TWI567302B - Fan structure - Google Patents

Description

Fan structure

The present invention relates to a fan structure, and more particularly to a fan structure that prevents an external force from being pressed and causes the fan to fail to operate.

At present, notebook computers or tablet computers are increasingly thinner, and all of the above electronic products need to be equipped with fans to assist in heat dissipation to avoid damage caused by high temperature of electronic products. In addition, improper external force forces the keyboard or housing of the electronic product to cause a keyboard. When the housing axially presses the bearing or the fan wheel of the fan, the fan will not operate normally and dissipate heat.

The main object of the present invention is to provide a fan structure, in which a rotating disk that is movably disposed between a cover body and a fixed seat can prevent the fan wheel combined with the rotating disk from being pressed by an external force, and can be thinned. The thickness of the fan structure.

A fan structure of the present invention comprises a central shaft, a cover, a fixed seat, a rotating disk, a plurality of balls and a wheel, the central shaft having an upper end, a lower end and an outer ring wall, the cover The body is coupled to the upper end of the central shaft, the cover has a first surface, the fixed seat is coupled to the lower end of the central shaft, the fixed seat has a second surface, the second surface faces the first surface, Forming a limiting space between the second surface and the first surface, the rotating disk is disposed in the limiting space, and the central axis extends through the rotating disk, the rotating disk has a top surface, a bottom surface, and a shaft hole And a plurality of accommodating holes, the top surface facing the first surface of the cover body, and a first space formed between the top surface and the first surface, the bottom surface facing the second surface of the fixing base, the bottom surface Forming a second space between the second surface and the second surface, the shaft hole and the receiving holes respectively communicate with the top surface and the bottom surface, the receiving holes surrounding the shaft hole, the central axis penetrating the shaft hole The shaft hole has an inner side wall, and the outer side wall and the outer ring wall of the central shaft have a spacing therebetween. Each of the balls is respectively disposed on each of the receiving holes of the rotating disk, and each of the balls has an upper edge portion. a lower edge portion and an intermediate portion, the intermediate portion being located between the upper edge portion and the lower edge portion, the intermediate portion being received in the receiving hole, the upper edge portion protruding from the top surface and located at the top edge a first space, the upper edge portion abutting the first surface of the cover body, the lower edge portion protruding from the bottom And the lower edge portion is in contact with the second surface of the fixing seat, the fan wheel has a through hole, the central axis extends through the through hole, and the rotating disk is disposed in the through hole, and the fan wheel is coupled In the rotating disk, the fan wheel is rotatably coupled between the cover body and the fixed seat by the rotating disk and the balls, and the fan wheel, the rotating disk and each of the balls rotate synchronously around the central axis. And the cover body and the central axis do not rotate with the fan wheel, the rotating disk and each of the balls.

According to the present invention, the upper end portion and the lower end portion of the central shaft are respectively coupled to the cover body and the fixed seat, so that the rotating disk can be restricted between the cover body and the fixed seat centering on the central axis. When the space rotates, the central shaft and the cover body can prevent the external force from being pressed to cause the fan wheel to stop rotating, and the axial height of the fan structure can be reduced.

100‧‧‧Fan structure

110‧‧‧Base

111‧‧‧ openings

120‧‧‧ center axis

121‧‧‧Upper end

122‧‧‧Bottom

123‧‧‧ outer ring wall

130‧‧‧ cover

131‧‧‧ first surface

132‧‧‧First joint hole

133‧‧‧First ring groove

133a‧‧‧first opening

140‧‧‧ fixed seat

141‧‧‧ second surface

142‧‧‧second ring groove

142a‧‧‧ second opening

143‧‧‧Second junction hole

150‧‧‧ rotating disk

151‧‧‧ top surface

152‧‧‧ bottom

153‧‧‧ shaft hole

153a‧‧‧ inner side wall

154‧‧‧ accommodating holes

160‧‧‧ balls

161‧‧‧Top edge

162‧‧‧ Lower margin

163‧‧‧Intermediate

170‧‧‧fan wheel

171‧‧ Wheels

172‧‧‧ fan leaves

173‧‧‧through hole

180‧‧‧stator

D‧‧‧ spacing

S‧‧‧Limited space

S1‧‧‧ first space

S2‧‧‧Second space

Figure 1 is a cross-sectional view showing a structure of a fan in accordance with a first embodiment of the present invention.

Figure 2: An exploded cross-sectional view of the fan structure in accordance with a first embodiment of the present invention.

Figure 3 is a cross-sectional view showing a structure of a fan in accordance with a second embodiment of the present invention.

Figure 4 is a cross-sectional view showing a structure of a fan in accordance with a third embodiment of the present invention.

1 and 2, which are a first embodiment of the present invention, a fan structure 100 having a base 110, a central shaft 120, a cover 130, a fixed base 140, a rotating disc 150, and a plurality of a ball 160, a wheel 170 and a stator 180. The base 110 has an opening 111. The base 140 is disposed in the opening 111 and coupled to the base 110. In this embodiment, the stator 180 is disposed on the ball 110. The stator 140 is used to drive the fan wheel 170 to rotate, or in other embodiments, the stator 180 can also be disposed on the base 110.

