Rolling device

Abstract

A rolling device comprises: a housing (11) for accommodating a rolling element and a control and communication module, the control and communication module comprising a wireless receiver (30) connected to a control device (40) and a positioning device (50) connected to the control device, wherein the rolling device further comprises a driving device (60) connected to the control device and the rolling element, for driving and controlling the movement of the rolling element according to a first position acquired by the positioning device and a received wireless signal comprising a movement instruction and a second position, and a power supply device (70) for supplying power to the control and communication module and the driving device, wherein the housing is provided with a support assembly for carrying the rolling element (which is configured to establish a releasable connection with the housing), and an electrical interface suitable for establishing a connection between the rolling element and the control and communication module and the power supply device.

Description

Technical Field

[0001] The present invention relates to a rolling device for mounting on or integrating into a device for enabling the device to move along a surface. The rolling device can be remotely controlled and can be arranged to automatically move a group of devices according to a pre-set scenario.

[0002] More specifically, the device to be moved can be suitable for both indoor and outdoor use. A device for indoor use is typically a piece of furniture or an interior architectural element such as a wall or door. For outdoor use, a rolling device can be used, for example, to move Euro pallets or other devices that are cumbersome to move.

[0003] The present invention is applicable to all types of devices that are to be moved between different locations, both indoors and outdoors, where the movement is to occur along a surface, such as a floor. Background Art

[0004] Various devices, and particularly furniture, may be provided with wheels or rolling elements for facilitating movement of the device from one location to another, such as for reassembling the device or moving the device to access a space occupied by the device or to provide access to the device itself.

[0005] The applicant has previously developed a rolling device that can be integrated into devices such as furniture and movable walls for moving the device along a surface. This rolling device facilitates the movement of objects and can be used by anyone, regardless of physical condition or ability, to lift various devices incorporating the rolling device. This device is described in Norwegian Patent No. 316760 B1.

[0006] The rolling device of NO 316760 B1 comprises a cylindrical sleeve device for mounting, for example, on a leg of a piece of furniture, and a piston movably arranged in the cylindrical sleeve device. A spherical or spherical wheel is arranged inside the piston. The piston is movable between an upper position and a lower position by means of a snap-fit ​​system including a spring. When the piston is in the lower position, the piece of furniture can roll on the floor on which it stands, while when the piston is in the upper position, the wheel is located inside the cylindrical sleeve device, and the leg of the furniture (in which the rolling device is arranged) thus stands on the floor. As a result, when even a small force is applied to the furniture, the furniture does not accidentally roll on the floor and is instead positioned in the desired position. The solution is entirely mechanical.

[0007] The applicant has further developed this concept and provided a rolling device with an automated actuator system for moving a piston with a rolling element between upper and lower positions. This concept is disclosed in EP3102429. The upper position is a passive rest position, in which the wheel element is retracted in the rolling device, and the lower position is an active position for moving the rolling device along a surface. The actuator can be wirelessly controlled.

[0008] In a further version described in WO 2018138320, the applicant further developed the concept of a rolling device. WO 2018138320 proposes a rolling device for autonomously moving a device from a first position to a second position along a surface. The rolling device controls the movement of a rolling element based on position acquisition and given position and movement instructions. As described in EP 3102429 and NO 316760 B1, the rolling element can have a set or fixed vertical position relative to the rolling device, or can be arranged to shift between a retracted position that prevents the wheel element from moving along the surface and an extended position in which the wheel element is ready to move along the surface.

[0009] Rolling devices, such as those described in the aforementioned applicant's publication, include interacting mechanical and electrical components. When repairs are required or if a component needs to be exchanged for a new or replacement component, the process of separating and later reconnecting the component involves the complexity of all interacting components. While most components of a rolling device are stationary, rolling elements are mobile and subject to wear and therefore require replacement from time to time. Therefore, it is desirable to facilitate the replacement of a component of a rolling device, such as a rolling element.

