A folding fan

Abstract

This utility model belongs to the field of fan technology, specifically relating to a folding fan, including a fan body, a telescopic rod, a connecting mechanism, and a base. The fan body is rotatably connected to the telescopic rod via the connecting mechanism to adjust the opening angle of the fan body relative to the telescopic rod. A slip ring is provided at the bottom of the telescopic rod, allowing it to slide relative to the base. The base includes a housing with pre-drilled holes on its side walls and top surface for the telescopic rod to extend from the base. A rotating groove is also provided at the location of the pre-drilled holes. When the telescopic rod slides out of the pre-drilled holes relative to the base, the slip ring, positioned in the rotating groove, can rotate within the groove, making the telescopic rod perpendicular to the base. This component design not only optimizes the base structure and improves aesthetics but also enhances the fan body's rotational freedom.

Description

Technical Field

[0001] This utility model belongs to the field of fan technology, specifically relating to a folding fan. Background Technology

[0002] With the widespread use of portable electrical appliances, folding fans have become a common device in daily life and office settings due to their convenient storage and flexible portability. Existing folding fans typically include a foldable fan body, a support base, and a rotating structure connecting the fan body and the base. The folding design reduces the storage volume, meeting users' needs for portability.

[0003] However, existing folding fans still have many shortcomings in terms of structural design and user experience. For example, to achieve folding and storage or fixation of the fan body and base, existing bases generally have storage holes or grooves that match the connection end of the fan body. These storage holes are exposed when the fan is unfolded, which damages the overall integrity and aesthetics of the base and affects the visual quality of the product. Summary of the Invention

[0004] The purpose of this invention is to provide a folding fan that solves the technical problem of unattractive appearance of existing folding fans.

[0005] To achieve the above objectives, this utility model provides a folding fan, including a fan body, a telescopic rod, a connecting mechanism, and a base. The fan body is rotatably connected to the telescopic rod via the connecting mechanism to adjust the opening angle of the fan body relative to the telescopic rod. The bottom of the telescopic rod is provided with a slip ring, and the telescopic rod is slidably disposed in the base relative to the base. The base includes a housing, and the side wall and top surface of the housing are provided with pre-drilled holes for the telescopic rod to extend out of the base. The base is also provided with a rotating groove at the location of the pre-drilled holes. When the telescopic rod slides out of the pre-drilled holes relative to the base, and the slip ring is located in the rotating groove, the slip ring can rotate in the rotating groove, making the telescopic rod perpendicular to the base.

[0006] Preferably, the housing has a limiting plate extending along the diameter of the housing on both sides of the reserved hole, and the telescopic rod is located between the two limiting plates; the base also includes a rotating disk located below the housing, the rotating disk has a mating plate corresponding to the limiting plate, a gap is formed between the limiting plate and the mating plate, and the slip ring is located in the gap so that the telescopic rod slides relative to the base.

[0007] Preferably, the slip ring is interference-fitted with the pre-drilled hole in the housing. When the slip ring rotates in the rotating groove to make the telescopic rod perpendicular to the base, the slip ring engages in the housing to maintain the telescopic rod perpendicular to the base.

[0008] Preferably, the telescopic rod further includes an outer rod, an inner rod, a fixed ring, a retaining ring, and washers. The slip ring is fixedly sleeved on the bottom of the outer rod, and the inner rod is sleeved in the outer rod and can extend and retract relative to the outer rod. The fixed ring is located at the top of the inner rod, and a retaining ring is provided inside the fixed ring along the circumference of the fixed ring. The washers are located in the fixed ring and on both sides of the retaining ring. The washers are flexible washers, and the washers provide damping when the connecting mechanism rotates relative to the telescopic rod.

[0009] Preferably, the connecting mechanism includes a first connecting part and a second connecting part, the first connecting part being rotatably disposed in a fixed ring; the second connecting part being rotatably connected to the fan body, so that the fan body rotates relative to the connecting mechanism.

[0010] Preferably, the fan body includes a back plate, and a circular mounting hole is provided at the edge of the back plate. When the fan is in a folded state, the mounting hole is located above the reserved hole.

