CN204511971U - fan impeller - Google Patents

Abstract

The utility model provides a fan impeller, which includes a plurality of blade assemblies, each of which includes an integrally formed metal ring frame and a plurality of metal blades, one end of each metal blade is connected to the corresponding metal ring frame, and the metal blades in each blade assembly are radially arranged around the corresponding metal ring frame; wherein the metal ring frames are stacked and the metal blades are radially arranged, and the width of at least one point of each metal blade is not less than the spacing between the metal blade and another adjacent metal blade along the circumferential direction of the fan impeller. In this way, metal blades with larger widths can be densely arranged.

Description

fan impeller

technical field

The utility model relates to a cooling fan, in particular to a fan impeller with stacked fan blade assemblies.

Background technique

Today's heat dissipation fans are mostly one of two types: the blade and the fan hub are integrally formed, and the metal stamping blade is one of the two types.

The integrated structure of the blade and the fan hub is simple, and the manufacturing process is relatively simple, so it can be made into a thin cooling fan with a small volume. The minimum limit of the blade thickness of this structure is limited by the strength of the plastic structure and the technological level of the injection molding process. This structure cannot be equipped with more blades in a limited space, so it is hindered by the technological level and cannot be further improved to enhance it. efficacy.

Although blades made of metal stamping can be made into thinner blades, the stamping material is limited by the plane space. Therefore, when the number of blades increases, if it is necessary to integrally form all the blades, the width of the blades can only be reduced; if a larger width of the blades is required, only a single blade can be stamped separately. Therefore, it is necessary to adopt a method of separately manufacturing and reassembling a single blade at a relatively high manufacturing cost to meet the demand for densely arranging wide blades.

In view of this, the designer of the utility model then aimed at the above-mentioned prior art, researched with great concentration and cooperated with the application of theories, tried his best to solve the above-mentioned problems, which became the improved goal of the designer of the utility model.

Utility model content

The utility model provides a fan impeller with a stacked fan blade assembly, which tries to solve the above problems.

The utility model provides a fan impeller, which includes a plurality of fan blade assemblies, and each fan blade assembly includes a metal ring frame and a plurality of metal blades that are integrally formed, one end of each metal blade is connected to the corresponding metal ring frame and each fan The metal blades in the leaf assembly are radially arranged around the corresponding metal ring frame; wherein, the metal ring frame is stacked and the metal blades are arranged in a radial ring, and the width of at least one of each metal blade is not less than the width of this metal blade and the adjacent other metal blade. The spacing between the blades along the circumference of the fan impeller.

Preferably, the other ends of each metal blade form a connection structure, the connection structure connects adjacent metal blades, and the connection structure can buckle adjacent metal blades. The fan impeller further includes an outer ring frame, the outer ring frame surrounds each metal ring frame, and the outer ring frame connects each metal blade respectively. The other end of each metal blade forms an engaging structure respectively, and the engaging structure is embedded in the outer ring frame. The fan impeller further includes a fan hub, and the metal ring frame is embedded in the fan hub. The fan impeller further includes a rotating shaft assembly, the metal ring frame surrounds the rotating shaft assembly, and the rotating shaft assembly is embedded in the fan hub. Each metal blade is connected to the outer edge of the corresponding metal ring frame, and the junction between each metal blade and the corresponding metal ring frame is bent. The inner edge of one of the metal ring frames extends a ring wall, and the other metal ring frames are sleeved on the ring wall.

The fan impeller of the present invention assembles metal blades by stacking multiple fan blade components, so not only can the metal blades with a larger width be manufactured, but also metal blades can be densely arranged in the fan impeller, thereby increasing the air volume to improve heat dissipation efficiency.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of a fan impeller according to a first embodiment of the present invention;

Fig. 2 is a three-dimensional exploded schematic diagram of the fan blade assembly in the first embodiment of the present invention;

Fig. 3 is a three-dimensional combined schematic view of the fan blade assembly in the first embodiment of the present invention;

Fig. 4 is a radial sectional view of the fan blade assembly in the first embodiment of the present invention;

Fig. 5 is a radial sectional view of the fan impeller according to the first embodiment of the present invention;

Fig. 6 is a schematic diagram of possible variations of the shaft assembly in the first embodiment of the present invention;

Fig. 7 is a three-dimensional exploded schematic view of the fan blade assembly in the second embodiment of the present invention;

Fig. 8 is a three-dimensional combined schematic view of the fan blade assembly in the second embodiment of the present invention;

Fig. 9 is a schematic perspective view of the fan impeller according to the second embodiment of the present invention;

Fig. 10 is a three-dimensional schematic diagram of a fan impeller according to a third embodiment of the present invention;

Fig. 11 is a three-dimensional exploded schematic view of the fan blade assembly in the third embodiment of the present invention;

Fig. 12 is a three-dimensional combined schematic view of the fan blade assembly in the third embodiment of the present invention;

Fig. 13 is a schematic diagram of possible variations of the outer ring frame in the third embodiment of the present invention.

