The present invention is related to a waste bag holder assembly according to the preamble of claim 1.

The present invention is especially related to a waste bag holder assembly providing compression of waste in a waste bag suspended to the waste bag holder assembly.

Background

Waste handling in public areas involve high costs due to high volume, frequent emptying of relatively low volume waste containers requiring costly manpower, as well as logistic. Another issue with waste handling is the high volume, which partly is due to waste with different size and volume, such as bottles, coffee cups, paper, etc. are put in the same waste container having a limited volume. This results in that there is a large amount of the available volume not being utilized for accommodating waste. When the bag in the waste container is removed it will contain a lot of volume just filled with air. GB191108282 A (Heinrich Toller) describes a bag holder with two horizontal parallel arms which can be pivoted in relation to each other, which arms also can be adjusted vertically.

From DE545962 A (Christian Mortz) it is known a bag holder with arms which can be moved vertically and in addition is pivotable in the horizontal plane.

In US2995329 A (Jr Louie R Talcott) is described a bag holder which is telescopic/vertically adjustable and has horizontally pivotable holding arms.

US836966 A (Charles M Gerson) describes a bag holder with two horizontal arms being moved by pitch racks connected to a common toothed wheel, which arms are arranged on a telescopic movable column.

Drawbacks of the prior art solutions are, among others, that they all are manually operated bag holders, and further that they are not arranged for compression of waste therein.

They will further not be arranged for optimization of logistic for emptying of the waste as the logistic will have to be based on manual observation and handling. As the prior art solutions are not arranged for compression of waste therein, this results in frequent emptying of the waste.

Further, as the prior art solutions are not arranged for compression of waste therein, the costs of transportation and handling of waste will be unnecessary high due to a lot of the volume is air. There is accordingly a need for a waste bag holder assembly arranged for compression of waste in a waste bag suspended therein.

It is further a need for a waste bag holder assembly which facilitate the logistic of handling of waste and reduces the volume of the waste, as well as costs and manpower.

Object

The main object of the present invention is to provide a waste bag holder assembly partly or entirely solving the drawbacks of prior art.

It is further an object of the present invention to provide a waste bag holder assembly facilitating the logistic of handling of waste. An object of the present invention is to provide a waste bag holder assembly arranged for compression of waste in a waste bag suspended thereto reducing the volume of the waste.

It is an object of the present invention to provide a waste bag holder assembly arranged for entirely or partly automatic compression of waste in the waste bag.

An object of the present invention is to provide a waste bag holder assembly enabling reception of waste also when a compression process is being performed.

An object of the present invention is to provide a waste bag holder assembly arranged for providing information of amount/level of waste in the waste bag which can be utilized in a compression process of the waste and/or in a management system for emptying of waste containers. An object of the present invention is to provide a waste bag holder assembly which is adapted for being arranged in existing or new waste containers. It is an object of the present invention to provide a waste bag holder assembly resulting in reduced costs and manpower of waste handling.

An object of the present invention is to provide a waste bag holder assembly having a compact solution using as little space as possible when arranged in a waste container.

It is further an object of the present invention to provide a waste bag holder assembly comprising few parts and requiring low maintenance.

It is further an object of the present invention to provide a waste bag holder assembly having a flexible design so the design easily can be modified in shape and size to adapt it to different waste containers.

It is further an object of the present invention to provide a waste bag holder assembly provided with integrated load sensing sensors avoiding the waste bag from being destroyed during compression and so that the compression stops in case of a full waste bag or if hitting uncompressible objects in the waste bag.

An object of the present invention is to provide a waste bag holder assembly provided with a control device for automatic operation, so that the compression can be done automatically without interaction by an operator.

It is further an object of the present invention to provide a waste bag holder assembly arranged for operating by normal grid power, chargeable units and/or integrated energy harvester devices.

Further objects of the present invention will appear from the following description, claims, and attached drawings.

The invention

A waste bag holder assembly according to the present invention is described in claim 1. Preferable features of the waste bag holder assembly are described in the remaining claims. A waste bag holder assembly (WBHA) for a waste container according to the present invention is formed by three main parts in the form of a support assembly, a bag holder device and driving unit.

The bag holder device according to the present invention is formed by a frame for suspending a waste bag. A waste bag in this context is e.g. formed from a thin, flexible, plastic film, nonwoven fabric, plastic textile, bioplastics, biodegradable plastics, or other material, preferably recyclable, which allows the waste bag to be compressed.

