Alternating current and direct current dual-purpose electric fan base and electric fan

Abstract

The utility model discloses an alternating current and direct current dual-purpose electric fan base and an electric fan, and the electric fan base comprises a base body, a charging seat and a battery pack assembly; the base body is used for being electrically connected with a head assembly, and a battery pack containing cavity is formed in the base body. The battery pack assembly is detachably installed in the battery pack containing cavity and electrically connected with the base body so as to supply power to the base body. The charging base is electrically connected with the base body and the battery pack assembly so as to supply power to the base body and / or the battery pack assembly through the charging base. The electric fan base and the electric fan are used for enriching use scenes of the electric fan and enriching acceptable power supply types of the electric fan.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to an AC / DC dual-purpose electric fan base and an electric fan. Background Art

[0002] Electric fans are common household appliances that generate wind by converting electrical energy into mechanical energy that drives the blades to rotate. Traditional electric fans are connected to a socket through a connector to connect to the household AC power to operate, but this type of electric fan is limited by the length of the wire connected to the connector and can only be moved within a small space from the socket, limiting its usage scenarios.

[0003] Another existing electric fan is powered by a battery pack, which can be used in a wireless scenario without being limited by the length of the wire. However, when this electric fan is not used for a long time, the battery pack is easily starved, resulting in the battery pack being unable to supply power to the electric fan and causing the electric fan to be unusable. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides an AC / DC dual-purpose electric fan base and an electric fan, which are used to enrich the usage scenarios of the electric fan and enrich the types of power sources that the electric fan can accept.

[0005] The utility model is realized by the following technical solutions:

[0006] An AC / DC dual-purpose electric fan base, comprising:

[0007] A base body, used for being electrically connected to the head assembly, and the base body is provided with a battery pack accommodating cavity;

[0008] A battery pack assembly is detachably mounted in the battery pack accommodating cavity and is electrically connected to the base body to supply power to the base body;

[0009] A charging base is electrically connected to the base body and the battery pack assembly respectively, so as to supply power to the base body and / or the battery pack assembly through the charging base.

[0010] Furthermore, the battery pack assembly is provided with a charging interface, and the charging interface is connected to an external power supply device so that the battery pack assembly can store electrical energy supplied by the external power supply device;

[0011] The charging base is provided with a socket, and the socket is connected to an external power supply device to supply power to the base body and / or the battery pack assembly.

[0012] Furthermore, the base body is provided with a recessed cavity for accommodating the charging seat, and the charging seat is detachably accommodated in the recessed cavity.

[0013] Furthermore, the socket and the charging interface have the same structure to accommodate the same external power supply device.

[0014] Furthermore, the base body is provided with a second elastic member capable of extending into the battery pack accommodating cavity;

[0015] When the battery pack assembly is installed in the battery pack accommodating cavity of the base body, the battery pack assembly abuts against and presses the second elastic member along the insertion direction of the battery pack assembly;

[0016] When the battery pack assembly needs to be separated from the base body, the second elastic member rebounds and drives the battery pack assembly to pop out.

[0017] Furthermore, the base body is provided with a mounting groove communicating with the battery pack accommodating cavity, and the base body also includes a release button at least partly mounted in the mounting groove; the battery pack assembly includes a hook;

[0018] When the battery pack assembly is installed in the battery pack accommodating cavity of the base body, the hook extends into the installation groove, and the wall of the installation groove restricts the hook from moving along the direction in which the battery pack assembly is inserted into the base body;

[0019] When the battery pack assembly needs to be separated from the base body, the release button is pressed, and the release button abuts against the hook and drives the hook to move out of the installation slot.

[0020] Furthermore, the release button includes a relative pressing end face and an extrusion end face, the pressing end face is exposed to the outside, and the extrusion end face is arranged opposite to the hook; a connecting end face is arranged at one end of the hook adjacent to the release button, and the connecting end face is used to abut against the extrusion end face; wherein the shape of the extrusion end face is adapted to the shape of the connecting end face.

[0021] Furthermore, the release button is provided with a first guide bevel adjacent to the extrusion end face, and the first guide bevel is arranged on the side of the release button facing the interior of the base body; the hook is provided with a second guide bevel adjacent to the connection end face, and the second guide bevel is arranged on the side of the hook facing the interior of the base body; the first guide bevel and the second guide bevel are used to guide the installation of the hook.

