A rotating wheel mechanism and a movable device

Abstract

This invention discloses a rotating wheel mechanism and a movable device, belonging to the technical field of wheeled equipment. The rotating wheel mechanism is used to install onto the main body of a movable device. The mechanism includes a wheel frame, rotating wheels, a drive component, and a frame locking component. When applied to a movable device, the rotating wheels are located at the bottom of the main body, allowing the device to be easily moved to a target location. When the user no longer needs to move the device and requires it to be parked in a certain position, the user can control the drive component to move it to a second position. The drive component then controls the frame locking component to release the lock between the wheel frame and the main body. At this point, the user can rotate and open the wheel frame, tilting it relative to the main body for a more stable and safer parking.

Description

A rotating wheel mechanism and a movable device Technical Field

[0001] This invention relates to the field of pulley equipment technology, and more particularly to a rotating wheel mechanism and a movable device. Background Technology

[0002] In related technologies, to facilitate moving the device, casters are typically installed at the bottom of the device for easy dragging or pushing. When the user pulls or pushes the device, the casters rotate to reduce resistance during movement. This device can be an audio-visual device. However, when the user does not need to pull or push the device, it is prone to sliding and shifting when placed on the ground. For example, if the device is parked on a slope, it may easily slide away when the user releases it, which is unsafe.

[0003] Summary of the Invention

[0004] One objective of this invention is to provide a rotating wheel mechanism and a movable device that can easily move the device and also safely park it.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A rotating wheel mechanism for mounting to the main body of a movable device;

[0007] The rotating wheel mechanism includes: a wheel frame with a rotating connecting part for rotating connection to the main body of the equipment; a rotating wheel rotatably connected to the wheel frame; a driving member movably connected to the wheel frame; the driving member can move relative to the wheel frame under external force to adjust between a first position and a second position; the driving member has a first driving part; and a frame locking member movably connected to the wheel frame, having a first locked state and a first unlocked state, with a first end of the frame locking member disposed at the first driving part; wherein, when the driving member is in the first position, the frame locking member is in the first locked state, and the second end of the frame locking member is engaged with the main body of the equipment to restrict the rotation of the wheel frame relative to the main body of the equipment; when the driving member is in the second position, the frame locking member is in the first unlocked state, and the second end of the frame locking member can be separated from the main body of the equipment, so that the wheel frame can rotate relative to the main body of the equipment under external force.

[0008] Optionally, the rotating wheel mechanism further includes a wheel locking member, which is movably connected to the wheel frame and has a second locked state and a second unlocked state; the driving member is provided with a second driving part, and the first end of the wheel locking member is disposed in the second driving part;

[0009] When the drive unit is in the first position, the wheel locking member is in the second unlocked state, the wheel locking member is separated from the rotating wheel, and the rotating wheel can rotate relative to the wheel frame under the action of external force; when the drive unit is in the second position, the wheel locking member is in the second locked state, the wheel locking member is engaged with the rotating wheel, and the wheel locking member restricts the rotating wheel from rotating relative to the wheel frame.

[0010] Optionally, the first end of the wheel locking member abuts against the second driving part; the second driving part is used to drive the second end of the wheel locking member to engage with the rotating wheel during the process of the driving member moving from the first position to the second position, thereby restricting the rotation of the rotating wheel relative to the wheel frame; a second resetting member is provided between the wheel locking member and the wheel frame, the second resetting member is used to drive the second end of the wheel locking member to disengage from the rotating wheel during the process of the driving member moving from the second position to the first position, thereby allowing the rotating wheel to rotate relative to the wheel frame.

[0011] Optionally, the drive member is rotatably connected to the wheel frame, and the drive member can rotate downward to rotate from the first position to the second position, and the drive member can rotate upward to rotate from the second position to the first position.

[0012] Optionally, the wheel frame includes a horizontal frame and a vertical frame, with the rotating wheel rotatably mounted on the horizontal frame; the first end of the vertical frame is connected to the horizontal frame, and a rotating connection is provided at the second end of the vertical frame, the vertical frame being rotatably mounted on the main body of the equipment via the rotating connection.

[0013] Optionally, the drive member is rotatably connected to the crossbeam, and the drive member can rotate relative to the crossbeam about a rotation axis extending in the left-right direction; a first drive part is disposed on the outer periphery of the drive member, and the side of the first drive part near the vertical frame has a first drive surface, and the first end of the frame locking member abuts against the first drive surface; and / or, a second drive part is disposed on the side facing the rotating wheel, and the first end of the wheel locking member abuts against the second drive surface.

[0014] Optionally, the wheel locking element is slidably mounted on the horizontal frame, and the frame locking element is slidably mounted on the vertical frame.

[0015] Optionally, the cross frame has an internal mounting groove and a clearance slot communicating with the mounting groove; the driving component includes a rotating part and a stepping part, the rotating part is disposed in the mounting groove and rotatably connected to the wheel frame, and the stepping part extends out of the wheel frame from the clearance slot; and / or, the vertical frame has an internal first guide groove, and the frame locking component is slidably installed in the first guide groove; and / or, the cross frame has an internal second guide groove, and the wheel locking component is slidably installed in the second guide groove.

[0016] Optionally, the cross frame includes a first frame section and a second frame section, with a mounting groove disposed between the first frame section and the second frame section, and a rotating part of the drive component rotatably mounted between the first frame section and the second frame section; a second guide groove is disposed in the second frame section, and a wheel locking component is slidably mounted in the second guide groove of the second frame section; the vertical frame includes a third frame section and a fourth frame section, with the end of the third frame section connected to the first frame section, and the fourth frame section disposed in front of or behind the third frame section, connected to the third frame section, with a first guide groove disposed between the third frame section and the fourth frame section.

[0017] Optionally, the frame locking member includes a first locking member and a second locking member, which are connected by transmission. The end of the first locking member away from the second locking member is the first end of the frame locking member, and the first end of the frame locking member abuts against the first driving part of the driving member. The end of the second locking member away from the first locking member is the second end of the frame locking member.

[0018] Optionally, the frame locking member is configured such that, during the movement of the drive member from the first position to the second position, the first drive unit can drive the first locking member to move along the first direction, and the first locking member can drive the second locking member to move along the second direction, so that the second locking member disengages from the frame locking hole of the equipment body, thereby separating the frame locking member from the equipment body, wherein the second direction is opposite to the first direction.

[0019] Optionally, a transmission component is provided between the first locking component and the second locking component; the first locking component is provided with a first rack, the second locking component is provided with a second rack, and the transmission component is a gear, with both the first rack and the second rack meshing with the gear.

[0020] Optionally, the first end of the locking member abuts against the first driving part, which is used to drive the second end of the locking member to disengage from the main body of the equipment during the movement of the driving member from the first position to the second position. A first reset member is provided between the first locking member and the wheel frame, and the first reset member has a tendency to move away from the second locking member.

[0021] A mobile device includes: a device body; a rotating wheel mechanism as claimed in any one of the claims, wherein the wheel frame is rotatably connected to the device body via a rotating connection; wherein, when the driving member is in a second position and the frame locking member is in a first unlocked state, the wheel frame rotates relative to the device body under the action of an external force to open the wheel frame.

[0022] Optionally, the mobile device has a moving state and a parked state; when the mobile device is in the moving state, the drive unit is in the first position and the wheel frame abuts against the main body of the device; when the mobile device is in the parked state, the drive unit is in the second position and the wheel frame is tilted relative to the main body of the device.

[0023] Optionally, the main body of the equipment is provided with a frame receiving groove, and when the wheel frame is in motion, the wheel frame is embedded in the frame receiving groove; the groove wall of the frame receiving groove is provided with a frame locking groove, and the second end of the frame locking member is inserted into the frame locking groove.

[0024] Optionally, the bottom of the main body of the equipment is provided with support feet.

[0025] Optionally, the main body of the device is an audio-visual device, which includes a cabinet, a pull rod, a display device, and a wheel frame that is rotatably connected to the cabinet via a rotating connection part. The pull rod is connected to the cabinet, and the display device can be connected to the pull rod.

[0026] The beneficial effects of this invention are as follows: When the rotating wheel mechanism is applied to a mobile device, the rotating wheel is located at the bottom of the device body, so the device can be moved by pushing, pulling, dragging or other means, making the device easy to move to the target site and more flexible in use.

[0027] Furthermore, the wheel frame is rotatably mounted on the main body of the equipment. When the user does not need to move the equipment and needs to park it in a certain position, the user can control the drive component to move it to a second position. The drive component controls the movement of the frame locking component, so that the frame locking component releases the lock between the wheel frame and the main body of the equipment. At this time, the user can rotate and open the wheel frame, so that the wheel frame tilts relative to the main body of the equipment, so that a triangular space is formed between the wheel frame and the main body of the equipment, allowing the equipment to be parked more stably in the current position and more safely. Attached Figure Description

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0029] Figure 1 is one of the structural schematic diagrams of the rotating wheel mechanism according to an embodiment of the present invention; Figure 2 is another structural schematic diagram of the rotating wheel mechanism according to an embodiment of the present invention; Figure 3 is a cross-sectional view at position AA in Figure 1; Figure 4 is an enlarged view of part A in Figure 3; Figure 5 is an enlarged view of part B in Figure 3; Figure 6 is one of the internal structural diagrams of the rotating wheel mechanism according to an embodiment of the present invention; Figure 7 is a cross-sectional view at position BB in Figure 2; Figure 8 is an enlarged view of part C in Figure 7; Figure 9 is an enlarged view of part D in Figure 7; Figure 10 is an exploded structural schematic diagram of the rotating wheel mechanism according to an embodiment of the present invention; Figure 11 is an enlarged view of part E in Figure 10; Figure 12 is a driving diagram of the rotating wheel mechanism according to an embodiment of the present invention. Figure 13 is a diagram showing the arrangement of the first driving part of the rotating wheel mechanism according to an embodiment of the present invention; Figure 14 is a cross-sectional view of the mobile device according to an embodiment of the present invention; Figure 15 is an enlarged view of part F in Figure 14; Figure 16 is one of the structural schematic diagrams of the mobile device according to an embodiment of the present invention; Figure 17 is another structural schematic diagram of the mobile device according to an embodiment of the present invention (in a moving state); Figure 18 is another structural schematic diagram of the mobile device according to an embodiment of the present invention (in a parked state); Figure 19 is a schematic diagram showing the cooperation between the driving part and the frame locking part of the rotating wheel mechanism according to another embodiment of the present invention.

