TWM449437U - With the support and voucher oil function of the inverted type heat dissipation fan - Google Patents

Description

Axial inverted cooling fan with support and oil retention

This creation relates to a cooling fan, in particular to an innovative structural design of an axially inverted cooling fan that has both support and oil retention functions.

According to the heat dissipation fan, it is widely used in electronic products such as desktop computers, notebook computers, and tablet computers to generate heat dissipation functions.

With the current design of notebook computers, tablet PCs, etc., which are designed with lightness and thinness in mind, the space in which the cooling fan is installed in the structure of the electronic product is limited, and between the cooling fan and the keyboard or panel of the electronic product. The distance is greatly reduced. As a result, when the user taps or touches the keyboard, the panel, etc., it is often directly pressed to the cooling fan structure, thereby causing the cooling fan to be blocked or even damaged, thereby losing serious problems of heat dissipation; In this case, the relevant industry has developed some improved cooling fan structures. In response to this, the typical structure of the company is disclosed in the new patent case of the "heat-dissipating fan" of the Republic of China Patent No. M417596. The main purpose is that the free end of the fixed column provided in the center of the stator protrudes from the top surface of the top plate of the fan wheel; thereby, the free end of the fixed column can be used to resist the casing, keyboard or panel of the product. Pressing the fan wheel and fan blades of the cooling fan to prevent the cooling fan from being damaged by pressure; In the practical application, it is found that the following problems and drawbacks still exist: in the above-mentioned conventional design of the cooling fan, the fan wheel is sleeved on the fixed column of the stator by a single bearing set, and then set at the free end of the fixed column. a limit member (such as a C-shaped buckle) to prevent the fan wheel from continuously shifting upward; however, this Knowing that the structural type still lacks the perfect oil-containing mechanism considerations, the coating lubricant is vertically between the bearing and the fixed column, and will still gradually drain along the fixed column during the operation of the fan wheel, which is difficult to maintain oil and has a service life. Shortened problems and shortcomings.

Therefore, in view of the problems existing in the above-mentioned conventional cooling fan structure, how to develop an innovative structure with more ideal and practicality, the relevant industry must further strive to develop the goal and direction of breakthrough.

In view of this, the creator has been engaged in the manufacturing development and design experience of related products for many years. After the detailed design and careful evaluation of the above objectives, the creator will have a practical and practical creation.

The main purpose of this creation is to provide a shaft-centered anti-cooling fan with support and oil-retaining functions. The problem to be solved is to develop a new type of shaft-centered anti-heating that is more ideal and practical. The structure of the fan is improved and innovative. The technical feature of the solution to the problem lies in the fact that the axis-reverse cooling fan includes: a base, including a back surface and a mounting surface, and a circuit board is provided on the mounting surface; The sub-group comprises a silicon steel sheet, a coil and a central ring seat, wherein the central ring seat is convexly disposed on the pedestal mounting surface, the silicon steel sheet and the coil are disposed on the outer circumference of the central ring seat; and a rotor blade group includes a top wall a wheel housing having a ring wall, a spacer ring disposed on an outer circumference of the wheel housing ring wall, a shaft cylinder protruding downwardly from a center of the top wall of the wheel housing, and a magnet ring disposed inside the ring wall of the wheel housing, the shaft cylinder is convex downward Stretched in the central ring seat, the magnet ring spacing corresponds to the outer periphery of the coil; a perforation is opened in the center of the top wall of the wheel housing; and an inverted axis is coupled to the stator group in an upwardly convex configuration, the inverted axis Including knot End and a protruding end, the mating end positioned in the center position of the center of the ring carrier, the protruding end of the wheel toward the housing top wall protruding direction; piercing a reduced diameter section, inverted by AXIS The protruding end is formed in a reduced diameter shape and is formed upwardly through the perforation protruding from the top wall of the wheel housing; an annular shoulder is formed by the convex end and the reduced diameter of the inverted shaft The difference between the outer diameter difference patterns is formed; an oil-impregnated bearing is set in the shaft cylinder of the wheel housing, and the oil bearing is in a pivotal relationship with the protruding end of the inverted shaft; The gasket is disposed between the oil-impregnated bearing and the top wall of the wheel housing in a sandwiched type group, and the wear-resistant gasket is in the form of a ring body and includes a central through hole, and the central through hole can be used for reducing diameter The section passes through, and the bottom of the wear-resistant gasket adjacent to the central through-hole is pressed downward against the annular shoulder; thereby creating a unique design, the creation can be utilized in the prior art. The segment generates an upwardly supporting structural reinforcing function to prevent the rotor blade group from being easily damaged by the pressure, and the annular shoulder of the inverted shaft is matched with the wear-resistant gasket to form an oil-blocking effect. An oil retaining function that prevents oil from leaking upwards, thereby causing the shaft to be inverted Fan and reach practical and progressive support function of the oil reservoir.

