TWI848749B - Ceiling fan - Google Patents

Abstract

A ceiling fan includes a base, a rotary holder, a blade bracket, and a fan blade. The rotary holder is pivotally connected to the base and rotates relative to the base. The blade bracket protrudes from the rotary holder and has two guiding surfaces located on opposite sides of the blade bracket. The fan blade is combined with the rotary holder by the blade bracket. The fan blade has an opening on an end close to the blade bracket. The fan blade further includes a housing, one or more supporting ribs, and two guiding limiting parts. The housing includes a bottom plate and a top plate and has an accommodating space inside. The one or more supporting ribs protrude upward from the bottom plate of the housing in the accommodating space. The two guiding limiting parts are connected between the bottom plate and the top plate of the housing and disposed corresponded to the two guiding surfaces. The two guiding surfaces of the blade bracket are limited by the two guiding limiting parts, and the blade bracket is accommodated in the accommodating space and located between a top surface of the one or more supporting ribs and the top plate of the housing.

Description

ceiling fan

The present disclosure relates to a ceiling fan.

In the conventional ceiling fan, during the assembly process, the operator usually needs to hold the fan blade with one hand and tighten the screw with the other hand. However, in the current practice, since the screw must be aligned with the hole, the operator tightens the screw from bottom to top to complete the assembly of the fan blade. This causes the screw to often fall to the ground during the assembly process, which is extremely inconvenient for the assembly process.

Therefore, how to come up with a ceiling fan that can simplify assembly difficulty and shorten assembly time is one of the problems that the industry is eager to invest research and development resources to solve.

In view of this, one purpose of the present disclosure is to provide a ceiling fan that can solve the above-mentioned problems.

In order to achieve the above-mentioned purpose, according to one embodiment of the present disclosure, a ceiling fan includes an outer cover, a middle ring, a blade frame and a fan blade. The middle ring is pivotally connected to the outer cover and rotates relative to the outer cover. The blade frame extends radially from the middle ring and has two guide surfaces located on both sides of the blade frame. The fan blade is connected to the middle ring through the blade frame. The fan blade has an opening at one end close to the blade frame. The fan blade further includes a shell, one or more supporting ribs and two guide limiters. The shell includes a bottom plate and a top plate and has a containing space in the shell. The supporting rib protrudes upward from the bottom plate of the shell in the containing space. The two guide limiters are connected between the bottom plate and the top plate of the shell and are arranged corresponding to the two guide surfaces. The two guide surfaces of the blade frame are limited by two guide limiters, and the blade frame is accommodated in the accommodation space and is located between the top surface of the supporting rib and the top plate of the shell.

In the embodiment of the present disclosure, the supporting ribs extend along a radial direction parallel to the fan blades.

In an embodiment of the present disclosure, at least one of the one or more supporting ribs is connected to the top plate of the housing at an end away from the center ring.

In the embodiment of the present disclosure, the supporting rib is located between the two guide limiters.

In the embodiment of the present disclosure, there is a distance between the two guide surfaces, and the distance gradually shortens in the direction approaching the fan blade.

In the embodiment of the present disclosure, the fan blade further comprises a shielding plate. The shielding plate is located at one end of the fan blade close to the middle circle.

In the embodiment of the present disclosure, the ceiling fan includes a plurality of fan blades, and a plurality of shielding plates of the plurality of fan blades are spliced around the circumference of the middle circle.

In the embodiment of the present disclosure, the blade frame has a locking hole, and the fan blade has a guide hole arranged corresponding to the locking hole.

In the embodiment of the present disclosure, the fan blade further includes an annular convex wall protruding outward from the outer surface of the top plate of the shell, and the guide hole is located within the range of the inner edge of the annular convex wall.

In the embodiment of the present disclosure, the blade frame further includes an elastic sheet, and the fan blade has a positioning groove that engages with the elastic sheet.

In the embodiment of the present disclosure, the blade frame has a positioning protrusion, and the fan blade has a notch that engages with the positioning protrusion.

