Direct-current motor fan

Abstract

The utility model relates to the field of fan manufacturing, and discloses a direct-current motor fan, which is characterized in that a direct-current motor which is provided with a metal shell and is provided with a rotating shaft at the lower part is rotatably inserted into a slot at the neck part of the fan through the rotating shaft, and a first bracket is fixed on the surface of the back part of the metal shell; a synchronous motor and a power control assembly are arranged on the first support, a transmission mechanism is arranged between the synchronous motor and the rotating shaft to transmit power to enable the rotating shaft to rotate, the machine shell is installed with a metal shell of the direct-current motor and the first support as fulcrums, and the power control assembly is electrically connected with the direct-current motor and the synchronous motor. The controller is used for converting alternating current into direct current and controlling the direct-current motor and the synchronous motor. The direct-current motor fan is reasonable in layout and simple in structure, the problems that the internal design of the direct-current motor fan is complex, and the layout of components is unreasonable are solved, and the manufacturing cost and the maintenance cost of the direct-current motor fan are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan manufacturing technical field, in particular to a direct current motor fan. BACKGROUND

[0002] The motor is the power source of driving the fan blade rotation, and is divided into alternating current motor and direct current motor according to input current difference. The alternating current motor fan is low in cost and simple in structure and is the first choice of consumers, but with the gradual improvement of living standards, more and more consumers choose high-efficiency energy-saving, low-noise, small-size direct current motor fan. At present, the direct current motor fan product is numerous, and some components can not be used between different direct current motor fans, which leads to high manufacturing cost and maintenance cost, and the root cause is that the internal design of the direct current motor fan is complex, and the component layout is unreasonable, so a direct current motor fan with reasonable layout and simple structure is needed to solve the above problems. SUMMARY

[0003] Therefore, it is necessary to provide a direct current motor fan,

[0004] It further includes: a base, a support column, fan blades and a power control assembly, and further includes: a fan neck provided at the top end of the support column and having a slot formed in the upper surface thereof, a rotating shaft rotatably inserted into the slot of the fan neck, a direct current motor fixedly connected to the top of the rotating shaft and having a metal shell, a first bracket fixedly connected to the back surface of the metal shell of the direct current motor, a synchronous motor arranged on the first bracket, a transmission mechanism connected to the synchronous motor and the rotating shaft, a casing connected to the metal shell of the direct current motor and the first bracket, the power control assembly is arranged on the first bracket, a hole is formed in the lower surface of the first bracket for allowing the power shaft of the synchronous motor to pass through, the synchronous motor drives the rotating shaft to rotate through the transmission mechanism, the direct current motor, the synchronous motor and the power control assembly are electrically connected, and the power control assembly is used for converting alternating current into direct current and simultaneously controlling the direct current motor and the synchronous motor.

[0005] Preferably, the fan neck includes an upper neck and a lower neck, the upper neck and the lower neck are connected through a hinge,

[0006] Preferably, threads are formed in the bottom end of the lower neck and the top end of the support column, and the lower neck is connected to the top end of the support column through threads.

[0007] Preferably, a power cord hole is formed in the lower neck, and a power cord protection sleeve is arranged in the power cord hole.

[0008] Preferably, the casing comprises a front casing and a rear casing, the front casing is screwed on the metal shell of the direct current motor, the rear casing is screwed on the first support, and the front casing and the rear casing are connected by a buckle.

[0009] Preferably, the power supply control assembly comprises a power converter support arranged on the first support, a main controller support arranged on the power converter support, a power converter screwed on the power converter support, and a main controller screwed on the main controller support and electrically connected with the power converter, the direct current motor and the synchronous motor are electrically connected with the main controller respectively, the power converter is used for converting alternating current into direct current, and the main controller is used for controlling the direct current motor and the synchronous motor.

[0010] Preferably, at least one lamp bead for displaying the working state is arranged on the main controller, a through hole corresponding to the lamp bead is arranged on the casing, and a transparent cover covering the through hole is arranged on the casing.

[0011] Preferably, the power shaft of the synchronous motor passes through the first support in the vertical direction downward, the transmission mechanism comprises a first cam fixed on the power shaft and provided with a first connecting rod on the lower surface, a second cam fixed on the rotating shaft and provided with a second connecting rod on the upper surface, and a swing rod provided with through holes for sleeving the first connecting rod and the second connecting rod at both ends, and the swing rod is sleeved on the first connecting rod and the second connecting rod at both ends respectively.

