TWM590197U - Anti-pressing fan structure - Google Patents

Abstract

An anti-pressing fan structure includes: a fan frame with an upper shell and a lower shell, the upper shell having an air inlet; a support shaft, one end of which is inserted into the side of the lower shell, and the other end protrudes beyond the upper An oil bearing, with a bearing hole and sleeved outside the support shaft; a rotor set, sleeved and coupled to the outer edge of the oil bearing; a limit element, sleeved on the outer edge of the support shaft and close to the oil bearing An upper end; a thrust element, sleeved on the outer edge of the support shaft and close to the lower end of the oil-containing bearing; a certain sub-group, arranged on the lower shell and surrounding the outer edge of the oil-bearing bearing adjacently and not in contact with the oil-bearing bearing. With the above structure, the support shaft is used to support, to prevent the pressure of an external unit above the fan from being too high, the ambassador fan stops rotating or damaged, and the purpose of preventing the fan from being pressed is achieved.

Description

Anti-pressing fan structure

This creation is related to the field of fans, in particular to an anti-pressing fan structure.

The cooling fan is widely assembled in electronic products such as desktop computers, notebook computers, and tablet computers to generate heat dissipation functions. At present, the design of notebook computers, tablet computers and other products is designed with light and thin design. In order to meet the current trend of thinness and lightness, the current fan is designed to be a thin fan. However, the thin fan is susceptible to pressure from panel strikes or keyboard strikes, causing damage to the fan wheel or deformation of the flow channel to prevent the wind from flowing out. Therefore, how to solve the above-mentioned problems and deficiencies is that the creator of this case and the relevant manufacturers engaged in this industry are eager to study the direction of improvement.

In order to improve the above-mentioned problems, an object of the present invention is to provide an anti-pressing fan structure that prevents external units such as a keyboard or a casing or a panel from pressing the rotor group or the fan frame. Another purpose of this creation is to provide a support shaft to support a rotor group in a fan frame, the support shaft having a protruding section protruding the rotor group and the fan frame to receive an external unit, which has maintained an axial space Between the external unit and the rotor group, at least the rotor group is prevented from being pressed by the external unit. Another purpose of this creation is to provide a convex body provided with at least one support column on the outer surface of the fan frame in the flow channel of the fan frame to maintain an axial space between the outer unit and the fan frame by the convex body , At least to prevent the flow channel from being pressed by the external unit. To achieve the above purpose, the present invention provides an anti-pressing fan structure, which includes: a fan frame with an upper shell and a lower shell, the upper shell having an air inlet; a support shaft, one end of which is inserted into the lower shell Side, the other end protrudes beyond the upper shell; an oil-containing bearing has a bearing hole and is sleeved outside the support shaft; a rotor group is sleeved and coupled to the outer edge of the oil-bearing bearing; a limit element is sleeved on the The outer edge of the support shaft is close to the upper end of the oil-bearing bearing; a thrust element is sleeved on the outer edge of the support shaft and is close to the lower end of the oil-bearing bearing; and a certain subgroup is provided on the lower shell and surrounds the oil-bearing bearing Edge and not in contact with the oil bearing. With the above structure, when a downforce is generated, the two ends of the support shaft are in contact with the operation area of the electronic device and the inside of the casing, respectively, to prevent the downforce from being transmitted to the guide rotor group or the upper casing, causing the fan to stop rotating or deform and damage, thereby To achieve the purpose of preventing the fan from pressing.

