Table fan

Abstract

The application relates to a table fan, which comprises a base, a support and a fan head connected with the support through a connecting piece. The fan head comprises a connecting ring, the connecting ring has a containing cavity, and a mounting hole communicating with the containing cavity is arranged in the side wall of the connecting ring. The support is correspondingly provided with an assembly hole. The connecting piece comprises a shaft sleeve, a positioning piece and a clamping piece. One end of the shaft sleeve is inserted into the assembly hole, the other end passes through the mounting hole and is rotatably arranged in the containing cavity. The positioning piece is arranged in the containing cavity and is provided with a plurality of positioning holes arranged along an arc track. The clamping piece is telescopically arranged in the shaft sleeve and faces the positioning piece. The clamping piece is clamped into any positioning hole to limit the rotating angle of the fan head around the axis of the shaft sleeve. Through the assembly of fixing the shaft sleeve through the support, rotating the positioning piece through the fan head, and elastically telescoping and clamping the clamping piece into the positioning hole, the angle of the fan head can be adjusted and stably positioned, and the convenience of adjustment and the stability of use are considered.

Description

Technical Field

[0001] This application relates to the field of household appliance technology, and more particularly to a table fan. Background Technology

[0002] As a commonly used air conditioning device in daily home and office settings, the core requirement of a table fan is to achieve airflow coverage of different ranges by flexibly adjusting the air delivery angle of the fan head, so as to adapt to the diverse usage scenarios of users (such as single person blowing air at close range, multi-person area air delivery, etc.).

[0003] Existing desk fans typically connect the fan head to the bracket via a simple pivot structure. Users can manually adjust the pitch angle by moving the fan head and fix the angle by tightening or loosening the nut on the pivot. Some desk fans directly connect the fan head to the bracket with bolts, requiring manual loosening of the bolts, rotation of the fan head to the target angle, and tightening of the bolts to secure it each time the angle is adjusted. This type of structure is cumbersome, requires tools (such as screwdrivers), and frequent tightening can easily cause the bolts to strip. Over time, the positioning stability decreases significantly, and it does not allow for quick, one-handed operation. Furthermore, the internal core components of existing angle adjustment mechanisms often lack effective protective designs, allowing external dust, hair, and other foreign objects to easily enter the adjustment mechanism, causing component jamming or accelerated wear. Simultaneously, the structural design of the positioning components is often not precisely aligned with the axis of the support shaft, easily leading to misalignment of the positioning hole trajectory. This causes misalignment of the latches and slots during adjustment, further reducing positioning accuracy and operational feel.

[0004] Therefore, the existing angle adjustment structure of the table fan still has problems such as insufficient ease of operation, low positioning accuracy, poor long-term stability, and weak protection. Utility Model Content

[0005] This application provides a table fan that achieves adjustable angle and stable positioning of the fan head by means of a bracket fixing shaft kit, a fan head driving the positioning component to rotate, and a locking component elastically extending and retracting into the positioning hole, thus taking into account both the convenience of adjustment and the stability of use.

[0006] Therefore, this application provides a table fan, including a base, a support, and a fan head connected to the support via a connector. The fan head includes a connecting ring, the connecting ring having a receiving cavity, and its side wall having a mounting hole communicating with the receiving cavity; the support is correspondingly provided with an assembly hole; the connector includes: A shaft assembly, one end of which is inserted into the mounting hole, and the other end passes through the mounting hole and is rotatably disposed within the receiving cavity; A positioning element is disposed within the receiving cavity and has multiple positioning holes arranged along an arc trajectory; A locking component, which is retractable and mounted on the shaft assembly, and faces the positioning component; The locking member engages with any of the positioning holes to limit the rotation angle of the fan head around the axis of the shaft assembly.

[0007] As a preferred embodiment, the side wall of the shaft assembly has a mounting groove corresponding to the position of the positioning member, the locking member is accommodated in the mounting groove, and part of the locking member is exposed outside the mounting groove.

[0008] As a preferred embodiment, a spring is connected to the end of the locking member that is opposite to the positioning member, and the spring is located within the mounting groove.

[0009] As a preferred embodiment, the side wall of the connecting ring has two mounting holes, and the two ends of the bracket are respectively provided with two assembly holes; The number of shaft kits is two, and each shaft kit is inserted into the corresponding mounting hole and assembly hole to rotatably connect the fan head relative to the bracket.