[0011] Preferably, the first connecting part includes a first connecting plate and a second connecting plate disposed on both sides of the fixing ring. The first connecting plate is provided with a mating tube, which is inserted into the washer. The mating tube has a through hole in the middle that divides the mating tube into two parts: a first arc plate and a second arc plate. The first arc plate is provided with a buckle, a mounting groove, and a limiting groove. The buckle extends along the thickness direction of the first arc plate. The mounting groove is adjacent to the buckle and extends through the inner side of the first arc plate along the thickness direction. The limiting groove is disposed at the end where the first arc plate connects to the first connecting plate and is connected to the mounting groove. The second arc plate is also provided with a buckle, a mounting groove, and a limiting groove. The buckle on the second arc plate is adjacent to the mounting groove on the first arc plate. The second connecting plate has the same structure as the first connecting plate.

[0012] Preferably, the second connecting part includes a first fixing plate perpendicular to the first connecting plate and a second fixing plate perpendicular to the second connecting plate, wherein the first fixing plate and the second fixing plate are in contact; the first fixing plate is provided with a plurality of buckles perpendicular to the first fixing plate; the second fixing plate has the same structure as the first fixing plate; after the outer surfaces of the buckles on the first fixing plate and the second fixing plate are connected, the overall outline is circular; the second connecting part is engaged in the mounting hole by a plurality of buckles, so that the connecting mechanism is connected to the fan body and the fan body rotates relative to the connecting mechanism.

[0013] Preferably, the second connecting part further includes a reinforcing member and an auxiliary block arranged perpendicularly to the first fixing plate and the second fixing plate, and the outer contours of the reinforcing member, the auxiliary block, the first fixing plate and the buckle on the second fixing plate are circular.

[0014] Preferably, the connecting mechanism is provided with a limiting rod at one end adjacent to the fan body, and a limiting ring is provided in the fan body at the corresponding position of the limiting rod. The limiting rod is inserted into the limiting ring to limit the rotation angle of the fan body around the connecting mechanism and prevent the user from excessively rotating the fan body, which could damage the power cord.

[0015] The folding fan provided in this embodiment of the utility model has at least one of the following technical effects:

[0016] This utility model discloses a folding fan. Through a pre-drilled hole in the base housing and a rotating groove, combined with a slip ring structure at the bottom of the telescopic rod, the telescopic rod can be completely retracted into the base housing when the fan is in the folded state. The fan body folds and fits against the top surface of the base via a connecting mechanism. Compared to existing technologies, the base has no exposed storage holes or grooves, maintaining the overall integrity and aesthetics of the housing. When the fan is unfolded for use, the telescopic rod extends through the pre-drilled hole and achieves vertical positioning with the base by rotating the slip ring within the rotating groove. This fundamentally solves the aesthetic problem caused by the presence of storage holes in existing folding fan bases, improving the visual quality of the product.

[0017] This utility model discloses a folding fan. Through a connecting mechanism between the fan body and the telescopic rod, and the cooperation of a slip ring and a rotating groove between the telescopic rod and the base, one end of the telescopic rod is rotatably connected to the connecting mechanism, allowing flexible adjustment of the angle between the connecting structure and the telescopic rod. This enables adjustment of the fan head's opening and closing angle relative to the telescopic rod to meet the airflow requirements in the up-and-down tilting direction. The other end of the fan body is rotatably connected to the connecting mechanism, allowing the fan body to rotate around the connecting mechanism. A limiting mechanism is provided between this end and the fan body, ensuring that the maximum unidirectional rotation angle of the fan body relative to the connecting mechanism is 180°, preventing excessive rotation of the fan body and potential damage to the power cord. Simultaneously, the telescopic rod's extension function adjusts the height of the fan body, adapting to different usage scenarios such as desktops, bedside tables, and floors. Users can flexibly adjust the fan height, position, and airflow angle according to actual needs, significantly improving ease of use. It allows for multi-dimensional, large-angle fan head direction adjustment, significantly improving the fan head's rotation flexibility. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 An exploded view of a folding fan provided for an embodiment of this utility model.

[0020] Figure 2 A perspective view of the back plate in a folding fan provided for an embodiment of this utility model.