Explanation of reference signs: 100, 200, 300-blade assembly; 110, 210, 310-metal ring frame; 120, 220, 320-metal blade; 121, 221, 321-connection structure; 122, 222, 322-hook Arm; 123, 223, 323-bump; 124, 224, 324-occlusion structure; 311-ring wall; 400-shaft assembly; 500-fan hub; 600-outer ring frame; 320-end; W-width; D -spacing.

Detailed ways

Referring to FIG. 1 to FIG. 5 , the first embodiment of the present invention provides a fan impeller, which includes: a plurality of fan blade assemblies 100 , 200 , 300 , a rotating shaft assembly 400 and a fan hub 500 .

In this embodiment, the fan impeller of the present invention preferably includes three stacked fan blade assemblies 100 , 200 , 300 , but the present invention does not limit the number thereof. Each fan blade assembly 100, 200, 300 respectively includes a metal ring frame 110, 210, 310 integrally formed and a plurality of metal blades 120, 220, 320 corresponding to each metal ring frame 110, 210, 310, and each metal blade 120, 220 , 320 are elongated, and one end of each metal blade 120, 220, 320 is respectively connected to the outer edge of the corresponding metal ring frame 110, 210, 310, and each metal blade 120, 220, 320 is connected to the corresponding metal ring frame. The joints of the ring frames 110, 210, 310 are bent so that each metal blade 120, 220, 320 is on the whole two surfaces perpendicular to the corresponding metal ring frame 110, 210, 310, and each metal blade 120, 220, 320 The other ends of each form a connection structure 121, 221, 321 respectively. The plurality of metal blades 120, 220, 320 are radially arranged around the corresponding metal ring frame 110, 210, 310, and the metal blades 120, 220, 320 can be arranged at an angle along the radial direction of the metal ring frame 110, 210, 310; The blades 120, 220, 320 can also be arranged at an included angle with the radial direction of the metal ring frame 110, 210, 310, and the utility model does not limit the included angle.

The metal ring frames 110, 210, 310 are stacked so that the plurality of metal blades 120, 220, 320 are arranged in a radial ring, and the width W of at least one of the metal blades 120, 220, 320 is not less than that after stacking. The spacing D between adjacent metal blades 120 , 220 , 320 in the circumferential direction of the fan impeller. The structure of each fan blade assembly 100, 200, 300 is roughly the same, but in order to make the plurality of metal blades 120, 220, 320 can be arranged on the same plane, the metal blades 120, 220, 320 in each fan blade assembly 100, 200, 300 The relative positions of the corresponding metal ring frames 110, 210, 310 are slightly different, and the plurality of metal blades 120, 220, 320 can be arranged on the same on flat surface.

The inner edge of one of the metal ring frames 310 extends a ring wall 311, and the remaining metal ring frames 110, 210 are sequentially sleeved on the ring wall 311 so that the three metal ring frames 110, 210, 310 are nested and fixed. It is so easy to assemble the three fan blade assemblies 100, 200, 300.

The connection structures 121, 221, 321 are connected to adjacent metal blades 120, 220, 320. In this embodiment, each connection structure 121, 221, 321 is respectively connected to the connection structure 221 of another adjacent metal blade 220, 320, 120. , 321, 121, so that these connecting structures 121, 221, 321 are connected in series to form a ring, so the connecting structures 121, 221, 321 achieve the functions of positioning the metal blades 120, 220, 320 and strengthening the structure of the fan impeller.

These metal ring frames 110, 210, 310 surround the rotating shaft assembly 400, and the fan hub 500 is formed by overmolding, so that the metal ring frames 110, 210, 310 and the rotating shaft assembly are all embedded in the fan hub 500. The fan hub 500 combines the fan blade assemblies 100 , 200 , 300 and the rotating shaft assembly 400 into one. Wherein, the fan impeller is used to be pivotally arranged on a fan base (not shown in the figure) so as to be able to rotate on the fan base.

