Ceiling fan

Abstract

A ceiling fan comprises an outer cover, a middle ring, a blade frame and fan blades. The middle ring is pivoted with the outer cover and rotates relative to the outer cover. The blade frame radially extends from the middle ring and is provided with two guide surfaces positioned on two sides of the blade frame; the fan blades are combined with the middle ring through blade frames. One end of the fan blade close to the blade frame is provided with an opening; the fan blade further comprises a shell, one or more supporting ribs and two guide limiting pieces. The shell comprises a bottom plate and a top plate and is provided with a containing space in the shell. The supporting rib protrudes upwards from the bottom plate of the shell in the containing space. The two guide limiting pieces 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 faces of the blade frame are limited by the two guide limiting pieces, and the blade frame is contained in the containing space and located between the top face of the supporting rib and the top plate of the shell.

Description

Technical Field

[0001] The present disclosure relates to a ceiling fan. Background Art

[0002] In conventional ceiling fans, during the assembly process, the operator usually needs to hold the fan blade with one hand and tighten the screws with the other hand. However, in the current practice, since the screws must be aligned with the holes, the operator tightens the screws from bottom to top to complete the assembly of the fan blades. This often causes the screws to fall to the ground during the assembly process, which is extremely inconvenient for the assembly process.

[0003] Therefore, how to come up with a ceiling fan that can simplify the assembly difficulty and shorten the assembly time is one of the problems that the industry is eager to invest research and development resources to solve. Summary of the invention

[0004] In view of this, an object of the present disclosure is to provide a ceiling fan that can solve the above problems.

[0005] 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 support ribs and two guide limiters. The shell includes a bottom plate and a top plate and has a accommodating space in the shell. The support rib protrudes upward from the bottom plate of the shell in the accommodating 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 the two guide limiters, and the blade frame is accommodated in the accommodating space and is located between the top surface of the support rib and the top plate of the shell.

[0006] In the embodiment of the present disclosure, the support ribs extend along a radial direction parallel to the fan blades.

[0007] 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 middle ring.

[0008] In the embodiment of the present disclosure, the supporting rib is located between the two guide limiters.

[0009] In the embodiment disclosed herein, there is a distance between the two guide surfaces, and the distance gradually shortens along the direction approaching the fan blade.

[0010] In the embodiment disclosed herein, 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.

[0011] 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 periphery of the middle circle.

[0012] 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.

[0013] 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.

[0014] In an embodiment of the present disclosure, the blade frame further includes an elastic sheet, and the fan blade has a positioning groove engaged with the elastic sheet.

[0015] In the embodiment of the present disclosure, the blade frame has a positioning protrusion, and the fan blade has a notch engaged with the positioning protrusion.

[0016] In summary, in the ceiling fan disclosed in the present invention, 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 position, so as to achieve quick installation. In the ceiling fan disclosed in the present invention, since the fan blade includes one or more support ribs, the support ribs and the top plate of the shell 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, 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 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, and further improve safety. In the ceiling fan disclosed in the present invention, since the fan blade has a guide hole and 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.

[0017] The above description is only used to illustrate the problems to be solved by the present disclosure, the technical means to solve the problems, and the effects produced, etc. The specific details of the present disclosure will be described in detail in the following implementation forms and related drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the above and other objects, features, advantages and embodiments of the present disclosure more clearly understood, the accompanying drawings are described as follows:

[0019] Figure 1 A three-dimensional diagram illustrating a ceiling fan according to an embodiment of the present disclosure;

[0020] Figure 2 A top view of a ceiling fan according to an embodiment of the present disclosure is shown;

[0021] Figure 3 An exploded view of a ceiling fan according to an embodiment of the present disclosure is shown;

[0022] Figure 4 A three-dimensional diagram showing a fan blade and a blade frame according to an embodiment of the present disclosure;

[0023] Figure 5 A top view of a blade rack according to an embodiment of the present disclosure is shown;

[0024] Figure 6 A three-dimensional diagram showing a fan blade according to an embodiment of the present disclosure;

[0025] Figure 7 To illustrate the implementation of the present disclosure, Figure 2 A cross-sectional view of the fan blade along the section line A-A';

[0026] Figure 8 To illustrate the implementation of the present disclosure, Figure 2 A cross-sectional view of the combination of the blade frame and the fan blade along the section line A-A';

[0027] Fig. 9 To illustrate the implementation of the present disclosure, Figure 2 A cross-sectional view of the fan blade along the section line BB';

[0028] Fig.10 To illustrate the implementation of the present disclosure, Figure 2 A cross-sectional view of the combination of the blade frame and the fan blade along the section line BB';

[0029] Fig.11 To illustrate the implementation of the present disclosure, Figure 2 A cross-sectional view of the fan blade along the section line C-C';

[0030] Fig.12 To illustrate the implementation of the present disclosure, Figure 2 A cross-sectional view of the combination of the blade frame and the fan blade along the section line C-C'.

