Ceiling fan and fan blade mounting structure thereof

Abstract

The utility model discloses a ceiling fan and a fan blade installation structure thereof. The fan blade installation structure comprises a motor shell, fan blades and fasteners. The upper surface of the motor shell comprises a first mounting surface and a second mounting surface which are connected from inside to outside, the first mounting surface is an arc-shaped surface protruding outwards, and the second mounting surface is a plane; the lower surface of the blade root of the fan blade comprises a first binding surface and a second binding surface which are arranged from inside to outside, the first binding surface is attached to the first mounting surface, and the second binding surface is attached to the second mounting surface; and the tail end of the fastener sequentially penetrates through the first mounting hole and the second mounting hole. According to the lever principle, the second installation face tightly attached to the arc-shaped face of the motor shell is designed at the root of the fan blade, force borne by the fan blade can be transmitted and diffused to the motor shell, therefore, stress near the first installation hole of the blade root of the fan blade is relieved, the fan blade is prevented from being broken from the first installation hole of the blade root, and the service life of the fan blade is prolonged. The service life of the fan blades is prolonged, and the risk of safety accidents is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ceiling fans, in particular to a ceiling fan and a fan blade installation structure thereof. Background Art

[0002] A ceiling fan is an electrical appliance that can efficiently convert electrical energy into wind energy, providing users with a comfortable indoor environment. The main components of a ceiling fan include a motor and fan blades, and the motor drives the fan blades to rotate, generating airflow, thereby achieving the effect of cooling and ventilation.

[0003] In traditional ceiling fans, the root of each blade is usually screwed to the motor housing. Due to the structural design of the blade itself, the force area of ​​the blade is mainly concentrated near the installation hole opened at the root of the blade. During long-term use of the ceiling fan, the blade is prone to breakage from the installation hole at the root of the blade, causing safety accidents. Utility Model Content

[0004] The purpose of the utility model is to propose a fan blade mounting structure for a ceiling fan, which is conducive to transmitting and diffusing the force exerted on the fan blade to the motor housing, thereby reducing the force near the mounting hole at the root of the fan blade, thereby extending the service life of the fan blade and effectively reducing the risk of safety accidents.

[0005] Another object of the present invention is to provide a ceiling fan using the above-mentioned fan blade mounting structure, which can effectively improve the safety of the ceiling fan and overcome the shortcomings of the prior art.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A fan blade mounting structure of a ceiling fan comprises a motor housing, a fan blade and a fastener, wherein the fan blade is mounted on the top of the motor housing through the fastener;

[0008] The upper surface of the motor housing includes a first mounting surface and a second mounting surface connected from the inside to the outside, and the first mounting surface is an arc-shaped surface protruding outward, and the second mounting surface is a plane; a second mounting hole for connecting with the fastener is opened on the top of the motor housing, and the second mounting hole is located on the second mounting surface;

[0009] The lower surface of the blade root of the fan blade includes a first fitting surface and a second fitting surface arranged from the inside to the outside, and the first fitting surface is in contact with the first mounting surface, and the second fitting surface is in contact with the second mounting surface; the blade root of the fan blade is provided with a first mounting hole for connecting with the fastener, and the first mounting hole is located on the second fitting surface;

[0010] The end of the fastener passes through the first mounting hole and the second mounting hole in sequence.

[0011] Preferably, the lower surface of the blade root of the fan blade also includes a hollow surface, the first fitting surface, the hollow surface and the second fitting surface are sequentially connected from inside to outside, and a cavity is left between the hollow surface and the upper surface of the motor housing.

[0012] Preferably, a fastening boss is integrally formed at the top of the blade root of the fan blade, and the upper surface of the fastening boss is a plane; the first mounting hole is opened inside the fastening boss.

[0013] Preferably, the thickness of the fastening boss is the maximum thickness of the fan blade.

[0014] Preferably, the fastener comprises a fastening head and a fastening rod, and the fastening head is protrudingly arranged on the top end of the fastening rod;

[0015] The length of the chord corresponding to the arc length of the first mounting surface is greater than the width of the fastening head;

[0016] The width of the second mounting surface is greater than the width of the fastening head.

