In one embodiment, the horizontal distance d can be between 0.05 meters and 1 meter.

[0125] like Figure 5a and Figure 5b As shown, the fixing bracket 102 can be arranged below the horizontal extensions 4b, 6b of the frame sections 4, 6. In other words, the fixing point 101 can be arranged below the horizontal extensions 4b, 6b of the frame sections 4, 6. Thus, the fixing bracket 102 and / or the fixing point 101 can be arranged at a lower height relative to the floor of the opening than the horizontal extensions 4b, 6b of the frame sections 4, 6. This allows the lift door operator system to be installed even when space above the opening is limited, while preventing wear on the lift door operator components.

[0126] The offset distance between the vertically extending portion and the fixing point in both vertical and horizontal directions increases support for the elongated transmission member as the door travels through the curved interconnection of the frame sections. Compared to conventional systems where the fixing point is aligned with the vertically extending portion of the frame sections, this offset positions the elongated transmission member to support movement of the door through the curved interconnection of the frame sections. This reduces strain and wear on the components of the lift door system (i.e., the driven transmission member, the elongated transmission member, and the guide member), which increases the service life of the lift door operator system.

[0127] This arrangement allows for reduced wear without introducing additional moving parts and complexity into the lift gate operator system. This makes it particularly suitable where there is some space available for mounting the transmission mounting arrangement 100 (i.e., the HL lift gate operator system and the SL lift gate operator system).

[0128] like Figure 5a and Figure 5b As shown, the drive unit can be mounted to the bottom-most section of the door 8. This is particularly advantageous because it allows the bottom-most section to push the remaining sections of the door 8, which reduces wear on the components of the lift door operator system and the torque required to move the door to the open position O.

[0129] Figure 5a The door is shown in a partially open position (i.e., a partially open vertical position). Therefore, the section of the door 8 provided with the drive unit has not reached the curved interconnecting portions 4c, 6c of the frame sections 4, 6. Therefore, the section of the door 8 provided with the drive unit is essentially vertical.

[0130] Figure 5b The door 8 is shown in an open position. The section of the door 8 where the drive unit is located has therefore advanced to the curved interconnecting portion 4c. Consequently, the section of the door 8 where the drive unit is located has an inclined orientation that follows the shape of the curved interconnecting portion 4c. Compared to conventional arrangements where the fixing point is aligned with the vertically extending portions 4a, 6a of the frame sections 4, 6, the horizontal distance d and the resulting offset between the vertically extending portions 4a, 6a of the frame sections 4, 6 allow the portion of the elongated transmission member 19 extending between the fixing point 101 and the section where the drive unit is located to have a more vertical orientation. This allows for additional support to be provided for the section where the drive unit is located.

[0131] Figures 6 and 7 disclose an embodiment with a movable fixing point 201, 301. Thus, the fixing point 201, 301 is movable and attached to the elongated transmission member 19 to move in response to movement of the door 8. The fixing point 201, 301 is arranged to be located at a horizontal distance d in the direction of the horizontal extension 4b, 6b relative to the vertical extension 4a, 6a when the door (8) is in the open position (O).

[0132] Since the movement is transferred to the fixed point by means of the elongated transmission member 19, the movement of the driven section (ie the section provided with the drive unit) will cause a movement of the fixed point.

[0133] Thus, the fixing points 201, 301 are provided on the movable members 202, 303. The movable members are arranged to move between a first position when the door 8 is in the open position and a second position when the door 8 is in the closed position. The fixing points 201, 301 are provided at a horizontal distance d relative to the vertical extension 4a, 6a in the direction of the horizontal extension 4b, 6b. The movable members 202, 303 may be as follows: Figures 6a to 6d The lever arm 202 shown or Figures 7a to 7d In the form of a movable fixing member 303.

[0134] The removable fixing point allows the lift to be supported without requiring too much space above the door. Instead, the transmission mounting can be positioned at a height that is substantially aligned with the horizontal extension of the track. This results in a more space-efficient lift door operator system that is less susceptible to wear. This makes it particularly advantageous in SL or LL lift door operator systems.

[0135] Go to Figure 6a and Figure 6b The transmission mounting arrangement 200 may include a lever arm 202. A fixing point is provided at a first end of the lever arm 202, to which the elongated transmission member 19 is thus attached. A second end of the lever arm 202 is pivotally mounted to a fixed lever bracket 203 of the transmission mounting arrangement 200, such that the lever arm 202 is in a first position when the door 8 is in the open position O, and in a second position when the door 8 is in the closed position. When the lever arm 202 is in the first position, the fixing point 201 is disposed at a horizontal distance d relative to the vertically extending portions 4a, 6a in the direction of the horizontally extending portions 4b, 6b.

