Foldable industrial fan

Abstract

The utility model discloses a foldable industrial fan which comprises a base, a rotating arm, a first elastic ring, a fan body and a second elastic ring. A plurality of first elastic rings are arranged, are clamped between corresponding first connecting parts and first connecting ends of rotating arms, and are in extrusion contact with the first connecting parts and the first connecting ends of the rotating arms; and a plurality of second elastic rings are clamped between the corresponding second connecting parts and the second connecting ends and are in extrusion contact with the second connecting parts and the second connecting ends. The rotation angle of the fan is fixed through the elasticity of the first elastic ring and the second elastic ring, an existing limiting structure is replaced, the structure of the fan is simpler, meanwhile, the elastic rings can effectively prevent external dust and water vapor from entering the fan, and the sealing performance of the fan is better; the interior of the fan is prevented from being damaged, and the service life of the fan is guaranteed.

Description

Technical Field

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

[0002] An electric fan, also known as a fan or blower, is a household appliance that uses an electric motor to rotate blades, accelerating air circulation. It is primarily used for cooling and ventilation. It is widely used in homes, classrooms, offices, shops, hospitals, hotels, and other places, and is also widely used in industry.

[0003] During use, industrial fans require adjustment of their angle based on processing requirements. Therefore, existing fans all employ a rotary adjustment mechanism. To secure the fan at a specific angle, a retaining mechanism is required, further complicating the fan structure. Furthermore, industrial fans operate in complex environments, and the rotary adjustment mechanism's poor sealing performance allows dust and moisture to easily enter the fan. This can damage the fan's internal structure over extended use, shortening its lifespan. Therefore, further improvements to existing fan structures are necessary. Utility Model Content

[0004] In view of this, the present invention aims to address the deficiencies in the prior art, and its main purpose is to provide a foldable industrial fan, which can effectively solve the problems of the existing industrial fans such as complex structure, poor sealing and short service life.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] 18. The fan as claimed in claim 17, wherein the lifting arm is a chain which is connected to the base plate of the second frame member to form a rotation axis toward the left side of the fan frame. The lifting arm is connected to the chain axis direction of the fan frame by a spring which is provided on the first and second frames of the fan frame to move relative to each other. The lifting arm is connected to the chain axis direction of the fan frame by a spring which is provided on the first frame direction of the fan frame.

[0007] As a preferred solution, two first grooves are formed on the first connecting portion and are arranged at intervals in a transverse direction, and the first elastic ring is sleeved in the corresponding first grooves.

[0008] As a preferred solution, the outer end of the first connecting part is integrally provided with a first annular rotating groove recessed inward, and the first connecting end is convexly provided with a first rotating part that cooperates with the first rotating groove. The first connecting end can be rotatably arranged back and forth on the first connecting part through the cooperation between the first rotating part and the first rotating groove.

[0009] As a preferred solution, the rotating arm includes a first shell and a second shell arranged in front and back, and the first shell and the second shell are fixed together by fixing bolts.

[0010] As a preferred solution, the second connecting portion is provided with second grooves arranged at intervals in a transverse direction, and the second elastic ring is sleeved in the corresponding second grooves.

[0011] As a preferred solution, a second annular rotation groove is recessed on the second connecting end; and a second rotation portion that cooperates with the second rotation groove is integrally protruded outwardly on the outer end of the second connecting portion.

[0012] As a preferred solution, the first elastic ring and the second elastic ring are both made of rubber.

[0013] As a preferred solution, the fan body includes a shell and a fan blade assembly arranged inside the shell, and the fan blade assembly is rotatable back and forth in the shell.

[0014] As a preferred solution, a handle is integrally provided on the upper end of the shell.

[0015] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that:

[0016] Multiple first elastic rings are provided, sandwiched between the corresponding first connection portion and the first connection end of the rotating arm, and in press contact therebetween. Multiple second elastic rings are provided, sandwiched between the corresponding second connection portion and the second connection end, and in press contact therebetween. This allows the fan's rotation angle to be fixed through the elasticity of the first and second elastic rings, replacing the existing limiting structure and simplifying the fan structure. The elastic rings also effectively prevent external dust and moisture from entering the fan interior, improving sealing performance and preventing damage to the fan interior, thereby ensuring the fan's service life.

[0017] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a preferred embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the exploded state of a preferred embodiment of the present utility model;

[0020] Figure 3 It is a cross-sectional schematic diagram of a preferred embodiment of the present utility model;

[0021] Figure 4 yes Figure 3 A magnified schematic diagram of point A in the middle;

[0022] Figure 5 yes Figure 3 Enlarged schematic diagram of point B in the middle.

[0023] Description of the accompanying drawings:

[0024] 10. Base 101, first groove

[0025] 102, first rotating groove 11, first connecting portion

[0026] 20. Rotating arm 201. Second rotating groove

[0027] 21. First connecting end 211. First rotating part

[0028] 22. Second connection end 23. First housing

[0029] 24. Second housing 25. Fixing bolts

[0030] 30. First elastic ring 40. Fan body

[0031] 401, second groove 41, second connecting portion

[0032] 411, second rotating part 42, housing

[0033] 421, handle 43, fan blade assembly

[0034] 50. Second elastic ring. DETAILED DESCRIPTION

[0035] Please refer to Figures 1 to 5 , which shows the specific structure of a preferred embodiment of the present invention, including a base 10 , a rotating arm 20 , a first elastic ring 30 , a fan body 40 and a second elastic ring 50 .

[0036] The base 10 has an annular first connecting portion 11 protruding outward on both sides. The base 10 is used to prevent the fan from being powered. In this embodiment, the first connecting portion 11 has two first grooves 101 spaced laterally apart. The outer end of the first connecting portion 11 has an annular first rotation groove 102 recessed inwardly.