[0021] Figure 3 A perspective view of a baffle in a folding fan provided for an embodiment of this utility model.

[0022] Figure 4 This is a perspective view of a connecting mechanism in a folding fan, provided as an embodiment of the present utility model.

[0023] Figure 5 This is a partial view of a connecting mechanism in a folding fan provided as an embodiment of the present invention.

[0024] Figure 6 A side view of a connecting mechanism in a folding fan provided for an embodiment of this utility model.

[0025] Figure 7 This is a partial view of a folding fan provided for an embodiment of the present utility model.

[0026] Figure 8 A perspective view of the housing in a folding fan provided for an embodiment of this utility model.

[0027] The following are the labeling elements in the figure:

[0028] 10—Fan body 11—Back plate 12—Mounting hole 121—Matching groove 13—Baffle

[0029] 20—Telescopic rod 21—Outer rod 22—Inner rod 23—Fixing ring 231—Retaining ring 24—Washer

[0030] 25—Slip ring; 30—Connecting mechanism; 31—First connecting part; 311—First connecting plate

[0031] 3111—Matching pipe; 3112—Through hole; 3113—First arc plate; 3114—Second arc plate

[0032] 3115—Snap-on; 3116—Mounting slot; 3117—Limiting slot; 3118—Connecting pipe

[0033] 312—Second connecting plate; 32—Second connecting part; 321—First fixing plate; 322—Snap fastener.

[0034] 323—Reinforcing component; 324—Snap-on three; 325—Auxiliary block; 326—Snap-on four

[0035] 33—Second fixing plate; 34—Matching block; 40—Base; 41—Housing; 411—Pre-drilled hole

[0036] 412—Limiting plate; 42—Rotating disk; 421—Matching plate; 43—Rotating groove; 44—Drive disk. Detailed Implementation

[0037] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0038] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 the embodiments of this utility model 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, they should not be construed as limitations on this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0041] In one embodiment of this utility model, such as Figure 1As shown, a folding fan is provided, including a fan body 10, a telescopic rod 20, a connecting mechanism 30, and a base 40. The fan body 10 is the core component for air delivery. The fan body 10 is rotatably connected to the telescopic rod 20 through the connecting mechanism 30. The connecting mechanism 30 serves as a mechanical connection between the fan body 10 and the telescopic rod 20, and also provides multi-angle adjustment for the fan body 10, allowing it to rotate relative to the telescopic rod 20 to adjust the pitch of the air delivery direction. It also allows the fan body 10 to rotate relative to the connecting mechanism 30. The telescopic rod 20 supports the fan body 10 and provides adjustment... The height of the fan body 10 is determined by the top of the telescopic rod 20, which is connected to the fan body 10 via a connecting mechanism 30. The bottom of the telescopic rod 20 is slidably connected to the base 40. When the telescopic rod 20 extends out of the base 40, it can rotate relative to the base 40. This allows the telescopic rod 20 to change the height of the fan body 10 by its own extension and contraction, and also to adjust its position and angle by sliding and rotating relative to the base 40. The base 40 provides storage space and movement guidance for the telescopic rod 20 through its shell structure. The coordinated action of these components solves the problems of insufficient aesthetics and flexibility in existing folding fans.

[0042] like Figure 1 , 2 As shown, the fan body 10 includes a back plate 11, a mounting hole 12, and a baffle 13. The back plate 11 is disposed on the back of the fan body 10, and the mounting hole 12 is disposed at the edge of the back plate 11. The mounting hole 12 is a round hole and serves to connect the connecting mechanism 30 to the fan body 10.

[0043] The mounting hole 12 is provided with a mating groove 121 extending along the depth direction of the mounting hole 12. The mating groove 121 serves to cooperate with the connecting mechanism 30 and assist the fan body 10 to return to the initial position of the folded state.

[0044] like Figure 3 As shown, the baffle 13 is located above the mounting hole 12, and a gap is provided between the baffle 13 and the mounting hole 12 to allow the connecting mechanism 30 to be inserted into the mounting hole 12. The side of the baffle 13 adjacent to the connecting mechanism 30 is provided with a limiting ring protruding from the baffle 13. The limiting ring is a semi-circular ring, and the top surface of the ring is adjacent to the end face of the connecting mechanism 30 that is inserted into the mounting hole 12.