[0010] Therefore, an object of the present invention is to provide a rolling device that can be released and assembled in a simple and reliable manner for the replacement of rolling elements. Another object of the present invention is to provide a solution that minimizes the costs for replacing rolling elements and also enables the customer or user of the rolling device to replace rolling elements without requiring the expertise of a skilled worker.

[0011] Another example is the integration of one or more rolling devices into a support structure or frame for transporting different products from one location to another along a surface.

[0012] The rolling device can be used indoors and outdoors. It can be used both onshore and offshore, for example on offshore installations such as drilling rigs and on the decks of ships.

[0013] The rolling device according to the invention can be integrated into the equipment when it is produced, or can be retrofitted into equipment that was not originally intended to be movable. The invention can be used both indoors and outdoors in buildings.

[0014] These and other characteristics of the invention will become apparent from the following description of exemplary embodiments thereof, given as non-limiting examples with reference to the accompanying drawings. Summary of the Invention

[0015] The present invention relates to a rolling device for use with a device that enables the device to be moved along a surface. The rolling device can generally be configured to engage with a device, such as various types of furniture pieces, Euro pallets, or other devices, wherein movement is facilitated by the use of one or more rolling devices. The rolling device can be mounted to the device in various ways; by integrating the rolling device into a cavity in the device to be moved (e.g., a piece of furniture), by directly or indirectly mounting the rolling device to the device to be moved via a fixing device.

[0016] The rolling device includes a housing configured to be connected to the device and configured to house a rolling element. The housing is arranged to house a control and communication module, including a wireless receiver connected to the control device, and a positioning device connected to the control device for detecting the position of the rolling device relative to its surroundings. The rolling device also includes a drive device connected to the control device and the rolling element, configured to drive and control the movement of the rolling element based on a first position detected by the positioning device and a received wireless signal including a movement instruction and a second position. Furthermore, the rolling device includes a power supply device for powering the control and communication module and a drive device.

[0017] The housing is further provided with a support assembly for carrying the rolling element and configured to establish a releasable connection with the housing. The housing also includes an electrical interface adapted to establish a connection between the rolling element and at least one of the control and communication module and the power supply device.

[0018] By the arrangement of the rolling device according to the invention, the support assembly carrying the rolling elements can be easily released from the housing by applying a release force, typically provided by a handle pull from a user.

[0019] The rolling elements may comprise a variety of elements such as a conventional wheel shape or having a more spherical or rounded shape or any other shape capable of providing a rolling motion that interacts with a surface.

[0020] The rolling element may typically comprise a wheel element arranged with an axle and in this case the support assembly may comprise first and second wheel bearing members each connected to an end of the axle.

[0021] The first wheel support member can be releasably mounted in a first guide groove disposed within the housing. The second wheel support member can be releasably mounted in a second guide groove disposed within the housing. The first and second guide grooves can be configured in the inner wall of the housing or in a component mounted within the housing. The first and second wheel support members supporting the wheel element are released from and mounted within the housing as a unit.

[0022] An example of a wheel used with a rolling device is a Mecanum wheel. A Mecanum wheel has a configuration that allows movement in any direction and is a conventional wheel with a series of rollers attached to its circumference. These rollers may typically each have an axis of rotation at an angle of 45° to the wheel plane and at an angle of 45° to a line parallel to the wheel's axis of rotation passing through the roller's center, but can of course be arranged with axes of rotation at angles other than 45°.

[0023] Furthermore, when the rolling element has a more spherical or rounded shape, the support assembly carrying the rolling element can be releasably arranged in first and second guide grooves within the housing. The guide grooves can then be configured so that the support assembly with the rolling element fits into place when positioned in a designated installation position, and can also include an inclined portion of the guide groove to facilitate movement of the support assembly with the rolling element into and out of the installation position. In this case, the support assembly can also be released by a user pulling on the handle.

[0024] The rolling device may further comprise attachment means for establishing a releasable connection between the support assembly and the housing. These attachment means may be selected from the following devices: magnets, click / out connections, releasable pawl connections, plug and socket connections.

