Electric fan

Abstract

The utility model relates to the technical field of fans, in particular to an electric fan which comprises an electric fan body and a supporting piece. The electric fan body is provided with a direct-current motor. The supporting piece comprises a shell, an adapter plate and a power panel, and the shell is rotationally connected with the electric fan body; the shell is provided with a mounting cavity, and the power panel is arranged in the mounting cavity; the adapter plate is electrically connected with the power panel; and the direct current motor is electrically connected with the adapter plate. According to the electric fan, the direct current motor is arranged in the electric fan body, the power panel is arranged in the shell, the power panel can convert alternating current into direct current and supply power to the direct current motor through the adapter plate, and the adapter plate can control the rotating speed of the direct current motor. The electric fan body can use the direct current motor, compared with a traditional inner winding motor, the direct current motor is light in weight, the weight of the electric fan body is reduced, the weight proportion of the electric fan body and the shell is reduced, the power-to-weight ratio is also increased, and then the lodging resistance under the same structure is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the fan technical field, especially a kind of electric fan. BACKGROUND

[0002] With the development of society, the demand for electric fan increases, and electric fan is needed to relieve heat in hot weather, the existing electric fan is composed of a stand, a controller and a fan body, one end of the stand is connected to the fan body, the other end is grounded, the controller is installed on the side of the stand, and the controller is electrically connected with the fan body, which is convenient to install and disassemble, and the operation is also convenient.

[0003] But the motor of the current electric fan mostly uses inner winding motor, the weight of this kind of motor is heavy, and the power-weight ratio is not high, which will make the fan body overall overweight, increase the material cost, since the fan body is installed above the stand, the greater the weight of the fan body, the higher the gravity center, and the weaker the anti-falling performance. CONTENT OF THE INVENTION

[0004] The present application provides an electric fan to solve the problem that the inner winding motor used in the existing electric fan makes the fan body overall overweight.

[0005] The present application provides an electric fan, comprising:

[0006] The electric fan body is provided with a DC motor;

[0007] The support includes a housing, an adapter plate and a power board, the housing is rotatably connected with the electric fan body; the housing has a mounting cavity, and the power board is arranged in the mounting cavity; the adapter plate is electrically connected with the power board; and the DC motor is electrically connected with the adapter plate.

[0008] Further, a switch assembly is further included, and the switch assembly is arranged in the housing and electrically connected with the adapter plate.

[0009] Further, the switch assembly includes a plurality of keys, each of the keys extends out of the outside of the mounting cavity, and each of the keys is electrically connected with the adapter plate.

[0010] Further, a power plug is further included, the output end of the power plug is connected with a first zero line and a first live wire, one end of the first zero line and the first live wire away from the power plug is connected to the input end of the power board; the output end of the power board includes a DC output end and a grounding output end, the input end of the adapter plate includes a DC input end and a grounding input end, the DC output end is electrically connected with the DC input end, and the grounding output end is electrically connected with the grounding input end.

[0011] Further, a timer is further included, which is rotatably connected to the shell and connected to the first zero line.

[0012] Further, the first zero line is connected with a closed terminal between the timer and the power board.

[0013] Further, a placing cavity is arranged in the mounting cavity, the power board is placed in the placing cavity, and a positioning column is arranged on a cavity wall of the placing cavity.

[0014] Further, a plurality of limiting ribs are arranged in the mounting cavity, the plurality of limiting ribs are arranged to form a slot, and the adapter board is inserted into the slot.

[0015] Further, a reinforcing rib is arranged on one side of the limiting rib, the reinforcing rib is arranged on one side of the limiting rib and fixedly connected with the shell and the limiting rib respectively, and used for supporting the limiting rib.

[0016] Further, a second zero line and a second live wire are arranged between the adapter board and the DC motor, used for controlling the DC motor, and a VSP line is further arranged between the adapter board and the DC motor, used for voltage monitoring and protection of the DC motor.

[0017] The above technical solution provided in the application has the following advantages compared with the prior art.

[0018] In the technical solution of the application, the DC motor is arranged in the electric fan body, and the power board is arranged in the shell, the power board can convert alternating current into direct current, and supply power to the DC motor through the adapter board, and the adapter board can control the rotating speed of the DC motor. The arrangement makes the electric fan body use the DC motor, compared with the traditional inner winding motor, the lighter weight of the DC motor reduces the weight of the electric fan body, reduces the weight ratio of the electric fan body and the shell, improves the power-to-weight ratio, and further improves the anti-falling capacity under the same structure. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings incorporated into the specification and forming a part of the specification, show embodiments consistent with the application, and together with the specification, serve to explain the principles of the application.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without creative labor.

