A table fan with dual-mode swing function

Abstract

The utility model discloses a desk fan with double mode swing head function, including base, head subassembly and set in the swing head mechanism between, the swing head mechanism includes two supports, two rotation groups, automatic swing head subassembly is manual swing head subassembly, the automatic swing head unit includes drive part and transmission unit, the manual swing head subassembly includes locating seat, elastic part and elastic locating piece, the locating seat is fixed in head subassembly and is correspondingly arranged with any side rotation subassembly, and the elastic part is equipped in the locating seat, and one end of elastic part is connected elastic locating piece, and the support on the corresponding side is equipped with the locating recess group of adapting with elastic locating piece, and elastic locating piece is separable with locating recess group under the elastic force of elastic part and is engaged, for when the external force is acted on head subassembly, realizes the active rotation positioning of manual regulation. The utility model technical scheme is aimed at solving the problem that the traditional automatic swing head desk fan adjustment exists hysteresis, cannot real -time manual intervention.

Description

Technical Field

[0001] This utility model relates to the field of table fan technology, and in particular to a table fan with dual-mode oscillation function. Background Technology

[0002] The existing oscillation function of table fans is mainly divided into two categories: one is an automatic oscillation structure, in which the up and down oscillation is mostly driven by a stepper motor and a gear transmission mechanism to drive the rotating shaft to rotate, and the oscillation angle is controlled by the forward and reverse rotation of the motor; the other is a purely mechanical manual oscillation structure, which relies on the user to manually push the head component to adjust the angle, without automatic drive function.

[0003] However, existing technologies have obvious drawbacks: forced manual adjustment in automatic mode can easily lead to gear breakage or motor step loss; the purely mechanical manual structure is limited by ratchet / clamp design, only supports fixed gears, and the maximum pitch angle is usually insufficient, which cannot meet the needs of large-scale air supply.

[0004] In summary, the existing solution suffers from functional fragmentation, with automatic oscillation and manual adjustment unable to work together. If users need to quickly fine-tune the angle (such as temporarily aligning it with a person), they must stop the automatic oscillation, significantly reducing the ease of use of the table fan. Utility Model Content

[0005] The main purpose of this utility model is to provide a table fan with dual-mode oscillation function, which aims to solve the problems of lag and inability to manually intervene in real time in the adjustment of traditional automatic oscillation table fans.

[0006] To achieve the above objectives, the present invention proposes a table fan with dual-mode oscillation function, comprising a base, a head assembly, and an oscillation mechanism disposed between the two, wherein the oscillation mechanism includes:

[0007] Two brackets, one end of each bracket being fixedly connected to the base;

[0008] Two rotating components are respectively disposed between the other end of the corresponding bracket and both sides of the head component to support the head component and enable its rotation;

[0009] An automatic head-swing assembly, comprising a drive component and a transmission unit, wherein the drive component is fixedly mounted on a head assembly, the output end of the drive component is connected to one end of the transmission unit, and the other end of the transmission unit is drivenly connected to at least one rotating component to form a power transmission chain, the power transmission chain transmitting power from the drive component to the rotating component, causing the rotating component to rotate passively under the action of the drive component, thereby achieving automatic head-swing; and

[0010] A manual head-swing assembly includes a positioning seat, an elastic element, and an elastic positioning element. The positioning seat is fixed to the head assembly and corresponds to the rotating assembly on either side. The positioning seat contains an elastic element, one end of which is connected to the elastic positioning element. The bracket on the corresponding side has a positioning groove group adapted to the elastic positioning element. The elastic positioning element can be detachably engaged with the positioning groove group under the elastic force of the elastic element, so as to realize manual adjustment of active rotation positioning when an external force is applied to the head assembly.

[0011] In one possible implementation, the rotating assembly includes a head connector and a kit. The head connector is columnar and fixed to the side of the head assembly, and the kit is cylindrical and fixed to the bracket on the corresponding side. The bracket kit is sleeved on the outside of the head connector to form a relatively rotatable sleeve structure.

[0012] In one possible implementation, the transmission unit includes a crank and a swing arm, one end of the crank being fixedly connected to the output end of the drive member, the other end of the crank being rotatably connected to one end of the swing arm, and the other end of the swing arm being fixedly connected to a rotating assembly to form a power transmission chain.

