Oscillating driving device and fan

Abstract

The utility model relates to a head shaking driving device and a fan, the head shaking driving device is used for controlling an air outlet device to swing relative to a supporting rod, and the driving device comprises an active driving assembly; the active driving assembly comprises a motor fixed in the air outlet device; the first connecting shaft is fixed on the supporting rod; and the transmission gear is used for transmitting the output power of the motor to the first connecting shaft, so that the motor can swing relative to the first connecting shaft. In the embodiment, a metal pipe can be used as a supporting rod, more choices are provided for wiring of the whole machine and the position of a control module, and the whole supporting frame is light, small and exquisite. And the appearance of the whole machine can be more plastic by using the metal support frame.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric appliances, and particularly relates to a swing driving device and a fan. BACKGROUND

[0002] The swing control structure of the fan needs to be driven by a motor. In order to have sufficient space to install the driving circuit for driving the swing control module and arranging the motor, the support base is generally large in size. In order to facilitate disassembly and assembly, the support is designed to be formed by buckling two plastic parts, an upper support shell and a lower support shell. These problems make the fan support appear bulky, and the combination of multiple plastic parts is complex and high in cost.

[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model discloses a swing driving device and a fan.

[0005] The technical scheme adopted by the utility model embodiment is as follows:

[0006] A swing driving device is used for controlling the swing of an air outlet device relative to a support rod. The driving device comprises a driving component; the driving component comprises: a motor fixed in the air outlet device; a first connecting shaft fixed to the support rod; and a transmission gear that transmits the output power of the motor to the first connecting shaft, so that the motor can swing relative to the first connecting shaft.

[0007] A further technical scheme is that the transmission gear comprises a first gear coaxially fixed to the first connecting shaft and a second gear coaxially fixed to the output shaft of the motor; the first gear is a sector gear; and the second gear is engaged with the first gear.

[0008] A further technical scheme is that the two edges of the range where the teeth of the first gear are located are provided with baffles with a height exceeding the teeth.

[0009] A further technical scheme is that the end of the first connecting shaft is provided with a first buckle; the first gear comprises a transmission shaft and a gear ring coaxially fixed; the teeth of the first gear are arranged on the outside of the gear ring; the inside of the gear ring is provided with a first limiting ring; the first connecting shaft extends into the transmission shaft and is coaxially fixed with the transmission shaft, and the first buckle is clamped on the limiting ring.

[0010] Further, the driving device further comprises a positioning assembly; the active driving assembly and the positioning assembly are supported from two sides of the air outlet device and drive the air outlet device to swing relative to the support rod.

[0011] Further, the positioning assembly comprises a second connecting shaft fixed to the support rod, a third gear coaxially fixed with the second connecting shaft, and a shift pin, one end of which is installed on the air outlet device and the other end of which is fitted into the gear teeth of the third gear and moves step by step in the gear teeth of the third gear along with the swing of the air outlet device.

[0012] The third gear is a sector gear.

[0013] Further, the support rod is hollow; a circuit through hole is formed on the support rod near the fixed position of the first connecting shaft; and the driving circuit of the motor passes through the hollow structure of the support rod and is connected to the motor through the circuit through hole.

[0014] A fan installed with the swing driving device according to any one of the above, the fan comprising an air outlet device and a support rod; the air outlet device comprising a body and a front shell fixed to the body; a fan assembly is fixed between the body and the front shell; and the motor is fixed to the front shell through a fixed support.

[0015] Further, the driving device comprises a positioning assembly; the positioning assembly comprises a second connecting shaft; the active driving assembly comprises a first shaft sleeve sleeved on the first connecting shaft; the positioning assembly comprises a second shaft sleeve sleeved on the second connecting shaft; and the body and the front shell are fixed to each other and sleeved on the first shaft sleeve and the second shaft sleeve.