[0021] One or more embodiments are illustrated by way of example in the figures that form a part of this patent specification. These example embodiments demonstrate, but do not limit, the scope of the embodiments. Elements having the same reference numbers or characters in the figures indicate like elements. The figures do not limit the scope of the embodiments, unless otherwise specified. The figures are not drawn to scale.

[0022] Figure 1 A structural schematic diagram of an electric fan according to an embodiment of the present application;

[0023] Figure 2 A structural schematic diagram of an electric fan according to an embodiment of the present application; Figure 1 An enlarged view of A;

[0024] Figure 3 A front view of B; Figure 1 A rear view of B;

[0025] Figure 4 A side sectional view of B; Figure 1 A side sectional view of B;

[0026] Figure 5 A side sectional view of B; Figure 1 A side sectional view of B;

[0027] Figure 6 An electrical schematic diagram of an electric fan according to an embodiment of the present application.

[0028] BRIEF DESCRIPTION OF DRAWINGS

[0029] 1. support; 11. housing; 12. mounting cavity; 121. placement cavity; 122. positioning column; 123. connecting protrusion; 124. threaded hole;

[0030] 2. power board; 21. DC output terminal; 22. ground output terminal; 23. mounting hole;

[0031] 3. adapter plate; 31. second neutral line; 32. second live wire; 33. VSP line; 34. DC input terminal; 35. ground input terminal;

[0032] 4. switch assembly; 41. button; 42. through hole; 43. backing plate;

[0033] 5. power plug;

[0034] 6. first neutral line;

[0035] 7. first live wire;

[0036] 8. timer;

[0037] 9. closed terminal;

[0038] 10. limiting rib; 101. reinforcing rib; 102. insertion slot. DETAILED DESCRIPTION

[0039] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the scope of protection of the present application.

[0040] The following disclosure provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplicity, the elements and settings of particular examples in the following are described. Of course, they are only examples and are not intended to limit the present application. Furthermore, the present application can repeat the reference numerals and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not indicate the relationship between the discussed various embodiments and / or settings.

[0041] For the convenience of description, spatial relative terms can be used in the description to describe the relative position relationship or movement condition of one element or feature with respect to another element or feature as shown in the drawings, such as "inner", "outer", "inboard", "outboard", "under", "below", "on", "above", "front", "back", and the like. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is flipped over or the posture is changed or the movement state is changed, then the directional indications are also changed accordingly, for example: the element described as "under" or "below" another element or feature will be oriented as "above" or "above" another element or feature. Therefore, the example term "below" can include both the up and down positions. The device can be additionally oriented (rotated by 90 degrees or in other directions) and the spatial relative relationship descriptors used in the description are interpreted accordingly.

[0042] In order to solve the technical problem that the existing inner winding motor of the electric fan in the prior art makes the overall fan body heavy, the present application provides an electric fan, which can use a DC motor for the electric fan body, reduces the weight of the electric fan body, reduces the weight ratio of the electric fan body and the shell, and improves the power-to-weight ratio, thereby improving the anti-falling capacity under the same structure.

[0043] Figures 1 to 6 The electric fan provided by the present application comprises an electric fan body and a support 1, the electric fan body is internally provided with a DC motor, the electric fan body is arranged in the support 1, and the support 1 is arranged in the shell. Figure 1The support 1 comprises a housing 11, an adapter plate 3 and a power board 2, the housing 11 is rotationally connected with the electric fan body; the housing 11 has a mounting cavity 12, the power board 2 is arranged in the mounting cavity 12; the adapter plate 3 is electrically connected with the power board 2; the DC motor is electrically connected with the adapter plate 3.

[0044] The DC motor is arranged in the electric fan body, and the power board 2 is arranged in the housing 11, the power board 2 can convert AC into DC, and supply power to the DC motor through the adapter plate 3, and the adapter plate 3 can control the rotating speed of the DC motor. The setting makes the electric fan body use the DC motor, compared with the traditional inner winding motor, the lighter weight of the DC motor reduces the weight of the electric fan body, reduces the weight ratio of the electric fan body and the housing 11, and improves the power-to-weight ratio, and further improves the anti-falling capacity under the same structure.

[0045] As shown in Figures 1-6 In the technical scheme of the embodiment, a switch assembly 4 is arranged in the housing 11, and the switch assembly 4 is electrically connected with the adapter plate 3. The switch assembly 4 can be a mechanical key 41 switch, or an infrared receiving switch.

