TWI410563B - Fan structure - Google Patents

Abstract

Fan structure comprises a first impeller and a second impeller. The first impeller has a first annular substrate, a plurality of first ribs and a plurality of first blades. The first ribs and the first blades are formed on the first annular substrate. Each of the first ribs has a combining hole and the adjacent first blades have a first space. The second impeller has a hub, a second annular substrate, a plurality of second ribs, a plurality of second blades and at least one fastener formed on the second ribs. The second ribs and the second blades are formed on the second annular substrate and the adjacent second blades have a second space. The fastener of the second impeller is inserted the combining hole of the first impeller, and each of the first blades is located on the second space and each of the second blades is located on the first space. The first blades are arranged between the second blades.

Description

Fan structure

The present invention relates to a fan structure, and more particularly to a combined blade structure.

As shown in FIG. 1 , the conventional air blower blade structure 10 is manufactured by a molding method (not shown) by an injection molding method. The wind drum blade structure 10 includes a base 11 and a The hub 12 of the base 11 , a frame 13 and a plurality of blades 14 connecting the frame 13 and the base 11 , the wind drum blade structure 10 generally increases the number of blades and reduces the blades in order to achieve high static pressure performance. 14 distances D, so it also makes the processing of the mold difficult, and must use wire cutting or discharge treatment to complete the molding die, thus resulting in increased production costs, and the reduction of the spacing D will also cause the strength of the mold The weakening and the service life become shorter; in addition, when the sample of the fan blade structure 10 is manufactured, the spacing D between the blades 14 is reduced, so that the larger outer diameter forming tool cannot be used and must be changed. The small outer diameter forming tool is processed, but thus the manufacturing time of the sample of the wind drum blade structure 10 is also increased.

The main object of the present invention is to provide a fan structure including a first impeller and a second impeller having a first annular substrate, a plurality of first ribs, and a plurality of first blades. The first annular substrate has a first outer side surface, a pair of first inner side surfaces that should be the first outer side surface, a first lower surface that connects the first outer side surface and the first inner side surface, and a pair of should a first upper surface of the first lower surface, The first ribs and the first blade systems are formed on the first annular substrate, and each of the first ribs has a coupling hole, and the adjacent first blade has a first The second impeller has a hub, a second annular substrate, a plurality of second ribs, a plurality of second blades, and at least one coupling member formed on the second ribs, the second The annular substrate has a second outer sidewall, a second inner sidewall, a second upper surface connecting the second outer sidewall and the second inner sidewall, and a pair of second lower surfaces corresponding to the second upper surface. The second ribs and the second blades are formed on the second annular substrate, and the adjacent second blades have a second accommodating space, and the first impeller is the first The first lower surface of the annular substrate faces the second upper surface of the second annular substrate of the second impeller and is coupled to the second impeller, and the coupling member of the second impeller is inserted into the first The coupling hole of the impeller, wherein each of the first blade systems is located in the second receiving space and each of the second blade systems Respectively located at the first receiving space, the plurality of first blades and the plurality of second blades arranged at intervals based.

The fan structure of the present invention separately manufactures the first impeller and the second impeller such that the first vanes of the first impeller and the second vanes of the second impeller are easy to manufacture, and by the second The coupling member of the impeller is inserted into the coupling hole of the first impeller, so that the first impeller is coupled and fixed to the second impeller, and each of the first blades is located in the second accommodating space and each of the first The two blades are respectively located in the first accommodating space to achieve the purpose of increasing the fan blades of the fan structure. In addition, when the molding die of the first impeller and the second impeller are separately fabricated, the manufacturing difficulty of the molding die can be reduced, and the strength and elongation of the molding die can be improved. The life of the molding die. Furthermore, when the samples of the first impeller and the second impeller are separately manufactured, the first impeller and the second impeller can be fabricated and processed by a larger outer diameter forming tool to save the processing cost of the sample.