The bag holder device is further provided with arms arranged to a lower end of the frame, the arms being pivotable between an open position and a closed position. In open position the arms extends mainly in parallel with respective longitudinal sides of the frame, while in closed position the arms extend in a plane approximately or close to a perpendicular plane of the longitudinal sides of the frame, i.e. extending towards center of the frame, preferably with a space between them.

According to the present invention the bag holder device is arranged movable in vertical direction of the support assembly by means of a driving unit and movement of the bag holder device and associated arms in closed position in vertical direction of the support assembly provides compression of waste in the waste bag.

According to the present invention the support assembly is formed by a base and from the base vertically extending column arranged for accommodating the driving unit. The vertically extending column is according to one embodiment of the WBHA according to the present invention further provided with guide tracks at a front longitudinal side thereof, wherein the arms are provided with guiding pins at an end facing the front side extending into and in engagement with the respective guide tracks. The guide tracks exhibit a shape that move the arms to the closed position when the bag holder device is moved downwards in a relation to the vertically extending column and to the open position when the bag holder device is moved upwards in relation to the vertically extending column.

The sides of the frame preferably also have an extension in vertical direction, and the frame with the arms in a closed position form a basket adapted for receiving waste during a compression process. According to one embodiment of the WBHA according to the present invention the driving unit is movable in longitudinal direction of the vertically extending column on a vertically extending shaft arranged to the vertically extending column. The driving unit is arranged to a driving source/arrangement or provided with a driving source/arrangement for moving the driving unit up and down the vertically extending shaft, and thus the bag holder device in vertical direction of the support assembly.

The guide tracks according to a further embodiment of the WBHA exhibit a mainly L-shape, and the guide tracks are laterally reversed such that short part of the L-shaped guide tracks are facing away from each other, towards the longitudinal sides of the vertically extending column, wherein the short part of the L-shaped tracks are arranged at upper part of the front side. The mainly L- shaped tracks preferably exhibit an angle larger than 90 degrees between the short and long part of the L-shaped tracks, and thus inclines slightly downwards from the end of the short part towards the long part of the L-shaped track, respectively, seen in longitudinal direction of the front side, allowing gradually closing of the arms. According to the present invention the WBHA can further be provided with at least one waste level sensor for measure the level of waste in the waste bag/waste container and/or the waste level can be found by measuring current consumption of the driving source/arrangement driving the driving unit together with an encoder providing position of the bag holder device.

According to a further embodiment, the WBHA can further be provided with at least one proximity sensor which can be used to detect the presence of personnel close to the WBHA in connection with a compression process. Accordingly, if a detection is made, the compression process is not performed to avoid possible dangerous situations.

According to a further embodiment of the WBHA according to the present invention it is provided with integrated load sensing sensors for avoiding the waste bag from being destroyed during compression and so that the compression stops in case of a full waste bag or if hitting uncompressible objects in the waste bag.

The WBHA according to the present invention can further be provided with a communication unit, wireless and/or wired, enabling one-way or two-way communication with the WBHA.

The WBHA according to the present invention is further provided with a power supply source, in the form of a chargeable unit, such as batteries, and/or power grid connector, and possibly energy harvester device(s). The WBHA according to the present invention will further be provided with a control device provided with means and/or software for controlling driving source/arrangement for moving the driving unit and thus the bag holder device and associated arms for performing compression of waste in a waste bag. Accordingly, the present invention provides a WBHA arranged for suspension of a waste bag in a waste container, wherein the WBHA is provided with a bag holder device for suspending the waste bag, wherein arms arranged to lower end of the bag holder device can be moved between an open position and a closed position. The arms will in closed position also partly close the opening of the waste bag, but not seal it. The WBHA according to the present invention further provides compression of the waste in the suspended waste bag by that bag holder device with the arms in closed position are movable in vertical direction of the WBHA. As the arms in closed position do not seal the waste bag, this allows air to escape from the waste bag during compression of the waste in the waste bag. Further, with the arms in closed position the bag holder device forms a basket for receiving waste, allowing the waste container to be used during a compression process. The WBHA according to the present invention can be arranged for manual, semi-automatic and/or automatic compression of waste in the waste bag. By that the WBHA is provided with a waste level sensor or arranged for calculating the waste level, as mentioned above, this can provide information to the control device which automatically activates compression of waste when the waste level in the waste bag is above a given level or at given time intervals. In an alternative embodiment an operator is noticed when the waste level in the waste bag is above a given level or an operator manually inspects the waste bag, whereupon the operator manually activates the compression operation.

