Fan frame

Abstract

The utility model discloses a fan frame which comprises an annular supporting frame, the annular supporting frame is provided with a hollow cavity, a bottom tray is arranged on the inner lower side of the hollow cavity, and the outer circumferential side wall of the bottom tray is connected with the inner circumferential side wall of the annular supporting frame through supporting ribs. The bottom tray comprises a main body part, a coupling part and an annular positioning convex part, the annular positioning convex part integrally and upwards protrudes from the periphery of the upper end of the main body part, the coupling part integrally and upwards protrudes from the middle of the upper end of the main body part, and the upper end of the coupling part upwards extends out of the annular positioning convex part and is located in the hollow cavity; a first annular positioning groove, a second annular positioning groove, a third annular positioning groove and a fourth annular positioning groove which extend in the circumferential direction are formed in the peripheral side wall of the coupling part, and the first annular positioning groove, the second annular positioning groove, the third annular positioning groove and the fourth annular positioning groove are sequentially arranged at intervals from top to bottom; therefore, the connection stability is improved, and the phenomenon of unstable operation caused by shaking due to connection looseness is avoided.

Description

Technical Field

[0001] The utility model relates to the technology of the fan field, in particular to a fan frame. Background Art

[0002] With the increasing development of the technology industry, electronic devices such as desktop computers, laptops, smartphones, and tablet computers have been frequently used in daily life. These electronic devices usually include fans for heat dissipation, and these fans need to be installed through fan frames.

[0003] For example, China's announcement number CN216306319U discloses a fan frame with a microporous structure, which includes a center disk, an outer shell and an outer frame, wherein the center disk is provided with support ribs on the circumference; the outer shell is provided on the center disk, and fan blades are provided on the outer side of the outer shell; micropores are provided on the outer frame, a middle tube is fixed on the center disk, and the outer shell is connected to the middle tube. Although it can effectively reduce the noise caused by the high-speed rotation of the blades, the tube is only connected to the outer shell through the middle hole and the shaft, and lacks a design to improve the stability of the connection. As a result, after the fan has been used for a certain period of time, the connection between the outer shell and the middle tube is prone to loosening, resulting in shaking and unstable operation.

[0004] Therefore, it is necessary to develop a new technology to solve the above problems. Utility Model Content

[0005] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a fan frame that improves the stability of the connection and avoids the phenomenon of shaking and unstable operation caused by loose connections.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] 18. The fan frame of claim 17, wherein the annular support frame comprises a hollow cavity, and a bottom tray is provided on the inner lower side of the hollow cavity, wherein the outer peripheral side wall of the bottom tray is connected to the inner peripheral side wall of the annular support frame by a supporting rib; the supporting rib is an arc structure, and a plurality of supporting ribs are provided, and the plurality of supporting ribs are uniformly spaced along the circumferential direction of the bottom tray. The bottom tray comprises a main body, a shaft connection portion and an annular positioning protrusion, the annular positioning protrusion protrudes upward from the circumference of the upper end of the main body, the shaft connection portion protrudes upward from the middle of the upper end of the main body, the upper end of the shaft connection portion extends upward from the outside of the annular positioning protrusion and is located in the hollow cavity, and the outer peripheral side wall of the shaft connection portion is provided with a first annular positioning groove, a second annular positioning groove, a third annular positioning groove and a fourth annular positioning groove extending in the circumferential direction, the first annular positioning groove, the second annular positioning groove, the third annular positioning groove and the fourth annular positioning groove being arranged in sequence from top to bottom.

[0008] As a preferred solution, the shaft connection portion has a shaft connection hole, the upper end of the shaft connection hole passes through to the upper surface of the shaft connection portion, and the lower end of the shaft connection hole passes through to the lower surface of the main body.

[0009] As a preferred solution, a first annular limiting step is provided on the upper side of the inner side wall of the shaft connecting hole, and the step surface of the first annular limiting step is arranged toward the upper side; a second annular limiting step is provided on the lower side of the inner side wall of the shaft connecting hole, and the step surface of the second annular limiting step is arranged toward the lower side.

[0010] As a preferred solution, the cross-section of the first annular positioning groove is a rectangular structure.

[0011] As a preferred solution, the cross-sections of the second annular positioning groove, the third annular positioning groove and the fourth annular positioning groove are all semicircular structures.

[0012] As a preferred solution, an annular positioning step extending along the circumferential direction is provided on the outer peripheral side wall of the shaft connection portion at the lower side of the fourth annular positioning groove.

[0013] As a preferred solution, an annular mounting portion is integrally provided outwardly on both the upper and lower sides of the outer peripheral side wall of the annular support frame, and a plurality of mounting holes are provided on the annular mounting portion.