In summary, in the ceiling fan disclosed herein, since the blade rack has a guide surface and the fan blade includes a guide limiter, when installing the fan blade, the operator only needs to insert the locking piece into the guide hole from top to bottom along the inner edge of the annular convex wall to accurately align the fan blade, thereby achieving quick installation. In the ceiling fan disclosed herein, since the fan blade includes one or more supporting ribs, the supporting ribs and the top plate of the casing can clamp the blade rack when the blade rack is accommodated in the accommodating space of the fan blade. Therefore, the operator does not need to hold the fan blade by hand when installing the fan blade, thereby achieving the effect of saving effort and time. In the ceiling fan disclosed herein, since the elastic sheet of the blade rack is matched with the positioning groove of the fan blade, even if the screw is loose or loose, the fan blade will not slip off and cause damage to people or objects, thereby further improving safety. In the ceiling fan disclosed in the present invention, since the fan blade has a guide hole and an annular convex wall, even if the installation environment makes it impossible for the operator to align the hole position with the human eye, blind locking by touch can be achieved.

The above description is only used to explain the problem to be solved by the present disclosure, the technical means for solving the problem, and the effects produced, etc. The specific details of the present disclosure will be introduced in detail in the following implementation modes and related drawings.

The following will disclose multiple embodiments of the present disclosure with drawings. For the purpose of clarity, many practical details will be described together in the following description. However, it should be understood that these practical details should not be used to limit the present disclosure. In other words, in some embodiments of the present disclosure, these practical details are not necessary. In addition, in order to simplify the drawings, some commonly used structures and components will be depicted in the drawings in a simple schematic manner. The same reference numerals will be used to represent the same or similar components in all drawings.

The ceiling fan 100 according to an embodiment of the present disclosure will be described in detail below.

Please refer to FIG. 1. FIG. 1 is a perspective view of a ceiling fan 100 according to one embodiment of the present disclosure. The ceiling fan 100 includes an outer cover 110, a center ring 120, and a fan blade 130. The center ring 120 is pivotally connected to the outer cover 110, and the center ring 120 is configured to rotate relative to the outer cover 110. The fan blade 130 is combined with the center ring 120 and is configured to rotate relative to the outer cover 110 along with the center ring 120. The fan blade 130 includes a shielding plate SP. The shielding plate SP is located at one end of the fan blade 130 close to the center ring 120.

In this embodiment, the ceiling fan 100 includes a plurality of blades 130. As shown in FIG. 1 , the number of blades 130 is three. However, the present disclosure is not intended to limit the number of blades 130. As shown in FIG. 1 , a plurality of shielding plates SP of the blades 130 are spliced around the periphery of the middle circle 120. The shielding plates SP can protect the components located in the middle circle 120 (e.g., the motor driving the middle circle 120) from damage that may be caused by exposure.

Please refer to FIG. 2, which is a top view of the ceiling fan 100 shown in FIG. 1. In this figure, a plurality of blades 130 are configured to rotate relative to the outer cover 110 along a rotation axis parallel to the direction Z. As shown in the figure, each blade 130 has a guide hole GH and a positioning slot PT. The guide hole GH is configured for the alignment of a locking member (e.g., a locking screw) to facilitate the operator to install the blade 130. The positioning slot PT is configured for another protrusion to be combined therewith to facilitate the fixing between the blade 130 and the center ring 120.

As shown in FIG. 2 , the number of the guide holes GH may be two. However, the number of the guide holes GH is not limited thereto.

Please refer to FIG. 3, which is an exploded view of the ceiling fan 100 shown in FIG. 1. In this figure, the ceiling fan 100 further includes a blade rack 140. The blade rack 140 extends radially from the center ring 120 (direction X). The blade rack 140 has a locking hole FH and includes an elastic sheet ET. The guide hole GH of the fan blade 130 is provided corresponding to the locking hole FH of the blade rack 140, and the positioning groove PT of the fan blade 130 is provided corresponding to the elastic sheet ET of the blade rack 140. As shown in FIG. 3, the fan blade 130 has an accommodating space AS. The fan blade 130 has an accommodating space AS, which is configured to accommodate the blade rack 140. In this figure, one of the blades 130 of the ceiling fan 100 extends along the radial direction ED ₁₃₀ . When the blade rack 140 is accommodated in the accommodation space AS of the blade 130 , the blade 130 can be combined with the center ring 120 along the radial direction _ED130 of the blade 130 through the blade rack 140 .

