Dustproof fan blade and ceiling fan thereof

Abstract

The invention relates to the field of fans, in particular to a dustproof fan blade and a ceiling fan thereof, the dustproof fan blade comprises a blade, a protective film group is arranged on the outer surface of the blade, the protective film group is composed of a plurality of protective films which are connected with one another and can be torn off layer by layer from the outer layer to the inner layer, the protective film connected with the blade is the inner layer, and the protective film located on the outermost side is the outer layer; each protective film is provided with a tearing part used for separating the protective film from the adjacent protective film, adhesion layers are arranged between the contact surfaces of the two adjacent protective films and between the protective film on the inner layer and the blade in a covering mode, and the adhesion stress of the adhesion layers is different. The problems that stains of fan blades are not thoroughly cleaned, and operation is inconvenient are solved, meanwhile, energy consumption caused by load increasing of the fan is reduced, and therefore the service life of the fan is prolonged.

Description

[Technical field]

[0001] The invention relates to the field of fans, and in particular to a dustproof fan blade and a ceiling fan thereof. [Background technology]

[0002] When the electric fan is working, the blades rotate at high speed and rub against the air, which causes static electricity on the blades, and then absorbs dust or other stains in the air onto the blades, which makes it inconvenient to clean the blades.

[0003] Chinese utility model patent CN202914409U discloses a fan blade dust cover including a cloth cover formed by a left cloth cover and a right cloth cover movably connected, the cloth cover is connected to a cloth cover in the shape of a fan blade, the cloth cover has a double-layer structure and is provided with an inner cover, and the left cloth cover and the right cloth cover are connected by a zipper.

[0004] The above technical solution prevents the fan blades from being stained with dust by adding a cloth cover that fits the shape of the fan blades. Although it can isolate part of the dust in the air, the cloth cover and the zipper are combined and set on the fan blades, and there is a gap between the fan blades and the fan blades, so the dustproof effect is not good, and the fan blades will still be stained with dust and stains. In addition, since the dust cover is detachable and washable, it is complicated and inconvenient to replace the dust cover during cleaning or to put the dust cover on the fan blades after cleaning. Furthermore, since the dust cover is made of cloth, it will increase the load bearing capacity of the fan, causing the fan blades to easily increase the energy consumption of the drive motor during use, thereby reducing the service life of the fan.

[0005] In view of the above technical problems, the present invention is proposed after research. [Summary of the invention]

[0006] The technical problem to be solved by the present invention is to provide a dustproof fan blade, including a blade, wherein the outer surface of the blade is provided with a protective film group, wherein the protective film group is composed of a plurality of protective films that are interconnected and can be torn off layer by layer from the outer layer to the inner layer, wherein the protective film connected to the blade is the inner layer, and the protective film located on the outermost side is the outer layer, and each of the protective films has a tearing portion for separating it from the adjacent protective film. The present application covers the surface of the blade with a plurality of protective films, which are in contact with the blade without a gap, thereby isolating it from the external environment to prevent the blade from being stained with dust or stains, and then the outer protective film can be easily torn off through the tearing portion, which is convenient to operate; at the same time, the protective film is thin and light without weight pressure, which solves the problem of incomplete cleaning of stains on the fan blades and inconvenient operation, and at the same time helps to reduce the energy consumption of the fan due to the increased weight, thereby extending the service life of the fan.

[0007] In order to solve the above technical problems, the dust-proof fan blade proposed in the present invention includes a blade, the outer surface of the blade is provided with a protective film group, the protective film group is composed of a plurality of protective films which are interconnected and can be torn off layer by layer from the outer layer to the inner layer, the protective film connected to the blade is the inner layer, the protective film located on the outermost layer is the outer layer, each of the protective films has a tearing portion for separating it from the adjacent protective film, an adhesive layer is covered between the contact surfaces of the adjacent protective films and between the protective film of the inner layer and the blade, the adhesive stress of each of the adhesive layers is different, and the adhesive stress of the adhesive layer covered between the protective film of the inner layer and the blade is greater than the adhesive stress of each adhesive layer in the protective film group, the adhesive stress of the adhesive layers of the plurality of protective films in the protective film group gradually increases from the outer layer to the inner layer, one side of the protective film is a protective surface, and the other side is an adhesive surface, the protective surface or the blade of the protective film can be torn off from the corresponding adhesive layer, and the adhesive surface of the protective film is tightly bonded to the corresponding adhesive layer so that the adhesive layer and the corresponding torn protective film can be torn off at the same time.