[0022] Furthermore, the base body is provided with a mounting seat, and the release button is provided with a rotating shaft, and the rotating shaft is rotatably mounted on the mounting seat; when the release button is pressed, the extrusion end face rotates around the rotating shaft.

[0023] Furthermore, a pair of rotating shafts are provided, and the pair of rotating shafts are distributed on opposite sides of the release button; the spacing between the rotating shafts along the axial direction of the rotating shafts is greater than the maximum length of the pressing end surface along the axial direction of the rotating shafts.

[0024] Furthermore, it also includes a first elastic member, one end of which abuts against the base body, and the other end of which abuts against the release button, so that the first elastic member can cause the release button to reset after being pressed.

[0025] Furthermore, when the battery pack assembly is installed on the base body, the clamping length of the hook extending into the installation groove is 5 to 30 times the clamping depth of the hook extending into the installation groove, and the clamping length of the hook extending into the installation groove is greater than 5 mm.

[0026] Furthermore, the engaging depth of the hook extending into the installation groove is 1.4 to 1.8 mm; the engaging length of the hook extending into the installation groove is 19 to 20 mm.

[0027] Furthermore, a bottom wall forming the battery pack accommodating cavity is formed with a convex rib extending along the insertion direction of the battery pack assembly, and the convex rib is used to abut and support the battery pack assembly.

[0028] Furthermore, the base body is provided with a first magnetic connection portion exposed to the recessed cavity, and the charging stand is provided with a second magnetic connection portion; when the charging stand is accommodated in the recessed cavity, the first magnetic connection portion and the second magnetic connection portion are magnetically matched and electrically connected.

[0029] Furthermore, the base body is also provided with a digital display module, and the digital display module is used to display the parameters of the electric fan.

[0030] An electric fan, comprising:

[0031] A fan base of any of the above;

[0032] A support rod unit, mounted on the electric fan base;

[0033] The head assembly comprises a fan disc unit for generating wind force, and the head assembly is installed on the support rod unit.

[0034] Compared with the prior art, the advantages of the present invention include at least:

[0035] By adopting a charging stand and a battery pack assembly, the base of the electric fan can be used for both AC and DC power, enriching the types of power sources that the electric fan can accept; moreover, the charging stand can be suitable for indoor spaces that support connecting wires for power supply, and the battery pack assembly can be used in wireless scenarios such as outdoors, with flexible application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic structural diagram of an electric fan according to an embodiment of the utility model;

[0037] Figure 2 This is an exploded schematic diagram of an electric fan base according to an embodiment of the utility model;

[0038] Figure 3 This is an exploded schematic diagram of an electric fan base in another state according to an embodiment of the utility model;

[0039] Figure 4 A partial cross-sectional view of an electric fan base according to an embodiment of the utility model;

[0040] Figure 5 Another partial cross-sectional view of the electric fan base according to an embodiment of the utility model;

[0041] Figure 6 It is a partial schematic diagram of a part of the structure of an electric fan base according to an embodiment of the utility model;

[0042] Figure 7 An exploded view of some parts of an electric fan base according to an embodiment of the utility model;

[0043] Figure 8 This is a schematic structural diagram of a release button according to an embodiment of the utility model;

[0044] Fig. 9 This is another partial cross-sectional view of the electric fan base according to an embodiment of the utility model.

[0045] In the figure: 1. electric fan base; 11. base body; 111. battery pack accommodating chamber; 112. mounting slot; 113. release button; 1131. pressing end face; 1132. extrusion end face; 1133. first guide slope; 1134. rotating shaft; 114. mounting seat; 115. second elastic member; 116. recessed chamber; 1161. first magnetic connection part; 117. convex rib; 118. spring block; 12. charging seat; 121. second magnetic connection part; 122. socket; 13. battery pack assembly; 131. charging interface; 132. hook; 1321. connecting end face; 1322. second guide slope; 133. third elastic member; 134. accommodating chamber; 14. first elastic member; 15. digital display module; 2. support rod unit; 3. head assembly; 31. fan disk unit. DETAILED DESCRIPTION

[0046] The following is a further non-restrictive detailed description of the utility model technical solution in conjunction with the preferred embodiment and its accompanying drawings. In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings. In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and cannot be understood as limitations on the utility model.