[0013] In one possible implementation, the driving element is a synchronous motor, the output of which is fixedly connected to one end of the transmission unit.

[0014] In one possible implementation, the positioning groove group includes a plurality of positioning grooves spaced apart along the rotation direction of the bracket, the spacing between two adjacent positioning grooves being adapted to the sliding stroke of the elastic positioning member, for realizing multi-angle positioning of the head assembly.

[0015] In one possible implementation, the kit protrudes outward to form a limiting boss, and a stop seat is fixed at the corresponding position of the head assembly. The stop seat is an arc-shaped seat body adapted to the limiting part, and its inner wall forms a slide rail that slides with the arc-shaped boss of the limiting part, and stop parts are formed on both sides of the slide rail.

[0016] This invention achieves seamless switching between automatic and manual oscillation by using a collaborative structure that integrates automatic and manual oscillation components. This solves the problems of lag and lack of real-time manual intervention in traditional automatic oscillation table fans, as well as the limitation of purely manual table fans in achieving wide-range automatic oscillation. Furthermore, it employs a power transmission structure using a drive component and a transmission unit (non-gear transmission) to replace the complex combination of traditional stepper motors and gears, resulting in a simpler and lower-cost overall structure, addressing the issues of complexity and high cost in existing automatic oscillation structures. In addition, the separable locking design of the elastic positioning component and the positioning groove group ensures stable angle adjustment after manual adjustment, overcoming the unreliability of positioning in purely manual table fans. The limiting cooperation between the bracket kit and the stop seat avoids structural conflicts during functional integration, improving product reliability. This invention enables real-time manual intervention and positioning during automatic oscillation without interference between the two functions, balancing the needs of automatic wide-range airflow and precise manual positioning, significantly improving user experience and reducing manufacturing costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of an embodiment of the present utility model;

[0020] Figure 3 This is an exploded view of the structure of an embodiment of the present invention;

[0021] Figure 4 This is a structural schematic diagram from another perspective of an embodiment of the present invention.

[0022] Explanation of icon numbers:

[0023] 1. Base; 2. Head assembly; 3. Swinging mechanism; 31. Bracket; 32. Rotating assembly; 321. Head connector; 322. Kit; 33. Automatic swinging assembly; 331. Synchronous motor; 332. Transmission unit; 3321. Crank; 3322. Swing rod; 34. Manual swinging assembly; 341. Positioning seat; 342. Elastic element; 343. Elastic positioning element; 344. Positioning groove assembly; 41. Limiting boss; 42. Stop seat; 421. Slide rail; 422. Stop part.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0026] To address the problems in the background technology, this utility model proposes a table fan with dual-mode oscillation function, including a base 1, a head assembly 2, and an oscillation mechanism 3 disposed between the two, wherein the oscillation mechanism 3 includes:

[0027] Two brackets 31, one end of each bracket 31 being fixedly connected to the base 1;

[0028] Two rotating components 32 are respectively disposed between the other end of the corresponding bracket 31 and both sides of the head component 2 to support the head component 2 and enable its rotation;

[0029] An automatic head-swinging assembly 33 includes a driving component and a transmission unit 332. The driving component is fixed to the head assembly 2. The output end of the driving component is connected to one end of the transmission unit 332. The other end of the transmission unit 332 is drivenly connected to at least one rotating component 32 to form a power transmission chain. The power transmission chain can transmit the power of the driving component to the rotating component 32, causing the rotating component 32 to rotate passively under the action of the driving component, thereby realizing automatic head-swinging.

[0030] The manual head-swing assembly 34 includes a positioning seat 341, an elastic element 342, and an elastic positioning element 343. The positioning seat 341 is fixed to the head assembly 2 and is correspondingly arranged with the rotating assembly 32 on either side. The positioning seat 341 is provided with an elastic element 342, and one end of the elastic element 342 is connected to the elastic positioning element 343. The bracket 31 on the corresponding side is provided with a positioning groove group 344 adapted to the elastic positioning element 343. The elastic positioning element 343 can be detachably engaged with the positioning groove group 344 under the elastic force of the elastic element 342, so as to realize the active rotation positioning for manual adjustment when an external force is applied to the head assembly 2.

