Foot plate assembly and fan

Abstract

The application discloses a foot plate assembly and a fan. The foot plate assembly comprises a counterweight foot plate body, a bushing and a ground pipe. The counterweight foot plate body is provided with a connecting column, and the connecting column is provided with a matching structure. The bushing is sleeved on the outer periphery of the connecting column, and the bushing is provided with an elastic hook structure and a bushing connecting structure. The elastic hook structure is clamped and fixed with the matching structure. The ground pipe is provided with a ground pipe connecting structure, and the ground pipe connecting structure is fixedly connected with the bushing connecting structure. In this way, the foot plate assembly of the application is connected by setting the connecting column on the counterweight foot plate body, forming the matching structure on the connecting column, and adopting the bushing with the elastic hook structure and the bushing connecting structure for transition connection, so that the ground pipe and the counterweight foot plate body do not need to be directly and complicatedly assembled. The design significantly simplifies the overall installation process, reduces the requirement for assembly precision, and thus improves the installation efficiency.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and in particular to a foot plate assembly and a fan. Background Technology

[0002] Currently, fan base assemblies on the market generally consist of a base counterweight body and a vertical tube. Because the base counterweight body is relatively heavy and the vertical tube is also quite large, the installation structure between the vertical tube and the base counterweight body is complex, leading to complicated installation operations, low yield rates, and increased production costs. Utility Model Content

[0003] This application provides a foot plate assembly and a fan that can solve at least one of the above-mentioned technical problems.

[0004] In a first aspect, embodiments of this application provide a foot plate assembly, including:

[0005] The counterweight foot plate body is equipped with a connecting column, and the connecting column is equipped with a mating structure.

[0006] The bushing is fitted around the outer periphery of the connecting post. The bushing features a resilient hook structure and a bushing connection structure; the resilient hook structure engages and secures with the mating structure.

[0007] The ground pipe is equipped with a ground pipe connection structure, which is fixedly connected to the bushing connection structure.

[0008] In some embodiments, the elastic hook structure includes two opposing and spaced elastic hooks, the end of the connecting post is provided with a mounting hole, the mounting hole extends along the axial direction of the connecting post, the edge of the mounting hole is provided with a mating structure, the mating structure is a limiting sidewall, the limiting sidewall surrounds the edge of the mounting hole and extends radially along the mounting hole;

[0009] Both elastic hooks are located inside the mounting holes and are fastened to the limiting sidewall.

[0010] In some embodiments, each elastic hook is provided with a corresponding reinforcing rib, and each reinforcing rib is connected to the corresponding elastic hook and bushing.

[0011] In some implementations, the bushing connection structure is an external threaded connection structure, and the vertical pipe connection structure is an internal threaded connection structure, with the internal threaded connection structure and the external threaded connection structure being threadedly connected.

[0012] In some embodiments, the counterweight foot plate body includes a chassis, a top cover, and a weight block. The chassis is provided with a connecting column, the top cover is provided with a through hole, the connecting column passes through the through hole, the chassis and the top cover cooperate to form an accommodating space, and the weight block is disposed in the accommodating space.

[0013] In some implementations, there are multiple weights, which are arranged sequentially along the circumference of the connecting column.

[0014] In some embodiments, the edge of the through hole is provided with a clamping wall that surrounds the edge of the through hole and extends along the axial direction of the through hole, and one end of the vertical tube is clamped between the clamping wall and the bushing.

[0015] In some embodiments, the outer periphery of the connecting post is provided with a first anti-rotation part, and the inner periphery of the bushing is provided with a second anti-rotation part. The second anti-rotation part cooperates with the first anti-rotation part to restrict the bushing from rotating relative to the connecting post.

[0016] In some embodiments, the second anti-rotation part is provided with a process hole, and the extension direction of the process hole is consistent with the extension direction of the second anti-rotation part.

[0017] Secondly, embodiments of this application provide a fan, including:

[0018] The foot plate assembly of any of the above embodiments; and

[0019] The fan body is connected to the base plate assembly.