Please refer to FIG. 4, which is a three-dimensional view of the fan blade 130 and the blade frame 140 shown in FIG. 3, further illustrating the detailed structure of the fan blade 130 and the blade frame 140. In this figure, the fan blade 130 further includes a housing 131, a blade body 135 and a support plate 136. The accommodating space AS is located in the housing 131. In other words, the accommodating space AS is defined by the housing 131. The blade body 135 extends from the housing 131 in a direction away from the center circle 120. The support plate 136 is located on both sides of the blade body 135 and connects the blade body 135 and the housing 131. Since the connection between the housing 131 and the blade 135 has a step difference, the support plate 136 can eliminate the step difference and provide support for the blade 135 at the connection with the housing 131. The fan blade 130 further has a notch R. In this figure, the blade frame 140 further includes a positioning bump GB. The notch R of the fan blade 130 is set corresponding to the positioning bump GB of the blade frame 140. The blade frame 140 can also be set with a notch R corresponding to the positioning bump GB of the fan blade 130. The replacement of these components is a change that can be understood by the user.

Please refer to Figure 5, which is a top view of the blade rack 140 shown in Figure 4. The blade rack 140 includes a first tongue portion 142 and a second tongue portion 144. The first tongue portion 142 is located on a side of the blade rack 140 away from the fan blade 130, and the second tongue portion 144 extends from the first tongue portion 142 and is located on a side close to the fan blade 130. The locking hole FH is located on the top surface 142t of the first tongue portion 142 and penetrates the first tongue portion 142. The elastic sheet ET is located on the top surface 144t of the second tongue portion 144. As shown in the figure, the first tongue portion 142 has a first guide surface 142s1 and a second guide surface 142s2 extending generally in the direction of the radial direction ED ₁₃₀ of the fan blade 130 (direction X). There is a distance D ₁₄₂ between the first guide surface 142s1 and the second guide surface 142s2. The distance D ₁₄₂ gradually shortens in the direction close to the fan blade 130, that is, the second tongue portion 144 has a first guide surface 144s1 and a second guide surface 144s2 extending in the radial direction ED ₁₃₀ (direction X) of the fan blade 130. There is a distance D ₁₄₄ between the first guide surface 144s1 and the second guide surface 144s2. The distance D ₁₄₄ is maintained constant along the radial direction ED ₁₃₀ of the fan blade 130.

In this embodiment, the distance D ₁₄₂ is greater than or equal to the distance D ₁₄₄ . The distance D ₁₄₂ is equal to the distance D ₁₄₄ at the junction of the first tongue portion 142 and the second tongue portion 144 .

Please refer to Figure 6, which is a three-dimensional diagram of the fan blade 130 of the present disclosure, illustrating a more detailed structure of the fan blade 130. As shown in the figure, the shell 131 further includes a bottom plate 132, a top plate 133 and a side plate 134. The bottom plate 132, the top plate 133 and the side plate 134 are spliced together to form the shell 131 and together define a accommodating space AS. The bottom plate 132 and the side plate 134 are connected to the shield plate SP. The fan blade 130 has an opening OP at one end close to the blade frame 140. Specifically, the bottom plate 132, the top plate 133 and the side plate 134 that are spliced together form an opening OP at one end away from the blade body 135. The top plate 133 of the housing 131 has an outer surface 133so, and the annular convex wall CW protrudes outward from the outer surface 133so of the top plate 133. In some embodiments, the guide hole GH is located in the inner edge of the annular convex wall CW. The fan blade 130 further includes a fin 134A protruding outward from the outer surface 133so of the top plate 133. In this figure, the fin 134A can also be seen as extending from the side plate 134. The notch R is located on the top plate 133, and is located on the opening OP of the fan blade 130 and is recessed toward the blade body 135.

