Fan base capable of being magnetically attracted

Abstract

The utility model relates to the technical field of fan bases, and discloses a magnetically-attractable fan base which comprises a base assembly and a circular rotating plate, an anti-skid rotating handle is arranged on the upper portion of the base assembly, a guide groove is formed in the lower surface of the base assembly, and a protective sleeve embedded with a magnetic attraction block is attached to the lower surface of the base assembly in a sliding mode. The top end of the protective sleeve is slidably connected with arc-shaped guide grooves formed in the periphery of the top of the circular rotating plate through guide rods. A lower bevel gear is mounted at the top of the circular rotating plate, and the anti-skid rotating handle is coaxially connected with an upper bevel gear meshed with the lower bevel gear; the anti-skid rotating handle is operated, an upper bevel gear coaxial with the anti-skid rotating handle drives a lower bevel gear to drive a circular rotating plate to rotate, an arc-shaped guide groove drags a protective sleeve to do directional displacement along a guide groove through a guide rod, and position adjustment of a magnetic attraction block is achieved. Concealed protection and accurate position adjustment of the magnetic attraction device are completed in a limited space, and the protective sleeve synchronously moves to keep the working face of the magnetic attraction block clean and prevent external objects from directly making contact with the magnetic attraction component.

Description

Technical Field

[0001] This utility model relates to the field of fan base technology, specifically a magnetically attachable fan base. Background Technology

[0002] In the field of fan equipment technology, the structural design of the base, as a core component for support and fixation, directly affects the ease of installation and stability of the equipment. With the popularization of magnetic technology in small household appliances, fan bases with magnetic adsorption functions are gradually becoming an important development direction for improving the flexibility of equipment installation. These products can achieve quick positioning and fixation through magnetic force, and are especially suitable for usage scenarios that require frequent adjustment of installation position or adaptation to different support surfaces.

[0003] However, traditional magnetic fan bases face several technical bottlenecks in practical applications: their magnetic components typically employ a fixed mounting structure, making precise position adjustment difficult based on variations in mounting surface material or adsorption requirements, thus limiting the magnetic force's effective range; the magnetic components are frequently exposed to the external environment, and dust accumulation or accidental collisions can easily cause magnetic attenuation and surface damage, while adding a protective cover increases operational complexity; existing adjustment mechanisms often employ multi-stage gear transmissions or elastic snap-fit ​​structures, which not only occupy significant installation space but also exhibit lag and precision deviations during adjustment, making it difficult to achieve concealed protection and precise control of the magnetic device within a confined base structure, thus limiting the product's adaptability in complex installation environments. Therefore, a magnetically attachable fan base is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a magnetically attachable fan base, which solves the technical problem that the magnetic components typically use a fixed installation structure, making it difficult to precisely adjust their position according to differences in the mounting surface material or adsorption requirements, thus limiting the range of magnetic force.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a magnetically attachable fan base, comprising:

[0006] The base assembly includes an anti-slip rotating handle located on the upper front of the base assembly. A guide groove is provided on the lower surface of the base assembly, and a protective sleeve is slidably fitted into the inner cavity of the guide groove. A magnetic block is installed in the inner cavity of the protective sleeve. The anti-slip rotating handle is rotatably connected to the base assembly.

[0007] A circular rotating plate is rotatably connected to the bottom of the inner cavity of the base assembly, and a lower bevel gear is installed at the top center of the circular rotating plate, and an upper bevel gear meshes with the front end of the lower bevel gear, and the upper bevel gear is coaxially connected to the anti-slip rotating handle.

[0008] Arc-shaped guide grooves are formed around the top of the circular rotating plate, and guide rods are slidably connected to the inner cavities of the arc-shaped guide grooves. The bottom end of the guide rod is connected to the top end of the protective sleeve. When the operator rotates the anti-slip handle, the anti-slip handle drives the coaxially connected upper bevel gear to rotate around its own axis.

