TWI404304B - Motor base - Google Patents

Abstract

A motor base comprises a base plate having a shaft tube on a side thereof. The base plate comprises at least one heat dissipating hole connected to the shaft tube. Based on the arrangement, better cooling mechanism of the shaft tube is provided via the at least one heat dissipating hole, preventing the shaft tube from high temperature or deformation.

Description

Motor base

The present invention relates to a motor base, and more particularly to a motor base having a heat dissipation hole.

Please refer to FIG. 1 , which is a patent of the invention of "Relief Fan" of the Republic of China No. I325469, which comprises a base 71, a fan wheel 72 and a coil device 73. The base 71 is provided with a hollow shaft tube 711; the fan wheel 72 has a rotating shaft 721, and the rotating shaft 721 is rotatably coupled to the shaft tube 711; the coil device 73 is coupled to the base 71 for driving the fan wheel 72 rotations.

The shaft tube 711 of the base 71 must be used to support a member such as the fan wheel 72 so that the fan wheel 72 can be rotated by the cooperation between the shaft 721 and the shaft tube 711; however, since the shaft tube 711 must The rotation shaft 721 is supported to rotate at a high speed, and the base 71 and the shaft tube 711 are generally formed by injection molding of a plastic material. Therefore, during the rotation of the fan wheel 72, the shaft tube 711 and the base 71 and the base tube 71 The portion where the shaft tubes 711 are combined with each other will easily cause heat accumulation or even deformation, and the fan wheel 72 cannot be stably rotated, thereby affecting the overall operation efficiency.

Please refer to FIG. 2, which is a patent for the "radiation structure base" of the Republic of China No. I318559, which includes a base 81 for coupling a motor, and the base 81 is provided with a shaft tube 811. The shaft tube 811 can be used to support a rotating shaft of a wheel; in addition, the base 81 forms a plurality of air inlet holes 812 at the periphery of the shaft tube 811, whereby the motor can drive the motor The fan wheel rotates and introduces an external airflow through the air inlet hole 812.

Although a plurality of air inlet holes 812 are formed in the periphery of the shaft tube 811 of the base 81, the air inlet hole 812 only has a function of introducing an external airflow into the interior of the base 81, and further, due to the air inlet hole The 812 is not adjacent to the shaft tube 811; therefore, when the shaft tube 811 is used to support the rotating shaft of the fan wheel for the high-speed rotation of the fan wheel, even if the base 81 has the air inlet hole 812 It is designed that the shaft tube 811 and the portion where the base 81 and the shaft tube 811 are coupled to each other are still prone to problems such as heat build-up and deformation.

Please refer to FIG. 3, which is the invention patent of "Motor Base Heat Dissipation Structure" of the Republic of China No. I318036, which has a base 91, and a shaft tube 911 is disposed in the central shaft seat of the base 91. The shaft tube 911 is provided with a wheel rotor 92. In addition, the base 91 is formed with a plurality of air inlet holes 912 around the shaft tube 911, and is disposed between the air inlet holes 912 and the shaft tube 911. There are a plurality of slots 913, and a fixing plate 93 is respectively disposed on the inner side of each of the slots 913. Thereby, when the base 91 is provided with a circuit board 94, the electronic heating element 941 of the circuit board 94 can pass through the slot 913. And being fixed to the fixing plate 93 to dissipate heat by the fixing plate 93.

The pedestal 91 is provided with a plurality of slots 913 between the air inlet 912 and the shaft 911. However, the main function of the slot 913 is to match the fixing plate 93 to the circuit board 94. The electronic heating element 941 dissipates heat, and the slot 913 is still not adjacent to the shaft tube 911, and the air inlet hole 912 is further away from the shaft tube 911; therefore, when the shaft tube 911 is used to support the fan wheel rotor 92 slot of the base 91 during high-speed rotation Similarly, the hole 913 cannot effectively avoid problems such as heat accumulation and deformation of the shaft tube 911 and the portion where the base 91 and the shaft tube 911 are coupled to each other.

In general, the above-mentioned various conventional motor bases cannot effectively solve the heat build-up caused by the shaft tubes 711, 811, 911 and the joints of the bases 71, 81, 91 and the shaft tubes 711, 811 and 911. And deformation and other shortcomings.

SUMMARY OF THE INVENTION It is an object of the present invention to improve the above-described disadvantages of the conventional fan frame and to provide a motor base that can directly dissipate heat from the shaft tube.

A motor base according to the present invention has a substrate, a side surface of the substrate is provided with a shaft tube, and the substrate is provided with at least one heat dissipation hole, and the at least one heat dissipation hole is adjacent to the shaft tube.