[0017] Preferably, the length of the chord corresponding to the arc length of the first mounting surface is at least 1.5 times the width of the fastening head;

[0018] The width of the second mounting surface is at least 1.5 times the width of the fastening head.

[0019] Preferably, at least two fasteners are provided, and the fan blades are mounted on the top of the motor housing through the two fasteners.

[0020] Preferably, at least three fan blades are provided, and the three fan blades are circumferentially installed on the top of the motor housing.

[0021] Preferably, an avoidance position is provided at the end of the lower surface of the blade root of the fan blade.

[0022] A ceiling fan uses the blade mounting structure of the ceiling fan.

[0023] The technical solution provided by the embodiment of the utility model may have the following beneficial effects:

[0024] 1. Based on the principle of lever, this scheme designs a second mounting surface at the root of the fan blade that is in close contact with the arc surface of the motor housing (i.e., the first mounting surface), which is beneficial to transmit and diffuse the force exerted on the fan blade to the motor housing, thereby reducing the force near the first mounting hole at the root of the fan blade, preventing the fan blade from breaking at the first mounting hole at the root of the blade, thereby extending the service life of the fan blade and effectively reducing the risk of safety accidents.

[0025] 2. This solution also leaves a cavity at the connection between the motor housing and the fan blades, and the cavity is located between the first fitting surface and the second fitting surface, so as to achieve effective control of the elastic modulus of the fan blades; in addition, the addition of the cavity also increases the rounded corners of the left surface, which is beneficial to the molding of the fan blades on the one hand, and can further extend its service life on the other hand. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The utility model is a structural schematic diagram of a fan blade installation structure of a ceiling fan.

[0027] Figure 2 The utility model is an exploded view of a fan blade installation structure of a ceiling fan.

[0028] Figure 3 The utility model is a structural schematic diagram of a fan blade in a fan blade installation structure of a ceiling fan.

[0029] Figure 4 The utility model is a top view of a fan blade installation structure of a ceiling fan.

[0030] Figure 5 yes Figure 4 Cross-sectional view along the AA direction.

[0031] Figure 6 yes Figure 4 Cross-sectional view along the BB direction.

[0032] Figure 7 yes Figure 5 Enlarged view of point C in the middle.

[0033] Figure 8 yes Figure 6 Enlarged view of point D in the middle.

[0034] Fig. 9 yes Figure 5 Enlarged view of point E in the middle.

[0035] Wherein: motor housing 1, first mounting surface 11, second mounting surface 12, second mounting hole 101;

[0036] The fan blade 2, the first fitting surface 21, the second fitting surface 22, the empty surface 23, the fastening boss 24, the first mounting hole 201, and the avoidance position 202;

[0037] Fastener 3, fastening head 31, fastening rod 32. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] The technical solution provides a fan blade installation structure of a ceiling fan, comprising a motor housing 1, a fan blade 2 and a fastener 3, wherein the fan blade 2 is installed on the top of the motor housing 1 through the fastener 3;

[0040] The upper surface of the motor housing 1 includes a first mounting surface 11 and a second mounting surface 12 connected from the inside to the outside, and the first mounting surface 11 is an arc-shaped surface protruding outward, and the second mounting surface 12 is a plane; a second mounting hole 101 for connecting with the fastener 3 is opened on the top of the motor housing 1, and the second mounting hole 101 is located on the second mounting surface 12;

[0041] The lower surface of the blade root of the fan blade 2 includes a first fitting surface 21 and a second fitting surface 22 arranged from the inside to the outside, and the first fitting surface 21 is in contact with the first mounting surface 11, and the second fitting surface 22 is in contact with the second mounting surface 12; the blade root of the fan blade 2 is provided with a first mounting hole 201 for connecting with the fastener 3, and the first mounting hole 201 is located on the second fitting surface 22;

[0042] The end of the fastener 3 passes through the first mounting hole 201 and the second mounting hole 101 in sequence.

[0043] In traditional ceiling fans, the root of each blade is usually screwed to the motor housing. Due to the structural design of the blade itself, the force area of ​​the blade is mainly concentrated near the installation hole opened at the root of the blade. During long-term use of the ceiling fan, the blade is prone to breakage from the installation hole at the root of the blade, causing safety accidents.