[0136] This lever arm arrangement is particularly advantageous when only a small area is available above the door opening, as in SL or LL lift door operator systems. In such systems, the bend (i.e., the curved interconnection) is positioned so low that the bottom panel of the door already partially or even completely passes through the bend when fully opened. Thus, the lever arm effectively helps to drag the door section through the curved interconnection, which reduces wear on the driven transmission member and the elongated transmission member.

[0137] In one embodiment, the elongated transmission element 19 may have a substantially vertical orientation when the lever arm 202 is in the second position. In one embodiment, the elongated transmission member 19 may be parallel to the vertically extending portions 4a, 6a when the lever arm 202 is in the second position.

[0138] In one embodiment, the transmission mounting arrangement 200 further comprises a damping element arranged to bias the movement of the lever arm 202. In one embodiment, the damping element may be a torsion spring arranged to bias the lever arm 202 relative to the fixed lever bracket 203. The damping element may smooth the travel and avoid rapid changes in tension in the elongated transmission member due to changes in the length of the elongated transmission member caused by movement of the lever, particularly when the elongated transmission member is biased.

[0139] like Figures 6a to 6b As shown, fixed lever bracket 203 can be positioned below horizontal extensions 4b, 6b of frame sections 4, 6. In other words, the second end of lever arm 202, i.e., the end of lever arm 202 pivotally connected to fixed lever bracket 203, can be positioned below horizontal extensions 4b, 6b of frame sections 4, 6. Thus, fixed lever bracket 203 and / or the second end of lever arm 202 can be positioned at a lower height relative to the floor of the opening than the height of horizontal extensions 4b, 6b of frame sections 4, 6. This allows installation of a lift gate operator system even when space above the opening is limited, while preventing wear on lift gate operator components.

[0140] In one embodiment, the fixed lever bracket 203 may be mounted to the door frame 3. In one embodiment, the fixed lever bracket 203 may be mounted to a wall surrounding the opening.

[0141] Figure 6a The door is shown in a partially open position (i.e., a partially open vertical position). Therefore, the section of the door 8 provided with the drive unit does not travel to the curved interconnecting parts 4c, 6c of the frame sections 4, 6. Therefore, the section of the door 8 provided with the drive unit is essentially vertical. As will be seen in FIG. Figure 6c As further described, the lever arm 202 is in a position that allows the elongated transmission member 19 to be tensioned.

[0142] The fixed lever bracket 203 can be provided with rotation stops that are arranged to prevent the lever arm 202 from pivoting beyond the first position and the second position, respectively. Thus, the lever arm 202 can move within an angular range defined by the rotation stops. In one embodiment, one of the rotation stops can be formed by a wall surrounding the opening.

[0143] Figure 6bDoor 8 is shown in an open position. Thus, the section of door 8 provided with the drive unit has reached and / or possibly passed through curved interconnecting portion 4c. Consequently, the section of door 8 provided with the drive unit has an inclined orientation that follows the shape of curved interconnecting portion 4c or a horizontal orientation aligned with horizontally extending portions 4b, 6b. Consequently, lever arm 202 has moved from the second position to the first position, providing an offset distance between fixed point 201 and the additional torque provided by the lever effect provided by the lever.

[0144] like Figure 6c and Figure 6d In more detail, the lever arm 202 is movable between a first position and a second position relative to the vertically extending portions 4a, 6a along an angle α. When the lever arm 202 is in the first position, the angle α is between 10° and 45° relative to a vertical plane in an outward direction away from the door 8, and when the lever arm 202 is in the second position, the angle α is between 10° and 110° relative to the vertical plane in an inward direction toward the door 8. When the door 8 is in the closed position C (i.e., the vertically closed position), the vertical plane can be substantially parallel to the door 8 and is preferably aligned with the door 8.

[0145] Thus, the above-mentioned rotation stop can be arranged to prevent the lever arm 202 from rotating more than an angle between 10° and 45° in an outward direction away from the door 8 relative to the vertical plane, and from rotating more than an angle between 10° and 110° in an inward direction towards the door 8 relative to the vertical plane.

[0146] Go to Figures 7a to 7d The transmission mounting device 300 may include a guide rail 302 and a fixing element 303. The fixing element 303 is movably mounted to the guide rail 302. The fixing element 303 is provided with a fixing point 301, such that the fixing element 303 is in a first position when the door 8 is in the closed position, and in a second position when the door 8 is in the closed position. When the fixing element 303 is in the first position, the fixing point 301 is located at a horizontal distance d relative to the vertically extending portions 4a, 6a in the direction of the horizontally extending portions 4b, 6b.