[0030] In the diagram: 100, Rotating wheel mechanism; 200, Equipment body; 210, Housing; 220, Tie rod; 230, Display device; 2001, Frame locking groove; 2002, Frame receiving groove; 300, Support leg; 10, Wheel frame; 20, Rotating wheel; 30, Driving component; 1101, First guide groove; 1102, Second guide groove; 1103, Mounting groove; 1104, Alignment groove; 11051, First mounting groove; 11052, Second mounting groove; 11, Horizontal frame; 111, First frame section; 112, Second frame section; 12, Vertical frame. Frame; 121, Rotating connecting part; 201, Wheel lock groove; 31, Rotating part; 32, Stepping part; 33, First driving part; 331, First driving surface; 34, Second driving part; 341, Second driving surface; 41, Frame locking member; 4101, First pin part; 42, First reset member; 411, First locking member; 412, Second locking member; 413, Transmission member; 414, First rack; 415, Second rack; 51, Wheel locking member; 52, Second reset member; 60, Rotating shaft; 61, First shaft part; 62, Second shaft part. Detailed Implementation

[0031] To make the technical problems solved by the present invention, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. In the description of the present invention, unless otherwise expressly specified and limited, the terms "connected" and "fixed" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood according to the specific circumstances. In the present invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features not being in direct contact but through another feature between them. Moreover, "above," "over," and "on top" of the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature. The first feature being "below," "under," or "below" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] As people's living standards continue to improve, their demand for entertainment activities is also increasing, giving rise to a wide variety of audio-visual devices. Audio-visual devices refer to devices that provide entertainment functions to meet users' leisure and entertainment needs. They typically include products such as game consoles, televisions, display devices, and microphones, and can be categorized into various types based on their usage scenarios and functions. For example, in a square dancing scenario, audio-visual devices may include display devices, microphones, and speakers to meet the needs of the dancers. In related technologies, if the audio-visual device does not have wheels, moving it is quite cumbersome. However, if the device has wheels, it is prone to accidental slippage, which is unsafe. For example, if the device is parked on a sloped surface, it may easily slide away if the user releases it, which is also unsafe.

[0033] Based on this, please refer to Figures 1 to 13. This application provides a rotating wheel mechanism for mounting the main body of a movable device, so that the device has the advantage of being easy to move and convenient to use the device in different locations.

[0034] When the rotating wheel mechanism 100 is in use, the user can adjust the position of the drive component 30 to adjust the position of the frame locking component 41, thereby locking the wheel frame 10 so that it cannot be opened, or unlocking the wheel frame 10 so that it can be opened. After operating the drive component 30 to control the frame locking component 41 to unlock the wheel frame 10, the wheel frame 10 can be opened to a state of tilt relative to the main body 200 of the equipment. The wheel frame 10 and the main body 200 of the equipment form a triangle-like shape, allowing the equipment to be parked more stably in the current position, making it safer.

[0035] Referring to Figures 14 to 18, this application also provides a movable device, wherein the rotating wheel mechanism 100 is rotatably mounted on the device body 200 via the wheel frame 10. In the normal state, the locking member 41 of the wheel frame 10 is engaged with the device body 200, and the wheel frame 10 is relatively fixed to the device body 200. The wheel frame 10 is closed and cannot be opened. At this time, the user can easily move the device by pulling, pushing, or other means, making the use of the device more convenient and flexible.

[0036] Furthermore, with this mobile device, the user can control the position of the drive unit 30 with their feet, allowing the user to lock or unlock the wheel frame 10 without bending over, greatly improving the user experience.

[0037] Referring to Figures 14 to 18, this application also provides a movable device in which a rotating wheel mechanism is rotatably mounted on the main body of the device via a wheel frame. In the normal state, the locking member of the wheel frame is engaged with the main body of the device, and the wheel frame is relatively fixed to the main body of the device. The wheel frame is closed and cannot be opened. At this time, the user can easily move the device by pulling, pushing, or other means, making the use of the device more convenient and flexible.

[0038] Furthermore, this mobile device allows users to control the position of the drive unit with their feet, enabling them to lock or unlock the wheel frame without bending over, greatly enhancing the user experience.

[0039] Please refer to Figures 1 to 18 for a description of the rotating wheel mechanism 100 and the mobile device employing the rotating wheel mechanism 100.

[0040] It should be noted that, for the purpose of clearly describing the configuration of each component, the accompanying drawings of this application illustrate the x-axis, y-axis, and z-axis directions for reference. The x-axis represents the left-right direction, the y-axis represents the front-back direction, and the z-axis represents the up-down direction. For example, x1 represents the left direction, x2 represents the right direction, y1 represents the forward direction, y2 represents the backward direction, z1 represents the upward direction, and z2 represents the downward direction. It should be noted that x, y, and z are only used as the internal coordinate system of the mobile device to illustrate the relative relationships between the components of the mobile device.

[0041] The rotating wheel mechanism 100 is used to install on the equipment body 200 so that the equipment body 200 can be easily pushed or pulled based on the rotating wheel 20 at the bottom.

[0042] The main body 200 of the device can be, but is not limited to, audio-visual equipment. Specifically, the main body 200 of the movable device can be, but is not limited to, audio-visual equipment. Audio-visual equipment refers to devices with audio functions, or devices with video functions, or devices with both audio and video functions. For audio-visual equipment used in schools, because it is equipped with a rotating wheel mechanism 100 and has rotating wheels 20 at the bottom, physical education teachers can pull the audio-visual equipment from the equipment room to the playground to play background music for broadcast gymnastics, allowing students to practice broadcast gymnastics. As another example, for square dance enthusiasts, the audio-visual equipment can be pulled from home to the square to play music.

[0043] The movable device includes a main body 200 and a rotating wheel mechanism 100. The rotating wheel mechanism 100 includes a wheel frame 10, a rotating wheel 20, a drive component 30, and a frame locking component 41.

[0044] The wheel frame 10 is provided with a rotatable connecting part 121, which is used for rotatably mounting to the equipment body 200. The rotating wheel 20 is rotatably connected to the wheel frame 10. The rotating wheel 20 supports the equipment body 200 and also rolls under the action of ground friction when the equipment body 200 needs to be moved, thereby reducing movement resistance and making the equipment body 200 easier to move. The wheel frame 10 is connected to the equipment body 200, and the rotating wheel mechanism 100 is mounted to the equipment body 200 via the wheel frame 10.

[0045] The drive member 30 is movably connected to the wheel frame 10. The drive member 30 has a first position and a second position. The drive member 30 can move relative to the wheel frame 10 under the action of an external force, so that the drive member 30 can be adjusted between the first position and the second position. The frame locking member 41 is movably connected to the wheel frame 10. Based on the rotating wheel mechanism 100 being rotatably mounted on the equipment body 200 via the wheel frame 10, the frame locking member 41 is used to respond to the control of the drive member 30 to lock the wheel frame 10 in a fixed and non-rotatable manner, or to allow the wheel frame 10 to be rotated and opened. Specifically, the frame locking member 41 has a first locked state and a first unlocked state. Referring to Figures 3 and 4, the first end of the frame locking member 41 is disposed on the first drive part 33. Referring to Figures 3, 5, 6, 14, and 15, the second end of the frame locking member 41 is used to cooperate with the equipment body 200. Specifically, the second end of the frame locking member 41 is provided with a first pin part 4101 for engaging with the equipment body 200 (the first pin part 4101 shown in Figures 5, 6 and 15 can be engaged with the equipment body 200) or separating, so as to lock the wheel frame 10 to the equipment body 200 or separate it from the equipment body 200 so that it can rotate.

[0046] When the driving component 30 is in the first position, the frame locking component 41 is in a first locked state, and the second end of the frame locking component 41 is engaged with the equipment body 200 to restrict the rotation of the wheel frame 10 relative to the equipment body 200. When the driving component 30 is in the second position (not shown in the figure), the frame locking component 41 is in a first unlocked state, and the second end of the frame locking component 41 can be separated from the equipment body 200. At this time, the wheel frame 10 can rotate relative to the equipment body 200 under the action of external force to open the wheel frame 10.

[0047] It should be noted that the illustrations of the driving component 30 in Figures 1 to 17 of this application all show the state of the driving component 30 when it is in the first position.

[0048] The user can use a foot pedal to control the movement of the drive unit 30 between a first position and a second position to control the position of the frame locking member 41, thereby engaging or disengaging the frame locking member 41 from the equipment body 200, thus locking or unlocking the wheel frame 10. When the wheel frame 10 is locked, it is relatively fixed to the equipment body 200 and cannot be opened; when the wheel frame 10 is unlocked, it can be rotated open, allowing it to tilt relative to the equipment body 200 to support it at an angle.

[0049] Optionally, the first end of the frame locking member 41 is disposed on the first drive unit 33, and the second end of the frame locking member 41 is provided with a pin (first pin portion 4101); correspondingly, the equipment body 200 is provided with a frame locking groove 2001, and the pin (first pin portion 4101) at the second end of the frame locking member 41 is used to cooperate with the frame locking groove 2001 of the equipment body 200. As shown in Figures 14 and 15, when the drive member 30 is in the first position, the pin (first pin portion 4101) is inserted into the frame locking groove 2001 of the equipment body 200 (not shown in the figure), and the wheel frame 10 cannot rotate; while when the drive member 30 is in the second position, the pin is disengaged from the locking groove of the equipment body 200, and the wheel frame 10 can rotate.