[0009] The upper bevel gear and the lower bevel gear form a bevel gear transmission pair, driving the lower bevel gear and the circular rotating plate fixed to it to rotate around the bottom axis of the inner cavity of the base assembly;

[0010] When the circular plate rotates, the arc-shaped guide grooves opened around its top rotate synchronously, pushing the guide rods that are slidably connected to the inner cavity of the arc-shaped guide grooves to produce radial displacement.

[0011] The bottom end of the guide rod is rigidly connected to the top end of the protective sleeve, causing the protective sleeve to slide linearly along the guide groove opened on the lower surface of the base assembly;

[0012] During the sliding process of the protective sleeve, the magnetic block installed in its inner cavity moves synchronously with the protective sleeve, thereby adjusting the position of the magnetic block.

[0013] Preferably, the base assembly includes a connecting cover plate and a protective housing, with the connecting cover plate disposed on top of the protective housing, and the connecting cover plate and the protective housing connected by bolts. The connecting cover plate is placed on top of the protective housing, aligning its bottom with the top opening of the protective housing, and then fixedly connected to the protective housing using bolts, completing the initial assembly of the base assembly.

[0014] Preferably, positioning protrusions are installed on both sides of the bottom of the connecting cover plate, and positioning grooves are formed on both sides of the inner wall of the protective housing, with the positioning protrusions and positioning grooves being inserted and connected. The positioning protrusions on the bottom of the connecting cover plate are aligned with the positioning grooves on both sides of the inner wall of the protective housing, and the connecting cover plate is pushed downwards to fully insert the positioning protrusions into the positioning grooves, thus achieving initial positioning of the connecting cover plate and the protective housing.

[0015] Preferably, the lower part of the inner wall of the protective shell is provided with an annular groove, which is connected to the positioning groove, and side connecting blocks are rotatably connected to both sides of the inner cavity of the annular groove. The side connecting blocks can rotate within the annular groove with the corresponding structure. When the positioning protrusion is inserted into the positioning groove, the bottom of the positioning protrusion contacts the side connecting blocks in the annular groove.

[0016] Preferably, the side connecting block is connected to both sides of the outer surface of the rotary plate, and the shape and position of the side connecting block correspond to those of the positioning groove. The side connecting block can be connected to and separated from the protective shell through the positioning groove.

[0017] Preferably, the upper part of both the front and back sides of the protective housing has a limiting slot, and a limiting plate is inserted into the inner cavity of each limiting slot. The top of the limiting plate is tightly fitted with the bottom of the connecting cover plate, and a rotating rod is rotatably connected to the inner side of the limiting plate. The upper bevel gear and the anti-slip handle are connected through the rotating rod. When the limiting plate is inserted into the limiting slot on the upper part of the front and back sides of the protective housing, the top of the limiting plate is tightly fitted with the bottom of the connecting cover plate. The rotating rod is driven to rotate by the anti-slip handle, which in turn drives the upper bevel gear to rotate, thereby achieving longitudinal locking between the limiting plate and the connecting cover plate.

[0018] Compared with the prior art, this utility model provides a magnetically attachable fan base with the following features:

[0019] Beneficial effects:

[0020] The magnetic fan base has a guide groove on the lower surface of the base assembly that slides and fits into the protective sleeve to form a sliding guide mechanism. The magnetic block embedded in the protective sleeve forms a linkage system with the arc-shaped guide groove on the top of the rotating plate through the guide rod.

[0021] When the anti-slip handle is operated, the upper bevel gear connected to it drives the lower bevel gear to rotate the circular plate. This causes the arc-shaped guide groove to pull the protective sleeve along the guide groove for directional displacement. This mechanical transmission design makes the position adjustment of the magnetic block more precise. The synchronous movement of the protective sleeve keeps the working surface of the magnetic block clean and prevents external objects from directly contacting the magnetic components. It also achieves the functions of hidden protection and precise position adjustment of the magnetic device in a limited space, which not only extends the service life of the magnetic components but also improves the adaptability of the fan base in different installation environments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall bottom structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the detachable structure of the base assembly of this utility model;

[0025] Figure 4 This is a schematic diagram of the protective shell and its connection structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the separation structure of the protective shell, the rotating plate, and the upper bevel gear of this utility model;

[0027] Figure 6 This is a schematic diagram of the bottom structure of the circular rotating plate of this utility model.