[0025] The rolling device may further include a first guide member disposed in the first guide groove. The first guide member may be arranged to establish a releasable connection with the first wheel support member, for example, using the aforementioned attachment means. Furthermore, the rolling device may include a second guide member disposed in the second guide groove. The second guide member may be arranged to establish a releasable connection with the second wheel support member, for example, using the aforementioned attachment means.

[0026] When connected as a unit by the attachment means, the rolling device may include a drive motor for displacing the first guide member and the first wheel support member. The combined first guide member and the first wheel support member are displaced in the first guide groove. In addition, when connected as a unit by the attachment means, the drive motor is arranged to move the second guide member and the second wheel support member. The combined second guide member and the second wheel support member are displaced in the second guide groove. The displacement of these units in their respective guide grooves by the drive motor causes the rolling element to move to an extended position (part of the rolling element protrudes outside the housing) and a retracted position (the rolling element is located inside the housing).

[0027] The drive motor may be provided with a spindle connected to the bridge structure by a toothed engagement arrangement.The bridge structure may be provided with a first attachment portion connected to the first guide member and a second attachment portion connected to the second guide member for moving the wheel element between the extended and retracted positions.

[0028] In another form, the drive motor may be provided with a central spindle having two free ends, wherein

[0029] - one of the ends is brought into toothed engagement with a first attachment portion connected to the first guide member,

[0030] - the other end portion forms a toothed engagement with the second attachment portion,

[0031] to move the wheel element between extended and retracted positions.

[0032] The electrical interface may comprise a wired or wireless interface for communicating to and from the rolling element. When the electrical interface comprises a wired interface, a releasable electrical connection may be provided to ensure release of the support assembly from the housing. The second guide member may comprise a first connector portion, and the second wheel support member may comprise a second connector portion. The first and second connector portions may be arranged in a releasable connection, and may be configured as a plug and socket.

[0033] The guide member, wheel support member, inner housing portion and wheel element may be arranged as a modular unit such as a cassette for insertion into and removal from the housing. The drive motor may have a position above the wheel element or a position laterally displaced from the wheel element.

[0034] The drive means can usually be arranged inside the rolling element, but can also be located elsewhere in the rolling device. The gear mechanism can also be arranged inside the rolling element, and the rolling element can be arranged as a hub wheel, for example.

[0035] The drive means and the gear mechanism are optionally located above the wheel element or located at a position laterally displaced from the wheel element.However, the drive means and the gear mechanism may still be integrated as part of a modular unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In the following, embodiments of the present invention will be described in detail with reference to the accompanying drawings, in which:

[0037] Figure 1 It is a schematic diagram of the main components of the rolling device.

[0038] Figure 2 and Figure 3 are two schematic side views of a rolling device with rolling elements in two different positions.

[0039] Figure 4is a perspective view of a rolling device arranged for releasing a wheel element.

[0040] Figures 5 to 9 Details of the rolling device provided for releasing the wheel element are shown.

[0041] Figures 10 and 11 Shown Figure 5 Alternative embodiments of the arrangement of the rolling device.

[0042] Figure 12 It further shows Figure 5 Alternative embodiments of the arrangement of the rolling device.

[0043] Figure 1 A schematic diagram shows the various components and arrangements of a rolling device for mounting or integration into a device to enable the device to be moved along a surface. The device being moved can include furniture for a home or institution, movable walls, doors, or brackets for various indoor and outdoor uses. The rolling device is applicable to all types of devices that are not initially equipped with wheels or rolling elements, and these rolling devices can be easily moved when repositioning is necessary.

[0044] like Figure 1 As shown, a rolling device 10 is provided with a housing 11, and a rolling element 20 is provided at one end of the housing 1. When movement of the device is performed, the rolling element engages a surface.

[0045] When in the mounted position connected to the device to be moved, the rolling element 20 can be arranged in a set position at an end of the housing, typically the lower end of the housing. In another embodiment, the rolling element can be arranged in the housing so as to be movable between an upper position and a lower position. The upper retracted position is a passive rest position in which the wheel element is retracted in the rolling device, and the lower position is an extended active position for moving the rolling device along a surface.