Please continue to refer to Figure 6. The fan blade 130 further includes one or more supporting ribs 137 and a guide stopper 138. The guide stopper 138 includes a first guide stopper 1381 and a second guide stopper 1382. The supporting ribs 137 are configured to provide support for the fan blade 130 and the blade frame 140 when the blade frame 140 is accommodated in the accommodating space AS of the fan blade 130. The supporting ribs 137 protrude upward from the bottom plate 132 of the shell 131 in the accommodating space AS. The first guide stopper 1381 and the second guide stopper 1382 are connected between the bottom plate 132 and the top plate 133 of the housing ₁₃₁ and are arranged corresponding to the first guide surface 142s1 and the second guide surface 142s2 of the blade frame 140, so that the support rib 137 is located between the first guide stopper 1381 and the second guide stopper 1382. The support rib 137 generally extends in the radial direction ED130 of the blade 130. The first guide stopper 1381 and the second guide stopper 1382 also generally extend in the radial direction ED130 of the blade _130. At least one support rib 137 is connected to the bottom plate 132 of the housing 131 at one end away from the center circle 120. Specifically, at least one supporting rib 137 includes a connecting portion 137A at an end away from the center ring 120. Furthermore, at least one supporting rib 137 is connected to the bottom plate 132 and the top plate 133 via the connecting portion 137A.

Please refer to Figure 7. Figure 7 is a cross-sectional view of the fan blade 130 along the section line A-A’ of Figure 2 of the present disclosure. The section line A-A’ shown in Figure 2 is perpendicular to the radial direction and the section passes through the guide hole GH. As shown in Figure 7, the first guide limiter 1381 and the second guide limiter 1382 are located between the two side panels 134, and the supporting rib 137 is located between the first guide limiter 1381 and the second guide limiter 1382. The supporting rib 137 protrudes from the bottom plate 132 of the shell 131 without being connected to the top plate 133. In some embodiments, each supporting rib 137 is within the accommodating space AS and protrudes from the inner surface 132si of the bottom plate 132 toward the inner surface 133si of the top plate 133. Each supporting rib 137 has a top surface 137t, and each top surface 137t is separated from the inner surface 133si of the top plate 133, that is, the top surface 137t of the supporting rib 137 is not connected to the inner surface 133si of the top plate 133.

In this embodiment, the two supporting ribs 137 closest to the first guide stopper 1381 and the second guide stopper 1382 include a connecting portion 137A, but the present invention is not limited thereto.

In this embodiment, the fan blade 130 includes five supporting ribs 137, as shown in FIG7. However, the number of the supporting ribs 137 is not limited thereto.

As shown in FIG. 7 , the guide hole GH passes through the top plate 133 of the housing 131. The space enclosed by the annular convex wall CW is connected to the guide hole GH.

Please refer to FIG. 8, which is a cross-sectional view of the blade holder 140 and the fan blade 130 along the section line A-A' in FIG. 2 of the present disclosure. The blade holder 140 shown in FIG. 8 is combined with the fan blade 130, that is, the blade holder 140 is accommodated in the accommodation space AS of the fan blade 130. In detail, in the cross section along the section line A-A', the first tongue 142 of the blade holder 140 is located in the accommodation space AS. When the blade rack 140 is accommodated in the accommodation space AS, the first tongue portion 142 contacts the inner surface 133si of the top plate 133 and the top surface 137t of the supporting rib 137 at the same time, and the locking hole FH penetrating the first tongue portion 142 is aligned with the guide hole GH penetrating the top plate 133 in the direction (direction Z) from the bottom plate 132 to the top plate 133. The locking hole FH can be, for example, a screw hole, which is configured to be screwed with a locking member (for example, a locking screw) so that the locking member passes through the guide hole GH and is locked into the locking hole FH, thereby achieving the purpose of combining the fan blade 130 with the blade rack 140.

Please continue to refer to Figure 8. When the blade rack 140 is accommodated in the accommodating space AS, the first guide surface 142s1 and the second guide surface 142s2 of the first tongue 142 are respectively limited by the first guide limiter 1381 and the second guide limiter 1382, so that the blade rack 140 is accommodated in the accommodating space AS and is located between the top surface 137t of the supporting rib 137 and the top plate 133 of the shell 131, and the blade rack 140 moves within the range between the first guide limiter 1381 and the second guide limiter 1382.

As shown in FIG. 8 , a distance D ₁₃₈ is provided between the first guide stopper 1381 and the second guide stopper 1382 in a direction perpendicular to the radial direction ED ₁₃₀ of the blade 130. The distance D ₁₃₈ between the first guide stopper 1381 and the second guide stopper 1382 is greater than or equal to the distance D ₁₄₂ between the first guide surface 142s1 and the second guide surface 142s2.