[0046] As shown in Figures 1-6 The switch assembly 4 comprises a plurality of keys 41, each of the keys 41 extends out of the outside of the mounting cavity 12, each of the keys 41 is electrically connected with the adapter plate 3, the key 41 preferably adopts a piano key switch, a through hole 42 is arranged on the housing 11, the switch is provided with a plurality of through holes 42 according to requirements, to represent different gears; the plurality of piano keys pass through the through hole 42, a control board is arranged in the housing 11 and electrically connected with the adapter plate 3, the control board is used for recording and conveying the pressing information of the piano keys and transmitting to the adapter plate 3. In order to save cost, a backing plate 43 is arranged on the cavity wall of the mounting cavity 12, the backing plate 43 is arranged on one side of the through hole 42 and extends to the lower side of all the piano keys, the side close to the piano keys of the backing plate 43 is provided with the control board, the setting only needs the control board to be connected with the backing plate 43, and does not need the control board to be connected with the cavity wall on the other side of the through hole 42, so as to reduce the length of the piano keys, and save the space in the mounting cavity 12.

[0047] As shown in Figure 6As shown, in this embodiment, the technical solution also includes a power plug 5. The output end of the power plug 5 is connected to a first neutral wire 6 and a first live wire 7. The ends of the first neutral wire 6 and the first live wire 7 away from the power plug 5 are connected to the input end of the power board 2. In use, the power plug 5 is connected to an external socket for power supply. The first neutral wire 6, the first live wire 7, and the power board 2 form a circuit. If the power plug 5 is connected to an AC socket, the power board 2 can convert AC power into DC power. This conversion technology is mature in existing technology and will not be described in detail in this embodiment. The output end of the power board 2 includes a DC output end 21 and a ground output end 22. The input end of the adapter board 3 includes a DC input end 34 and a ground input end 35. The DC output end 21 is electrically connected to the DC input end 34 to supply power to the adapter board. The ground output end 22 is electrically connected to the ground input end 35 to prevent leakage of the adapter board.

[0048] like Figures 1-6 As shown, the technical solution of this embodiment also includes a timer 8, which is rotatably connected to the housing 11 and connected to the first neutral wire 6. The timer 8 can set the time cut-off circuit to set the time for turning off the electric fan before the user rests. The timer 8 is set on the neutral wire, and compared with the live wire, the cutting of the neutral wire will not generate electric sparks, thus improving safety.

[0049] like Figure 6 As shown in the technical solution of this embodiment, the first neutral wire 6 is connected to a closed terminal 9 between the timer 8 and the power board 2. The closed terminal 9 is used in electrical connections to provide a secure and reliable electrical connection by sealing the wire joint, preventing poor contact and oxidation, improving safety, and reducing the risk of short circuits. It also protects the wires, extends their service life, facilitates installation and maintenance, and reduces resistance through highly conductive materials, ensuring efficient current conduction.

[0050] like Figures 1-5 As shown, in the technical solution of this embodiment, the mounting cavity 12 is provided with a placement cavity 121, and the power board 2 is placed in the placement cavity 121. The cavity wall of the placement cavity 121 is provided with a positioning post 122. Specifically, a plurality of connecting protrusions 123 are provided in the placement cavity 121. The height of the connecting protrusions 123 is lower than that of the positioning post 122. The connecting protrusions 123 are provided with threaded holes 124. The power board 2 is provided with a plurality of mounting holes 23. One mounting hole 23 is inserted into the positioning bead, and the remaining mounting holes 23 correspond to a threaded hole 124. Screws are used to connect the mounting holes 23 and the threaded holes 124 to complete the fixation of the power board 2.

[0051] like Figures 1-2As shown in the technical solution of this embodiment, the mounting cavity 12 is provided with a plurality of limiting ribs 10, which are arranged to form a slot 102, and the adapter plate 3 is inserted into the slot 102. When installing the adapter plate 3, it is only necessary to insert the adapter plate 3 into the slot 102 to complete the installation. This setting enables quick disassembly of the adapter plate 3, which is convenient for production and installation, and also provides convenience for development. If a problem is found in the adapter plate 3 during testing, it can be replaced by hand without the need for disassembly with a screwdriver.

[0052] like Figures 1-2 As shown, in the technical solution of this embodiment, a reinforcing rib 101 is provided on one side of the limiting rib 10. The reinforcing rib 101 is located on one side of the limiting rib 10 and is fixedly connected to the housing 11 and the limiting rib 10 respectively, for supporting the limiting rib 10. The setting of the reinforcing rib 101 can improve the strength of the limiting rib 10. The reinforcing rib 101 can distribute the force, improve the overall structure's resistance to compression, bending or torsion, and at the same time reduce the use of materials and reduce weight.

