A portable sign

Abstract

This disclosure provides a conveniently movable signboard, comprising: a base for supporting the signboard; a signboard panel fixedly mounted on the base; multiple sets of casters mounted on the bottom of the base; a steering damping device connected to the casters; and an adjustment knob connected to the steering damping device. The steering damping device includes: a damping pad fitted onto the steering shaft end of the casters to increase frictional resistance; a spring, one end fixed to the damping pad; and an adjusting screw threaded onto the base and connected to the other end of the spring for adjusting the spring's preload by rotation. This disclosure provides a solution for improving mobility stability.

Description

Technical Field

[0001] This application relates to portable signage, specifically to a sign that is easy to move. Background Technology

[0002] A type of portable sign is typically used for temporary events or construction sites. It is easy to transport via wheels or a foldable design. However, it suffers from insufficient stability during movement, making it prone to tipping over or wobbling, which affects its effectiveness. Summary of the Invention

[0003] In view of this, the present disclosure provides a conveniently movable sign that at least partially solves the problems existing in the prior art.

[0004] This application provides a portable signboard, comprising:

[0005] A base for supporting the sign;

[0006] The sign panel is fixedly installed on the base;

[0007] Multiple sets of omnidirectional wheels are installed at the bottom of the base;

[0008] A steering damping device is connected to the swivel wheel;

[0009] The adjustment knob is connected to the steering damping device;

[0010] The steering damping device includes:

[0011] A damping pad is fitted onto the end of the steering shaft of the omnidirectional wheel to increase frictional resistance;

[0012] One end of the spring is fixed to the damping pad;

[0013] An adjusting screw, threaded onto the base and connected to the other end of the spring, is used to adjust the preload of the spring by rotation.

[0014] According to one embodiment, the base is a rectangular frame structure with internal weight blocks to enhance overall stability.

[0015] According to one embodiment, the bottom of the base is provided with multiple sets of mounting seats for fixing the casters.

[0016] According to one embodiment, the multiple sets of casters include four sets of casters, which are respectively installed at the four corners of the rectangular frame structure at the bottom of the base.

[0017] According to one embodiment, each set of casters further includes a wheel and a steering bracket mounted on the outside of the wheel, the wheel being rotatably connected to the steering bracket via a steering shaft.

[0018] According to one embodiment, one end of the spring is fixed to the damping pad by a first connecting ring, and the other end is fixed to the adjusting screw by a second connecting ring.

[0019] According to one embodiment, the adjusting screw includes a threaded rod and an operating head, the threaded rod passing through a threaded hole in the base, and the operating head being located at the other end of the screw away from the spring.

[0020] According to one embodiment, the adjustment knob is connected to the operating head of the adjustment screw for manual rotation.

[0021] According to one embodiment, a locking nut is also included, which is disposed on the adjusting screw for fixing the position of the adjusting screw.

[0022] This disclosure provides a conveniently movable signboard, comprising: a base for supporting the signboard; a signboard panel fixedly mounted on the base; multiple sets of casters mounted on the bottom of the base; a steering damping device connected to the casters; and an adjustment knob connected to the steering damping device. The steering damping device includes: a damping pad fitted onto the steering shaft end of the casters to increase frictional resistance; a spring, one end fixed to the damping pad; and an adjusting screw threaded onto the base and connected to the other end of the spring for adjusting the spring's preload by rotation. This disclosure provides a solution for improving mobility stability. Attached Figure Description

[0023] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the various drawings denote the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings depict only some embodiments disclosed in this application and should not be construed as limiting the scope of this application.

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0026] Figure 3 for Figure 1 Enlarged structural diagram of region A in the middle;

[0027] Figure 4 for Figure 2 A magnified structural diagram of region B in the diagram.

[0028] In the diagram: 1. Base; 2. Signboard panel; 3. Casters; 4. Steering damping device; 5. Adjustment knob; 6. Weight; 7. Mounting base; 8. First connecting ring; 9. Second connecting ring; 11. Threaded rod; 12. Operating head; 13. Locking nut; 31. Steering shaft; 32. Wheel; 33. Steering bracket; 41. Damping pad; 42. Spring; 43. Adjusting screw Detailed Implementation

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] like Figure 1 and Figure 3 As shown, a movable signboard according to this application includes a base 1, a signboard panel 2, multiple sets of casters 3, a steering damping device 4, and an adjustment knob 5.