[0046] Various devices for controlling the rolling elements 20 may be arranged in the housing 11. Figure 1 As shown, a wireless receiver 30 and a control device 40 are located within the housing. The wireless receiver 30 and the control device 40 are signal-connected to each other, with the receiver 30 configured to receive wireless control signals. The rolling device 10 is provided with a positioning device 50 for determining the position of the rolling device 10 relative to its surroundings. The positioning device 50 is connected to the control device 40.

[0047] There are various methods for detecting and acquiring the position of the rolling device 10. One example is determining the position from an external device such as a camera, or by using a laser radar to measure the distance from a reference point to the rolling device 10. Another example is using an RFID chip attached to the rolling device 10 or the device to be moved. Still another method is to determine the position of the rolling device 10 using an ultrasonic transmitter or a Bluetooth transmitter attached to the rolling device 10. Triangulation can then be used to determine the exact position.

[0048] This position can then be communicated to the positioning means 50 of the rolling device 10. These are well known methods and will not be described further here.

[0049] The driving device 60 is connected to the control device 40 and the rolling element 20 for driving and controlling the movement of the rolling element 20 according to the first position acquired by the positioning device 50 and the received wireless signal including the movement instruction and the second position. Figure 1 In FIG. 5 , the drive means 60 is shown to be arranged in the housing, but as an alternative, the drive means 60 may be arranged in the rolling element 20. Then, the rolling element 20 may be provided with an internal space capable of accommodating the drive means 60.

[0050] Different types of known drive means are possible for moving the rolling elements 20. In another embodiment, the rolling elements 20 are driven by a chain connected to a motor. The motor is preferably an electric or electromagnetic motor.

[0051] For reasons of simplicity, the wireless receiver 30 , the positioning device 50 and the control apparatus 40 may be designated as a control and communication module in the following.

[0052] The power supply 70 for powering the drive devices and the different electronic devices can be provided in different ways. The power supply 70 can include a common power supply system for powering both the control and communication module and the drive devices. Alternatively, the power supply can include two separate power supply systems; one for powering the control and communication module and the other for powering the drive devices. The power supply 70 can generally be located in the housing 11, such as Figure 1 However, when the power supply device 70 is configured as two independent power supply systems and the driving device 60 is located in the rolling element 20 , the power supply system for supplying power to the driving device 60 may be located in the rolling element 20 .

[0053] The power can be provided by a battery connected to the electronic device. In another embodiment, the power can be provided by a wireless power transmission device based on a time-varying electric, magnetic, or electromagnetic field. A receiver for receiving the field energy is placed in the housing of the rolling device 10. The received field energy is then converted into an electric current, which is used as a power source for various electronic devices arranged in the housing. In another embodiment of the present invention, the wireless power transmission is used to charge a battery connected to the electronic device disposed in the housing.

[0054] The scrolling device 10 operates as follows: the control device 40 receives movement commands via the wireless receiver 30. The control device 40, connected to the receiver 30, may include a microcontroller that interprets and acts on the transmitted sequence containing the movement commands. Upon receiving the movement command, the scrolling device 10 requests its position relative to its surroundings from the positioning device 50. This is the current and first position.

[0055] When the current position is established, a motion command for controlling the movement of the rolling element 20 is executed in the control device 40. The movement is based on the acquired first position of the rolling device 10 and the received motion command including the route and the second position. The rolling device 10 is then prepared to move the device from the first position to the second position according to the route.

[0056] In one embodiment of the present invention, the scrolling device 10 further includes a wireless transmitter 80. This embodiment is useful for coordinating the simultaneous operation of a group of several scrolling devices 10.

[0057] The wireless receiver 30 receives movement instructions for the scrolling device 10. The instructions can be transmitted, for example, by a remote control, a tablet or a smartphone with an installed application for controlling different scenarios that are pre-set or generated on site.

[0058] In such Figure 2 In the examples shown in FIG. 1 and the following figures, the rolling element is shown as a wheel element 100 .

