TWI413346B - Fan case - Google Patents

Abstract

A motor base comprises a supporting member and an enclosure member. The supporting member has an outer surface and an inner surface, with the inner surface forming a channel. The channel has an opening portion on an enc thereof, as well as a coupling portion on another end thereof. The enclosure member is coupled to the opening portion of the supporting member and has opposing first and second surfaces. The first surface faces the channel of the supporting member. The motor base may have at least one heat-dissipating hole on the enclosure member thereof, with the heat-dissipating hole extending through the first and second surfaces. Alternatively, the motor base may have at least a heat-dissipating gap extending through the outer and inner surfaces. In this way, the motor base has better heat dissipation efficiency.

Description

Fan housing

The present invention relates to a fan housing, and more particularly to a fan housing that can be combined with components such as a coil assembly and a rotor to form a cooling fan.

Referring to FIG. 1, a conventional motor 8 is disclosed. The conventional motor 8 generally includes a motor base 81, a housing 82, a drive assembly 83, and a rotor 84. The motor base 81 is provided with a bottom ring 811 for engaging a cover 812; the outer casing 82 is integrally formed at one end of the bottom ring 811; the drive assembly 83 is disposed inside the outer casing 82, and the drive assembly 83 includes a coil assembly 831 and a circuit board 832, the coil assembly 831 and the circuit board 832 are electrically connected to each other; the rotor 84 is provided with a central shaft 841, the central shaft 841 rotatably coupled to the outer casing 82, and the center The shaft 841 is further provided with a permanent magnet 842, the permanent magnet 842 is located inside the outer casing 82, and the permanent magnet 842 has an air gap between the coil assembly 831; thereby, the circuit board 832 controls the coil assembly 831 to generate a magnetic field. Thereafter, the rotor 84 can be driven to rotate.

In general, the bottom ring 811 of the motor base 81 of the conventional motor 8 can be further combined with a frame 9 by a plurality of ribs 91; in addition, a plurality of blades 843 can be formed on the outer circumference of the rotor 84; Therefore, the fan frame 9 can be coupled to an electronic product. During the rotation of the rotor 84 of the conventional motor 8, each of the blades 843 can be designed to guide the airflow to the electronic device. The product is prone to generate high heat to provide a predetermined heat dissipation.

Moreover, the drive assembly 83 of the conventional motor 8 is disposed inside the outer casing 82. The circuit board 832 of the drive assembly 83 must be energized to control the coil assembly 831 to generate a magnetic field. Therefore, during the actual operation of the conventional motor 8, the conventional motor 8 The drive assembly 83 is inevitably prone to high heat. However, the motor base 81 of the conventional motor 8 does not have a structural design for dissipating heat from the drive assembly 83; wherein the bottom ring 811 has only the function of supporting the outer casing 82 or the connecting fan frame 9, the cover The 812 is used to close the outer casing 82. Therefore, the motor base 81 fails to provide a better heat dissipation mechanism of the driving assembly 83, so that the high heat generated by the driving assembly 83 is difficult to dissipate heat, resulting in the conventional motor 8. Reduced service life.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the above-described disadvantages of the conventional motor base and to provide a fan housing having a heat dissipation mechanism.

A fan housing includes a support member and a closure member. The support member has an outer surface and an inner surface, the inner surface defines a passage, one end of the passage is provided with an opening portion, and the other end is provided with a joint portion, the joint portion is combined with a casing, and the inner portion of the outer casing is coupled to drive a rotor a rotating drive assembly; the closure member is coupled to the opening of the support member, the closure member having a first surface opposite to the second surface, the first surface facing the passage of the support member; wherein the fan housing The at least one heat dissipation hole may be disposed in the first surface and the second surface, or the fan housing may be provided with at least one heat dissipation opening, the at least one heat dissipation opening Through the outer surface and the inner surface.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

Referring to Figures 2 and 3, the fan housing 1 of the first embodiment of the present invention includes at least a support member 11 and a closure member 12. The support member 11 can be combined with the closure member 12 to form the fan casing 1, thereby making the fan casing 1 applicable to various motor structures or cooling fans.