[0016] The beneficial effects of the embodiments of the utility model are as follows:

[0017] In the embodiment, since the motor is fixed in the air outlet device, the support rod can be light and narrow, and only the driving circuit of the motor can pass through. The support frame does not need to be made very heavy and large and the assembly structure is very complex, like the prior art. The fixed positions of the first connecting shaft and the second connecting shaft are in the middle of the support rod, and the wiring can be performed above or below the fixed positions, so that the control panel can be selected to be installed on the base or the top plate, which further makes the support frame of the fan more compact. Since the complicated driving device does not need to be installed in the support frame and the support rod itself does not need to be disassembled, a metal pipe can be used as the support rod, which provides more choices for the wiring of the whole machine and the position of the control module. The use of the metal support frame can also make the appearance of the whole machine more plastic. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the installation schematic view of the active drive assembly in the embodiment of the utility model.

[0019] Figure 2 is the explosion view of the active drive assembly in the embodiment of the utility model.

[0020] Figure 3 is Figure 2 the schematic view of another direction.

[0021] Figure 4 is Figure 1 the enlarged schematic view of A part in the embodiment of the utility model.

[0022] Figure 5 is the installation schematic view of the positioning assembly in the embodiment of the utility model

[0023] Figure 6 is the explosion view of the positioning assembly in the embodiment of the utility model.

[0024] Figure 7 is Figure 6 the schematic view of another direction.

[0025] Figure 8 is Figure 5 the enlarged schematic view of B part in the embodiment of the utility model.

[0026] Figure 9 is the schematic view of the fan in the embodiment of the utility model.

[0027] Figure 10 is Figure 9 the explosion view.

[0028] In the drawing: 1, active drive assembly;101, motor;1011, first mounting hole;102, first connecting shaft;1021, second mounting hole;1022, first buckle;103, first gear;1031, transmission shaft;1032, baffle;1033, first limit ring;104, second gear;105, first shaft sleeve;106, fixed support;1061, third mounting hole;1062, fourth mounting hole;1063, gear installation position;2, support rod;3, positioning assembly;301, second connecting shaft;3011, fifth mounting hole;3012, second buckle;302, second shaft sleeve;303, third gear;3031, second limit ring;304, push pin;4, front shell;401, first connecting column;402, second connecting column;5, fuselage;6, fan assembly;7, air duct;8, mesh cover;9, base;10, top plate. DETAILED DESCRIPTION

[0029] The specific implementation of the utility model will be described below in combination with the drawings.

[0030] In order to make the purpose, technical scheme and advantages of the present application more clear, the device of the present application is further described in detail below in combination with the drawings and specific embodiments. The advantages and features of the present application will be more clear according to the following description. It should be noted that the drawings are very simplified and all use non-precise proportions, only for the purpose of facilitating and clearly assisting the description of the present embodiment. In order to make the purpose, features and advantages of the present application more obvious and easy to understand, please refer to the drawings. It should be noted that the structure, proportion, size and the like shown in the drawings of the present application are only used to cooperate with the content disclosed in the description, so that those skilled in the art can understand and read, and are not used to limit the conditions of the present embodiment, so they do not have the technical meaning in substance, any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0031] Figure 1 is the installation schematic diagram of the driving assembly in the embodiment of the present application. As shown in Figure 1 , the present embodiment discloses a swing driving device for controlling the swing of the air outlet device relative to the support rod 2, mainly the swing in the pitch direction. The driving device can be used in air fans such as air heaters, air coolers and the like. The driving device comprises a driving assembly 1.

[0032] Figure 2 is the exploded view of the driving assembly in the embodiment of the present application. Figure 3 is Figure 2 another direction of the schematic diagram. As shown in Figure 2 , Figure 3 , the driving assembly 1 comprises a motor 101, a first connecting shaft 102 and a transmission gear. The motor 101 in the present embodiment is a stepping motor. The motor 101 is fixed in the air outlet device. As shown in Figure 1 , the air outlet device comprises a front shell 4, and the motor 101 is fixed to the front shell 4. The first connecting shaft 102 is fixed to the support rod 2. The transmission gear transmits the output power of the motor 101 to the first connecting shaft 102, so that the motor 101 swings relative to the first connecting shaft 102, that is, relative to the support rod 2.

[0033] Since the support rod 2 is relatively fixed, the first connecting shaft 102 fixed to the support rod 2 is also relatively fixed. When the output shaft of the motor 101 rotates, the motor 101 itself will rotate at a certain angle relative to the first connecting shaft 102, that is, relative to the support rod 2, through the power transmission of the transmission gear, and then the air outlet device fixed relative to the motor 101 will also rotate, and the rotation angle and direction of the output shaft of the motor 101 can be controlled to realize the swing of the air outlet device.