[0031]

Explanation of symbols

[0032] 100: Ceiling fan

[0033] 110: Outer cover

[0034] 120: Middle Circle

[0035] 130: Fan blade

[0036] 131: Shell

[0037] 132: Bottom plate

[0038] 132si, 133si: inner surface

[0039] 133: Top plate

[0040] 133so: outer surface

[0041] 134: Side panel

[0042] 134A: Fin

[0043] 135: Leaf

[0044] 136: Support plate

[0045] 137: Support rib

[0046] 137A:Connection

[0047] 137t: Top

[0048] 138: Guide limiter

[0049] 1381: first guide limiter

[0050] 1382: Second guide limiter

[0051] 140: Leaf rack

[0052] 142: First tongue

[0053] 142s1, 144s1: first guide surface

[0054] 142s2, 144s2: second guide surface

[0055] 142t, 144t: Top surface

[0056] 144: Second tongue

[0057] A-A', B-B', C-C': hatching line

[0058] AS: Accommodation space

[0059] CW: Circular Convex Wall

[0060] D 138 , D 142 , D 144 :distance

[0061] ED 130 : Radial direction

[0062] ET: Elastic sheet

[0063] FH: Locking hole

[0064] GB: Positioning bump

[0065] GH:Guide hole

[0066] OP: Opening

[0067] PT: Positioning slot

[0068] R: Gap

[0069] SP: Shield

[0070] X, Z: direction DETAILED DESCRIPTION

[0071] The following will disclose multiple embodiments of the present disclosure with the accompanying drawings. For the purpose of clear description, 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 conventional structures and elements will be depicted in a simple schematic manner in the drawings. The same reference numerals will be used to represent the same or similar elements in all drawings.

[0072] The ceiling fan 100 according to an embodiment of the present disclosure will be described in detail below.

[0073] Please refer to Figure 1 . Figure 1 1 is a perspective view of a ceiling fan 100 according to an 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.

[0074] In this embodiment, the ceiling fan 100 includes a plurality of fan blades 130. Figure 1 As shown, the number of the blades 130 is three. However, the present disclosure is not intended to limit the number of the blades 130. Figure 1 As shown, a plurality of shielding plates SP of the fan blade 130 are spliced ​​around the periphery of the middle ring 120. The shielding plates SP can protect the components located in the middle ring 120 (such as a motor driving the middle ring 120) from being damaged due to exposure.

[0075] Please refer to Figure 2 ,for Figure 1 A top view of the ceiling fan 100 is shown. In this figure, a plurality of blades 130 are configured to rotate relative to the housing 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 a locking member (e.g., a locking screw) to align, so that the operator can install the blade 130. The positioning slot PT is configured for another protrusion to be combined with, so as to assist in the fixation between the blade 130 and the center ring 120.

[0076] like Figure 2 As shown, the number of the guide holes GH may be two. However, the number of the guide holes GH is not limited thereto.

[0077] Please refer to Figure 3 ,for Figure 1 FIG. 1 is an exploded view of the ceiling fan 100. 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 blade 130 is set corresponding to the locking hole FH of the blade rack 140, and the positioning groove PT of the blade 130 is set corresponding to the elastic sheet ET of the blade rack 140. Figure 3 As shown, the fan blade 130 has an accommodation space AS. The fan blade 130 has an accommodation space AS configured to accommodate the blade frame 140. In this figure, one of the fan blades 130 of the ceiling fan 100 is arranged along the radial direction ED 130 When the blade rack 140 is accommodated in the accommodating space AS of the blade 130, the blade 130 can extend along the radial direction ED of the blade 130 through the blade rack 140. 130 Combined with the middle circle 120.