[0010] As a preferred embodiment, the connecting ring includes a first ring portion and a second ring portion, which together form the receiving cavity; The first ring portion has a first step at the end opposite to the second ring portion, and the first step is detachably connected to the rear mesh assembly; The second ring portion has a second step at the end opposite to the first ring portion, and the second step is detachably connected to the front mesh assembly.

[0011] As a preferred embodiment, the shaft assembly includes a first shaft portion and a second shaft portion; One end of the first shaft is inserted into the assembly hole, and the other end passes through the mounting hole and is connected to the end of the second shaft near the first shaft. The second shaft portion is located in the receiving cavity, and the second shaft portion is provided with the mounting groove; the end of the second shaft portion opposite to the first shaft portion is spaced apart from the second ring portion.

[0012] As a preferred embodiment, the mounting hole extends through the first ring portion, and a protrusion is formed on the side of the first ring portion facing the second ring portion. The protrusion is located within the receiving cavity and cooperates with the outer peripheral surface of the second shaft portion to form a cavity for accommodating the positioning member.

[0013] As a preferred embodiment, the front mesh assembly and the rear mesh assembly enclose a mounting cavity, and a motor assembly is provided inside the mounting cavity, with the output end of the motor assembly connected to a fan blade assembly.

[0014] As a preferred embodiment, the front mesh assembly and the rear mesh assembly enclose a mounting cavity, and a motor assembly is provided inside the mounting cavity. The output end of the motor assembly is connected to a fan blade assembly.

[0015] As a preferred embodiment, the positioning element is an arc-shaped sheet structure, and the center of the arc trajectory along which the plurality of positioning holes are located coincides with the axis of the shaft assembly.

[0016] The beneficial effects of this application are: The table fan includes a base, a support, and a fan head connected to the support via a connector. The fan head includes a connecting ring with a receiving cavity and a mounting hole communicating with the receiving cavity on its side wall. The support has a corresponding assembly hole. The connector includes a shaft assembly, a positioning member, and a locking member. One end of the shaft assembly is inserted into the assembly hole, and the other end passes through the mounting hole and is rotatably disposed within the receiving cavity. The positioning member is disposed within the receiving cavity and has multiple positioning holes arranged along an arc trajectory. The locking member is telescopically disposed on the shaft assembly and faces the positioning member. The locking member engages with any of the positioning holes to limit the rotation angle of the fan head around the axis of the shaft assembly.

[0017] The assembly of the bracket fixing shaft kit, the fan head driving the positioning component to rotate, and the locking component elastically extending and retracting into the positioning hole achieves adjustable angle and stable positioning of the fan head, taking into account both the convenience of adjustment and the stability of use. Attached Figure Description

[0018] 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, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of a table fan according to this application; Figure 2 for Figure 1 Cross-sectional view; Figure 3 for Figure 2 Cross-sectional view of AA in the middle; Figure 4 for Figure 3 A magnified view of part B in the image; Figure 5 for Figure 1 A schematic diagram of the middle connector.

[0020] Explanation of reference numerals in the attached figures: 1. Base; 2. Bracket; 21. Assembly hole; 3. Connector; 31. Shaft assembly; 311. First shaft part; 312. Second shaft part; 3121. Mounting groove; 32. Positioning part; 321. Positioning hole; 33. Locking part; 34. Spring part; 4. Connecting ring; 41. First ring part; 411. Mounting hole; 412. Protrusion; 42. Second ring part; 5. Front mesh assembly; 6. Rear mesh assembly; 7. Support part; 8. Fan blade assembly; 9. Motor assembly. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0023] like Figures 1 to 5 As shown in the figure, a table fan provided in this application embodiment includes a base 1, a support 2, and a fan head connected to the support 2 via a connector 3. The fan head includes a connecting ring 4, which has a receiving cavity, and its side wall has a mounting hole 411 communicating with the receiving cavity. The support 2 is provided with a corresponding assembly hole 21. The connector 3 includes a shaft assembly 31, a positioning member 32, and a locking member 33. One end of the shaft assembly 31 is inserted into the assembly hole 21. Preferably, the shaft assembly 31 is locked and fixed to the support 2 by a threaded fastener. The other end passes through the mounting hole 411 and is rotatably disposed in the receiving cavity. The positioning member 32 is disposed in the receiving cavity and has a plurality of positioning holes 321 arranged along an arc trajectory. The locking member 33 is retractably disposed on the shaft assembly 31 and faces the positioning member 32. Preferably, the locking member 33 is a plastic steel ball or a metal ball. The locking member 33 can be engaged in any of the positioning holes 321 to provide stable positioning at multiple levels, thereby limiting the different rotation angles of the fan head around the axis of the shaft assembly 31.