[0020] The foot plate assembly and fan provided in this application include a counterweight foot plate body, a bushing, and a vertical support tube. The counterweight foot plate body has a connecting post with a mating structure. The bushing is fitted around the outer periphery of the connecting post and has an elastic hook structure and a bushing connection structure; the elastic hook structure engages and fixes with the mating structure. The vertical support tube has a vertical support tube connection structure, which is fixedly connected to the bushing connection structure. Thus, the foot plate assembly of this application, by setting a connecting post on the counterweight foot plate body and forming a mating structure on the connecting post, and using a bushing with both an elastic hook structure and a bushing connection structure for transitional connection, eliminates the need for direct and complex assembly between the vertical support tube and the counterweight foot plate body. This design significantly simplifies the overall installation process, reduces the requirements for assembly precision, and thereby improves installation efficiency. Furthermore, the bushing's elastic hook structure and the mating structure on the connecting column form a stable mechanical connection, while the bushing connection structure and the vertical tube connection structure are reliably fixed. This dual connection mechanism ensures the structural stability of the entire machine during use, preventing loosening or detachment due to vibration or external forces. Moreover, the counterweight foot plate, bushing, and vertical tube adopt a separate design, allowing each to be manufactured and tested independently, facilitating modular production. If a component is damaged, only the corresponding component needs to be replaced, eliminating the need for complete scrapping, thus improving product maintainability and resource utilization. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the foot plate assembly provided in an embodiment of this application.

[0023] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the center plate assembly.

[0024] Figure 3 for Figure 1 Cross-sectional view of the center plate assembly.

[0025] Figure 4 for Figure 3 Enlarged schematic diagram of point P in the middle.

[0026] Figure 5 for Figure 2 A schematic diagram of the structure of the middle bushing.

[0027] Figure 6 for Figure 5 A structural schematic diagram of the middle bushing from another perspective.

[0028] Figure 7 for Figure 2 A schematic diagram of the mid-chassis structure.

[0029] Figure 8 for Figure 2 A schematic diagram of the structure of the top cover.

[0030] Figure 9 for Figure 2 A schematic diagram of the structure of the neutral ground pipe.

[0031] Explanation of icon numbers:

[0032] 10. Foot plate assembly; 100. Counterweight foot plate body; 110. Connecting column; 111. Mating structure; 112. Mounting hole; 113. First anti-rotation part; 120. Chassis; 130. Top cover; 131. Through hole; 132. Clamping wall; 140. Weight block; 150. Accommodation space; 200. Bushing; 210. Elastic hook structure; 211. Elastic hook; 212. Reinforcing rib; 220. Bushing connection structure; 230. Second anti-rotation part; 231. Process hole; 300. Vertical tube; 310. Vertical tube connection structure;

[0033] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0035] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0036] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] Please see Figures 1 to 4 This application provides a footplate assembly 10, which includes a counterweight footplate body 100, a bushing 200, and a vertical support tube 300. The counterweight footplate body 100 has a connecting post 110, which has a mating structure 111. The bushing 200 is sleeved on the outer periphery of the connecting post 110, and the bushing 200 has an elastic hook structure 210 and a bushing connecting structure 220. The elastic hook structure 210 engages and is fixed with the mating structure 111. The vertical support tube 300 has a vertical support tube connecting structure 310, which is fixedly connected to the bushing connecting structure 220.

[0039] Thus, the foot plate assembly 10 of this application, by setting a connecting post 110 on the counterweight foot plate body 100 and forming a mating structure 111 on the connecting post 110, and using a bushing 200 with an elastic hook structure 210 and a bushing connection structure 220 for transition connection, eliminates the need for direct and complex assembly between the riser pipe 300 and the counterweight foot plate body 100. This design significantly simplifies the overall installation process, reduces the requirements for assembly accuracy, and thus improves installation efficiency.

