Noise reduction type plastic fan blade

Abstract

The utility model relates to a noise reduction type plastic fan blade, which belongs to the technical field of plastic fan blades, and comprises a shell, the outer wall of the upper end of the shell is provided with a limiting groove, the side wall of the shell is connected with four fan blades in an annular array manner, the outer wall of one side of each fan blade is provided with sawteeth, and the lower end of the shell is connected with sound absorption cotton. An inserting block is movably connected to the shell, a limiting column is fixedly connected to the lower end of the top of the inserting block, a clamping groove is formed in the outer wall of one side of the lower end of the inserting block, a clamping block mechanism is clamped to the lower end of the inserting block, the clamping block mechanism comprises a shell, a first limiting ring is fixedly connected to the inner wall of one side of the shell, and a first spring is arranged on the inner wall of the first limiting ring; the other end of the first spring is fixedly connected with a clamping block body, and a sliding rod is arranged on the side wall of the lower end of the clamping block body. The utility model solves the problem that a large amount of noise is generated during rotation due to corrosion or damage caused by the influence of the external environment when the existing plastic fan blade is exposed outside and operates for a long time.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic fan blades, in particular to a noise-reducing plastic fan blade. Background Art

[0002] The outdoor unit of the air conditioner is an important part of the air conditioning system. It is usually installed outside the building to dissipate heat. The outdoor unit of the air conditioner generally dissipates heat through the operation of the plastic fan blades installed inside. The plastic fan blade is made of plastic material, which usually has a spiral or blade-shaped design and can be driven by a motor to rotate.

[0003] Currently, since the air conditioner outdoor unit is usually installed in an outdoor environment, the plastic fan blades are exposed to the outside world and are easily corroded or damaged by long-term use, which damages the surface structure of the plastic blades. As a result, they are affected by air resistance during rotation and generate noise. In addition, the connection between the plastic blades and the rotating shaft is worn due to long-term rotational friction, resulting in a large amount of noise at the connection when the plastic blades are in operation. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that the existing plastic fan blades are exposed to the outside and will be corroded or damaged by the external environment after long-term operation, so that a lot of noise will be generated during rotation, and a noise-reducing plastic fan blade is provided.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a noise-reducing plastic fan blade, comprising: a shell, a limiting groove is provided on the outer wall of the upper end of the shell, four fan blades are connected to the side wall of the shell in a circular array, and the outer walls of one side of the four fan blades are provided with serrations, the lower end of the shell is connected to sound-absorbing cotton, the shell is movably connected to a plug block, the lower end of the top of the plug block is fixedly connected to a limiting column, a slot is provided on the outer wall of one side of the lower end of the plug block, and a block mechanism is clamped at the lower end of the plug block.

[0006] As a preferred embodiment, the blocking mechanism includes a shell, a limiting ring 1 is fixedly connected to the inner wall of one side of the shell, a spring 1 is provided on the inner wall of the limiting ring 1, the other end of the spring 1 is fixedly connected to a blocking body, a sliding rod is provided on the lower end side wall of the blocking body, a sliding groove is provided on the inner wall of the shell, a limiting ring 2 is fixedly connected to the bottom of the inner wall of the shell, a spring 2 is provided on the inner wall of the limiting ring 2, and a connecting block is fixedly connected to the upper end of the spring 2.

[0007] As a preferred implementation, the sliding groove provided on the side wall of the shell is slidably connected to the sliding rod provided on the side wall of the block body.

[0008] As a preferred implementation, the card slot formed on the side wall at the lower end of the insert block is card-engaged with the card block body.

[0009] As a preferred implementation, the lower end of the insert block is position-limitedly connected to the upper end of the connecting block.

[0010] As a preferred embodiment, a limiting column provided at the lower end of the top of the insert block is limit-connected with a limiting groove provided on the outer wall of the upper end of the shell.

[0011] As a preferred implementation, the spring 1 is fixedly connected to one side of the inner wall of the shell, and the limiting ring 1 is limitedly connected to the spring 1.

