A fan with a ceramic shaft with a metal core

Abstract

The utility model belongs to the technical field of pivot, especially relate to a fan with metal core ceramic shaft, including shell, be equipped with rotating cavity in the shell, be equipped with impeller seat in rotating cavity, be equipped with fan blade on impeller seat, be equipped with coil between impeller seat and fan blade, be equipped with rotating shaft in coil, rotating shaft one end connects fan blade, the other end is worn and is equipped with on impeller seat, rotating shaft includes first metal core, second metal core and ceramic sleeve of setting on first metal core and second metal core, first metal core and second metal core one end respectively extend ceramic sleeve. The both ends of rotating shaft are respectively provided with first metal core and second metal core, and when the both ends are connected with other structures, the breakage resistance is strong, damage is not easy to cause, the metal material strength is high, at the same time in order to insulation, avoid fan in the place of free charge electric field work and be broken down, first metal core and second metal core are connected through the ceramic sleeve setting, and the current is blocked.

Description

Technical Field

[0001] This utility model belongs to the field of rotating shaft technology, and in particular relates to a fan with a ceramic shaft with a metal core. Background Technology

[0002] Fans are a common product in our lives. They are needed to dissipate heat in areas with free electric fields. Currently, many fans use metal shafts, which are strong, resistant to bending, and wear, making them a commonly used connecting shaft. However, using a metal shaft in areas with free electric fields can cause the fan to break down, resulting in damage and malfunction. This has led to the development of insulating, wear-resistant, and corrosion-resistant ceramic shafts. However, ceramic shafts are brittle, have poor bending resistance, and low strength, making them prone to damage during installation and use. Utility Model Content

[0003] The purpose of this invention is to provide a fan with a ceramic shaft and a metal core, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides a fan with a ceramic shaft and a metal core, comprising a housing; a rotating cavity is provided inside the housing, an impeller seat is provided inside the rotating cavity, a fan blade is rotatably mounted on the impeller seat, a coil is provided between the impeller seat and the fan blade, a rotating shaft is rotatably mounted inside the coil, one end of the rotating shaft is connected to the fan blade, and the other end passes through the impeller seat; the rotating shaft includes a first metal core, a second metal core, and a ceramic sleeve fitted on the first metal core and the second metal core; one end of the first metal core and the second metal core respectively extends out of the ceramic sleeve.

[0005] Optionally, both the first metal core and the second metal core are provided with mounting grooves, and the ceramic sleeve is fitted into the two mounting grooves.

[0006] Optionally, the ceramic sleeve is fitted onto the middle of the rotating shaft.

[0007] Optionally, one end of the first metal core is provided with a snap-fit ​​part, and a snap-fit ​​groove is provided around the snap-fit ​​part. The snap-fit ​​part is used to snap with the fan blade, and the rotation of the rotating shaft drives the fan blade to rotate.

[0008] Optionally, the second metal core is connected to the impeller seat, the impeller seat is provided with a mounting post, the mounting post is provided with a mounting hole, a first bearing is provided in the mounting hole, and one end of the rotating shaft is rotatably inserted into the first bearing.

[0009] Optionally, a circuit board is provided between the coil and the impeller seat, the circuit board has an opening in the middle, the mounting post can be inserted through the opening, and the circuit board is electrically connected to the coil.

[0010] Optionally, the fan blade includes a central rotating part and a plurality of blades disposed on the rotating part; each blade is inclined downward and each blade is provided with at least one reinforcing rib, the reinforcing rib being distributed on the front or back of the blade.

[0011] Optionally, the extending direction of the reinforcing rib is perpendicular to the tilting direction of the blade.

[0012] Compared with the prior art, the above-mentioned technical solutions of the fan with a ceramic shaft with a metal core provided in this utility model embodiment have at least one of the following technical effects:

[0013] Specifically, a first metal core and a second metal core are respectively installed at both ends of the rotating shaft. When these two ends are connected to other structures, they have strong resistance to bending and are not easily damaged. The metal material has high strength. At the same time, for insulation, to prevent the fan from being broken down due to operating in an area with free charge electric field, the first metal core and the second metal core are connected by a ceramic sleeve, which blocks the current flow and prevents the fan from being broken down. The ceramic sleeve has strong wear resistance and corrosion resistance, and has a long service life. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the rotating shaft structure.