[0024] The base 1 serves as the supporting foundation for the entire table fan and is assembled with the bracket 2 using a fixed structure (such as screw connection or snap-fit). The bracket 2 is fixed vertically or at an angle to the base 1, providing a supporting carrier for the fan head. The fan head (including core components such as fan blades and motor) is fixedly connected to the connecting ring 4 by welding or screw locking. The connecting ring 4 serves as the rotating joint of the fan head, and its internal cavity provides installation space for the positioning structure. The mounting hole 411 on the side wall serves as the through-hole for the shaft assembly 31. Specifically, one end of the shaft assembly 31 is tightly inserted into the mounting hole 21 of the bracket 2 by interference fit or screw fixing, ensuring that the shaft assembly 31 is completely fixed relative to the bracket 2. The other end extends through the mounting hole 411 of the connecting ring 4 and into the mounting hole 21. The shaft assembly 31 is housed within the cavity and is either clearance-fitted to the mounting hole 411 of the connecting ring 4 or connected via a bearing, allowing the connecting ring 4 and the fan head to rotate freely around the axis of the shaft assembly 31. The positioning member 32 is fixed within the cavity of the connecting ring 4 and rotates synchronously with the connecting ring 4 (fan head). Multiple positioning holes 321 on its surface are arranged along an arc trajectory centered on the axis of the shaft assembly 31, ensuring that the shaft assembly 31 always makes a circular motion around the multiple positioning holes 321 when the fan head rotates. The locking member 33 is telescopically mounted on the end of the portion of the shaft assembly 31 located within the cavity via an elastic structure (such as a spring), with its telescopic direction facing the positioning hole 321 of the positioning member 32. Under normal conditions, the locking member 33 extends out of the shaft assembly 31 under the action of elastic force and can be locked into the positioning hole 321.

[0025] When the fan head angle needs to be adjusted, an external force is applied to push the fan head, causing the connecting ring 4 to drive the positioning component 32 to rotate around the axis of the shaft assembly 31. At this time, the edge of the positioning hole 321 will squeeze the locking component 33, forcing the locking component 33 to overcome the elastic force, retract, and disengage from the current positioning hole 321. As the fan head rotates, the next positioning hole 321 on the positioning component 32 moves to the front of the locking component 33. Under the action of the elastic force, the locking component 33 automatically extends and locks into the new positioning hole 321, forming a rigid limit and preventing the fan head from continuing to rotate, thereby fixing the current angle. Since the positioning holes 321 on the positioning component 32 are distributed in multiple positions along an arc trajectory, the precise positioning of the fan head at multiple preset angles can be achieved through the cooperation of the locking component 33 with different positioning holes 321, meeting the needs of different air delivery directions.

[0026] Thus, by using the bracket 2 to fix the shaft assembly 31, the fan head to drive the positioning component 32 to rotate, and the locking component 33 to elastically extend and retract into the positioning hole 321, the angle of the fan head can be adjusted and the positioning can be stably positioned, taking into account both the convenience of adjustment and the stability of use.

[0027] In this embodiment, as Figure 3As shown, the side wall of the shaft assembly 31 has a radial mounting groove 3121 corresponding to the position of the positioning member 32. The locking member 33 is housed in the mounting groove 3121, and part of the locking member 33 is exposed outside the mounting groove 3121.

[0028] The mounting groove 3121 of the positioning shaft assembly 31 is radially opened on the side wall of the mounting groove 3121, that is, it extends along the radius of the shaft assembly 31. Its position precisely corresponds to the multiple positioning holes 321 on the positioning member 32. This makes the axis of the mounting groove 3121 radially aligned with the distribution center of the positioning holes 321 (axis of the shaft assembly 31). This ensures that the extension and retraction direction of the locking member 33 is always perpendicular to the positioning hole 321 of the positioning member 32, so that it is always aligned with the arc trajectory of the positioning hole 321. This ensures that after each rotation and adjustment, the locking member 33 can accurately fall into the positioning hole 321, providing a basis for the precise cooperation between the two.