[0031] Combined with reference Figures 1 to 4As shown, in this embodiment, the application mainly consists of a base 1, a head assembly 2, and a swing mechanism 3. The swing mechanism 3 connects the base 1 and the head assembly 2 to realize the up-and-down swinging motion of the head assembly 2. The base 1 serves as the supporting foundation for the table fan and is made of hard plastic. Its bottom is equipped with an anti-slip pad to enhance placement stability. The head assembly 2 is the air supply part of the table fan, integrating fan blades and a motor that drives the fan blades to rotate. It is equipped with a protective cover on the outside, and its two side walls are reserved with connection positions for installing the swing mechanism 3.

[0032] The head-swinging mechanism 3 includes two supports 31, two rotating components 32, an automatic head-swinging component 33, and a manual head-swinging component 34. Both supports 31 are metal rod-shaped structures, one end of which is fixedly connected to the top of the base 1 by screws, and the other end extends towards the head assembly 2. The two rotating components 32 are respectively installed between the ends of the two supports 31 and the two sides of the head assembly 2, allowing the head assembly 2 to rotate up and down around the rotating components 32 as an axis.

[0033] The automatic head-swinging assembly 33 consists of a drive component and a transmission unit 332. The drive component is fixed to the head assembly 2 and protected by a protective cover. The output end of the drive component is connected to one end of the rotating assembly 32 via the transmission unit 332. The other end of the transmission unit 332 is connected to at least one rotating assembly 32, forming a power transmission chain. The power transmission chain transmits the power of the drive component to the rotating assembly 32, causing the rotating assembly 32 to rotate passively under the action of the drive component, thereby realizing the automatic head-swinging function. When the drive component is activated, the transmission unit 332 transmits the power of the drive component to the rotating assembly 32, causing the rotating assembly 32 to rotate and drive the head assembly 2 to swing automatically.

[0034] Furthermore, the manual head-swing assembly 34 includes a positioning seat 341, an elastic element 342, and an elastic positioning element 343. The positioning seat 341 is a hollow box-shaped structure, which is fixed to the side wall of the head assembly 2 by screws and is correspondingly arranged with the rotating assembly 32 equipped with the transmission unit 332. The elastic element 342 is a compression spring, one end of which is fixedly connected to the inner wall of the positioning seat 341. The elastic positioning element 343 is a spherical plastic steel ball, which is fixedly connected to the other end of the elastic element 342, and in the natural state of the elastic element 342, part of the spherical plastic steel ball protrudes outside the positioning seat 341. The bracket 31 on the corresponding side is provided with a group of positioning grooves 344 spaced along its length. Each groove of the positioning groove group 344 is an arc-shaped groove adapted to the plastic steel ball, and the spacing between adjacent grooves is adapted to the diameter of the plastic steel ball. During the automatic head swinging process, the plastic steel ball slides along the groove of the positioning groove group 344 under the elastic force of the elastic element 342, without affecting the passive rotation of the rotating component 32. When manual adjustment is required, an external force is applied to the head component 2. The external force overcomes the elastic force of the elastic element 342 and pushes the plastic steel ball out of the current groove. At this time, the head component 2 drives the head connector 321 of the two rotating components 32 to rotate actively relative to the bracket 31 kit 322. After rotating to the target angle, the elastic force of the elastic element 342 causes the plastic steel ball to be stuck into the groove of the corresponding position, realizing manual positioning. At the same time, the crank 3321 and swing rod 3322 of the transmission unit 332 swing passively with the rotation of the head connector 321, without interfering with the manual adjustment action.

[0035] With the above structure, the table fan of this application can stably realize the dual-mode function of automatic oscillation and manual oscillation, and has a compact structure and low cost, effectively improving the user experience.

[0036] In one possible implementation, the rotating assembly 32 includes a head connector 321 and a sleeve 322. The head connector 321 is columnar and fixed to the side of the head assembly 2. The sleeve 322 is cylindrical and fixed to the bracket 31 on the corresponding side. The bracket 31 and the sleeve 322 are sleeved on the outside of the head connector 321 to form a relatively rotatable sleeve structure.