[0012] Preferably, the power shaft of the synchronous motor passes through the first support in the vertical direction downward, the transmission mechanism comprises a driving gear fixed on the power shaft of the synchronous motor and a driven gear fixed on the rotating shaft and engaged with the driving gear.

[0013] Preferably, the power shaft of the synchronous motor passes through the first support in the vertical direction downward, the transmission mechanism comprises a first belt pulley fixed on the power shaft of the synchronous motor and a second belt pulley fixed on the rotating shaft, and a belt is arranged on the first belt pulley and the second belt pulley.

[0014] The utility model discloses a direct current motor fan, the direct current motor with metal shell and the lower part is equipped with the rotating shaft rotatablely inserts the slot of fan neck part through the rotating shaft, is fixedly connected with the first support on the back surface of metal shell, is provided with synchronous motor, power control assembly on the first support, is provided with transmission mechanism between synchronous motor and rotating shaft to transmit power and makes the rotating shaft rotate, with the metal shell of direct current motor and the first support as the fulcrum installs the casing, power control assembly and direct current motor, synchronous motor electric connection, is used for converting alternating current into direct current and controls direct current motor and synchronous motor. The utility model provides a kind of direct current motor fan with reasonable layout, simple structure, solves the problem that the internal design of existing direct current motor fan is complex, and component layout is unreasonable, effectively reduces the manufacturing cost and maintenance cost of direct current motor fan. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view in an embodiment of the utility model a kind of direct current motor fan;

[0016] Figure 2 It is a partial structure schematic view in an embodiment of the utility model a kind of direct current motor fan;

[0017] Figure 3 It is front view in an embodiment of the utility model a kind of direct current motor fan;

[0018] Figure 4 It is a sectional view in an embodiment of the utility model a kind of direct current motor fan;

[0019] Figure 5 It is bottom view in an embodiment of the utility model a kind of direct current motor fan;

[0020] Figure 6 It is left view in an embodiment of the utility model a kind of direct current motor fan;

[0021] Figure 7 It is rear view in an embodiment of the utility model a kind of direct current motor fan;

[0022] Figure 8 It is top view in an embodiment of the utility model a kind of direct current motor fan;

[0023] Figure 9 It is a circuit schematic view in an embodiment of the utility model a kind of direct current motor fan.

[0024] Explanation of reference signs: 100 - fan neck, 110 - upper neck, 120 - lower neck, 130 - power line protection sleeve, 140 - rotating bolt, 150 - nut, 200 - rotating shaft, 300 - DC motor, 400 - first support, 500 - synchronous motor, 600 - power control assembly, 610 - power converter support, 620 - main controller support, 630 - power converter, 640 - main controller, 641 - lamp bead, 700 - transmission mechanism, 710 - first cam, 720 - swing rod, 730 - second cam, 800 - casing, 810 - front casing, 820 - rear casing, 821 - transparent cover. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purpose, features and advantages of the utility model more apparent, obvious and easy to understand, the specific embodiments of the utility model are described in detail below. In the following description, a large number of specific details are set forth in order to fully understand the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0026] The utility model discloses a DC motor fan, specifically, please combine Figures 1-9 The DC motor fan of the embodiment comprises a base (not marked in the drawing), a stand (not marked in the drawing) fixed on the base, a fan neck 100 connected at the top end of the stand, a DC motor 300 with a metal shell, a rotating shaft 200 arranged on the lower surface of the DC motor metal shell, a first support 400 fixed on the back surface of the metal shell, a synchronous motor 500 installed on the first support 400, a power control assembly 600 installed on the first support 400, a transmission mechanism 700 installed between the rotating shaft 200 and the synchronous motor 500, a casing 800 installed on the DC motor 300 metal shell and the first support 400 at the same time, and fan blades (not marked in the drawing) installed on the power shaft of the DC motor 300. A slot is formed at the top end of the fan neck 100, and the rotating shaft 200 is rotatably inserted into the slot of the fan neck 100. The synchronous motor 300 transmits power to the rotating shaft 200 through the transmission mechanism 700 to drive the rotating shaft 200 to rotate, and then drives the fan head to rotate around the rotating shaft 200, i.e. the fan swing head. The DC motor 300 and the synchronous motor 500 are electrically connected to the power control assembly 600 respectively, the power control assembly 600 converts alternating current into direct current used by the DC motor 300 and the synchronous motor 500, and the DC motor 300 and the synchronous motor 500 are controlled by the power control assembly 600 to control the opening, closing and turning of the two. The fan head is all the components above the fan neck 100 including the fan blades.