[0029] On the one hand, the mounting groove 3121 provides radial guidance for the locking member 33, restricting it to extend and retract only radially to avoid offset or skew. On the other hand, the inner wall of the mounting groove 3121 can serve as a travel limit for the extension and retraction of the locking member 33, preventing it from overextending or retracting. For example, it can prevent the locking member 33 from completely disengaging from the mounting groove 3121 or from getting stuck when retracted. Under the thrust of the elastic member, the locking member 33 is partially exposed outside the mounting groove 3121. This exposed part of the structure can then extend into the positioning hole 321 of the positioning member 32, forming a locking lock. When the fan head rotates and the edge of the positioning hole 321 presses against the locking member 33, the locking member 33 is compressed by the spring and retracts into the mounting groove 3121. The exposed part then fully enters the mounting groove 3121, achieving unlocking and disengagement.

[0030] Thus, the radial mounting groove 3121 of the shaft assembly 31 further strengthens the synergistic mechanism of rotation adjustment and elastic locking by positioning, guiding and limiting the locking component 33, making the angle positioning of the fan head more accurate, the structure more durable and the operation feel better.

[0031] In this embodiment, a spring 34 is connected to the end of the locking member 33 facing away from the positioning member 32, and the spring 34 is located within the mounting groove 3121. One end of the spring 34 is fixedly connected to or directly abuts against the end face of the locking member 33 facing away from the positioning member 32, while the other end abuts against the bottom of the mounting groove 3121, i.e., the inner wall of the end of the mounting groove 3121 furthest from the positioning member 32. Preferably, the spring 34 is typically a compression spring.

[0032] Since the mounting groove 3121 is radially opened along the shaft assembly 31, the spring 34 is naturally constrained radially within the mounting groove 3121, forming an axial force chain between the locking member 33, the spring 34, and the bottom of the mounting groove 3121. Specifically, when the fan head is not adjusted by external force, the spring 34 is in a naturally extended or slightly compressed state, and its elastic force is radially directed towards the positioning member 32 and pushes the locking member 33, so that the exposed part of the locking member 33 is stably locked into a certain preset positioning hole 321 of the positioning member 32. At this time, the spring's thrust is converted into pressure between the locking member 33 and the positioning hole 321, forming a rigid limit, preventing the fan head from rotating unexpectedly due to its own weight or slight external force, and ensuring the stability of the angle positioning. When the user rotates the fan head to adjust the angle, the positioning member 32 rotates synchronously with the fan head. The edge of the current positioning hole 321 will press against the exposed part of the locking member 33. At this time, the locking member 33 is forced to contract into the mounting groove 3121, forcing the spring member 34 to be compressed (elastic potential energy stored) until the locking member 33 is completely disengaged from the current positioning hole 321. After this, the fan head can continue to rotate. When the fan head rotates to the next positioning hole 321 and aligns with the locking member 33, the squeezing force of the positioning hole 321 on the locking member 33 disappears. The spring member 34 releases the stored elastic potential energy, pushing the locking member 33 to extend radially along the mounting groove 3121 and re-lock into the new positioning hole 321, completing the reset locking and fixing the new angle.

[0033] Thus, the spring 34, as the power core of the locking component 33, provides precise elastic driving force to achieve angle positioning through its coordinated assembly with the mounting slot 3121 and the locking component 33. It also optimizes the adjustment feel and compensates for wear errors through its own elastic characteristics, making it a key component to ensure the stable and reliable adjustment function of the fan head.

[0034] In this embodiment, the connecting ring 4 includes a first ring portion 41 and a second ring portion 42, which together form the receiving cavity. The assembly connecting ring 4, consisting of the first ring portion 41 and the second ring portion 42, is formed by splicing the first ring portion 41 and the second ring portion 42. The two are connected by snap-fit, screw locking, ultrasonic welding, and other connection structures to form a closed receiving cavity, which completely encloses the core adjustment structure such as the positioning component 32, the locking component 33, and the spring component 34. This effectively isolates external dust, moisture, or foreign objects from entering, preventing these components from failing due to contamination or impact, and ensuring the long-term stability of the angle adjustment function.