[0028] In the diagram: 1. Positioning groove; 2. Annular rotating groove; 3. Side connecting block; 4. Limiting slot; 5. Base assembly; 6. Rotating rod; 7. Limiting insert plate; 8. Connecting cover plate; 9. Protective shell; 10. Guide groove; 11. Protective sleeve; 12. Magnetic block; 13. Circular rotating plate; 14. Lower bevel gear; 15. Upper bevel gear; 16. Anti-slip rotating handle; 17. Arc-shaped guide groove; 18. Guide rod; 19. Positioning protrusion. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] This utility model provides a technical solution: a magnetically attachable fan base, comprising: (see details) Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The base assembly 5 and the anti-slip rotating handle 16 are provided on the upper front of the base assembly 5. The lower surface of the base assembly 5 is provided with a guide groove 10, and a protective sleeve 11 is slidably attached to the inner cavity of the guide groove 10. A magnetic block 12 is installed in the inner cavity of the protective sleeve 11. The anti-slip rotating handle 16 is rotatably connected to the base assembly 5.

[0031] The circular rotating plate 13 is rotatably connected to the bottom of the inner cavity of the base assembly 5, and a lower bevel gear 14 is installed at the top center of the circular rotating plate 13, and an upper bevel gear 15 meshes with the front end of the lower bevel gear 14, and the upper bevel gear 15 is coaxially connected with the anti-slip rotating handle 16.

[0032] Arc-shaped guide grooves 17 are formed around the top of the circular rotating plate 13, and guide rods 18 are slidably connected to the inner cavity of each arc-shaped guide groove 17. The bottom end of the guide rod 18 is connected to the top end of the protective sleeve 11. When the operator rotates the anti-slip handle 16, the anti-slip handle 16 drives the coaxially connected upper bevel gear 15 to rotate around its own axis.

[0033] The upper bevel gear 15 and the lower bevel gear 14 form a bevel gear transmission pair, driving the lower bevel gear 14 and the circular rotating plate 13 fixed thereto to rotate around the bottom axis of the inner cavity of the base assembly 5.

[0034] When the circular plate 13 rotates, the arc-shaped guide grooves 17 opened around its top rotate synchronously, pushing the guide rod 18, which is slidably connected to the inner cavity of the arc-shaped guide grooves 17, to produce radial displacement.

[0035] The bottom end of the guide rod 18 is rigidly connected to the top end of the protective sleeve 11, which drives the protective sleeve 11 to slide linearly along the guide groove 10 opened on the lower surface of the base assembly 5.

[0036] During the sliding process of the protective sleeve 11, the magnetic block 12 installed in its inner cavity moves synchronously with the protective sleeve 11, thereby adjusting the position of the magnetic block 12;

[0037] The upper bevel gear 15 and the lower bevel gear 14 achieve vertical transmission of rotational motion, so that the rotational operation of the anti-slip handle 16 can be efficiently converted into the rotational motion of the circular plate 13, significantly reducing the operating torque and improving the ease of adjustment.

[0038] The crank-slider mechanism formed by the arc-shaped guide groove 17 and the guide rod 18 converts the continuous rotational motion of the circular plate 13 into the smooth linear motion of the protective sleeve 11, ensuring the accuracy and stability of the displacement process of the magnetic block 12.

[0039] The magnetic block 12 is position-adjustable through the protective sleeve 11, allowing the device to be adapted to different mounting surfaces, significantly expanding the applicable scenarios of the magnetic fixing method.