Referring to FIGS. 1 and 2, the central shaft 120 has an upper end portion 121, a lower end portion 122 and an outer ring wall 123. The cover body 130 is coupled to the upper end portion 121 of the central shaft 120. The fixing base 140 is coupled. The cover 130 has a first surface 131, and the second surface 141 has a second surface 141 facing the first surface 131. In this embodiment, in the embodiment, the cover 130 has a first surface 131. The fixing base 140 is integrally formed with the central shaft 120. The central shaft 120 protrudes from the second surface 141. The cover 130 further has a first coupling hole 132. The first coupling hole 132 is recessed in the The first surface 131, the upper end portion 121 of the central shaft 120 is embedded in the first coupling hole 132, and the cover 130 is fixed on the fixing base 140 and formed between the second surface 141 and the first surface 131. A limit space S.

Referring to FIGS. 1 and 2, the rotating disk 150 is disposed in the limiting space S, and the central axis 120 extends through the rotating disk 150. The rotating disk 150 has a top surface 151, a bottom surface 152, and a shaft hole 153. A plurality of accommodating holes 154 are formed. The top surface 151 faces the first surface 131 of the cover body 130. A first space S1 is formed between the top surface 151 and the first surface 131. The bottom surface 152 faces the fixing base 140. A second space S2 is formed between the bottom surface 152 and the second surface 141. The shaft hole 153 and the receiving holes 154 respectively communicate with the top surface 151 and the bottom surface 152. The hole 154 surrounds the shaft hole 153. Preferably, the center of each of the receiving holes 154 is equidistant from the center of the shaft hole 153. The center shaft 120 extends through the shaft hole 153. The shaft hole 153 has an inner side wall. 153a, the inner side wall 153a of the shaft hole 153 and the outer ring wall 123 of the central shaft 120 have a spacing D. The rotating disk 150 rotates about the central axis 120. When the rotating disk 150 rotates, The center shaft 120 does not interfere with the rotating disk 150.

Referring to FIGS. 1 and 2, each of the balls 160 is disposed in each of the receiving holes 154 of the rotating disk 150. Each of the balls 160 has an upper edge portion 161, a lower edge portion 162 and an intermediate portion 163. The portion 163 is located between the upper edge portion 161 and the lower edge portion 162. The intermediate portion 163 is received in the receiving hole 154. The upper edge portion 161 protrudes from the top surface 151 and is located in the first space S1. The upper edge portion 161 is in contact with the first surface 131 of the cover body 130. The lower edge portion 162 protrudes from the bottom surface 152 and is located in the second space S2, and the lower edge portion 162 abuts the fixing seat 140. The second surface 141.

Referring to FIGS. 1 and 2 , in the embodiment, the first surface 131 of the cover 130 is provided with a first annular groove 133 , and the first annular groove 133 is recessed on the first surface 131 , the first The ring groove 133 has a first opening 133a, the first opening 133a communicates with the first space S1, and the first ring groove 133 surrounds the first coupling hole 132, and the upper edge portion 161 of each of the balls 160 is limited to The first ring groove 133, the upper edge portion 161 is in contact with the first ring groove 133, and the second surface 141 of the fixing seat 140 is provided with a second ring groove 142. The second ring groove 142 is recessed in the first ring groove 142. The second ring 142 has a second opening 142a. The second opening 142a communicates with the second space S2. The lower edge 162 of each of the balls 160 is restricted to the second ring groove 142. The lower edge portion 162 contacts the second ring groove 142, and the first ring groove 133 and The second ring groove 142 limits each of the balls 160 so that the balls 160 can be restrained between the cover body 130 and the fixing base 140 to prevent the balls 160 from swaying when rolling, thereby causing abnormal sound.

Referring to FIGS. 1 and 2, the fan wheel 170 has a hub 171', a plurality of blades 172 coupled to the hub 171, and a through hole 173. The center shaft 120 extends through the through hole 173. The rotating disk 150 is disposed on the rotating plate 150. The through hole 173 , the hub 171 of the fan wheel 170 is coupled to the rotating disk 150 , and the wheel 170 is rotatably coupled between the cover 130 and the fixed seat 140 by the rotating disk 150 and the balls 160 . In this embodiment, the hub 171 is coupled to the rotating disk 150 by laser welding. When the stator 180 drives the rotating wheel 170, the fan wheel 170 drives the rotating disk 150 and is disposed on the rotating disk. Each of the balls 160 on the 150 rotates synchronously about the central axis 120, and the cover 130 and the central axis 120 do not rotate with the fan wheel 170, the rotating disk 150, and each of the balls 160.

Since the rotating disk 150 is disposed in the limiting space S between the cover body 130 and the fixing base 140, when the external force presses the fan structure 100, the cover body 130 and the central shaft 120 can bear an external force to avoid the rotation. The disk 150 is forced to operate the fan structure 100.