The support member 11 is preferably a ring body. The support member 11 has an outer surface 111 and an inner surface 112. The inner surface 112 defines a channel 113. One end of the channel 113 is provided with an opening portion 114, and the other end is provided with a hole. The connecting portion 115 is preferably provided with a plurality of limiting protrusions 114a, and the connecting portion 115 is provided with a casing (refer to the following description).

The closure member 12 is coupled to the opening portion 114 of the support member 11. The closure member 12 has a first surface 121 and a second surface 122 opposite to each other. The first surface 121 faces the passage 113 of the support member 11, and the first surface 121 of the closure member 12 is preferably provided with a bearing seat 123 for coupling a bearing (described later); further, the closure member 12 The first surface 121 can further define a convex portion 124 located at the outer periphery of the sealing member 12 and surrounding the bearing seat 123, and the convex portion 124 can form a ring flange 125. Preferably, the edge 125 is provided with a plurality of notches 125a, and the number and position of each of the notches 125a correspond to the limiting protrusions 114a of the support member 11. When the sealing member 12 is coupled to the opening portion 114, each of the limiting protrusions The block 114a can be snapped into each of the slots 125a to effectively position the closure member 12 and also prevent the closure member 12 from rotating arbitrarily.

The heat dissipation hole 13 is provided through the first surface 121 and the second surface 122 of the sealing member 12; The hole 13 has a function of allowing airflow to provide a predetermined heat dissipation effect.

According to the foregoing drawings and with reference to FIG. 4, it is disclosed that the fan casing 1 of the first embodiment of the present invention is actually applied to a heat dissipation fan. In the embodiment shown in the figure, the fan casing of the present invention is disclosed. The seat 1 can be applied to an inner rotor type motor and a heat dissipation fan having the inner rotor type motor, wherein:

The joint portion 115 of the support member 11 can be combined with a casing 14, wherein the support member 11 can be integrally formed with the outer casing 14, or the outer casing 14 can be combined with the support member 11 by means of assembly; A plurality of bearings 141 may be combined, and one of the bearings 141 may be coupled to the bearing housing 123 of the closure member 12 and located inside the housing 14.

A drive assembly 15 and a rotor 16 are additionally provided. The driving assembly 15 is coupled to the inside of the casing 14 via the opening portion 114 and the passage 113. The driving assembly 15 includes a coil assembly 151 and a circuit board 152. The coil assembly 151 and the circuit board 152 are electrically connected to each other; The rotor 16 is provided with a central shaft 161 rotatably coupled to each of the bearings 141, and the central shaft 161 is further provided with a permanent magnet 162, the permanent magnet 162 is located inside the outer casing 14, and the permanent magnet 162 is There is an air gap between the coil sets 151; whereby the circuit board 152 controls the coil set 151 to energize to generate a magnetic field, and then the rotor 16 can be driven to rotate.

The closure member 12 is configured to close the opening portion 114 of the support member 11 to prevent the drive assembly 15 and the bearing member 141 from coming off the outer casing 14. Thereby, the support member 11, the closure member 12, the outer casing 14, the drive assembly 15 and the rotor 16 and the like can together constitute a motor structure, the motor structure can be further applied to a heat dissipation fan; for example, the outer surface 111 of the support member 11 can be provided with a plurality of connecting members 17, each of the connecting members 17 is externally connected to a frame 18; further, a plurality of blades 163 may be formed on the outer circumferential surface of the rotor 16 to constitute the heat dissipation fan structure.

The main technical feature of the fan casing 1 of the first embodiment of the present invention is: when the fan casing 1 is applied to a motor structure or a cooling fan, and the driving component 15 also generates high heat during actual operation, such as As shown in FIG. 4 , the high heat generated by the driving component 15 can be dissipated to the outside of the outer casing 14 by using the plurality of heat dissipation holes 13 provided by the sealing member 12; therefore, the utilization is utilized. The heat dissipation mechanism provided by the fan casing 1 to the driving assembly 15 of the present invention ensures that the operating temperature of the driving component 15 located inside the casing 14 is not excessively high, thereby improving the service life of the motor structure or the cooling fan.

