Patent Application
20140112775
1. Field of the Invention
The present disclosure relates to a fan and a bearing structure thereof; in particular, to a bearing applicable on a cooling fan and a fan and a bearing thereof which are resistant to deformity due to stress.
2. Description of Related Art
Current usage of electronic products is widespread and popular. Driven by demands, the technological development of electronic products is advancing at a rapid pace, leading to increases in processing speeds, storage capacities and associated creation of heat during high speed operation of components in electronic products. Regarding computers for example, its central processing unit (CPU) creates large amount of heat. Moreover, the efficiency of the CPU is compromised when it is at a high temperature, leading to the shutdown of the computer or more seriously damages to the same. Additionally, in order to solve the problem of electromagnetic radiation, the computer is usually enclosed in a housing. Therefore, heat dissipation of central processing units and other heat creating components is an important task.
Typically, a cooling fan and a heat sink are disposed on a CPU for dissipating heat. One side of the heat sink has a plurality of heat fins for dissipating heat from the other side of the heat sink in contact with the CPU, such that the heat can be transmitted to the tips of the heat fins and dissipated via radiation in conjunction with convection driven by the cooling fan for rapid dissipation.
However, due to exposure of the cooling fan 1a to high temperature, thermal expansion causes the shaft barrel 11a to compress the bearing 112a such that the bearing 112a deforms to an extent that damages the pivoting between the bearing 112a and the shaft 113a, thereby rendering the cooling fan 1a unable to operate.
Hence, the present inventor believes the above mentioned disadvantages can be overcome, and through devoted research combined with application of theory, finally proposes the present disclosure which has a reasonable design and effectively improves upon the above mentioned disadvantages.
The object of the present disclosure is to provide a fan and a bearing structure thereof, which do not overly deform under stress.
A bearing structure provided by one embodiment of the present disclosure includes: a non-metallic column-shaped main body having a through hole, an inner wall surrounding the through hole and an outer wall surrounding the inner wall. The outer wall has at least two protruding blocks extending outwards and at least one groove. The groove is arranged between the two neighboring protruding blocks.
A bearing structure provided by another embodiment of the present disclosure includes: a non-metallic column-shaped main body having a through hole, an inner wall surrounding the through hole and an outer wall surrounding the inner wall. One end of the outer wall proximal to the through hole has at least two first protruding blocks extending outward, and at least one first groove, and the other end of the outer wall proximal to the through hole has at least two second protruding blocks extending outward, and at least one second groove. The first groove is arranged between two neighboring first protruding blocks, and the second groove is arranged between two neighboring second protruding blocks.
A fan provided by another embodiment of the present disclosure includes: a housing, a stator winding, a bearing structure and a rotation piece. The housing has a base and an accommodating space. The stator winding is disposed in the accommodating space and surrounds the base. The bearing structure is disposed in the base. The bearing structure includes a non-metallic column-shaped main body having a through hole, an inner wall surrounding the through hole and an outer wall surrounding the inner wall. The outer wall has at least two protruding blocks extending outwards and at least one groove. The groove is arranged between the two neighboring protruding blocks. The rotation piece is disposed in the accommodating space and has a rotation case, an axial shaft connected to the rotation case and a plurality of blades each connected to the rotation case.
A fan provided by another embodiment of the present disclosure includes: a housing, a stator winding, a bearing structure and a rotation piece. The housing has a base and an accommodating space. The stator winding is disposed in the accommodating space and surrounds the base. The bearing structure is disposed in the base. The bearing structure includes a non-metallic column-shaped main body having a through hole, an inner wall surrounding the through hole and an outer wall surrounding the inner wall. One end of the outer wall proximal to the through hole has at least two first protruding blocks extending outward, and at least one first groove, and the other end of the outer wall proximal to the through hole has at least two second protruding blocks extending outward, and at least one second groove. The first groove is arranged between two neighboring first protruding blocks, and the second groove is arranged between two neighboring second protruding blocks. The rotation piece is disposed in the accommodating space and has a rotation case, an axial shaft connected to the rotation case and a plurality of blades each connected to the rotation case.
In summary of the above, the present disclosure provides a fan and a bearing structure thereof, which, through the design of “an outer wall having at least two protruding blocks extending outward and at least one groove,” do not overly deform under stress.
In order to further the understanding regarding the present disclosure, the following embodiments are provided along with illustrations to facilitate the disclosure of the present disclosure.
The aforementioned illustrations and following detailed descriptions are exemplary for the purpose of further explaining the scope of the present disclosure. Other objectives and advantages related to the present disclosure will be illustrated in the subsequent descriptions and appended drawings.
First, please refer to
As shown in
As shown in
Specifically, when the fan is operating under high temperature, the base 31 gradually expands after heating due to thermal expansion. In other words, the bearing structure Z disposed in the fan T is compressed by the surrounding base 31. However, the bearing structure Z of the present disclosure has at least one groove 132, which serves as a reserved space for thermal expansion so that when the base 31 of the fan T compresses the bearing structure Z, the presence of the groove 132 reduces the force of compression experienced by the bearing structure Z and alleviates the stress and extent of deformation in the bearing structure Z. Additionally, the fan creates less noise and operates mores smoothly.
In practice, the material of the inner wall 12 and the outer wall 13 can be plastic. Specifically, the inner wall 12 and the outer wall 13 can be a plastic unit integrally formed as one body. However, the present disclosure is not limited thereto. For example the inner wall 12 can be made of plastic while the outer wall 13 can be made of metal or plastic mixed with metal.
Additionally, each of the two ends of each of the protruding blocks 131 has a first slanted guiding face 1311, and each of the two sides of each of the protruding blocks 131 has a second slanted guiding face 1312. Specifically, due to the angles of inclination (e.g. 45 degrees) of the first slanted guiding faces 1311 and the second slanted guiding faces 1312 with respect to the top surface of the protruding block 131, the assembly of the bearing structure Z is facilitated. It is worth noting that the quantity of the first slanted guiding face 1311 and the second slanted guiding face 1312 can be increased or decreased according to need. Additionally, the angles of inclination of the first slanted guiding face 1311 and the second slanted guiding face 1312 can be adjusted according to practical need and can be different.
First, please refer to
Comparing
Additionally, each of the two ends of each of the first protruding blocks 133 has a first slanted guiding face 1331, and each of the two sides of each of the first protruding blocks 133 has a second slanted guiding face 1332. Each of the two ends of each of the second protruding blocks 134 has a third slanted guiding face 1341, and each of the two sides of each of the second protruding blocks 134 has a fourth slanted guiding face 1342. It is worth noting that the quantity of the first slanted guiding face 1331, the second slanted guiding face 1332, the third slanted guiding face 1341 and the fourth slanted guiding face 1342 can be increased or decreased according to need. Additionally, the angles of inclination of the first slanted guiding face 1331, the second slanted guiding face 1332, the third slanted guiding face 1341 and the fourth slanted guiding face 1342 can be adjusted according to practical need and can be different.
In summary of the above, the present disclosure provides a fan and a bearing structure thereof, which, through the design of “an outer wall having at least two protruding blocks extending outward and at least one groove,” do not overly deform under stress.
The descriptions illustrated supra set forth simply the preferred embodiments of the present disclosure; however, the characteristics of the present disclosure are by no means restricted thereto. All changes, alternations, or modifications conveniently considered by those skilled in the art are deemed to be encompassed within the scope of the present disclosure delineated by the following claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 101220345 | Oct 2012 | TW | national |