[0040] Please see Figure 3 and Figure 4The base assembly 5 includes a connecting cover plate 8 and a protective housing 9, with the connecting cover plate 8 positioned on top of the protective housing 9 and connected to the protective housing 9 by bolts. The connecting cover plate 8 is placed on top of the protective housing 9, aligning its bottom with the top opening of the protective housing 9. The connecting cover plate 8 and the protective housing 9 are then fixed together by bolts, completing the initial assembly of the base assembly 5. The bolted connection between the connecting cover plate 8 and the protective housing 9 ensures the overall structural stability of the base assembly 5 and facilitates disassembly and maintenance. Positioning protrusions 19 are installed on both sides of the bottom of the connecting cover plate 8, and positioning grooves 1 are formed on both sides of the inner wall of the protective housing 9, with the positioning protrusions 19 interlocking with the positioning grooves 1. Align the positioning protrusion 19 at the bottom of the connecting cover plate 8 with the positioning grooves 1 on both sides of the inner wall of the protective housing 9, and push the connecting cover plate 8 downwards so that the positioning protrusion 19 is fully inserted into the positioning groove 1, achieving initial positioning of the connecting cover plate 8 and the protective housing 9. The insertion design of the positioning protrusion 19 and the positioning groove 1 ensures precise alignment of the connecting cover plate 8 and the protective housing 9, avoiding assembly deviations and improving assembly efficiency. An annular rotating groove 2 is provided at the lower part of the inner wall of the protective housing 9, and the annular rotating groove 2 communicates with the positioning groove 1. Side connecting blocks 3 are rotatably connected to both sides of the inner cavity of the annular rotating groove 2. The side connecting blocks 3 can rotate within the annular rotating groove 2 according to the corresponding structure. When the positioning protrusion 19 is inserted into the positioning groove 1, the bottom of the positioning protrusion 19 contacts the side connecting blocks 3 in the annular rotating groove 2. The side connecting blocks 3 are connected to both sides of the outer surface of the circular rotating plate 13, and the shape and position of the side connecting blocks 3 correspond to those of the positioning groove 1. The side connecting blocks 3 can be connected to and separated from the protective housing 9 through the positioning groove 1.

[0041] Please see Figure 5 The protective housing 9 has a limit slot 4 on the upper part of both the front and back sides, and a limit plate 7 is inserted into the inner cavity of the limit slot 4. The top of the limit plate 7 is tightly fitted with the bottom of the connecting cover plate 8, and a rotating rod 6 is rotatably connected to the inner side of the limit plate 7. The upper bevel gear 15 is connected to the anti-slip handle 16 through the rotating rod 6. Insert the limiting plate 7 into the limiting slot 4 on the upper part of the front and back of the protective housing 9, so that the top of the limiting plate 7 fits tightly with the bottom of the connecting cover plate 8. Drive the rotating rod 6 to rotate through the anti-slip handle 16, which in turn drives the upper bevel gear 15 to rotate, thereby achieving longitudinal locking between the limiting plate 7 and the connecting cover plate 8. The insertion and engagement of the limiting plate 7 and the limiting slot 4, combined with the longitudinal locking mechanism driven by the rotating rod 6, effectively prevents the connecting cover plate 8 and the protective housing 9 from loosening in the vertical direction, improving the overall connection reliability. The transmission design of the anti-slip handle 16 and the upper bevel gear 15 allows the operator to achieve precise locking by manual rotation, simplifying the operation process and facilitating disassembly and assembly.

[0042] In this design: when the operator rotates the anti-slip handle 16, the anti-slip handle 16 drives the coaxially connected upper bevel gear 15 to rotate around its own axis. The upper bevel gear 15 and the lower bevel gear 14 form a bevel gear transmission pair, driving the lower bevel gear 14 and the circular rotating plate 13 fixed to it to rotate around the bottom axis of the inner cavity of the base assembly 5. When the circular rotating plate 13 rotates, the arc-shaped guide groove 17 opened around its top rotates synchronously, pushing the guide rod 18 slidably connected to the inner cavity of the arc-shaped guide groove 17 to produce radial displacement. The bottom end of the guide rod 18 is rigidly connected to the top end of the protective sleeve 11, driving the protective sleeve 11 to slide linearly along the guide groove 10 opened on the lower surface of the base assembly 5. During the sliding process of the protective sleeve 11, the magnetic block 12 installed in its inner cavity moves synchronously with the protective sleeve 11, realizing the position adjustment of the magnetic block 12.