Please refer to Figures 1, 2 and 3 for a preferred embodiment of the axially-disclosed cooling fan with support and oil retention functions. However, these embodiments are for illustrative purposes only, and are used in patent applications. Not subject to this structure. The shaft-inverted heat-dissipating fan A includes the following structure: a base 10 including a back surface 11 and a mounting surface 12, the mounting surface 12 is provided with a circuit board 13; a certain sub-group 20, including a steel sheet The film 21, the coil 22 and a central ring seat 23 are formed. The central ring seat 23 is convexly disposed on the mounting surface 12 of the base 10, and the steel sheet 21 and the coil 22 are disposed on the outer circumference of the central ring seat 23; a rotor fan The leaf set 30 includes a wheel shell 31 having a top wall 313 and a ring wall 315, a blade 32 provided on the outer circumference of the ring wall 315 of the wheel housing 31, and a shaft cylinder 33 protruding downward from the center of the top wall 313 of the wheel housing 31. a magnet ring 34 disposed on the inner side of the ring wall 315 of the wheel housing 31; wherein the shaft cylinder 33 is downwardly convexly placed In the central ring seat 23 of the sub-group 20, the magnet ring 34 is spaced apart from the periphery of the coil 22 of the stator assembly 20; a perforation 40 is formed in the center of the top wall 313 of the wheel housing 31 of the rotor blade group 30; an inverted shaft The core 50 is coupled to the structure of the stator assembly 20 in an upwardly convex configuration. The inverted shaft 50 includes a joint end 51 and a convex end 52. The joint end 51 is positioned at the central ring seat of the stator assembly 20. 23, the convex end 52 protrudes toward the top wall 313 of the wheel shell 31 of the rotor blade group 30; a reduced diameter passage portion 53 is formed by the convex end 52 of the inverted shaft 50 The radial shape passes upwardly through the protrusion formed above the perforation 40 provided by the top wall 313 of the wheel housing 31; an annular shoulder 54 is formed by the convex end 52 and the reduced diameter passage area of the inverted shaft 50 The outer diameter difference pattern between the segments 53 is relatively defined; an oil bearing 60 is set in the barrel 33 of the wheel housing 31, and the oil bearing 60 is between the projecting end 52 of the inverted shaft 50 In a pivotal grouping relationship (that is, a state in which the oil-impregnated bearing 60 can be rotated around the outer circumference of the inverted shaft 50); a wear-resistant gasket 70 is set in a sandwiched type group The oil-impregnated bearing 60 is disposed between the oil-impregnated bearing 60 and the top wall 313 of the wheel housing 31. The wear-resistant gasket 70 is in the form of a ring-shaped body and includes a central through-hole 71 that can pass through the reduced-diameter passage section 53. The portion of the bottom of the wear-resistant gasket 70 adjacent to the central through-hole 71 is downwardly abutted against the annular shoulder portion 54. With the above structural design, as shown in FIGS. 1 and 3, the axial-centered anti-discharge cooling fan A In use, the 缩 can be used to reduce the diameter of the protruding end 52 of the inverted shaft 50 to produce an upwardly supporting structural reinforcement; as shown in FIG. 3, the axially opposite cooling fan A is disclosed. There is a top plate 80, which may be a control panel portion of the notebook computer. When the top plate 80 is pressed (as indicated by the arrow L1) to be in a downwardly recessed state, because the reduced diameter passes through the section 53 Is protruding from the top wall 313 of the wheel housing 31 The type can support the top plate 80 so that the top plate 80 does not continue to sink, so that the operating state of the rotor blade group 30 is protected from being affected, thereby preventing the rotor blade group 30 from being easily pressed. And the protective function of the damage; on the other hand, the creation and the annular shoulder 54 of the inverted shaft 50 can be combined with the wear pad 70 to form an oil-blocking effect, as shown in FIG. 3, The lubricating oil of the oil-impregnated bearing 60 is shown in the path state of the upward flow of the oil-impregnated bearing 60 along the inverted axis 50 (as indicated by the arrow L2), and the technique of the wear-resistant gasket 70 being stacked on the annular shoulder 54 The feature is that the upward flowing lubricating oil cannot continue upward, but the outer side is turned along the wear-resistant gasket 70 and the top surface of the oil-impregnated bearing 60 and then folded back to the flow state, thereby preventing the upward leakage of the lubricating oil. Oil function and effect.

As shown in the second and third figures, the inverted shaft 50 having the convex end 52 and the reduced diameter passage section 53 may be provided with a ring groove 55 at a height position, and the ring groove The set height of 55 corresponds to the height position of the bottom end of the oil-impregnated bearing 60. The annular concave shape of the ring groove 55 can also produce an appropriate oil-containing gain effect, which further enhances the oil retention effect claimed by the present invention.

