An electric fan

Abstract

An electric fan provided by the present invention includes: a first bracket adapted to be fixedly connected to the body; a second bracket adapted to be fixedly connected to the fan head, and the second bracket is rotatably connected to the first bracket through a hinge shaft; a fastener for fixing the second bracket on the hinge shaft; a limiting member connected to the first bracket and located between the first bracket and the fastener, for limiting the distance between the fastener and the first bracket. The second bracket is limited between the first bracket and the limiting member. By connecting the limiting member to the first bracket, the first limiting member is located between the first bracket and the fastener, and the distance between the fastener and the first bracket is limited, so that the position of the second bracket fixed by the fastener is fixed, thereby ensuring the torque for locking the second bracket. For electric fans of the same model, the magnitude of the torque for locking the second bracket is stable.

Description

Technical Field

[0001] The present invention relates to the technical field of electric fans, and particularly to an electric fan. Background Art

[0002] Currently, the main components of an electric fan include three major parts: a head assembly, a body, and a support assembly. The head assembly further includes a motor, a motor housing, a fan blade, a pitching mechanism, and a shaking mechanism. The pitching mechanism connects the motor housing and the body and is mainly composed of marbles, torsion springs, and springs. The torsion springs and springs are extremely prone to mechanical fatigue during use, resulting in the positioning failure or damage of the pitching mechanism, and the assembly process is also relatively complex. In the prior art, a gasket + rotating shaft + bolt is used to lock the bracket for installing the motor housing and the fan blade after adjusting the pitching angle. When manually locking the bolt, it is difficult to control the torque magnitude. Sometimes the torque is too large and sometimes too small. When the torque is too large, the bracket contacts the body too tightly and it is difficult to perform pitching adjustment again. When the torque is too small, it is difficult to fix the bracket. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that it is difficult to control the torque for locking the bracket for installing the motor housing and the fan blade, so as to provide an electric fan that can ensure the torque for locking the bracket.

[0004] To solve the above technical problem, an electric fan provided by the present invention includes:

[0005] A first bracket, adapted to be fixedly connected to the body;

[0006] A second bracket, adapted to be fixedly connected to the fan head, and the second bracket is rotatably connected to the first bracket through a hinge shaft;

[0007] A fastener, used to fix the second bracket on the hinge shaft;

[0008] A limiting member, connected to the first bracket and located between the first bracket and the fastener, for limiting the distance between the fastener and the first bracket, and the second bracket is limited between the first bracket and the limiting member.

[0009] The limiting member includes a limiting body and at least one first connecting arm extending from the side of the limiting body towards the first bracket, and the first connecting arm is connected to the first bracket.

[0010] There are two first connecting arms, and they are symmetrically arranged on both sides of the limiting body.

[0011] A first connecting hole is provided on the first bracket, and the first connecting arm is inserted into the first connecting hole.

[0012] It further includes a first anti-slip member disposed between the first bracket and the second bracket.

[0013] The first anti-slip member includes an anti-slip body that is in surface contact with the first bracket and the second bracket respectively, and at least one second connecting arm that extends from the side of the anti-slip body towards the first bracket, and the second connecting arm is connected to the first bracket.

[0014] There are two second connecting arms, and they are symmetrically distributed on both sides of the anti-slip body.

[0015] The first bracket is provided with a second connecting hole, and the second connecting arm is inserted into the second connecting hole.

[0016] The anti-slip body is provided with a plurality of grooves or through holes.

[0017] It further includes a first support assembly adapted to be supported between the second bracket and the limiting member, and the limiting body is connected between the first support assembly and the fastener.

[0018] The first support assembly includes:

[0019] A second anti-slip member in surface contact with the second bracket;

[0020] A plurality of gaskets are provided between the second anti-slip member and the limiting body.

[0021] The surface of the second anti-slip member opposite to the second bracket is provided with a plurality of grooves or through holes.

[0022] The first bracket is provided with a limiting groove for limiting the rotation angle of the second bracket. The second bracket includes a connecting portion parallel to the hinge shaft, and the connecting portion is clamped into the limiting groove.

[0023] The part of the hinge shaft connected to the fastener is provided with a thread, and the fastener is a nut.

[0024] The technical solution of the present invention has the following advantages:

[0025] 1. An electric fan provided by the present invention, by connecting a limiting member on the first bracket, the first limiting member is located between the first bracket and the fastener, and the distance between the fastener and the first bracket is limited, so that the position of the fastener for fixing the second bracket is fixed, thereby ensuring the torque for locking the second bracket. For electric fans of the same model, the torque for locking the second bracket is stable.