By that the WBHA according to the present invention includes a waste level sensor or calculates the waste level, as mentioned above, this information can be forwarded to a management system for waste handling. When the waste bag is full or close to full the management system can optimize the exchange/empty logistics. E.g. the WBHA according to the present invention can inform that no further compression of the waste in the waste bag is possible and thus the waste bag needs to be replaced or emptied soon. The management system can then be used to optimize the logistics of emptying of a number of waste containers. Further preferable features and advantageous details of the present invention will appear from the following example description, claims and attached drawings. Example

The present invention will below be described in further detail with references to the attached drawings where:

Figure 1 is a principle drawing of a waste bag holder assembly according an embodiment of the present invention seen from the front side,

Figure 2 is a principle drawing of the waste bag holder assembly according to the embodiment in Figure 1 seen from the rear side,

Figure 3 is a block diagram showing signal/data flow for controlling of the waste bag holder assembly, Figure 4 is a principle drawing of the waste bag holder assembly according to the present invention with a waste bag arranged,

Figure 5 is a principle drawing of the waste bag holder assembly in a first step in a compression process,

Figure 6 is a principle drawing of the waste bag holder assembly with the waste bag in compressed position, and

Figure 7 is a principle drawing of the waste bag holder assembly arranged in a standard waste container.

Reference is now made to Figures 1 and 2 showing principle drawings of a waste bag holder assembly (WBHA) 100 according to an embodiment of the present invention. The WBHA 100 is formed by a support assembly 110 formed by a base 111 and from the base 111 a vertically extending column 112. According to the first embodiment, the vertically extending column 112 exhibits a mainly U-shaped cross-section wherein the opening in the U-shape is arranged facing away from the base 111, but can also exhibit a mainly rectangular or quadratic cross-section. It will obvious for a skilled person that the vertically extending column 112 can exhibit other cross- sections than the ones shown in the Figures.

In the shown example the base 111 exhibits a mainly rectangular or quadratic shape, wherein the longitudinal sides thereof is provided with upwards protruding flanges, as well as short side thereof, facing forward, is provided with an upwards protruding flange. The base 111 can exhibit others shapes, such as circular, elliptic, hexagonal, octagonal or similar which will be within the knowledge of a skilled person. The vertically extending column 112 is arranged at rear part of the base 111 by means of attachment means, and thus together with the protruding flanges of the base 111 form a lower container or bucket which will retain lower part of a waste bag 300, further described below. This is only an example of how the vertically extending column 112 can be attached to the base 111 and other possible solutions will be obvious for a skilled person, such as that the base 111 and vertically extending column 112 are formed as one unit.

The WBHA 100 further includes a bag holder device 120 arranged to a driving unit 130. The bag holder device 120 is the shown embodiment formed by a mainly rectangular or quadratic frame 121 with an extension also in vertical direction forming a basket-shape, which frame 121 at rear end is provided with a fastening device 122 for arrangement to the driving unit 130. The fastening device 122, in the shown embodiment, is formed by longitudinally extending flanges 123a-b, at respective longitudinal sides thereof, which ends in respective fixing flanges 124a-b extending in a plane perpendicular to the longitudinal extending flanges 123a-b. According to the present invention the fixing flanges 124a-b are positioned a distance behind the frame 121 adapted the vertically extending column 112, such that when the bag holder device 120 is arranged to the vertically extending column 112 it can be moved in longitudinal direction of this. The bag holder device 120 is further provided with mainly rectangular arms 125a-b, provided with fixing flanges 126a-b at upper side thereof, wherein the arms 125a-b are arranged pivotally interior the frame 121 by that the fixing flanges 126a-b are arranged to front and rear sides thereof, respectively, such that the arms 125a-b, respectively are arranged pivotally from a parallel plane with the longitudinal sides of the frame 121 and towards center of the frame 121 to a plane being approximately or close to perpendicular to the plane of the longitudinal sides of the frame 121. In the shown embodiments the arms 125a-b are shown close to perpendicular, i.e. with an angle in relation to the perpendicular plane, in the closed position forming a funnels-shaped basket with the frame 121, as shown in Figures 5 and 6. The arms 125a-b preferably have a height such that when they are pivoted towards center of the frame 121 there is provided a space between them.