[0147] Thus, when the driven section (i.e., the section provided with the drive unit) moves upward when the door 8 is in the partially open position, the fixed element 303 remains substantially in the second position because the portion of the elongated transmission element 19 connecting the section provided with the drive unit and the fixed element 303 is substantially vertical. When the driven section reaches the interconnecting portions 4c, 6c, the resulting tilted orientation of the elongated transmission element 303 causes the fixed element 303 to move along the guide rail 302 in the direction toward the horizontally extending portions 4b, 6b. Once the door 8 reaches its open position, the fixed element 303 is located at a horizontal distance d.

[0148] In one embodiment, the fixing element 303 can be spring-biased for applying a biasing force to return the fixing element 303 to the second position. Thus, when the door 8 moves toward the closed position, the fixing element 303 is guided back to the second position along the guide track 302. Thus, the desired tension is maintained in the elongated transmission member 19, and an unstable closing movement of the door 8 is mitigated.

[0149] In one embodiment, the fixing point 301 provided on the fixing element 303 is in the form of a clamp or ring connection attached to the elongated transmission member 19 .

[0150] In one embodiment, the guide track 302 is mounted to the door frame 3. In one embodiment, the guide track 302 is mounted to the wall surrounding the opening. The guide track 302 can be positioned near the upper edge of the opening 2. The guide track 302 can be arranged at a similar height to the horizontal portions 4b, 6b of the door frame.

[0151] In one embodiment, the fixing element 303 includes a slider or rolling element for engaging with the guide rail 302. Thus, the fixing element 303 may have a sliding surface that is in sliding contact with the guide rail 302 to allow movement of the fixing element 303. Alternatively, the fixing element 303 includes a rolling element that is in rolling contact with the guide rail 302 to allow movement of the fixing element 303.

[0152] like Figures 7c to 7d As depicted in more detail in FIG, the guide rail 302 can be arranged at an upward inclination relative to the horizontal plane. The inclined orientation of the guide rail 302 maintains the desired tension throughout the movement of the segment provided with the drive unit through the interconnecting portions 4c, 6c, thereby supporting the elongated transmission member 19. In one embodiment, the guide rail 302 can be oriented at an angle β relative to the horizontal plane, the angle β being between 5° and 45°. The horizontal plane can be aligned with the horizontal extensions 4b, 6b. The inclined orientation of the guide rail 302 allows for easier closing of the door 8 and additional support for the opening movement of the door 8.

[0153] In order to achieve further additional support for the movement of the door 8, the guide rail 302 may be close to the interconnecting parts 4c, 6c. In one embodiment, the guide rail 302 is arranged at a similar height as the horizontally extending parts 4b, 6b.

[0154] The present invention has been described in detail above with reference to embodiments of the present invention. However, as will be readily appreciated by those skilled in the art, other embodiments are equally possible within the scope of the invention as defined by the appended claims. It is to be noted that the present invention is generally applicable to entrance systems having one or more movable door members, without being limited to any particular type. The door member or each such door member may, for example, be a swing door member, a revolving door member, a sliding door member, a lifting and lowering sectional door member, a horizontal folding door member, or a pull-up (vertical lifting) door member.

Claims

1. A lift door operator system (1) for opening and closing an opening (2), comprising: A door frame (3) comprising a first frame section (4) at a first side (7) of the opening (2) and a second frame section (6) at a second side (5) of the opening (2), each of the first frame section (4) and the second frame section (6) comprising a vertically extending portion (4a, 6a), a horizontally extending portion (4b, 6b) and a curved interconnecting portion (4c, 6c); a door (8) arranged to move between an open position (O) and a closed position (C), said door (8) being movably connected to said door frame (3), said door (8) comprising a plurality of horizontal and interconnected sections (9a, 9b, 9c, 9d, 9e); a drive unit (10) mounted on the door (8), the drive unit (10) comprising at least one motor (11), the at least one motor (11) being arranged to move the door (8) from the closed position (C) to the open position; and an elongated transmission member (19) extending along said first side (7) of said opening (2), The drive unit (10) further comprises a driven transmission member (18) drivingly connected to the motor (11), the driven transmission member (18) being movably connected to the elongated transmission member (19) and being arranged to interact with the elongated transmission member (19) so as to drive the driven transmission member (18) along the elongated transmission member (19) by at least partially surrounding the driven transmission member (18). The lift door operator system further comprises a transmission mounting arrangement (100, 200, 300) for attaching the elongated transmission member (19), the transmission mounting arrangement (100, 200, 300) comprising a fixing point (101, 201, 301), the elongated transmission member (19) being mounted to the fixing point (101, 201, 301), the fixing point (101, 201, 301) being arranged at a horizontal distance ( 101, 201, 301) relative to the vertically extending portion (4a, 6a) in the direction of the horizontally extending portion (4b, 6b), at least when the door is in the open position (O). d ) The transmission mounting device (100, 200, 300) is arranged close to the upper edge of the opening (2).

2. A lift door operator system (1) according to claim 1, wherein: The elongated transmission member (19) is in the form of a bendable transmission member.