[0026] 2. An electric fan provided by the present invention, wherein the limiting member includes a limiting body and at least one first connecting arm extending from the side of the limiting body towards the first bracket. The first connecting arm is connected to the first bracket, and the position of the fastener can be determined according to the length of the first connecting arm, with simple assembly and high production efficiency.

[0027] 3. An electric fan provided by the present invention, wherein there are two first connecting arms, which are symmetrically arranged on both sides of the limiting body, so that the acting force of the fastener is uniform.

[0028] 4. An electric fan provided by the present invention, wherein a first connecting hole is provided on the first bracket, and the first connecting arm is inserted into the first connecting hole, which is convenient for positioning and installing the limiting member.

[0029] 5. An electric fan provided by the present invention further includes a first anti-slip member provided between the first bracket and the second bracket, which can prevent relative rotation between the first bracket and the second bracket after the fastener locks the second bracket.

[0030] 6. An electric fan provided by the present invention, wherein the first anti-slip member includes an anti-slip body that is in surface contact with the first bracket and the second bracket respectively, and at least one second connecting arm extending from the side of the anti-slip body towards the first bracket. The second connecting arm is connected to the first bracket, which is convenient for positioning and installing the first anti-slip member.

[0031] 7. An electric fan provided by the present invention, wherein there are two second connecting arms, which are symmetrically distributed on both sides of the anti-slip body. The first anti-slip member receives uniform friction and is more stable in installation on the first bracket.

[0032] 8. An electric fan provided by the present invention, wherein a second connecting hole is provided on the first bracket, and the second connecting arm is inserted into the second connecting hole, and the installation of the first anti-slip member is simple and convenient.

[0033] 9. An electric fan provided by the present invention, wherein a plurality of grooves or through holes are provided on the anti-slip body, which can increase the friction force so that the second bracket will not rotate automatically due to gravity.

[0034] 10. An electric fan provided by the present invention further includes a first support assembly adapted to support between the second bracket and the limiting member. The limiting body is connected between the first support assembly and the fastener. There is a gap between the second bracket and the limiting body, and the first support assembly can limit the second bracket between the limiting body and the first bracket.

[0035] 11. An electric fan provided by the present invention, wherein the first support assembly includes: a second anti-slip member in surface contact with the second bracket; a plurality of gaskets provided between the second anti-slip member and the limiting body. The number of gaskets can be adjusted according to the distance between the second anti-slip member and the limiting body, and the tightening force of the fastener can also be controlled according to the number of gaskets. The setting of the second anti-slip member can prevent the second member from automatically rotating due to gravity.

[0036] 12. An electric fan provided by the present invention, wherein a plurality of grooves or through holes are provided on the surface of the second anti-slip member opposite to the second bracket, which can increase the friction of the second anti-slip member.

[0037] 13. An electric fan provided by the present invention, wherein a limiting groove for limiting the rotation angle of the second bracket is provided on the first bracket. The second bracket includes a connecting portion parallel to the hinge shaft, and the connecting portion is snapped into the limiting groove, which can limit the rotation range of the second bracket relative to the first bracket.

[0038] 14. An electric fan provided by the present invention, wherein the portion of the hinge shaft connected to the fastener is provided with threads, and the fastener is a nut, which has a simple structure, is easy to assemble, and is convenient for users to assemble by themselves. Brief Description of the Drawings

[0039] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0040] Figure 1 It is a schematic diagram of a partial structure of an electric fan provided in the embodiment of the present invention;

[0041] Figure 2 For Figure 1 An exploded view of the electric fan shown;

[0042] Figure 3 For Figure 2 A schematic diagram of the structure of the first bracket of the electric fan shown;

[0043] Figure 4 For Figure 2 A schematic diagram of the structure of the second bracket of the electric fan shown;

[0044] Figure 5 For Figure 2 A schematic diagram of the structure of the limiting member of the electric fan shown;

[0045] Figure 6 The structural schematic diagram of the first anti-slip member of an electric fan shown Figure 2 in

[0046] Figure 7 The structural schematic diagram of the second anti-slip member of an electric fan shown Figure 2 in

[0047] Explanation of the reference numerals in the drawings:

[0048] 1 - First bracket; 2 - Second bracket; 3 - Hinge shaft; 4 - Fastener; 5 - Limiting member; 6 - First anti-slip member; 7 - Second anti-slip member; 8 - Spacer; 11 - First connection hole; 12 - Second connection hole; 13 - Limiting groove; 21 - Connection part; 51 - Limiting body; 52 - First connecting arm; 61 - Anti-slip body; 62 - Second connecting arm. Detailed implementation manners

[0049] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0050] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0052] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0053] Embodiment 1

[0054] This embodiment provides a specific implementation manner of an electric fan. As Figures 1 to 7 shown, it includes a first bracket 1, a second bracket 2, a fastener 4, and a limiting member 5.