[0012] As a preferred implementation, the second spring is fixedly connected to the bottom of the inner wall of the shell, and the second limiting ring is limitedly connected to the second spring.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. The utility model is designed to provide sound-absorbing cotton at the connection between the plug and the shell, thereby ensuring the effect of reducing wear and sound absorption. Saw teeth are provided on the outer wall of one side of the fan blade to cut the air resistance, avoiding the effect of corrosion, damaging the original structure of the saw teeth, and then being unable to cut the air resistance, increasing the noise;

[0015] 2. By designing a pressing card block body, the card block body is slidably connected with the sliding groove provided on the inner wall of the shell through the sliding rod provided on the side wall, so that the card block body slides smoothly to one end. At this time, the card block body squeezes spring 1, and the limiting column provided at the lower end of the top of the plug block is connected with the limiting groove accordingly, and is inserted into the connecting block provided in the shell through the shell. At this time, the plug block will squeeze spring 2. When the plug block reaches a certain depth, the card block body is loosened, and the card block body is pushed outward by the reaction force of spring 1. At this time, the card block body will be connected with the card groove provided on the side wall of the lower end of the plug block, thereby completing the installation operation of the shell. Otherwise, it can be disassembled, which makes disassembly and installation very convenient and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model provides a structural schematic diagram of a noise reduction plastic fan blade.

[0017] Figure 2 A schematic diagram of the bottom structure of a noise-reducing plastic fan blade provided by the utility model.

[0018] Figure 3 A schematic diagram of the disassembly of the blade structure of a noise-reducing plastic fan blade provided by the utility model.

[0019] Figure 4A schematic diagram of the disassembly of the bottom structure of a fan blade of a noise-reducing plastic fan blade provided by the utility model.

[0020] Figure 5 The utility model provides a schematic diagram of the disassembled cross-section structure of a clamping mechanism of a noise-reducing plastic fan blade.

[0021] Figure 6 The utility model provides a partial cross-sectional disassembled structural schematic diagram of a clamping mechanism of a noise-reducing plastic fan blade.

[0022] Legend:

[0023] 1. Shell; 2. Limiting groove; 3. Fan blade; 4. Sawtooth; 5. Sound-absorbing cotton; 6. Insert block; 7. Limiting column; 8. Card slot; 9. Card block mechanism;

[0024] 91. Shell; 92. Limiting ring 1; 93. Spring 1; 94. Block body; 95. Slide rod; 96. Slide groove; 97. Limiting ring 2; 98. Spring 2; 99. Connecting block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1

[0027] like Figure 1-6 As shown, the utility model provides a technical solution: a noise-reducing plastic fan blade, comprising: a shell 1, a limiting groove 2 is provided on the outer wall of the upper end of the shell 1, four fan blades 3 are connected to the side wall of the shell 1 in a circular array, and the outer walls of one side of the four fan blades 3 are provided with serrations 4, a sound-absorbing cotton 5 is connected to the lower end of the shell 1, and an insert block 6 is movably connected to the shell 1, and a limiting column 7 is fixedly connected to the lower end of the top of the insert block 6, and the limiting column 7 provided at the lower end of the top of the insert block 6 is limitedly connected to the limiting groove 2 provided on the outer wall of the upper end of the shell 1, a clamping groove 8 is provided on the outer wall of one side of the lower end of the insert block 6, and a clamping block mechanism 9 is clamped at the lower end of the insert block 6.

[0028] In this example, due to the design that the air conditioner outdoor unit is usually installed in an outdoor environment, the plastic fan blade is exposed to the outside world, and it is easy to be corroded or damaged by long-term use, so that the surface structure of the plastic blade is damaged, resulting in noise caused by the influence of air resistance during rotation, and the connection between the plastic blade and the rotating shaft is worn due to long-term rotation friction, resulting in a large amount of noise generated at the connection when the plastic blade is running. For this purpose, a shell 1 is provided, wherein the lower end of the shell 1 is provided with sound-absorbing cotton 5, and the upper end outer wall of the shell 1 is provided with a limiting groove 2, and the limiting groove 2 is correspondingly connected to the limiting column 7 provided at the lower end of the plug block 6. When the plug block 6 rotates, the shell 1 is driven to rotate through the limiting column 7. At this time, the connection between the plug block 6 and the shell 1 will be worn due to long-term friction. For this purpose, a sound-absorbing cotton 5 is connected to the bottom of the shell 1 and the connection between the plug block 6. The sound-absorbing cotton 5 can not only play a protective role, but also play a role of sound absorption, which greatly reduces the generation of noise;

[0029] In addition, since the fan blades 3 are subject to corrosion from the external environment, the original structure changes, making it impossible to effectively offset the air resistance generated during rotation, so that the fan blades 3 generate noise during rotation. For this purpose, saw teeth 4 are provided on the side walls of the fan blades 3. The saw teeth 4 can cut the air, greatly reducing the air resistance, and are not easily corroded, greatly reducing the noise that can be generated.