The above and other objects, features and advantages of the present invention will become more <RTIgt; As shown, the motor base of the preferred embodiment of the present invention includes at least a substrate 1 and a shaft tube 2. The shaft tube 2 is disposed at a position adjacent to a central surface of one side of the substrate 1. The substrate 1 and the shaft tube 2 can be designed to be separated and assembled, or can be integrally formed directly on the surface of the substrate 1. The shaft tube 2; as shown in the fifth embodiment, discloses that the substrate 1 of the present invention and the shaft tube 2 are integrally injection molded to improve manufacturing convenience.

The substrate 1 has a first surface 11 and a second surface 12, and the main technical feature of the motor base of the present invention is that the substrate 1 is provided. The heat dissipation holes 13 are connected to the heat dissipation holes 13 of the first surface 11 and the second surface 12, and the heat dissipation holes 13 are adjacent to the shaft tube 2, and the heat dissipation holes 13 have an inner hole wall 131. Moreover, the number of the heat dissipation holes 13 may be one or more. As shown in the embodiment shown in FIG. 6, the substrate 1 is provided with a plurality of pairs of heat dissipation holes 13, and each pair of heat dissipation holes 13 is connected to the shaft tube 2. The center axis is symmetrically disposed with respect to each other. For example, when the number of the heat dissipation holes 13 is four, two of the heat dissipation holes 13 are oppositely disposed, and the other two heat dissipation holes 13 are also disposed opposite to each other. Each of the heat dissipation holes 13 of the shaft tube 2 can provide a more comprehensive and uniform heat dissipation effect of the shaft tube 2.

The shaft tube 2 may be closed or open toward one end of the substrate 1. Preferably, one end of the shaft tube 2 is closed to provide functions such as dustproof or oil storage; the shaft tube 2 is away from the substrate. An opening 21 is provided at one end of the shaft so that a member such as a bearing can be assembled inside the shaft tube 2 via the opening 21; further, the shaft tube 2 has an outer peripheral wall 22 which can form a positioning flange 221 When the shaft tube 2 is coupled to a member such as a coil set, the positioning flange 221 can be utilized to provide a positioning function.

Moreover, in the manner that the heat dissipation hole 13 of the motor base of the present invention is adjacent to the shaft tube 2, it is preferable that a part of the inner hole wall 131 of the heat dissipation hole 13 is in a coplanar state with the outer peripheral wall 22 of the shaft tube 2, in other words, That is, the inner hole wall 131 and the outer peripheral wall 22 can be connected to each other to be the same surface.

Moreover, when the motor base of the present invention has a design of the positioning flange 221, the positioning flange 221 can be further utilized to strengthen the structural strength of the substrate 1 and improve the bonding stability between the substrate 1 and the shaft tube 2; At this time, the heat dissipation hole 13 is adjacent to the shaft tube 2, and the heat dissipation hole 13 is preferably axially penetrated through the positioning flange 221.

Referring to FIG. 7, a schematic diagram of a motor base according to a preferred embodiment of the present invention is actually applied to a motor structure. The outer peripheral wall 22 of the shaft tube 2 of the motor base of the present invention can be combined with a coil assembly 3. The coil assembly 3 can abut the positioning flange 221; further, the shaft tube 2 can be used to support a central shaft 41 of a rotor 4 to constitute a motor structure; thereby, the coil assembly 3 can be used to drive the rotor 4 Rotate.

Referring to FIG. 8, a schematic diagram of a motor base according to a preferred embodiment of the present invention is actually applied to a heat dissipating fan, wherein when the motor base of the present invention is combined with components such as the coil assembly 3 and the rotor 4, the motor structure is constructed. The rotor 4 can also be provided with a plurality of blades 42 as a fan wheel. In addition, the motor base of the present invention can be connected to an outer frame 5 by a plurality of connecting members 51 (such as ribs or vanes). The substrate 1 is located inside the outer frame 5 to form a frame; thereby, when the coil assembly 3 drives the rotor 4 to rotate, the airflow can be driven to dissipate heat for use in the cooling fan.