[0047] like Figure 2 As shown, an AC / DC dual-purpose electric fan base 1 corresponding to a preferred embodiment of the utility model includes a base body 11, a charging seat 12 and a battery pack assembly 13, and may also include a digital display module 15. The charging seat 12 and the battery pack assembly 13 can both be electrically connected to the base body 11 and used to power the base body 11, so that the base body 11 can supply power to the head assembly 3 of the electric fan to drive the fan blades to rotate. At the same time, the base body 11 can be powered only by the charging seat 12, or the base body 11 can be powered only by the battery pack assembly 13, or the battery pack assembly 13 and the base body 11 can be powered at the same time by the charging seat 12. The battery pack assembly 13 can store electric energy in advance and supply electricity to the base body 11 when needed, and the charging base 12 can supply power to the base body 11 and / or the battery pack assembly 13 through an external power supply device, that is, when the charging base 12 is connected to an external power supply device, the head assembly 3 is powered by the charging base 12 instead of the battery pack assembly 13; at the same time, the battery pack assembly 13 can also be charged through the charging base 12. The battery pack assembly 13 can also be removed from the base body 11 for charging and replacement, and at this time, only the head assembly 3 needs to be powered.

[0048] Usually, the battery pack assembly 13 provides direct current, and the external power supply can provide direct current or alternating current. Specifically, the external power supply can be an electrical device with an AC / DC conversion function, such as a power adapter, etc. Usually in this case, the external power supply is connected to the AC mains, and converts it into direct current through its AC / DC conversion function, and provides it to the base body 11 and / or the battery pack assembly 13 through the charging seat 12. The external power supply can also be a device that provides direct current, and directly supplies power without AC / DC conversion. The battery pack assembly 13 can be installed on the base body 11 or removed from the base body 11 to store the electrical energy supplied by the external power supply device.

[0049] Specifically, the charging base 12 is provided with a socket 122, and an external power supply device can be connected to the socket 122 to supply power to the base body 11 and the battery pack assembly 13, that is, the battery pack assembly 13 is charged while driving the fan blades to rotate. After the battery pack assembly 13 is fully charged or the battery pack assembly 13 is removed from the base body 11 for independent charging and replacement, the external power supply device only supplies power to the head assembly 3 to drive the fan blades to rotate.

[0050] The charging stand 12 and the base body 11 may be integrated or detachably connected to facilitate flexible use by the user; as a preferred embodiment, the charging stand 12 and the base body 11 are detachably connected (to be described later).

[0051] The base body 11 may be provided with a battery pack accommodating cavity 111 for accommodating the battery pack assembly 13, and the base body 11 may include electrode contacts exposed in the battery pack accommodating cavity 111. When the base body 11 is connected to the battery pack assembly 13, the electrode contacts in the base body 11 may contact the electrode sheets in the battery pack assembly 13 to achieve electrical connection between the base body 11 and the battery pack assembly 13.

[0052] Further references Figure 4 and Figure 7 , the base body 11 and the battery pack assembly 13 are detachably connected. Specifically, the base body 11 can be snap-fitted with the battery pack assembly 13. The base body 11 is provided with a mounting groove 112 connected to the battery pack accommodating cavity 111, and the base body 11 also includes a release button 113 at least partially installed in the mounting groove 112. The release button 113 can move in the mounting groove 112 when driven by an external force. For example, one end of the release button 113 can be exposed to the outside world, and the end face of the release button 113 that can be exposed to the outside world forms a pressing end face 1131, and the user can drive the release button 113 by pressing the pressing end face 1131; the end face of the release button 113 facing the mounting groove 112 forms an extrusion end face 1132, and the extrusion end face 1132 is used to contact the battery pack assembly 13.