Moreover, referring to FIG. 4 again, when the user assembles the circuit board 152, the circuit board 152 can be clamped between the ring flange 125 and the coil assembly 151, and more importantly, when When the first surface 121 of the closure member 12 has the protrusion 124, the ring flange 125 can be formed on the protrusion 124, and the design of the protrusion 124 ensures the bonding to the ring flange 125. A distance (D) is formed between the circuit board 152 and the first surface 121 of the sealing member 12, so that the high heat generated by the driving component 15 can be ensured through the spacing (D) and through the heat dissipation holes 13 Dissipated to the outside of the outer casing 14.

Referring to Figures 5 and 6, the fan housing 2 of the second embodiment of the present invention includes at least a support member 21 and a closure member 22. The support member 21 The outer surface 211, the inner surface 212, the channel 213, the opening portion 214, the joint portion 215 and the limiting protrusion 214a, and the first surface 221, the second surface 222, the bearing seat 223, and the convex portion 224 of the closure member 22 The ring flange 225 and the notch 225a are the same as the corresponding structural features disclosed in the fan case 1 of the first embodiment; in addition, as shown in FIG. 7, the fan case 2 is also applicable. Motor structure and cooling fan, related components such as housing 24, bearing 241, drive assembly 25, coil assembly 251, circuit board 252, rotor 26, central shaft 261, permanent magnet 262, blade 263, connector 27, and fan frame 28, The same structural features are disclosed in the fan housing 1 of the first embodiment; therefore, the same structural features of the fan housing 2 of the present embodiment and the fan housing 1 of the first embodiment are not described herein. .

Referring to Figures 5, 6 and 7, the difference between the fan casing 2 of the second embodiment of the present invention and the fan casing 1 of the first embodiment is that the closure member 22 is not provided as in the first embodiment. The plurality of heat dissipation holes 13 are provided in the support member 21, and a plurality of heat dissipation ports 23 are provided in the support member 21 (only one may be provided according to actual requirements), and the heat dissipation openings 23 extend through the outer surface 211 and the inner surface of the support member 21. 212; thereby, each of the heat dissipation ports 23 also has a function of allowing airflow to provide a predetermined heat dissipation effect.

The main technical feature of the fan case 2 of the second embodiment of the present invention is that the heat generated by the drive unit 25 can utilize the heat dissipation ports 23 by the design of the plurality of heat dissipation ports 23 provided by the support member 21. Dissipated to the outside of the outer casing 24; more importantly, when the number of the heat dissipation ports 23 is two or more, one of the heat dissipation ports 23 can be opposed to the other heat dissipation port 23, thereby constituting a convection function, thereby improving the overall heat dissipation. Effect; again, when When the fan housing 2 has a plurality of heat dissipation ports 23, any one of the heat dissipation ports 23 can serve as an outlet function at the same time, so that a power connection 29 of the circuit board 252 can pass through the heat dissipation opening 23 to provide better. Assembly convenience.

Referring to Figures 8 and 9, the fan housing 3 of the third embodiment of the present invention includes at least a support member 31 and a closure member 32. The outer surface 311, the inner surface 312, the channel 313, the opening 314, the joint portion 315 and the limiting protrusion 314a of the support member 31, and the first surface 321, the second surface 322, the bearing seat 323 of the sealing member 32, The convex portion 324, the ring flange 325 and the missing groove 325a are the same as the corresponding structural features disclosed in the fan housing 2 of the second embodiment; in addition, as shown in FIG. 10, the fan housing 3 The same applies to the motor structure and the heat dissipation fan, and related components such as the outer casing 34, the bearing 341, the drive assembly 35, the coil assembly 351, the circuit board 352, the rotor 36, the central shaft 361, the permanent magnet 362, the blade 363, the connecting member 37, and the fan Both the frame 38 and the power supply terminal 39 are also identical to the corresponding structural features disclosed in the fan housing 2 of the second embodiment; therefore, the fan housing 3 of the present embodiment is identical to the fan housing 2 of the second embodiment. Structural features are not described here.