[0050] For example, in the normal state, the drive unit 30 is in the first position, the wheel locking member 51 is engaged with the device body 200, the wheel frame 10 is kept closed and abuts against the device body 200. At this time, if it is necessary to move the device to the second position, such as moving it from indoors to outdoors, the user pulls or pushes the device body 200, and the rotating wheel 20 at the bottom of the device body 200 rolls freely, thereby easily transferring the device to the second position.

[0051] The user needs to park the main body 200 at this location and adjust the drive component 30 to the second position. During this process, the first drive part 33 of the drive component 30 drives the frame locking component 41 to move, and the frame locking component 41 disengages from the main body 200. At this time, the wheel frame 10 can be rotated open by the user. As shown in Figure 18, after the wheel frame 10 is rotated open, the wheel frame 10 tilts relative to the main body 200. At this time, the rotating wheel 20 of the wheel mechanism is a certain distance away from the main body 200, and a triangular space is formed between the wheel frame 10 and the main body 200. The main body 200 can be more stably supported by the wheel frame 10. Even if a passerby accidentally bumps into the main body 200, because the wheel frame 10 provides near-triangular support, the main body 200 is not easy to tilt or tip over, and it is also relatively difficult to slip. It can be stably maintained in its current position, making it safer and more reliable. The main body 200 with a display device can be tilted to facilitate user observation.

[0052] In one embodiment, the device body 200 is an audio-visual device, and the device body 200 includes a speaker and / or a display screen.

[0053] In traditional technology, audio equipment is generally fixed, inconvenient to move, and its use is limited. To address this issue, the inventors considered adding casters 20 to the audio equipment for easier movement. However, they subsequently discovered that while the casters 20 allow for movement by pulling, dragging, or pushing, the equipment may be prone to safety issues when stationary, such as tilting, tipping over, or sliding away. Accidental sliding, tipping over, or collision with obstacles could damage or malfunction internal electronic components, leading to audio-visual equipment failure or malfunction.

[0054] The audio-visual equipment in this embodiment is equipped with a rotating wheel mechanism 100, making it convenient to move and use. Furthermore, when the audio-visual equipment is parked, the locking member 41 of the wheel frame 10 can be disengaged from the main body 200 by the drive component 30, allowing the wheel frame 10 to be flipped open and tilted to support the audio-visual equipment, making the parking of the audio-visual equipment more stable, less prone to tipping over, and safer.

[0055] In one embodiment, referring to Figures 7 to 11 and 13, the rotating wheel mechanism 100 further includes a wheel locking member 51, which is movably connected to the wheel frame 10. The drive member 30 not only controls the frame locking member 41 to control whether the wheel frame 10 can rotate and open, but also controls the wheel locking member 51 to control whether the rotating wheel 20 can rotate freely. When the rotating wheel 20 cannot rotate freely, it functions similarly to a brake, allowing the equipment to remain stably stationary in its current position, thus enhancing safety.

[0056] Optionally, the drive member 30 is provided with a second drive part 34, and a wheel locking member 51 is disposed between the drive member 30 and the rotating wheel 20. The first end of the wheel locking member 51 is disposed in the second drive part 34, and the second end of the wheel locking member 51 is used to cooperate with the rotating wheel 20. The wheel locking member 51 has a second locked state and a second unlocked state.

[0057] As shown in Figures 8 and 9, when the driving member 30 is in the first position, the wheel locking member 51 is in the second unlocked state, and the wheel locking member 51 is separated from the rotating wheel 20, allowing the rotating wheel 20 to rotate relative to the wheel frame 10 under external force. When the driving member 30 is in the second position (not shown in the figure), the wheel locking member 51 is in the second locked state, engaging with the rotating wheel 20, and the wheel locking member 51 is used to restrict the rotation of the rotating wheel 20 relative to the wheel frame 10.

[0058] When the drive component 30 is in the first position, the frame locking component 41 locks the wheel frame 10 to the main body 200 of the equipment, and the wheel locking component 51 unlocks the rotating wheel 20, thereby achieving the following: the wheel frame 10 cannot be opened, and the rotating wheel 20 can rotate. At this time, when moving the main body 200 of the equipment, the rotating wheel 20 rotates freely, making the equipment movement easy and effortless, and the wheel frame 10 is fixed in position and will not swing arbitrarily.

[0059] When the drive unit 30 is in the second position, the frame locking member 41 unlocks the wheel frame 10, and the wheel locking member 51 locks the rotating wheel 20, thus achieving the following: the wheel frame 10 can be opened, but the rotating wheel 20 cannot rotate freely. At this time, when the mobile device is parked in a certain place, the wheel frame 10 is open to tilt and support the main body 200 of the device, and the rotating wheel 20 is locked and cannot rotate. The main body 200 of the device is not easily knocked over by collisions, nor is it easy to slide or shift, making the parking of the main body 200 of the device safer.

[0060] The mobile device of this embodiment adopts a uniquely designed rotating wheel mechanism 100, which has the following advantages:

[0061] First, the equipment should be easily moved when needed.

[0062] Secondly, when the equipment is parked, it can be tilted and supported by the wheel frame 10, forming a triangular support structure. Even if the equipment is hit, it is not easy to tip over, which makes the equipment more stable and safer.

[0063] Third, when the equipment is parked, the rotating wheel 20 can be locked by the brake, making the equipment less likely to slide. This also prevents the equipment from accidentally tipping over due to foreign objects or protrusions on the ground getting stuck during the sliding process, making the equipment parked more stably and safer.

[0064] Fourth, the device can be stably parked on both horizontal and inclined surfaces, making it suitable for various application scenarios. For example, when the main body 200 of the device is an audio-visual device, such as a mobile device, users who enjoy square dancing can pull the device to the square. Even if the square surface is sloping, the device can be stably parked on the slope by opening the wheel frame 10 and cooperating with the rotating wheel 20 to brake.

[0065] Fifth, when the drive unit 30 performs a single action, it can simultaneously control both the rotating wheel 20 and the wheel frame 10, which is highly efficient. Users do not need to perform two separate control actions to control the rotating wheel 20 and the wheel frame 10 respectively.

[0066] Sixth, the braking and locking of the rotating wheel 20 and the unlocking and opening of the wheel frame 10 are configured to be achieved through the same control action on the drive component 30; correspondingly, the unlocking of the rotating wheel 20 and the locking and fixing of the wheel frame 10 are configured to be achieved through the same control action on the drive component 30. In this way, the equipment can be adjusted to be suitable for pulling and moving, or to be suitable for stable parking, through the same control action.

[0067] Seventh, a first driving part 33 and a second driving part 34 are respectively provided in the driving component 30, and a wheel locking part 51 and a frame locking part 41 are correspondingly provided between the driving component 30 and the rotating wheel 20, and between the driving component 30 and the main body of the equipment 200, so that the locking and unlocking states of the rotating wheel 20 and the wheel frame 10 can be adjusted simultaneously through the action of the same driving component 30.

[0068] In one embodiment, the end of the frame locking member 41 facing away from the drive member 30 is its second end, and the second end of the frame locking member 41 has a first pin portion 4101; the end of the wheel locking member 51 facing away from the drive member 30 is its second end, and the second end of the wheel locking member 51 has a second pin portion. Correspondingly, the rotating wheel 20 is provided with a wheel locking groove 201 on the side facing the drive member 30, and the equipment body 200 is provided with a frame locking groove 2001 on the side facing the drive member 30. Furthermore, when the drive member 30 is in the first position, the first pin portion 4101 is engaged with the wheel locking groove 201, and the second pin portion disengages from the frame locking groove 2001; when the drive member 30 is in the second position, the first pin portion 4101 is inserted into the wheel locking groove 201, and the second pin portion disengages from the frame locking groove 2001.

[0069] In one embodiment, the mobile device has a moving state and a stationary state. When a user needs to move the device, it is adjusted to the moving state; when a user needs to place the device in a certain position, it is adjusted to the stationary state.

[0070] As shown in Figures 14, 16, and 17, when the mobile device is in motion, the drive unit 30 is in the first position, and the wheel frame 10 abuts against the main body 200. At this time, the wheel locking member 51 is separated from the rotating wheel 20, and the rotating wheel 20 can rotate freely. The frame locking member 41 is engaged with the main body 200, and the wheel frame 10 is closed and cannot be opened.

[0071] As shown in Figure 18, when the mobile device is in a parked state, the drive unit 30 is in the second position, and the wheel frame 10 is rotated and opened to a state of tilt relative to the main body 200 of the device. The wheel frame 10 is used to support the main body 200 of the device.

[0072] Understandably, mobile devices may also have a third and fourth state.

[0073] Regarding the third state of the device: With the mobile device in a parked state, if the user adjusts the drive unit 30 back to the first position, but the wheel frame 10 is not closed by the user and remains in the open state, the rotating wheel 20 is in a freely rotating state, and the mobile device is in the third state. In this third state, the frame locking member 41 is driven to the extended position by the drive unit 30. However, due to the angle difference, the frame locking member 41 does not smoothly insert into the frame locking groove 2001 of the device body 200, or the frame locking member 41 cannot fully extend.

[0074] For the fourth state of the device: With the mobile device in the open state, if the drive unit 30 is adjusted back to the second position, but the wheel frame 10 is not opened by the user and is in the unlocked state, and the rotating wheel 20 is in the brake-locked state, then the mobile device is in the fourth state. In this fourth state, the wheel frame 10 is vertically fixed and not tilted open, and the rotating wheel 20 cannot rotate. Because the rotating wheel 20 is braked, the device is also less prone to slippage.