[0045] The telescopic rod 20 includes an outer rod 21, an inner rod 22, a fixing ring 23, a retaining ring 231, a washer 24, and a slip ring 25. The telescopic rod 20 is a retractable support component, consisting of an inner rod 22 nested within an outer rod 21. The inner rod 22 can slide relative to the outer rod 21 along its axial direction. The overall length of the telescopic rod 20 can be adjusted through the telescopic cooperation of the two, thereby changing the height of the fan body 10 to adapt to the usage needs of different scenarios.

[0046] The fixing ring 23 is fixedly mounted vertically to the top of the inner rod 22. The fixing ring 23 is cylindrical. One end of the connecting mechanism 30 is disposed in the fixing ring 23. A retaining ring 231 protruding circumferentially is provided in the middle position of the inner side of the fixing ring 23.

[0047] The fixed ring 23 is provided with a washer 24, which is made of a flexible material such as silicone or rubber. The washer 24 is located on both sides of the retaining ring 231, and the retaining ring 231 provides axial restraint to the washer 24. The washer 24 provides moderate damping when the connecting mechanism 30 rotates relative to the fixed ring 23, ensuring smooth rotation adjustment, and at the same time, it allows the connecting mechanism 30 to be stably positioned at any angle, avoiding angular displacement due to vibration after adjustment.

[0048] The slip ring 25 is fixedly sleeved on the bottom of the outer rod 21, and limit protrusions are provided on both sides of the slip ring 25.

[0049] The connecting mechanism 30 is a connecting and adjusting component between the fan body 10 and the telescopic rod 20, including a first connecting part 31 and a second connecting part 32.

[0050] like Figure 1 As shown, the first connecting part 31 is disposed in the fixing ring 23 of the telescopic rod 20 and can rotate relative to the fixing ring 23, thereby realizing the adjustment of the opening and closing angle of the fan body 10 relative to the telescopic rod 20; the second connecting part 32 is connected to the mounting hole 12 of the fan body 10, so that the fan body 10 can rotate relative to the connecting mechanism 30. The design of the structural features of the connecting mechanism 30 and the connection method between the telescopic rod 20 and the fan body 10 realize the flexible adjustment of the fan body 10 in multiple dimensions.

[0051] Specifically, such as Figure 4 , 5 As shown, the first connecting part 31 includes a first connecting plate 311 and a second connecting plate 312 symmetrically arranged on both sides of the fixing ring 23. The two have the same structure and are interlocked.

[0052] The first connecting plate 311 has a mating tube 3111 on its side adjacent to the fixing ring 23. The mating tube 3111 is a circular tube structure and is perpendicular to the first connecting plate 311. The outer diameter of the mating tube 3111 is adapted to the diameter of the washer 24 inside the fixing ring 23. The mating tube 3111 is inserted into the washer 24 to form a rotatable connection with the fixing ring 23. Through contact with the washer 24, the mating tube 3111 obtains damping support during rotation, ensuring the stability of the angle adjustment of the connecting mechanism 30 relative to the fixing ring.

[0053] The mating tube 3111 has a through hole 3112 on its wall, which extends axially through the wall and divides the mating tube 3111 into a first arc plate 3113 and a second arc plate 3114. This structure reduces the weight of the component while enhancing the elastic deformation capability of the mating tube 3111, making its fit with the washer 24 tighter and improving the damping effect. At the same time, the through hole 3112 allows the wire harness to pass through.

[0054] The first arc plate 3113 is provided with a buckle 3115, a mounting groove 3116 and a limiting groove 3117. The buckle 3115 is located at the end of the first arc plate 3113 away from the first connecting plate 311, and the buckle 3115 protrudes outward along the thickness direction of the first arc plate 3113. The buckle 3115 is an arc-shaped plate coaxially arranged with the first arc plate 3113. The mounting groove 3116 is arranged adjacent to the buckle 3115 and extends through the inner side of the first arc plate 3113 along the thickness direction of the first arc plate 3113. The limiting groove 3117 is located at the end where the first arc plate 3113 connects to the first connecting plate 3111 and extends through the first arc plate 3113. The limiting groove 3117 communicates with the mounting groove 3116.