[0008] As in the above-mentioned dustproof fan blade, the tearing portions of two adjacent protective films are staggered with each other.

[0009] As in the above-mentioned dustproof fan blade, a locking portion is provided on the blade for fixing the tearing portion relatively to the blade.

[0010] As in the above-mentioned dustproof fan blade, the protective film also includes a perforation line for tearing to destroy the protective film, and the perforation line extends from an end close to the tearing portion toward the end of the blade.

[0011] As in the above-mentioned dustproof fan blade, the locking part includes a limiting column arranged on the blade, and each tearing part on the protective film is sleeved on the limiting column layer by layer. The locking part also includes a locking piece that cooperates with the limiting column to limit the movement of the tearing part.

[0012] As in the above-mentioned dustproof fan blade, the protective film includes two perforated lines arranged on both sides of the tearing portion, and the ends of the perforated lines are connected to the protective film.

[0013] As in the above-mentioned dustproof fan blade, the perforated line is arranged on the side of the leeward side of the blade.

[0014] As in the above-mentioned dustproof fan blade, the main component of the protective film is polypropylene material.

[0015] As in the above-mentioned dustproof fan blade, the protective film is a matte film.

[0016] The present application also provides a ceiling fan, comprising the above-mentioned dust-proof fan blades.

[0017] Compared with the prior art, the dust-proof fan blade of the present invention has the following advantages:

[0018] 1. In the present application, a plurality of protective films are covered on the surface of the blades, which are in contact with the blades without gaps, thereby isolating the blades from the external environment to prevent dust or stains from being contaminated on the blades; the outer protective film can be easily torn off through the tearing part, and the operation is convenient; at the same time, the protective film is thin and has no weight pressure, which solves the problem of incomplete cleaning of stains on the fan blades and inconvenient operation, and at the same time helps to reduce the energy consumption of the fan due to the increased weight, thereby extending the service life of the fan.

[0019] 2. The protective film of the protective film group in the present application has multiple layers, and two adjacent protective films are connected by an adhesive layer. When cleaning the dust on the blades multiple times, it is only necessary to use the tearing part on each protective film to tear off the protective film layer by layer from the outer layer to the inner layer in turn. The operation is simple and the cleaning is convenient.

[0020] 3. In the present application, the adhesive layer of the outer protective film is self-adhesive, and the protective film and its corresponding adhesive layer can be completely torn off from the surface of the sub-outer protective film, so that after tearing off the outer layer of the protective film, no self-adhesive will remain on the sub-outer protective film, which has the beneficial effect of tearing off the self-adhesive without residue.

[0021] 4. The protective film in this application is a matte film, which can reduce the reflection of light on the fan surface during the rotation of the fan.

[0022] 5. In this application, the blades are covered with a protective film group, which can not only prevent stains or scratches caused by abrasions during transportation, installation, and use, but also protect the blades from oxidation and chemical resistance.

Brief Description of the Drawings

[0023] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0024] Figure 1 It is a schematic diagram of the structure of the dustproof fan blade in the present invention;

[0025] Figure 2 Schematic diagram of embodiment 1 of the dustproof fan blade of the present invention;

[0026] Figure 3 The present invention Figure 1 A partial enlarged schematic diagram;

[0027] Figure 4 The dustproof fan blade of the present invention Figure 2 A partial enlarged schematic diagram;

[0028] Figure 5 is a schematic diagram of a dustproof fan blade embodiment 2 of the present invention;

[0029] Figure 6 is a schematic diagram of a dustproof fan blade embodiment 3 of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the protective film in the present invention.