[0075] For example, the main body 200 of the movable device is an audio-visual device. The main body 200 includes a housing and a pull rod 220. The housing is equipped with an audio-visual playback module (such as a speaker or monitor). The pull rod 220 is connected to the housing, and the user can pull the device by holding the pull rod 220. The top of the wheel frame 10 is rotatably mounted on the main body 200, and the bottom of the wheel frame 10 is equipped with a rotating wheel 20. When it is necessary to move the audio-visual device, the wheel frame 10 is closed, and the drive component 30 is adjusted to the first position, so that the wheel frame 10 cannot be opened and the rotating wheel 20 can rotate. At this time, the audio-visual device is in motion. By pulling the pull rod 220, the audio-visual device can be easily dragged and its position adjusted. When it is necessary to park the audio-visual equipment, the drive component 30 is adjusted to the second position, and the top of the wheel frame 10 is used as the hinge point. The wheel frame 10 is rotated and opened, and the wheel frame 10 supports the main body of the equipment 200 at an angle. The rotating wheel 20 is braked and locked. At this time, the audio-visual equipment is in a parked state. The audio-visual equipment is parked stably, and the center of gravity of the main body of the equipment 200 is roughly located between the bottom support foot of the main body of the equipment 200 and the wheel mechanism. The audio-visual equipment is not easy to slip or tilt and tip over.

[0076] In one embodiment, referring to FIG15, a frame receiving groove 2002 is provided on the rear side of the device body 200. When the wheel frame 10 is in motion, the wheel frame 10 is at least partially embedded in the frame receiving groove 2002. The groove wall of the frame receiving groove 2002 is provided with a frame locking groove 2001, and the second end of the frame locking member 41 is inserted into the frame locking groove 2001. The frame receiving groove 2002 not only allows the mobile device to accommodate at least part of the wheel frame 10 when in motion, preventing the wheel frame 10 from protruding and affecting the appearance of the device, but also provides a limiting and protective function for the wheel frame 10 by the groove wall of the frame receiving groove 2002, keeping the wheel frame 10 stably in the closed position. Furthermore, the groove wall of the frame receiving groove 2002 facing the bottom provides a position for the frame locking groove 2001 with the opening facing downward, so that the second end of the top of the frame locking member 41 can be inserted into the frame locking groove 2001 from bottom to top, restricting the rotation of the wheel frame 10.

[0077] For example, when the audio-visual device is in use while parked, the front of the device body 200 faces the user and the rear of the device body 200 faces away from the user. For example, the device body 200 has a sound hole on the front and the wheel frame 10 is stored in the rack receiving slot 2002 on the rear of the device body 200. In this way, the sound can be transmitted to the user's area and the user cannot see the wheel frame 10, resulting in a good user experience.

[0078] In one embodiment, a support foot 300 is also provided at the bottom of the main body 200 of the device. The support foot is located at the front, and the rotating wheel 20 is located at the rear. Referring to FIG18, when the device is in a parked state, the front of the device is supported by the support foot 300, and the rear is supported by the braked rotating wheel 20 at the bottom of the inclined wheel frame 10. The device is parked stably, providing stable support for the main body 200 of the device. The device is not easy to slide or tip over, and the safety is high.

[0079] It is understandable that audio-visual equipment with many internal electronic components is easily damaged if it is tipped over or bumped, which can easily lead to malfunction and high repair costs. However, the audio-visual equipment in this embodiment, based on the innovative design of the rotating wheel mechanism 100, has the function of allowing the main body of the equipment 200 to be parked stably and safely, and the control operation is simple and convenient, taking into account the convenience of easy movement of the equipment, the safety of equipment use, and the convenience of user operation and control.

[0080] In one embodiment, when the rotating wheel mechanism 100 is provided with a locking member 41 and the driving member 30 is provided with a first driving part 33, the rotating wheel mechanism 100 is configured as follows:

[0081] Referring to Figure 4, the first end of the frame locking member 41 abuts against the first driving part 33, and a first reset member 42 is provided between the frame locking member 41 and the wheel frame 10. The first reset member 42 is used to move the second end of the frame locking member 41 toward the frame locking groove 2001 of the equipment body 200 during the movement of the driving member 30 from the first position to the second position, that is, to move the frame locking member 41 to the first unlocked state. During the movement of the driving member 30 from the first position to the second position, the first reset member 42 accumulates a reset force. The first reset member 42 is used to keep the first end of the frame locking member 41 abutting against the first driving part 33 during the movement of the driving member 30 from the second position to the first position, and to move the second end of the frame locking member 41 toward the frame locking groove 2001 of the equipment body 200 until the frame locking member 41 is inserted into the frame locking groove 2001, and the wheel frame 10 is engaged with the equipment body 200 through the frame locking member 41.

[0082] For example, the opening of the frame locking groove 2001 of the device body 200 faces downward. When the drive member 30 is controlled by the user to rotate downward, during the movement of the drive member 30 from the first position to the second position, the first drive part 33 acts on the first end of the frame locking member 41, causing the second end of the frame locking member 41 to move downward until it disengages from the frame locking groove 2001 of the device body 200, allowing the user to rotate and open the wheel frame 10. When the drive member 30 is controlled by the user to rotate upward, during the movement of the drive member 30 from the second position to the first position, the reset force of the first reset member 42 acts on the frame locking member 41, causing the second end of the frame locking member 41 to move upward until it inserts into the locking groove of the device body 200, thereby engaging the wheel frame 10 with the device body 200, preventing the wheel frame 10 from rotating. In Figures 3 and 4, the drive member 30 is in the first position. In Figure 3, downward rotation of the drive member 30 refers to counterclockwise rotation, and upward rotation of the drive member 30 refers to clockwise rotation.

[0083] In one embodiment, when the rotating wheel mechanism 100 is provided with a wheel locking member 51 and the driving member 30 is provided with a second driving part 34, the rotating wheel mechanism 100 is configured as follows:

[0084] Referring to Figure 9, the first end of the wheel locking member 51 abuts against the second driving part 34, and a second reset member 52 is provided between the wheel locking member 51 and the wheel frame 10. The second driving part 34 is used to move the second end of the wheel locking member 51 towards the wheel lock groove 201 inside the rotating wheel 20 during the movement of the driving member 30 from the first position to the second position, that is, to move the wheel locking member 51 to the second locked state. During the movement of the driving member 30 from the first position to the second position, the second reset member 52 accumulates a reset force. The second reset member 52 is used to keep the first end of the wheel locking member 51 abutting against the second driving part 34 during the movement of the driving member 30 from the second position to the first position, and to move the second end of the wheel locking member 51 away from the rotating wheel 20 until the wheel locking member 51 disengages from the wheel lock groove 201.

[0085] For example, taking the rotating wheel 20 located on the left side of the wheel frame 10 as an example, a wheel locking groove 201 is provided on the right side of the rotating wheel 20, with the groove opening facing right. When the driving member 30 is controlled by the user to rotate downward, during the process of the driving member 30 moving from the first position to the second position, the first driving part 33 of the driving member 30 acts on the first end of the wheel locking member 51, causing the second end of the wheel locking member 51 to move to the left until it inserts into the wheel locking groove 201 of the rotating wheel 20, restricting the rotation of the rotating wheel 20 and braking and locking the rotating wheel 20. When the driving member 30 is controlled by the user to rotate upward, during the process of the driving member 30 moving from the second position to the first position, the reset force of the second reset member 52 acts on the frame locking member 41, causing the second end of the wheel locking member 51 to move to the right until it disengages from the wheel locking groove 201 of the rotating wheel 20, thereby separating the wheel locking member 51 from the rotating wheel 20, allowing the rotating wheel 20 to rotate freely.

[0086] Optionally, the first reset member 42 and the second reset member 52 are elastic members, such as springs, which accumulate elastic force during the movement of the driving member 30 from the first position to the second position. In other embodiments, the first reset member 42 and the second reset member 52 can also be magnets, which accumulate magnetic force during the movement of the driving member 30 from the first position to the second position. Magnetic force refers to magnetic attraction or magnetic repulsion.

[0087] In general, when the rotating wheel mechanism 100 includes a frame locking member 41, a wheel locking member 51, a first reset member 42, and a second reset member 52, and the driving member 30 includes a first driving part 33 and a second driving part 34, the advantages of the aforementioned embodiment are:

[0088] First, the drive member 30 is configured such that, during the movement of the drive member 30 to the second position, the first drive unit 33 and the second drive unit 34 respectively push the frame locking member 41 and the wheel locking member 51 to move, so that the frame locking member 41 unlocks the wheel frame 10 and the wheel locking member 51 locks the rotating wheel 20, thereby facilitating the adjustment of the mobile device to a parking state.

[0089] The two locking parts of the drive unit 30 are controlled by directly abutting and pushing the two locking parts, allowing the mobile device to be adjusted to the aforementioned parking state. The entire control and adjustment process is stable and reliable. Furthermore, the first end of the frame locking part 41 and the first end of the wheel locking part 51 only need to abut against the first drive part 33 and the second drive part 34 of the drive unit 30, respectively. The frame locking part 41, the wheel locking part 51, and the drive unit 30 do not need to be assembled by means of snap-fit ​​or fasteners, making the overall structure simpler. Therefore, it balances the smoothness of control with the simplicity of structure and assembly.

[0090] For example, the first drive unit 33 abuts against the push frame locking member 41 through the first drive surface 331 with a raised cam-like surface, and the second drive unit 34 abuts against the push wheel locking member 51 through the second drive surface 341 with a raised cam-like surface.

[0091] Second, during the movement of the drive component 30 to the first position, it can be reset based on the first reset component 42 driving the frame locking component 41 and the second reset component 52 driving the wheel locking component 51. During the reset process, it is not necessary to use gravity or other means to reset the two locking components, making the reset action of the two locking components more reliable.