[0055] The second arc plate 3114 is symmetrical to the first arc plate 3113 in structure. It is also provided with a buckle 3115, a mounting groove 3116 and a limiting groove 3117. The buckle 3115 of the second arc plate 3114 is arranged adjacent to the mounting groove 3116 of the first arc plate 3113.

[0056] Since the first connecting plate 311 and the second connecting plate 312 have the same structure and are symmetrically arranged, when the mating tube 3111 on the first connecting plate 311 and the second connecting plate 312 is inserted into the fixing ring 23, the first buckle 3115 in the first arc plate 3113 on the first connecting plate 311 passes through the mounting groove 3116 in the second arc plate 3114 on the second connecting plate 312 and enters the limiting groove 3117 on the second arc plate 3114 in the second connecting plate 312; the first buckle 3115 in the second arc plate 3114 on the first connecting plate 311 passes through the second connecting plate 311... The mounting groove 3116 in the first arc plate 3113 on the second connecting plate 312 enters the limiting groove 3117 on the first arc plate 3113 in the second connecting plate 312; at the same time, the buckle 3115 on the second connecting plate 312 also enters the corresponding limiting groove 3117 in the first connecting plate 311, realizing the connection between the first connecting plate 311 and the second connecting plate 312. Meanwhile, the first arc plate 311 and the first arc plate 3113 and the second arc plate 3114 in the second connecting plate 312 form a cylinder, which cooperates with the fixing ring 23 to realize the rotation of the first connecting part 31 relative to the fixing ring 23.

[0057] The first connecting plate 311 also includes a connecting pipe 3118, which is fixedly mounted on the first connecting plate 311 and located outside the fixing ring 23. The height of the connecting pipe 3118 is the same as the height of the mating pipe 3111. The second connecting plate 312 is also provided with a connecting pipe 3118, and a screw is provided in the connecting pipe 3118. The screw fixes the first connecting plate 311 and the second connecting plate 312 together through the connecting pipe 3118 on the first connecting plate 311 and the second connecting plate 312, further enhancing the connection strength between the first connecting plate 311 and the second connecting plate 312.

[0058] The first connecting plate 311 and the second connecting plate 312 are inserted into the fixing ring 23 and rotate in contact with the washer 24 inside the fixing ring 23, providing a structural basis for the pitch adjustment of the fan body 10. At the same time, the structural design of the first connecting plate 311 and the second connecting plate 312 facilitates assembly, and the same structure results in lower production costs.

[0059] like Figure 4 , 5 As shown in Figures 6 and 7, the second connecting part 32 includes a first fixing plate 321 and a second fixing plate 33.

[0060] The second connecting part 32 includes a first fixing plate 321 and a second fixing plate 33. The first fixing plate 321 is perpendicular to the first connecting plate 311 and is integrally formed, and the second fixing plate 33 is perpendicular to the second connecting plate 312 and is integrally formed; when the first connecting plate 311 and the second connecting plate 312 are engaged and connected, the first fixing plate 321 and the second fixing plate 33 come into contact.

[0061] The first fixing plate 321 is provided with a second buckle 322, a third buckle 324 and a fourth buckle 326 on the side away from the first connecting plate 311. The second buckle 322, the third buckle 324 and the fourth buckle 326 are evenly distributed along the surface of the first fixing plate 321 and protrude perpendicularly to the first fixing plate 321 in the direction away from the fixing ring 23. The outer surface contours of the second buckle 322, the third buckle 324 and the fourth buckle 326 are connected to form a semi-circle.

[0062] The second fixing plate 33 has the same structure as the first fixing plate 321, and is also provided with buckle 2 322, buckle 324 and buckle 4 326. When the first fixing plate 321 and the second fixing plate 33 are attached, the buckles 2 322, buckle 324 and buckle 4 326 on the first fixing plate 321 and the second fixing plate 33 together form a circular outline. The outer diameter of the circular outline is adapted to the diameter of the mounting hole 12 of the fan body 10. The buckles on the first fixing plate 321 and the second fixing plate 33 are inserted into the mounting hole 12, so that the second connecting part 32 and the fan body 10 form a rotatable connection, ensuring the degree of freedom of rotation of the fan body 10 relative to the second connecting part 32. At the same time, the fan body 10 and the connecting mechanism 30 are rotatably connected by the cooperation and limiting of multiple buckles and mounting holes 12.