[0037] Combined with reference Figure 3 and Figure 4As shown, in this embodiment, the head connector 321 of the rotating assembly 32 is a solid cylindrical structure. Its diameter is adapted to the mounting position on the side of the head assembly 2, and its length extends integrally along the horizontal direction of the head assembly 2, ensuring a stable connection and relative stillness with the head assembly 2. The kit 322 is made of high-strength engineering plastic and has a through-tube structure. Its inner diameter is slightly larger than the outer diameter of the head connector 321, and its inner wall is smoothed to reduce the coefficient of friction. One end of the kit 322 is fixed to the end of the corresponding side bracket 31, forming a rigid connection; the other end of the kit 322 extends horizontally and fits precisely on the outside of the end of the head connector 321 away from the head assembly 2, forming a sleeve structure. The head connector 321 can rotate flexibly relative to the kit 322 without significant radial wobble during rotation. This sleeve structure not only provides rotational support between the head assembly 2 and the bracket 31, but also provides a stable rotation axis for automatic and manual head swinging through the relative rotation of the head connector 321 and the kit 322, ensuring smooth head swinging and structural stability.

[0038] In one possible implementation, the transmission unit 332 includes a crank 3321 and a swing arm 3322. One end of the crank 3321 is fixedly connected to the output end of the drive member, and the other end of the crank 3321 is rotatably connected to one end of the swing arm 3322. The other end of the swing arm 3322 is fixedly connected to the rotating assembly 32 to form a power transmission chain.

[0039] Combined with reference Figure 2 and Figure 3 As shown, in this embodiment, the crank 3321 of the transmission unit 332 is a bent rod-shaped structure made of hard plastic with a bending angle of 90 degrees. One end is fixedly connected to the output end of the drive component through a tight fit. Specifically, the end of the crank 3321 is provided with a shaft hole adapted to the output shaft of the synchronous motor 331. After the output shaft is inserted into the shaft hole, it is locked with a radial screw to ensure that the two rotate synchronously. The other end of the crank 3321 is provided with a through hole perpendicular to its length direction. One end of the swing rod 3322 is provided with a corresponding through hole. The two are rotatably connected by a metal pin passing through the through hole. The pin is provided with baffles at both ends to prevent it from falling off, so that the swing rod 3322 can swing flexibly relative to the crank 3321.

[0040] The swing arm 3322 is a straight metal rod. Its end away from the crank 3321 has a connecting groove that matches the head connector 321 of the rotating assembly 32. The inner wall of the connecting groove is welded to the outer wall of the head connector 321, forming a rigid connection. When the drive unit operates, the output shaft of the synchronous motor 331 drives the crank 3321 to rotate. The crank 3321 pulls or pushes the swing arm 3322 via a pin. The swing arm 3322, through its fixed connection with the head connector 321, drives the rotating assembly 32 to rotate, thus forming a power transmission chain and achieving stable power transmission to drive the automatic oscillating head movement.

[0041] In one possible implementation, the driving component is a synchronous motor 331, whose output end is fixedly connected to one end of the transmission unit 332. Specifically, the driving component is a low-voltage DC synchronous motor 331, the size of which is adapted to the internal installation space of the head assembly 2. The synchronous motor 331 is fixed to the mounting bracket 31 pre-set inside the head assembly 2 by four countersunk screws. The output shaft end is machined with a D-shaped cut surface, which forms an anti-rotation fit with the D-shaped shaft hole opened at one end of the L-shaped crank 3321 of the transmission unit 332, and then is locked with a through screw to achieve a coaxial fixed connection. The other end of the crank 3321 is provided with a double-eared hinge joint, which is hinged to the top of the swing rod 3322 by a pin; the bottom end of the swing rod 3322 is also hinged to the outer peripheral lug of the shaft of the rotating assembly 32 by a pin. When the synchronous motor 331 is energized, the output shaft directly drives the crank 3321 to perform a circular rotation, which in turn drives the swing rod 3322 to swing back and forth in the vertical plane, and finally converts it into the periodic pitching motion of the rotating assembly 32. Compared to conventional stepper motors that use low-voltage DC power, which require voltage conversion due to AC 220V mains power, this method saves costs by using a power board and control board to drive the stepper motor.