[0040] In addition, the elastic hook structure 210 of the bushing 200 and the mating structure 111 on the connecting column 110 form a stable mechanical connection, while the bushing connection structure 220 and the ground pipe connection structure 310 are reliably fixed. The dual connection mechanism ensures the structural stability of the whole machine during use and prevents it from loosening or falling off due to vibration or external force.

[0041] Moreover, the counterweight foot plate body 100, bushing 200 and vertical tube 300 are designed separately, and each can be manufactured and tested independently, which is conducive to modular production. If a component is damaged, only the corresponding component needs to be replaced, without the whole product being scrapped, which improves the maintainability and resource utilization of the product.

[0042] In some embodiments, the counterweight plate body 100 is made of high-density material to provide sufficient bottom counterweight and ensure the stability of the entire machine during operation. A connecting post 110 extends upward from the central region of the counterweight plate body 100, and the outer peripheral surface of the connecting post 110 is provided with a specific mating structure 111. The mating structure 111 may be an annular groove, a boss, a locking hole, or other adaptable shape, for positioning and fixing with the bushing 200.

[0043] The bushing 200 has a cylindrical structure, and its inner diameter matches the outer diameter of the connecting post 110, allowing it to be tightly fitted around the outer circumference of the connecting post 110. One end of the bushing 200 has an elastic hook structure 210, made of an elastic material, which deforms under pressure and automatically springs back after passing the limit position on the connecting post 110, thus engaging and securing with the mating structure 111. The other end of the bushing 200 has a bushing connection structure 220, which can be a threaded, snap-fit, flanged, or other mechanical connection method, used to establish a stable connection with the riser pipe 300.

[0044] The vertical support tube 300 is the main structural component supporting the overall height of the machine, and its bottom is equipped with a vertical support tube connection structure 310. The vertical support tube connection structure 310 and the bushing connection structure 220 are matched with each other, and the two are fixedly connected by means of screw fastening, screwing, and snap-fit ​​engagement. Since the bushing 200 undertakes the connection transition function, the vertical support tube 300 does not need to be directly assembled with the heavy counterweight foot plate body 100 in a complicated manner, which greatly reduces the assembly difficulty.

[0045] In the actual assembly process, the operator first inserts the bushing 200 into the connecting post 110 of the counterweight foot plate body 100, so that the elastic hook structure 210 and the mating structure 111 automatically engage in place; then, the bottom of the vertical tube 300 is aligned with the bushing 200, and the final fixation is completed through the preset connection method. The entire process does not require special tools or high-precision alignment, which significantly improves the assembly speed and consistency of the production line.

[0046] Please see Figures 5 to 7 In some embodiments, the elastic hook structure 210 includes two opposing and spaced elastic hooks 211. The end of the connecting post 110 is provided with a mounting hole 112, which extends axially along the connecting post 110. The edge of the mounting hole 112 is provided with a mating structure 111, which is a limiting sidewall. The limiting sidewall surrounds the edge of the mounting hole 112 and extends radially along the mounting hole 112. Both elastic hooks 211 are located within the mounting hole 112 and are engaged with the limiting sidewall.

[0047] The foot plate assembly 10 features a symmetrically arranged double elastic hook structure 210. The two elastic hooks 211 are opposite each other and maintain a certain distance, forming a stable and reliable locking mechanism. This structure is located at the inner end of the bushing 200 and extends towards the connecting post 110 of the counterweight foot plate body 100.

[0048] The counterweight foot plate body 100 has a mounting hole 112 at the end of the connecting post 110, which extends through or partially into the interior of the connecting post 110 along its axial direction. A limiting sidewall is formed around the edge of the mounting hole 112, circumferentially surrounding it and protruding radially outward. This limiting sidewall serves as a mating structure 111, mechanically engaging with the elastic hook 211 to restrict the axial movement of the bushing 200.