[0053] Correspondingly, the battery pack assembly 13 may include a hook 132. When the battery pack assembly 13 is installed in the battery pack accommodating cavity 111 of the base body 11, the hook 132 may extend into the mounting groove 112, forming a wall of the mounting groove 112 to limit the hook 132 from moving in the direction of the battery pack assembly 13 being inserted into the base body 11, so as to achieve the clamping connection between the battery pack assembly 13 and the base body 11; one end of the hook 132 extending into the mounting groove 112 may form a connecting end face 1321 for cooperating with the extrusion end face 1132 of the release button 113. When the battery pack assembly 13 needs to be separated from the base body 11, the release button 113 can be pressed. After being pressed, the release button 113 will move toward the hook 132, and the extrusion end face 1132 of the release button 113 will abut against the connection end face 1321 of the hook 132 and drive the hook 132 to move, so that the release button 113 can drive the hook 132 to move out of the installation slot 112. At this time, the hook 132 is not restricted by the wall forming the installation slot 112, and the battery pack assembly 13 can be taken out from the battery pack accommodating cavity 111. Among them, the battery pack assembly 13 can be provided with a charging interface 131. After the battery pack assembly 13 is taken out, an external power supply device can be connected to the charging interface 131 to charge the battery pack assembly 13. The external power supply device can be a power adapter that can be connected to household AC power and is compatible with the battery pack. The socket and the charging interface 131 have the same structure to accommodate external power supply devices of the same model.

[0054] Further references Figure 4 and Figure 5Due to the limited longitudinal and transverse dimensions and space in the base body 11, after the hook 132 extends into the mounting groove 112, if the ratio of the engaging length D2 of the hook 132 extending into the mounting groove 112 to the engaging depth D1 of the hook 132 extending into the mounting groove 112 is small, it will affect the smoothness of the release button 113 when pressing to release the battery pack assembly 13. If the ratio of the engaging length D2 of the hook 132 extending into the mounting groove 112 to the engaging depth D1 of the hook 132 extending into the mounting groove 112 is large, it will affect the stability of the engagement between the battery pack assembly 13 and the base body 11. In order to take into account both the smoothness of pressing the release button 113 and the stability of the clamping between the battery pack assembly 13 and the base body 11, the ratio of the clamping length D2 of the portion of the hook 132 extending into the mounting groove 112 to the clamping depth D1 of the hook 132 extending into the mounting groove 112 is 5 to 30:1, that is, the clamping length D2 of the portion of the hook 132 extending into the mounting groove 112 is 5 to 30 times the clamping depth D1 of the hook 132 extending into the mounting groove 112, and the clamping length D2 of the portion of the hook 132 extending into the mounting groove 112 is greater than 5mm. Specifically, the clamping depth D1 of the hook 132 extending into the mounting groove 112 is 1.4 to 1.8mm, preferably 1.6mm; the clamping length D2 of the portion of the hook 132 extending into the mounting groove 112 is 19 to 20mm, preferably 19.5mm.

[0055] In order to enable the release button 113 to effectively squeeze and drive the hook 132 to move, the area of ​​the extrusion end face 1132 of the release button 113 is similar to that of the connecting end face 1321 of the hook 132, for example, the area of ​​the extrusion end face 1132 is 0.8 to 1.2 times the area of ​​the connecting end face 1321; and the shape of the extrusion end face 1132 is adapted to the shape of the connecting end face 1321, that is, the shape of the extrusion end face 1132 is the same as or similar to that of the connecting end face 1321.

[0056] To facilitate the release button 113 to drive the hook 132, when the battery pack assembly 13 is installed in the battery pack accommodating cavity 111 of the base body 11, the hook 132 is abutted against or arranged adjacent to the release button 113, so that when the release button 113 is pressed, the hook 132 can be driven immediately or can be driven after moving a small distance. Preferably, when the battery pack assembly 13 is installed in the battery pack accommodating cavity 111 of the base body 11, the hook 132 is abutted against the release button 113.

[0057] Further references Figure 4In order to allow the hook 132 to automatically extend into the mounting groove 112 to complete the engagement when it moves to the mounting groove 112, the battery pack assembly 13 may include a third elastic member 133 and a receiving cavity 134 for accommodating the third elastic member 133 and the hook 132. One end of the third elastic member 133 abuts against the bottom wall of the receiving cavity 134, and the other end abuts against the hook 132. When the battery pack assembly 13 needs to be installed in the battery pack receiving cavity 111 of the base body 11, the hook 132 can be pressed until it is completely received in the receiving cavity 134, and the hook 132 will drive the third elastic member 133 to compress; when the battery pack assembly 13 is inserted into the battery pack receiving cavity 111, the third elastic member 133 drives the hook 132 to pop out, and when the hook 132 moves to the installation groove 112, the hook 132 can be driven by the third elastic member 133 to pop out and automatically extend into the installation groove 112, so as to realize the connection between the battery pack assembly 13 and the base body 11. The third elastic member 133 can be a spring.

