Oil sealing structure and fan

Abstract

The oil sealing structure comprises a rotating shaft, an oil suction piece and a positioning cover, the positioning cover is connected with the rotating shaft, an oil breaking groove is formed in the circumferential direction of the rotating shaft, and the oil suction piece is arranged close to the oil breaking groove; and the lubricating oil is adsorbed by the oil absorption piece when moving to the oil cut-off groove under the rotation of the rotating shaft. The oil sealing device can effectively prevent lubricating oil from being thrown out, remarkably improves the oil sealing effect, reduces equipment faults caused by leakage of the lubricating oil, and prolongs the service life of equipment.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field especially relates to a seal oil structure and fan. BACKGROUND

[0002] With fan in vehicle wireless fills, PM2.5 etc. electronic product application, fan in operation part of oil will throw out the phenomenon, lead to fan premature failure, in order to improve this condition, carry out oil conservation, and the existing mode improves this condition through the design of locating cap, but rely on locating cap not only single mode, and the effect is not ideal. UTILITY MODEL CONTENT

[0003] The utility model aims at overcoming the insufficient of prior art, provide a seal oil structure and fan.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] On the one hand, the utility model provides a seal oil structure, including pivot, oil absorbing part and locating cap, the locating cap is connected with the pivot, the pivot is circumferentially provided with oil breaking groove, and the oil absorbing part is arranged close to the oil breaking groove, when lubricating oil moves to the oil breaking groove under the rotation of the pivot, is adsorbed by the oil absorbing part.

[0006] Further, the groove wall of the oil breaking groove is provided with an inclined surface.

[0007] Further, the oil absorbing part is annular structure, and the inner ring of the oil absorbing part is in contact with the pivot.

[0008] Further, the contact part of the inner ring of the oil absorbing part and the pivot is located above the oil breaking groove.

[0009] Further, the outer ring of the oil absorbing part is fixedly connected with the locating cap.

[0010] Further, the bottom of the locating cap is provided with a nesting hole, and the oil absorbing part is fixed in the nesting hole.

[0011] Further, the oil absorbing part is made of oleophilic material.

[0012] On the other hand, the utility model further provides a fan, which comprises a fan blade, an outer frame, a stator assembly, a bearing and the above-mentioned seal oil structure, the stator assembly is fixed in the outer frame, the bearing is connected with the stator assembly, the pivot is connected with the bearing, the fan blade is connected with the pivot, and the pivot rotates to drive the fan blade to rotate.

[0013] Further, it further comprises a buckle ring, the buckle ring is clamped on the pivot, and the bearing is limited between the locating cap and the buckle ring.

[0014] Furthermore, it also includes a gasket located at the bottom of the rotating shaft.

[0015] The advantages of this invention compared to existing technologies are as follows: An oil-sealing structure includes a rotating shaft, an oil-absorbing component, and a positioning cover. The positioning cover is connected to the rotating shaft, and the rotating shaft has an oil-cut-off groove circumferentially arranged. The oil-absorbing component is positioned close to the oil-cut-off groove. When the lubricating oil moves to the oil-cut-off groove under the rotation of the rotating shaft, it is absorbed by the oil-absorbing component. This invention effectively prevents lubricating oil from being thrown out, significantly improves the oil-sealing effect, reduces equipment failures caused by lubricating oil leakage, and extends the service life of the equipment.

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model, it can be implemented according to the contents of the specification. In order to make the above and other objectives, features and advantages of this utility model more obvious and easy to understand, the following are preferred embodiments, which are described in detail below. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 An assembly drawing of a fan is provided for a specific embodiment of this utility model;

[0019] Figure 2 An exploded view of a fan provided for a specific embodiment of this utility model;

[0020] Figure 3 A cross-sectional view of a fan provided for a specific embodiment of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of a positioning cover in a fan, provided for a specific embodiment of the present utility model.