The driving unit 130 of the WBHA 100 is in the shown embodiment arranged to a vertically extending shaft 140 provided with threads (lead screw) rotatably arranged at rear side of the vertically extending column 112 by means of upper and lower bearing pedestals 141. The vertically extending shaft 140 is at upper end connected to an electric motor 150 for rotation of the shaft 140. The driving unit 130 is in the shown embodiment formed by a threaded section/element 131, typically a nut, arranged to the vertically extending shaft 140. The driving unit 130 further comprises a sliding plate 132 arranged movable in longitudinal direction of the vertically extending column 112, at rear side thereof, by means of sliding rails 133 arranged in longitudinal direction of the longitudinal sides of the vertically extending column 112, at interior sides thereof, to which sliding rails 133 the sliding plate 132 is arranged by means of slide bearing assemblies 134, enabling the sliding plate 132 to slide up and down along the sliding rails 133 as well as retaining it to the sliding rails 133.

The sliding plate 132 is further arranged to the threaded section/element 131 by appropriate fastening means, e.g. by that the sliding plate 132 is provided with a fixing flange, enabling controlled movement of the sliding plate 132 by rotation of the vertically extending shaft 140. The above mentioned fixing flanges 124a-b are further arranged to the sliding plate 132 by means of appropriate fastening means, such as bolts or similar. In this way controlled movement of the sliding plate 132 also results controlled movement of the bag holder device 120. In this way, when the vertically extending shaft 140 rotates the driving unit 130 due to the threaded section/element 131 will be moved upwards when the vertically extending shaft 140 is rotated in one direction and downwards when the vertically extending shaft 140 is rotated in the opposite direction.

According to the present invention, front side 113 of the vertically extending column 112 is further provided with two mainly L-shaped guide tracks 114a-b, wherein the two mainly L-shaped guide tracks 114a-b are laterally reversed such that short part of the L-shaped guide tracks 114a-b are facing away from each other, towards the longitudinal sides of the vertically extending column 112, wherein the short part of the L-shaped tracks 114a-b are arranged at upper part of the front side 113. The mainly L-shaped guide tracks 114a-b exhibit an angle larger than 90 degrees between the short and long part of the L-shaped guide tracks 114a-b, and thus inclines slightly downwards from the end of the short part towards the long part of the L-shaped track 114a-b, respectively, seen in longitudinal direction of the front side 113. The arms 125a-b are further provided with attachment flanges 127 at rear side extending mainly perpendicular to the longitudinal sides of the arms 125a-b, from which attachment flanges 127a-b are arranged guiding pins 128 projecting into the respective guide tracks 114a-b for engagement with the respective guide track 114a-b.

Accordingly, the mainly L-shaped guide tracks 114a-b will hold the arms 125a-b in an open position, i.e. in parallel with the longitudinal sides of the frame 121, when the guiding pins 128are positioned at upper part of the L-shaped tracks 114a-b, respectively, and will gradually close when the guiding pins 128 moves along the inclined short part of the L-shaped tracks 114a-b towards the long part of the L-shaped tracks 114a-b, and when the guiding pins 128 are positioned in the long part of the L-shaped tracks 114a-b they will be in a closed position, i.e. in a position approximately or close to perpendicular to the longitudinal sides of the frame 121. Accordingly, as the bag holder device 120 is moved downwards in relation to the longitudinal direction of the vertically extending column 112, towards the base 111, the guiding pins 128 first enter the inclined part of the short part of the L-shaped guide tracks 114a-b, resulting in that the arms 125a-b are moved towards each other and towards center of the frame 121, and as the guiding pins 128 enter the long part of the L-shaped guide tracks 114a-b, the arms 125a-b will be positioned in a closed position, in further movement of the bag holder device 120 towards the base 111, which below will be further described during compression of waste in a waste bag 300 below.

Similarly, when the bag holder device 120 is moved in upwards direction from the base 111 the arms 125a-b will be moved from closed position as the guiding pins 128 enter the inclined part of the short part of the guide tracks 114a-b and continue to be moved from each other until the guiding pins 128 reaches the upper end of the short part of the guide tracks 114a-b, wherein the arms 125a-b is in an open position.

Accordingly, by movement of the bag holder device 120 in longitudinal direction of the vertically extending column 112 by means of the driving unit 130 moving in longitudinal direction of the vertically extending shaft 140, the arms 125a-b pivot from an open position, i.e. spaced apart from each other, and a closed position where the arms 125a-b are positioned towards each other, and vice versa.