[0092] Furthermore, when the mobile device is in motion, since it needs to be pulled and moved, it is required that the mobile device be able to remain stably in motion. At this time, the frame locking member 41 can be kept in the state of being inserted into the frame locking groove 2001 of the main body 200 based on the first reset member 42, and the wheel locking member 51 can be kept out of the wheel locking groove 201 of the rotating wheel 20 based on the second reset member 52. This keeps the wheel frame 10 closed and the rotating wheel 20 free to rotate. Even if the mobile device bumps during the sliding process on the ground, the first reset member 42 and the second reset member 52 will keep the frame locking member 41 and the wheel locking member 51 in their current state.

[0093] In other embodiments, the first reset member 42 or the second reset member 52 may not be provided. Instead, some other cooperating structures may be provided on the drive member 30 so that the drive member 30 can rotate from the second position to the first position, thereby resetting the frame locking member 41 and the wheel locking member 51.

[0094] In one embodiment, the drive member 30 is rotatably connected to the wheel frame 10. The drive member 30 can passively rotate around a left-right extending rotation axis under the action of external force (L1 in Figure 7 indicates the rotation axis) to switch between a first position and a second position. Correspondingly, by setting the drive member 30 in a lower position and configuring it as a foot pedal, when using a mobile device, such as an audio-visual device, if the user needs to adjust the device to a moving or stationary state, they can step down or flick up the drive member 30 to rotate it and control its position, thereby locking or unlocking the wheel frame 10 and the rotating wheel 20. Therefore, the drive member 30 is mounted on the wheel frame 10 in a rotating manner, making the user's control of the drive member 30 simple and comfortable, and providing a good user experience. Of course, in other embodiments, the drive member 30 is set in a higher position, and the user can also control the rotation of the wheel 20 and the wheel frame 10 by rotating the drive member 30 by hand.

[0095] Optionally, when the drive member 30 is in the first position, it is located at an upper position and angle; when the drive member 30 is in the second position, it is located at a lower position and angle. In other words, the drive member 30 can rotate downwards under the action of an external force to rotate from the first position to the second position, and the drive member 30 can rotate upwards under the action of an external force to rotate from the second position to the first position. For example, after the user pulls the movable device to the target position, if they want to park the device, they only need to step down on the drive member 30 to adjust the device to the parked state; and stepping down on the drive member 30 is easier and faster than kicking up the drive member 30. In this embodiment, after the user pulls the device to the target position, stepping on the drive member 30 can adjust the device to the parked state, which can quickly and conveniently park the device, and the device can be used immediately after parking, resulting in a good user experience.

[0096] In other embodiments, based on the rotatable mounting of the drive member 30 on the wheel frame 10, the position of the drive member 30 can also be: when the drive member 30 is in the first position, it is in a lower position and angle; when the drive member 30 is in the second position, it is in a higher position and angle.

[0097] In other embodiments, the drive member 30 may be slidably mounted on the wheel frame 10, thereby allowing the drive member 30 to be adjusted between a first position and a second position by sliding on the wheel frame 10.

[0098] In one embodiment, the wheel frame 10 includes a horizontal frame 11 and a vertical frame 12, with the rotating wheel 20 rotatably mounted on the horizontal frame 11. The first end of the vertical frame 12 is connected to the horizontal frame 11, and the rotating connection part 121 of the wheel frame 10 is provided at the second end of the vertical frame 12. The second end of the vertical frame 12 is rotatably mounted to the equipment body 200 through the rotating connection part 121.

[0099] In this embodiment, the horizontal frame 11 is used to provide the mounting position for the rotating wheel 20 and the drive component 30. The second end of the vertical frame 12 can not only be used to cooperate with the main body 200, but the vertical frame 12 can also be used as a main support component to support the main body 200 at an angle when the vertical frame 12 is open.

[0100] Optionally, the first end of the bottom of the vertical frame 12 is connected to the horizontal frame 11, and the second end of the top of the vertical frame 12 is rotatably mounted on the equipment body 200.

[0101] Optionally, the wheel frame 10 has an approximately inverted "T" shape, with the first end of the vertical frame 12 connected to the middle area of ​​the horizontal frame 11. The horizontal frame 11 extends in the left-right direction, and rotating wheels 20 are rotatably mounted on both ends of the horizontal frame 11. Compared to a flat wheel frame 10 structure, the T-shaped support structure in this embodiment saves materials, weight, and cost while achieving assembly with the rotating wheels 20 and the main body of the equipment 200.

[0102] In one embodiment, the wheel frame 10 includes a horizontal frame 11 and a vertical frame 12. A drive member 30 is rotatably connected to the horizontal frame 11 and can rotate relative to the horizontal frame 11 about a rotation axis extending in the left-right direction. Correspondingly, rotating wheels 20 are rotatably mounted at the left and right ends of the horizontal frame 11. The drive member 30 is located between the two rotating wheels 20. Wheel locking members 51 are provided between the drive member 30 and the left rotating wheel 20, and between the drive member 30 and the right rotating wheel 20. The vertical frame 12 is located above the horizontal frame 11, and correspondingly, a frame locking member 41 is provided on the upper side of the drive member 30.

[0103] In this embodiment, the user can control the reciprocating motion (e.g., left and right movement) of the wheel locking members 51 on both sides of the drive member 30 and the reciprocating motion (e.g., up and down movement) of the frame locking member 41 on the upper side of the drive member 30 by controlling the drive member 30 to swing up and down. In order to simultaneously drive and control both the frame locking member 41 and the wheel locking member 51 through one rotation of the drive member 30, the drive member 30 is configured as follows: a first drive part 33 is disposed on the outer periphery of the drive member 30. Rotating wheels 20 are provided on both sides of the drive member 30, and second drive parts 34 are provided at both ends of the drive member 30. Wheel locking members 51 are provided between the drive member 30 and the rotating wheels 20 on both sides.

[0104] Understandably, compared to configuring the drive component 30 to be movably mounted on the wheel frame 10, this embodiment configures the drive component 30 to be rotatably mounted on the wheel frame 10, with the second drive unit 34 positioned at the left and right ends of the drive component 30 and the first drive unit 33 positioned on the upper side of the drive component 30. This allows the user to control the rotation of the drive component 30, controlling the movement of the locking member of the wheel frame 10 via the first drive unit 33 at the left and right ends, and controlling the movement of the locking member 41 of the frame via the second drive unit 34 on the outer periphery, thereby controlling the locking state of the rotating wheel 20 and the wheel frame 10. This not only enables a rotational movement of the drive component 30 but also controls the locking state of the rotating wheel 20 and the wheel frame 10, and ensures reliable cooperation between the components.

[0105] Meanwhile, based on this embodiment, the second drive units 34 on the left and right sides of the drive unit 30 and the wheel locking unit 51 can be symmetrically arranged based on the same structure (mirror symmetrical arrangement), which is convenient for manufacturing and assembly.

[0106] Optionally, the first drive unit 33 has a first drive surface 331 on the side near the vertical frame 12, and the first end of the bottom of the frame locking member 41 abuts against the first drive surface 331. Exemplarily, the first drive surface 331 is a convex surface with varying protrusion height, so that the first drive surface 331 contacts the first end of the frame locking member 41 at different positions of protrusion height during the up-and-down swing of the drive member 30.

[0107] Optionally, the second drive unit 34 has a second drive surface 341 on the side near the rotating wheel 20, and the first end of the inner side of the wheel locking member 51 abuts against the second drive surface 341. Exemplarily, the second drive surface 341 is a convex surface with varying protrusion height, so that the second drive surface 341 rotates accordingly during the up-and-down swinging of the drive member 30, and the different positions of the protrusion height of the second drive surface 341 contact the first end of the wheel locking member 51.

[0108] In one embodiment, the second driving part 34 is a second arc-shaped protrusion disposed on the side of the driving member 30 near the rotating wheel 20, and the second driving surface 341 is the surface of the second arc-shaped protrusion near the rotating wheel 20. The first end to the second end of the second arc-shaped protrusion extends around the axis of rotation of the driving member 30 and the protrusion height gradually increases. As the driving member 30 rotates, the first end of the wheel locking member 51 abuts against different protrusion positions of the second arc-shaped protrusion, so that the wheel locking member 51 moves back and forth.

[0109] In one embodiment, the first driving part 33 is a first arc-shaped protrusion, and the first driving surface 331 is the surface of the first arc-shaped protrusion near the rotating wheel 20. The first end to the second end of the first arc-shaped protrusion extends around the axis of rotation of the driving member 30, and the protrusion height gradually increases. As the driving member 30 rotates, the first end of the frame locking member 41 abuts against different protrusion positions of the first arc-shaped protrusion, so that the frame locking member 41 moves back and forth.

[0110] In other embodiments, the drive unit of the drive unit 30 may be configured in other ways.

[0111] In one embodiment, wheel locking member 51 is slidably mounted on the horizontal frame 11, and frame locking member 41 is slidably mounted on the vertical frame 12. When the user-controlled drive member 30 reciprocates between a first position and a second position, wheel locking member 51 reciprocates on the horizontal frame 11 to lock or unlock the rotating wheel 20, and frame locking member 41 reciprocates on the vertical frame 12 to lock or unlock the wheel frame 10 to the device body 200.

[0112] During the rotation of the drive component 30, if the wheel locking component 51 or the frame locking component 41 swings, a large clearance space needs to be reserved in advance, and the locking components occupy a large space during movement. In this embodiment, however, during the rotation of the drive component 30, the wheel locking component 51 and the frame locking component 41 slide on the wheel frame 10, reducing the space occupied during movement and making the rotating wheel mechanism 100 more compact. Furthermore, compared to the rotating installation method, the sliding installation method is more reliable, ensuring smooth movement of the locking components and reducing the likelihood of malfunctions.

[0113] In other embodiments, the rotating wheel mechanism 100 may also be configured such that, in response to the rotation of the drive member 30 between a first position and a second position, the second end of the wheel locking member 51 and the second end of the frame locking member 41 swing, so that the second end of the wheel locking member 51 engages or disengages from the rotating wheel 20, and the second end of the frame locking member 41 engages or disengages from the rotating wheel 20.