Referring to FIGS. 8, 9, and 10, the fan housing 3 of the third embodiment of the present invention is different from the fan housings 1, 2 of the first and second embodiments in that the closing member 32 is provided with a plurality of The heat dissipation holes 33a (only one may be provided according to actual needs), each of the heat dissipation holes 33a penetrating the first surface 321 and the second surface 322 of the closure member 32; the support member 31 is provided with a plurality of heat dissipation ports 33b (may also be practical The heat dissipation port 33b penetrates the outer surface 311 and the inner surface 312 of the support member 31; thereby, the fan housing 3 of the third embodiment of the present invention can simultaneously have the first and second implementations. The advantages of the fan housings 1, 2 are provided to provide better utility.

It is known that, by using the heat dissipation mechanism provided by the fan casings 1, 2, and 3 of the present invention, when the fan casings 1, 2, and 3 are used as a motor structure or a cooling fan, the driving components 15 and 25 can be provided. 35 better heat dissipation effect to achieve the effect of improving the service life.

While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.

〔this invention〕

1‧‧‧Fan housing

11‧‧‧Support

111‧‧‧ outer surface

112‧‧‧ inner surface

113‧‧‧ channel

114‧‧‧ openings

114a‧‧‧ Limit bumps

115‧‧‧Combination Department

12‧‧‧Closed

121‧‧‧ first surface

122‧‧‧ second surface

123‧‧‧ bearing housing

124‧‧‧ raised parts

125‧‧‧ ring flange

125a‧‧‧ Missing slot

13‧‧‧ vents

14‧‧‧Shell

141‧‧‧ bearing

15‧‧‧Drive components

151‧‧‧ coil set

152‧‧‧ boards

16‧‧‧Rotor

161‧‧‧ center axis

162‧‧‧ permanent magnet

163‧‧‧ blades

17‧‧‧Connecting parts

18‧‧‧Fan frame

2‧‧‧Fan housing

21‧‧‧Support

211‧‧‧ outer surface

212‧‧‧ inner surface

213‧‧‧ channel

214‧‧‧ openings

214a‧‧‧ Limit bumps

215‧‧‧Combination Department

22‧‧‧Closed

221‧‧‧ first surface

222‧‧‧ second surface

223‧‧‧ bearing housing

224‧‧ ‧ raised parts

225‧‧‧ring flange

225a‧‧‧ Missing slot

23‧‧‧ vents

24‧‧‧ Shell

241‧‧‧ bearing

25‧‧‧Drive components

251‧‧‧ coil set

252‧‧‧ circuit board

26‧‧‧Rotor

261‧‧‧ center axis

262‧‧‧ permanent magnet

263‧‧‧ leaves

27‧‧‧Connecting parts

28‧‧‧Fan frame

29‧‧‧Power wiring

3‧‧‧Fan housing

31‧‧‧Support

311‧‧‧ outer surface

312‧‧‧ inner surface

313‧‧‧ channel

314‧‧‧ openings

314a‧‧‧ Limit bumps

315‧‧‧Combination Department

32‧‧‧Closed

321‧‧‧ first surface

322‧‧‧ second surface

323‧‧‧ bearing housing

324‧‧ ‧ raised parts

325‧‧‧ ring flange

325a‧‧‧ Missing slot

33a‧‧‧ vents

33b‧‧‧ vents

34‧‧‧Shell

341‧‧‧ bearing

35‧‧‧Drive components

351‧‧‧ coil group

352‧‧‧ boards

36‧‧‧Rotor

361‧‧‧ center axis

362‧‧‧ permanent magnet

363‧‧‧ leaves

37‧‧‧Connecting parts

38‧‧‧Fan frame

39‧‧‧Power wiring

[study]

8‧‧‧Motor

81‧‧‧Fan housing

811‧‧‧ bottom ring

812‧‧‧ Cover

82‧‧‧ Shell

83‧‧‧Drive components

831‧‧‧ coil set

832‧‧‧ boards

84‧‧‧Rotor

841‧‧‧ center axis

842‧‧‧ permanent magnet

843‧‧‧ leaves

9‧‧‧Fan frame

91‧‧‧ Ribs

Figure 1: A cross-sectional view of a conventional motor base.

Fig. 2 is an exploded perspective view showing the fan casing of the first embodiment of the present invention.

Fig. 3 is a sectional view showing the combination of the fan casing of the first embodiment of the present invention.