Different solutions can be implemented for moving the bag holder device 120 and thus the driving unit 130 up and down along the vertically extending shaft 140 in the vertically extending column 112. E.g. the driving unit 130 can be provided with an electric motor with a shaft with a toothed wheel arranged thereto which is in engagement with a toothed rack arranged in the vertically extending shaft 140. Another example is that the driving unit 130 is provided with an electric motor with a shaft provided with driving wheels with high friction in engagement with the vertically extending shaft 140. In yet another example movement of the driving unit 130 along the vertically extending shaft 140 is achieved by the use of band drive, a solution which will be within the knowledge of a skilled person. Other obvious solution will be apparent for a skilled person.

Reference is now made to Figure 3 which is a block diagram showing signal/data flow for controlling of the WBHA 100 according to the present invention.

The WBHA 100 will further be provided with power supply source 200 in the form of a chargeable unit (e.g. batteries) and/or power grid connection for powering the components of the WBHA 100.

The WBHA 100 will further preferably be provided with at least one waste level sensor 210 for measuring level of waste in a waste bag 300 arranged to the WBHA 100. Examples of waste level sensor would be laser, ultrasound, infrared, distance meter, and similar solutions, which will be within the knowledge of a skilled person. The waste level sensor 210 will typically be arranged at upper part of the WBHA 100 with sensitivity downwards. The choice of level sensor will be obvious for a skilled person based on available level sensors and is not further described herein. As an alternative or in addition to at least one waste level sensor 210, the waste level can be found by that one is using the current consumption of the electric motor 150 together with an encoder on the electric motor 150 providing position of the bag holder device 120 to calculate the degree of filling. Measurement of current consumption can also be used for preventing possible crush damage by that the compression process is to be stopped if a high current consumption is detected in a "wrong" place of the compression process.

Further, the WBHA 100 can be provided with at least one communication device 220 in the form of wired and/or wireless communication, e.g. WiFI, GSM, etc. The WBHA 100 will further be provided with a control device 230 provided with software and/or means for controlling the driving unit 130 and possible communication devices 220.

The control device 230 will further preferably be provided with software and/or means for registering waste level by means of the waste level sensor 210 or calculation of the waste level, as mentioned above, and based on this registration initiate a compression process by controlling the driving unit 130 and thus the bag holder device 120 and/or reporting the registered waste level to an operator and/or a management system for further processing/use, e.g. for optimization of logistics of emptying processes.

In the most simple embodiment the compression process will be based on manual inspection and manual activation. In another embodiment the compression process is arranged to be performed at desired intervals with or without the use of measurement of waste level. According to a further embodiment, the WBHA 100 is provided with at least one proximity sensor 250 which can be used to detect the presence of personnel close to the WBHA 100 in connection with a compression process. Accordingly, if a detection is made, the compression process is not performed to avoid possible dangerous situations. According to the present invention, it will be preferable to use an electric motor 150 with a moment sensor 240 or separate load sensor for the operation of the driving unit 130 and thus the bag holder device 120 to control the compression process, which will be described in further detail below. The load sensor 240 can also be used to detect possible crush danger, as described above.

References are now made to Figures 4-6 for description of how the WBHA 100 according to the present invention works. In Figures 4-6 it is further shown a waste bag 300 arranged to the bag holder device 120, i.e. suspended over the frame 121 such that the waste bag 300 is open and forms a volume below the frame 121 with the arms 125a-b and waste bag 300 in open position for accommodation of waste.

Figure 5 shows a situation where the bag holder device 120 has been moved some downwards, such that the guiding pins 128 of the arms 125a-b have been moved along the inclined part of the L-shaped guide tracks 114a-b, wherein the arms 125a-b have been moved partly from the open position towards a closed position. The arms 125a-b will in this position exert a force on the waste bag 300, from two sides, and start to close the waste bag 300 at lower end of the bag holder device 120. At further movement of the driving unit 130 and thus the waste bag holder 120, the arms 125a-b will be moved into closed position as shown in Figure 6 and in a closed position of the waste bag 300 below the bag holder device 120. The waste bag 300 is now in a position allowing the waste in the waste bag 300 to be compressed. Further, when the arms 125a-b are in closed position they together with the frame 121 form a funnel-shaped basket enabling the WBHA 100 to receive waste also during a compression process as the waste will be collected by the funnel- based basket which will fall into the waste bag 300 when the bag holder device 120 again is elevated and the arms 125a-b move to open position again.