[0063] The first fixing plate 321 is also provided with a reinforcing member 323 and an auxiliary block 325. The reinforcing member 323 is located inside the arc formed by the connection of the outer surfaces of the second buckle 322 and the third buckle 324, and the reinforcing member 323 is tangent to the arc. The reinforcing member 323 is provided with a limiting rod. The limiting rod is a screw and is fixedly connected to the reinforcing member 323. The nut part of the screw is set in the ring on the baffle 13. When the fan body 10 rotates, the ring rotates relative to the nut. After the fan body 10 rotates 180 degrees, the end of the ring contacts the nut, and the fan body 10 is restricted from rotating by the screw. The auxiliary block 325 is located inside the arc formed by the connection of the outer surfaces of the third buckle 324 and the fourth buckle 326, and the auxiliary block 325 is tangent to the arc. The reinforcement 323 and auxiliary block 325 can prevent the second buckle 322, the third buckle 324, and the fourth buckle 326 from breaking due to excessive deformation when the fan body 10 rotates relative to the connecting mechanism 30.

[0064] The first fixing plate 321 and the second fixing plate 33 are also provided with arc-shaped mating blocks 34 on their sides. The arc-shaped mating blocks 34 extend along the end faces of the first connecting plate 311 and the second connecting plate 312 away from the fixing ring 23. The mating blocks 34 play the role of assisting in fixing the buckle 324.

[0065] The outer surface of the buckle 324 is provided with an arc-shaped protrusion extending along the length of the buckle 324. The arc-shaped protrusion cooperates with the mating groove 121 to help the fan body 10 return to its initial position in the folded state.

[0066] like Figure 7 , 8 As shown, the base 40 is a support and storage component for the folding fan. The base 40 includes a housing 41, a rotating disk 42 and a drive disk 44. A cavity is formed between the housing 41 and the rotating disk 42 to store the telescopic rod 20.

[0067] The housing 41 is a cylinder with an opening facing downwards, and the internal space of the housing 41 is used to house the telescopic rod 20. The side wall and top surface of the housing 41 are provided with a pre-reserved hole 411 that is connected. The shape of the pre-reserved hole 411 is adapted to the cross-section of the outer rod 21 of the telescopic rod 20, so that the telescopic rod 20 can be retracted into the housing 41 when stored, or extended out of the housing 41 when in use, realizing the telescopic channel function of the telescopic rod 20. The pre-reserved hole 411 located on the top surface of the housing 41 forms an interference fit with the outer rod 21, and the middle part of the pre-reserved hole 411 located on the top surface of the housing 41 is arc-shaped. The diameter of the arc is adapted to the diameter of the outer rod 21. When the telescopic rod 20 extends out of the base 40 and is vertically positioned, the outer rod 21 is engaged in the pre-reserved hole 411. The interference fit realizes a stable connection between the telescopic rod 20 and the base 40, preventing shaking during use.

[0068] The housing 41 has symmetrically arranged limiting plates 412 extending along the diameter of the housing 41 on both sides of the reserved hole 411. The distance between the two limiting plates 412 is adapted to the width of the outer rod 21 of the telescopic rod 20. The telescopic rod 20 is located between the two limiting plates 412. The setting of the two limiting plates 412 inside the housing 41 avoids the aesthetic problem caused by the exposed storage hole of the traditional base.

[0069] The rotating disk 42 is located below the housing 41. The rotating disk 42 is provided with mating plates 421 that correspond one-to-one with the housing limiting plate 412. A gap is formed between the limiting plate 412 and the mating plate 421. The width of the gap is adapted to the thickness of the protrusions on both sides of the slip ring 25. The protrusions in the slip ring 25 are located in the gap and can slide along the gap, so that the telescopic rod 20 can extend and retract smoothly relative to the base 40.