[0031] The base 1, located at the bottom of the signboard, provides overall support and stability. This base 1 is typically made of metal or high-strength plastic, forming a plate-like or frame structure with mounting holes for securing other components. Technically, the base 1 can be achieved through welding or bolting to ensure rigidity when supporting the signboard panel 2 and the casters 3. A rectangular steel plate design with a thickness of 5-10mm can be used to adapt to load requirements in different environments.

[0032] The sign panel 2 is fixedly mounted on the top surface of the base 1 to display information or indicate content. This panel is typically a flat structure made of acrylic, metal, or composite materials, and is securely connected to the base 1 by screws, clips, or adhesives. Technically, the panel can be designed to be replaceable, for example, using pre-printed acrylic sheets bolted to pre-drilled slots in the base 1, allowing users to update the displayed content as needed while ensuring the overall structural integrity.

[0033] Multiple sets of casters 3 are installed at the four bottom corners of the base 1 to enable flexible movement of the signage. Each caster 3 includes a wheel body and a steering axle 31, and is hinged to the base 1 via bearings or connectors, allowing for 360-degree free rotation. For example, technically, the casters 3 can use standard commercial components, such as nylon wheels or rubber wheels, and are fixed in the mounting holes of the base 1 by bolts or welding, ensuring smooth rolling on smooth or rough surfaces and improving ease of movement.

[0034] Steering damping device 4 is connected to steering shaft 31 of swivel wheel 3 (see details). Figure 4 A damping pad 41, spring 42, and adjusting screw 43 are used to provide adjustable steering damping. The damping pad 41, typically made of rubber or friction material, is fitted onto the end of the steering shaft 31 and secured by an interference fit or retaining ring to increase frictional resistance during steering. One end of the spring 42 is fixed to the damping pad 41, and the other end is connected to the adjusting screw 43. This spring 42 is either a compression spring or a torsion spring, applying preload between the damping pad 41 and the adjusting screw 43. The adjusting screw 43 is threaded onto the base 1 and its compression can be adjusted by rotation. Technically, for example, the damping pad 41 can be a silicone sleeve fitted onto the end of the steering shaft 31, the spring 42 can be made of stainless steel wire, and the adjusting screw 43 can be a threaded metal bolt installed through a threaded hole in the base 1, ensuring linear adjustment of the damping force.

[0035] The adjusting knob 5 is connected to the adjusting screw 43 of the steering damping device 4 for manual operation to adjust the damping intensity. This knob is typically located on the side or outside of the base 1 and is directly fixed to the head of the adjusting screw 43 via a keyway, thread, or snap-fit, facilitating user rotation. For example, technically, the knob can be made of plastic or metal and designed as a rotary handle, coupled to the adjusting screw 43 via a screw, so that rotating the knob causes the adjusting screw 43 to screw in or out, thereby changing the preload of the spring 42 and achieving real-time adjustment of the damping.

[0036] The features of this sign effectively solve the technical problem of improving movement stability. Specifically, during movement, the arbitrary turning of the casters 3 may cause the sign to lose directional control or wobble, reducing stability. The adjustable damping force provided by the steering damping device 4 increases the frictional resistance of the steering shaft 31 when the user pushes the sign. The preload of the spring 42, controlled by the adjusting screw 43, suppresses excessive free rotation of the casters 3, thus ensuring stable and controllable movement. For example, on a smooth surface, the user can increase the damping intensity by adjusting the knob 5, making the casters 3 turn more slowly and preventing the sign from suddenly shifting under pressure; on a rough surface, appropriately reducing the damping maintains flexibility. This adjustable damping mechanism not only balances ease of movement with stability but also absorbs vibrations through the synergistic effect of the spring 42 and the damping pad 41, preventing the sign panel 2 from wobbling, thus improving overall stability and positioning accuracy during movement.