In addition, the annular shoulder 54 formed by the oppositely defined outer diameter between the convex end 52 of the inverted shaft 50 and the reduced diameter passage section 53 can be set as a transverse plane type. State (as shown in Figures 1 to 3). Alternatively, the annular shoulder portion 54B as shown in Fig. 4 is formed in a tapered bevel type. Alternatively, or as shown in Fig. 5, the annular shoulder portion 54C is formed in a stepped shape. These annular shoulder embodiments are all applicable in specific applications, but their use is slightly different, as shown in Figures 1 to 3, the contact area between the annular shoulder 54 and the oil-impregnated bearing 60 is relatively small. Large, so the oil resistance effect is better, but the wear and resistance are relatively large; the annular shoulder 54B with a tapered bevel shape shown in Fig. 4 is in a loop-like contact, and the oil-blocking effect is poor, and once worn, it will form a larger outer surface. The leaking slit; and the annular shoulder 54C of the stepped surface shape shown in Fig. 5 has a moderate oil-blocking effect, but after wear, the oil-repellent effect can be extended by the next step surface.

Further, as shown in FIGS. 1 to 3, the bottom end position of the barrel 33 of the wheel housing 31 is as shown in FIGS. A limit ring body 56 is disposed at a position, and the limit ring body 56 abuts against the oil-impregnated bearing 60 to generate an auxiliary support limit for the oil-impregnated bearing 60.

As shown in the second and third embodiments, the central ring seat 23 of the stator assembly 20 is located at a position corresponding to the shaft cylinder 33 of the rotor blade group 30, and an elastic retaining ring 90 and a limiting slot 91 are provided. The end edge of the elastic retaining ring 90 extends into the limiting slot 91 and maintains an axial distance from the limiting slot 91, thereby providing an anti-disengagement effect on the rotor blade set 30.

Efficacy description: The facts that enhance the effectiveness of this creation are as follows:

The "Axis-inverted cooling fan with support and oil-retaining function" disclosed in the present invention mainly has a through hole in the center of the top wall of the wheel housing, and a protruding end portion of the inverted shaft is provided with a reduced diameter through-out section. Forming the annular shoulder above the top wall of the wheel housing and the opposite axis, and assembling the wear-resistant gasket between the oil-impregnated bearing and the top wall of the wheel housing, thereby creating an innovative unique structural combination design. According to the conventional structure proposed in the prior art, the crucible can utilize the reduced diameter passage section to generate an upwardly supporting structural reinforcement function to achieve a protection function for preventing the rotor blade group from being easily damaged by pressure, and The annular shoulder provided by the inverted shaft is matched with the wear-resistant gasket to form an oil-blocking function, so as to achieve the oil retaining function for preventing the lubricating oil from leaking upward, thereby making the axial-reverse cooling fan reach both support and Practical advancement of oil retention function.

The disclosures of the above embodiments are used to specifically explain the present creation, and although the descriptions are made through specific terms, the scope of patents of the novel creation cannot be limited thereby; those skilled in the art can understand the spirit of the creation. Changes and modifications are made to the equivalent purpose, and such changes and modifications are to be included in the scope defined by the scope of the patent application as described later.

A‧‧‧Axis reverse cooling fan

10‧‧‧ Pedestal

11‧‧‧ Back

12‧‧‧Installation

13‧‧‧Circuit board

20‧‧‧stator group

21‧‧‧矽Steel sheet

22‧‧‧ coil

23‧‧‧Central ring seat

30‧‧‧Rotor fan blade group

313‧‧‧ top wall

315‧‧‧Circle

31‧‧‧ Wheel shell

32‧‧‧ blades

33‧‧‧ shaft tube

34‧‧‧ magnet ring

40‧‧‧Perforation

50‧‧‧Reverse shaft

51‧‧‧Binding end

52‧‧‧ protruding end

53‧‧‧Reducing diameter through section

54, 54B, 54C‧‧‧ ring shoulder

55‧‧‧ ring groove

56‧‧‧Limited ring body

60‧‧‧ oil bearing

70‧‧‧Abrasive gasket

71‧‧‧Central through hole

80‧‧‧ top board

90‧‧‧Flexible holding ring

91‧‧‧Limited slot

Figure 1 is a cross-sectional view showing the structure of a preferred embodiment of the present invention.

Figure 2: An exploded view of the partial structure of the preferred embodiment of the present invention.

Figure 3: Schematic diagram of the state of use of the support and oil retention functions of this creation.

Figure 4: Another embodiment of the annular shoulder pattern of the present invention.

Figure 5: A further embodiment of the annular shoulder pattern of the present invention.