[0044] Therefore, in order to extend the service life of the fan blades and reduce the risk of safety accidents, the present technical solution proposes a fan blade installation structure for a ceiling fan, such as Figure 1-9As shown, it includes a motor housing 1, a fan blade 2 and a fastener 3. In particular, the upper surface of the motor housing 1 of the present solution includes an arc-shaped first mounting surface 11 and a flat second mounting surface 12 connected from the inside to the outside, and the lower surface of the root of the fan blade 2 includes a first fitting surface 21 and a second fitting surface 22 arranged from the inside to the outside, and the first fitting surface 21 is in contact with the first mounting surface 11, and the second fitting surface 22 is in contact with the second mounting surface 12. According to the principle of lever, the present solution designs a second mounting surface 12 at the root of the fan blade 2, which is in close contact with the arc-shaped surface (i.e., the first mounting surface 11) of the motor housing 1, which is conducive to transmitting and diffusing the force received by the fan blade 2 to the motor housing 1, thereby reducing the force near the first mounting hole 201 at the root of the fan blade 2, preventing the fan blade 2 from breaking at the first mounting hole 201 at the root, thereby extending the service life of the fan blade 2 and effectively reducing the risk of safety accidents.

[0045] It should be noted that the fastener 3 of this solution can be a screw, which is not limited here.

[0046] To further explain, the lower surface of the root of the fan blade 2 also includes a hollow surface 23, the first fitting surface 21, the hollow surface 23 and the second fitting surface 22 are sequentially connected from the inside to the outside, and a cavity is left between the hollow surface 23 and the upper surface of the motor housing 1.

[0047] Furthermore, the present solution also leaves a cavity at the connection between the motor housing 1 and the fan blade 2, and the above-mentioned cavity is located between the first fitting surface 21 and the second fitting surface 22, so as to effectively control the elastic modulus of the fan blade 2; in addition, the addition of the cavity also increases the radius of the hollow surface 23, which is beneficial to the molding of the fan blade 2 on the one hand, and can further extend its service life on the other hand.

[0048] To further explain, a fastening boss 24 is integrally formed at the top of the blade root of the fan blade 2, and the upper surface of the fastening boss 24 is a plane; the first mounting hole 201 is opened inside the fastening boss 24.

[0049] In this way, on the one hand, the head of the fastener 3 can be in close contact with the upper surface of the fastening boss 24, so that the fan blade 2 is evenly stressed, and on the other hand, the structural strength of the fan blade 2 can be effectively increased.

[0050] To further explain, the thickness of the fastening boss 24 is the maximum thickness of the fan blade 2 .

[0051] In this way, it is more conducive to preventing the fan blade 2 from breaking at the first mounting hole 201, thereby extending the service life of the fan blade 2 and effectively reducing the risk of safety accidents.

[0052] To further illustrate, the fastener 3 includes a fastening head 31 and a fastening rod 32, wherein the fastening head 31 is protrudingly disposed at the top end of the fastening rod 32;

[0053] The length of the chord corresponding to the arc length of the first mounting surface 11 is greater than the width of the fastening head 31;

[0054] The width of the second mounting surface 12 is greater than the width of the fastening head 31 .

[0055] Furthermore, the present solution also optimizes the length of the chord corresponding to the arc length of the first mounting surface 11 and the width of the second mounting surface 12 to improve the installation stability of the fan blade 2 on the top of the motor housing 1 and facilitate the transmission and diffusion of the force. Figure 8 The middle distance M is shown as the width of the second mounting surface 12; Figure 8 The distance m is the width of the fastening head 31 .

[0056] It is further explained that the length of the chord corresponding to the arc length of the first mounting surface 11 is at least 1.5 times the width of the fastening head 31;

[0057] The width of the second mounting surface 12 is at least 1.5 times the width of the fastening head 31 .

[0058] To further explain, at least two fasteners 3 are provided, and the fan blade 2 is mounted on the top of the motor housing 1 through the two fasteners 3 .

[0059] In a preferred embodiment of the present technical solution, the fan blade 2 is mounted on the top of the motor housing 1 by at least two fasteners 3, which is more conducive to improving the installation stability of the fan blade 2.

[0060] To further explain, there are at least three fan blades 2 , and the three fan blades 2 are circumferentially installed on the top of the motor housing 1 .