3. A lift door operator system (1) according to claim 1 or 2, wherein: The elongated transmission member (19) is in the form of a suspended transmission member.

4. A lift door operator system (1) according to claim 1 or 2, wherein: The elongated transmission member (19) is biased.

5. A lift door operator system (1) according to claim 4, wherein: The bottom end (68) of the elongated transmission member (19) is attached to a fixed point by means of a spring arrangement (74).

6. A lift door operator system (1) according to claim 1 or 2, wherein: The drive unit (10) is mounted to the bottommost section (9e) of the door (8).

7. A lift door operator system (1) according to claim 1 or 2, further comprising a first elongated transmission member (19) extending along the first side (7) of the opening (2) and a second elongated transmission member (19) extending along the second side (5) of the opening (2), wherein the lift door operator system (1) further comprises a first driven transmission member and a second driven transmission member (18), the first driven transmission member and the second driven transmission member (18) being arranged to interact with the first elongated transmission member and the second elongated transmission member (19) by at least partially surrounding the first driven transmission member and the second driven transmission member (18), respectively, wherein The transmission mounting device (100, 200) comprises a first fixing point and a second fixing point, the first elongated transmission member (19) being mounted to the first fixing point, the second elongated transmission member (19) being mounted to the second fixing point, and at least when the door is in the open position (O), the first fixing point and the second fixing point are respectively arranged at a horizontal distance ( ) from the vertical extension portion (4a, 6a) in the direction of the horizontal extension portion (4b, 6b). d ) place.

8. A lift door operator system (1) according to claim 1 or 2, wherein: The transmission installation device (100) comprises a fixed bracket (102), the fixed bracket (102) comprises the fixed point (101), and the fixed point (101) is stationary.

9. The lift door operator system (1) according to claim 1, wherein: The fixing point (201, 301) is movable and attached to the elongated transmission member (19) to move in response to movement of the door (8), the fixing point (201, 301) being arranged to be positioned at the horizontal distance ( 1 ) in the direction of the horizontal extension (4b, 6b) relative to the vertical extension (4a, 6a) when the door (8) is in the open position (O). d ) place.

10. A lift door operator system (1) according to claim 9, wherein: The transmission mounting device (200) comprises a lever arm (202), wherein the fixing point (201) is arranged at a first end of the lever arm (202), and the second end of the lever arm (202) is pivotally mounted to a fixed lever bracket (203) of the transmission mounting device (200), so that when the door (8) is in the open position (O), the lever arm (202) is in a first position, and when the door (8) is in the closed position (C), the lever arm (202) is in a second position, wherein when the lever arm (202) is in the first position, the fixing point (201) is arranged at the horizontal distance ( d ) place.

11. A lift door operator system (1) according to claim 10, wherein: The lever arm (202) is capable of moving relative to the vertically extending portion (4a, 6a) along an angle ( α ) moves, wherein when the lever arm (202) is in the first position, the angle ( α ) is between 10° and 45° relative to a vertical plane in an outward direction away from the door (8), and when the lever arm (202) is in the second position, the angle ( α ) is between 10° and 110° relative to the vertical plane in an inward direction towards the door (8).

12. A lift door operator system (1) according to claim 10 or 11, wherein: The transmission mounting arrangement (200) further comprises a damping element arranged to bias the movement of the lever arm (202).

13. A lift door operator system (1) according to claim 10 or 11, wherein: The fixed lever bracket (203) is provided with a rotation stop arranged to prevent the lever arm (202) from pivoting beyond the first position and the second position, respectively.

14. The lift door operator system (1) according to claim 9, wherein: The transmission mounting device (300) comprises a guide rail (302) and a fixing element (303) movably mounted to the guide rail (302), the fixing element (303) being provided with the fixing point (301) such that the fixing element (303) is in a first position when the door (8) is in the open position (O), and is in a second position when the door (8) is in the closed position (C), wherein when the fixing element (303) is in the first position, the fixing point (301) is arranged at the horizontal distance ( d ) place.

15. A lift door operator system (1) according to claim 14, wherein The fixing element (303) is spring biased to apply a biasing force to return the fixing element (303) to the second position.

16. A lift door operator system (1) according to claim 14 or 15, wherein: The fixing element (303) comprises a slider or a rolling element for engaging with the guide rail (302).

17. A lift door operator system (1) according to claim 14 or 15, wherein: The guide rail (302) is arranged to be inclined upward relative to a horizontal plane.

18. A lift door operator system (1) according to claim 17, wherein: The guide rail (302) is at an angle ( β ) orientation, the angle ( β ) between 5° and 45°.

19. A lift door operator system (1) according to claim 14 or 15, wherein: The guide track (302) is adjacent to the interconnecting portion (4c, 6c).

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