[0049] During assembly, two elastic hooks 211 enter the mounting holes 112 and undergo elastic deformation due to force as they pass through the holes. Once the elastic hooks 211 have passed the lower edge of the limiting sidewall, the elastic restoring force causes them to spring back, causing their outer end faces to press tightly against and engage with the bottom surface of the limiting sidewall. This engagement effectively prevents the bushing 200 from detaching from the connecting post 110, ensuring a secure and reliable connection between the bushing 200 and the counterweight foot plate body 100.

[0050] Because the two elastic hooks 211 are symmetrically distributed, the force is evenly distributed, and the locking process is smooth, avoiding tilting or jamming problems caused by unilateral force. At the same time, the annular structure of the limiting sidewall provides a continuous support surface for the elastic hooks 211, further enhancing the stability and durability of the connection.

[0051] Please see Figure 6 In some embodiments, each elastic hook 211 is provided with a corresponding reinforcing rib 212, and each reinforcing rib 212 is connected to the corresponding elastic hook 211 and bushing 200.

[0052] To enhance the structural strength and service life of the elastic hooks 211, each elastic hook 211 is equipped with an independent reinforcing rib 212. The two reinforcing ribs 212 are respectively set for the two elastic hooks 211 and extend along the inner wall of the bushing 200.

[0053] One end of each reinforcing rib 212 is connected to the root of the corresponding elastic hook 211, and the other end is fixed to the main structure of the bushing 200. The reinforcing rib 212, the elastic hook 211, and the bushing 200 are manufactured using an integral molding process, forming a continuous and stable mechanical transmission path. This design effectively disperses the stress borne by the elastic hook 211 during assembly or use, avoiding fracture or plastic deformation caused by local stress concentration.

[0054] The cross-sectional shape of the reinforcing rib 212 can be rectangular, trapezoidal, or arc-shaped, and its thickness and height can be optimized according to the material properties and stress requirements. While ensuring that the elastic hook 211 has sufficient elasticity, the reinforcing rib 212 significantly improves the rigidity and fatigue resistance of the overall structure, enabling the hook to maintain good springback and engagement accuracy after multiple insertions and removals.

[0055] Furthermore, the installation of the reinforcing rib 212 does not affect the assembly space between the bushing 200 and the connecting column 110. Since the reinforcing rib 212 is located inside the bushing 200 and extends close to the inner wall, the overall dimensions remain compact and do not affect the fit between the foot plate assembly 10 and other components.

[0056] Please see Figure 5 and Figure 9 In some embodiments, the bushing connection structure 220 is an external threaded connection structure, and the vertical pipe connection structure 310 is an internal threaded connection structure, with the internal threaded connection structure and the external threaded connection structure being threadedly connected.

[0057] The connection between the bushing 200 and the vertical pipe 300 is achieved by a threaded fit. The outer circumferential surface of the bushing 200 is provided with an external thread connection structure. The external thread is uniformly machined along a section of the bushing 200 axial direction. The pitch, thread profile and tolerance grade all conform to the standard thread specifications to ensure the interchangeability and reliability of the connection.

[0058] The bottom inner wall of the riser tube 300 is provided with an internal thread connection structure, which matches the external thread on the bushing 200. The direction of rotation, pitch, and effective engagement length of the internal thread are precisely designed to form a complete and tight threaded pair with the external thread. When the riser tube 300 is screwed into the bushing 200, the internal and external threads interlock, and the rotational motion is converted into axial fastening force, thereby firmly fixing the riser tube 300 to the bushing 200.

[0059] Threaded connections offer advantages such as simple structure, convenient assembly and disassembly, and high connection strength. During assembly, the operator only needs to align the vertical pipe 300 with the bushing 200 and rotate clockwise to tighten it; for disassembly, simply rotate in the opposite direction to separate the components, without the need for additional tools or destructive operations. This connection method is particularly suitable for household appliances that require frequent assembly, transportation, or maintenance.

[0060] To prevent threaded connections from loosening due to vibration during equipment operation, anti-loosening structures can be added to the thread mating area. These measures include installing a locking flange at the beginning of the thread, using nylon insert threads, or applying thread-locking adhesive after assembly. These measures further improve the vibration resistance and long-term stability of the connection.