[0114] In one embodiment, the main body of the drive member 30 is disposed inside the wheel frame 10. The position where the drive member 30 is rotatably connected to the wheel frame 10 is located inside the wheel frame 10, which can effectively prevent dust, reduce wear at the connection position between the drive member 30 and the wheel frame 10, and avoid jamming at this position, thereby improving the smoothness and reliability of the drive member 30 control and extending the service life of the drive member 30. The position where the drive member 30 is rotatably connected to the wheel frame 10 is not visible from the outside of the rotating wheel mechanism 100.

[0115] Referring to Figures 1, 4, 10, and 14, optionally, the drive unit 30 includes a rotating part 31 and a pedal part 32. The rotating part 31 is the main body of the drive unit 30, and is used to rotatably connect with the wheel frame 10. The rotating part 31 is also used to cooperate with the wheel locking member 51. The first drive part 33 and the second drive part 34 are also disposed on the rotating part 31. The pedal part 32 is used to raise the force application position so that the user can control the pedal part 32 with their foot, thereby controlling the entire drive unit 30.

[0116] Optionally, referring to Figures 10 and 11, the stepping part 32 protrudes radially from the outer peripheral surface of the rotating part 31. Optionally, referring to Figures 10 and 11, the rotating part 31 is cylindrical, and the stepping part 32 is plate-shaped. Exemplarily, the cylindrical rotating part 31 has second driving parts 34 at its left and right ends, and a first driving part 33 on its outer periphery.

[0117] The wheel frame 10 includes a horizontal frame 11 and a vertical frame 12. The horizontal frame 11 has an internal mounting groove 1103. A rotating part 31 is disposed within the mounting groove 1103 and rotatably connected to the wheel frame 10. For example, the left and right ends of the rotating part 31 are rotatably mounted to the left and right walls of the mounting groove 1103, respectively. Rotating wheels 20 are provided on both the left and right sides of the rotating part 31. Wheel locking members 51 are provided between the rotating part 31 and the left rotating wheel 20, and between the rotating part 31 and the right rotating wheel 20. A second driving surface 341 is provided on the left and right end faces of the rotating part 31, and each of the left and right second driving surfaces 341 abuts against the wheel locking members 51 on the left and right sides. By inserting the rotating part 31 into the internal mounting groove 1103 of the wheel frame 10, the connection point between the rotating part 31 and the driving member 30 is located inside the wheel frame 10, making it less prone to damage. The driving member 30 rotates smoothly and reliably, thereby ensuring reliable braking function.

[0118] Optionally, the crossbar 11 is also provided with a clearance slot 1104 communicating with the mounting groove 1103. The rotating part 31 is disposed in the mounting groove 1103 and rotatably connected to the wheel frame 10. The pedal part 32 extends out of the wheel frame 10 through the clearance slot 1104. This allows a portion of the drive member 30 to protrude from the wheel frame 10, providing a position for the user's foot to apply external force, facilitating the user to control the position of the drive member 30 by stepping on it or lightly lifting it. It is understood that the clearance slot 1104 also provides clearance for the movement of the pedal part 32.

[0119] In one embodiment, the frame locking member 41 is disposed inside the vertical frame 12, which can effectively prevent dust and protect the frame locking member 41, reduce wear and foreign matter entanglement, make the movement of the frame locking member 41 reliable, and prevent the frame locking member 41 from jamming and causing the control failure of the wheel frame 10.

[0120] Optionally, the vertical frame 12 is provided with a first guide groove 1101 inside. The first guide groove 1101 is a through hole that passes through both ends. One end of the first guide groove 1101 is connected to the mounting groove 1103, and the other end is connected to the outside of the vertical frame 12. The frame locking member 41 is slidably installed in the first guide groove 1101. The bottom of the first guide groove 1101 has a bottom side opening, and the top has a top side opening. The first end of the frame locking member 41 can cooperate with the first drive part 33 on the rotating part 31 located in the mounting groove 1103 through the bottom side opening. The second end of the frame locking member 41 can extend out of the first guide groove 1101 and the vertical frame 12 through the top side opening to engage with the frame locking groove 2001 of the equipment body 200.

[0121] In one embodiment, the wheel locking member 51 is disposed inside the crossbeam 11, which can effectively prevent dust and protect the wheel locking member 51, reduce wear and foreign matter entanglement, make the movement of the wheel locking member 51 reliable, and prevent the wheel locking member 51 from jamming and causing control failure of the rotating wheel 20.

[0122] Optionally, a second guide groove 1102 is provided inside the cross frame 11. The second guide groove 1102 is a through hole with both ends connected, so that two ends of the second guide groove 1102 are connected to the mounting groove 1103, and the other two ends are connected to the outside of the cross frame 11. The frame locking member 41 is slidably installed in the first guide groove 1101. The first guide groove 1101 has an inner opening on the inner side and an outer opening on the outer side. The first end of the wheel locking member 51 can cooperate with the second drive part 34 on the rotating part 31 located in the mounting groove 1103 through the inner opening. The second end of the wheel locking member 51 can extend out of the second guide groove 1102 and out of the cross frame 11 through the outer opening to engage with the wheel locking groove 201 inside the rotating wheel 20 to restrict the rotation of the rotating wheel 20. Optionally, the second reset member 52 is an elastic member and is provided in the second guide groove 1102.

[0123] Optionally, the second guide groove 1102 includes a small hole section and a large hole section. The large hole section is located on the side of the small hole section closer to the drive member 30. The wheel locking member 51 is a brake lever, which passes through both the small hole section and the large hole section. The second reset member 52 is a spring sleeved on the brake lever and located within the large hole section. Placing the second reset member 52 within the guide hole provides greater stability. Positioning the second reset member 52 closer to the drive member 30 increases the distance between the second reset member 52 and the drive member 30, allowing the brake lever to better respond to the reset force of the second reset member 52 and maintain its position against the second drive part 34 of the drive member 30.

[0124] In one embodiment, the horizontal frame 11 includes a first frame portion 111 and a second frame portion 112, and the vertical frame 12 includes a third frame portion 121 and a fourth frame portion 122. The first frame portion 111 and the second frame portion 112 are connected by fasteners, snap-fit ​​mechanisms, or similar means. The third frame portion 121 and the fourth frame portion 122 are also connected by fasteners, snap-fit ​​mechanisms, or similar means.

[0125] Optionally, a first groove is provided on the side of the first frame 111 near the second frame 112, and a second groove is provided on the side of the second frame 112 near the first frame 111. The rotating part 31 of the drive member 30 is rotatably disposed between the first frame 111 and the second frame 112, and the first groove and the second groove together form the aforementioned mounting groove 1103. Compared to solutions that only provide mounting slots 1103 in the first frame portion 111 or only in the second frame portion 112, this embodiment provides slots in both the first frame portion 111 and the second frame portion 112 to enclose and form mounting slots 1103. When the mounting slots 1103 are the same size, the rotating part 31 of the driving member 30 can be rotatably installed in the mounting slot 1103 of the cross frame 11 by clamping the rotating part 31 of the driving member 30 between the first frame portion 111 and the second frame portion 112. Furthermore, the stepping part 32 of the driving member 30 can extend out of the cross frame 11 from the clearance slot 1104. The assembly is simple and the structure is simple.

[0126] Optionally, referring to Figures 7 and 8, a connecting shaft is provided between the rotating wheel 20 and the crossbeam 11. The connecting shaft includes a first shaft portion 61 and a second shaft portion 62. A first mounting groove 11051 is provided on the side of the first frame portion 111 near the second frame portion 112, and a second mounting groove 11052 is provided on the side of the second frame portion 112 near the first frame portion 111. Part of the first shaft portion 61 is inserted into the first mounting groove 11051, and the other part is inserted into the second mounting groove. The first shaft portion 61 is connected and fixed to the first frame portion 111 or the second frame portion 112 by means of fasteners, snap-fit, etc., so as to realize the connection and fixation of the connecting shaft to the crossbeam 11 of the wheel frame 10. The second shaft portion 62 is rotatably connected to the rotating wheel 20.

[0127] Optionally, referring to Figures 7 and 10, the first frame portion 111 is located above the second frame portion 112. The second guide groove 1102 is provided in the second frame portion 112. It is understood that when the first frame portion 111 and the second frame portion 112 are provided with the first mounting groove 11051 and the second mounting groove 11052, providing the second guide groove 1102 only in the second frame portion 112 allows the second guide groove 1102 and the second mounting groove 11052 to avoid each other and not interfere with each other; furthermore, the second guide groove 1102 can be set at a certain distance offset from the rotation axis of the drive member 30, thereby causing the wheel locking member 51 to be set at a certain distance offset from the rotation axis of the drive member 30. This allows the eccentrically positioned second drive portion 34 to cooperate with the eccentrically positioned wheel locking member 51. Here, "eccentrically positioned" refers to being set at a certain distance offset from the rotation axis of the drive member 30. In this way, during the rotation of the drive member 30, the second drive surface 341 extending around the central axis of the drive member 30 abuts against the wheel locking member 51 at different positions to adjust the left and right positions of the wheel locking member 51.

[0128] Optionally, the bottom end of the third frame 121 is connected to the first frame 111, the fourth frame 122 is disposed on the front or rear side of the third frame 121, the fourth frame 122 is connected to the third frame 121, and the first guide groove 1101 is disposed between the third frame 121 and the fourth frame 122.

[0129] Optionally, the first frame 111 and the third frame 121 are integrally formed as one piece, so that the wheel frame 10 includes three main component parts: the integral part of the first frame 111 and the third frame 121, the second frame 112, and the third frame 121.

[0130] In other embodiments, the horizontal frame 11 may also be a single piece, that is, not divided into a first frame portion 111 and a second frame portion 112. The vertical frame 12 may also be a single piece, that is, not divided into a third frame portion 121 and a fourth frame portion 122.