Please refer to Figure 9, which is a cross-sectional view of the fan blade 130 along the section line BB' of Figure 2 of the present disclosure. The section line BB' of Figure 2 extends along the radial direction ED ₁₃₀ , and the section line BB' passes through the positioning groove PT but not through the guide hole GH. As shown in Figure 9, the notch R is located at the end of the top plate 133 away from the blade body 135. The positioning groove PT is located at the end of the top plate 133 close to the blade body 135. The annular protruding wall CW is disposed on the top plate 133 and is located between the notch R and the positioning groove PT. As shown in Figure 9, in some embodiments, the inner surface 132si of the bottom plate 132 is substantially a slope. Specifically, the inner surface 132si of the bottom plate 132 gradually approaches the inner surface 133si of the top plate 133 in the direction toward the blade 135. In other words, the height of the supporting rib 137 protruding from the inner surface 132si of the bottom plate 132 toward the inner surface 133si of the top plate 133 gradually decreases in the direction toward the blade 135. As shown in FIG. 9 , the blade 135 is elongated and extended along the radial direction _ED130 . Alternatively, the blade 135 can be roughly regarded as an extension of the bottom plate 132.

Please refer to FIG. 10, which is a cross-sectional view of the blade rack 140 and the fan blade 130 combined according to the section line BB' of FIG. 2 of the present disclosure. As shown in FIG. 10, in the present embodiment, the blade rack 140 and the fan blade 130 are combined with each other along the radial direction _ED130 . When the blade rack 140 and the fan blade 130 are combined, the notch R of the fan blade 130 and the positioning protrusion GB of the blade rack 140 are engaged with each other, and the positioning groove PT of the fan blade 130 and the elastic sheet ET of the blade rack 140 are engaged with each other. In some embodiments, the elastic sheet ET is substantially bent, so that a bulge is formed at the bending part of the elastic sheet ET, and then the bending part of the elastic sheet ET is engaged with the positioning groove PT. At the same time, the first tongue portion 142 of the blade rack 140 is limited by the first guide stopper 1381 and the second guide stopper 1382, and the second tongue portion 144 of the blade rack 140 is limited by the connecting portion 137A, as shown in FIGS. 9 and 10 .

Please refer to Figure 11, which is a cross-sectional view of the fan blade 130 along the section line C-C' in Figure 2 of the present disclosure. The section line C-C' in Figure 2 extends along the radial direction (direction X), and the section line C-C' passes through the guide hole GH but not through the positioning groove PT. As shown in Figure 11, the inner diameter of the annular convex wall CW is greater than or equal to the hole diameter of the guide hole GH so as to be compatible with the head shape of the locking member (such as a locking screw). In some embodiments, the combination of the annular convex wall CW and the guide hole GH can be, for example, a countersunk hole. Since the structural configuration of Figure 11 is roughly similar to the structural configuration of Figure 9, the repeated elements will not be repeated.

Please refer to FIG. 12, which is a cross-sectional view of the blade rack 140 and the fan blade 130 along the section line C-C' of FIG. 2 of the present disclosure. When the blade rack 140 and the fan blade 130 are combined, in addition to the mutual combination between the notch R and the positioning protrusion GB and the positioning groove PT and the elastic sheet ET, the guide hole GH of the fan blade 130 and the locking hole FH of the blade rack 140 are aligned with each other and connected to each other, so that an additional locking member (for example, a locking screw) can be screwed with the locking hole FH, so that the fan blade 130 and the blade rack 140 are fastened to each other. Since the structural configuration of FIG. 12 is roughly similar to the structural configuration of FIG. 10, the repeated components are not repeated.