[0034] In the embodiment, since the motor 101 is fixed in the air outlet device itself, the support rod 2 can be light and narrow, only allowing the driving circuit of the motor 101 to pass through. It is not necessary to make the support frame as a whole very heavy and bulky and the assembly structure is very complex as in the prior art. The driving structure of the embodiment makes the support frame of the fan as a whole more compact, since it is not necessary to install a complex driving device in the support frame, a metal pipe can be used as the support rod 2, providing more choices for the position of the whole machine wiring and control module. Using a metal support frame can also make the appearance of the whole machine more plastic.

[0035] Further, as shown in Figure 2 and Figure 3 , the transmission gear includes a first gear 103 and a second gear 104. The first gear 103 is coaxially fixed with the first connecting shaft 102. The method of coaxial fixation mentioned here and in other places in the text can preferably be various forms of key connection, such as flat key connection, and other methods such as interference fit, pin connection, etc. can also be selected for fixation. Further, the end of the first connecting shaft 102 is provided with a first buckle 1022. The first gear 103 includes a transmission shaft 1031 coaxially fixed with the first connecting shaft 102 and a gear ring, the teeth of the first gear 103 are provided outside the gear ring, the inside of the gear ring is provided with a first limiting ring 1033, the first connecting shaft 102 extends into the transmission shaft 1031 and the first buckle 1022 is clamped on the first limiting ring 1033, which plays a limiting role in the axial direction for the first gear 103.

[0036] The second gear 104 is coaxially fixed with the output shaft of the motor 101. The second gear 104 is engaged with the first gear 103. Specifically, the first gear 103 is a sector gear, that is, only part of the range outside the gear ring has teeth. This limits the rotation range output by the motor 101 to some extent, allowing the air outlet device to rotate only within a pre-set angle range, which is more in line with the actual use scenario of the fan. Further, the two edges of the range where the teeth of the first gear 103 are located are provided with baffles 1032 with a height exceeding the teeth, further limiting the range in which the first gear 103 can rotate relative to the second gear 104, preventing the phenomenon of overtravel during gear rotation.

[0037] Figure 4 is Figure 1 an enlarged schematic view of part A in Figure 4 shows a specific installation embodiment of the active driving assembly. As shown in Figure 4As shown, the motor 101 is fixed to the air outlet device through the fixing support 106. Specifically, the fixing support 106 comprises a group of third mounting holes 1061, and the fixing member fixes the fixing support 106 to the front shell 4 of the air outlet device through the third mounting holes 1061. A group of fourth mounting holes 1062 are further arranged on the fixing support 106, and a group of first mounting holes 1011 corresponding to the fourth mounting holes 1062 can be arranged on the shell of the motor 101. The motor 101 is fixed to the fixing support 106 through the fourth mounting holes 1062 and the first mounting holes 1011, and the motor 101 and the front shell 4 are fixed to each other in this way. The first connecting shaft 102 is fixed to the support rod 2 through a group of second mounting holes 1021. An annular gear mounting position 1063 is further arranged on the fixing support 106. The gear ring of the first gear 103 is sleeved on the gear mounting position 1063 and can rotate in the gear mounting position 1063, thereby playing a role in strengthening the positioning of the first gear 103.

[0038] The support rod 2 is hollow. A line through hole is arranged on the support rod 2 near the fixed position of the first connecting shaft 102. The driving line of the motor 101 passes through the hollow structure of the support rod 2 and is connected to the motor 101 through the line through hole. The driving line can be a power supply line for power supply or a control line for transmitting a control signal. Since the support rod 2 only needs to pass the driving line of the motor 101 and does not need to install other complex driving structures, the support rod 2 can be made of a metal rod, which is light and has good plasticity. The control panel for control can be installed at other positions of the fan.

[0039] Figure 5 is the installation schematic view of the positioning assembly in the embodiment of the utility model. As shown in Figure 5 , the driving device further comprises a positioning assembly 3. The driving assembly 1 and the positioning assembly 3 support and drive the air outlet device to swing relative to the support rod 2 from both sides of the air outlet device.