[0059] Figure 2 The rolling device is shown with the wheel element 100 in its retracted position (the wheel element 100 is positioned within the housing 11 ).

[0060] exist Figure 3 , the wheel element 100 is shown in an extended position, wherein at least a portion of the wheel element 100 protrudes outside the housing 11 .

[0061] Figure 4 A solution for achieving a simple replacement of the wheel element 100 is shown. Only the components relevant for achieving the wheel replacement are shown, the remaining components are shown in FIG. Figures 1 to 3 and described above with reference to these figures.

[0062] The wheel element 100 has a wheel axle 53 and is connected to the first wheel supporting member 51 at one end of the wheel axle 53. Figure 4 As shown, the other end of the wheel axle 53 is connected to the second wheel supporting member 52. Figure 6 As shown, the ends of the wheel axle 53 are connected to the first and second wheel support members 51, 52 through the opening 54. The first wheel support member 51 is received in the first guide groove 55, and the second wheel support member is received in the second guide groove (not shown in the figure). The first and second guide grooves may have the following Figure 6 The T-shaped cross-section shown in FIG. 5 is a perspective view of a wheel support member 51, 52, and the first and second wheel support members 51, 52 can be configured as sliding members that can be displaced in corresponding first and second guide grooves 55. The guide grooves 51, 52 are arranged in the inner wall of the housing or in an element arranged along the inner wall, such as the inner housing part 90. The guide grooves 51, 52 can also be provided by rails installed at the inner wall of the housing.

[0063] The first and second wheel support members 51 , 52 of the load-bearing wheel element 100 are arranged to be released from the housing 11 as a unit.

[0064] The first wheel support member 51 is connected to the first guide member 57, which is also arranged to be displaced in the first guide groove 51. The first wheel support member 51 is connected to the first guide member 57 by a releasable attachment means such as magnets 61, 62. The first wheel support member 51 can be easily released from the connection with the first guide member 57 by applying a release force that exceeds the magnetic force between the attachment means (here shown as magnets 61, 62). The release force can generally be provided by a handle pulling force from the user.

[0065] exist Figures 2 to 12 In the example shown, the drive means 60 is arranged inside the wheel element 100, and therefore it is necessary to establish a connection between the wheel element 100 and the wheel element 100. Figure 1 The electrical connections between the remaining components are shown.

[0066] The second wheel support member 52 is connected to a second guide member 58, which is also arranged for displacement in a second guide groove, not shown in the figures. The second guide member 58 is provided with a first connector portion 63 for connecting with a second connector portion 64 so as to Figure 1 The first and second connector parts can be arranged as follows Figure 7 The plug and socket are shown. A cable 65 for connecting to the rest of the rolling device 10 is shown.

[0067] The components are easy to connect and disconnect, and release can be easily performed by a handle pull from the user. Figure 8 The first and second connector parts 63, 64 are shown connected, and Figure 7 The disconnected connector portion is shown. If desired, magnets can be provided in addition to the plug and socket. Of course, other electrical interfaces besides plug and socket can also be implemented.

[0068] When it is desired to disengage the wheel element 100, the first and second wheel supporting members 51, 52 are disengaged from the respective first and second guide members 57, 58. The first and second wheel supporting members 51, 52 are pulled out of the respective first and second guide grooves 55, and the assembly of the wheel element 100 and the first and second wheel supporting members 51, 52 is released as a unit.

[0069] As an alternative to using magnets to provide the releasable engagement between the wheel support member and the guide member, a snap or ratchet type click in / out connection may be chosen. Figure 9 An example of this solution is shown. The first guide member 57 is shown provided with a recessed bolt 66 (projecting into a suitable hole provided in the first wheel support member 51). A screw element 67 with a spring-loaded ball 68 is positioned transversely to the hole and is arranged to engage a groove 69 of the bolt 66 when the screw element 67 is inserted into the hole. Figure 9 The first guide member 57 and the first wheel support member 51 are shown connected. When disconnection is required, the pulling force from the user's handle easily overcomes the spring force of the ball 68 located in the groove 69, and the first wheel support member 51 is disconnected from the first guide member 57. When a new wheel element is later required to be installed, the first wheel support member 51 is inserted into the first guide groove 55, and the spring-loaded ball 68 is compressed into contact with the bolt 66 and snaps into the groove 99 to lock.