[0058] Further references Figure 7 In order to make the installation of the battery pack assembly 13 smoother, the release button 113 is provided with a first guide slope 1133 adjacent to the extrusion end surface 1132, and the first guide slope 1133 is provided on the side of the release button 113 facing the inside of the base body 11. The hook 132 may also be provided with a second guide slope 1322 adjacent to the connection end surface 1321, and the second guide slope 1322 may be provided on the side of the hook 132 facing the inside of the base body 11. When the battery pack assembly 13 is installed in the battery pack accommodating cavity 111, the second guide bevel 1322 can abut against the outer edge of the base body 11 and guide the hook 132 to retract into the accommodating cavity 134. When the hook 132 moves to the installation groove 112, the second guide bevel 1322 can guide the hook 132 to extend into the installation groove 112, and the first guide bevel 1133 can guide the hook 132 to move to the connecting end face 1321 and cooperate with the extruded end face 1132 of the release button 113, such as the connecting end face 1321 abuts against the extruded end face 1132 of the release button 113.

[0059] Further references Figure 2 In order to reduce the friction resistance when the battery pack assembly 13 is installed, the bottom wall of the battery pack accommodating cavity 111 is formed with a convex rib 117 extending along the insertion direction of the battery pack assembly 13. When the battery pack assembly 13 is inserted into the battery pack accommodating cavity 111, the battery pack assembly 13 abuts against the convex rib 117 and is supported by the convex rib 117. Therefore, the battery pack assembly 13 can only contact the convex rib 117 without contacting the bottom wall forming the battery pack accommodating cavity 111, so as to reduce the contact area between the battery pack assembly 13 and the base body 11, thereby reducing the friction resistance when the battery pack assembly 13 is installed.

[0060] Further references Figure 6 and Figure 8 Since the base body 11 is a relatively low structure, such as a disc-shaped structure, the space in the height direction of the base body 11 is limited. In order to reduce the space required for the pressing structure of the release button 113 in the height direction, the release button 113 can be rotated around a rotation axis 1134 when pressed. Specifically, the base body 11 is provided with a mounting seat 114, and the release button 113 is correspondingly provided with a rotation axis 1134. The rotation axis 1134 is rotatably mounted on the mounting seat 114, for example, the mounting seat 114 is provided with a rotation hole, and the rotation axis 1134 is inserted into the rotation hole of the mounting seat 114 and can rotate in the rotation hole. When the release button 113 is pressed, the extrusion end face 1132 will rotate around the rotation axis 1134 and squeeze the hook 132 to move. Among them, the mounting seat 114 and the rotation axis 1134 can be provided with a pair, and the base and the rotation axis 1134 are connected one by one. A pair of rotating shafts 1134 can be distributed on opposite sides of the release button 113, and a pair of mounting seats 114 can be correspondingly distributed on opposite sides of the release button 113. In addition, to ensure that when the release button 113 is pressed, the release button 113 rotates without shaking, the spacing D3 of the pair of rotating shafts 1134 along the axial direction of the rotating shafts 1134 is greater than the maximum length D4 of the pressing end surface 1131 along the axial direction of the rotating shafts 1134, so that the two rotating shafts 1134 are more stable and the rotating shafts 1134 rotate without shaking.

[0061] In order to realize the reset of the release button 113 after being pressed, the release button 113 may be connected to a reset structure. Specifically, the reset structure may include a first elastic member 14, one end of the first elastic member 14 abuts against the base body 11, and the other end of the first elastic member 14 abuts against the release button 113. When the release button 113 is pressed, the first elastic member 14 is squeezed at the same time. When the release button 113 is released, the first elastic member 14 rebounds to drive the release button 113 to reset. Specifically, the first elastic member 14 may be a spring.