[0078] Please refer to Figure 4 ,for Figure 3 The three-dimensional diagram of the fan blade 130 and the blade rack 140 shown further illustrates the detailed structure of the fan blade 130 and the blade rack 140. In this figure, the fan blade 130 further includes a shell 131, a blade body 135 and a support plate 136. The accommodating space AS is located in the shell 131. In other words, the accommodating space AS is defined by the shell 131. The blade body 135 extends from the shell 131 in a direction away from the middle circle 120. The support plate 136 is located on both sides of the blade body 135 and connects the blade body 135 and the shell 131. Since there is a step difference at the connection between the shell 131 and the blade body 135, the support plate 136 can eliminate the step difference and provide support for the blade body 135 at the connection with the shell 131. The fan blade 130 further has a notch R. In this figure, the blade rack 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 rack 140. The blade rack 140 may also be provided with a notch R corresponding to the positioning protrusion GB of the blade 130. The replacement of these components is a change that can be understood by the user.

[0079] Please refer to Figure 5 ,for Figure 4FIG. 1 is a top view of the blade rack 140. 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 blade 130, and the second tongue portion 144 extends from the first tongue portion 142 and is located on a side close to the blade 130. The locking hole FH is located on the top surface 142t of the first tongue portion 142 and passes through 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 radial direction ED generally toward the blade 130. 130 The first guide surface 142s1 and the second guide surface 142s2 extend in the direction (direction X). There is a distance D between the first guide surface 142s1 and the second guide surface 142s2. 142 . Distance D 142 The second tongue portion 144 gradually shortens in the direction close to the blade 130 , that is, the second tongue portion 144 has a radial direction ED toward the blade 130 . 130 The first guide surface 144s1 and the second guide surface 144s2 extend in the direction (direction X). There is a distance D between the first guide surface 144s1 and the second guide surface 144s2. 144 . Distance D 144 is the radial direction ED along the direction of the fan blade 130 130 Maintain constant.

[0080] In this embodiment, the distance D 142 Greater than or equal to distance D 144 . Distance D 142 The distance D is equal to the junction between the first tongue portion 142 and the second tongue portion 144. 144 .

[0081] Please refer to Figure 6 , is a three-dimensional diagram of the fan blade 130 disclosed in the present invention, depicting 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 an 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 shell 131 has an outer surface 133so, and an 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 considered to extend 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.

[0082] Please continue to refer to Figure 6 . The fan blade 130 further includes one or more support ribs 137 and a guide limiter 138. The guide limiter 138 includes a first guide limiter 1381 and a second guide limiter 1382. The support rib 137 is configured to provide support for the fan blade 130 and the blade rack 140 when the blade rack 140 is accommodated in the accommodating space AS of the fan blade 130. The support rib 137 protrudes upward from the bottom plate 132 of the shell 131 in the accommodating space AS. The first guide limiter 1381 and the second guide limiter 1382 are connected between the bottom plate 132 and the top plate 133 of the shell 131 and are arranged corresponding to the first guide surface 142s1 and the second guide surface 142s2 of the blade rack 140, so that the support rib 137 is located between the first guide limiter 1381 and the second guide limiter 1382. The support ribs 137 are generally oriented in the radial direction ED of the fan blade 130. 130 The first guide stopper 1381 and the second guide stopper 1382 are also generally in the radial direction ED of the fan blade 130 130 The at least one supporting rib 137 is connected to the bottom plate 132 of the housing 131 at one end away from the middle ring 120. Specifically, the at least one supporting rib 137 includes a connecting portion 137A at one end away from the middle ring 120. Furthermore, the at least one supporting rib 137 is connected to the bottom plate 132 and the top plate 133 through the connecting portion 137A.

[0083] Please refer to Figure 7 . Figure 7 For the purpose of disclosure Figure 2 A cross-sectional view of the fan blade 130 along the section line AA′. Figure 2 The section line AA' shown is perpendicular to the radial direction and the section passes through the guide hole GH. Figure 7 As shown, the first guide stopper 1381 and the second guide stopper 1382 are located between the two side plates 134, and the support rib 137 is located between the first guide stopper 1381 and the second guide stopper 1382. The support rib 137 protrudes from the bottom plate 132 of the housing 131 without being connected to the top plate 133. In some embodiments, each support rib 137 is in the accommodation 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 support 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 support rib 137 is not connected to the inner surface 133si of the top plate 133.

