Fan blade structure easy to disassemble

Abstract

The utility model discloses a fan blade structure easy to disassemble, which comprises a motor and fan blades, and a motor shaft of the motor is connected with the fan blades to drive the fan blades to rotate. The fan blade structure further comprises an elastic piece and a locking piece. The tail end of the motor shaft extends out of the fan blades and is used for being connected with the locking piece. The elastic piece is arranged between the fan blades and the locking piece, a retainer is arranged at the tail end of the motor shaft, a limiting part is arranged on the locking piece, and the pre-tightening force of the elastic piece drives the retainer to make contact with the limiting part so as to limit the locking piece to move in the direction away from the motor shaft. The fan blade is reasonable in structural design, simple and convenient to assemble and disassemble, and convenient to take out for cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to an easily detachable fan blade structure. Background Art

[0002] When the fan is used for a long time, dust in the air will adhere to the fan blade component, affecting the air supply effect of the fan. Therefore, the fan blade component often needs to be disassembled for cleaning.

[0003] The fan blade components in the prior art are usually fixed by threads, and special tools are needed during assembly and disassembly, which is inconvenient; and the threaded structure is also easy to hide dirt, which is troublesome to clean.

[0004] To this end, the utility model provides an easily detachable fan blade structure, which is convenient for users to disassemble and clean. Summary of the invention

[0005] The purpose of the utility model is to provide an easily detachable fan blade structure to solve the problems raised in the above background technology. To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A fan blade structure that is easily disassembled comprises a motor and a fan blade, wherein a motor shaft of the motor is connected to the fan blade to drive the fan blade to rotate; the fan blade structure also comprises an elastic member and a locking member; the end of the motor shaft extends out of the fan blade for connecting to the locking member; the elastic member is arranged between the fan blade and the locking member, a stop member is arranged at the end of the motor shaft, a limiting portion is arranged on the locking member, and the pre-tightening force of the elastic member drives the stop member to contact the limiting portion to limit the locking member from moving in a direction away from the motor shaft.

[0007] Furthermore, the motor shaft is provided with a flat portion connected to the fan blade, the fan blade is provided with a flat connection hole matched with the flat portion, and the flat portion is fixedly engaged with the flat connection hole.

[0008] Furthermore, the cross-section of the stop member is the same as that of the flattened portion, and an annular groove is provided between the stop member and the flattened portion; when the locking member moves toward the direction approaching the motor shaft until the limiting portion is aligned with the annular groove, the stop member is brought into contact with the limiting portion by rotating the locking member to limit the locking member from being away from the motor shaft.

[0009] Furthermore, the elastic member is a wave spring.

[0010] Furthermore, the elastic member is made of metal.

[0011] The beneficial effects of the utility model are as follows: the fan blade structure of the utility model is reasonably designed, and the assembly and disassembly are simple and convenient, so that the fan blades can be easily taken out for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 It is a structural schematic diagram of the motor in the utility model.

[0015] Figure 3 It is a structural schematic diagram of the fan blades in the utility model.

[0016] Figure 4 It is a structural schematic diagram of the locking member in the utility model.

[0017] Figure 5 It is a structural schematic diagram of the elastic member in the utility model.

[0018] Figure 6 It is a schematic diagram of the exploded structure of the utility model.

[0019] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0022] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in this utility model can be understood according to specific circumstances.

[0023] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0024] In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0025] It should also be understood that the terms used in the utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0026] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0027] like Figures 1 to 6 As shown, an easily detachable fan blade structure includes a motor 1 and a fan blade 2, wherein a motor shaft 11 of the motor 1 is connected to the fan blade 2 to drive the fan blade 2 to rotate; the fan blade structure also includes an elastic member 3 and a locking member 4; the end of the motor shaft 11 extends out of the fan blade 2 and is used to be connected to the locking member 4; the elastic member 3 is arranged between the fan blade 2 and the locking member 4, a stop member 111 is arranged at the end of the motor shaft 11, and a limiting portion 41 is arranged on the locking member 4, and the pre-tightening force of the elastic member 3 drives the stop member 111 to contact the limiting portion 41 to limit the locking member 4 from moving in a direction away from the motor shaft 11.