[0070] A rotating groove 43 is provided between the housing 41 and the rotating disk 42. The rotating groove 43 is located at a position corresponding to the reserved hole 411, and the inner diameter of the rotating groove 43 is adapted to the maximum outer diameter of the slip ring 25. When the telescopic rod 20 slides relative to the base 40 and fully extends out of the reserved hole 411, the slip ring 25 enters the rotating groove 43 through the gap between the limiting plate and the mating plate. At this time, the slip ring 25 can rotate 90° within the rotating groove 43, making the telescopic rod 20 perpendicular to the base 40.

[0071] The drive disk 44 is located below the rotating disk 42 and is connected to the rotating disk 42 by gear meshing. The drive disk 44 generates rotational power through a motor drive, which drives the rotating disk 42 to rotate synchronously through gear transmission, thereby causing the telescopic rod 20 and the fan body 10 to rotate as a whole.

[0072] When the fan is in the retracted state, the telescopic rod 20 is located in the base 40, the fan body 10 is folded relative to the telescopic rod 20 through the connecting mechanism 30, and the back plate 11 is attached to the top surface of the base 40. At this time, the mounting hole 12 of the fan body 10 is located above the reserved hole 411 of the base 40. The housing 41 of the base 40 has no exposed storage hole. It only cooperates with the telescopic rod 20 through the base 40, the reserved hole 411, and maintains the integrity of the appearance.

[0073] The working principle of this utility model is as follows: When unfolded, the telescopic rod 20 is pulled away from the base 40. The protrusion of the slip ring 25 slides along the gap between the limiting plate 412 and the mating plate 421, causing the telescopic rod 20 to extend out of the reserved hole 411 of the housing 41. When the telescopic rod 20 is fully extended, the slip ring 25 enters the rotating groove 43 between the housing 41 and the rotating disk 42. At this time, the slip ring 25 rotates 90° in the rotating groove 43, causing the entire telescopic rod 20 to rotate from a horizontal state to a position perpendicular to the base 40. Since the outer rod 21 is interference-fitted with the reserved hole 411 of the housing 41, after rotating to a vertical state, the outer rod 21 is engaged in the housing 41, realizing the vertical positioning of the telescopic rod 20 and providing stable support for the fan body 10. The overall length of the telescopic rod 20 can be adjusted by the axial sliding of the inner rod 22 relative to the outer rod 21.

[0074] The fan body 10 is connected to the fixing ring 23 of the telescopic rod 20 via the first connecting part 31 of the connecting mechanism 30. The mating tube 3111 of the first connecting part 31 is inserted into the washer 24 of the fixing ring 23 and can rotate relative to the fixing ring 23. During rotation, the mating tube 3111 and the flexible washer 24 generate damping through friction, which ensures smooth rotation and stable positioning at any angle, thereby realizing the adjustment of the opening and closing angle of the fan body 10 relative to the telescopic rod 20, that is, the adjustment of the air delivery angle in the pitch direction.

[0075] The mounting hole 12 of the fan body 10 engages with the second connecting part 32 of the connecting mechanism 30. The first fixing plate 321 and the buckle on the second fixing plate 33 of the second connecting part 32 together form a circular outline, which forms a rotational engagement with the mounting hole 12, so that the fan body 10 can rotate 180° relative to the connecting mechanism 30 to adjust the height of the fan body 10 relative to the telescopic rod 20.

[0076] The fan body 10 rotates to its initial position and folds to fit the telescopic rod 20. The inner rod 22 retracts into the outer rod 21. The telescopic rod 20 rotates 90° in the opposite direction to the base 40 and finally slides into the housing 41 along the gap between the limiting plate and the mating plate to complete the storage.

[0077] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A foldable fan characterized by: The device includes a fan body, a telescopic rod, a connecting mechanism, and a base. The fan body is rotatably connected to the telescopic rod via the connecting mechanism to adjust the opening angle of the fan body relative to the telescopic rod. The telescopic rod has a slip ring at its bottom and is slidably disposed in the base relative to it. The base includes a housing with pre-drilled holes on its side walls and top surface for the telescopic rod to extend from the base. The base also has a rotating groove at the location of the pre-drilled holes. When the telescopic rod slides out of the pre-drilled holes relative to the base, the slip ring is located in the rotating groove and can rotate within the groove, making the telescopic rod perpendicular to the base.