[0084] In this embodiment, the two supporting ribs 137 closest to the first guiding and limiting member 1381 and the second guiding and limiting member 1382 include a connecting portion 137A, but the present invention is not limited thereto.

[0085] In this embodiment, the fan blade 130 includes five supporting ribs 137, such as Figure 7 However, the number of the supporting ribs 137 is not limited thereto.

[0086] Continue as Figure 7 As shown, the guide hole GH passes through the top plate 133 of the housing 131. The space surrounded by the annular convex wall CW is connected to the guide hole GH.

[0087] Please refer to Figure 8 , for the purpose of revealing Figure 2 A cross-sectional view of the blade frame 140 and the fan blade 130 along the section line AA′. Figure 8 The blade rack 140 shown is combined with the fan blade 130, that is, the blade rack 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 portion 142 of the blade rack 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 support rib 137 at the same time, and the locking hole FH passing through the first tongue portion 142 and the guide hole GH passing through the top plate 133 are aligned in the direction from the bottom plate 132 to the top plate 133 (direction Z). 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.

[0088] 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 portion 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 support 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.

[0089] Continue as Figure 8 As shown, the first guide stopper 1381 and the second guide stopper 1382 are spaced apart from each other along the radial direction ED perpendicular to the fan blade 130. 130 The distance D in the direction 138 The distance D between the first guide stopper 1381 and the second guide stopper 1382 is 138 Greater than or equal to the distance D between the first guide surface 142s1 and the second guide surface 142s2 142 .

[0090] Please refer to Fig. 9, for the purpose of revealing Figure 2 A cross-sectional view of the fan blade 130 taken along the section line BB′. Figure 2 The section line BB' is along the radial direction ED 130 The section line BB' passes through the positioning groove PT but not the guide hole GH. Fig. 9 As shown, the notch R is located at one end of the top plate 133 away from the blade 135. The positioning groove PT is located at one end of the top plate 133 close to the blade 135. The annular convex wall CW is provided on the top plate 133 and is located between the notch R and the positioning groove PT. Fig. 9 As shown, in some embodiments, the inner surface 132si of the bottom plate 132 is substantially an inclined surface. 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 support 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. Fig. 9 As shown, the blade 135 is along the radial direction ED 130 Alternatively, the blade 135 can be roughly regarded as an extension of the bottom plate 132.

[0091] Please refer to Fig.10 , for the purpose of Figure 2 A cross-sectional view of the blade frame 140 and the fan blade 130 along the section line BB'. Fig.10 As shown, in this embodiment, the blade rack 140 and the blade 130 are arranged along the radial direction ED 130 When the blade rack 140 is combined with the fan blade 130, the notch R of the fan blade 130 is meshed with the positioning protrusion GB of the blade rack 140, and the positioning groove PT of the fan blade 130 is engaged with the elastic piece ET of the blade rack 140. In some embodiments, the elastic piece ET is substantially bent so that a protrusion is formed at the bending part of the elastic piece ET, thereby engaging the bending part of the elastic piece ET 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 limiter 1381 and the second guide limiter 1382, and the second tongue portion 144 of the blade rack 140 is limited by the connecting portion 137A, as shown in FIG. Fig. 9 as well as Fig.10 shown.

[0092] Please refer to Fig.11 , for the purpose of Figure 2 A cross-sectional view of the fan blade 130 along the section line CC'. Figure 2 The section line CC' of the embodiment extends in the radial direction (direction X), and the section line CC' passes through the guide hole GH but not through the positioning groove PT. Fig.11As shown, the inner diameter of the annular convex wall CW is greater than or equal to the aperture of the guide hole GH, so as to match 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. Fig.11 The structural configuration and Fig. 9 The structural configurations are roughly similar, so repeated elements are not repeated.

[0093] Please refer to Fig.12 , for the purpose of revealing Figure 2 A cross-sectional view of the blade rack 140 and the blade 130 along the section line CC'. When the blade rack 140 and the 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 blade 130 and the locking hole FH of the blade rack 140 are aligned with each other and communicate with each other, so that an additional locking member (for example, a locking screw) can be screwed with the locking hole FH, so that the blade 130 and the blade rack 140 are fastened to each other. Fig.12 The structural configuration and Fig.10 The structural configurations are roughly similar, so repeated elements are not repeated.