[0061] Please see Figure 2 , Figure 7 and Figure 8 In some embodiments, the counterweight foot plate body 100 includes a base 120, a top cover 130, and a weight block 140. The base 120 is provided with a connecting post 110, and the top cover 130 is provided with a through hole 131. The connecting post 110 passes through the through hole 131. The base 120 and the top cover 130 cooperate to form an accommodating space 150, and the weight block 140 is disposed in the accommodating space 150.

[0062] In this embodiment, the counterweight base plate 100 adopts a split structure design, including three main components: a chassis 120, a top cover 130, and a weight block 140. This structure not only facilitates internal assembly and maintenance but also allows for flexible adjustment of the overall weight to meet the stability requirements of different products.

[0063] The chassis 120 serves as the bottom support for the counterweight foot plate body 100, and is typically made of high-strength plastic, metal, or composite materials, possessing excellent load-bearing capacity and impact resistance. A connecting post 110 extends upward from the central area of ​​the chassis 120. This connecting post 110 mates with the bushing 200 to indirectly connect the foot plate assembly 10 to the vertical support tube 300. The outer circumferential surface of the connecting post 110 is provided with a mating structure 111, the specific form of which can be determined according to the actual connection method.

[0064] The top cover 130 covers the chassis 120, and its outline matches the edge of the chassis 120 to ensure a tight fit. A through hole 131 is provided in the center of the top cover 130. The inner diameter of the through hole 131 is slightly larger than the outer diameter of the connecting post 110, allowing the connecting post 110 to pass smoothly through the through hole 131 and extend upwards. The position of the through hole 131 is strictly aligned with the axis of the connecting post 110 to ensure assembly accuracy and structural symmetry.

[0065] The chassis 120 and the top cover 130 are fixedly connected by means of clips, screws, ultrasonic welding, or hot fusion, forming a closed or semi-closed receiving space 150. This receiving space 150 is used to install the weight block 140. The weight block 140 can be made of iron, precast concrete, high-density plastic, or other high-density materials, and its shape is adapted to the receiving space 150 to make full use of the internal volume and keep the center of gravity in the center.

[0066] By encapsulating the weight block 140 between the chassis 120 and the top cover 130, the overall appearance of the machine is simple and neat, while effectively preventing problems such as displacement, detachment, or corrosion of the weight block 140 during transportation or use. In addition, this modular design allows for flexible replacement of weight blocks 140 of different weights according to product models or usage scenarios, improving the versatility and adaptability of the foot plate assembly 10.

[0067] Please see Figure 7 In some embodiments, there are multiple weight blocks 140, which are arranged sequentially along the circumference of the connecting column 110.

[0068] Multiple weight blocks 140 are arranged sequentially around the connecting column 110 in a circumferential manner, forming a ring-shaped counterweight layout. This arrangement effectively improves the overall balance and anti-tipping ability of the counterweight base 100, and is especially suitable for rotating electrical equipment with high requirements for operational stability, such as floor fans or tower fans.

[0069] Each weight 140 has the same geometry and mass, and is typically a fan-shaped, arc-shaped, or rectangular block structure, with its outer contour matching the shape of the inner cavity of the chassis 120. Multiple weights 140 are evenly distributed along the circumference of the connecting column 110, with small gaps between adjacent weights 140 or separated by positioning structures to avoid mutual compression or jamming due to thermal expansion and contraction or manufacturing tolerances during assembly.

[0070] The chassis 120 has positioning bosses, slots, or partition ribs inside to limit the weight blocks 140, ensuring that each weight block 140 remains in a fixed position within the accommodating space 150 and preventing displacement during transportation, handling, or use. After the top cover 130 is installed in place, it further presses the top of the weight blocks 140, forming a two-way constraint from top to bottom, enhancing the stability of the overall structure.