Referring to Figures 2, 3 and 4, a preferred embodiment of the present invention, a fan structure 100 includes a first impeller 110 and a second impeller 120. Please refer to Figures 2 and 3, the first The impeller 110 has a first annular substrate 111, a plurality of first ribs 112, and a plurality of first blades 113. The first ribs 112 and the first blades 113 are formed on the first annular substrate. In this embodiment, the first annular substrate 111 has a first outer side surface 111a, a pair of first inner side surfaces 111b of the first outer side surface 111a, a first outer side surface 111a and the first a first lower surface 111c of an inner side surface 111b, and a pair of first upper surface 111d of the first lower surface 111c, the first ribs 112 are formed on the first inner side surface 111b, and each of the first ribs The portion 112 has a coupling hole 112a. The first blade 113 is formed on the first lower surface 111c, and the adjacent first blade 113 has a first accommodating space S1. Each of the first blades 113 includes a first outer blade 113a and a first inner blade 113b, and the first outer blade 113a It protrudes from the first substrate 111 of the first ring outer surface 111a, 113b of the first inner blade protrudes from the first ring-based substrate 111 of the first lower surface 111c.

Referring to FIGS. 2 and 4, the second impeller 120 has a hub 121, a second annular substrate 122, a plurality of second ribs 123, a plurality of second blades 124, and at least one formed in the second a coupling member 125 of the rib 123, the second annular substrate 122 surrounds the hub 121, and the second The ribs 123 are located between the second annular substrate 122 and the hub 121. In this embodiment, the two ends of the second ribs 123 are respectively connected to the second annular substrate 122 and the hub 121. The second plurality of blades 124 are formed on the second annular substrate 122, and the adjacent second blades 124 have a second accommodating space S2, and the second annular substrate 122 has a second The outer side surface 122a, a pair of second inner side surfaces 122b of the second outer side surface 122a, a second upper surface 122c connecting the second outer side surface 122a and the second inner side surface 122b, and a pair of upper second surface 122c The second lower surface 122d is formed on the second inner side surface 122b, and each of the second ribs 123 has a top surface 123a. The joint member 125 is formed on the top surface 123a. The second blade 124 is formed on the second upper surface 122c. In this embodiment, each of the second blades 124 includes a second outer blade 124a and a second inner blade 124b. The second outer blade 124a protrudes from the second outer side surface 122a of the second annular substrate 122, and the second inner blade 124b protrudes from the first The second upper surface 122c of the two annular substrate 122.

Referring to FIGS. 2, 5 and 6 , the first impeller 110 is coupled to the second impeller 120 , wherein the first lower surface 111 c of the first annular substrate 111 faces the second annular substrate 122 . The second upper surface 122c, each of the first blades 113 is located in the second accommodating space S2, and each of the second blades 124 is located in the first accommodating space S1, and each of the first blades 113 and each of the first blades 113 The second blades 124 are spaced apart, and the first blades 113 and the second blades 124 surround the hub 121 of the second impeller 120. The coupling member 125 of the second impeller 120 is inserted into the hub The coupling hole 112a of the first impeller 110.

Referring to FIGS. 2, 3, 5, and 6, in the embodiment, the first impeller 110 further has at least one pair of guiding tabs 114 formed on the first ribs 112. The pair of guiding tabs 114 The guiding system has a guiding groove 114a. The guiding groove 114a communicates with the coupling hole 112a. The coupling member 125 is inserted into the guiding groove 114a.

Referring to Figures 2, 6, 7, and 8, each of the first ribs 112 has a surface 112b and a latching groove 112c recessed in the surface 112b. The latching groove 112c communicates with the coupling hole 112a. The coupling member 125 has a ring surface 125a and at least one latching portion 125b protruding from the ring surface 125a. The latching portion 125b is latched in the latching slot 112c. Referring to FIG. 6, preferably Each of the second ribs 123 is interposed between each of the pair of guiding pieces 114 to increase the structural strength of the first impeller 110 and the second impeller 120. Since the first impeller 110 and the second impeller 120 are separately manufactured, the first vane 113 of the first impeller 110 and the second vanes 124 of the second impeller 120 are easily manufactured, and The coupling member 125 of the second impeller 120 is inserted into the coupling hole 112a of the first impeller 110, so that the first impeller 110 is coupled and fixed to the second impeller 120, and each of the first blades 113 is located respectively. The second accommodating space S2 and each of the second blades 124 are respectively located in the first accommodating space S1 for the purpose of increasing the fan blade of the fan structure; further, the first impeller 110 and the second impeller are separately fabricated. In the molding of the mold 120, since the spacing between the first blades 113 of the first impeller 110 is large, and the spacing between the second blades 124 of the second impeller 120 is large, the molding die can be reduced. It is difficult to manufacture and can increase the strength of the molding die and extend the service life of the molding die.