In Figure 6 is shown a situation where the bag holder device 120 with the arms 125a-b in closed position has been moved to a lower position by movement of the driving unit 130 further downwards towards the base 111, thus compressing the waste in the waste bag 300. It should further be noted that the U-shaped base 111 will contribute to increased compression by that the lower part of the waste bag 300 is retained within the U-shaped base 111. By that the closed position of the arms 125a-b does not form a sealing of the waste bag 300, air is allowed to escape during the compression movement, and by that there is a space between the arms 125a-b the compression movement can be performed even if waste should be caught therebetween. After the compression process is performed the bag holder device 120 is moved to initial position and the arms 125a-b are moved to open position again by moving the bag holder device 120 upwards from the base 111 by means of the driving unit 130.

Accordingly, the waste bag 300 is arranged to the bag holder device 120 wherein initial movement of the bag holder device 120 results in that the arms 125a-b are moved to initially close the waste bag 300 below the bag holder device 120. By further movement of the bag holder device 120 downwards to a given distance or given resistance/load the waste content in the waste bag 300 is compressed and air allowed to escape/be pressed out. The bag holder device 120 is then returned to initial position wherein the arms 125a-b are returned to open position again and the waste bag 300 is again ready for receiving waste, hereunder any waste collected by the funnel-shaped basket during the compression process. This process can be repeated a desired number of times before the waste bag 300 must be emptied or replaced. According to the present invention the WBHA 100 can be arranged for manual, automatic and/or semi-automatic operation, as mentioned above.

The compressing process can e.g. be activated by personnel inspecting a waste container by means of a switch or similar arranged in connection with a waste container or by a remote controller or app on a smartphone if the WBHA 100 is provided with wireless communication or even from an exterior management system.

In automatic operation e.g. the waste level sensor 210 measuring the level of the waste in the waste bag 300 provides a signal to the control device 230 which activates the compression process if a given waste level is reached. The degree of compression of the waste in the waste bag 300 can be controlled by a moment sensor 240 or separate load sensor arranged in connection with the driving unit 130 or by implementing a given distance the driving unit 130 shall travel during the compression process, which also can be related to the waste level in the waste bag 300, i.e. different settings for different waste levels.

In a further embodiment of the WBHA 100 it further includes a sensor capable of analyzing the content of waste in the waste bag 300 and based on this determine the level of compression to be used, as it is a known fact that some waste are more compressible than others. This information will also be usable in detecting that waste in plastic are put in a waste container for paper/cardboard and vice versa, which will require different handling in waste sorting. By that the waste level sensor 210 can provide information that the waste bag 300 is close to full or full requiring it to be emptied or replaced, this information can be forwarded to the management system for optimization of the logistics of waste handling.

In public areas, such as shopping centers, train stations, airports, concerts or sport stadiums, etc., optimization of logistics will be both time saving and cost saving.

The WBHA 100 is preferably generic such that it can be mounted/integrated in both new and existing waste containers. An example of arrangement of the WBHA 100 in a common public waste container 400 is shown in Figure 7, which typically has openings at both sides for waste.

Modifications

The waste bag holder assembly 100 according to the present invention can further be provided with at least one energy harvester device for providing at least a part of the power required for operation of the waste bag holder assembly 100. E.g. the waste bag holder assembly 100 can be provided with solar cell(s) for charging of batteries. Such a solution will be especially suitable for outdoor use.

The bag holder device 120 and arms 125a-b can be realized in different length and height to easily adjust the waste bag holder assembly 100 to different types of waste containers. The bag holder device 120 and/or arms 125a-b can further be telescopic to allow for in situ adjustment of the length and/or height of the bag holder device 120 and/or arms 125a-b. The vertically extending column 112 can be realized in different length (height) to easily adjust the waste bag holder assembly 100 to different types of waste containers. The vertically extending column 112 can further be telescopic to allow for in situ adjustment of the length (height).

The main components of the waste bag holder assembly 100 can be arranged on different locations on the waste bag holder assembly 100 to adjust the waste bag holder assembly 100 to different waste containers. For instance the electric motor can either be arranged in upper or lower part, or via an angle gear on the sides.

The driving mechanism of the driving unit 130 can be realized with a belt drive instead of a lead screw. The guide tracks 114a-b of the arms 125a-b can be realized in different shapes than the described L-shape adapted to an actual waste container.