The motor base of the present invention can be applied to a motor structure and a heat dissipating fan. Since the motor shaft or the heat dissipating fan is in operation, the central shaft 41 and a bearing disposed in the shaft tube 2 rub against each other, and a high temperature is generated. The temperature can be lowered by the structural design of the heat dissipation hole 13〞 of the motor base of the present invention to improve the service life of the motor or the heat dissipation fan; more specifically, during the rotation of the rotor 4, the shaft tube 2 is caused. When heat is generated in a portion where the substrate 1 and the shaft tube 2 are coupled to each other, the heat accumulation can be dissipated to the external space via the heat dissipation holes 13 adjacent to the shaft tube 2 to ensure the shaft tube 2 and the substrate 1 and The temperature at the portion where the shaft tubes 2 are coupled to each other is not excessively high, and the deformation of the shaft tube 2 can be prevented. Moreover, when a part of the inner hole wall 131 matching the heat dissipation hole 13 and the outer peripheral wall 22 of the shaft tube 2 are in a coplanar state, the heat dissipation hole 13 can be brought closer to the shaft tube 2 to ensure the axis. The accumulated heat generated by the tube 2 can be dissipated to the external space more quickly, thereby providing a better heat dissipation effect; or, when the motor base of the present invention has the design of the positioning flange 221, the heat dissipation hole 13 is axially penetrated. The positioning flange 221 can also effectively prevent the temperature of the positioning flange 221 of the shaft tube 2 from being too high to prevent the shaft tube 2 from being twisted and deformed due to overheating of the positioning flange 221 .

It can be seen from the above that the motor base of the present invention can provide the good heat dissipation mechanism of the shaft tube 2 by using the heat dissipation hole 13 , and the motor base of the invention can be prevented from being generated when the motor base is used as a motor structure or a heat dissipation fan. Problems such as overheating or deformation can improve the overall performance.

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. . . Substrate

11. . . First surface

12. . . Second surface

13. . . Vents

131. . . Medial wall

2. . . Shaft tube

twenty one. . . Opening

twenty two. . . Outer peripheral wall

221. . . Positioning flange

3. . . Coil set

4. . . Rotor

41. . . The central axis

42. . . blade

5. . . Outer frame

51. . . Connector

[知知]

71. . . Pedestal

711. . . Shaft tube

72. . . Fan wheel

721. . . Rotating shaft

73. . . Coil device

81. . . Pedestal

811. . . Shaft tube

812. . . Air inlet

91. . . Pedestal

911. . . Shaft tube

912. . . Air inlet

913. . . Slot

92. . . Fan wheel rotor

93. . . Fixed plate

94. . . Circuit board

941. . . Electronic heating element

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

Figure 2: A cross-sectional view of a second conventional motor base.

Figure 3: A cross-sectional view of a combination of a third conventional motor base.

Figure 4 is an exploded perspective view of the motor base of the present invention.

Figure 5 is a cross-sectional view of the motor base of the present invention.

Figure 6: Top view of the motor base of the present invention.

Figure 7 is a schematic view showing the application of the motor base of the present invention to a motor.

Fig. 8 is a schematic view showing the application of the motor base of the present invention to a heat dissipation fan.

1. . . Substrate

11. . . First surface

12. . . Second surface

13. . . Vents

131. . . Medial wall

2. . . Shaft tube

twenty one. . . Opening

twenty two. . . Outer peripheral wall

221. . . Positioning flange

Claims (10)

A motor base having a substrate, a side surface of the substrate is provided with a shaft tube, the shaft tube has an outer peripheral wall, and a peripheral flange of the outer side of the shaft tube forms a positioning flange, and the substrate is provided with at least one heat dissipation hole. At least one heat dissipation hole is adjacent to the shaft tube and axially penetrates the positioning flange. The motor base according to claim 1, wherein the heat dissipation hole has an inner hole wall, and a part of the inner hole wall of the heat dissipation hole and the outer peripheral wall of the shaft tube are mutually connected to each other. The motor base according to claim 1 or 2, wherein the substrate is provided with a plurality of the heat dissipation holes, and each pair of heat dissipation holes are symmetrically disposed with respect to each other with respect to a central axis of the shaft tube. a motor base having a substrate, a side surface of the substrate is provided with a shaft tube, the substrate is provided with a plurality of the heat dissipation holes, each pair of heat dissipation holes are adjacent to the shaft tube and the central axis of the shaft tube is The benchmarks are symmetrically arranged. The motor base according to claim 4, wherein the shaft tube has an outer peripheral wall, the heat dissipation hole has an inner hole wall, and a part of the inner hole wall of the heat dissipation hole and the outer peripheral wall of the shaft tube are connected to each other. The same side. The motor base according to claim 4, wherein the shaft tube has an outer peripheral wall, and the outer peripheral wall of the shaft tube forms a positioning flange. The motor base according to claim 6, wherein the heat dissipation hole axially penetrates the positioning flange. The motor base according to claim 1, 2, 4, 5, 6 or 7 wherein the shaft tube is closed or open toward one end of the substrate. The motor base according to claim 1, 2, 4, 5, 6 or 7 of the patent application, wherein the shaft tube is detachably coupled to the substrate. The motor base according to claim 1, 2, 4, 5, 6 or 7 wherein the shaft tube is integrally formed on one side surface of the substrate.