[0027] In the embodiment, the first support 400 is fixedly connected to the back surface of the metal shell of the DC motor 300, the synchronous motor 500, the power control assembly 600 and the rear half of the casing 800 are all arranged on the first support 400, and the first support 400 is divided into two layers. The synchronous motor 500 is arranged on the lower layer of the first support 400, the lower layer of the first support 400 is provided with a hole through which the power shaft of the synchronous motor 500 passes, the power shaft of the synchronous motor 500 extends from the lower layer of the first support 400 in the vertical direction and is connected with the transmission mechanism 700; the power control assembly 600 is arranged on the upper layer of the first support 400, the distance from the power control assembly 600 to the DC motor 300 and the synchronous motor 500 is the shortest at this position, so that the complexity inside the fan can be effectively reduced. The double-layer structure of the first support 400 can maximize the use of the space inside the fan casing 800, and because the components are concentrated, the gravity center of the fan as a whole is closer to the rotating shaft of the DC motor 300, so that the shaking of the fan during work caused by the deviation of the gravity center is effectively reduced. Compared with the DC motor fan in the prior art, the DC motor fan of the utility model has a simpler structure and a more reasonable layout, and can effectively reduce the manufacturing cost and the maintenance cost.

[0028] In order to adjust the blowing angle of the DC motor fan in the vertical direction, in an embodiment, as shown in Figures 1-8 , the fan neck 100 comprises an upper neck 110 and a lower neck 120, the bottom end of the upper neck 110 and the top end of the lower neck 120 are both provided with through holes corresponding to each other in the horizontal direction, a rotating bolt 140 is simultaneously arranged in the through holes of the upper neck 110 and the lower neck 120, one end of the rotating bolt 140 passing through the through hole is provided with a nut 150, so that the upper neck 110 and the lower neck 120 can rotate relative to each other around the rotating bolt 140, that is, the upper neck 110 and the lower neck 120 are hingedly connected. The above structure enables the DC motor fan of the utility model to adjust the blowing angle in the vertical direction, and provides different blowing angles for the user to adapt to different needs.

[0029] In order to simply and stably install the fan neck 100 on the support column, in an embodiment, as shown in Figures 1-8 , the bottom end of the lower neck 120 is provided with external threads, the top surface of the support column is concave downward and provided with a groove (not shown in the figure) corresponding to the bottom end of the lower neck 120, and the groove wall is provided with internal threads matched with the external threads of the lower neck 120, that is, the fan neck 100 is connected with the support column through threads. The above structure not only enables the fan neck 100 and the head to be stably installed on the support column, but also reduces the difficulty of disassembly and assembly, improves the production efficiency, and reduces the production cost and the maintenance cost. It should be noted that external threads can also be arranged on the support column, and the bottom end of the lower neck is concave upward and provided with a groove with internal threads, which can also enable the fan neck to be connected with the support column through threads.

[0030] In order to reduce the abrasion of the power cord and increase its service life, in an embodiment, as shown in Figure 2 , Figures 4-8 , a through hole is formed in the lower neck 120 for the power cord to pass through, and a power cord protection sleeve 130 is arranged in the through hole and penetrates the through hole. The power cord passes through the protection sleeve 130 and the through hole of the lower neck 120 into the inside of the fan housing 800 and is electrically connected with the power control assembly 600. The protection sleeve 130 can provide support when the power cord is moving, preventing the power cord from being abraded by the lower neck 120, increasing the service life of the power cord of the DC motor fan, and reducing the use and maintenance cost.