[0070] Other releasable locking means may also be used to connect the guide member and the wheel support member, such as releasable pawl elements that engage with grooves.

[0071] Figures 4 to 9 The rolling device 10 is shown with a drive motor 71 and a gear mechanism, which can have a first drive direction for moving the wheel element 100 to a retracted position and a second drive direction for moving the wheel element 100 to an extended position. The main shaft 72 of the drive motor is configured to engage with the first guide member 57 to move the first guide member 57 and the first wheel support member 51 within the first guide groove 55, thereby retracting or extending the wheel element 100. As driven by the drive motor 71, the second guide member 58 and the second wheel support member 52 will follow the movement of the first guide member 57 and the second wheel support member 52, because both units are connected to the wheel element 100. Alternatively, two drive motors can be used; one on each side of the wheel element 100, for moving each guide member 57, 58.

[0072] The guide member, wheel support member, inner housing portion 90 and wheel element may be arranged as a modular unit such as a cassette for insertion into and removal from the housing 11. The drive motor 71 may have a configuration such as Figure 4 The position shown, but can also be set as Figures 10 to 12 The positions shown, wherein the drive motor 71 is shown with an alternative position and a slightly different design of the drive motor 71.

[0073] Figure 10 and Figure 11 An alternative arrangement for transmitting torque from the drive motor 71 to the first and second guide members 57, 58 is shown. Figure 10 and Figure 11 As shown, the drive motor 71 is placed on a support structure 75 arranged as part of the housing, or alternatively, the support structure 75 can be a separate part attached to the inner wall of the housing. The drive motor 71 is provided with a main shaft 72 extending through the channel of the support structure. A portion of the main shaft 72 has a toothed structure and is arranged to engage with the external toothed structure of the sleeve 76. The sleeve 76 is accommodated by a ball bearing device through a second channel 79 (arranged through the support structure 75). The sleeve 76 is also provided with an internal toothed structure that engages with the toothed structure of the cylindrical portion 81 connected to the bridge structure 73. The bridge structure 73 has a first attachment portion 82 connected to the first guide member 57 and a second attachment portion 83 connected to the second guide member 58. When the drive motor 71 is driven, the main shaft 72 rotates the sleeve 76 in the second channel 79 of the support structure 75. The internal teeth of sleeve 76 mesh with the teeth of cylindrical portion 81, and depending on the driving direction of drive motor 71, the cylindrical portion 81 moves upward or downward, thereby moving bridge structure 73 upward or downward. When drive motor 71 operates in a first driving direction, the movement of bridge structure 73 causes first guide member 57 coupled to first wheel support member 51 and second guide member 58 coupled to second wheel support member 52 to move upward, moving wheel element 100 to the retracted position. Furthermore, when drive motor 71 operates in a second driving direction, the assembly of bridge structure 73, guide members 57, 58, and wheel support members 51, 52 moves wheel element 100 to the extended position.

[0074] Figure 12An alternative arrangement for transmitting torque from the drive motor 71 is shown, in which the main shaft 72 is positioned so that its axial direction is parallel to the axial direction of the wheel axle 53. The drive motor 71 is positioned above the wheel element 100. The main shaft 72 is disposed through the drive motor and centered relative to the drive motor, such that the first threaded end 83 of the main shaft is positioned to engage with the first threaded cap 86 connected to the first attachment portion 82. The second threaded end 83 of the main shaft is positioned to engage with the second threaded cap 87 of the second attachment portion 82. The rotational axis of the main shaft 72 is substantially perpendicular to the rotational axes of the first and second threaded caps 86, 87. The threaded ends 83, 84 of the main shaft and the threaded caps 86, 87 may have a worm screw configuration. When the drive motor 71 is driven upward in a first drive direction, the assembly of the attachment portions 82-83, the guide members 57, 58, and the wheel support members 51, 52 moves the wheel element 100 to the retracted position. When the drive motor 71 is operated in the second drive direction, the assembly of the attachment portions 82 - 83 , the guide members 57 , 58 and the wheel support members 51 , 52 moves the wheel element 100 to the extended position.