[0062] Further references Fig. 9 In order to enable the battery pack assembly 13 to automatically pop out after the release button 113 is pressed, the base body 11 is provided with a reset assembly, which at least includes a second elastic member 115 that can extend into the battery pack accommodating cavity 111. When the battery pack assembly 13 is installed in the battery pack accommodating cavity 111 of the base body 11, the battery pack assembly 13 will abut against and squeeze the second elastic member 115 along the insertion direction of the battery pack assembly 13. When the battery pack assembly 13 is engaged with the base body 11, the position of the battery pack assembly 13 is fixed and the state of squeezing the second elastic member 115 is maintained. When the battery pack assembly 13 needs to be separated from the base body 11, the battery pack assembly 13 and the base body 11 are released from the engaged state, and the second elastic member 115 will rebound and drive the battery pack assembly 13 to pop out.

[0063] In order to improve the stability of the battery pack assembly 13 when in contact with the reset assembly, the reset assembly may further include a spring block 118. The spring block 118 may be formed with a contact end face that abuts against the battery pack assembly 13. The second elastic member 115 abuts against the spring block 118. The spring block 118 abuts against the battery pack assembly 13, so that the second elastic member 115 can drive the battery pack assembly 13 to pop out when it rebounds. The contact end face of the spring block 118 has a large area to improve the stability of the battery pack assembly 13 when in contact with the reset assembly. For example, the size of the spring block 118 along the height direction of the base body 11 may be slightly smaller than the size of the battery pack assembly 13 along the height direction of the base body 11. The reset assembly is preferably provided in a pair, the pair of reset assemblies are in contact with opposite sides of the battery pack assembly 13, and the pair of reset assemblies are symmetrically distributed relative to the center position of the battery pack assembly 13 to apply a uniformly distributed elastic force to the battery pack assembly 13. The elastic force exerted by the second elastic member 115 on the battery pack assembly 13 when rebounding must at least overcome the friction force when the battery pack assembly 13 moves and the insertion and removal force during the insertion and removal of the battery pack assembly 13 to ensure that the battery pack assembly 13 can be ejected. The second elastic member 115 can be a spring.

[0064] Further references Figure 2 The charging base 12 is provided with a charging interface 131 so that the charging base 12 can be connected to an external power supply device, such as a power adapter. The charging interface 131 of the charging base 12 can be of the same type as the charging interface 131 of the battery pack assembly 13, so the charging base 12 and the battery pack assembly 13 can be adapted to the same power adapter.

[0065] Further references Figure 3 In order to facilitate the installation of the charging seat 12, the base body 11 is provided with a recessed cavity 116 for accommodating the charging seat 12, so as to facilitate the installation of the charging seat 12. The recessed cavity 116 can be formed with a bottom recess of the base body 11 for contacting the ground. When the base body 11 needs to be connected with the charging seat 12, the base body 11 can be lifted, and the recessed cavity 116 can be placed above the charging seat 12, and then the base body 11 can be put down to achieve the connection between the charging seat 12 and the base body 11. Among them, the base body 11 can be provided with a first magnetic connection part 1161 exposed to the recessed cavity 116, and the charging seat 12 is correspondingly provided with a second magnetic connection part 121. When the charging seat 12 is accommodated in the recessed cavity 116, the first magnetic connection part 1161 and the second magnetic connection part 121 are magnetically matched and electrically connected to achieve the electrical connection between the charging seat 12 and the base body 11.

[0066] Further references Figure 1The digital display module 15 is used to display the parameters of the electric fan, for example, the power level of the battery pack assembly 13 in the electric fan, the long-distance status of the electric fan and other parameters. The digital display module 15 of some existing electric fans is installed on the head assembly 3. Since the head assembly 3 rotates or swings up and down to adjust the wind direction during movement, the digital display module 15 may move to a position that is not easy to observe. The present application installs the digital display module 15 on the base body 11, so that the position of the digital display module 15 can be kept fixed and will not move with the head assembly 3, which is convenient for users to observe.

[0067] like Figure 1 As shown, the present application also provides an electric fan, including a support rod unit 2, a head assembly 3 and the above-mentioned electric fan base 1.

