Fan

Abstract

The utility model discloses a fan, which relates to the field of wind power equipment, is used for solving the problems that the external gear transmission of the existing fan occupies a large space and the transmission is not stable enough, and comprises a base, a fan main body, a first driving mechanism and a second driving mechanism, the base comprises a first part and a second part which are rotationally connected with each other; the first driving mechanism is arranged between the first part and the second part and is used for driving the second part to rotate around the rotating axis relative to the first part; the second driving mechanism comprises a driving motor, a driving gear and an overturning piece, the driving motor is arranged on the fan body, the driving gear is in transmission connection with the driving motor, the overturning piece is provided with an inner gear and a rotating shaft located in the center of the inner gear, the inner gear is connected with the driving gear, and the rotating shaft is connected with the fan body and the second part. The rotating shaft is used for driving the fan body to rotate around the second part and is perpendicular to the rotating axis. The fan has the advantages of being compact in structure, stable in transmission and high in durability.

Description

Technical Field

[0001] The utility model relates to the field of wind power equipment, in particular to a fan. Background Art

[0002] Fans can be roughly divided into single-degree-of-freedom fans, double-degree-of-freedom fans, and multi-degree-of-freedom fans according to the number of degrees of freedom they can rotate. Single-degree-of-freedom fans can usually only perform shaking motion (i.e., swinging left and right), but their blades themselves cannot be adjusted up and down or tilted. Double-degree-of-freedom fans usually have the ability to rotate in two directions. For example, a shaking electric fan can not only swing the fan head left and right, but also adjust the up and down angles, thereby changing the direction and range of the wind flow. Multi-degree-of-freedom fans have three or more degrees of freedom of rotation, which can achieve more complex air flow adjustments. However, in ordinary household or commercial fans, multi-degree-of-freedom designs are not common because too many degrees of freedom may increase the complexity of the structure, manufacturing costs, and difficulty of use.

[0003] In the related art, the up and down angle adjustment of a dual-degree-of-freedom fan is usually achieved by a motor, gears and a rotating shaft. When working, the motor is supported by the outer casing, and drives the driving gear, the driven gear and the rotating shaft in sequence, and then drives the fan to swing up and down through the rotating shaft. Since the driving gear and the driven gear are external gears, this driving mechanism has the problems of occupying a large space and low transmission stability.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] The utility model provides a fan, which at least solves the technical problem of how to reduce the occupied space and improve the transmission stability.

[0007] (II) Technical solution

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0009] A fan comprises: a base, a fan body, a first driving mechanism and a second driving mechanism;

[0010] The base comprises a first part and a second part which are relatively rotatable;

[0011] The first driving mechanism is disposed between the first part and the second part, and is used to drive the second part to rotate relative to the first part around a rotation axis;

[0012] The second driving mechanism includes a driving motor, a driving gear, and a flip member. The driving motor is arranged on the fan body, the driving gear is connected to the driving motor in a transmission manner, the flip member is provided with an internal gear and a rotating shaft located at the center of the internal gear, the internal gear is connected to the driving wheel, the rotating shaft is connected to the fan body and the second part, and is used to drive the fan body to rotate around the second part, and the rotating shaft is perpendicular to the rotation axis.

[0013] In some embodiments, the fan body includes a shell, the shell is provided with a give way groove, the second part is located in the give way groove, and a touch sensing panel is provided on the groove wall of the give way groove. The touch sensing panel is used to detect an object in the give way groove between the fan body and the second part, and feed back the detection signal to the controller. When the controller receives the detection signal of the existence of the object, it controls the drive motor to stop working.

[0014] In some embodiments, the touch sensor panel is a capacitive touch sensor panel, which is used to detect changes in capacitance when an object approaches and feed back a capacitance change signal to a controller. When the capacitance value exceeds a preset threshold, the controller controls the drive motor to stop working.

[0015] In some embodiments, the second driving mechanism further includes a limiting member, which is connected to the fan body and is located on a rotation path of the flip member, and is used to limit a maximum rotation angle of the flip member.

[0016] In some embodiments, the second driving mechanism further includes a torsion spring, which is sleeved on the outside of the rotating shaft, and at least one end of the torsion spring is in contact with the flip member to provide elastic force when the flip member rotates.