[0071] The design employs multiple circumferentially arranged weight blocks 140, which offers several advantages compared to a single large-volume weight block 140. First, the modular configuration facilitates quality control and weight adjustment during production. Second, it provides greater flexibility in material utilization and mold forming, reducing the difficulty of injection molding or casting. Third, if any part of the weight block 140 is damaged, it can be replaced individually without the need for complete scrapping, thus improving maintenance economy.

[0072] In addition, the circumferentially distributed weight blocks 140 ensure that the center of gravity of the counterweight foot plate body 100 is always located on the axis of the connecting column 110, which significantly reduces vibration or shaking caused by eccentric counterweight, thereby improving the overall stability of the machine and the user experience.

[0073] In some embodiments, the edge of the through hole 131 is provided with a clamping wall 132, which surrounds the edge of the through hole 131 and extends along the axial direction of the through hole 131, and one end of the vertical tube 300 is clamped between the clamping wall 132 and the bushing 200.

[0074] The clamping wall 132 extends continuously around the through hole 131 in the circumferential direction and protrudes upward or downward along the axial direction of the through hole 131 to form a cylindrical structure. The main function of the clamping wall 132 is to work together with the bushing 200 to form a double constraint on the lower end of the ground tube 300 in the axial and radial directions after the foot plate assembly 10 is assembled.

[0075] The bottom end of the riser tube 300 is inserted into the central area of ​​the top cover 130, passing through the through hole 131 during assembly and extending into the annular space enclosed by the clamping wall 132. The bushing 200 is fitted around the outer periphery of the connecting post 110 and located inside the clamping wall 132. After the bushing 200 and the riser tube 300 are connected, the bottom end of the riser tube 300 is securely clamped between the inner surface of the clamping wall 132 and the outer surface of the bushing 200. This clamping structure effectively limits the shaking, displacement, or rotational loosening of the riser tube 300 during use.

[0076] The height, thickness, and inner diameter of the clamping wall 132 are precisely designed to ensure a suitable clamping force between it and the outer wall of the bushing 200. This clamping force is sufficient to provide good clamping stability without causing assembly difficulties or material stress cracking due to interference fit. In some embodiments, the inner surface of the clamping wall 132 may be provided with anti-slip textures, elastic bumps, or cushioning rubber rings to further enhance frictional resistance and absorb minor vibrations during operation.

[0077] This clamping structure not only improves the overall rigidity between the riser tube 300 and the foot plate assembly 10, but also provides auxiliary positioning and support for the bushing 200, preventing axial displacement or tilting of the bushing 200 under long-term stress. Meanwhile, since the clamping wall 132 is integrated into the top cover 130, no additional independent parts are needed, simplifying the structural composition and reducing manufacturing costs and assembly complexity.

[0078] Please see Figure 6 and Figure 7 In some embodiments, the outer periphery of the connecting post 110 is provided with a first anti-rotation part 113, and the inner periphery of the bushing 200 is provided with a second anti-rotation part 230. The second anti-rotation part 230 cooperates with the first anti-rotation part 113 to restrict the bushing 200 from rotating relative to the connecting post 110.

[0079] The first anti-rotation part 113 and the second anti-rotation part 230 cooperate with each other to form an anti-rotation structure, which effectively restricts the bushing 200 from rotating circumferentially relative to the connecting column 110.

[0080] The first anti-rotation part 113 may adopt a planar shape, a raised ridge, a keyway, a polygonal profile, or other non-circular cross-sectional structure, extending a certain distance along the axial direction of the connecting post 110. Correspondingly, the second anti-rotation part 230 is disposed on the inner wall of the bushing 200, and its shape is complementary to that of the first anti-rotation part 113, such as a corresponding planar groove, an embedded key, a polygonal hole, etc. When the bushing 200 is fitted into the connecting post 110, the second anti-rotation part 230 and the first anti-rotation part 113 fit tightly together, so that the two form a rigid limit in the circumferential direction.