10‧‧‧ Pedestal

11‧‧‧ Back

12‧‧‧Installation

13‧‧‧Circuit board

20‧‧‧stator group

21‧‧‧矽Steel sheet

22‧‧‧ coil

23‧‧‧Central ring seat

31‧‧‧ Wheel shell

313‧‧‧ top wall

33‧‧‧ shaft tube

40‧‧‧Perforation

50‧‧‧Reverse shaft

51‧‧‧Binding end

52‧‧‧ protruding end

53‧‧‧Reducing diameter through section

54‧‧‧Ring shoulder

55‧‧‧ ring groove

56‧‧‧Limited ring body

60‧‧‧ oil bearing

70‧‧‧Abrasive gasket

71‧‧‧Central through hole

80‧‧‧ top board

90‧‧‧Flexible holding ring

91‧‧‧Limited slot

Claims (7)

A shaft center reverse type cooling fan with support and oil retaining function, the shaft center reverse type cooling fan comprises: a base comprising a back surface and a mounting surface, the mounting surface is provided with a circuit board; a certain subgroup The utility model comprises a silicon steel sheet, a coil and a central ring seat, wherein the central ring seat is convexly disposed on the pedestal mounting surface, the silicon steel sheet and the coil are arranged at a periphery of the central ring seat; and a rotor blade group includes a top a wheel shell of the wall and the ring wall, a spacer ring disposed on the outer circumference of the wheel housing ring wall, a shaft cylinder protruding downwardly from the center of the top wall of the wheel housing, and a magnet ring disposed inside the ring wall of the wheel housing; wherein the shaft barrel a downwardly projecting projection in a central ring seat of the stator set, the magnet ring being spaced apart from the outer circumference of the coil of the stator set; a perforation opening in the center of the top wall of the wheel shell of the rotor blade group; and an inverted axis, Positioned on the stator assembly in an upwardly convex configuration, the inverted shaft includes a joint end and a convex end, the joint end is located at a center position of the central ring seat of the stator group, and the protruding end faces the rotor The fan blade group has a convex wall in the direction of the top wall of the wheel shell a reduced diameter passage section, wherein the convex end of the inverted shaft is set to a reduced diameter type and upwardly passes through a hole formed above the perforation provided on the top wall of the wheel housing; an annular shoulder is used Formed by the outer diameter difference between the convex end of the inverted shaft and the diameter-reducing section; an oil-impregnated bearing set in the shaft of the wheel housing, and the oil bearing and the inverted type The protruding ends of the axial center are in a pivotal relationship; a wear-resistant gasket is disposed between the oil-impregnated bearing and the top wall of the wheel housing in a sandwiched type group, and the wear-resistant gasket is in a ring-shaped shape. The utility model comprises a central through hole, wherein the central through hole can pass through the reduced diameter passage section, and the bottom part of the wear resistant gasket adjacent to the central through hole abuts against the annular shoulder. Thereby, the 缩 can use the reduced diameter through-out section to generate an upwardly supporting structural reinforcement function to achieve a protection function for preventing the rotor blade group from being easily damaged by pressure, and the annular shoulder provided by the inverted axial center The part is matched with the wear-resistant gasket to form an oil-blocking function, so as to achieve the oil-preserving function of preventing the lubricating oil from leaking upward. The axial center reverse type cooling fan with support and oil retaining function according to claim 1 of the patent application, wherein the inverted shaft having the protruding end and the reduced diameter passage section is disposed at a height position There is a ring groove, and the set height of the ring groove corresponds to the height position of the bottom end of the oil bearing. The axial center reverse type cooling fan with support and oil retaining function according to claim 1 or 2, wherein the difference in outer diameter between the protruding end portion and the reduced diameter passage portion of the inverted shaft The annular shoulder formed by the relative definition of the type is set to a transverse plane type. The axial center reverse type cooling fan with support and oil retaining function according to claim 1 or 2, wherein the difference in outer diameter between the protruding end portion and the reduced diameter passage portion of the inverted shaft The annular shoulder formed by the relative definition of the type is formed into a cone-shaped slope type. The axial center reverse type cooling fan with support and oil retaining function according to claim 1 or 2, wherein the difference in outer diameter between the protruding end portion and the reduced diameter passage portion of the inverted shaft The annular shoulder formed by the relative definition of the type is set to a stepped surface type. A shaft-inverted cooling fan having a supporting and oil-retaining function according to claim 1 of the patent application, wherein the inner end of the shaft of the wheel housing The set position has a limit ring body, and the limit ring system abuts against the oil bearing to generate an auxiliary support limit for the oil bearing. The axial center reverse type cooling fan with support and oil retaining function according to claim 1 , wherein the central ring seat of the stator set is corresponding to the shaft barrel of the rotor blade group and is provided with an elastic buckle ring And a limiting slot, the edge of the elastic retaining ring extends into the limiting slot and maintains an axial distance from the limiting slot.