The above-mentioned objects, structural and functional characteristics of this creation will be explained based on the preferred embodiments of the attached drawings. Please refer to Figure 1A, Figure 1B, Figure 1C and Figure 1D, which is an exploded schematic diagram, a combined schematic diagram, a cross-sectional schematic diagram and a partial schematic diagram of Figure 1C of the first embodiment of the creation. This creation mainly includes a fan frame 1 , A support shaft 2, an oil bearing 3, a rotor group 4, a limit element 5, a thrust element 6 and a certain sub-group 7: The fan frame 1 includes an upper shell 11 and a lower shell 12, the outer edge of the lower shell 12 extends a side wall 121 vertically, and surrounds to form an air outlet 14, an air inlet 13 is provided in the upper shell 11, the upper shell 11 and the The combination of the side walls 121 of the lower shell 12 together define a blade area 15 and a flow path area 16, the flow path area 16 is provided with at least one support column 17, and both ends of the support column 17 abut the upper shell 11 and the The lower shell 12 supports the flow channel area 16, the position of the air inlet 13 corresponds to the upper portion of the fan blade area 15, the lower shell 12 has a base 122, the support shaft 2 is disposed on the base 122, the base The base 122 has a lower end surface 1221, and the stator group 7 surrounds the outer edge of the base 122 adjacently. The support shaft 2 has a coupling section 21, a protruding section 22 and a protruding section 23, the coupling section 21 is disposed on the base 122, the protruding section 22 and the protruding section 23 face the upper shell 11, and The protruding section 23 protrudes from the air inlet 13, the combining section 21 has a contact surface 211, and the protruding section 23 has a contact surface 231. The oil-containing bearing 3 has a bearing hole 31 and is sleeved on the protruding section 22 of the support shaft 2. The rotor group 4 is sleeved and coupled to the outer edge of the oil bearing 3. The rotor group 4 includes a hub 41 sleeved and coupled to the outer edge of the oil bearing 3; a plurality of blades 42 respectively extend outward from the outer periphery of the hub 41; And a magnetic element 43, which is disposed on the inner periphery of the hub 41 and horizontally opposite to the stator group 7, the magnetic element 43 is, for example, a ring magnet. The limiting element 5 is sleeved on the protruding section 22 of the supporting shaft 2 and is close to the upper end of the oil bearing 3. The limiting element 5 is a C-shaped buckle or an O-shaped buckle. The thrust element 6 is sleeved on the protruding section 22 of the support shaft 2 and is close to the lower end of the oil bearing 3. The thrust element 6 has a first surface 61 and a second surface 62. The first surface 61 has A groove portion 611, the first surface 61 faces the oil bearing 3, and the second surface 62 faces the lower housing 12. The stator group 7 is disposed on one side of the lower case 12 and surrounds the outer edge of the oil-containing bearing 3 adjacently and does not contact the oil-containing bearing 3. The stator group 7 includes a circuit board 71; a stator body 72 is disposed on the The circuit board 71 is composed of a plurality of silicon steel sheets stacked in sequence. The stator body 72 has a shaft hole 721 and a plurality of poles 722; and a plurality of coils 73 are respectively disposed on the poles 722. In particular, the oil-containing bearing 3, the limiting element 5 and the thrust element 6 are disposed on the protruding section 22, and the support column 17 has two ends abutting the upper shell 11 and the lower shell 12, respectively An inner surface of the upper shell 11 and the lower shell 12 are respectively provided with an upper shell protrusion 18 and a lower shell protrusion 19 corresponding to the two ends of the support column 17, the upper shell protrusion 18 has a top The contact surface 181 is aligned with the contact surface 231 of the protruding section 23 of the support shaft 2, the lower end surface 1221 of the base is provided with the lower shell convex body 19, the contact surface 211 of the coupling section 21 and the lower end surface 1221 of the base In contact with the lower shell protrusions 19, the lower shell protrusions 19 have a bottom connection surface 191, and the bottom connection surfaces 191 are aligned with each other. Please refer to FIG. 5 together, which is a schematic cross-sectional view of the creation applied to an electronic device, and supplemented by referring to FIGS. 1A to 1D. The fan in this case is provided in an electronic device to help heat dissipation of internal heating elements. The diagram of the device in this case represents a laptop, but it is not limited to this, and may also be a tablet computer, a mobile phone, or a handheld game console, etc. An external unit 8a in this embodiment is, for example, a keyboard, but in other embodiments, for example, a touch panel or touch The board or casing is located above the fan frame 10, the abutment surface 231 of the protruding section 23 and the top surface 181 of the upper shell protrusion 18 receive an external unit 8a, and form a first axial space S1 in Between the external unit 8 and the fan frame 1, when the