[0081] The anti-rotation mating structure 111 ensures that the bushing 200 remains in a fixed position after installation, preventing the bushing 200 from twisting relative to the connecting post 110 due to external forces or vibrations. This design is particularly important for the directional installation of the subsequent riser 300—for example, when the riser 300 has cable channels, decorative strips, or specific interface directions, its angular position must be accurate and cannot be rotated arbitrarily.

[0082] Furthermore, the anti-rotation structure also enhances the overall mechanical stability of the connection. During equipment operation, especially in electrical appliances with periodic torque output such as fans, if the bushing 200 can rotate freely, it may cause loosening of the connection, abnormal noise, or even structural failure. By setting the first anti-rotation part 113 and the second anti-rotation part 230, the torque load is effectively transmitted and dispersed, enhancing the torsional resistance and long-term reliability of the foot plate assembly 10.

[0083] Please see Figure 6 In some embodiments, the second anti-rotation part 230 is provided with a process hole 231, and the extension direction of the process hole 231 is consistent with the extension direction of the second anti-rotation part 230.

[0084] The bushing 200 has a second anti-rotation part 230 on its inner circumference with a process hole 231, which extends through or partially extends along the extension direction of the second anti-rotation part 230. The process hole 231 is mainly provided to meet the requirements of molding, demolding and dimensional control in the manufacturing process, while also taking into account the requirements of lightweight structure and ease of assembly.

[0085] The second anti-rotation part 230 is typically a protrusion, groove, or polygonal inner wall structure extending axially along the bushing 200, used to cooperate with the first anti-rotation part 113 on the connecting column 110 to achieve circumferential limiting. A process hole 231 is opened inside this anti-rotation structure, which can effectively reduce the resistance to material flow during injection molding or die casting, improve filling uniformity, and reduce defects such as shrinkage marks, bubbles, or internal stress concentration caused by excessive local wall thickness.

[0086] The cross-sectional shape of the process hole 231 can be circular, elliptical, rectangular, or oblong, and its size and position are optimized according to the mold structure, material shrinkage rate, and mechanical performance requirements. While ensuring sufficient structural strength of the second anti-rotation part 230, the introduction of the process hole 231 helps to shorten cooling time, improve production efficiency, and reduce the overall weight of the bushing 200, thus contributing to the overall lightweight design of the machine.

[0087] Furthermore, during the mold opening stage, the process hole 231 provides operating space for the ejector pin or demolding mechanism, facilitating the smooth ejection of the bushing 200 component with its complex inner contour, and preventing product deformation or surface damage due to excessive clamping force. For bushings 200 using metal inserts or secondary molding processes, the process hole 231 can also serve as a positioning reference or venting channel, further improving manufacturing accuracy and yield.

[0088] This application also provides a fan, which includes a foot plate assembly 10 and a fan body according to any of the above embodiments. The fan body is connected to the foot plate assembly 10.

[0089] The foot plate assembly 10 serves as the bottom support structure of the entire machine, undertaking the functions of counterweight and stability; the fan body is installed on top of the foot plate assembly 10 to realize core functions such as air supply, oscillation, and wind speed adjustment.

[0090] The fan body is connected to the base assembly 10 via a ground tube 300. Specifically, the lower end of the ground tube 300 is fixedly connected to the bushing 200 in the base assembly 10, while the upper end is connected to the base of the fan body or the motor housing. This connection method ensures that the fan body is stably supported on the ground and maintains good balance and anti-tipping ability during operation.

[0091] The fan body is the core component of a fan device that enables airflow and ventilation. It typically includes major components such as a motor, fan blades, a grille, an oscillation mechanism, control components, and a housing structure.

[0092] The motor is mounted at the center of the fan body, serving as the power source to drive the fan blades to rotate at high speed. The motor can be an AC motor, a DC brushless motor, or other high-efficiency and energy-saving types, and its output shaft is directly connected to the fan blades or through a transmission structure. The fan blades consist of multiple blades, the shape, angle, and number of which are aerodynamically optimized to generate a strong and uniform airflow under low-noise conditions.

