Rotating shaft swinging structure of miniature fan

Abstract

The utility model relates to a rotating shaft swinging structure of a miniature fan, which is characterized by comprising a first shell and a second shell, a rotating shaft is arranged on the first shell, an annular clamping groove is arranged on the rotating shaft, the rotating shaft can be rotatably embedded on the second shell, and the annular clamping groove can be rotatably clamped on the shell wall of the second shell. And the groove wall of the annular clamping groove is in sliding friction contact with the second shell. According to the utility model, not only can the manufacturing difficulty be reduced, but also the structural strength can be improved, so that the probability of damage in the use process is reduced, and the service life can be prolonged.

Description

Technical Field

[0001] The utility model relates to the field of fans, in particular to a rotating shaft swing structure of a micro fan. Background Art

[0002] The patent document with Chinese authorization publication number CN220539907U discloses a technical solution named "Foldable fan based on structural optimization", which includes the following technical features: fan body, first shell, second shell, first shaft hole, second shaft hole, first connecting buckle, second connecting buckle, buckle cap, first elastic strip, second elastic strip, first limiter, second limiter, first snap-fit ​​groove, second snap-fit ​​groove, positioning groove, storage shell, first shaft, second shaft, connecting plate, arc-shaped protrusion, arc-shaped boss, buckle ring groove, positioning protrusion, fan assembly, fan motor, fan blades, motor shaft, motor shaft hole, reinforcement plate, and tongue.

[0003] Because these foldable fans are primarily designed for portability, they are relatively small, resulting in a smaller shaft and connecting buckle. Furthermore, both the shaft and connecting buckle are constructed from multiple components (the shaft includes multiple connecting plates, multiple arc-shaped protrusions, and multiple arc-shaped bosses; the connecting buckle includes a buckle cap, a first elastic strip, a second elastic strip, and a latch). Therefore, the components that make up the shaft and connecting buckle are very small, and the limiting member used in conjunction with the shaft also needs to be very small. Consequently, the components that enable the rotatable connection on the foldable fan are very small. This not only makes the manufacturing of the shaft and connecting buckle very difficult, but also easily limits their structural strength, making them susceptible to damage during use. This significantly reduces the lifespan of the foldable fan.

[0004] Therefore, it is very necessary to design a micro fan shaft swing structure to solve the above technical problems. Utility Model Content

[0005] The purpose of the present utility model is to solve the above-mentioned problems and shortcomings and to provide a shaft swinging structure for a micro fan. The shaft swinging structure can not only reduce the manufacturing difficulty, but also help to improve the structural strength to reduce the chance of damage during use, which can help to extend the service life.

[0006] The technical solution of the present utility model is achieved as follows:

[0007] A micro fan shaft swinging structure is characterized in that it includes a first shell and a second shell, wherein a shaft is provided on the first shell, an annular groove is provided on the shaft, the shaft can be rotatably embedded in the second shell, and the annular groove can be rotatably clamped on the shell wall of the second shell, and the groove wall of the annular groove is in sliding friction contact with the second shell; the shaft is a gear shaft, and elastic limiting teeth are provided on the second shell, and the elastic limiting teeth are elastically engaged with the shaft.

[0008] Preferably, the elastic limiting tooth includes a spring portion and at least one convex tooth portion, the spring portion is arranged on the second shell, the convex tooth portion is arranged on the elastic end of the spring portion, and the convex tooth portion is elastically engaged with the rotating shaft under the elastic action of the spring portion.

[0009] Preferably, the elastic sheet portion includes a first positioning sheet and a first elastic sheet, the first positioning sheet is provided on the second shell, one end of the first elastic sheet is connected to the first positioning sheet, and the convex tooth portion is provided on the other end of the first elastic sheet.

[0010] Preferably, the elastic sheet portion includes a second elastic sheet and two second positioning sheets, the two second positioning sheets are arranged side by side on the second shell, the two ends of the second elastic sheet are respectively connected to the two second positioning sheets, and the convex tooth portion is arranged on the middle part of the second elastic sheet.