In addition, referring to the figures 2, 3 and 4, in the embodiment, the first impeller 110 further has a plurality of third ribs 115 and at least one of the plug posts formed on the third ribs 115. 116. The second impeller 120 has a plurality of fourth ribs 126 and at least one socket 127 formed on the fourth ribs 126. The plug posts 116 are inserted into the sockets 127. In this embodiment, the socket 127 has a socket 127a, and each of the sockets 127a extends through the fourth ribs 126, and the sockets 116 are inserted into the sockets 127. The insertion groove 127a increases the bonding strength between the first impeller 110 and the second impeller 120. Preferably, please refer to FIG. 4 again. In this embodiment, each of the second ribs 123 has a first width L1, and each of the fourth ribs 126 has a second width L2. The width L2 is greater than the first width L1, so that the plurality of vents H of the fan structure 100 have a better ventilation amount to increase heat dissipation efficiency.

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. .

10‧‧‧Wind drum blade structure

11‧‧‧Base

12‧‧·wheels

13‧‧‧ frame

14‧‧‧ leaves

100‧‧‧Fan structure

110‧‧‧First impeller

111‧‧‧First annular substrate

111a‧‧‧First outer side

111b‧‧‧ first inner side

111c‧‧‧ first lower surface

111d‧‧‧ first upper surface

112‧‧‧First rib

112a‧‧‧Combination hole

112b‧‧‧ surface

112c‧‧‧ card slot

113‧‧‧First blade

113a‧‧‧First outer blade

113b‧‧‧First inner blade

114‧‧‧Guide

114a‧‧‧ guiding slot

115‧‧‧ Third rib

116‧‧‧Plug

120‧‧‧Second impeller

121‧‧·wheels

122‧‧‧Second annular substrate

122a‧‧‧Second outer side

122b‧‧‧Second inner side

122c‧‧‧Second upper surface

122d‧‧‧Second lower surface

123‧‧‧second rib

123a‧‧‧ top

124‧‧‧second blade

124a‧‧‧Second outer blade

124b‧‧‧Second inner blade

125‧‧‧Connected parts

125a‧‧‧Torus

125b‧‧‧Card Department

126‧‧‧fourth rib

127‧‧‧ socket

127a‧‧‧ Socket slot

S1‧‧‧First accommodation space

S2‧‧‧Second accommodating space

D‧‧‧ spacing

H‧‧‧Inlet and outlet

L1‧‧‧ first width

L2‧‧‧ second width

Figure 1: A perspective view of a conventional fan blade structure.

Figure 2 is an exploded perspective view of a fan structure in accordance with a preferred embodiment of the present invention.

Figure 3 is a perspective view of a first impeller of the fan structure in accordance with a preferred embodiment of the present invention.

Figure 4 is a perspective view of a second impeller of the fan structure in accordance with a preferred embodiment of the present invention.

Figure 5 is a perspective view of the fan structure in accordance with a preferred embodiment of the present invention.

Figure 6 is another perspective view of the fan structure in accordance with a preferred embodiment of the present invention.

Figure 7 is a top plan view of the fan structure in accordance with a preferred embodiment of the present invention.

Figure 8 is a cross-sectional view of the fan structure taken along the line A-A of Figure 7 in accordance with a preferred embodiment of the present invention.