2. The fan of claim 1, wherein: The housing has a pre-drilled hole on both sides with a limiting plate extending along the diameter of the housing, and the telescopic rod is located between the two limiting plates. The base also includes a rotating disk located below the housing. The rotating disk has a mating plate corresponding to the limiting plate. A gap is formed between the limiting plate and the mating plate. The slip ring is located in the gap so that the telescopic rod slides relative to the base.

3. The fan of claim 1 wherein: The telescopic rod is interference-fitted with the reserved hole in the housing. When the slip ring rotates in the rotating groove to make the telescopic rod perpendicular to the base, the telescopic rod is engaged in the housing to maintain the telescopic rod perpendicular to the base.

4. The fan of claim 1 wherein: The telescopic rod also includes an outer rod, an inner rod, a fixed ring, a retaining ring, and washers. The slip ring is fixedly sleeved on the bottom of the outer rod, and the inner rod is sleeved in the outer rod and can extend and retract relative to the outer rod. The fixed ring is located at the top of the inner rod, and a retaining ring is provided inside the fixed ring along the circumference of the fixed ring. The washers are located in the fixed ring and on both sides of the retaining ring. The washers are flexible washers and provide damping when the connecting mechanism rotates relative to the telescopic rod.

5. A fan as claimed in claim 4 wherein: The connecting mechanism includes a first connecting part and a second connecting part. The first connecting part is rotatably disposed in a fixed ring. The second connecting part is rotatably connected to the fan body so that the fan body rotates relative to the connecting mechanism.

6. The fan of claim 1 wherein: The fan body includes a back plate, and a circular mounting hole is provided at the edge of the back plate. When the fan is in a folded state, the mounting hole is located above the reserved hole.

7. The fan of claim 5 wherein: The first connecting part includes a first connecting plate and a second connecting plate disposed on both sides of the fixing ring. The first connecting plate is provided with a mating tube, which is inserted into the washer. The mating tube has a through hole in the middle that divides the mating tube into two parts: a first arc plate and a second arc plate. The first arc plate is provided with a first buckle, a mounting groove, and a limiting groove. The first buckle extends along the thickness direction of the first arc plate. The mounting groove is adjacent to the first buckle and extends through the inner side of the first arc plate along the thickness direction. The limiting groove is disposed at the end where the first arc plate connects to the first connecting plate and is connected to the mounting groove. The second arc plate is also provided with a first buckle, a mounting groove, and a limiting groove. The first buckle on the second arc plate is adjacent to the mounting groove on the first arc plate. The second connecting plate has the same structure as the first connecting plate.

8. The fan of claim 5 wherein: The second connecting part includes a first fixing plate perpendicular to the first connecting plate and a second fixing plate perpendicular to the second connecting plate. The first fixing plate and the second fixing plate are in contact with each other. The first fixing plate is provided with a plurality of buckles perpendicular to the first fixing plate. The second fixing plate has the same structure as the first fixing plate. After the outer surfaces of the buckles on the first fixing plate and the second fixing plate are connected, the overall outline is circular. The second connecting part is engaged in the mounting hole by a plurality of buckles, so that the connecting mechanism is connected to the fan body and the fan body rotates relative to the connecting mechanism.

9. The fan of claim 8 wherein: The second connecting part also includes a reinforcing member and an auxiliary block that are perpendicular to the first fixing plate and the second fixing plate. The outer contours of the reinforcing member, the auxiliary block, the first fixing plate, and the buckles on the second fixing plate are circular.

10. The fan of claim 1 wherein: The connecting mechanism is provided with a limiting rod at one end adjacent to the fan body. The fan body is provided with a limiting ring fixed in the fan body at the corresponding position of the limiting rod. The limiting rod is inserted into the limiting ring to limit the rotation angle of the fan body around the connecting mechanism and prevent the user from excessively rotating the fan body, which could damage the power cord.

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