[0011] Preferably, the second elastic sheets on both sides of the convex tooth portion are curved in an arc shape in a direction away from the rotation axis.

[0012] Preferably, the second shell includes a third shell and a fourth shell, and the third shell and the fourth shell are snapped together. A snap-in hole is provided at the snap-in point between the third shell and the fourth shell, and the snap-in hole is snapped on the annular slot, and the annular slot is snapped on the third shell and / or the fourth shell.

[0013] Preferably, a receiving groove is provided on the first shell, the rotating shaft is located on the groove wall of the receiving groove, and the second shell can enter and exit the receiving groove around the rotating shaft.

[0014] Preferably, two opposite groove walls of the receiving groove are respectively provided with oppositely arranged rotating shafts, and both rotating shafts can be rotatably embedded in the second shell.

[0015] Preferably, the rotating shaft and the first shell are an integrally formed structure.

[0016] The beneficial effects of the present invention are as follows: In the swing shaft structure, a swing shaft with an annular groove is provided on the first housing, the swing shaft is rotatably embedded in the second housing, the annular groove is rotatably engaged with the wall of the second housing, and the wall of the annular groove is in sliding frictional contact with the second housing. This eliminates the need for overly delicate structures in the swing shaft structure to achieve the rotational connection, which not only reduces manufacturing difficulty but also improves the structural strength of the swing shaft structure, thereby reducing the chance of damage during use and thereby extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the three-dimensional structural diagrams of the rotating shaft swing structure of the utility model.

[0018] Figure 2 This is the second schematic diagram of the three-dimensional structure of the rotating shaft swing structure of the present invention.

[0019] Figure 3 This is one of the partial structural diagrams of the rotating shaft swing structure of the utility model.

[0020] Figure 4 This is the second partial structural diagram of the rotating shaft swing structure of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the first shell in the present utility model.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the second shell in the present invention.

[0023] Figure 7 This is the third partial structural diagram of the rotating shaft swing structure of the present invention.

[0024] Figure 8 This is a structural diagram of the utility model in which the rotating shaft swing structure is in an expanded state. DETAILED DESCRIPTION

[0025] like Figures 1 to 3 As shown, the shaft swing structure of a micro fan described in the present invention includes a first shell 1 and a second shell 2, wherein a shaft 11 is provided on the first shell 1, and an annular groove 111 is provided on the shaft 11. The shaft 11 can be rotatably embedded in the second shell 2, and the annular groove 111 can be rotatably clamped on the shell wall of the second shell 2, and the groove wall of the annular groove 111 is in sliding friction contact with the second shell 2.

[0026] In this pivoting shaft structure, a pivoting shaft 11 with an annular groove 111 is provided on the first housing 1. The pivoting shaft 11 is rotatably embedded in the second housing 2. The annular groove 111 is also rotatably engaged with the wall of the second housing 2, and the wall of the annular groove 111 is in sliding frictional contact with the second housing 2. This eliminates the need for overly delicate structures to achieve the pivoting connection, which not only reduces manufacturing complexity but also improves the structural strength of the pivoting shaft structure, thereby reducing the chance of damage during use and thus extending its service life.

[0027] like Figure 4 As shown, the rotating shaft 11 is a gear shaft, and the second housing 2 is provided with elastic limiting teeth 3, which are elastically engaged with the rotating shaft 11. The elastic engagement of the elastic limiting teeth 3 with the rotating shaft 11 not only facilitates extremely accurate and stable positioning, but also eliminates the need for strong frictional forces for positioning, which helps reduce wear during rotation, thereby achieving long-term stable positioning, preventing the rotating connection from shaking, and thus reducing inconvenience for users.

[0028] like Figure 5 As shown, one end of the rotating shaft 11 is connected to the first shell 1, the annular groove 111 is located on the end of the rotating shaft 11 close to the first shell 1, and a ring tooth portion is provided on the other end of the rotating shaft 11, so that the rotating shaft 11 can better meet the needs of actual use.