[0017] In some embodiments, the fan further includes a charging head, the base is provided with a charging port adapted for the charging head, and the charging head and the charging port are detachably connected by magnetic attraction.

[0018] In some embodiments, the first driving mechanism includes a rotary motor disposed on the second part, a first gear connected to an output shaft of the rotary motor, and a second gear connected to the first gear, and the first part is connected to the second gear and rotates synchronously.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the fan provided by the utility model has the following beneficial effects:

[0021] When the fan is working, the first driving mechanism drives the second part of the base to rotate around the first part, so that the fan body rotates around the rotation axis, such as swinging left and right; at the same time, the second driving mechanism drives the driving gear to rotate through the driving motor, and the driving gear cooperates with the internal gear to drive the flip part to rotate around the rotating shaft, and the rotating shaft drives the fan body to rotate around the second part, such as swinging up and down, so that the fan can rotate with two degrees of freedom. Among them, the cooperation of the internal gears of the driving gear and the flip part is more compact than the cooperation of the external gears in the traditional fan up and down angle adjustment mechanism, which reduces the occupied space and is conducive to reducing the product volume. The internal gear transmission has a higher torque transmission capacity and stability, can withstand a larger load, and improves durability. It can be seen that the fan of the utility model has the advantages of compact structure, stable transmission and high durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of the fan in the embodiment.

[0023] Figure 2 FIG. 4 is an exploded view of a fan in an embodiment.

[0024] Figure 3 3D is a perspective view of the second driving mechanism in the embodiment.

[0025] Reference numerals:

[0026] Base 1, first part 11, second part 12, charging port 13, shaft hole 120;

[0027] The fan body 2, the clearance slot 20, the housing 21, the touch sensor panel 22, and the shaking bracket 23;

[0028] A first driving mechanism 3, a rotating motor 31, a first gear 32, and a second gear 33;

[0029] The second driving mechanism 4, the driving motor 41, the driving gear 42, the flip member 43, the torsion spring 44, the internal gear 401, the rotating shaft 402, and the stopper 403;

[0030] Charging head 5. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0032] The existing up and down angle adjustment mechanism of the double-degree-of-freedom fan has the problem of occupying a large space and having low transmission stability because the driving gear and the driven gear are matched in an external gear manner.

[0033] In order to solve the above technical problems, this embodiment provides a fan, please refer to Figures 1 to 3As shown, Figure 1 is a three-dimensional diagram of a fan in the embodiment, Figure 2 This is an exploded view of the fan in the embodiment. Figure 3 3D is a perspective view of the second driving mechanism in the embodiment.

[0034] A fan in this embodiment includes: a base 1 , a fan body 2 , a first driving mechanism 3 and a second driving mechanism 4 .

[0035] The base 1 includes a first part 11 and a second part 12 which are rotatable relative to each other, and the first part 11 and the second part 12 are rotatably connected.

[0036] The first driving mechanism 3 is disposed between the first part 11 and the second part 12 and is used to drive the second part 12 to rotate relative to the first part 11 around a rotation axis. Exemplarily, the rotation axis is a vertical axis. The first driving mechanism 3 drives the second part 12 to swing left and right around the first part 11.

[0037] The second driving mechanism 4 includes a driving motor 41, a driving gear 42, and a flip member 43. The driving motor 41 is arranged on the fan body 2, and the driving gear 42 is connected to the driving motor 41 in transmission connection. The flip member 43 is provided with an internal gear 401 and a rotating shaft 402 located at the center of the internal gear 401. The internal gear 401 is connected to the driving wheel, and the rotating shaft 402 is connected to the fan body 2 and the second part 12, and is used to drive the fan body 2 to rotate around the second part 12. The rotating shaft 402 is perpendicular to the rotation axis. Exemplarily, the rotating shaft 402 is arranged horizontally.