Referring to FIG. 3, which is a second embodiment of the present invention, the second embodiment is different from the first embodiment in that the cover 130 is integrally formed with the central shaft 120. In this embodiment, the The central shaft 120 protrudes from the first surface 131 of the cover body 130. The fixing base 140 further has a second coupling hole 143. The second coupling hole 143 is recessed in the second surface 141. The second ring groove The second end of the central shaft 120 is embedded in the second joint hole 143.

Referring to FIG. 4, which is a third embodiment of the present invention, the third embodiment is different from the first embodiment in that the fixing base 140 has the second coupling hole 143, and the central axis 120 is disposed in the The first coupling hole 132 of the cover 130, the shaft hole 153 of the rotating disk 150, and the second coupling hole 143 of the fixing base 140, and the upper end portion 121 of the central axis 120 is embedded in the cover 130 The first bonding hole 132, The lower end portion 122 of the center shaft 120 is embedded in the second coupling hole 143 of the fixing base 140.

The scope of the present invention is defined by the scope of the appended claims, and any changes and modifications made by those skilled in the art without departing from the spirit and scope of the invention are within the scope of the present invention. .

100‧‧‧Fan structure

110‧‧‧Base

111‧‧‧ openings

120‧‧‧ center axis

121‧‧‧Upper end

122‧‧‧Bottom

123‧‧‧ outer ring wall

130‧‧‧ cover

131‧‧‧ first surface

132‧‧‧First joint hole

140‧‧‧ fixed seat

141‧‧‧ second surface

150‧‧‧ rotating disk

151‧‧‧ top surface

152‧‧‧ bottom

153‧‧‧ shaft hole

153a‧‧‧ inner side wall

154‧‧‧ accommodating holes

160‧‧‧ balls

161‧‧‧Top edge

162‧‧‧ Lower margin

163‧‧‧Intermediate

170‧‧‧fan wheel

171‧‧ Wheels

172‧‧‧ fan leaves

173‧‧‧through hole

180‧‧‧stator

D‧‧‧ spacing

S‧‧‧Limited space

S1‧‧‧ first space

S2‧‧‧Second space

Claims (7)

A fan structure comprising: a central shaft having an upper end portion, a lower end portion and an outer ring wall; a cover body coupled to the upper end portion of the central shaft, the cover body having a first surface; And a second surface, the second surface facing the first surface, forming a limiting space between the second surface and the first surface; a rotating disk disposed in the limiting space, wherein the central axis extends through the rotating disk, the rotating disk has a top surface, a bottom surface, a shaft hole and a plurality of receiving holes, the top surface facing the first of the cover body Forming a first space between the top surface and the first surface, the bottom surface facing the second surface of the fixing seat, and forming a second space between the bottom surface and the second surface, the shaft hole and the The receiving holes respectively communicate with the top surface and the bottom surface, the receiving holes surround the shaft hole, the central shaft extends through the shaft hole, the shaft hole has an inner side wall, and the inner side wall and the outer ring of the central shaft There is a spacing between the walls; a plurality of balls are respectively set at the turn Each of the accommodating holes of the disk has an upper edge portion, a lower edge portion and an intermediate portion, the intermediate portion being located between the upper edge portion and the lower edge portion, the intermediate portion being received in the receiving portion In the hole, the upper edge protrudes from the top surface and is located in the first space, and the upper edge portion abuts the first surface of the cover body, the lower edge portion protrudes from the bottom surface and is located in the second space And the lower edge portion abuts the second surface of the fixing seat; and a fan wheel has a through hole, the central axis extends through the through hole, the rotating disk is disposed in the through hole, and the fan wheel is coupled to the rotating disk And the fan wheel is rotatably coupled between the cover body and the fixed seat by the rotating disk and the balls, wherein the fan wheel, the rotating disk and each of the balls rotate synchronously around the central axis, and the cover The body and the central axis do not rotate with the fan wheel, the rotating disk and each of the balls. The fan structure of claim 1, wherein the first surface of the cover a first annular groove is defined, the first annular groove is recessed on the first surface, the first annular groove has a first opening, the first opening communicates with the first space, and the upper edge of each of the balls is Restricted to the first annular groove, and the upper edge portion contacts the first annular groove. The fan structure of claim 1, wherein the second surface of the fixing seat is provided with a second ring groove, the second ring groove is recessed on the second surface, and the second ring groove has a first The second opening communicates with the second space, the lower edge portion of each of the balls is restricted to the second ring groove, and the lower edge portion contacts the second ring groove. The fan structure of claim 1, wherein the fixing base is integrally formed with the central shaft, the cover body further has a first coupling hole, and the first coupling hole is recessed on the first surface, The upper end portion of the center shaft is embedded in the first coupling hole. The fan structure of claim 1, wherein the cover body is integrally formed with the central shaft, the fixing base further has a second coupling hole, and the second coupling hole is recessed on the second surface, The lower end of the central shaft is embedded in the second coupling hole. The fan structure of claim 1, wherein the cover body further has a first coupling hole, the first coupling hole is recessed on the first surface, and the fixing seat further has a second coupling hole, The second coupling hole is recessed in the second surface, and the upper end portion of the central axis is embedded in the first coupling hole, and the lower end portion of the central axis is embedded in the second coupling hole. The fan structure of claim 1, further comprising a base coupled to the base.