external unit 8a of the electronic device is used to generate downforce, the flow channel area 16 and the support shaft 2 are supported through the support column 17 to support the fan area 15 and retain the axial direction Space S, and the first axial space S1 provides the micro-deformation space where the external unit 8a is pressed for a short time to prevent the external unit 8a from being pressed against the oil bearing 3, the hub 41 and the upper shell 11 to ensure that the hub 41 rotates The rotation will not stop due to pressure and the upper shell 11 will not deform to interfere with the rotation of the blade 42. Furthermore, the lower shell protrusions 19 abut another external unit 8b located under the fan frame 1 in this embodiment, for example, a chassis, but in other embodiments, for example, a touch panel or a touch pad or a keyboard, and in A second axial space S2 is formed between the other external unit 8b and the lower casing 12 of the fan frame 1. In this way, another external unit 8b is prevented from compressing the blade area 15 or the flow path area 16 in the fan frame 1, preventing the hub 41 from being compressed and unable to operate and/or preventing the flow path area 16 from being compressed and deformed In addition, the groove portion 611 on the first surface 61 of the thrust element 6, when the oil-containing bearing 3 rotates, the groove portion 611 will generate a fluid thrust, so that the oil-containing bearing 3 and the thrust element 6 respectively have a The clearance prevents the oil-bearing bearing 3 from shaking along the axial direction of the support shaft 2 when it rotates, which affects the stability and contact wear during rotation. Please refer to FIG. 2A and FIG. 2B, which are cross-sectional schematic diagrams and partial schematic diagrams of the second embodiment of the creation, supplemented by referring to FIGS. 1A to 1D, this embodiment is substantially the same as the first embodiment, so the same The main difference is that another thrust element 6a is provided between the oil bearing 3 and the limiting element 5, the first face 61a of the thrust element 6a faces the oil bearing 3, and the second face 62a Towards the limiting element 5, the first surface 61a has a groove portion 611a. When the oil-bearing bearing 3 rotates, the groove portions 611 and 611a will generate a fluid thrust, so that the oil-bearing bearing 3 has a gap with the thrust elements 6 and 6a respectively to prevent the oil-bearing bearing 3 from shaking in the axial direction of the support shaft 2 when rotating It affects the stability and contact wear during rotation, and achieves the effect of two-way stability. Please refer to FIG. 3A and FIG. 3B, which are cross-sectional schematic diagrams and partial schematic diagrams of the third embodiment of the creation, supplemented by referring to FIGS. 1A to 1D, this embodiment is substantially the same as the first embodiment, so it is the same The main difference is that the supporting column 17 of this embodiment is directly coupled to the lower case 12. The lower case 12 has a shaft barrel 123, and the stator group 7 surrounds the outer edge of the shaft barrel 123 adjacently, thereby eliminating the need了基地122。 The base 122. In addition, although only one thrust element 6 is used in the diagram of the third embodiment, it can actually be applied in conjunction with the technical features of the second embodiment, and another thrust is provided between the oil-containing bearing 3 and the limiting element 5 Element 6a (please refer to Figure 2A and Figure 2B) to achieve the effect of bidirectional stability. Figure 4 is a partial schematic diagram of the fourth embodiment of the creation, supplemented by referring to Figures 1A to 1D, this embodiment is substantially the same as the first embodiment, so the same parts are not repeated, and the main difference lies in this implementation For example, the upper end surface 32 of the oil-bearing bearing 3 is provided with a groove portion 321 and the lower end surface 33 is provided with a groove portion 331, which generates a fluid thrust when the oil-bearing bearing 3 rotates, allowing the oil-bearing bearing 3 to directly contact the thrust element 6 and the base 122 maintains a gap, thereby eliminating the thrust element 6. In addition, although the fan frame 1 used in the diagram of the fourth embodiment has a base 122, it can actually be applied with the technical features of the third embodiment without the base 122. In summary, this creation has the following advantages: 1. Prevent the external unit from pressing the flow channel in the rotor group and/or fan frame: 2. Maintain the first and second axial spaces between the external unit and the hub to at least prevent the rotor set from being compressed by the external unit; 3. Maintain the first and second axial spaces between the external unit and the lower frame of the fan frame to prevent the flow channel from being compressed by the external unit. The above has made a detailed description of this creation, but the above is only one of the preferred embodiments of this creation, and it should not limit the scope of this creation. That is, any changes and modifications made in accordance with the scope of this creative application should still fall within the scope of this patent.