[0022] Figure Labels

[0023] 1. Fan blade; 2. Outer frame; 3. Shaft; 31. Oil cut-off groove; 311. Inclined surface; 4. Oil suction component; 5. Positioning cover; 51. Nesting hole; 6. Bearing; 7. Snap ring; 8. Gasket; 9. Stator assembly. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] 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 at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] like Figures 1 to 4 As shown, this utility model embodiment provides an oil sealing structure, including a rotating shaft 3, an oil suction member 4, and a positioning cover 5. The positioning cover 5 is connected to the rotating shaft 3. The rotating shaft 3 is provided with an oil cut-off groove 31 in the circumferential direction. The oil suction member 4 is arranged close to the oil cut-off groove 31. When the lubricating oil moves to the oil cut-off groove 31 under the rotation of the rotating shaft 3, it is absorbed by the oil suction member 4.

[0031] The rotating shaft 3 can be made of a high-strength and wear-resistant metal material, such as stainless steel, to ensure that it is not easily worn or deformed during long-term rotation. The connection between the rotating shaft 3 and the positioning cover 5 can take various forms. For example, an external thread can be provided on the outer circumference of the rotating shaft 3, and a corresponding internal threaded hole can be provided in the positioning cover 5, achieving a stable connection through threaded engagement; alternatively, a snap-fit ​​protrusion can be provided on the rotating shaft 3, and a corresponding snap-fit ​​groove can be provided in the positioning cover 5, connecting them through snap-fit. An oil cut-off groove 31 is provided circumferentially on the rotating shaft 3. The oil cut-off groove 31 can be an annular groove, with its depth adjustable according to actual needs, generally between 0.5mm and 2mm, and its width between 1mm and 3mm. This size ensures that the lubricating oil has sufficient space within the groove without excessively weakening the strength of the rotating shaft 3.

[0032] Specifically, the oil cut-off groove 31 has an inclined surface 311 on its groove wall. The angle between the inclined surface 311 and the axial direction of the rotating shaft 3 can be set to 30°-60°, such as 45°, so that when the rotating shaft 3 rotates, the lubricating oil can more smoothly converge into the oil cut-off groove 31 along the inclined surface 311, avoiding the accumulation of lubricating oil on the groove wall.

[0033] The oil-absorbing component 4 is arranged near the oil-cut-off groove 31. The oil-absorbing component 4 has a ring-shaped structure and is made of an oil-loving material, such as sponge or non-woven fabric. The inner ring of the oil-absorbing component 4 contacts the rotating shaft 3, with the contact point located above the oil-cut-off groove 31 to ensure that the lubricating oil is promptly absorbed after entering the oil-cut-off groove 31. The tightness of the contact between the inner ring of the oil-absorbing component 4 and the rotating shaft 3 can be achieved by controlling the inner diameter of the oil-absorbing component 4 to be slightly smaller than the outer diameter of the rotating shaft 3. This ensures good contact between the oil-absorbing component 4 and the rotating shaft 3 without causing excessive resistance to the rotation of the rotating shaft 3.

[0034] The outer ring of the oil-absorbing component 4 is fixedly connected to the positioning cover 5. Specifically, the bottom of the positioning cover 5 is provided with a nesting hole 51. The oil-absorbing component 4 can be fixed in the nesting hole 51 by interference fit, or the oil-absorbing component 4 can be fixed in the nesting hole 51 by adhesive such as glue, so as to ensure that the oil-absorbing component 4 will not loosen or shift during use.

[0035] When the oil sealing structure is working, the lubricating oil adhering to the rotating shaft 3 moves with the rotation of the shaft 3. Due to the presence of the oil cut-off groove 31 and the guidance of the inclined surface 311 of the groove wall, the lubricating oil will gather in the oil cut-off groove 31. At this time, the oil suction component 4 arranged near the oil cut-off groove 31 can quickly absorb the lubricating oil in the oil cut-off groove 31, thereby effectively preventing the lubricating oil from being thrown out of the rotating shaft 3, significantly improving the oil sealing effect, reducing equipment failures caused by lubricating oil leakage, and extending the service life of the equipment.