[0093] The fan blades are equipped with a front and rear grille, which together form a safety protection structure to prevent users' fingers or foreign objects from contacting the rotating fan blades. They also straighten the airflow, improving air delivery efficiency. The grilles are typically made of metal wire or high-strength plastic, offering good strength, corrosion resistance, and aesthetics.

[0094] Some fans also integrate an oscillation mechanism, which consists of a gear set, linkage, or motor drive, allowing the fan to oscillate left and right to expand the airflow coverage. The oscillation angle can be set to a fixed value (such as 60°, 90°, 120°) according to the product design or can be customized by the user.

[0095] The control unit is used to adjust the fan's operating status, including functions such as fan speed switching, timer shutdown, oscillation start / stop, and natural wind mode. Control methods include mechanical knobs, button panels, or smart remote control / APP control; high-end models also support voice interaction or automatic speed adjustment based on ambient light.

[0096] The outer shell structure encloses and supports the aforementioned functional modules, typically made of injection-molded engineering plastics, balancing structural strength, heat dissipation, and aesthetic design. The shell surface can be painted, electroplated, or textured to enhance the product's texture and stain resistance.

[0097] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and 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. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0098] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A foot plate assembly, characterized in that, include: The counterweight foot plate body is provided with a connecting column, and the connecting column is provided with a mating structure; A bushing, wherein the bushing is fitted around the outer periphery of the connecting post, the bushing having an elastic hook structure and a bushing connection structure, the elastic hook structure engaging and fixing with the mating structure; and A ground pipe, wherein the ground pipe is provided with a ground pipe connection structure, and the ground pipe connection structure is fixedly connected to the bushing connection structure.

2. The foot plate assembly according to claim 1, characterized in that, The elastic hook structure includes two opposing and spaced elastic hooks. The end of the connecting post is provided with a mounting hole, which extends along the axial direction of the connecting post. The edge of the mounting hole is provided with the mating structure, which is a limiting sidewall. The limiting sidewall surrounds the edge of the mounting hole and extends radially along the mounting hole. Both of the elastic hooks are located inside the mounting holes and are fastened to the limiting sidewall.

3. The foot plate assembly according to claim 2, characterized in that, Each of the elastic hooks is provided with a corresponding reinforcing rib, and each reinforcing rib is connected to the corresponding elastic hook and the bushing.

4. The foot plate assembly according to claim 1, characterized in that, The bushing connection structure is an external threaded connection structure, and the vertical pipe connection structure is an internal threaded connection structure. The internal threaded connection structure is threadedly connected to the external threaded connection structure.

5. The foot plate assembly according to claim 1, characterized in that, The counterweight foot plate body includes a base, a top cover, and a weight block. The base is provided with the connecting column, the top cover is provided with a through hole, the connecting column passes through the through hole, the base and the top cover cooperate to form an accommodating space, and the weight block is disposed in the accommodating space.

6. The foot plate assembly according to claim 5, characterized in that, The number of weights is multiple, and the multiple weights are arranged sequentially along the circumference of the connecting column.

7. The foot plate assembly according to claim 5, characterized in that, The edge of the through hole is provided with a clamping wall, which surrounds the edge of the through hole and extends along the axial direction of the through hole. One end of the vertical tube is clamped between the clamping wall and the bushing.

8. The foot plate assembly according to claim 1, characterized in that, The outer periphery of the connecting post is provided with a first anti-rotation part, and the inner periphery of the bushing is provided with a second anti-rotation part. The second anti-rotation part cooperates with the first anti-rotation part to restrict the bushing from rotating relative to the connecting post.

9. The foot plate assembly according to claim 8, characterized in that, The second anti-rotation part is provided with a process hole, and the extension direction of the process hole is consistent with the extension direction of the second anti-rotation part.

10. A fan, characterized in that, include: The foot plate assembly according to any one of claims 1 to 9; and The fan body is connected to the foot plate assembly.

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