[0053] like Figure 6 As shown, in this embodiment, a second neutral wire 31 and a second live wire 32 are connected between the adapter board 3 and the DC motor to form a current loop for controlling the DC motor. A VSP line 33 is also connected between the adapter board 3 and the DC motor for voltage monitoring and protection. The purpose of connecting the VSP line 33 between the DC motor and the adapter board 3 is to monitor voltage changes and protect the motor from voltage anomalies (such as overvoltage or undervoltage). The VSP line 33 is responsible for transmitting the voltage signal to a protection device (such as a relay or protection circuit). In this way, when an abnormal voltage occurs, the system can take timely protective measures, such as cutting off the power supply or stopping the motor, thereby avoiding damage to the motor caused by voltage fluctuations.

[0054] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0055] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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, they should not be construed as limitations on this application.

[0056] In addition, the terms "first", "second", etc. are used herein only to describe different instances, and do not imply or suggest relative importance or a number of the technical features indicated. Thus, the features defined with "first", "second", etc. can include one or more of the features explicitly or implicitly. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0057] In the present application, unless otherwise explicitly and specifically defined, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be connected, or it can be detachable, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0058] In the present application, unless otherwise explicitly and specifically defined, the first feature "on" or "under" the second feature can include the first and second features in direct contact, or the first and second features not in direct contact but in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0059] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application.

[0060] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, these modifications and variations of the present application are intended to be included within the scope of the claims of the present application and their equivalents.

[0061] The above is merely specific embodiments of the present application, and the protection scope of the present application is not limited thereto, and any modification or replacement within the technical scope disclosed by the present application can be easily thought by those skilled in the art, and these modifications or replacements shall be encompassed in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An electric fan characterized by comprising: The utility model relates to an electric fan, including: An electric fan body provided with a direct current motor; A support (1) comprising a shell (11), an adapter plate (3) and a power board (2), the shell (11) is rotationally connected with the electric fan body; the shell (11) has a mounting cavity (12), the mounting cavity (12) is provided with the power board (2) therein; the adapter plate (3) is electrically connected with the power board (2); the direct current motor is electrically connected with the adapter plate (3).

2. The electric fan according to claim 1, characterized in that, Further comprising a switch assembly (4) arranged in the shell (11), the switch assembly (4) is electrically connected with the adapter plate (3).

3. The electric fan according to claim 2, wherein The switch assembly (4) comprises a plurality of keys (41), each of the keys (41) extends out of the outside of the mounting cavity (12), and each of the keys (41) is electrically connected with the adapter plate (3).

4. The electric fan according to claim 1, characterized in that, Further comprising a power plug (5), the output end of the power plug (5) is connected with a first zero line (6) and a first live wire (7), the ends of the first zero line (6) and the first live wire (7) away from the power plug (5) are connected to the input end of the power board (2); the output end of the power board (2) comprises a direct current output end (21) and a ground output end (22), the input end of the adapter plate (3) comprises a direct current input end (34) and a ground input end (35), the direct current output end (21) is electrically connected with the direct current input end (34), and the ground output end (22) is electrically connected with the ground input end (35).

5. The electric fan according to claim 4, wherein Further comprising a timer (8) rotationally connected with the shell (11) and connected to the first zero line (6).

6. The electric fan according to claim 5, wherein The first zero line (6) is connected with a closed terminal (9) between the timer (8) and the power board (2).

7. The electric fan according to claim 1, wherein The mounting cavity (12) is provided with a placing cavity (121), the power board (2) is placed in the placing cavity (121), and a positioning column (122) is arranged on the cavity wall of the placing cavity (121).

8. The electric fan according to claim 1, wherein The mounting cavity (12) is provided with a plurality of limiting ribs (10), the plurality of limiting ribs (10) are arranged to form a slot (102), and the adapter plate (3) is inserted into the slot (102).

9. The electric fan according to claim 8, wherein One side of the limiting rib (10) is provided with a reinforcing rib (101), the reinforcing rib (101) is located on one side of the limiting rib (10) and is fixedly connected with the shell (11) and the limiting rib (10) respectively, and is used for supporting the limiting rib (10).

10. The electric fan according to claim 1, wherein A second zero line (31) and a second live wire (32) are connected between the adapter plate (3) and the direct current motor, used for controlling the direct current motor; a VSP line (33) is further connected between the adapter plate (3) and the direct current motor, used for voltage monitoring and protection of the direct current motor.

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