[0036] In addition to an annular groove, the shape of the oil cut-off groove 31 can also be a spiral groove. The spiral groove can more effectively guide the lubricating oil to flow in a specific direction and converge into the oil cut-off groove 31.

[0037] like Figures 1 to 4 As shown, this utility model embodiment also provides a fan, including a fan blade 1, an outer frame 2, a stator assembly 9, a bearing 6, and the above-mentioned oil sealing structure. The stator assembly 9 is fixed in the outer frame 2, the bearing 6 is connected to the stator assembly 9, the rotating shaft 3 is connected to the bearing 6, and the fan blade 1 is connected to the rotating shaft 3. When the rotating shaft 3 rotates, it drives the fan blade 1 to rotate.

[0038] The outer frame 2, serving as the fan's outer shell, protects and supports the internal components. It can be made of a high-strength, yet resilient, plastic, such as ABS plastic, to reduce the overall weight of the fan while maintaining structural strength. The outer frame 2 can be round, square, or other conventional shapes, and its dimensions depend on the specific application.

[0039] The stator assembly 9 is fixed in the outer frame 2. The specific fixing method can be to set a fixing lug on the outer periphery of the stator assembly 9, open a fixing groove at the corresponding position on the inner wall of the outer frame 2, insert the fixing lug into the fixing groove, and then tighten it with screws; or use strong glue to directly bond the stator assembly 9 to the inner wall of the outer frame 2.

[0040] Bearing 6 can be a deep groove ball bearing 6, the inner diameter of which is matched with the diameter of the shaft 3 to ensure that bearing 6 and shaft 3 fit tightly and can rotate flexibly. The connection between bearing 6 and stator assembly 9 can be achieved by setting mounting holes for bearing 6 on stator assembly 9, and pressing bearing 6 into the mounting holes with an interference fit. To further enhance the connection stability, an appropriate amount of thread-locking agent can be applied to the contact area between bearing 6 and mounting hole.

[0041] The rotating shaft 3 passes through the inner hole of the bearing 6, and the two are connected by an interference fit. The fan blade 1 is connected to the rotating shaft 3. The fan blade 1 can be made of lightweight and high-strength aluminum alloy or plastic. The connection method between the fan blade 1 and the rotating shaft 3 can be as follows: a shaft hole is set in the center of the fan blade 1, and the shaft hole and the rotating shaft 3 are connected by a key. A keyway is machined on the rotating shaft 3, the key is embedded in the keyway, and then the shaft hole of the fan blade 1 is fitted onto the rotating shaft 3, and the fan blade 1 is fixed to the rotating shaft 3 with screws; or a snap ring connection is used, with an annular groove on the rotating shaft 3 and a snap ring groove in the shaft hole of the fan blade 1. The snap ring is installed in the groove, achieving a quick connection between the fan blade 1 and the rotating shaft 3. When the rotating shaft 3 rotates, it can stably drive the fan blade 1 to rotate, realizing the fan's air delivery function.

[0042] Furthermore, such as Figure 3 As shown, a fan also includes a retaining ring 7, which is snapped onto the rotating shaft 3, and the bearing 6 is confined between the positioning cover 5 and the retaining ring 7.

[0043] The function of the retaining ring 7 is to cooperate with the positioning cover 5 to securely limit the bearing 6 in a specific position, ensuring that all components of the fan can operate stably and reliably.

[0044] The retaining ring 7 is made of a metal material with a certain degree of elasticity and strength, such as spring steel. This material ensures that when the retaining ring 7 is snapped onto the rotating shaft 3, it can generate sufficient elastic deformation to achieve the snapping action, and it can also maintain a stable state after snapping. The retaining ring 7 is generally an open ring structure, and the open design facilitates its installation onto the rotating shaft 3. The cross-sectional shape of the retaining ring 7 can be circular, rectangular, etc., and the specific dimensions are determined according to the diameter of the rotating shaft 3 and the actual usage requirements.

[0045] A ring-shaped groove is machined on the rotating shaft 3, and the depth and width of the groove match the size of the retaining ring 7. When installing the retaining ring 7, the opening of the retaining ring 7 is opened so that it can be inserted into the rotating shaft 3 and locked into the groove. After the retaining ring 7 is locked into the groove, due to its own elasticity, it will fit tightly in the groove and will not easily fall off.