[0028] As an example, a connecting hole is provided at the axis position of the fan blade 2, and the motor shaft 11 passes through the connecting hole to connect with the fan blade 2. The motor shaft 11 is provided with a clamping portion 114 in contact with the bottom side of the fan blade 2, and the clamping portion 114 is used to limit the movement of the fan blade 2 to one side of the motor 1; the end of the motor shaft 11 extends out of the top side of the fan blade 2 and is connected and locked with the locking member 4, which is used to limit the movement of the fan blade 2 to the outside of the end; by limiting and fixing the upper and lower sides of the fan blade 2, the fan blade 2 and the motor shaft 11 are fixedly connected to prevent the fan blade 2 from moving up and down when rotating. A sleeve 22 structure extends upward from the side of the fan blade 2 close to the locking member 4, and the sleeve 22 is integrally formed with the fan blade 2. The elastic member 3 is sleeved outside the sleeve 22. When the locking member 4 is connected and locked with the motor shaft 11, the elastic member 3 is compressed, and the elastic member 3 provides a force for the locking member 4 to move in a direction away from the motor shaft 11. The motor shaft 11 and the locking member 4 are connected in the following manner: the locking member 4 is provided with a through hole 42 for being installed on the motor shaft 11, and a limiting portion 41 is provided at the top of the locking member 4 at the opening of the through hole 42; during assembly, the end of the motor shaft 11 is inserted into the through hole 42 on the locking member 4. Due to the height of the elastic member 3 between the fan blade 2 and the locking member 4, the end of the motor shaft 11 cannot pass through the locking member 4 and extend out of the through hole 42. It is necessary to press the locking member 4 with an external force to compress the elastic member 3. When the locking member 4 is pressed until the end of the motor shaft 11 stops When the member 111 extends out of the through hole 42, the locking member 4 is rotated to align the stopper 111 with the limiting portion 41; finally, the external force pressing the locking member 4 is removed, and the pre-tightening force generated by the compression of the elastic member 3 drives the locking member 4 to move away from the motor shaft 11, until the stopper 111 contacts and clamps with the limiting portion 41, thereby limiting the locking member 4 from continuing to move outward, achieving a locking connection between the locking member 4 and the end of the motor shaft 11, and then achieving a fixed connection between the fan blade 2 and the motor shaft 11, preventing the fan blade 2 from moving out of the end of the motor shaft 11 when rotating. When disassembly is required, the locking member 4 is pressed to disengage the stopper 111 from the limiting portion 41, and then the locking member 4 is rotated to disalign the stopper 111 with the limiting portion 41, so that the locking member 4 can be moved outward to achieve unlocking and removal of the fan blade 2. Different from the prior art method of fixing fan blades with screws, the fan blade structure of this embodiment is reasonably designed, and the assembly and disassembly are simple and convenient, so it is easy to take out the fan blades for cleaning; and the threaded structure is removed from the fan blade structure to reduce dirt and grime, facilitate direct rinsing, and reduce the cleaning burden.

[0029] In one embodiment, see Figure 2 The motor shaft 11 is provided with a flat portion 112 connected to the fan blade 2, and the fan blade 2 is provided with a flat connection hole 21 matched with the flat portion 112, and the flat portion 112 is fixedly connected with the flat connection hole 21.

[0030] As an example, parallel flat portions are provided on opposite sides of the motor shaft 11, and the fan blade 2 is provided with a flat connection hole 21 having the same cross-sectional shape as the flat portion 112. The flat connection hole 21 is engaged with the flat portion 112 in cooperation with each other to achieve the fastening of the fan blade 2 and the motor shaft 11 and limit the relative rotation between the two. When the motor 1 is running, the motor shaft 11 drives the fan blade 2 to rotate.

[0031] In one embodiment, see Figure 4 The cross-section of the stopper 111 is the same as that of the flattened portion 112, and an annular groove 113 is provided between the stopper 111 and the flattened portion 112; when the locking member 4 moves toward the direction close to the motor shaft 11 until the limiting portion 41 is aligned with the annular groove 113, the stopper 111 is brought into contact with the limiting portion 41 by rotating the locking member 4 to limit the locking member 4 from being away from the motor shaft 11.