[0035] The first ring portion 41 has a first step at the end opposite to the second ring portion 42, and the first step is detachably connected to the rear mesh assembly 6; the second ring has a second step at the end opposite to the first ring portion 41, and the second step is detachably connected to the front mesh assembly 5. Specifically, the first step connecting the first ring portion 41 to the rear mesh assembly 6 is provided at the end opposite to the second ring portion 42 (i.e., the rear end of the connecting ring 4). The step structure is typically a flange or groove extending radially along the end face of the ring portion, and its size matches the edge of the rear mesh assembly 6 (the protective mesh at the rear of the fan, usually fixed to the motor housing). The rear mesh assembly 6 is fixed to the first step via a detachable structure, i.e., a clip is inserted into the step groove, and a screw passes through the step flange to connect to the rear mesh assembly 6, achieving a rigid connection between the rear mesh assembly 6 and the connecting ring 4; the second step and... The second ring 42 of the front mesh assembly 5, which is opposite to the first ring 41 (i.e., the front end of the connecting ring 4), has a second step. Its structural logic is the same as that of the first step. It is used to connect with the front mesh assembly 5 (the protective mesh at the front of the fan, which can be removed separately to clean the fan blades). The edge of the front mesh assembly 5 and the second step are engaged by a detachable structure such as a snap-fit ​​or a rotating lock. This ensures the stable fixation of the front mesh assembly 5 and the connecting ring 4, and also allows the user to remove the front mesh at any time (without tools or with only simple operation) to facilitate cleaning the fan blades or maintaining the internal structure.

[0036] Thus, the double-ring enclosure of the connecting ring 4 solves the problem of installation and protection of the internal adjustment structure, while the step and detachable connection achieve stable fixation and convenient disassembly of the mesh cover. The combination of the two achieves a balance between functional integrity, structural stability and user experience in the fan head.

[0037] In this embodiment, as shown in the figure Figure 5 As shown, the shaft assembly 31 includes a first shaft portion 311 and a second shaft portion 312; preferably, the first shaft portion 311 and the second shaft portion 312 are integrally formed, welded, or threadedly connected; one end of the first shaft portion 311 is inserted into the assembly hole 21, and the other end passes through the mounting hole 411 and is connected to the end of the second shaft portion 312 near the first shaft portion 311; the second shaft portion 312 is located in the receiving cavity, and the second shaft portion 312 is provided with the mounting groove 3121; the end of the second shaft portion 312 facing away from the first shaft portion 311 is spaced apart from the second ring portion 42.

[0038] One end of the first shaft portion 311 is tightly inserted into the mounting hole 21 of the bracket 2 through an interference fit or screw locking, ensuring that the shaft assembly 31 is completely stationary relative to the bracket 2, providing a fixed axial reference for the rotation of the fan head; the other end passes through the mounting hole 411 of the connecting ring 4 and is fixedly connected to the end of the second shaft portion 312 near the first shaft portion 311, forming a continuous shaft structure. Since the first shaft portion 311 passes through the mounting hole 411 of the connecting ring 4, and the two are clearance-fitted or assisted by bearings, the connecting ring 4 and the fan head can rotate freely around the axis of the first shaft portion 311. Therefore, the core function of the first shaft portion 311 is to provide rotational support and axial positioning. The second shaft portion 312 is located entirely within the receiving cavity of the connecting ring 4. Its core function is to serve as a mounting carrier for the locking member 33 and the spring member 34. Specifically, a radial mounting groove 3121 is provided on the second shaft portion 312 to accommodate the locking member 33 and the spring member 34, allowing the locking member 33 to extend and retract radially, forming a locking and unlocking engagement with the positioning member 32 in the receiving cavity as the connecting ring 4 rotates. Furthermore, the second shaft portion 312 is integrated with the first shaft portion 311 and remains stationary relative to the bracket 2 as the first shaft portion 311 remains stationary. Therefore, when the connecting ring 4 drives the positioning member 32 to rotate, the locking member 33 on the second shaft portion 312 can always form a stable radial correspondence with the positioning hole 321 of the positioning member 32, ensuring positioning accuracy. The end of the second shaft portion 312 that is away from the first shaft portion 311 (i.e., the end of the shaft assembly 31) is kept at a distance (non-contact state) from the second ring portion 42 (part of the connecting ring 4), thus avoiding rotational interference and ensuring smooth adjustment. In this way, the separate design of the first shaft portion 311 and the second shaft portion 312 of the shaft assembly 31 further optimizes the rotational stability and adjustment reliability of the fan head.