[0043] When assembling the base assembly 5, the connecting cover plate 8 is placed on top of the protective housing 9, aligning the bottom of the connecting cover plate 8 with the top opening of the protective housing 9. The connecting cover plate 8 is then fixedly connected to the protective housing 9 using bolts. The positioning protrusion 19 at the bottom of the connecting cover plate 8 is aligned with the positioning grooves 1 on both sides of the inner wall of the protective housing 9. The connecting cover plate 8 is pushed downwards, allowing the positioning protrusion 19 to be fully inserted into the positioning groove 1, thus completing the initial positioning of the connecting cover plate 8 and the protective housing 9. The bottom of the positioning protrusion 19 contacts the side connecting block 3 in the annular rotating groove 2, and the side connecting block 3 rotates with the circular rotating plate 13 in the annular rotating groove 2. The limiting insert plate 7 is inserted into the limiting slot 4 on the upper part of the front and back of the protective housing 9, so that the top of the limiting insert plate 7 is tightly fitted with the bottom of the connecting cover plate 8. The rotating rod 6 is driven to rotate by the anti-slip rotating handle 16, which in turn drives the upper bevel gear 15 to rotate, thereby achieving longitudinal locking between the limiting insert plate 7 and the connecting cover plate 8.

[0044] 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 process, method, article, or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A magnetically attachable fan base, characterized in that, include: The base assembly (5) and the anti-slip rotating handle (16) are provided on the upper front of the base assembly (5). The lower surface of the base assembly (5) is provided with a guide groove (10), and a protective sleeve (11) is slidably attached to the inner cavity of the guide groove (10). A magnetic block (12) is installed in the inner cavity of the protective sleeve (11). The anti-slip rotating handle (16) is rotatably connected to the base assembly (5). The circular rotating plate (13) is rotatably connected to the bottom of the inner cavity of the base assembly (5), and a lower bevel gear (14) is installed at the top center of the circular rotating plate (13), and an upper bevel gear (15) meshes with the front end of the lower bevel gear (14), and the upper bevel gear (15) is coaxially connected with the anti-slip rotating handle (16). Arc-shaped guide grooves (17) are opened around the top of the circular rotating plate (13), and guide rods (18) are slidably connected to the inner cavity of the arc-shaped guide grooves (17). The bottom end of the guide rods (18) is connected to the top end of the protective sleeve (11).

2. The magnetically attachable fan base according to claim 1, characterized in that: The base assembly (5) includes a connecting cover plate (8) and a protective housing (9), and the connecting cover plate (8) is disposed on the top of the protective housing (9). The connecting cover plate (8) and the protective housing (9) are connected by bolts.

3. The magnetically attachable fan base according to claim 2, characterized in that: The bottom sides of the connecting cover plate (8) are equipped with positioning protrusions (19), and positioning grooves (1) are provided on both sides of the inner wall of the protective shell (9), and the positioning protrusions (19) and positioning grooves (1) are inserted and connected.

4. A magnetically attachable fan base according to claim 3, characterized in that: The lower part of the inner wall of the protective shell (9) is provided with an annular groove (2), and the annular groove (2) is connected to the positioning groove (1), and side connecting blocks (3) are rotatably connected to both sides of the inner cavity of the annular groove (2).

5. A magnetically attachable fan base according to claim 4, characterized in that: The side connecting block (3) is connected to both sides of the outer surface of the circular rotating plate (13), and the shape and position of the side connecting block (3) correspond to those of the positioning groove (1).

6. A magnetically attachable fan base according to claim 2, characterized in that: The protective housing (9) has a limit slot (4) on the upper part of both the front and back sides, and a limit plate (7) is inserted into the inner cavity of the limit slot (4). The top of the limit plate (7) is tightly fitted with the bottom of the connecting cover plate (8), and a rotating rod (6) is rotatably connected to the inner side of the limit plate (7). The upper bevel gear (15) and the anti-slip handle (16) are connected through the rotating rod (6).

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