[0040] Figure 6 is the exploded view of the positioning assembly in the embodiment of the utility model. Figure 7 is Figure 6 the schematic view of another direction. As shown in Figure 6 and Figure 7 , the positioning assembly 3 comprises a second connecting shaft 301, a third gear 303 and a push pin 304. The second connecting shaft 301 is fixed to the support rod 2.

[0041] The end of the second connecting shaft 301 is provided with a second buckle 3012. The inner ring of the third gear 303 is provided with a second limiting ring 3031. The second connecting shaft 301 extends into the inner ring of the third gear 303 and is fixed coaxially with the third gear 303, and the second buckle 3012 is clamped on the second limiting ring 3031, thereby playing a role in limiting the third gear 303 in the axial direction.

[0042] The one end of the push pin 304 is installed on the air outlet device, and the other end is embedded in the gear teeth of the third gear 303, and the push pin 304 moves step by step in the gear teeth of the third gear 303 with the swing of the air outlet device.

[0043] Since the support rod 2 is fixed, the second connecting shaft 301 fixed to the support rod 2 is also fixed, and the third gear 303 coaxially fixed with the second connecting shaft 301 is also fixed. When the air outlet device is driven by the active driving assembly 1 to rotate at a certain angle, the push pin 304 rotates with the air outlet device, and the gear teeth of the third gear 303 or meshing or disengaging, so that the rotation mode of the air outlet device is limited, and rotates according to one gear tooth, one gear tooth, rather than continuous rotation. This makes the air outlet device have the effect of step-by-step rotation, that is, the air outlet device can rotate at a fixed angle each time, and the specific angle is determined by the pitch of the third gear 303. During rotation, the meshing of the gear teeth of the third gear 303 and the push pin 304 makes the air outlet device stable in position at each fixed angle position during the head swinging process, and does not appear to shake or position deviation, improves the stability and reliability of the head swinging process.

[0044] Further, the third gear 303 is a sector gear, and the range of the third gear 303 provided with gear teeth can correspond to the first gear 103.

[0045] Figure 8 is Figure 5 An enlarged schematic view of part B. Figure 8 A specific installation mode of the positioning assembly 3 is shown. As Figure 8 shown, the second connecting shaft 301 is fixed to the support rod 2 through a group of fifth mounting holes 3011, and the push pin 304 can be installed on the first connecting column 401 of the front shell 4.

[0046] The utility model discloses further disclose a fan installed with the head swinging driving device mentioned above. Figure 9 is a schematic view of the fan in the utility model embodiment. Figure 10 is Figure 9 An exploded view. As Figure 9 , Figure 10As shown, the fan includes an air outlet device and a support rod 2. There are two support rods 2, respectively located on both sides of the air outlet device. The rotation axis of the air outlet device relative to the support rod 2, namely the first connecting shaft 102 and the second connecting shaft 301, is fixed at approximately the middle position of the support rod 2. The control panel for controlling the motor 101 can be installed in the top plate 10 or the base 9. The motor 101 is controlled by arranging the drive circuit of the motor 101 through the support rod 2. That is, the wiring can be routed both above and below the support rod 2, which provides more possibilities for the design of the fan. Compared with the existing technology where all control devices are arranged in the base, this embodiment also makes the overall support frame less bulky.

[0047] The air outlet device includes a main body 5 and a front casing 4 fixed to the main body 5. (Combined) Figure 1 , Figure 4 , Figure 5 and Figure 8 In this embodiment, the fuselage 5 can be fixed to the front shell 4 by a plurality of second connecting posts 402.

[0048] The fan assembly 6 is fixed between the body 5 and the front shell 4. In this embodiment, the fan assembly 6 also includes a heating element, that is, the fan is a warm air blower. Of course, in practice, a cooling fan can also use this oscillating drive device. An air duct 7 and a mesh cover 8 are also installed on the front shell 4.

[0049] In this embodiment, the motor 101 is fixed to the front shell 4 by a fixing bracket 106. It can be understood that the motor 101 can also be fixed to the body 5. Since the body 5 and the front shell 4 are fixed together and swing as a whole, the swing effect is not affected.

[0050] The oscillating drive device disclosed in this utility model realizes the oscillating function of the air outlet device in the pitch direction. Specifically, the fan can be as follows: Figure 9 The vertical fan shown can also be other types of fans that require pitching and oscillating functions.