[0037] The rotating arm 20 is provided in pairs, each comprising a first connecting end 21 and a second connecting end 22. The first connecting end 21 of each rotating arm 20 is rotatably mounted on the base 10 and disposed outside the first connecting portion 11. The first connecting end 21 of the rotating arm 20 is rotatably connected to the corresponding first connecting portion 11. In this embodiment, the first connecting end 21 is provided with a first rotating portion 211 that engages with the first rotating groove 102. The first connecting end 21 is rotatably mounted on the first connecting portion 21 through the engagement of the first rotating portion 211 with the first rotating groove 102. The rotating arm 20 comprises a first housing 23 and a second housing 24 disposed front and rear. The first and second housings 23 and 24 are secured together by fixing bolts 25. During assembly, the rotating arm 20 can be assembled by splicing and snapping the first and second housings 23 and 24 together, making the assembly process more convenient. The second connecting end 22 is provided with a recessed, annular second rotating groove 201.

[0038] Multiple first elastic rings 30 are provided, sandwiched between the corresponding first connecting portion 11 and the first connecting end 21 of the rotating arm 20, and in compression contact therebetween. The elasticity of the first elastic rings 30 provides a retaining force between the rotating arm 20 and the base 10, allowing for positional positioning at any angle while also enhancing the seal at the connection between the first connecting portion 11 and the first connecting end 21. In this embodiment, the first elastic rings 30 are sleeved within the corresponding first grooves 101. During assembly, the second elastic ring 30 can be first sleeved within the first grooves 101 and then assembled with the first connecting end 21. The first elastic rings 30 are made of rubber.

[0039] The fan body 40 is arranged between the second connection ends 22 of the two rotating arms 20 and is rotatably connected to the second connection ends 22 of the rotating arms 20; the fan body 40 has a second connection portion 41 integrally protruding outward on both sides, and the second connection end 22 is arranged on the outside of the second connection portion 41 and is rotatably connected between the second connection portion 41; in this embodiment, the second connection portion 41 is recessed with second grooves 401 arranged laterally at intervals. The outer end of the second connection portion 41 is integrally protruding outward with a second rotating portion 411 that cooperates with the second rotating groove 201. The fan body 40 can be rotatably arranged on the second connection end 22 through the cooperation of the second rotating portion 411 and the second rotating groove 201. The fan body 40 includes a shell 42 and a fan blade assembly 43 arranged inside the shell 42. The fan blade assembly 43 can be rotatably arranged back and forth in the shell 42. The upper end of the shell 42 is integrally provided with a handle portion 421.

[0040] Multiple second elastic rings 50 are provided, sandwiched between corresponding second connecting portions 41 and second connecting ends 22, creating a compressive contact between the second connecting portions 41 and second connecting ends 22. The elasticity of the second elastic rings 50 provides a retaining force between the fan body 40 and the second connecting end 22, replacing the existing retaining mechanism and simplifying the overall structure. The second elastic rings 50 also prevent external dust and moisture from entering the fan through the connection between the second connecting portion 41 and the second connecting end 22, thereby ensuring the fan's service life. In this embodiment, the second elastic rings 50 are sleeved within corresponding second grooves 401. The second elastic rings 50 are made of rubber.

[0041] The key design features of this utility model are: multiple first elastic rings are provided, each clamped between the corresponding first connecting portion and the first connecting end of the rotating arm, and in press contact therebetween; and multiple second elastic rings are provided, each clamped between the corresponding second connecting portion and the second connecting end, and in press contact therebetween. This allows the fan's rotation angle to be fixed through the elasticity of the first and second elastic rings themselves, replacing the existing limiting structure and simplifying the fan structure. The elastic rings also effectively prevent external dust and moisture from entering the fan interior, improving sealing performance and preventing damage to the fan interior, thereby ensuring the fan's service life.

[0042] 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 foldable industrial fan, characterized by: The cam is connected to the chassis and the chassis has a first end and a second end, and the first end of the cam is connected to the chassis and the chassis has a second end.

2. The foldable industrial fan according to claim 1, characterized in that: The first connecting portion is provided with two first grooves which are arranged at intervals in a transverse direction, and the first elastic ring is sleeved in the corresponding first grooves.

3. The foldable industrial fan according to claim 1, characterized in that: The outer end of the first connecting part is integrally provided with a first annular rotating groove, and the first connecting end is convexly provided with a first rotating part that cooperates with the first rotating groove. The first connecting end can be rotatably arranged on the first connecting part through the cooperation between the first rotating part and the first rotating groove.

4. The foldable industrial fan according to claim 1, characterized in that: The rotating arm includes a first shell and a second shell arranged in front and back, and the first shell and the second shell are fixed together by fixing bolts.

5. The foldable industrial fan according to claim 1, characterized in that: The second connecting portion is provided with second grooves arranged at intervals in a transverse direction, and the second elastic ring is sleeved in the corresponding second grooves.

6. The foldable industrial fan according to claim 1, characterized in that: The second connecting end is concavely provided with a second rotating groove in an annular arrangement; the outer end of the second connecting portion is integrally provided with a second rotating portion protruding outwardly and cooperating with the second rotating groove.

7. The foldable industrial fan according to claim 1, characterized in that: The first elastic ring and the second elastic ring are both made of rubber.

8. The foldable industrial fan according to claim 1, characterized in that: The fan body includes a shell and a fan blade assembly arranged inside the shell. The fan blade assembly is arranged in the shell so as to rotate back and forth.

9. The foldable industrial fan according to claim 8, characterized in that: The upper end of the shell is integrally provided with a handle.

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