[0031] In an embodiment, as shown in Figures 1-8 , the housing 800 of the DC motor fan is divided into two parts, including a front housing 810 and a rear housing 820. Threaded holes are formed in the front surface of the metal shell of the DC motor 300, and through holes are formed in the corresponding positions of the front housing 810. Screws pass through the through holes of the front housing 810 to threadedly connect the front housing 810 to the metal shell of the DC motor 300. The end of the first bracket 400 facing the rear housing 820 is provided with a through hole, and a through hole is formed in the corresponding position of the rear housing 820. A bolt passes through the through holes of the rear housing 820 and the first bracket 400, and a nut is screwed on the other end to fix the rear housing 820 to the first bracket 400. A plurality of buckle heads are arranged around the front end of the rear housing 820, and a plurality of buckle grooves are arranged around the rear end of the front housing 810 in the corresponding positions. The front housing 810 and the rear housing 820 are connected to each other by buckling. In this embodiment, the specific installation sequence of the housing 800 is as follows. First, the rear housing 820 is fixed to the first bracket 400 by bolts and nuts. Then, the front housing 810 is installed on the rear housing 820 by buckling. Finally, the front housing 810 is fixed to the metal shell of the DC motor 300 by screws.

[0032] In an embodiment, as shown in Figure 1 , Figure 2 , Figure 4As shown, the power control assembly 600 comprises: a power converter support 610 arranged on the first support 400 in the vertical direction, a main controller support 620 arranged on the power converter support 610, a power converter 630 threadedly connected to the power converter support 610, and a main controller 640 threadedly connected to the main controller support 620 and electrically connected to the power converter 630. In this embodiment, the AC power of the external power source is first connected to the power converter 630 through the power cord, the power converter 630 converts the 110V-240V AC power into 24V DC power, and inputs the DC power into the main controller 640, the main controller 640 is electrically connected to the DC motor 300 and the synchronous motor 500, controls the input of the DC power to the two, i.e. controls the opening and closing of the DC motor 300 and the synchronous motor 500, and also controls the rotation direction of the synchronous motor 500, thereby controlling the rotation direction of the fan head driven by the rotating shaft 200, i.e. controlling the fan oscillation.

[0033] In one embodiment, as shown in Figure 1 、 Figure 2 、 Figure 4 , the main controller 640 is threadedly connected to the lower surface of the main controller support 620, the main controller 640 is provided with four lamp beads 641 for displaying the working state, the main controller support 620 and the rear shell 820 are both provided with through holes in the areas corresponding to the lamp beads 641, and a transparent cover 821 is covered on the four through holes. According to the actual needs, the program is set in the main controller 640 to realize the function of the lamp beads 641 displaying different working states.

[0034] In one embodiment, as shown in Figure 1 、 Figure 2 、 Figure 4 , the transmission mechanism 700 comprises: a first cam 710 sleeved on the power shaft of the synchronous motor 500 and provided with a first connecting rod on the lower surface, a second cam 730 fixedly connected to the rotating shaft 200 and provided with a second connecting rod on the upper surface, and an oscillating rod 720 provided with through holes for sleeving the first connecting rod and the second connecting rod at both ends, the oscillating rod 720 is sleeved on the first connecting rod and the second connecting rod at both ends. In this embodiment, when the synchronous motor 500 is turned on, the power shaft rotates to drive the first cam 710 to rotate, the first connecting rod on the first cam 710 rotates in a semicircle with the power shaft of the synchronous motor 500 as the center, drives the oscillating rod 720 to oscillate, the oscillating rod 720 drives the second cam 730 to rotate in a semicircle with the rotating shaft 200 as the center, thereby making the rotating shaft 200 rotate to drive the fan head thereon to rotate, realizing the fan oscillation function.

[0035] In one embodiment, as shown in Figure 1 、 Figure 2 、 Figure 4As shown in the figure, the transmission mechanism 700 comprises: a driving gear fixedly connected to the power shaft of the synchronous motor 500, a driven gear fixedly connected to the rotating shaft 200 and engaged with the driving gear, the synchronous motor 500 drives the driving gear to rotate, the driving gear drives the driven gear engaged therewith to rotate, thereby driving the rotating shaft 200 and the fan head mounted on the rotating shaft 200 to rotate, and the gear transmission can realize 360° rotation of the fan in the horizontal direction.

[0036] In an embodiment, as shown in the figure, Figure 1 , Figure 2 , Figure 4 As shown in the figure, the transmission mechanism 700 comprises: a first pulley fixedly connected to the power shaft of the synchronous motor 500 and a second pulley fixedly connected to the rotating shaft 200, and a belt is sleeved on the first pulley and the second pulley. The belt transmission can reduce the noise when the fan swings.