[0031] In the figure:

[0032] 1. Blades; 2. Protective film group; 201. Outer layer; 202. Inner layer; 22. Protective film; 221. Film body; 222. Adhesion layer; 23. Perforation line; 24. Avoidance hole; 31. Tearing part; 32. Locking part; 321. Limiting column; 322. Locking piece. [Specific implementation method]

[0033] The following is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings. Figure 1-7 As shown, the present invention includes a dustproof fan blade, including a blade 1, the outer surface of the blade 1 is provided with a protective film group 2, the protective film group 2 is composed of a plurality of protective films 22 that are connected to each other and can be torn off layer by layer from an outer layer 201 to an inner layer 202, the protective film 22 connected to the blade 1 is the inner layer 202, the protective film 22 located on the outermost side is the outer layer 201, each of the protective films 22 has a tearing portion 31 for separating it from an adjacent protective film 22, and an adhesive layer 222 is covered between the contact surfaces of the adjacent protective films 22 and between the protective film 22 of the inner layer 202 and the blade 1, and each of the adhesive layers 222 has a tearing portion 31 for separating it from an adjacent protective film 22. The bonding stresses are different, and the bonding stress of the adhesive layer 222 covered between the protective film 22 of the inner layer 202 and the blade 1 is greater than the bonding stress of each adhesive layer 222 in the protective film group 2. The bonding stress of the adhesive layer 222 of several protective films 22 in the protective film group 2 gradually increases from the outer layer 201 to the inner layer 202. One side of the protective film 22 is a protective surface, and the other side is an adhesive surface. The protective surface of the protective film 22 or the blade 1 can be torn off from the corresponding adhesive layer 222, and the adhesive surface of the protective film 22 is tightly bonded to the corresponding adhesive layer 222 so that the adhesive layer 222 and the corresponding torn protective film 22 can be torn off at the same time.

[0034] The protective film 22 of the protective film group 2 has multiple layers, and two adjacent protective films 22 are connected by an adhesive layer 222. When cleaning the dust on the blade 1 multiple times, it is only necessary to use the tearing portion 31 on each protective film 22 to tear off the protective film 22 of the outer layer 201 to the inner layer of the protective film 22 layer by layer, which is simple to operate and convenient to clean. Compared with the prior art that uses a double-layer structure of a cloth cover to wrap the blade 1 to separate it from the external dust, in this application, a plurality of protective films 22 are covered on the surface of the blade 1, which are in contact with the blade 1 without gaps, thereby isolating it from the external environment to prevent the blade 1 from being stained with dust or stains, and then the protective film 22 of the outer layer 201 is easily torn off by the tearing portion 31, which is convenient to operate; at the same time, the protective film 22 is thin and has no weight pressure, which solves the problem of incomplete cleaning of the fan blade 1 and inconvenient operation, and at the same time helps to reduce the energy consumption of the fan due to the increase in the weight, thereby extending the service life of the fan.

[0035] For example Figure 7 In the figure, the protective film group 2 is covered with three layers of protective films 22 (equivalent to the film body 221 in the figure), and an adhesion layer 222 corresponding to each protective film 22 (the different densities of the same filling pattern of the adhesion layer 222 in the figure only indicate the difference in bonding stress). The lower surface of each protective film 22 facing the blade 1 is regarded as a bonding surface, and the upper surface of the protective film 22 relative to the lower surface of the blade 1 is regarded as a protective surface. The friction coefficient of the protective surface is smaller than the friction coefficient of the bonding surface, so that the bonding stress between the adhesion layer 222 and the corresponding protective film 22 is greater than the bonding stress between the adhesion layer 222 and the adjacent protective film 22. Furthermore, the adhesive layer 222 is specifically a self-adhesive adhesive, which is not easy to solidify and has elasticity, so that it is not easy to leave adhesive when the protective film group 2 is torn apart from each other, and when the protective film 22 is torn away from the adjacent protective film 22, the corresponding self-adhesive adhesive is also torn off together with it, so that no self-adhesive adhesive remains on the surface of the protective film 22 of the sub-outer layer (to indicate the positional relationship between the protective film 22 of the outer layer 201 and the adjacent protective film 22 in the direction of the inner layer 202). In the present application, the adhesive layer 222 of the protective film 22 of the outer layer 201 is a self-adhesive adhesive, which can completely tear off the protective film 22 and its corresponding adhesive layer 222 from the surface of the sub-outer layer of the protective film 22, so that after tearing off the outer layer 201 of the protective film 22, no self-adhesive adhesive will remain on the sub-outer layer of the protective film 22, which has the beneficial effect of tearing off the self-adhesive adhesive without residue.