[0042] In one possible implementation, the positioning groove group 344 includes multiple positioning grooves spaced apart along the rotation direction of the bracket 31. The spacing between adjacent positioning grooves is adapted to the sliding stroke of the elastic positioning member 343, enabling multi-angle positioning of the head assembly 2. Specifically, the positioning groove group 344 consists of multiple hemispherical positioning grooves evenly spaced along the rotation direction of the bracket 31. The center-to-center distance between adjacent positioning grooves is adapted to the diameter of the elastic positioning member 343 (such as a plastic steel ball), ensuring that the elastic positioning member 343 can smoothly fall into any groove during sliding. The depth of the positioning groove is one-third of the diameter of the elastic positioning member 343, and the groove wall adopts a rounded transition design to reduce sliding resistance.

[0043] In one possible implementation, the kit 322 protrudes outward to form a limiting boss 41, and a stop seat 42 is fixed at the corresponding position of the head assembly 2. The stop seat 42 is an arc-shaped seat body adapted to the limiting part, and its inner wall forms a slide rail 421 that slides with the arc-shaped boss of the limiting part, and stop parts 422 are formed on both sides of the slide rail 421.

[0044] Combined with reference Figure 4 As shown, in this embodiment, the stop portion 422 ensures that the limiting boss 41 can slide freely within the slide rail 421 but cannot disengage. When the head assembly 2 rotates, the limiting boss 41 slides along the slide rail 421 and rigidly abuts against the end of the stop portion 422 when it reaches the maximum swing angle position. The fixing structure of the stop seat 42 restricts the head assembly 2 from continuing to rotate, thereby achieving the mechanical limiting function.

[0045] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0046] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A table fan with dual-mode oscillation function, comprising a base, a head assembly, and an oscillation mechanism disposed between the two, characterized in that, The swing mechanism includes: Two brackets, one end of each bracket being fixedly connected to the base; Two rotating components are respectively disposed between the other end of the corresponding bracket and both sides of the head component to support the head component and enable its rotation; An automatic head-swing assembly, comprising a drive component and a transmission unit, wherein the drive component is fixedly mounted on a head assembly, the output end of the drive component is connected to one end of the transmission unit, and the other end of the transmission unit is drivenly connected to at least one rotating component to form a power transmission chain, the power transmission chain transmitting power from the drive component to the rotating component, causing the rotating component to rotate passively under the action of the drive component, thereby achieving automatic head-swing; and A manual head-swing assembly includes a positioning seat, an elastic element, and an elastic positioning element. The positioning seat is fixed to the head assembly and corresponds to the rotating assembly on either side. The positioning seat contains an elastic element, one end of which is connected to the elastic positioning element. The bracket on the corresponding side has a positioning groove group adapted to the elastic positioning element. The elastic positioning element can be detachably engaged with the positioning groove group under the elastic force of the elastic element, so as to realize manual adjustment of active rotation positioning when an external force is applied to the head assembly.

2. The table fan with dual-mode oscillation function according to claim 1, characterized in that, The rotating assembly includes a head connector and a kit. The head connector is columnar and fixed to the side of the head assembly. The kit is cylindrical and fixed to the bracket on the corresponding side. The bracket kit is sleeved on the outside of the head connector to form a relatively rotatable sleeve structure.

3. The table fan with dual-mode oscillation function according to claim 1, characterized in that, The transmission unit includes a crank and a swing rod. One end of the crank is fixedly connected to the output end of the drive component, and the other end of the crank is rotatably connected to one end of the swing rod. The other end of the swing rod is fixedly connected to a rotating assembly to form a power transmission chain.

4. The table fan with dual-mode oscillation function according to claim 1, characterized in that, The driving component is a synchronous motor, and its output end is fixedly connected to one end of the transmission unit.

5. The table fan with dual-mode oscillation function according to claim 1, characterized in that, The positioning groove group includes multiple positioning grooves spaced apart along the rotation direction of the bracket. The spacing between two adjacent positioning grooves is adapted to the sliding stroke of the elastic positioning element, which is used to realize multi-angle positioning of the head assembly.

6. The table fan with dual-mode oscillation function according to claim 2, characterized in that, The kit protrudes outward to form a limiting boss, and a stop seat is fixed at the corresponding position of the head assembly. The stop seat is an arc-shaped seat body adapted to the limiting part, and its inner wall forms a slide rail that slides in cooperation with the arc-shaped boss of the limiting part, and stop parts are formed on both sides of the slide rail.

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