[0055] Among them, the first bracket 1 is adapted to be fixedly connected to the fuselage. During the working process, the first bracket 1 remains stationary; the second bracket 2 is adapted to be fixedly connected to the fan head. The second bracket 2 is rotatably connected to the first bracket 1 through a hinge shaft 3. The fan head includes a motor for driving the fan blade to rotate and the fan blade. The rotation of the second bracket 2 specifically refers to the rotation within a certain angle range in the vertical plane; the fastener 4 is used to fix the second bracket 2 on the hinge shaft 3; the limiting member 5 is connected to the first bracket 1 and is located between the first bracket 1 and the fastener 4, and is used to limit the distance between the fastener 4 and the first bracket 1. The second bracket 2 is limited between the first bracket 1 and the limiting member 5.

[0056] In this embodiment, the limiting member 5 includes a limiting body 51 and at least one first connecting arm 52 extending from the side of the limiting body 51 towards the first bracket 1. The first connecting arm 52 is connected to the first bracket 1, and the position of the fastener 4 can be determined according to the length of the first connecting arm 52, with simple assembly and high production efficiency.

[0057] Specifically, as Figure 5 shown, there are two first connecting arms 52, and they are symmetrically arranged on both sides of the limiting body 51, so that the acting force of the fastener 4 is uniform.

[0058] A first connecting hole 11 is provided on the first bracket 1, and the first connecting arm 52 is inserted into the first connecting hole 11, which is convenient for the positioning and installation of the limiting member 5.

[0059] It further includes a first anti-slip member 6 provided between the first bracket 1 and the second bracket 2. The first anti-slip member 6 includes an anti-slip body 61 that is in surface contact with the first bracket 1 and the second bracket 2 respectively, and at least one second connecting arm 62 extending from the side of the anti-slip body 61 towards the first bracket 1. The second connecting arm 62 is connected to the first bracket 1, and it can prevent relative rotation between the first bracket 1 and the second bracket 2 after the fastener 4 locks the second bracket 2. The second connecting arm 62 is connected to the first bracket 1, which is convenient for the positioning and installation of the first anti-slip member 6.

[0060] Specifically, there are two second connecting arms 62, and they are symmetrically distributed on both sides of the anti-slip body 61. The first anti-slip member 6 receives uniform friction force and is more stable in installation on the first bracket 1.

[0061] The first bracket 1 is provided with a second connection hole 12, and the second connection arm 62 is inserted into the second connection hole 12. During installation, inserting the second connection arm 62 into the second connection hole 12 can complete the installation of the first anti-slip member 6, and the installation of the first anti-slip member 6 is simple and convenient.

[0062] The anti-slip body 61 is provided with a plurality of grooves or through holes, which can increase the friction force and prevent the second bracket 2 from automatically rotating due to gravity.

[0063] The electric fan of this embodiment further includes a first support assembly adapted to support between the second bracket 2 and the limiting member 5. The limiting body 51 is connected between the first support assembly and the fastener 4. There is a gap between the second bracket 2 and the limiting body 51, and the first support assembly can limit the second bracket 2 between the limiting body 51 and the first bracket 1.

[0064] Specifically, the first support assembly includes: a second anti-slip member 7 in surface contact with the second bracket 2; a plurality of gaskets 8 provided between the second anti-slip member 7 and the limiting body 51. The number of gaskets 8 can be adjusted according to the distance between the second anti-slip member 7 and the limiting body 51, and the tightening force of the fastener 4 can also be controlled according to the number of gaskets 8, so that the second bracket 2 can rotate relative to the first bracket 1 under the action of an external force and will not automatically rotate due to gravity in the natural state and maintain a fixed state. The setting of the second anti-slip member 7 can also prevent the second bracket from automatically rotating due to gravity.

[0065] The surface of the second anti-slip member 7 opposite to the second bracket 2 is provided with a plurality of grooves or through holes, which can increase the friction force of the second anti-slip member 7.

[0066] The first bracket 1 is provided with a limiting groove 13 for limiting the rotation angle of the second bracket 2. The second bracket 2 includes a connecting portion 21 parallel to the hinge shaft 3, and the connecting portion 21 is snapped into the limiting groove 13, which can limit the rotation range of the second bracket 2 relative to the first bracket 1.

[0067] The part of the hinge shaft 3 connected to the fastener 4 is provided with threads, and the fastener 4 is a nut, with a simple structure, convenient assembly, and easy for users to assemble by themselves.