[0029] like Figure 5 As shown, a thin convex ring 112 is provided on the first shell 1, and the thin convex ring 112 is arranged around the connection between the rotating shaft 11 and the first shell 1, and the groove wall of the annular groove 111 is abutted against the thin convex ring 112. The thin convex ring 112 is in sliding friction contact with the second shell 2, which is not only conducive to controlling the overall length of the rotating shaft 11, but also makes the sliding friction contact with the second shell 2 have a more reasonable amount, thereby making it more convenient to use.

[0030] like Figure 4 and Figure 7 As shown, the elastic limiting tooth 3 includes a spring portion 31 and at least one convex tooth portion 32. The spring portion 31 is provided on the second housing 2, and the convex tooth portion 32 is provided on the elastic end of the spring portion 31. The convex tooth portion 32 is elastically engaged with the rotating shaft 11 under the elastic action of the spring portion 31. Such an elastic limiting tooth 3 is very simple and reliable, which not only facilitates manufacturing but also provides a very stable elastic engagement effect, thereby helping to further improve the reliability of the rotating shaft swing structure.

[0031] like Figure 7As shown, the elastic member 31 includes a first positioning piece 311 and a first elastic piece 312. The first positioning piece 311 is disposed on the second housing 2, and one end of the first elastic piece 312 is connected to the first positioning piece 311. The protruding tooth portion 32 is disposed on the other end of the first elastic piece 312. Such an elastic member 31 is very simple and reliable, which not only facilitates manufacturing but also enables the elastic member 31 to exert a very good elastic effect, thereby helping to further improve the reliability and applicability of the rotating shaft swing structure.

[0032] like Figure 4 As shown, the elastic piece portion 31 includes a second elastic piece 313 and two second positioning pieces 314. The two second positioning pieces 314 are arranged side by side on the second housing 2. The two ends of the second elastic piece 313 are respectively connected to the two second positioning pieces 314. The protruding tooth portion 32 is arranged in the middle of the second elastic piece 313. This can make the elastic piece portion 31 have a more stable and reliable structure, thereby achieving a more reliable elastic effect, and further helping to further improve the reliability of the rotating shaft swing structure.

[0033] like Figure 4 As shown, the second elastic pieces 313 on both sides of the convex tooth portion 32 are curved in an arc shape in a direction away from the rotating shaft 11. This can make the second elastic pieces 313 have a more reliable elastic effect, thereby further improving the reliability of the rotating shaft swing structure.

[0034] like Figures 1 to 4 、 Figure 6 As shown, the second housing 2 includes a third housing 21 and a fourth housing 22. The third housing 21 and the fourth housing 22 are snap-fitted together. A snap-fitting hole 23 is provided at the snap-fitting portion between the third housing 21 and the fourth housing 22. The snap-fitting hole 23 is snap-fitted to the annular snap-fitting groove 111, and the annular snap-fitting groove 111 is snap-fitted to the third housing 21 and / or the fourth housing 22. By using the snap-fitting third housing 21 and the fourth housing 22, and providing the snap-fitting hole 23 at the snap-fitting portion between the third housing 21 and the fourth housing 22 for snapping into the annular snap-fitting groove 111, the rotating shaft 11 can be conveniently and stably assembled with the second housing 2, thereby improving assembly convenience and reliability.

[0035] like Figure 5 and Figure 8 As shown, the first housing 1 is provided with a storage slot 12, the shaft 11 being located on the wall of the storage slot 12, and the second housing 2 being able to move in and out of the storage slot 12 around the shaft 11. This not only helps to reduce the volume after folding, but also allows the storage slot 12 to provide shielding and protection, making it easier to carry and extending its service life.

[0036] like Figure 8As shown, after the third shell 21 and the fourth shell 22 are buckled together, an installation cavity for hidden installation of related electrical components is formed between the third shell 21 and the fourth shell 22, and a fan blade assembly 10 is provided on the surface of the second shell 2 facing the bottom of the storage groove 12, which can meet the requirements of manufacturing and use.