1‧‧‧Fan frame 11‧‧‧Upper shell 12‧‧‧Lower shell 121‧‧‧Sidewall 122‧‧‧Dock 1221‧‧‧Lower end of base 123‧‧‧shaft barrel 13‧‧‧Air inlet 14‧‧‧Outlet 15‧‧‧ Fan blade area 16‧‧‧flow area 17‧‧‧support column 18‧‧‧Upper shell convex 181‧‧‧top junction 19‧‧‧Lower shell convex 191‧‧‧Bottom junction 2‧‧‧Support shaft 21‧‧‧Combined section 211‧‧‧ contact surface 22‧‧‧Convex section 23‧‧‧ protruding section 231‧‧‧ abutment surface 3‧‧‧Oil bearing 31‧‧‧Bearing hole 32‧‧‧upper face 321‧‧‧Notch 33‧‧‧lower end 331‧‧‧Notch 4‧‧‧Rotor set 41‧‧‧Wheel 42‧‧‧Blade 43‧‧‧Magnetic components 5‧‧‧Limiting components 6, 6a‧‧‧thrust components 61, 61a 611, 611a‧‧‧Notch 62, 62a‧‧‧Second side 7‧‧‧Stator 71‧‧‧ circuit board 72‧‧‧Stator body 721‧‧‧shaft hole 722‧‧‧pole 73‧‧‧coil 8a, 8b‧‧‧External unit S1‧‧‧ First axial space S2‧‧‧Second axial space