[0094] 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 to the blade frame 140. Then, the worker holds the fan blade 130 and moves it along the radial direction ED. 130 Abutting against the middle circle 120. Then, the blade rack 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 rack 140 and the fan blade 130. Since the operator is located below the ceiling fan 100, the operator's line of sight cannot observe 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 by hand to determine the location of the annular convex wall CW by tactile feedback. Then, the operator installs the locking piece (such as a locking screw) from the annular convex wall CW into the guide hole GH under the condition that the line of sight cannot reach 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 hand-touch blind locking.

[0095] In one use scenario, when an operator on the ground wants to unload the fan blade 130 from the middle ring 120 fixed to the ceiling, the operator touches the outer surface 133so of the top plate 133 with his hand to determine the location of the annular convex wall CW through tactile feedback. Then, the operator uses an additional tool to loosen the locking piece from the guide hole GH and the locking hole FH. Then, the operator holds the fan blade 130 and moves it along the radial direction ED. 130 And apply force in the direction away from the middle circle 120. At this time, since the positioning groove PT and the elastic piece 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 piece ET are separated from each other. Finally, the operator holds the fan blade 130 and moves it in the direction away from the middle 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.

[0096] From the above detailed description of the specific implementation of the present disclosure, it can be clearly seen that in the ceiling fan disclosed in the present disclosure, 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 from top to bottom along the inner edge of the annular convex wall into the guide hole to accurately align the blade to achieve rapid installation. In the ceiling fan disclosed in the present disclosure, since the fan blade includes one or more support ribs, the support ribs and the top plate of the shell 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 blade by hand when installing the fan blade, and can achieve the effect of saving effort and time. In the ceiling fan disclosed in the present disclosure, 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, and further improve safety. In the ceiling fan disclosed in the present disclosure, since the fan blade has a guide hole and annular convex wall, even if the installation environment makes it impossible for the operator to align the hole position with the human eye, a hand-touch blind lock can be achieved.

[0097] The above content summarizes the features of several embodiments so that those skilled in the art can better understand the aspects of the present invention. Those skilled in the art should understand that the above content can be easily used as a basis for designing or modifying other variations without departing from the spirit and scope of the present invention to implement the same purpose and / or achieve the same advantages of the embodiments described herein. The above content should be understood as an example of the present disclosure, and its protection scope should be based on the claims.

Claims

1. A ceiling fan, characterized in that: Include: an outer cover; A middle ring, pivotally connected to the outer cover and rotating relative to the outer cover; a blade frame extending radially from the center ring and having two guide surfaces located on both sides of the blade frame; and A fan blade is connected to the middle ring through 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 shell, including a bottom plate and a top plate and having an accommodating space in the shell; One or more supporting ribs protruding upward from the bottom plate of the housing in the accommodating space; as well as Two guide limiters are connected between the bottom plate and the top plate of the housing and are 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 support ribs and the top plate of the shell.

2. The ceiling fan according to claim 1, characterized in that The one or more supporting ribs are elongated and extend along a radial direction parallel to the fan blade.

3. The ceiling fan according to claim 1, characterized in that 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 middle ring.

4. The ceiling fan according to claim 1, characterized in that The one or more supporting ribs are located between the two guiding and limiting members.

5. The ceiling fan according to claim 1, characterized in that: There is a distance between the two guiding surfaces, and the distance gradually shortens along a direction approaching the fan blade.

6. The ceiling fan according to claim 1, wherein: The fan blade further includes a shielding plate, and the shielding plate is located at one end of the fan blade close to the middle circle.

7. The ceiling fan according to claim 6, characterized in that The ceiling fan comprises a plurality of fan blades, and a plurality of shielding plates of the fan blades are spliced ​​around a peripheral edge of the middle circle.

8. The ceiling fan according to claim 1, wherein: The blade frame has a locking hole, and the fan blade has a guide hole arranged corresponding to the locking hole.

9. The ceiling fan according to claim 8, characterized in that The fan blade further comprises an annular convex wall protruding outward from an 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.

10. The ceiling fan according to claim 1, wherein: The blade frame further comprises an elastic sheet, and the fan blade has a positioning groove engaged with the elastic sheet.

11. The ceiling fan according to claim 1, wherein: The blade frame has a positioning protrusion, and the fan blade has a notch engaged with the positioning protrusion.

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