Referring to FIG. 5 and FIG. 6 , corresponding to the difference in the pivotal structure on the fan base, the fan impeller can be configured with different forms of rotating shaft assemblies 400 . For example, when the pivoting structure on the fan base is in the form of a metal cylinder, the fan impeller needs to be equipped with a shaft assembly 400 in the form of a metal rod as shown in Figure 5; when the pivoting structure on the fan base on the fan base is in the form of a metal rod , the fan impeller needs to be equipped with a rotating shaft assembly 400 in the form of a metal cylinder as shown in FIG. 6 .

Referring to Figures 7 to 9, the second embodiment of the present invention provides a fan impeller, which includes: a plurality of fan blade assemblies 100, 200, 300, a rotating shaft assembly 400 and a fan hub 500, the structure of which is roughly the same as that of the aforementioned first An embodiment, the same part will not be repeated.

The difference between this embodiment and the first embodiment is that the connection structure 121, 221, 321 of each metal blade includes a hook arm 122, 222, 322 and a bump 123, 223, 323, and each metal blade 120, 220, 320 Relying on the hook arms 122, 222, 322 to buckle the protrusions 323, 123, 223 of the adjacent metal blades 320, 120, 220 respectively, so the connection structures 121, 221, 321 achieve the positioning and strengthening of the metal blades 120, 220, 320 The effect of the fan impeller structure.

Referring to Figures 10 to 12, the third embodiment of the present invention provides a fan impeller, which includes: a plurality of fan blade assemblies 100, 200, 300, a rotating shaft assembly 400, a fan hub 500 and an outer ring frame 600, Its structure is roughly the same as that of the aforementioned first embodiment, and the same parts will not be repeated here.

The difference between this embodiment and the first embodiment is that one end of each metal blade 120, 220, 320 is respectively connected to the outer edge of the corresponding metal ring frame 110, 210, 310, and the other end of each metal blade 120, 220, 320 One end forms an engaging structure 124 , 224 , 324 respectively. The outer ring frame 600 is made by overmolding, it surrounds the stacked metal ring frames 110, 210, 310, and the engaging structures 124, 224, 324 are embedded in the outer ring frame 600 to achieve the positioning of the metal blades 120, 220 , The effect of the position 320; moreover, by virtue of the outer ring frame 600 connecting the plurality of metal blades 120, 220, 320 to achieve the effect of strengthening the structure of the fan impeller. The present invention does not limit the position of the outer ring frame 600. For example, FIG. 13 shows an embodiment of another possible configuration position of the snapping structure and the outer ring frame.

The fan impeller of the utility model assembles metal blades by stacking multiple fan blade components, and the metal blades are distributed and formed on each fan blade component. Metal blades are densely arranged and easy to assemble.

The above description is only illustrative, rather than restrictive, of the present utility model. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims. But all will fall within the protection scope of the present utility model.

Claims (11)

1. A fan impeller, characterized in that it comprises: A plurality of fan blade assemblies, each of which includes a metal ring frame and a plurality of metal blades that are integrally formed, one end of each of the metal blades is connected to the corresponding metal ring frame, and the plurality of metal ring frames in each of the fan blade assemblies The blades are radially arranged around the corresponding metal ring frame; Wherein, the metal ring frame is stacked and the plurality of metal blades are arranged in a radial ring, and the width of at least one of the metal blades is not less than the distance between the metal blade and the adjacent metal blade along the circumferential direction of the fan impeller . 2 . The fan impeller as claimed in claim 1 , wherein the other ends of each of the metal blades respectively form a connecting structure. 3 . 3. The fan impeller as claimed in claim 2, wherein the connection structure connects the adjacent metal blades. 4. The fan impeller as claimed in claim 3, wherein the connecting structure fastens the adjacent metal blades. 5 . The fan impeller according to claim 1 , further comprising an outer ring frame surrounding each of the metal ring frames, and the outer ring frame is respectively connected to each of the metal blades. 6 . The fan impeller according to claim 5 , wherein the other ends of the metal blades respectively form an engaging structure, and the engaging structure is embedded in the outer ring frame. 7 . 7. The fan impeller according to claim 1, further comprising a fan hub, the metal ring frame is embedded in the fan hub. 8. The fan impeller according to claim 1, further comprising a shaft assembly, the metal ring frame surrounds the shaft assembly, and the shaft assembly is embedded in the fan hub. 9. The fan impeller as claimed in claim 1, wherein each of the metal blades is connected to an outer edge of the corresponding metal ring frame. 10 . The fan impeller as claimed in claim 1 , wherein the joints between each of the metal blades and the corresponding metal ring frame are bent. 11 . 11 . The fan impeller according to claim 1 , wherein an inner edge of one of the metal ring frames extends a ring wall, and the rest of the metal ring frames are sleeved on the ring wall. 11 .