[0039] In this embodiment, as Figure 3 As shown, the mounting hole 411 passes through the first ring portion 41, and a protrusion 412 is formed on the side of the first ring portion 41 facing the second ring portion 42. The protrusion 412 is located in the receiving cavity and cooperates with the outer peripheral surface of the second shaft portion 312 to form a cavity for accommodating the positioning member 32.

[0040] The mounting hole 411 passes through the first ring portion 41, that is, the first ring portion 41 has a through hole for the first shaft portion 311 of the shaft assembly 31 to pass through. The protrusion 412 is an annular boss structure formed around the edge of the mounting hole 411 on the side of the first ring portion 41 facing the second ring portion 42 (that is, the inner side of the receiving cavity). In other words, the first ring portion 41 is locally thickened or extended at the mounting hole 411, and the direction is towards the inside of the receiving cavity (that is, towards the second ring portion 42). The second shaft portion 312 is located inside the receiving cavity, and its outer peripheral surface is cylindrical. When the first ring portion 41 and the second ring portion 42 are engaged to form the receiving cavity, an annular gap space is formed between the protrusion 412 (ring) on ​​the inner side of the first ring portion 41 and the outer peripheral surface of the second shaft portion 312, which is the cavity for accommodating the positioning member 32. The inner peripheral surface of the protrusion 412 and the outer peripheral surface of the second shaft portion 312 are concentric (with the axis of the shaft assembly 31 as the center), ensuring that the gap space is uniform. The positioning member 32 can be fixed in the cavity by snap, glue or interference fit, ensuring the fitting accuracy between the positioning member 32 and the locking member 33, providing the positioning member 32 with precise installation space and limit, reducing the risk of functional failure due to assembly errors or vibration, while enhancing the structural stability of the connecting ring 4, making the angle adjustment function of the fan head more durable and reliable, and strengthening the fitting stability of the positioning member 32 as the connecting ring 4 rotates and the locking member 33 is relatively stationary.

[0041] In this embodiment, as Figure 2 As shown, the front mesh assembly 5 and the rear mesh assembly 6 enclose a mounting cavity, within which a motor assembly 9 is housed. The output end of the motor assembly 9 is connected to a fan blade assembly 8. The mounting cavity provides independent installation space for the motor assembly 9 and the fan blade assembly 8, preventing external environmental factors (such as dust and foreign objects) from directly intruding into the core components, thus achieving safety protection.

[0042] In this embodiment, as Figure 3 As shown, the side wall of the connecting ring 4 has two mounting holes 411. Preferably, the two mounting holes 411 are usually symmetrically distributed radially along the connecting ring 4, such as one on each side. The two ends of the bracket 2 are provided with two assembly holes 21. There are two shaft kits 31. Each shaft kit 31 is inserted into the corresponding mounting hole 411 and assembly hole 21. That is, one end of the first shaft part 311 of each shaft kit 31 is fixedly inserted into one assembly hole 21 of the bracket 2 by interference fit or screw, and the other end passes through one mounting hole 411 of the connecting ring 4, extends into the receiving cavity and connects with the second shaft part 312 to rotatably connect the fan head relative to the bracket 2.

[0043] The symmetrical structure of the double mounting holes 411, double assembly holes 21, and double shaft kits 31, with the two shaft kits 31 symmetrically distributed around the rotation axis of the fan head, forms a two-point support structure that together suspends the fan head on the bracket 2, restricting the displacement of the fan head in the radial direction (perpendicular to the rotation axis) and ensuring that it always rotates around the fixed axis, further enhancing the stability of the connection between the fan head and the bracket 2 and the smoothness of rotation.

[0044] Preferably, one of the shaft components 31 has a second shaft portion 312 with a mounting groove 3121, a locking member 33, and a spring member 34 (for angular positioning), while the other shaft component 31 serves only as a support shaft (without a locking structure), or both may have locking structures to further enhance positioning stability. Regardless of the method, the symmetrical support of the two shafts ensures more even force distribution on the positioning member 32, preventing deformation of the positioning hole 321 due to unilateral force during single-axis locking, and ensuring a more secure angle lock.