[0037] like Figure 2 As shown, in one embodiment, the base 1 is a rectangular frame structure composed of multiple interconnected borders forming a rectangular outer contour, thus providing a robust support foundation. Specifically, the frame structure includes horizontal and vertical borders, which are connected by welding or bolting to ensure overall rigidity and load-bearing capacity. A weight block 6 is disposed within the internal space of the frame, embedded in the frame cavity to directly increase the weight distribution of the base 1. The weight block 6 is made of a high-density material, such as metal or concrete, its dimensions matching the frame cavity, and is connected to the inner wall of the frame by fastening devices such as bolts or snap-fit ​​structures to prevent movement or loosening. With this arrangement, the weight block 6 is located in the central area of ​​the base 1, evenly distributing weight to optimize stability.

[0038] Specifically, the base 1 adopts a rectangular steel frame, which is welded from four angle steel frames to form a rectangular cavity; inside is a weight block 6, which is a cast iron block. The cast iron block is embedded in the center of the frame cavity and fixed to the inner wall of the frame with bolts, thereby ensuring that the weight block 6 is tightly connected to the frame.

[0039] like Figure 4 As shown, in one embodiment, the base 1 has multiple sets of mounting seats 7 at its bottom. These mounting seats 7 are specifically designed to secure the casters 3, thereby enhancing the stability and mobility of the sign. The mounting seats 7 are directly disposed on the lower surface of the base 1, forming a support structure to ensure that the casters 3 remain firmly connected when bearing load. The multiple sets of mounting seats 7 correspond to multiple sets of casters 3, and each set of mounting seats 7 is independently configured to evenly distribute the load and adapt to different ground conditions.

[0040] Specifically, the mounting base 7 includes fixed interfaces, such as holes or slots, designed to mate with the mounting components of the caster wheel 3. The mounting base 7 is connected to the bottom of the base 1 by welding, bolting, or integral molding, forming a rigid connection. This arrangement allows the caster wheel 3 to remain stable during movement, preventing loosening or displacement, while also facilitating installation and maintenance.

[0041] like Figure 1 and Figure 2 As shown, in one embodiment, the base 1 of the sign is designed as a rectangular frame structure with multiple sets of casters 3 at its bottom for mobility. Specifically, there are four sets of casters 3, which are installed at the four corners of the rectangular frame. This arrangement, through symmetrical distribution, enhances the overall stability of the sign and ensures even load distribution during movement. The base 1 adopts a rectangular frame design, with pre-reserved installation interfaces in its corner areas via welding or bolting for precise fixing of the casters 3. During installation, each caster 3 is directly connected to the frame of the base 1 via its steering shaft 31, forming a reliable support point. Furthermore, the installation position of the casters 3 is aligned with the geometric center of the base 1, avoiding the risk of offset during movement and simplifying the overall assembly process.

[0042] Specifically, the casters 3 are installed at the four corners of the rectangular frame of the base 1 by bolt fixing. For example, each caster 3 has a pre-drilled threaded hole on its base. After aligning with the corresponding hole on the frame of the base 1, bolts are used to tighten it, ensuring a stable connection and allowing for disassembly and maintenance.

[0043] like Figure 4 As shown, in one embodiment, each set of casters 3 further includes a wheel 32 and a steering bracket 33. The steering bracket 33 is fixedly mounted on the outer side of the wheel 32 to provide support and guidance. Specifically, the wheel 32 is rotatably connected to the steering bracket 33 via a steering shaft 31. This connection allows the wheel 32 to rotate freely within the steering bracket 33, thereby enabling multi-directional movement. The steering shaft 31 ensures smooth and stable relative movement between the wheel 32 and the bracket, preventing jamming during movement.

[0044] For example, the steering bracket 33 can adopt a U-shaped frame design, with its two side arms wrapping around the outside of the wheel 32, and the wheel 32 being pivotally connected to the inside of the bracket through the central hole of the wheel 32 via the steering shaft 31. Specifically, the two ends of the steering shaft 31 are fixed to the bracket arms, allowing the wheel 32 to rotate around the axis and achieve flexible steering operation.

[0045] In the steering damping device 4, the connection structure of the spring 42 employs a specific fixing mechanism to ensure reliability and adjustability. Specifically, one end of the spring 42 is securely attached to the damping pad 41 via a first connecting ring 8. The damping pad 41 is typically fitted onto the end of the steering shaft 31 of the caster wheel 3 to increase frictional resistance. The first connecting ring 8 is mechanically fixed to the surface of the damping pad 41 by means such as welding or bolting, thereby providing a stable anchor point and preventing the spring 42 from directly contacting the damping pad 41, which could lead to wear or loosening. This connection method allows the spring 42 to follow the movement of the damping pad 41 as it moves, while maintaining the efficiency of preload transmission.