[0036] When cleaning the dust or stains attached to the blade 1, one hand is fixed on the blade 1, and the other hand holds the tearing portion 31 of the protective film 22 of the outer layer 201, and tears it hard to destroy the bonding stress between the protective film 22 of the outer layer 201 and the protective film 22 of the sub-outer layer, so that the protective film 22 placed on the outer layer 201 and the protective film 22 of the sub-outer layer are peeled off. At this time, when the protective film 22 is torn off from the adjacent protective film 22, the corresponding adhesion layer 222 is also torn off together with it, and then the protective film 22 of the sub-outer layer is exposed at the position of the outer layer 201 of the protective film group 2, so as to complete the cleaning process of the surface of the blade 1 once.

[0037] like Figure 1 , Figure 3 , Figure 7 As shown, as a further embodiment of the present application, the tearing portions 31 of two adjacent protective films 22 are staggered with each other, so that when tearing the protective film 22 of the outer layer 201, pulling and driving the secondary outer layer protective film 22 can be avoided, and the damage to the bonding stress between the adhesion layer 222 of the secondary outer layer protective film 22 and the adjacent protective film 22 can be prevented, so that the protective film 22 of the outer layer 201 can be better torn off, and the operation is simple.

[0038] The tearing portions 31 of two adjacent protective films 22 do not overlap, and during the tearing process, the tearing portion 31 on each protective film 22 can be separated from the adjacent protective film 22 individually. The protective films 22 from the outer layer 201 to the inner layer 202 in the protective film group 2 are adhered layer by layer by coating the self-adhesive, and the adhesion stress of the adhesion layer 222 of each protective film 22 can be different by controlling the amount of the self-adhesive or using the self-adhesive with different composition ratios, so that when the protective film 22 of the outer layer 201 is torn off, the adhesion stress of the adhesion layer 222 of the protective film 22 other than the outer layer 201 can be avoided from being damaged.

[0039] In addition, if Figure 1 , Figure 3 , Figure 5 As shown, the tearing portion 31 can be integrally provided with the protective film 22. Figure 2 , Figure 4 As shown, the tear-off portion 31 and the protective film 22 may be made separately and then bonded together. At the same time, the tear-off portion 31 itself may be coated with an adhesive layer 222 and connected to the blade 1 or the protective film 22 without a gap, and have the same adhesive stress as the protective film 22 on the same layer. Since one end of the tear-off portion 31 occupies a smaller area relative to the blade 1, the tear-off portion 31 may also be without an adhesive layer 222, so that no noise is generated during the rotation of the fan. Figure 1-6 As shown, further, several protective films 22 in the protective film group 2 are also provided with avoidance holes 24 for fasteners used to fix the avoidance blades and the leaf clips.

[0040] As a further embodiment of the present application, the main component of the protective film 22 is polypropylene material, which has the characteristics of chemical resistance, fatigue resistance, electrical insulation, etc., so that the protective film 22 is durable and not easy to absorb dust or stains. The protective film 22 can also be made of thermoplastic polyurethane elastomer, polyethylene, polyvinyl chloride and other main materials.

[0041] The technical solution of the present application covers the blade 1 with a protective film group 2, which can not only prevent stains or scratches caused by abrasions during transportation, installation, and use, but also provide protection for the blade 1 against oxidation and chemical resistance.