[0046] Bearing 6 is positioned between the positioning cover 5 and the retaining ring 7. After the positioning cover 5 is connected to the rotating shaft 3, one end face of the positioning cover 5 contacts one end face of the bearing 6; while after the retaining ring 7 is engaged with the rotating shaft 3, one side of the retaining ring 7 contacts the other end face of the bearing 6. Thus, through the combined action of the positioning cover 5 and the retaining ring 7, bearing 6 is firmly fixed in a specific position in the axial direction, preventing axial movement. For example, during fan operation, the rotating shaft 3 rotates at high speed. If bearing 6 is not effectively limited, it may move in the axial direction, causing friction or collision with other components, affecting the normal operation and service life of the fan. This method of limiting bearing 6 through the cooperation of the retaining ring 7 and the positioning cover 5 avoids the above problems, ensuring that bearing 6 is always in a stable working state.

[0047] Furthermore, such as Figure 3 As shown, a fan also includes a pad 8, which is disposed at the bottom of the shaft 3.

[0048] The material of gasket 8 can be flexibly selected according to actual needs, such as rubber, specifically nitrile rubber or polytetrafluoroethylene. Gasket 8 has a sheet-like structure;

[0049] When installing shim 8, place shim 8 on the bottom of shaft 3, ensuring that shim 8 is flat and perpendicular to shaft 3.

[0050] By placing a shim 8 at the bottom of the shaft 3, vibrations generated during the rotation of the shaft 3 can be effectively absorbed, reducing noise caused by vibration transmission and making the fan operate more quietly. Furthermore, the shim 8 prevents direct contact and friction between the bottom of the shaft 3 and other components, preventing wear on the bottom of the shaft 3 and protecting the surfaces of the components in contact with it, thus extending the service life of all fan components. In addition, by selecting shims 8 of different thicknesses, the axial position of the shaft 3 can be fine-tuned, ensuring the assembly precision between fan components and making the fan operate more stably.

[0051] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. An oil containment structure, characterized by, The oil sealing structure comprises a rotating shaft, an oil absorbing part and a locating cover, the locating cover is connected with the rotating shaft, the rotating shaft is provided with an oil breaking groove in the circumferential direction, and the oil absorbing part is arranged close to the oil breaking groove; when the lubricating oil moves to the oil breaking groove under the rotation of the rotating shaft, the oil absorbing part absorbs the lubricating oil.

2. The oil containment structure of claim 1, wherein An inclined surface is arranged on the groove wall of the oil breaking groove.

3. The oil containment structure of claim 1, wherein The oil absorbing part is in a ring structure, and the inner ring of the oil absorbing part is in contact with the rotating shaft.

4. The oil containment structure of claim 3, wherein, The contact part of the inner ring of the oil absorbing part with the rotating shaft is located above the oil breaking groove.

5. The oil containment structure of claim 3, wherein, The outer ring of the oil absorbing part is fixedly connected with the locating cover.

6. An oil containment structure according to claim 5, wherein, A nesting hole is arranged in the bottom of the locating cover, and the oil absorbing part is fixed in the nesting hole.

7. The oil containment structure of claim 1, wherein The oil absorbing part is made of oleophilic material.

8. A fan, characterized by The oil sealing structure comprises a fan blade, an outer frame, a stator assembly, a bearing and the oil sealing structure of any one of claims 1-7, the stator assembly is fixed in the outer frame, the bearing is connected with the stator assembly, the rotating shaft is connected with the bearing, the fan blade is connected with the rotating shaft, and when the rotating shaft rotates, the fan blade rotates.

9. A fan as claimed in claim 8, wherein A clasp is further arranged, the clasp is clamped on the rotating shaft, and the bearing is limited between the locating cover and the clasp.

10. A fan as claimed in claim 8, wherein A gasket is further arranged at the bottom of the rotating shaft.

Images