[0131] In one embodiment, referring to Figures 3 to 7 and Figure 10, the following provides a method for configuring the frame locking member 41:

[0132] The locking member 41 includes a first locking member 411 and a second locking member 412, which are connected by a transmission. The end of the first locking member 411 facing away from the second locking member 412 abuts against the first driving part 33 of the driving member 30. Specifically, the first end of the locking member 41 is located at the end of the first locking member 411 facing away from the second locking member 412, and the second end of the locking member 41 is located at the end of the second locking member 412 facing away from the first locking member 411. The frame locking member 41 is configured such that, during the movement of the drive member 30 from the first position to the second position, the first drive part 33 of the drive member 30 can drive the first locking member 411 to move along a first direction (z1 in Figures 1, 3, 6, and 7 indicates the first direction), and the first locking member 411 can drive the second locking member 412 to move along a second direction (z2 in Figures 1, 3, 6, and 7 indicates the second direction), so that the second locking member 412 disengages from the frame locking hole of the equipment body 200, thereby separating the first pin part 4101 at the second end of the frame locking member 41 from the equipment body 200. The second direction is opposite to the first direction.

[0133] Taking the first direction as upward and the second direction as downward as an example, when the drive component 30 is configured to rotate downward from the first position to the second position under the action of external force, the user will step down on the drive component 30 to brake the rotating wheel 20 and unlock the wheel frame 10 so that it can be opened. For the user, stepping down on the drive component 30 to brake the wheel is more in line with daily usage habits. On the other hand, the action of stepping down on the drive component 30 with the sole of the foot is more comfortable than the action of hooking the drive component 30 upward with the toes. This makes the braking control of the rotating wheel 20 more comfortable, convenient and reliable. Based on the importance of the braking control experience of the rotating wheel 20, while the user steps down on the drive component 30, although the first drive part 33 of the drive component 30 will push the first locking member 411 upward, through transmission cooperation, it will drive the second locking member 412 to retract downward. This allows the second locking member 412 to disengage downward from the downward-facing slot 2001 of the device body 200, thereby unlocking the wheel frame 10. Therefore, this embodiment uses a first locking member 411 and a second locking member 412 that can move in opposite directions in the frame locking member 41 to both ensure the braking experience of the rotating wheel 20 and simultaneously unlock and open the wheel frame 10 while controlling the braking of the rotating wheel 20.

[0134] In this embodiment, when the drive member 30 is in the first position, the first drive surface 331 is configured such that point A of the first drive surface 331 abuts against the first locking member 411, and the distance between point A and the ground is H1; when the drive member 30 is in the second position, point B of the first drive surface 331 abuts against the first locking member 411, and the distance between point B and the ground is H2; H2 is greater than H1. Therefore, as the drive member 30 rotates downward from the first position to the second position, the contact point between the first drive surface 331 and the first locking member 411 gradually approaches the highest point of the first drive surface, and the first drive surface 331 gradually pushes the first locking member 411 upward, while the second locking member 412 is gradually pulled downward, thereby unlocking the wheel frame 10.

[0135] It is understandable that, in terms of structural design, compared to the scheme where "during the process of the drive member 30 being stepped down to move from the first position to the second position, the first drive surface 331 can lower the frame locking member 41 (as shown in Figure 19, the solid line indicates the state of the drive member 30 in the first position, and the dashed line indicates the state of the drive member 30 in the second position)," the design of the shape of the first drive surface 331 is more demanding. In this embodiment, the scheme where "during the process of the drive member 30 being stepped down, the first drive surface 331 pushes the first locking member 411 upward" makes it easier to design the shape of the first drive surface 331 reasonably (as shown in Figures 3 and 4). The shape design of the first drive surface 331 is more reasonable, and the drive member 30 does not need to rotate too much to complete the stroke required for the second end of the frame locking member 41 to move when the second end of the frame locking member 41 unlocks the wheel frame 10. Of course, in other embodiments, the driving member 30 and the first driving surface 311 shown in FIG19 can also be used, and the frame locking member 41 has only one component. When the driving member 30 is in the first position, the frame locking member 41 is in a higher position, and the second end of the top of the frame locking member 41 is inserted into the frame locking groove 2001. When the driving member 30 is in the second position, the frame locking member 41 is in a lower position, and the second end of the top of the frame locking member 41 is disengaged from the frame locking groove 2001.

[0136] Optionally, when the frame locking member 41 includes a first locking member 411 and a second locking member 412, as shown in FIG6, a first reset member 42 is provided between the first locking member 411 and the wheel frame 10. The first reset member 42 has a tendency to move away from the first locking member 411. For example, in FIG6, the first reset member 42 provides a force in the Z2 direction to the first locking member 411. In this way, during the process of the drive member 30 returning from the second position to the first position, the first locking member 411 moves more smoothly in the Z2 direction, and the second locking member 412 moves more smoothly in the Z1 direction, so that the first pin portion 4101 at the top of the first locking member 411 can be smoothly inserted into the device body 200.

[0137] Optionally, the end of the second locking member 412 opposite to the first locking member 411 is configured as a pin, the pin being the first pin part 4101, and the pin being the second end of the locking member 41.

[0138] Optionally, to achieve reverse movement between the first locking member 411 and the second locking member 412, a transmission member 413 is provided between them. Referring to Figure 6, the first locking member 411 is provided with a first rack 414, the second locking member 412 is provided with a second rack 415, and the transmission member 413 is a gear, with both the first rack 414 and the second rack 415 meshing with the gear. Through the cooperation of the rack and gear, the first locking member 411 and the second locking member can slide in opposite directions, so that during the rotation of the drive member 30 from the first position to the second position, even when the first drive part 33 of the drive member 30 moves upward, the second end of the locking member 41 can move downward, thereby unlocking the wheel frame 10. It can be understood that during the entire control process, the first locking member 411 and the second locking member 412 slide vertically on the vertical frame 12, and the sliding action is stable and reliable, making the action of the locking member 41 more reliable.

[0139] Optionally, both the first rack 414 and the second rack 415 extend in the vertical direction.

[0140] In other embodiments, when the frame locking member 41 includes a first locking member 411 and a second locking member 412, the two can also be configured such that: the first locking member 411 is slidably mounted on the vertical frame 12, and the second locking member 412 is rotatably mounted on the vertical frame 12. During the process of the drive member 30 rotating from the first position to the second position, the first locking member 411 is pushed upward by the first drive part 33, the first locking member 411 abuts against the first end of the second locking member 412, and the second locking member 412 swings as a whole, thereby allowing the second end of the second locking member 412 to disengage from the frame locking groove 2001 of the equipment body 200.

[0141] In one embodiment, the rotating wheel mechanism 100 is a double-wheel mechanism, with rotating wheels 20 provided at both ends of the wheel frame 10. When the wheel frame 10 is installed on the device body 200, the two rotating wheels 20 are spaced apart in the left-right direction, and the connecting axis of the two rotating wheels 20 extends in the left-right direction. When moving the audio-visual equipment, the two rotating wheels 20 on the left and right sides of the rotating wheel mechanism 100 rotate, making the movement of the audio-visual equipment more stable and easier. In other embodiments, the rotating wheel mechanism 100 can also be a single-wheel mechanism, with a rotating wheel 20 rotatably installed in the middle of the wheel frame 10.

[0142] In one embodiment, a ring of wheel locking grooves 201 (not shown in the figure) is provided on the side of the rotating wheel 20 near the drive member 30, surrounding the connecting axis of the rotating wheel 20. That is, there are multiple wheel locking grooves 201 on the inner side of the rotating wheel 20. It can be understood that by providing a ring of wheel locking grooves 201, the rotating wheel 20 can have a suitable wheel locking groove 201 aligned with the wheel locking member 51 at any angle. When braking is required, the second end of the wheel locking member 51 can be inserted into any wheel locking groove 201. In this way, when braking is required, it is not necessary to first adjust the angle of the rotating wheel 20 and then control the wheel locking member 51 to brake through the drive member 30, making the operation more convenient and faster, and providing a better user experience.

[0143] Of course, in other embodiments, only one to four wheel locking grooves 201 may be provided on the rotating wheel 20, and corresponding marks may be provided on the rotating wheel 20. When braking is required, the user first adjusts the angle of the rotating wheel 20 and then controls the wheel locking member 51 to brake.

[0144] In one embodiment, referring to Figures 17 and 18, the main body 200 is an audio-visual device. The main body 200 includes a housing 210, a pull rod 220, and a display device 230. The housing 210 houses a sound playback module, such as a speaker. The wheel frame 10 is rotatably connected to the housing 210 via a rotating connection 121. The pull rod 220 is connected to the housing 210. The display device 230 has a display screen and is detachably connected to the pull rod 220. When the device is in motion, the user can easily move the audio-visual device by pulling the pull rod 220, making it suitable for moving the device to a target location for application.

[0145] The audio-visual device of this embodiment has at least an audio playback function. When the user does not need to use the video playback function, the display device 230 can be removed from the lever 220 for safekeeping of the valuable display device 230. When the user needs to use the video playback function, the display device 230 can be installed back onto the lever 220. This device can be used when users want to do square dancing, or when school clubs need to perform, and is also suitable for school physical education teachers to play audio during class.

[0146] Optionally, the display device 230 can establish communication with the cabinet 210 via wired or wireless communication, and then the user can control the cabinet 210 to play suitable music. The display device 230 can serve as the audio source for the cabinet 210, or other terminals such as mobile phones can also be used as the audio source for the cabinet 210.

[0147] In one embodiment, the pull rod 220 is configured to slide on the housing 210. The pull rod 220 includes a main rod body and a grip handle. The main rod body is slidably mounted on the housing 210, and the grip handle is connected to the top of the main rod body. In a retracted state, all or at least the main rod body of the pull rod 220 is retracted inside the housing 210. In a pulled state, part or all of the main rod body of the pull rod 220 extends out of the housing 210, accommodating different user heights and providing comfortable pulling of the device. Optionally, the main rod body is provided with a display device mounting section, so that a display device 230 can be mounted on the display device mounting section of the main rod body when needed.