Claims

1. A rolling device (10) for use with an apparatus so as to enable the apparatus to move along a surface, wherein: The rolling device (10) comprises: - a housing (11) arranged to be attached to the device and arranged to house the rolling elements, wherein the housing (11) is arranged to house a control and communication module, the control and communication module comprising: - a wireless receiver (30) connected to a control device (40), - a positioning device (50), connected to the control device (40), for obtaining the position of the rolling device (10) relative to the surroundings; - a driving device (60), connected to the control device (40) and the rolling element (20), for driving and controlling the movement of the rolling element (20) according to the first position obtained by the positioning device (50) and the received wireless signal including the movement instruction and the second position, - a power supply device (70) for supplying power to the control and communication module and the drive device, wherein: - The housing (11) is provided with: a support assembly for carrying the rolling element (20) and configured to establish a releasable connection with the housing (11), An electrical interface adapted to establish a connection between the rolling element (20) and at least one of the control and communication modules and the power supply device (70), wherein: - the rolling element (20) comprises a wheel element (100) provided with a wheel axle (53), - the support assembly comprises a first wheel support member and a second wheel support member (51, 52), each wheel support member being connected to an end of the wheel axle (53), - the first wheel support member (51) is releasably arranged in a first guide groove (55) provided in the interior of the housing (11), - the second wheel supporting member (52) is releasably arranged in a second guide groove provided in the interior of the housing (11), wherein the first wheel supporting member carrying the wheel element (100) and the second wheel supporting member (51, 52) are released from the housing (11) and mounted into the housing as a unit.

2. The rolling device (10) according to claim 1, wherein: The attachment means for establishing a releasable connection between the support assembly and the housing (11) can be selected from the following: a magnet, a ratchet connection, a releasable pawl connection, a plug and socket connection.

3. The rolling device (10) according to claim 1, wherein: - a first guide member (57), arranged in the first guide groove (55) and arranged to establish a releasable connection with the first wheel support member (51), - A second guide member (58) arranged in the second guide groove and configured to establish a connection with the second wheel support member (52).

4. The rolling device (10) according to claim 3, wherein: The rolling device (10) includes a drive motor (71), wherein: - the first guide member (57) and the first wheel support member (51) are connected as a unit, - the second guide member (58) is connected to the second wheel support member (52) as a unit, And the drive motor (71) is arranged to move these units in their respective guide grooves for moving the wheel element (100) between an extended position in which the wheel element (100) protrudes outside the housing (11) and a retracted position in which the rolling element (20) is located inside the housing (11).

5. The rolling device (10) according to claim 4, wherein: The drive motor (71) has a main shaft (75) which is connected to a bridge structure (73) by a toothed engagement arrangement, wherein the bridge structure (73) has a first attachment portion (82) connected to the first guide member (57) and a second attachment portion (83) connected to the second guide member (58) for moving the wheel element (100) between an extended position and a retracted position.

6. The rolling device (10) according to claim 4, wherein: The drive motor (71) is arranged with a central spindle having two free ends, wherein One of the end portions is brought into toothed engagement with a first attachment portion (82) connected to the first guide member (57), The other end portion forms a toothed engagement with the second attachment portion (83), For moving the wheel element (100) between an extended position and a retracted position.

7. The rolling device (10) according to claim 3, wherein: The electrical interface includes a wired interface for communicating with the rolling element, and - the second guide member (58) comprises a first connector portion (63), - The second wheel support member (52) comprises a second connector part (64), wherein the first connector part and the second connector part are arranged in a releasable connection.

8. The rolling device (10) according to claim 1, wherein The rolling element (20) includes the drive means.

9. The rolling device (10) according to claim 1, wherein: The electrical interface includes a wireless interface for communicating with the rolling element.

Images