[0051] Furthermore, such as Figure 4 and Figure 8 As shown, the active drive assembly 1 also includes a first bushing 105 fitted onto the first connecting shaft 102 and located between the first connecting shaft 102 and the first gear 103. The positioning assembly 3 also includes a second bushing 302 fitted onto the second connecting shaft 301 and located between the second connecting shaft 301 and the third gear 303. Semi-circular fitting holes are respectively provided at corresponding positions on the body assembly 5 and the front shell assembly 4. The body assembly 5 and the front shell assembly 4 are fixed to each other, and the fitting holes are respectively fitted onto the first bushing 105 and the second bushing 302. When the air outlet device swings, the first bushing 105 and the second bushing 302 serve to limit movement and provide rotational lubrication, allowing for smoother rotation.

[0052] Any combination of the technical features in the above-described embodiments can be made. For the sake of brevity, the foregoing description is not intended to be exhaustive or to be limited to the precise embodiments described. Modifications or variations are possible in light of the above teachings. The embodiments were chosen and described in order to best illustrate the principles of the application and its practical application to thereby enable one of ordinary skill in the art to best utilize the application.

[0053] The above-described embodiments only express several implementation manners of the present application, which are described in a more specific and detailed manner. However, it should not be understood as a limitation on the patent scope. It should be pointed out that, for those of ordinary skill in the art, some modifications and improvements can be made without departing from the concept of the present application, which are all within the protection scope of the present application. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims

1. A head-shaking drive device, characterized in that, For controlling the swaying of the air outlet device relative to the support rod, the driving device includes an active driving component; the active driving component includes: The motor is fixed in the air outlet device; The first connecting shaft is fixed to the support rod; The transmission gear transmits the output power of the motor to the first connecting shaft, allowing the motor to oscillate relative to the first connecting shaft.

2. The oscillating drive device according to claim 1, characterized in that, The transmission gear includes a first gear fixed coaxially with the first connecting shaft and a second gear fixed coaxially with the output shaft of the motor; the first gear is a sector gear; the second gear meshes with the first gear.

3. The oscillating drive device according to claim 2, characterized in that, The two edges of the area where the teeth of the first gear are located are provided with baffles that are higher than the teeth.

4. The oscillating drive device according to claim 2, characterized in that, The first connecting shaft has a first buckle at its end; the first gear includes a transmission shaft and a gear ring fixed coaxially; the teeth of the first gear are located on the outside of the gear ring; a first limiting ring is located on the inside of the gear ring; the first connecting shaft extends into the transmission shaft and is fixed coaxially with the transmission shaft, and the first buckle is engaged with the limiting ring.

5. The oscillating drive device according to claim 1, characterized in that, The driving device further includes a positioning component; the active driving component and the positioning component respectively support the air outlet device from both sides and drive the air outlet device to sway relative to the support rod.

6. The oscillating drive device according to claim 5, characterized in that, The positioning component includes: The second connecting shaft is fixed to the support rod; The third gear is fixed coaxially with the second connecting shaft; The pin is installed at one end in the air outlet device and at the other end in the teeth of the third gear. It moves stepwise in the teeth of the third gear as the air outlet device swings.

7. The oscillating drive device according to claim 6, characterized in that, The third gear is a sector gear.

8. The oscillating drive device according to claim 1, characterized in that, The support rod is hollow; a wiring through hole is provided on the support rod at a fixed position near the first connecting shaft; the drive line of the motor passes through the hollow structure of the support rod and is connected to the motor via the wiring through hole.

9. A fan equipped with an oscillating drive device according to any one of claims 1 to 8, characterized in that, The fan includes an air outlet device and a support rod; the air outlet device includes a body and a front shell fixed to the body; the fan assembly is fixed between the body and the front shell; the motor is fixed to the front shell by a fixing bracket.

10. The fan according to claim 9, characterized in that, The drive device includes a positioning component; the positioning component includes a second connecting shaft; the active drive component includes a first bushing fitted on the first connecting shaft; the positioning component includes a second bushing fitted on the second connecting shaft; the body and the front shell are fixed to each other and fitted on the first bushing and the second bushing.

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