With the above-mentioned structural configuration, in a use scenario, when a worker on the ground wants to install the fan blade 130 on, for example, the middle ring 120 fixed to the ceiling, the worker holds the fan blade 130 and faces one end of the opening OP of the fan blade 130 toward the blade holder 140. Then, the worker holds the fan blade 130 and leans against the middle ring 120 along the radial direction _ED130 . Then, the blade holder 140 is accommodated in the accommodation space AS located in the housing 131 of the fan blade 130, so that the notch R is engaged with the positioning protrusion GB and the positioning groove PT is engaged with the elastic sheet ET, so as to achieve the preliminary positioning and limiting effect between the blade holder 140 and the fan blade 130. Since the operator is located below the ceiling fan 100, the operator cannot see the outer surface 133so of the top plate 133 of the fan blade 130. Therefore, the operator touches the outer surface 133so of the top plate 133 with tactile feedback to determine the location of the annular convex wall CW. Then, the operator installs the locking piece (such as a locking screw) from the annular convex wall CW into the guide hole GH without being able to see the annular convex wall CW. Finally, the operator uses an additional tool to lock the above-mentioned locking piece into the guide hole GH and the locking hole FH connected to the guide hole GH, and completes the installation operation of the fan blade 130 by means of blind locking by touch.

In one use scenario, when a worker on the ground wants to unload the fan blade 130 from the middle ring 120 fixed to the ceiling, the worker touches the outer surface 133so of the top plate 133 by hand to determine the location of the annular convex wall CW through tactile feedback. Then, the worker uses an additional tool to loosen the above-mentioned locking piece from the guide hole GH and the locking hole FH. Then, the worker holds the fan blade 130 and applies force along the radial direction ED ₁₃₀ away from the middle ring 120. At this time, since the positioning groove PT and the elastic sheet ET are engaged to provide positioning and limiting functions, the fan blade 130 will not fall to the ground because the above-mentioned locking piece has been loosened. Then, the operator continues to apply force to the fan blade 130 so that the positioning groove PT and the elastic sheet ET are separated from each other. Finally, the operator holds the fan blade 130 and moves it away from the center circle 120 so that the blade frame 140 is separated from the accommodating space AS of the fan blade 130, thereby completing the unloading operation of the fan blade 130.

From the above detailed description of the specific implementation of the present disclosure, it can be clearly seen that in the ceiling fan of the present disclosure, since the blade frame has a guide surface and the fan blade includes a guide stopper, when installing the fan blade, the operator only needs to insert the locking piece from top to bottom along the inner edge of the annular convex wall into the guide hole to accurately align the fan blade, so as to achieve rapid installation. In the ceiling fan of the present disclosure, since the fan blade includes one or more supporting ribs, when the blade frame is accommodated in the accommodating space of the fan blade, the supporting ribs and the top plate of the housing can clamp the blade frame. Therefore, when installing the fan blade, the operator does not need to hold it by hand, and can achieve the effect of saving effort and time. In the ceiling fan disclosed in the present invention, since the elastic sheet of the blade frame is matched with the positioning groove of the fan blade, even if the screw is loose or loose, the fan blade will not slip off and cause damage to people or objects, thereby further improving safety. In the ceiling fan disclosed in the present invention, since the fan blade has a guide hole and an annular convex wall, even if the installation environment makes it impossible for the operator to align the hole position with the human eye, a blind lock by touch can be achieved.

The above content summarizes the features of several implementation methods so that those familiar with this technology can better understand the state of this case. Those familiar with this technology should understand that without departing from the spirit and scope of this case, the above content can be easily used as a basis for designing or modifying other changes to implement the same purpose and/or achieve the same advantages of the implementation methods introduced in this article. The above content should be understood as an example of this disclosure, and its protection scope should be based on the scope of the patent application.

100: ceiling fan 110: outer cover 120: middle circle 130: fan blade 131: shell 132: bottom plate 132si, 133si: inner surface 133: top plate 133so: outer surface 134: side plate 134A: fin 135: blade body 136: support plate 137: support rib 137A: joint 137t: top surface 138: guide limiter 1 381: first guide stopper 1382: second guide stopper 140: blade rack 142: first tongue 142s1, 144s1: first guide surface 142s2, 144s2: second guide surface 142t, 144t: top surface 144: second tongue A-A', B-B', C-C': section line AS: accommodation space CW: annular convex wall D ₁₃₈ , D ₁₄₂ , D ₁₄₄ : distance ED ₁₃₀ : radial direction ET: elastic sheet FH: locking hole GB: positioning protrusion GH: guide hole OP: opening PT: positioning groove R: notch SP: shield plate X, Z: direction