[0068] The head assembly 3 can be installed with the support rod unit 2; the head assembly 3 can rotate 360 ​​degrees in the horizontal direction and adjust the pitch angle of 90 degrees in the height direction. The head assembly 3 includes a fan disk unit 31 and an electric control unit. The fan disk unit 31 includes a plurality of fan blades. The electric control unit may include a motor and a control board, and the electric control unit may be connected to the base body 11 so that the base body 11 can supply power to the electric control unit. The electric control unit can drive the fan blades in the fan disk unit 31 to rotate, thereby generating wind force.

[0069] The support rod unit 2 is installed on the electric fan base 1 and is used to support the head assembly 3. The support rod unit 2 may include a plurality of support rods. The plurality of support rods may be stacked in sequence along the axial direction of the support rods, and adjacent support rods may be retractable structures to achieve adjustment of the height of the support rod unit 2, and / or, the plurality of support rods may be detachable structures, and the support rod unit 2 of the required height is formed by selecting the required number of support rods to be stacked and installed. By adjusting the height of the support rod unit 2, the height of the head assembly 3 can be adjusted to meet different usage requirements. In addition, the support rod unit 2 may be provided with a wiring channel, and the electric fan base 1 may be electrically connected to the head assembly 3 through the wires in the wiring channel.

[0070] In this embodiment, when the electric fan is in a location with a power supply such as a socket indoors, a power adapter can be used to connect to the charging stand 12, and the base body 11 can be connected to the charging stand 12. At this time, the charging stand 12 can supply AC power to the base body 11 as a driving power source for the electric fan. When the electric fan is working outdoors or in a location where a power adapter cannot be connected, the battery pack assembly 13 can supply DC power to the base body 11 as a driving power source for the electric fan. Therefore, the electric fan can be used in different situations such as indoors and outdoors, enriching the use scenarios of the electric fan. In addition, the electric fan can be operated with DC or AC power to enrich the types of power sources that the electric fan can accept. When the battery pack assembly 13 is not used for a long time and is starved to death, the electric fan can still be supplied with power through the charging stand 12, and the battery pack assembly 13 can be removed for charging or replacement.

[0071] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An AC / DC dual-purpose electric fan base, characterized in that: It includes: A base body (11) is used to be electrically connected to the head assembly (3), and the base body (11) is provided with a battery pack accommodating cavity (111); A battery pack assembly (13) is detachably mounted in the battery pack accommodating cavity (111) and is electrically connected to the base body (11) to supply power to the base body (11); A charging seat (12) is electrically connected to the base body (11) and the battery pack assembly (13) respectively, so as to supply power to the base body (11) and / or the battery pack assembly (13) through the charging seat (12).

2. The electric fan base according to claim 1, characterized in that: The battery pack assembly (13) is provided with a charging interface (131), and the charging interface (131) is connected to an external power supply device, so that the battery pack assembly (13) can store electric energy supplied by the external power supply device; The charging seat (12) is provided with a socket (122), and the socket (122) is connected to an external power supply device to supply power to the base body (11) and / or the battery pack assembly (13).

3. The electric fan base according to claim 1, characterized in that: The base body (11) is provided with a recessed cavity (116) for accommodating the charging seat (12); the charging seat (12) is detachably accommodated in the recessed cavity (116).

4. The electric fan base according to claim 2, characterized in that: The socket (122) and the charging interface (131) have the same structure so as to accommodate the same external power supply device.

5. The electric fan base according to claim 3, characterized in that: The base body (11) is provided with a second elastic member (115) capable of extending into the battery pack accommodating cavity (111); When the battery pack assembly (13) is installed in the battery pack accommodating cavity (111) of the base body (11), the battery pack assembly (13) abuts against and presses the second elastic member (115) along the insertion direction of the battery pack assembly (13); When the battery pack assembly (13) needs to be separated from the base body (11), the second elastic member (115) rebounds and drives the battery pack assembly (13) to pop out.