[0017] Figure 3 This is a schematic diagram of the rotating shaft section.

[0018] Figure 4 This is a schematic diagram of the blade structure.

[0019] The following are the labeling elements in the figure:

[0020] 100. Outer casing; 110. Rotating cavity; 120. Impeller seat; 121. Mounting post; 122. Mounting hole; 123. First bearing;

[0021] 200. Fan blade; 210. Rotating part; 220. Blade; 230. Reinforcing rib;

[0022] 300, coil;

[0023] 400, Rotating shaft; 410, First metal core; 411, Mounting groove; 412, Snap-fit ​​groove; 420, Second metal core; 430, Ceramic sleeve;

[0024] 500, circuit board; 510, opening. Detailed Implementation

[0025] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0026] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0029] In one embodiment of this utility model, according to Figure 1-4As shown, the device includes a housing 100; a rotating cavity 110 is provided inside the housing 100, an impeller seat 120 is provided inside the rotating cavity 110, a fan blade 200 is rotatably mounted on the impeller seat 120, a coil 300 is provided between the impeller seat 120 and the fan blade 200, a rotating shaft 400 is rotatably mounted inside the coil 300, one end of the rotating shaft 400 is connected to the fan blade 200, and the other end passes through the impeller seat 120; the rotating shaft 400 includes a first metal core 410, a second metal core 420, and a ceramic sleeve 430 sleeved on the first metal core 410 and the second metal core 420; one end of the first metal core 410 and the second metal core 420 respectively extends out of the ceramic sleeve 430.

[0030] Specifically, the rotating shaft 400 has a first metal core 410 and a second metal core 420 at both ends. When connected to other structures, these two ends have strong resistance to bending and are not easily damaged. The metal material has high strength. Simultaneously, to ensure insulation and prevent the fan from being damaged by an ionized electric field, the first metal core 410 and the second metal core 420 are connected by a ceramic sleeve 430, which blocks the flow of current and prevents the fan from being damaged. The ceramic sleeve 430 has strong wear resistance and corrosion resistance, resulting in a long service life.

[0031] In another embodiment of this utility model, according to Figure 2 and 3 As shown, both the first metal core 410 and the second metal core 420 are provided with mounting grooves 411, and the ceramic sleeve 430 is fitted into the two mounting grooves 411. The ceramic sleeve 430 is fitted into the middle position of the rotating shaft 400.

[0032] Specifically, the first metal core 410 and the second metal core 420 are connected by fitting a ceramic sleeve 430 onto the two mounting slots 411. The three are interconnected to form a complete rotating shaft 400. The first metal core 410 and the second metal core 420 are disconnected but connected by the ceramic sleeve 430, thus blocking the flow of current and preventing the fan from being damaged. It can be understood that ceramic and metal can be riveted, bonded, welded, or sintered together.

[0033] In another embodiment of this utility model, according to Figure 2 and 3As shown, one end of the first metal core 410 is provided with a snap-fit ​​portion, and a snap-fit ​​groove 412 is arranged around the snap-fit ​​portion. The snap-fit ​​portion is used to snap with the fan blade 200. The rotation of the rotating shaft 400 drives the fan blade 200 to rotate. Specifically, the snap-fit ​​portion of the first metal core 410 is used to connect with the fan blade 200. The fan blade 200 is provided with a snap-fit ​​position, and a snap-fit ​​protrusion is provided in the snap-fit ​​position. When the snap-fit ​​portion passes through the snap-fit ​​position, the snap-fit ​​protrusion and the snap-fit ​​groove 412 cooperate with each other to snap and fix it. It can be understood that the snap-fit ​​protrusion is elastic. When the snap-fit ​​portion extends into the snap-fit ​​position, the snap-fit ​​protrusion is elastically contracted under force. When it continues to go deeper into the snap-fit ​​groove 412, the snap-fit ​​protrusion elastically recovers and snaps with the snap-fit ​​groove 412.