100‧‧‧Fan structure

110‧‧‧First impeller

111‧‧‧First annular substrate

111a‧‧‧First outer side

111b‧‧‧ first inner side

111c‧‧‧ first lower surface

111d‧‧‧ first upper surface

112‧‧‧First rib

112a‧‧‧Combination hole

112b‧‧‧ surface

112c‧‧‧ card slot

113‧‧‧First blade

113a‧‧‧First outer blade

113b‧‧‧First inner blade

114‧‧‧Guide

114a‧‧‧ guiding slot

115‧‧‧ Third rib

116‧‧‧Plug

120‧‧‧Second impeller

121‧‧·wheels

122‧‧‧Second annular substrate

122a‧‧‧Second outer side

122b‧‧‧Second inner side

122c‧‧‧Second upper surface

122d‧‧‧Second lower surface

123‧‧‧second rib

123a‧‧‧ top

124‧‧‧second blade

124a‧‧‧Second outer blade

124b‧‧‧Second inner blade

125‧‧‧Connected parts

125a‧‧‧Torus

125b‧‧‧Card Department

126‧‧‧fourth rib

127‧‧‧ socket

127a‧‧‧ Socket slot

S1‧‧‧First accommodation space

S2‧‧‧Second accommodating space

Claims (10)

A fan structure includes at least a first impeller having a first annular substrate, a plurality of first ribs, and a plurality of first blades, and the first ribs and the first blade systems are formed Each of the first ribs has a coupling hole, the adjacent first blade has a first accommodating space, and a second impeller has a hub. a second annular substrate, a plurality of second ribs, a plurality of second blades, and at least one joint formed on the second ribs, the second ribs being located on the second annular substrate and the Between the hubs, the second blades are formed on the second annular substrate, and the adjacent second blades have a second accommodating space, wherein each of the first blades is located at the second The space is disposed, and each of the second blade systems is located in the first accommodating space, and the coupling member is inserted into the coupling hole. The fan structure of claim 1, wherein the first annular substrate has a first outer side surface, a pair of first inner side surfaces that should be the first outer side surface, a first outer side surface and the first outer side surface a first lower surface of the first inner side surface and a pair of first upper surfaces of the first lower surface, the first ribs are formed on the first inner side surface, and the first blade systems are formed under the first surface. The fan structure of claim 2, wherein the second annular substrate has a second outer side surface, a pair of second inner side surfaces that should be the second outer side surface, a second outer side surface, and the second annular side a second upper surface of the second inner side surface, and a pair of second lower surfaces of the second upper surface, the second ribs are formed on the second inner side, and the second blade is formed on the second The first lower surface of the first annular substrate faces the second ring The second upper surface of the substrate. The fan structure of claim 2, wherein each of the first blade systems includes a first inner blade and a first outer blade, the first outer blade protruding from the first annular substrate a first outer side surface, the first inner blade protruding from the first lower surface of the first annular substrate. The fan structure of claim 3, wherein each of the second blade systems includes a second inner blade and a second outer blade, the second outer blade protruding from the second annular substrate a second outer side surface, the second inner blade protruding from the second upper surface of the second annular substrate. The fan structure of claim 1, wherein the first impeller has at least one pair of guiding tabs formed on the first ribs, the pair of guiding strips having a guiding slot, The guiding groove is connected to the coupling hole, and the coupling member is received in the guiding groove. The fan structure of claim 1, wherein each of the first ribs has a surface and a snap groove recessed in the surface, the snap groove is connected to the joint hole, and the joint is The utility model has a ring surface and at least one latching portion protruding from the annular surface, wherein the latching portion is inserted into the engaging groove. The fan structure of claim 1, wherein the first impeller has a plurality of third ribs and at least one plug post formed on the third ribs, the second impeller having a plurality of The fourth rib and the at least one socket formed on the fourth ribs are inserted into the socket. The fan structure of claim 8, wherein the plug socket has a plug slot, and the plug post is inserted into the plug slot of the plug socket. The fan structure of claim 1, wherein the two ends of the second ribs are respectively connected to the second annular substrate and the hub.