[0014] As a preferred solution, flattened portions are provided on two opposite sides of the outer peripheral side wall of the annular mounting portion, and the flattened portions extend to the outer peripheral side wall of the annular support frame.

[0015] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that it is mainly achieved by arranging a first annular positioning groove, a second annular positioning groove, a third annular positioning groove and a fourth annular positioning groove extending in the circumferential direction on the outer peripheral side wall of the shaft connection part, and the first annular positioning groove, the second annular positioning groove, the third annular positioning groove and the fourth annular positioning groove are arranged in sequence from top to bottom. In this way, the shaft connection part can enhance the axial connection stability with the fan through the multiple annular positioning grooves arranged in sequence in the axial direction, thereby improving the connection stability and avoiding the phenomenon of shaking and unstable operation caused by loose connection.

[0016] In order to more clearly illustrate the structural features, technical means and specific purposes and functions achieved by the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of an embodiment of the present utility model from another angle;

[0019] Figure 3 It is a top view of an embodiment of the present utility model;

[0020] Figure 4 It is a bottom view of an embodiment of the present utility model;

[0021] Figure 5 It is a cross-sectional schematic diagram of an embodiment of the present utility model.

[0022] Description of the accompanying drawings:

[0023] 10. Annular support frame 11. Hollow cavity

[0024] 12. Annular mounting portion 121, mounting hole

[0025] 122, leveling part 20, bottom tray

[0026] 21. Main body 22. Shaft connection

[0027] 221, first annular positioning groove 222, second annular positioning groove

[0028] 223, third annular positioning groove 224, fourth annular positioning groove

[0029] 225, shaft connection hole 226, first annular limiting step

[0030] 227, second annular limiting step 228, annular positioning step

[0031] 23. Annular positioning protrusion 30. Support rib. DETAILED DESCRIPTION

[0032] In the description of the present invention, it should be noted that if the terms "up", "down", "left", "right", "front", "back", "center", "horizontal", "inside", "outside" and the like appear to indicate directions or positional relationships, they are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the product of the present invention is usually placed when in use. These directions or positional relationships are only used to facilitate the description of the present invention and to simplify the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0033] Please refer to Figures 1 to 5As shown, it shows the specific structure of the fan frame provided by the embodiment of the present invention. The fan frame includes an annular support frame 10, the annular support frame 10 has a hollow cavity 11, and a bottom tray 20 is provided on the inner lower side of the hollow cavity 11. The outer peripheral side wall of the bottom tray 20 and the inner peripheral side wall of the annular support frame 10 are connected by support ribs 30; the support ribs 30 are in an arc-shaped structure, and there are a plurality of support ribs 30. The plurality of support ribs 30 are uniformly spaced along the circumferential direction of the bottom tray 20. The two ends of the support ribs 30 are respectively connected to the outer peripheral side wall of the bottom tray 20 and the inner peripheral side wall of the annular support frame 10. In addition, the support ribs 30 are designed as an arc-shaped structure, which can guide and pressurize the airflow, enhance the flow rate, and improve the heat dissipation effect.

[0034] The bottom tray 20 includes a main body 21, a shaft connection portion 22 and an annular positioning protrusion 23, wherein the annular positioning protrusion 23 is integrally protruded upward from the circumference of the upper end of the main body 21, and the shaft connection portion 22 is integrally protruded upward from the middle portion of the upper end of the main body 21. The upper end of the shaft connection portion 22 extends upward from the annular positioning protrusion 23 and is located in the hollow cavity 11. The outer peripheral side wall of the shaft connection portion 22 is provided with a first annular positioning groove 221, a second annular positioning groove 222, a third annular positioning groove 223 and a fourth annular positioning groove 224 extending in the circumferential direction. The first annular positioning groove 221, the second annular positioning groove 222, the third annular positioning groove 223 and the fourth annular positioning groove 224 are arranged in sequence from top to bottom; in this way, the shaft connection portion 22 can enhance the axial connection stability with the fan through the multiple annular positioning grooves arranged in sequence in the axial direction, thereby improving the connection stability and avoiding the phenomenon of shaking and unstable operation caused by loose connection.

[0035] Preferably, in this embodiment, the cross-section of the first annular positioning groove 221 is a rectangular structure, and the cross-sections of the second annular positioning groove 222, the third annular positioning groove 223 and the fourth annular positioning groove 224 are all semicircular structures; the lower side of the fourth annular positioning groove 224 is provided with an annular positioning step 228 extending along the circumferential direction on the outer peripheral side wall of the shaft connection part 22 to achieve the function of limiting positioning.