[0042] As a further embodiment of the present application, the protective film 22 is preferably a matte film. Since the matte film can absorb more light, it can prevent the reflection of light on the fan surface during the rotation of the fan.

[0043] like Figure 7 As shown, the present application also proposes a self-adhesive film for dustproof fan blades, including a film body 221, the lower surface of the film body 221 is relatively fixed at a desired position by an adhesive, and the adhesive includes pulp, polyester resin, monomer, stabilizer and additives.

[0044] The present application also discloses a ceiling fan, including the above-mentioned dustproof fan blades, and providing a protective film group 2 on each blade 1 of the ceiling fan blade to play a protective role.

[0045] In addition, the laminating process can cover the protective film group 2 on the blade 1 by blistering, and can also be applied to some irregularly shaped blades 1. Furthermore, for the protective film group 2 whose main component is thermoplastic sheet film plastic, the protective film group 2 can also be covered on the outer surface of the blade 1 by stamping. In addition, the protective film 22 can also be wrapped around the outer surface of the blade 1 to form the protective film group 2. The laminating process of the above technical solution is a conventional practice of those skilled in the art and belongs to the prior art.

[0046] Based on the different implementations of the tearing portion 31 mentioned above, specific embodiments are listed below for further explanation.

[0047] Example 1

[0048] like Figure 2 , Figure 4As shown, different from the technical solution of the present application, the protective film 22 of the dustproof fan blade 1 in Example 1 also includes a perforation line 23 for tearing to destroy the protective film 22, and the perforation line 23 extends from one end close to the tearing portion 31 toward the end of the blade 1. In this embodiment 1, the protective film group 2 of the blade 1 covers multiple surfaces. In order to more conveniently tear off the protective film 22, by adding perforation lines 23 on the protective film 22, when tearing off the protective film 22 contaminated with dust, the tearing portion 31 of the protective film 22 is held and applied with force, and the tearing portion 31 pulls the perforation line 23 and destroys the perforation line 23, which helps to destroy the protective film 22 faster, tear off the layer of protective film 22, and thus expose the second outer layer of protective film 22 at the position of the outer layer 201 of the blade 1. The above-mentioned tearing portion 31 is made separately and adheres to the protective film 22 through processing. In addition, when the fan is operating at a high speed for a long time, in order to prevent the perforation line 23 from being weathered and cracked, which causes the perforation line 23 to be damaged, the perforation line 23 is preferably arranged on the leeward side of the blade 1, thereby improving the aesthetics of the fan.

[0049] Example 2

[0050] like Figure 5 As shown, each protective film group 2 of the blade 1 covers multiple surfaces. What is different from Example 1 is that in this embodiment, the tearing portion 31 is integrally arranged between the protective film 22, and the protective film 22 includes two perforated lines 23 arranged on both sides of the tearing portion 31. The ends of the perforated lines 23 are connected to the protective film 22. The structure is simple and can avoid the generation of unnecessary debris and garbage.

[0051] Example 3

[0052] like Figure 6 As shown, the difference from Example 1 is that the blade 1 has a locking portion 32 for fixing the tearing portion 31 relatively to the blade 1. The locking portion 32 includes a limiting column 321 provided on the blade 1, and each tearing portion 31 on the protective film 22 is sleeved on the limiting column 321 layer by layer, and the locking portion 32 also includes a locking member 322 that cooperates with the limiting column 321 to limit the movement of the tearing portion 31. The same as Example 2 is that the protective film group 2 of the blade 1 covers multiple surfaces, and the tearing portion 31 is integrally arranged with the protective film 22. Each tearing portion 31 in the protective film group 2 is provided with a hole that cooperates with the limiting column 321, and a through hole is provided on the blade 1 for the limiting column 321 to pass through. The limiting column 321 passes through the blade 1 through the through hole, and the tearing portions 31 from the inner layer to the outer layer 201 of the protective film group 2 are sleeved on the limiting column 321 layer by layer on the surface of the blade 1. Finally, the locking piece 322 is sleeved on the limiting column 321 and locked to prevent the tearing portion 31 from detaching from the limiting column 321.