[0045] Thus, by adapting the double mounting holes 411 of the connecting ring 4 to the rigid structure of the double ring (first ring 41, second ring 42), it can withstand the support force of the dual shafts; the double assembly holes 21 of the bracket 2 strengthen the connection strength between the bracket 2 and the base 1, so that the fan head can achieve multi-angle adjustment function while taking into account the stability, durability and smooth operation during operation.

[0046] In this embodiment, the positioning element 32 is an arc-shaped sheet structure, and the center of the arc trajectory along which the plurality of positioning holes 321 are located coincides with the axis of the shaft assembly 31. The combination of the fixed stability of the arc-shaped sheet positioning element 32 and the concentricity of the positioning hole 321 trajectory minimizes the fitting error between the locking element 33 and the positioning hole 321, ensuring precise locking for each angle adjustment. This guarantees the accuracy of angle positioning and the smoothness of adjustment, enabling reliable multi-angle adjustment of the fan head.

[0047] In this embodiment, as Figures 1 to 2 As shown, it also includes a support member 7, whose two ends are respectively fitted onto the two shaft kits 31 and connected to the bracket 2 and the fan head respectively. Preferably, the connecting ring 4 has a groove on the side facing the support member 7. The groove is usually U-shaped or arc-shaped to fit an adult's hand. The groove is located at the top of the connecting ring 4, avoiding the mounting hole 411 on the side wall of the connecting ring 4, and is located in the upper part of the overall center of gravity of the table fan. This helps to maintain the balance of the body when lifting and avoid tilting, which could cause the fan blades to bump.

[0048] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0049] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0050] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a 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 application according to the specific circumstances.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0052] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0053] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A table fan, comprising a base, a support, and a fan head connected to the support via a connector, the fan head including a connecting ring, the connecting ring having a receiving cavity, and its side wall having a mounting hole communicating with the receiving cavity; the support having a corresponding assembly hole; characterized in that, The connector includes: A shaft assembly, one end of which is inserted into the mounting hole, and the other end passes through the mounting hole and is rotatably disposed within the receiving cavity; A positioning element is disposed within the receiving cavity and has multiple positioning holes arranged along an arc trajectory; A locking component, which is retractable and mounted on the shaft assembly, and faces the positioning component; The locking member engages with any of the positioning holes to limit the rotation angle of the fan head around the axis of the shaft assembly.

2. The table fan according to claim 1, characterized in that, The side wall of the shaft assembly has a mounting groove corresponding to the position of the positioning member. The locking member is accommodated in the mounting groove, and part of the locking member is exposed outside the mounting groove.

3. The table fan according to claim 2, characterized in that, A spring is connected to the end of the locking member that is away from the positioning member, and the spring is located in the mounting groove.

4. The table fan according to claim 3, characterized in that, The connecting ring includes a first ring portion and a second ring portion, which together form the receiving cavity. The first ring portion has a first step at the end opposite to the second ring portion, and the first step is detachably connected to the rear mesh assembly; The second ring portion has a second step at the end opposite to the first ring portion, and the second step is detachably connected to the front mesh assembly.

5. The table fan according to claim 4, characterized in that, The shaft assembly includes a first shaft portion and a second shaft portion; One end of the first shaft is inserted into the assembly hole, and the other end passes through the mounting hole and is connected to the end of the second shaft near the first shaft. The second shaft portion is located in the receiving cavity, and the second shaft portion is provided with the mounting groove; the end of the second shaft portion opposite to the first shaft portion is spaced apart from the second ring portion.

6. The table fan according to claim 5, characterized in that, The mounting hole passes through the first ring portion and a protrusion is formed on the side of the first ring portion facing the second ring portion. The protrusion is located in the receiving cavity and cooperates with the outer peripheral surface of the second shaft portion to form a cavity for accommodating the positioning member.

7. The table fan according to claim 4, characterized in that, The front mesh assembly and the rear mesh assembly enclose a mounting cavity, and a motor assembly is provided inside the mounting cavity. The output end of the motor assembly is connected to a fan blade assembly.

8. The table fan according to claim 1, characterized in that, The connecting ring has two mounting holes on its side wall, and the bracket has two assembly holes at both ends. The number of shaft kits is two, and each shaft kit is inserted into the corresponding mounting hole and assembly hole to rotatably connect the fan head relative to the bracket.

9. The table fan according to claim 1, characterized in that, The positioning element is an arc-shaped sheet structure, and the center of the arc trajectory along which the plurality of positioning holes are located coincides with the axis of the shaft assembly.

Images