[0046] like Figure 4 As shown, in one embodiment, the other end of the spring 42 is fixed to the adjusting screw 43 via a second connecting ring 9. The adjusting screw 43 is threaded into a corresponding hole in the base 1 to adjust the preload of the spring 42. The second connecting ring 9 can be designed as a ring or hook structure, and is fixedly connected to the end of the adjusting screw 43 through a threaded hole or groove, ensuring that the tension of the spring 42 changes uniformly when the adjusting screw 43 is rotated. This double connecting ring design simplifies the installation process, reduces assembly complexity, and improves the durability of the entire steering damping device 4. Overall, this structure optimizes the fixing method of the spring 42, making it more reliable under dynamic loads.

[0047] Specifically, the spring 42 is fixed to the damping pad 41 via the first connecting ring 8. For example, the first connecting ring 8 is welded to a flat area of ​​the damping pad 41, and the end of the spring 42 is hooked into the ring. At the same time, the other end of the spring 42 is fixed to the adjusting screw 43 via the second connecting ring 9. Specifically, the second connecting ring 9 can be inserted into the slot at the tail of the adjusting screw 43 and fixed with a lock nut, thereby achieving smooth adjustment of the damping strength.

[0048] like Figure 3 As shown, in one embodiment, in the steering damping device 4 of the sign, the adjusting screw 43 serves as a key component for finely adjusting the preload of the spring 42. The adjusting screw 43 consists of a threaded rod 11 and an operating head 12. The threaded rod 11 is an elongated cylinder with a continuous threaded structure on its surface for precise axial movement. The operating head 12 is designed for easy manual operation, such as a round knob or a hexagonal head, to provide sufficient gripping force. This two-part structure allows the user to apply torque through the operating head 12, indirectly driving the threaded rod 11 to linear displacement.

[0049] The installation position of the threaded rod 11 is crucial; it passes through a threaded hole on the base 1, forming a tight threaded fit. This threaded hole is pre-machined within the base 1 to ensure that the threaded rod 11 can stably pass through the hole wall during rotation, thus achieving reliable axial movement. The operating head 12 is fixedly connected to the end of the threaded rod 11 and located at the other end away from the spring 42, ensuring that the adjustment of the spring 42's preload does not interfere with the spring 42's own compression state. This layout optimizes space utilization while ensuring smooth damping adjustment.

[0050] For example, firstly, stainless steel material is selected to machine a threaded rod 11, and then the operating head 12 is welded or integrally formed at its end; specifically, after the threaded rod 11 is screwed into the threaded hole of the base 1, the operating head 12 is exposed outside the base 1. When the user rotates the operating head 12, the threaded rod 11 moves along the hole axis, pushing or pulling the end of the spring 42 to change the preload.

[0051] like Figure 3 As shown, in one embodiment, the adjustment knob 5, as the core component for manually adjusting the damping strength, is directly connected to the operating head 12 of the adjusting screw 43 to enable convenient user control of the steering damping. The operating head 12 is part of the adjusting screw 43 and is typically designed with a geometry that facilitates gripping or rotation, such as a polygonal or slotted structure, thus enabling easy manual operation. The adjustment knob 5 is mechanically fixed to the operating head 12, ensuring that rotating the knob synchronously drives the rotation of the adjusting screw 43.

[0052] The adjustment knob 5 is mounted on the exterior of the sign or in an easily accessible area for user convenience. The connection involves direct coupling between the knob and the operating head 12, such as through a socket, key, or threaded engagement, to ensure efficient transmission of rotational force. This design avoids additional transmission mechanisms and simplifies the structural layout.

[0053] Specifically, the adjusting knob 5 is fixed to the operating head 12 of the adjusting screw 43 by a sleeve connection. Specifically, the operating head 12 adopts a hexagonal prism design, and the adjusting knob 5 has a corresponding hexagonal hole inside. After the knob is sleeved into the operating head 12, it is tightened by the fixing screw, thereby realizing manual rotation operation to drive the adjusting screw 43 to rotate.