[0037] The technical features of the above-mentioned embodiments can be combined arbitrarily, and in order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0038] The above-mentioned embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A direct current motor fan, comprising: The base, the support, the fan blade and the power control assembly (600) are characterized in that further comprising: a fan neck (100) provided at the top end of the support and having a slot on the upper surface, a rotating shaft (200) rotatably inserted into the slot of the fan neck, a DC motor (300) fixedly connected to the top of the rotating shaft (200) and having a metal shell, a first bracket (400) fixedly connected to the back surface of the metal shell of the DC motor (300), a synchronous motor (500) provided on the first bracket (400), a transmission mechanism (700) connected to the synchronous motor (500) and the rotating shaft (200), a machine shell (800) connected to the metal shell of the DC motor (300) and the first bracket (400), the power control assembly (600) is provided on the first bracket (400), the lower surface of the first bracket (400) is provided with a hole for the power shaft of the synchronous motor (500) to pass through, the power shaft of the synchronous motor (500) passes through the first bracket (400) in the vertical direction and is connected to the transmission mechanism (700), the synchronous motor (500) drives the rotating shaft (200) to rotate through the transmission mechanism (700), the DC motor (300), the synchronous motor (500) and the power control assembly (600) are electrically connected, and the power control assembly (600) is used for converting alternating current into direct current and controlling the DC motor (300) and the synchronous motor (500).

2. The direct current motor fan of claim 1, wherein The fan neck (100) comprises an upper neck (110) and a lower neck (120), and the upper neck (110) and the lower neck (120) are connected by a hinge.

3. The direct current motor fan of claim 2, wherein, The bottom end of the lower neck (120) and the top end of the support are provided with threads, and the lower neck (120) is threadedly connected to the top end of the support.

4. The direct current motor fan of claim 3, wherein, The lower neck (120) is provided with a power line hole, and a power line protection sleeve (130) penetrating the power line hole is arranged on the power line hole.

5. The direct current motor fan of claim 1, wherein, The machine shell (800) comprises a front machine shell (810) and a rear machine shell (820), the front machine shell (810) is threadedly connected to the metal shell of the DC motor (300), the rear machine shell (820) is threadedly connected to the first bracket (400), and the front machine shell (810) and the rear machine shell (820) are connected by buckling.

6. The direct current motor fan of claim 1, wherein, The power supply control assembly (600) comprises a power converter support (610) arranged on the first support (400), a main controller support (620) arranged on the power converter support (610), a power converter (630) threadedly connected to the power converter support (610), and a main controller (640) threadedly connected to the main controller support (620) and electrically connected to the power converter (630), wherein the DC motor (300) and the synchronous motor (500) are electrically connected to the main controller (640), the power converter (630) is used for converting alternating current into direct current, and the main controller (640) is used for controlling the DC motor (300) and the synchronous motor (500).

7. The direct current motor fan of claim 6, wherein, At least one lamp bead (641) for displaying the working state is arranged on the main controller (640), and a through hole corresponding to the lamp bead (641) is arranged on the shell (800), and a transparent cover (821) covering the through hole is arranged on the shell (800).

8. The direct current motor fan of claim 1, wherein, The transmission mechanism (700) comprises a first cam (710) fixed to the power shaft of the synchronous motor (500) and provided with a first connecting rod on the lower surface, a second cam (730) fixed to the rotating shaft (200) and provided with a second connecting rod on the upper surface, and a swing rod (720) provided with through holes for sleeving the first connecting rod and the second connecting rod at both ends, wherein the swing rod (720) is sleeved on the first connecting rod and the second connecting rod at both ends, respectively.

9. The brushless DC motor fan of claim 1, wherein, The transmission mechanism (700) comprises a driving gear fixed to the power shaft of the synchronous motor (500) and a driven gear fixed to the rotating shaft and engaged with the driving gear.

10. The direct current motor fan of claim 1, wherein, The transmission mechanism (700) comprises a first pulley fixed to the power shaft of the synchronous motor (500) and a second pulley fixed to the rotating shaft (200), and a belt is arranged on the first pulley and the second pulley.

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