[0053] At this time, the position of each tearing portion 31 of the protective film group 2 overlaps. When the protective film 22 of the outer layer 201 needs to be torn off, the locking member 322 needs to be released, and then the tearing portion 31 on the protective film 22 of the outer layer 201 is separated from the limiting column, and the connection between the tearing portion 31 and the locking member 32 is released, and then the protective film 22 to be torn off is torn off according to the above-mentioned tearing method, and the locking member 322 sets and locks the remaining protective films 22 on the limiting column 321. The protective films 22 in the protective film group 2 are separated from the tearing portions 31 by this operation process. It should be noted that since the protective film group 2 is light and thin, applying an external force to the tearing portion 31 can directly destroy the tearing portion 31 from the locking portion 32, thereby releasing the connection between the tearing portion 31 and the locking portion 32. Specifically, in the locking portion 32 of this embodiment 3, the movement of the tearing portion 31 can be limited by the screw and the nut threaded cooperation.

Claims

1. Dust-proof fan blades, characterized by The invention comprises a blade (1), wherein the outer surface of the blade (1) is provided with a protective film group (2), wherein the protective film group (2) is composed of a plurality of protective films (22) which are connected to each other and can be torn off layer by layer from an outer layer (201) to an inner layer (202), wherein the protective film (22) connected to the blade (1) is the inner layer (202), and the protective film (22) located on the outermost side is the outer layer (201), and each of the protective films (22) has a tearing portion (31) for separating it from an adjacent protective film (22), and an adhesive layer (222) is provided between the contact surfaces of adjacent protective films (22) and between the protective film (22) of the inner layer (202) and the blade (1), and the adhesive stress of each of the adhesive layers (222) is not less than 1. The protective film (22) of the inner layer (202) and the blade (1) are covered with an adhesive layer (222) whose bonding stress is greater than the bonding stress of each adhesive layer (222) in the protective film group (2); the bonding stress of the adhesive layer (222) of several protective films (22) in the protective film group (2) gradually increases from the outer layer (201) to the inner layer (202); one side of the protective film (22) is a protective surface and the other side is an adhesive surface; the protective surface of the protective film (22) or the blade (1) can be torn off from the corresponding adhesive layer (222); the adhesive surface of the protective film (22) is tightly bonded to the corresponding adhesive layer (222) so that the adhesive layer (222) and the corresponding torn protective film (22) can be torn off at the same time.

2. The dustproof fan blade according to claim 1, characterized in that The tearing portions (31) of two adjacent protective films (22) are arranged staggered with each other.

3. The dustproof fan blade according to claim 1 or 2, characterized in that The blade (1) is provided with a locking portion (32) for fixing the tearing portion (31) relatively to the blade (1).

4. The dustproof fan blade according to claim 1 or 2, characterized in that The protective film (22) further comprises a perforation line (23) for tearing to destroy the protective film (22), wherein the perforation line (23) extends from an end close to the tearing portion (31) towards the end of the blade (1).

5. The dust-proof fan blade according to claim 3, characterized in that The locking portion (32) comprises a limiting column (321) arranged on the blade (1), and each tearing portion (31) on the protective film (22) is sleeved on the limiting column (321) layer by layer. The locking portion (32) also comprises a locking piece (322) that cooperates with the limiting column (321) to limit the movement of the tearing portion (31).

6. The dust-proof fan blade according to claim 4, characterized in that The protective film (22) comprises two perforated lines (23) arranged on both sides of the tearing portion (31), and the ends of the perforated lines (23) are connected to the protective film (22).

7. The dust-proof fan blade according to claim 4, characterized in that The perforated line (23) is arranged on the side of the leeward surface of the blade (1).

8. The dust-proof fan blade according to claim 1, characterized in that The main component of the protective film (22) is polypropylene material.

9. The dust-proof fan blade according to claim 1, characterized in that The protective film (22) is a matte film.

10. A ceiling fan, characterized in that It comprises the dustproof fan blade described in any one of claims 1 to 9.

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