[0038] When the fan of the above technical solution is working, the first driving mechanism 3 drives the second part 12 of the base 1 to rotate around the first part 11, so that the fan body 2 rotates around the rotation axis, such as swinging left and right; at the same time, the second driving mechanism 4 drives the driving gear 42 to rotate through the driving motor 41, and the driving gear 42 then drives the flip member 43 to rotate around the rotating shaft 402 by cooperating with the internal gear 401, and the rotating shaft 402 drives the fan body 2 to rotate around the second part 12, such as swinging up and down, so that the fan can rotate with two degrees of freedom. Among them, the cooperation between the driving gear 42 and the internal gear 401 of the flip member 43 is more compact than the cooperation of the external gear in the traditional fan up and down angle adjustment mechanism, which reduces the occupied space and is conducive to reducing the product volume. In addition, the transmission of the internal gear 401 has a higher torque transmission capacity and stability, can withstand a larger load, and has a higher durability.

[0039] In one embodiment of the connection between the rotating shaft 402 and the fan body 2 and the second part 12, see Figure 2As shown, the second part 12 is provided with an axial hole 120, and is located on the inner side of the oscillating head bracket 23 on the back of the fan body 2. The rotating shaft 402 movably passes through the oscillating head bracket 23, and is fixed to the inner side of the axial hole 120 by means of key connection or the like. Therefore, when the base 1 is fixed, the rotating shaft 402 can drive the oscillating head bracket 23 to rotate relative to the base 1, thereby realizing the rotation of the fan body 2.

[0040] Exemplarily, the driving motor 41 is fixed to the oscillating bracket 23 by bolts.

[0041] When the second driving mechanism 4 drives the fan body 2 to swing, there is a risk of people being pinched between the fan body 2 and the second portion 12 of the base 1. In order to solve this technical problem, refer to Figure 1 As shown, in this embodiment, the fan body 2 includes a shell 21, the shell 21 is provided with a give way groove 20, the second part 12 is located in the give way groove 20, and a touch sensing plate 22 is provided on the groove wall of the give way groove 20. The touch sensing plate 22 is used to detect an object in the give way groove 20 between the fan body 2 and the second part 12, and feed back a detection signal to the controller. When the controller receives the detection signal of the existence of the object, it controls the driving motor 41 to stop working. For example, when the user's finger accidentally puts the finger in the give way groove 20 between the fan body 2 and the second part 12, the touch sensing plate 22 can sense the finger, and the controller controls the fan body 2 to stop swinging, thereby avoiding pinching.

[0042] Exemplarily, the touch sensor panel 22 is an existing capacitive touch sensor panel, which is used to detect changes in capacitance when an object approaches and feed back a capacitance change signal to a controller. When the capacitance value exceeds a preset threshold, the controller controls the drive motor 41 to stop working.

[0043] Exemplarily, the controller is a single-chip microcomputer, and the touch sensing plate 22 is connected to the single-chip microcomputer port by a connecting line. When a finger (or other conductor) approaches the touch sensing plate 22, the capacitive coupling is formed between the finger and the sensing plate, which changes the electric field distribution around the sensing plate, thereby causing the capacitance value of the single-chip microcomputer detection port to change. The single-chip microcomputer detects that the capacitance value change exceeds the preset detection threshold, and determines that a finger is approaching, and then controls the drive motor 41 to stop working, thereby pausing the shaking movement of the fan body 2.

[0044] In order to limit the swing range of the fan body 2, refer to Figure 2 and Figure 3 As shown, the second driving mechanism 4 further includes a limiter 44 , which is connected to the fan body 2 and is located on the rotation path of the flip member 43 , and is used to limit the maximum rotation angle of the flip member 43 .

[0045] Exemplarily, the limit member 44 is annular and is fixed to the casing on the back of the fan body 2 by bolts. A stopper 403 is provided on the limit member 44. The stopper 403 is located on the rotation path of the flip member 43 and limits the maximum rotation angle of the flip member 43 by blocking the limit member 44.

[0046] In order to reduce the energy consumption of the turning member 43 and improve the stability of the turning, refer to Figure 2 and Figure 3 As shown, the second driving mechanism 4 also includes a torsion spring 44, which is sleeved on the outside of the rotating shaft 402, one end of the torsion spring 44 contacts the limiter 44, and the other end contacts the flip member 43, which is used to provide elastic force when the flip member 43 rotates. This arrangement can enhance the stability of the fan during the shaking or rotating process, and prevent it from suddenly changing direction or stopping due to external force. At the same time, when the external force disappears, the elastic force of the torsion spring 44 can help the flip member 43 to automatically return to its original position, ensuring that the fan can work continuously and stably; at the same time, because the torsion spring 44 can assist the rotation of the flip member 43 to a certain extent, such as assisting the flip member 43 and the fan body 2 to flip upward, it can reduce the energy consumption of the fan motor when driving the flip member 43, and extend the service life of the drive motor 41.