Figure 1A is an exploded schematic view of the first embodiment of the creation; FIG. 1B is a combined schematic diagram of the first embodiment of the creation; Figure 1C is a schematic cross-sectional view of the first embodiment of the creation; Figure 1D is a partial schematic view of Figure 1C; Figure 2A is a schematic cross-sectional view of a second embodiment of the creation; Figure 2B is a partial schematic diagram of the second embodiment of the creation; Figure 3A is a schematic cross-sectional view of a third embodiment of the creation; Figure 3B is a partial schematic view of the third embodiment of the creation; Figure 4 is a partial schematic view of the fourth embodiment of the creation; FIG. 5 is a schematic cross-sectional view of the creation applied to an electronic device.

1221‧‧‧Lower end of base

17‧‧‧support column

18‧‧‧Upper shell convex

181‧‧‧top junction

19‧‧‧Lower shell convex

191‧‧‧Bottom junction

211‧‧‧ contact surface

231‧‧‧ abutment surface

3‧‧‧Oil bearing

41‧‧‧Wheel

42‧‧‧Blade

8a, 8b‧‧‧External unit

S1‧‧‧ First axial space

S2‧‧‧Second axial space

Claims (14)

An anti-pressing fan structure, including: A fan frame has an upper shell and a lower shell, and the upper shell has an air inlet; A support shaft, one end of which is inserted into one side of the aforementioned lower shell, and the other end projects beyond the upper shell; An oil bearing, with a bearing hole and sleeved outside the support shaft; A rotor group, sleeved and combined with the outer edge of the oil bearing; A limit element sleeved on the outer edge of the support shaft and close to the upper end of the oil bearing; A thrust element sleeved on the outer edge of the support shaft and close to the lower end of the oil bearing; and A certain sub-group is disposed on the lower shell and surrounds the outer edge of the oil-containing bearing adjacently and does not contact the oil-containing bearing. The anti-pressing fan structure as described in item 1 of the patent application scope, wherein the support shaft has a coupling section, a protruding section and a protruding section, the coupling section is provided on the lower case, the protruding section and the supporting end Facing the upper shell, and the protruding section protrudes from the air inlet, the oil bearing, the limiting element and the thrust element are disposed on the protruding section, and the protruding section has an abutment surface. The anti-pressing fan structure as described in item 2 of the patent application scope, wherein the lower case has a base, the coupling section of the support shaft is disposed on the base, and the stator group surrounds the outer edge of the base adjacently, the The base has a lower end surface of the base. The anti-pressing fan structure as described in item 3 of the patent application scope, wherein the outer edge of the lower shell extends a side wall vertically and surrounds to form an air outlet, and the combination of the side walls of the lower shell jointly define a fan blade area and a first-rate road area, The flow channel area is provided with at least one support column, the support column has an inner surface at both ends abutting the upper shell and the lower shell, and an outer shell protrusion is respectively provided on an outer surface of the upper shell and the lower shell And the lower shell convex body corresponds to both ends of the support column, the upper shell convex body has a contact surface aligned with the protruding section of the support shaft, the abutting surface of the protruding section and the upper shell protrusion A top contact surface of the body receives an external unit and forms a first axial space between the external unit and the fan frame, the lower shell protrusion has a bottom contact surface, the lower end surface of the base and the bottom contact surface Accept another external unit and form a second axial space between the other external unit and the fan frame. The anti-pressing fan structure as described in item 4 of the patent application scope, wherein the lower shell convex body is provided on the lower end surface of the base, a contact surface of the coupling section and the lower end surface of the base are in contact with the lower shell convex body . The anti-pressing fan structure as described in item 1 of the patent application, wherein the thrust element has a first surface and a second surface, the first mask has a groove portion, the first surface faces the oil bearing, The second surface faces the lower shell. The anti-pressing fan structure as described in item 5 of the patent application scope, wherein another thrust element is provided between the oil bearing and the limiting element, the first face of the thrust element faces the oil bearing, and the second face Towards the limit element. The anti-pressing fan structure as described in item 1 of the patent application scope, wherein the limiting element is a C-shaped buckle or an O-shaped buckle. An anti-pressing fan structure, including: A fan frame has an upper shell and a lower shell, and the upper shell has an air inlet; A support shaft, one end of which is inserted into one side of the aforementioned lower shell, and the other end protrudes beyond the upper shell; An oil-containing bearing, which has a bearing hole and is sleeved outside the support shaft, and the upper end surface and the lower end surface of the oil-containing bearing respectively have a groove portion; A rotor group, sleeved and combined with the outer edge of the oil bearing; A limit element sleeved on the outer edge of the support shaft and close to the upper end of the oil bearing; and A certain sub-group is disposed on the lower shell and surrounds the outer edge of the oil-containing bearing adjacently and does not contact the oil-containing bearing. The anti-pressing fan structure as described in item 9 of the patent application scope, wherein the support shaft has a coupling section, a protruding section and a protruding section, the coupling section is provided on the lower shell, the protruding section and the supporting end Facing the upper shell, and the protruding section protrudes from the air inlet, the oil bearing, the limiting element and the thrust element are disposed on the protruding section, and the protruding section has an abutment surface. The anti-pressing fan structure as described in item 10 of the patent application scope, wherein the lower case has a base, the coupling section of the support shaft is disposed on the base, and the stator group is adjacent to the outer edge of the base, the The base has a lower end surface of the base. The anti-pressing fan structure as described in item 11 of the patent application scope, wherein the outer edge of the lower shell extends a side wall vertically and surrounds to form an air outlet, and the combination of the side walls of the lower shell jointly define a fan blade area and a first-rate road area, The flow channel area is provided with at least one support column, the support column has an inner surface at both ends abutting the upper shell and the lower shell, and an outer shell protrusion is respectively provided on an outer surface of the upper shell and the lower shell And the lower shell convex body corresponds to both ends of the support column, the upper shell convex body has a contact surface aligned with the protruding section of the support shaft, the abutting surface of the protruding section and the upper shell protrusion A top contact surface of the body receives an external unit and forms a first axial space between the external unit and the fan frame, the lower shell protrusion has a bottom contact surface, the lower end surface of the base and the bottom contact surface Accept another external unit and form a second axial space between the other external unit and the fan frame. The anti-pressing fan structure as described in item 12 of the patent application range, wherein the lower shell convex body is provided on the lower end surface of the base, a contact surface of the coupling section and the lower end surface of the base are in contact with the lower shell convex body . The anti-pressing fan structure as described in item 9 of the patent application scope, wherein the limiting element is a C-shaped buckle or an O-shaped buckle.

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