[0068] During installation, insert the hinge shaft 3 through the central circular hole on the first bracket 1, leaving a gap between the hinge shaft 3 and the hole wall of the central circular hole. Then, thread the first anti-slip member 6 onto the hinge shaft 3, insert the second connecting arm 62 of the first anti-slip member 6 into the second connecting hole 12 on the first bracket 1. Next, pass the hinge shaft 3 through the central circular hole on the second bracket 2, and then thread the second anti-slip member 7 and the gasket 8 onto the hinge shaft 3 in sequence. Install the limiting member 5, making the limiting body 51 of the limiting member 5 abut against the gasket 8, and insert the first connecting arm 52 into the first connecting hole 11 on the first bracket. After adjusting the pitching angle of the second bracket 2, screw the nut to the position where it abuts against the limiting body 51. Since the first limiting member 5 is located between the first bracket 1 and the fastener 4, it limits the distance between the fastener 4 and the first bracket 1, so that the position of the fastener 4 for fixing the second bracket 2 is fixed, thus ensuring the torque for locking the second bracket 2. For electric fans of the same model, the torque for locking the second bracket 2 is stable. When the user needs to adjust the pitching angle of the fan, they can directly adjust the position of the second bracket 2 manually without loosening the nut, which is very convenient.

[0069] As the first alternative embodiment of the above embodiment, the fastener 4 and the hinge shaft 3 are connected in a clamping manner. A clamping groove is provided on the hinge shaft 3, and the fastener 4 is clamped in the clamping groove.

[0070] As the second alternative embodiment of the above embodiment, a limiting clamping groove is provided on the hinge shaft 3, and the second bracket 2 is clamped in the limiting clamping groove to limit the axial movement of the second bracket 2 on the hinge shaft 3.

[0071] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An electric fan, characterized in that, Comprising: A first bracket (1), adapted to be fixedly connected to the fuselage; A second bracket (2), adapted to be fixedly connected to the fan head, and the second bracket (2) is rotatably connected to the first bracket (1) through a hinge shaft (3); A fastener (4) for fixing the second bracket (2) on the hinge shaft (3); A limiting member (5), connected to the first bracket (1) and located between the first bracket (1) and the fastener (4), for defining the distance between the fastener (4) and the first bracket (1), and the second bracket (2) is limited between the first bracket (1) and the limiting member (5); The limiting member (5) includes a limiting body (51) and at least one first connecting arm (52) extending from the side of the limiting body (51) towards the first bracket (1), the first connecting arm (52) is connected to the first bracket (1), and a first connecting hole (11) is provided on the first bracket (1), and the first connecting arm (52) is inserted into the first connecting hole (11).

2. The electric fan according to claim 1, characterized in that There are two first connecting arms (52), and they are symmetrically arranged on both sides of the limiting body (51).

3. A ceiling fan according to claim 1, wherein, It further includes a first anti-slip member (6) provided between the first bracket (1) and the second bracket (2).

4. A ceiling fan according to claim 3, wherein, The first anti-slip member (6) includes an anti-slip body (61) in surface contact with the first bracket (1) and the second bracket (2) respectively, and at least one second connecting arm (62) extending from the side of the anti-slip body (61) towards the first bracket (1), and the second connecting arm (62) is connected to the first bracket (1).

5. A kind of electric fan according to claim 4, characterized in that, There are two second connecting arms (62), and they are symmetrically distributed on both sides of the anti-slip body (61).

6. A ceiling fan according to claim 4, wherein, A second connecting hole (12) is provided on the first bracket (1), and the second connecting arm (62) is inserted into the second connecting hole (12).

7. An electric fan according to claim 4, characterized in that, A plurality of grooves or through holes are provided on the anti-slip body (61).

8. A kind of electric fan according to claim 1, characterized in that, It further includes a first support assembly, adapted to support between the second bracket (2) and the limiting member (5), and the limiting body (51) is connected between the first support assembly and the fastener (4).

9. The electric fan according to claim 8, wherein The first support assembly includes: A second anti-slip member (7), in surface contact with the second bracket (2); A plurality of gaskets (8), provided between the second anti-slip member (7) and the limiting body (51).

10. An electric fan according to claim 9, characterized in that, A plurality of grooves or through holes are provided on the surface of the second anti-slip member (7) opposite to the second bracket (2).

11. A kind of electric fan according to claim 1, characterized in that, A limiting groove (13) for limiting the rotation angle of the second bracket (2) is provided on the first bracket (1), and the second bracket (2) includes a connecting portion (21) parallel to the hinge shaft (3), and the connecting portion (21) is snapped into the limiting groove (13).

12. A ceiling fan according to claim 1, wherein, The part of the hinge shaft (3) connected to the fastener (4) is threaded, and the fastener (4) is a nut.

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