[0034] In another embodiment of this utility model, according to Figure 1 As shown, the second metal core 420 is connected to the impeller seat 120. The impeller seat 120 is provided with a mounting post 121, and the mounting post 121 is provided with a mounting hole 122. A first bearing 123 is provided in the mounting hole 122, and one end of the rotating shaft 400 is rotatably inserted into the first bearing 123. Specifically, a second bearing is also provided in the coil 300. The rotating shaft 400 passes through the first bearing 123 and rotates under the drive of the coil 300, thereby driving the fan blade 200 to rotate.

[0035] In another embodiment of this utility model, according to Figure 1 As shown, a circuit board 500 is also provided between the coil 300 and the impeller seat 120. The circuit board 500 has an opening 510 in the middle, and the mounting post 121 can be inserted through the opening 510. The circuit board 500 is electrically connected to the coil 300.

[0036] In another embodiment of this utility model, such as Figure 1 and 4 As shown, the fan blade 200 includes a central rotating portion 210 and a plurality of blades 220 disposed on the rotating portion 210. Each blade 220 is inclined downwards and has at least one reinforcing rib 230, which are distributed on the front or back of the blade 220. The extending direction of the reinforcing rib 230 is perpendicular to the tilting direction of the blade 220. Specifically, the reinforcing rib 230 can strengthen the blade 220 and increase its service life. The direction of the reinforcing rib 230 is perpendicular to the tilting direction of the blade 220, which is the direction of the force during rotation. The reinforcing rib 230 can share the force and increase the strength of the blade 220.

[0037] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of this utility model. It should not be construed that the specific implementation of this utility model is limited to these descriptions. For those skilled in the art, the architectural form of this utility model can be flexibly varied without departing from its concept, and a series of products can be derived. Any simple deductions or substitutions should be considered as falling within the patent protection scope defined by the submitted claims.

Claims

1. A fan with a ceramic shaft and a metal core, characterized in that, The device includes an outer casing; a rotating cavity is provided inside the outer casing, an impeller seat is provided inside the rotating cavity, a fan blade is rotatably mounted on the impeller seat, a coil is provided between the impeller seat and the fan blade, a rotating shaft is rotatably mounted inside the coil, one end of the rotating shaft is connected to the fan blade, and the other end passes through the impeller seat; the rotating shaft includes a first metal core, a second metal core, and a ceramic sleeve fitted on the first metal core and the second metal core; one end of the first metal core and the second metal core respectively extends out of the ceramic sleeve.

2. The fan with a ceramic shaft and metal core according to claim 1, characterized in that, Both the first metal core and the second metal core are provided with mounting grooves, and the ceramic sleeve is fitted into the two mounting grooves.

3. The fan with a ceramic shaft and metal core according to claim 2, characterized in that, The ceramic sleeve is fitted onto the middle part of the rotating shaft.

4. The fan with a ceramic shaft and metal core according to claim 1, characterized in that, One end of the first metal core is provided with a snap-fit ​​part, and a snap-fit ​​groove is provided around the snap-fit ​​part. The snap-fit ​​part is used to snap-fit ​​with the fan blade, and the rotation of the rotating shaft drives the fan blade to rotate.

5. The fan with a ceramic shaft and metal core according to claim 4, characterized in that, The second metal core is connected to the impeller seat, the impeller seat is provided with a mounting post, the mounting post is provided with a mounting hole, a first bearing is provided in the mounting hole, and one end of the rotating shaft is rotatably inserted into the first bearing.

6. The fan with a ceramic shaft and metal core according to claim 5, characterized in that, A circuit board is also provided between the coil and the impeller seat. The circuit board has an opening in the middle, through which the mounting post can be inserted. The circuit board is electrically connected to the coil.

7. The fan with a ceramic shaft and metal core according to claim 1, characterized in that, The fan blade includes a central rotating part and a plurality of blades disposed on the rotating part; each blade is inclined downward and each blade is provided with at least one reinforcing rib, which is distributed on the front or back of the blade.

8. The fan with a ceramic shaft and metal core according to claim 7, characterized in that, The extension direction of the reinforcing rib is perpendicular to the tilt direction of the blade.

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