In order to make the above and other purposes, features, advantages and embodiments of the present disclosure more clearly understandable, the attached drawings are described as follows: Figure 1 is a three-dimensional diagram of a ceiling fan according to one embodiment of the present disclosure. Figure 2 is a top view of a ceiling fan according to an embodiment of the present disclosure. Figure 3 is an exploded view of a ceiling fan according to an embodiment of the present disclosure. Figure 4 is a three-dimensional diagram of a fan blade and a blade rack according to an embodiment of the present disclosure. Figure 5 is a top view of a blade rack according to an embodiment of the present disclosure. Figure 6 is a three-dimensional diagram of a fan blade according to an embodiment of the present disclosure. Figure 7 is a cross-sectional view of a fan blade along the section line A-A’ of Figure 2 according to an embodiment of the present disclosure. FIG. 8 is a cross-sectional view showing the combination of the blade holder and the fan blade along the section line A-A’ of FIG. 2 according to the embodiment of the present disclosure. FIG. 9 is a cross-sectional view showing the fan blade along the section line B-B’ of FIG. 2 according to the embodiment of the present disclosure. FIG. 10 is a cross-sectional view showing the combination of the blade holder and the fan blade along the section line B-B’ of FIG. 2 according to the embodiment of the present disclosure. FIG. 11 is a cross-sectional view showing the combination of the blade holder and the fan blade along the section line C-C’ of FIG. 2 according to the embodiment of the present disclosure. FIG. 12 is a cross-sectional view showing the combination of the blade holder and the fan blade along the section line C-C’ of FIG. 2 according to the embodiment of the present disclosure.

Domestic storage information (please note in the order of storage institution, date, and number) None Foreign storage information (please note in the order of storage country, institution, date, and number) None

130: Fan blades

131: Shell

132: Base plate

133: Top plate

133so: outer surface

134: Side panels

134A: Fins

135: Leaf body

137: Supporting ribs

137A: Joint

138: Guide limiter

1381: First guide limiter

1382: Second guide limiter

AS: Accommodation space

CW: Circular convex wall

ED ₁₃₀ : Radial direction

GH:Guide hole

OP: Open your mouth

R: Gap

SP: Shield

X, Z: direction

Claims (11)

A ceiling fan comprises: an outer cover; a center ring pivotally connected to the outer cover and rotating relative to the outer cover; a blade frame radially extending from the center ring and having two guide surfaces located on both sides of the blade frame; and a fan blade, which is connected to the center ring by the blade frame, and the fan blade has an opening at one end close to the blade frame, wherein the fan blade further comprises: a housing, comprising a bottom plate and a top plate and having a receiving space in the housing; one or more supporting ribs protruding upward from the bottom plate of the housing in the receiving space; and two guide limiters connected between the bottom plate and the top plate of the housing and arranged corresponding to the two guide surfaces, The two guide surfaces of the blade rack are limited by the two guide limiters, and the blade rack is accommodated in the accommodation space and located between a top surface of the one or more supporting ribs and the top plate of the shell. A ceiling fan as described in claim 1, wherein the one or more supporting ribs are elongated and extend along a radial direction parallel to the fan blade. A ceiling fan as described in claim 1, wherein at least one of the one or more supporting ribs is connected to the top plate of the shell at an end away from the center ring. A ceiling fan as described in claim 1, wherein the one or more supporting ribs are located between the two guide limit members. A ceiling fan as described in claim 1, wherein there is a distance between the two guide surfaces, and the distance gradually shortens in a direction approaching the fan blade. A ceiling fan as described in claim 1, wherein the fan blade further includes a shield, and the shield is located at one end of the fan blade near the center circle. A ceiling fan as described in claim 6, wherein the ceiling fan comprises a plurality of fan blades, and a plurality of shielding plates of the fan blades are spliced around the periphery of the middle circle. A ceiling fan as described in claim 1, wherein the blade frame has a locking hole, and the fan blade has a guide hole arranged corresponding to the locking hole. A ceiling fan as described in claim 8, wherein the fan blade further includes an annular protrusion protruding outward from an outer surface of the top plate of the shell, and the guide hole is located within the inner edge of the annular protrusion. A ceiling fan as described in claim 1, wherein the blade frame further includes an elastic sheet, and the fan blade has a positioning groove that engages with the elastic sheet. A ceiling fan as described in claim 1, wherein the blade frame has a positioning protrusion, and the fan blade has a notch that engages with the positioning protrusion.

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