[0047] See also Figure 1 As shown, the fan of this embodiment also includes a charging head 5, and the base 1 is provided with a charging port 13 adapted to the charging head 5. The charging head 5 and the charging port 13 are detachably connected by magnetic attraction. Exemplarily, the charging head 5 and the charging port 13 respectively contain magnets that can be magnetically attracted to each other to achieve a fast and stable connection. At the same time, due to the detachability of the magnetic connection, when the charging cable or the charging head 5 of the fan is accidentally tripped or pulled, the magnetic connection will be quickly disconnected to prevent the fan or the charging device from being damaged by external force.

[0048] See also Figure 2 As shown, in one embodiment of the above-mentioned first driving mechanism 3, the first driving mechanism 3 includes a rotating motor 31 arranged in the second part 12, a first gear 32 connected to the output shaft of the rotating motor 31, and a second gear 33 connected to the first gear 32. The first part 11 is connected to the second gear 33 and rotates synchronously; exemplarily, the rotating motor 31 is installed on the second part 12 of the fan as a source of driving force, the second part 12 is a structural part related to the shaking or rotation of the fan (such as a shaking bracket), the first gear 32 is directly connected to the output shaft of the rotating motor 31 or is connected through some kind of transmission mechanism (such as a coupling), the second gear 33 and the first gear 32 are transmitted through the meshing between gears, and the first part 11 is a column fixed relative to the ground, and can be rotatably connected to the second part 12 through a shaft.

[0049] In another embodiment of the first driving mechanism 3, an existing rotary driving mechanism is used, with the first part 11 as support, and the second part 12 is driven to rotate.

[0050] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fan, characterized in that: include: A base, a fan body, a first driving mechanism and a second driving mechanism; The base comprises a first part and a second part which are relatively rotatable; The first driving mechanism is disposed between the first part and the second part, and is used to drive the second part to rotate relative to the first part around a rotation axis; The second driving mechanism includes a driving motor, a driving gear, and a flip member. The driving motor is arranged on the fan body, the driving gear is connected to the driving motor in a transmission manner, the flip member is provided with an internal gear and a rotating shaft located at the center of the internal gear, the internal gear is connected to the driving wheel, the rotating shaft is connected to the fan body and the second part, and is used to drive the fan body to rotate around the second part, and the rotating shaft is perpendicular to the rotation axis.

2. The fan according to claim 1, characterized in that The fan body includes a shell, the shell is provided with a clearance groove, the second part is located in the clearance groove, and a touch sensing plate is provided on the groove wall of the clearance groove. The touch sensing plate is used to detect an object in the clearance groove between the fan body and the second part, and feed back the detection signal to the controller. When the controller receives the detection signal of the existence of the object, it controls the drive motor to stop working.

3. The fan according to claim 2, characterized in that: The touch sensing panel is a capacitive touch sensing panel, which is used to detect changes in capacitance when an object approaches, and feed back a capacitance change signal to a controller. When the capacitance exceeds a preset threshold, the controller controls the drive motor to stop working.

4. The fan according to claim 1, characterized in that: The second driving mechanism further includes a limiting member, which is connected to the fan body and is located on a rotation path of the flip member, and is used to limit a maximum rotation angle of the flip member.

5. The fan according to claim 1, characterized in that: The second driving mechanism further comprises a torsion spring, which is sleeved on the outside of the rotating shaft, and at least one end of the torsion spring is in contact with the flip member, so as to provide elastic force when the flip member rotates.

6. The fan according to claim 1, characterized in that: The fan also includes a charging head, and the base is provided with a charging port adapted to the charging head, and the charging head and the charging port are detachably connected by magnetic attraction.

7. The fan according to claim 1, characterized in that: The first driving mechanism includes a rotating motor disposed on the second part, a first gear connected to the output shaft of the rotating motor, and a second gear connected to the first gear. The first part is connected to the second gear and rotates synchronously.

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