[0148] Referring to Figure 18, when the audio-visual equipment is in a parked state with the wheel frame 10 rotated and open, the cabinet 210 of the main body 200 of the equipment is tilted as a whole, so that the display device 230 is also tilted to a certain extent, making it easier to comfortably view the display screen 1 on the display device 230 and providing a better user experience.

[0149] In this description, it should be understood that the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings, and are only for ease of description and simplification of operation. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning. In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity, and those skilled in the art should consider the specification as a whole. The technical solutions in various embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art. The technical principles of the present invention have been described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention and should not be construed as limiting the scope of protection of the present invention in any way. Based on the explanation herein, those skilled in the art can readily conceive of other specific embodiments of the present invention without any creative effort, and these embodiments will all fall within the protection scope of the present invention.

Claims

1. A rotating wheel mechanism, characterized in that, Device body (200) for installation on a removable device; The rotating wheel mechanism (100) includes: The wheel frame (10) is provided with a rotating connection part (121); the rotating connection part (121) is used to rotately connect with the main body of the equipment (200); Rotating wheel (20) is rotatably connected to the wheel frame (10); A drive member (30) is movably connected to the wheel frame (10); the drive member (30) can move relative to the wheel frame (10) under the action of an external force to adjust between a first position and a second position; the drive member (30) is provided with a first drive part (33); A frame locking member (41) is movably connected to the wheel frame (10). The frame locking member (41) has a first locked state and a first unlocked state. The first end of the frame locking member (41) is disposed on the first drive part (33). When the drive member (30) is in the first position, the frame locking member (41) is in the first locking state, and the second end of the frame locking member (41) is engaged with the equipment body (200) to restrict the wheel frame (10) from rotating relative to the equipment body (200); When the drive member (30) is in the second position, the frame locking member (41) is in the first unlocked state, and the second end of the frame locking member (41) can be separated from the equipment body (200) so that the wheel frame (10) can rotate relative to the equipment body (200) under the action of external force.

2. The rotating wheel mechanism according to claim 1, characterized in that, The rotating wheel mechanism (100) further includes a wheel locking member (51), which is movably connected to the wheel frame (10). The wheel locking member (51) has a second locked state and a second unlocked state. The driving member (30) is provided with a second driving part (34), and the first end of the wheel locking member (51) is provided on the second driving part (34); When the drive member (30) is in the first position, the wheel locking member (51) is in the second unlocked state, the wheel locking member (51) is separated from the rotating wheel (20), and the rotating wheel (20) can rotate relative to the wheel frame (10) under the action of external force; When the drive member (30) is in the second position, the wheel locking member (51) is in the second locking state, the wheel locking member (51) is engaged with the rotating wheel (20), and the wheel locking member (51) restricts the rotating wheel (20) from rotating relative to the wheel frame (10).

3. The rotating wheel mechanism according to claim 2, characterized in that, The first end of the wheel locking member (51) abuts against the second driving part (34); the second driving part (34) is used to drive the second end of the wheel locking member (51) to engage with the rotating wheel (20) during the movement of the driving member (30) from the first position to the second position, thereby restricting the rotation of the rotating wheel (20) relative to the wheel frame (10). A second reset member (52) is provided between the wheel locking member (51) and the wheel frame (10). The second reset member (52) is used to drive the second end of the wheel locking member (51) to disengage from the rotating wheel (20) during the process of the driving member (30) moving from the second position to the first position, so that the rotating wheel (20) can rotate relative to the wheel frame (10).

4. The rotating wheel mechanism according to claim 2, characterized in that, The drive member (30) is rotatably connected to the wheel frame (10). The drive member (30) can rotate downward to rotate from the first position to the second position, and the drive member (30) can rotate upward to rotate from the second position to the first position.

5. The rotating wheel mechanism according to any one of claims 2 to 4, characterized in that, The wheel frame (10) includes a horizontal frame (11) and a vertical frame (12). The rotating wheel (20) is rotatably mounted on the horizontal frame (11). The first end of the vertical frame (12) is connected to the horizontal frame (11), and the rotating connecting part (121) is disposed at the second end of the vertical frame (12). The vertical frame (12) is used to be rotatably mounted on the main body (200) of the equipment via the rotating connecting part (121).

6. The rotating wheel mechanism according to claim 5, characterized in that, The drive member (30) is rotatably connected to the cross frame (11), and the drive member (30) can rotate relative to the cross frame (11) about a rotation axis extending in the left and right direction; The first driving part (33) is disposed on the outer periphery of the driving member (30), and the first driving part (33) has a first driving surface (331) on the side near the vertical frame (12), and the first end of the frame locking member (41) abuts against the first driving surface (331); And / or, the second drive part (34) is provided with a second drive surface (341) on the side facing the rotating wheel (20), and the first end of the wheel locking member (51) abuts against the second drive surface (341).

7. The rotating wheel mechanism according to claim 5, characterized in that, The wheel locking member (51) is slidably mounted on the cross frame (11), and the frame locking member (41) is slidably mounted on the vertical frame (12).

8. The rotating wheel mechanism according to claim 5, characterized in that, The cross frame (11) is provided with an installation groove (1103) inside, and the cross frame (11) is also provided with a clearance slot (1104) communicating with the installation groove (1103); the driving member (30) includes a rotating part (31) and a stepping part (32), the rotating part (31) is disposed in the installation groove (1103) and rotatably connected to the wheel frame (10), and the stepping part (32) extends out of the wheel frame (10) from the clearance slot (1104); And / or, the interior of the vertical frame (12) is provided with a first guide groove (1101), and the frame locking member (41) is slidably installed in the first guide groove (1101); And / or, the crossbar (11) is provided with a second guide groove (1102) inside, and the wheel locking member (51) is slidably installed in the second guide groove (1102).

9. The rotating wheel mechanism according to claim 8, characterized in that, The cross frame (11) includes a first frame part (111) and a second frame part (112), the mounting groove (1103) is disposed between the first frame part (111) and the second frame part (112), and the rotating part (31) of the driving member (30) is rotatably mounted between the first frame part (111) and the second frame part (112); The second guide groove (1102) is provided in the second frame part (112), and the wheel locking member (51) is slidably installed in the second guide groove (1102) of the second frame part (112); The vertical frame (12) includes a third frame part (121) and a fourth frame part (122). The end of the third frame part (121) is connected to the first frame part (111). The fourth frame part (122) is disposed on the front or rear side of the third frame part (121) and is connected to the third frame part (121). The first guide groove (1101) is disposed between the third frame part (121) and the fourth frame part (122).

10. The rotating wheel mechanism according to any one of claims 1 to 4, characterized in that, The frame locking member (41) includes a first locking member (411) and a second locking member (412). The first locking member (411) and the second locking member (412) are connected in a transmission manner. The end of the first locking member (411) away from the second locking member (412) is the first end of the frame locking member (41). The first end of the frame locking member (41) abuts against the first driving part (33) of the driving member (30). The end of the second locking member (412) away from the first locking member (411) is the second end of the frame locking member (41).

11. The rotating wheel mechanism according to claim 10, characterized in that, The frame locking member (41) is configured such that, during the movement of the drive member (30) from the first position to the second position, the first drive unit (33) can drive the first locking member (411) to move along a first direction, and the first locking member (411) can drive the second locking member (412) to move along a second direction, so that the second locking member (412) disengages from the frame locking hole of the equipment body (200), thereby separating the frame locking member (41) from the equipment body (200), wherein the second direction is opposite to the first direction.

12. The rotating wheel mechanism according to claim 11, characterized in that, A transmission member (413) is provided between the first locking member (41) and the second locking member (41); The first locking member (411) is provided with a first rack (414), the second locking member (412) is provided with a second rack (415), the transmission member (413) is a gear, and both the first rack (414) and the second rack (415) mesh with the gear.

13. The rotating wheel mechanism according to claim 10, characterized in that, The first end of the frame locking member (41) abuts against the first driving part (33), and the first driving part (33) is used to drive the second end of the frame locking member (41) to disengage from the equipment body (200) during the process of the driving member (30) moving from the first position to the second position. A first reset member (42) is provided between the first locking member (411) and the wheel frame (10), and the first reset member (42) and the first locking member (411) have a tendency to move away from the second locking member (412).

14. A mobile device, characterized in that, include: Equipment body (200); The rotating wheel mechanism (100) as described in any one of claims 1 to 13, wherein the wheel frame (10) is rotatably connected to the main body of the equipment (200) via the rotating connection portion (121); When the drive member (30) is located in the second position and the frame locking member (41) is in the first unlocked state, the wheel frame (10) rotates relative to the main body (200) under the action of external force to open the wheel frame (10).

15. The mobile device according to claim 14, characterized in that, The mobile device has a moving state and a parked state; When the mobile device is in the motion state, the drive unit (30) is in the first position, and the wheel frame (10) abuts against the device body (200); When the mobile device is in the parked state, the drive unit (30) is in the second position, and the wheel frame (10) is tilted relative to the main body (200).

16. The mobile device according to claim 14, characterized in that, The main body (200) of the equipment is provided with a frame receiving groove (2002). When the wheel frame (10) is in the moving state, the wheel frame (10) is embedded in the frame receiving groove (2002). The wall of the rack receiving groove (2002) is provided with a rack locking groove (2001), and the second end of the rack locking member (41) is inserted into the rack locking groove (2001).

17. The mobile device according to claim 14, characterized in that, The bottom of the main body (200) of the equipment is provided with support feet (300).

18. The mobile device according to any one of claims 12 to 17, characterized in that, The main body (200) of the device is an audio-visual device. The main body (200) includes a cabinet (210), a pull rod (220), a display device (230), and the wheel frame (10) is rotatably connected to the cabinet (210) through the rotating connection part (121). The pull rod (220) is connected to the cabinet (210), and the display device (230) is connectable to the pull rod (220).

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