[0054] like Figure 3 and Figure 4 As shown, in one embodiment, the signage is also equipped with a locking nut 13. The locking nut 13 is configured to be directly mounted on the adjusting screw 43 to secure it after the adjusting screw 43 has been positioned to prevent accidental rotation or displacement. This design ensures the reliability and durability of the damping adjustment, preventing changes in preload due to external vibrations or forces during use.

[0055] Specifically, the locking nut 13 is installed on the outer surface of the adjusting screw 43 via a threaded connection and is located between the adjusting screw 43 and the base 1 or in the area adjacent to the base 1. When the adjusting screw 43 is rotated to adjust the preload of the adjusting spring 42, the locking nut 13 can be tightened to press against the base 1 or related fixed structure, thereby forming a mechanical lock and fixing the axial and rotational position of the adjusting screw 43. This connection method is simple and effective, and convenient for user operation and maintenance.

[0056] For example, the locking nut 13 is implemented as a standard hexagonal nut, whose internal thread matches the external thread of the adjusting screw 43. For example, the user first rotates the adjusting screw 43 to set the preload of the spring 42, and then manually tightens the locking nut 13 so that its end face presses against the surface of the base 1, thereby fixing the position of the adjusting screw 43 by friction and preventing it from loosening or rotating.

[0057] In actual operation, when this device is used, the sign can be moved by pushing the sign and using the multiple sets of universal wheels 3 installed at the bottom of the base 1 to move the entire sign, thereby achieving convenient displacement. When it is necessary to adjust the steering resistance to enhance stability, the damping intensity can be manually adjusted by rotating the adjustment knob 5 connected to the steering damping device 4. Rotating the adjustment knob 5 drives the adjustment screw 43, which is threaded onto the base 1. By changing the preload of the spring 42, the frictional resistance of the damping pad 41 to the steering shaft 31 of the universal wheel 3 is adjusted, making the steering of the sign easier to control during movement.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0059] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A signboard that is easy to move, characterized by, include: A base (1) is used to support the signboard; The sign panel (2) is fixedly installed on the base (1); Multiple sets of casters (3) are installed at the bottom of the base (1); Steering damping device (4) is connected to the caster wheel (3); Adjustment knob (5) is connected to the steering damping device (4); The steering damping device (4) includes: A damping pad (41) is fitted onto the end of the steering shaft (31) of the universal wheel (3) to increase frictional resistance; A spring (42) is fixed at one end to the damping pad (41); An adjusting screw (43) is threaded onto the base (1) and connected to the other end of the spring (42) for adjusting the preload of the spring (42) by rotation.

2. A signboard according to claim 1, wherein: The base (1) is a rectangular frame structure and is equipped with a weight block (6) inside to enhance overall stability.

3. A signboard according to claim 2, wherein: The base (1) has multiple sets of mounting seats (7) at its bottom for fixing the casters (3).

4. A signboard according to claim 2, wherein: The multiple sets of casters (3) include four sets of casters (3), which are respectively installed at the four corners of the rectangular frame structure at the bottom of the base (1).

5. A portable signboard according to claim 1, characterized in that: Each set of casters (3) also includes a wheel (32) and a steering bracket (33) mounted on the outside of the wheel (32). The wheel (32) is rotatably connected to the steering bracket (33) via a steering shaft (31).

6. A portable signboard according to claim 1, characterized in that: One end of the spring (42) is fixed to the damping pad (41) by the first connecting ring (8), and the other end is fixed to the adjusting screw (43) by the second connecting ring (9).

7. A portable signboard according to claim 1, characterized in that: The adjusting screw (43) includes a threaded rod (11) and an operating head (12), the threaded rod (11) passing through a threaded hole on the base (1), and the operating head (12) being located at the other end of the screw (43) away from the spring (42).

8. A portable signboard according to claim 1, characterized in that: The adjustment knob (5) is connected to the operating head (12) of the adjustment screw (43) for manual rotation.

9. A portable signboard according to claim 1, characterized in that: It also includes a locking nut (13), which is disposed on the adjusting screw (43) and is used to fix the position of the adjusting screw (43).

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