[0061] In another preferred embodiment of the present technical solution, at least three fan blades 2 are provided to ensure that they can effectively work on the airflow and meet the user's usage experience.

[0062] To further explain, an avoidance position 202 is provided at the end of the lower surface of the blade root of the fan blade 2 .

[0063] In one embodiment, the motor housing 1 of the present solution includes an upper housing and a lower housing connected to each other, and the upper housing and the lower housing are connected by connecting screws. Therefore, when the head of the screw is located at the top of the motor housing 1, in order to ensure the effective installation of the fan blade 2, the present solution also provides an avoidance position 202 at the end of the lower surface of the blade root of the fan blade 2, and the avoidance position 202 is used to avoid the above-mentioned connecting screws, while taking into account the stability of the installation and the effective diffusion of the force to the motor housing 1.

[0064] A ceiling fan uses the blade mounting structure of the ceiling fan.

[0065] The present solution also proposes a ceiling fan using the above-mentioned fan blade mounting structure, which can effectively improve the safety of the ceiling fan and overcome the shortcomings of the prior art.

[0066] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0067] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0068] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0069] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0070] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0071] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0072] The technical principle of the present invention is described above in combination with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations here, technicians in this field can think of other specific implementation methods of the present invention without creative work, and these methods will fall within the protection scope of the present invention.

Claims

1. A fan blade mounting structure for a ceiling fan, characterized in that: It includes a motor housing, a fan blade and a fastener, wherein the fan blade is mounted on the top of the motor housing through the fastener; The upper surface of the motor housing includes a first mounting surface and a second mounting surface connected from the inside to the outside, and the first mounting surface is an arc-shaped surface protruding outward, and the second mounting surface is a plane; a second mounting hole for connecting with the fastener is opened on the top of the motor housing, and the second mounting hole is located on the second mounting surface; The lower surface of the blade root of the fan blade includes a first fitting surface and a second fitting surface arranged from the inside to the outside, and the first fitting surface is in contact with the first mounting surface, and the second fitting surface is in contact with the second mounting surface; the blade root of the fan blade is provided with a first mounting hole for connecting with the fastener, and the first mounting hole is located on the second fitting surface; The end of the fastener passes through the first mounting hole and the second mounting hole in sequence.

2. The blade mounting structure of a ceiling fan according to claim 1, characterized in that: The lower surface of the blade root of the fan blade also includes a hollow surface, the first fitting surface, the hollow surface and the second fitting surface are sequentially connected from the inside to the outside, and a cavity is left between the hollow surface and the upper surface of the motor housing.

3. The blade mounting structure of a ceiling fan according to claim 1, characterized in that: A fastening boss is integrally formed at the top of the blade root of the fan blade, and the upper surface of the fastening boss is a plane; the first mounting hole is opened inside the fastening boss.

4. The blade mounting structure of a ceiling fan according to claim 3, characterized in that: The thickness of the fastening boss is the maximum thickness of the fan blade.

5. The blade mounting structure of a ceiling fan according to claim 1, characterized in that: The fastener comprises a fastening head and a fastening rod, wherein the fastening head is protrudingly arranged on the top end of the fastening rod; The length of the chord corresponding to the arc length of the first mounting surface is greater than the width of the fastening head; The width of the second mounting surface is greater than the width of the fastening head.

6. The blade mounting structure of a ceiling fan according to claim 5, characterized in that: The length of the chord corresponding to the arc length of the first mounting surface is at least 1.5 times the width of the fastening head; The width of the second mounting surface is at least 1.5 times the width of the fastening head.

7. The blade mounting structure of a ceiling fan according to claim 1, characterized in that: At least two fasteners are provided, and the fan blades are mounted on the top of the motor housing through the two fasteners.

8. The blade mounting structure of a ceiling fan according to claim 1, characterized in that: At least three fan blades are provided, and the three fan blades are circumferentially mounted on the top of the motor housing.

9. The blade mounting structure of a ceiling fan according to claim 1, characterized in that: An escape position is provided at the end of the lower surface of the blade root of the fan blade.

10. A ceiling fan, characterized in that: A blade mounting structure for a ceiling fan using any one of claims 1 to 9.

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