6. The electric fan base according to claim 2, characterized in that: The base body (11) is provided with a mounting groove (112) communicating with the battery pack accommodating cavity (111), and the base body (11) further comprises a release button (113) at least part of which is mounted in the mounting groove (112); the battery pack assembly (13) comprises a hook (132); When the battery pack assembly (13) is installed in the battery pack accommodating cavity (111) of the base body (11), the hook (132) extends into the installation groove (112), forming a wall of the installation groove (112) to restrict the hook (132) from moving along the direction in which the battery pack assembly (13) is inserted into the base body (11); When the battery pack assembly (13) needs to be separated from the base body (11), the release button (113) is pressed, and the release button (113) abuts against the hook (132) and drives the hook (132) to move out of the installation slot (112).

7. The electric fan base according to claim 6, characterized in that: The release button (113) comprises a pressing end face (1131) and an extruding end face (1132) opposite to each other, the pressing end face (1131) being exposed to the outside, and the extruding end face (1132) being arranged opposite to the hook (132); a connecting end face (1321) is arranged at one end of the hook (132) adjacent to the release button (113), and the connecting end face (1321) is used for abutting against the extruding end face (1132); wherein the shape of the extruding end face (1132) is adapted to the shape of the connecting end face (1321).

8. The electric fan base according to claim 7, characterized in that: The release button (113) is provided with a first guiding bevel (1133) adjacent to the extrusion end surface (1132), and the first guiding bevel (1133) is arranged on a side of the release button (113) facing the inside of the base body (11); the hook (132) is provided with a second guiding bevel (1322) adjacent to the connection end surface (1321), and the second guiding bevel (1322) is arranged on a side of the hook (132) facing the inside of the base body (11); the first guiding bevel (1133) and the second guiding bevel (1322) are used to guide the installation of the hook (132).

9. The electric fan base according to claim 7, characterized in that: The base body (11) is provided with a mounting seat (114), and the release button (113) is provided with a rotating shaft (1134), and the rotating shaft (1134) is rotatably mounted on the mounting seat (114); when the release button (113) is pressed, the extrusion end surface (1132) rotates around the rotating shaft (1134).

10. The electric fan base according to claim 9, characterized in that: A pair of the rotating shafts (1134) are provided, and the pair of the rotating shafts (1134) are distributed on opposite sides of the release button (113); the axial spacing (D3) of the rotating shafts (1134) is greater than the maximum length (D4) of the pressing end surface (1131) along the axial direction of the rotating shaft (1134).

11. The electric fan base according to claim 9, characterized in that: It also includes a first elastic member (14), one end of the first elastic member (14) abutting against the base body (11), and the other end of the first elastic member (14) abutting against the release button (113), so that the first elastic member (14) can cause the release button (113) to reset after being pressed.

12. The electric fan base according to claim 6, characterized in that: When the battery pack assembly (13) is installed on the base body (11), the clamping length (D2) of the portion of the clamping hook (132) extending into the installation groove (112) is 5 to 30 times the clamping depth (D1) of the clamping hook (132) extending into the installation groove (112), and the clamping length (D2) of the portion of the clamping hook (132) extending into the installation groove (112) is greater than 5 mm.

13. The electric fan base according to claim 12, characterized in that: The engaging depth (D1) of the hook (132) extending into the installation groove (112) is 1.4 to 1.8 mm; and the engaging length (D2) of the portion of the hook (132) extending into the installation groove (112) is 19 to 20 mm.

14. The electric fan base according to claim 1, characterized in that: A convex rib (117) extending along the insertion direction of the battery pack assembly (13) is formed on the bottom wall forming the battery pack accommodating cavity (111), and the convex rib (117) is used to abut and support the battery pack assembly (13).

15. The electric fan base according to claim 3, characterized in that: The base body (11) is provided with a first magnetic connection portion (1161) exposed to the recessed cavity (116), and the charging seat (12) is provided with a second magnetic connection portion (121); when the charging seat (12) is accommodated in the recessed cavity (116), the first magnetic connection portion (1161) and the second magnetic connection portion (121) are magnetically matched and electrically connected.

16. The electric fan base according to claim 1, characterized in that: The base body (11) is also provided with a digital display module (15), and the digital display module (15) is used to display parameters of the electric fan.

17. An electric fan, characterized in that: It includes: The electric fan base (1) according to any one of claims 1 to 16; A support rod unit (2) mounted on the electric fan base (1); A head assembly (3) comprises a fan disc unit (31) for generating wind force, and the head assembly (3) is mounted on the support rod unit (2).

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