[0036] The shaft connection portion 22 has a shaft connection hole 225. The upper end of the shaft connection hole 225 extends through the upper surface of the shaft connection portion 22, and the lower end of the shaft connection hole 225 extends through the lower surface of the main body portion 21. A first annular limiting step 226 is provided on the upper side of the inner sidewall of the shaft connection hole 225, with the step surface of the first annular limiting step 226 facing upward. A second annular limiting step 227 is provided on the lower side of the inner sidewall of the shaft connection hole 225, with the step surface of the second annular limiting step 227 facing downward. In this way, the shaft portion adapted to the shaft connection hole 225 can be limited by the first annular limiting step 226 and the second annular limiting step 227.

[0037] The annular support frame 10 has an annular mounting portion 12 integrally protruding outward from both the upper and lower sides of the outer peripheral sidewall. The annular mounting portion 12 is provided with a plurality of mounting holes 121. The mounting holes 121 are used to securely mount the fan frame as a whole to an external structure, and the mounting holes 121 can be installed and connected using common fixing parts such as screws. In addition, in this embodiment, flattened portions 122 are provided on both opposite sides of the outer peripheral sidewall of the annular mounting portion 12. The flattened portions 122 extend to the outer peripheral sidewall of the annular support frame 10. This allows the flattened portions 122 to better contact and position the fan frame with a flat surface on the external structure, thereby preventing it from sliding and reducing its overall space occupation.

[0038] To sum up, the design focus of the present invention is that it is mainly achieved by arranging a first annular positioning groove, a second annular positioning groove, a third annular positioning groove and a fourth annular positioning groove extending in the circumferential direction on the outer peripheral side wall of the shaft connection part, and the first annular positioning groove, the second annular positioning groove, the third annular positioning groove and the fourth annular positioning groove are arranged in sequence from top to bottom. In this way, the shaft connection part can enhance the axial connection stability with the fan through the multiple annular positioning grooves arranged in sequence in the axial direction, thereby improving the connection stability and avoiding the phenomenon of shaking and unstable operation caused by loose connection.

[0039] The above description is merely a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fan frame, comprising an annular support frame having a hollow cavity, a bottom tray disposed on the inner lower side of the hollow cavity, and an outer peripheral side wall of the bottom tray connected to the inner peripheral side wall of the annular support frame via support ribs; characterized in that: The support ribs are of an arc-shaped structure, and a plurality of support ribs are provided. The plurality of support ribs are arranged in sequence and at uniform intervals on the outer peripheral side of the bottom tray along the circumferential direction of the bottom tray. The bottom tray includes a main body, an axle connection portion and an annular positioning protrusion. The annular positioning protrusion is integrally protruded upward from the circumference of the upper end of the main body, and the axle connection portion is integrally protruded upward from the middle of the upper end of the main body. The upper end of the axle connection portion extends upward from the annular positioning protrusion and is located in the hollow cavity. A first annular positioning groove, a second annular positioning groove, a third annular positioning groove and a fourth annular positioning groove extending in the circumferential direction are provided on the outer peripheral side wall of the axle connection portion. The first annular positioning groove, the second annular positioning groove, the third annular positioning groove and the fourth annular positioning groove are arranged in sequence from top to bottom.

2. The fan frame according to claim 1, characterized in that: The shaft connection portion has a shaft connection hole, the upper end of the shaft connection hole passes through the upper surface of the shaft connection portion, and the lower end of the shaft connection hole passes through the lower surface of the main body.

3. The fan frame according to claim 2, characterized in that: A first annular limiting step is provided on the upper side of the inner side wall of the shaft connection hole, and the step surface of the first annular limiting step is arranged toward the upper side. A second annular limiting step is provided on the lower side of the inner side wall of the shaft connection hole, and the step surface of the second annular limiting step is arranged toward the lower side.

4. The fan frame according to claim 1, characterized in that: The cross section of the first annular positioning groove is a rectangular structure.

5. The fan frame according to claim 1, characterized in that: The cross sections of the second annular positioning groove, the third annular positioning groove and the fourth annular positioning groove are all semicircular structures.

6. The fan frame according to claim 1, characterized in that: An annular positioning step extending along the circumferential direction is provided on the outer peripheral side wall of the shaft connection portion at the lower side of the fourth annular positioning groove.

7. The fan frame according to claim 1, characterized in that: An annular mounting portion is integrally provided outwardly on both the upper and lower sides of the outer peripheral side wall of the annular support frame, and a plurality of mounting holes are provided on the annular mounting portion.

8. The fan frame according to claim 7, characterized in that: Flattened portions are provided on two opposite sides of the outer peripheral side wall of the annular mounting portion, and the flattened portions extend to the outer peripheral side wall of the annular supporting frame.

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