[0032] As an example, the cross section of the stopper 111 is the same as that of the flattened portion 112; the locking member 4 is provided with a circular through hole 42 for mounting on the motor shaft 11, and a limiting portion 41 is provided at the top of the locking member 4 at the opening of the through hole 42. The setting of the limiting portion 41 makes the opening shape of the through hole 42 at the top of the locking member 4 the same as that of the stopper 111, and when the stopper 111 is placed at the opening of the through hole 42, the rotation of the locking member 4 is limited. By applying an external force, the locking member 4 is driven to move in the direction close to the motor shaft 11 until the limiting portion 41 is aligned with the annular groove 113, at which time the stopper 111 extends out of the through hole 42 of the locking member 4, and the locking member 4 can rotate relative to the motor shaft 11; and then by rotating the locking member 4, the stopper 111 is aligned with the limiting portion 41, and they are in contact and mutually clamped under the preload force of the elastic member 3, thereby limiting the locking member 4 from continuing to move in the direction away from the motor shaft 11. In addition, the limiting portion 41 is also provided with a limiting groove 411, and the stop member 111 is clamped in the limiting groove 411 to limit the rotation of the locking member 4 relative to the stop member 111, to prevent the stop member 111 from aligning with the through hole 42 and causing the locking member 4 to automatically fall out, thereby ensuring the connection stability between the locking member 4 and the motor shaft 11.

[0033] In one embodiment, see Figure 5 , the elastic member 3 is a wave spring.

[0034] As an example, the elastic member 3 is a wave spring formed by stacking a plurality of wavy spring pieces. Compared with an ordinary helical compression spring, the elastic coefficient of the wave spring is higher, and more precise elastic adjustment can be achieved.

[0035] In one embodiment, see Figure 5 , the elastic member 3 is made of metal.

[0036] As an example, there is metal friction between the elastic member 3, the locking member 4 and the fan blade 2, which can greatly improve the durability of the product.

[0037] Regarding the embodiments of the present utility model, it should also be noted that, in the absence of conflict, the embodiments of the present utility model and the features therein can be combined with each other to obtain new embodiments.

[0038] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. The protection scope of the utility model shall be based on the protection scope of the claims. Although the utility model has been disclosed as a preferred embodiment, it is not used to limit the utility model. Any technician familiar with this profession can make some changes or modify the technical content disclosed above to an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the technical solution of the utility model.

Claims

1. An easily detachable fan blade structure, comprising a motor (1) and a fan blade (2), wherein a motor shaft (11) of the motor (1) is connected to the fan blade (2) to drive the fan blade (2) to rotate; characterized in that: The fan blade structure also includes an elastic member (3) and a locking member (4); the end of the motor shaft (11) extends out of the fan blade (2) and is used to be connected to the locking member (4); the elastic member (3) is arranged between the fan blade (2) and the locking member (4); a stop member (111) is arranged at the end of the motor shaft (11); a limiting portion (41) is arranged on the locking member (4); the pre-tightening force of the elastic member (3) drives the stop member (111) to contact the limiting portion (41) to limit the locking member (4) from moving in a direction away from the motor shaft (11).

2. The easily detachable fan blade structure according to claim 1, characterized in that: The motor shaft (11) is provided with a flat portion (112) connected to the fan blade (2); the fan blade (2) is provided with a flat connection hole (21) matched with the flat portion (112); the flat portion (112) is fixedly engaged with the flat connection hole (21).

3. The easily detachable fan blade structure according to claim 2, characterized in that: The cross section of the stopper (111) is the same as the cross section of the flattened portion (112), and an annular groove (13) is provided between the stopper (111) and the flattened portion (112); when the locking member (4) moves toward the direction approaching the motor shaft (11) until the limiting portion (41) is aligned with the annular groove (13), the stopper (111) is brought into contact with the limiting portion (41) by rotating the locking member (4), so as to limit the locking member (4) from being away from the motor shaft (11).

4. The easily detachable fan blade structure according to claim 1, characterized in that: The elastic member (3) is a wave spring, and the pre-tightening force of the elastic member (3) drives the locking member (4) to move in a direction away from the motor shaft (11).

5. The easily detachable fan blade structure according to claim 4, characterized in that: The elastic member (3) is made of metal.

Images