Fig. 4 is a sectional view showing the combination of a fan housing of the first embodiment of the present invention applied to a motor structure and a cooling fan.

Fig. 5 is an exploded perspective view showing a fan housing of a second embodiment of the present invention.

Figure 6 is a sectional view showing the combination of the fan casing of the second embodiment of the present invention.

Figure 7 is a cross-sectional view showing a combination of a fan housing of a second embodiment of the present invention applied to a motor structure and a cooling fan.

Figure 8 is a perspective exploded view of a fan housing of a third embodiment of the present invention.

Figure 9 is a sectional view showing the combination of a fan housing of a third embodiment of the present invention.

Fig. 10 is a sectional view showing the combination of a fan housing of a third embodiment of the present invention applied to a motor structure and a cooling fan.

1‧‧‧Fan housing

11‧‧‧Support

111‧‧‧ outer surface

112‧‧‧ inner surface

113‧‧‧ channel

114‧‧‧ openings

114a‧‧‧ Limit bumps

115‧‧‧Combination Department

12‧‧‧Closed

121‧‧‧ first surface

122‧‧‧ second surface

123‧‧‧ bearing housing

124‧‧‧ raised parts

125‧‧‧ ring flange

125a‧‧‧ Missing slot

13‧‧‧ vents

17‧‧‧Connecting parts

18‧‧‧Fan frame

Claims (13)

A fan housing includes: a support member having an outer surface and an inner surface, the inner surface forming a passage, one end of the passage is provided with an opening portion, and the other end is provided with a joint portion, the joint portion is combined with a casing The housing is internally coupled to a drive assembly that drives rotation of a rotor; and a closure member is coupled to the opening of the support member, the closure member having a first surface and a second surface opposite the first surface a passage of the support member; wherein the closure member is provided with at least one heat dissipation hole, the at least one heat dissipation hole penetrating the first surface and the second surface. The fan case according to claim 1, wherein the support member is provided with at least one heat dissipation opening, and the at least one heat dissipation opening penetrates the outer surface and the inner surface of the support member. According to the fan case of the second aspect of the patent application, wherein the heat dissipation port is two, one of the heat dissipation ports is opposite to the other heat dissipation port. The fan housing according to claim 1, wherein the outer periphery of the sealing member forms a ring flange, the ring flange is provided with a plurality of notches, and the opening of the supporting member is provided with a plurality of limits. Position bumps, each of the limit bumps being latched in each of the slots. The fan case according to claim 4, wherein the first surface of the closure member forms a convex portion, the convex portion is located at an outer periphery of the closure member, and the ring flange is formed on the protrusion unit. a fan housing as described in claim 1, 2 or 3, wherein The first surface of the closure is provided with a bearing seat. The fan housing according to claim 1, 2 or 3, wherein the joint of the support member is provided with an outer casing. A fan housing includes: a support member having an outer surface and an inner surface; the inner surface is formed around a passage, one end of the passage is provided with an opening portion, and the other end is provided with a joint portion, and the joint portion is combined with a joint portion An outer casing, the outer casing is coupled with a driving assembly capable of driving a rotor to rotate; and a closing member is coupled to the opening of the supporting member, the closing member having a first surface and a second surface opposite to the first surface a channel facing the support member; wherein the support member is provided with at least one heat dissipation opening, the at least one heat dissipation opening penetrating the outer surface and the inner surface. According to the fan case of claim 8, wherein the outer periphery of the closing member forms a ring flange, the ring flange is provided with a plurality of notches, and the opening of the supporting member is provided with a plurality of limiting protrusions. Each of the limiting bumps is latched in each of the slots. The fan shell according to claim 9, wherein the first surface of the closure member forms a convex portion, and the convex portion is located at an outer periphery of the closure member, and the annular flange is formed on the convex portion. unit. According to the fan case of claim 8, 9 or 10, wherein the heat dissipation port is two, one of the heat dissipation ports is opposite to the other heat dissipation port. A fan housing according to claim 8, 9 or 10, wherein the first surface of the closure is provided with a bearing seat. A fan housing according to claim 8, 9 or 10, wherein a joint of the support member is provided with a housing.