[0037] like Figures 1 to 5 As shown, two opposing walls of the receiving groove 12 are provided with opposing rotating shafts 11, and both rotating shafts 11 are rotatably mounted on the second housing 2. The use of two rotating shafts 11 can further improve the stability and reliability of the rotating connection, thereby helping to further improve the reliability of the rotating shaft swing structure.

[0038] like Figure 5 As shown, the rotating shaft 11 and the first housing 1 are integrally formed. This not only facilitates batch production but also makes the rotating connection have a higher structural strength, thereby helping to further improve the reliability of the rotating shaft swing structure.

Claims

1. A micro fan shaft swinging structure, characterized in that: The invention comprises a first shell (1) and a second shell (2), wherein a rotating shaft (11) is provided on the first shell (1), an annular groove (111) is provided on the rotating shaft (11), the rotating shaft (11) is rotatably embedded in the second shell (2), and the annular groove (111) is rotatably clamped on the shell wall of the second shell (2), and the groove wall of the annular groove (111) is in sliding frictional contact with the second shell (2); the rotating shaft (11) is a gear shaft, and an elastic limiting tooth (3) is provided on the second shell (2), and the elastic limiting tooth (3) is elastically meshed with the rotating shaft (11).

2. The micro fan shaft swinging structure according to claim 1, characterized in that: The elastic limiting tooth (3) comprises a spring sheet portion (31) and at least one convex tooth portion (32); the spring sheet portion (31) is arranged on the second housing (2); the convex tooth portion (32) is arranged on the elastic end of the spring sheet portion (31), and the convex tooth portion (32) is elastically meshed with the rotating shaft (11) under the elastic action of the spring sheet portion (31).

3. The micro fan shaft swinging structure according to claim 2, characterized in that: The spring sheet portion (31) comprises a first positioning sheet (311) and a first elastic sheet (312); the first positioning sheet (311) is arranged on the second housing (2); one end of the first elastic sheet (312) is connected to the first positioning sheet (311); and the convex tooth portion (32) is arranged on the other end of the first elastic sheet (312).

4. The micro fan shaft swinging structure according to claim 2, characterized in that: The spring sheet portion (31) comprises a second elastic sheet (313) and two second positioning sheets (314), the two second positioning sheets (314) being arranged side by side on the second housing (2), the two ends of the second elastic sheet (313) being respectively connected to the two second positioning sheets (314), and the convex tooth portion (32) being arranged on the middle portion of the second elastic sheet (313).

5. The micro fan shaft swinging structure according to claim 4, characterized in that: The second elastic sheets (313) on both sides of the convex tooth portion (32) are curved in an arc shape in a direction away from the rotating shaft (11).

6. The micro fan shaft swinging structure according to claim 1, characterized in that: The second shell (2) comprises a third shell (21) and a fourth shell (22); the third shell (21) and the fourth shell (22) are buckled together; a mounting hole (23) is provided at the buckling position between the third shell (21) and the fourth shell (22); the mounting hole (23) is buckled on an annular slot (111); and the annular slot (111) is buckled on the third shell (21) and / or the fourth shell (22).

7. The micro fan shaft swinging structure according to claim 1, characterized in that: The first shell (1) is provided with a receiving groove (12), the rotating shaft (11) is located on the groove wall of the receiving groove (12), and the second shell (2) can move in and out of the receiving groove (12) around the rotating shaft (11).

8. The micro fan shaft swinging structure according to claim 7, characterized in that: Two opposite groove walls of the receiving groove (12) are respectively provided with rotating shafts (11) arranged opposite to each other, and the two rotating shafts (11) are both rotatably embedded in the second housing (2).

9. The micro fan shaft swinging structure according to any one of claims 1 to 8, characterized in that: The rotating shaft (11) and the first shell (1) are an integrally formed structure.

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