[0030] Example 2

[0031] like Figure 2-6 As shown, the block mechanism 9 includes a shell 91, a limiting ring 92 is fixedly connected to the inner wall of one side of the shell 91, a spring 93 is arranged on the inner wall of the limiting ring 92, the spring 93 is fixedly connected to one side of the inner wall of the shell 91, and the limiting ring 92 is limitedly connected to the spring 93, the other end of the spring 93 is fixedly connected to a block body 94, the slot 8 provided on the side wall of the lower end of the insert block 6 is engaged with the block body 94, a slide bar 95 is arranged on the side wall of the lower end of the block body 94, and the shell 91 A slide groove 96 is provided on the inner wall, and the slide groove 96 provided on the side wall of the shell 91 is slidably connected to the slide rod 95 provided on the side wall of the block body 94. A limiting ring 97 is fixedly connected to the bottom of the inner wall of the shell 91, and a spring 98 is provided on the inner wall of the limiting ring 97. The spring 98 is fixedly connected to the bottom of the inner wall of the shell 91, and the limiting ring 97 is limitedly connected to the spring 98. The upper end of the spring 98 is fixedly connected to a connecting block 99, and the lower end of the plug block 6 is limitedly connected to the upper end of the connecting block 99.

[0032] In this example, due to the design that the plastic blades will produce certain wear when used outdoors for a long time, it is necessary to disassemble and replace them. However, the existing method generally uses bolts to connect them, which makes it very inconvenient to disassemble and install, greatly reducing the work efficiency. For this purpose, a clamping block mechanism 9 is provided, wherein the clamping block mechanism 9 includes a shell 91, a limiting ring 92 is provided on one side of the inner wall of the shell 91, and a spring 93 is connected to one side of the inner wall of the shell 91. The limiting ring 92 limits the spring 93, and the spring 93 is away from the inner wall of the shell 91. A card block body 94 is connected to one side, and the card block body 94 is engaged with the card slot 8 provided on the side wall at the lower end of the plug block 6. When the card block body 94 is squeezed, the card block body 94 will squeeze the spring 1 93, and the sawtooth 4 of the card slot 8 will leave the card block mechanism 9, and the plug block 6 will be affected by the spring 2 98 connected to the bottom of the shell 91 and will be ejected. At this time, the plug block 6 leaves the shell 1, and the shell 1 can be disassembled and replaced. The card block body 94 adopts a C-shaped style, with a groove provided in the middle, and the spring 2 98 runs through the card block body 94. This style will not hinder the effect of the spring 2 98 on the plug block 6. A slide bar 95 is provided on the side wall of the card block body 94, and the slide bar 95 is slidably connected with the slide slot 96 provided on the inner wall of the shell 91, so that the card block body 94 can slide smoothly. One end of the card block body 94 is set as a narrow side, which can limit the card block body 94 and prevent the card block body 94 from moving outside the shell 91.

[0033] Working principle:

[0034] like Figure 1-6 As shown, when the utility model is in use, the block body 94 is pressed, and the block body 94 is slidably connected with the slide groove 96 opened in the inner wall of the shell 91 through the slide rod 95 provided on the side wall, so that the block body 94 slides smoothly to one end. At this time, the block body 94 squeezes the spring 1 93, and the limit column 7 provided at the lower end of the top of the plug block 6 is connected with the limit groove 2 accordingly, and passes through the shell 1 and is inserted into the connecting block 99 provided in the shell 91. At this time, the plug block 6 will squeeze the spring 2 98. When the plug block 6 reaches a certain depth, the block body 94 is loosened, and the block body 94 is pushed outward by the reaction force of the spring 1 93. At this time, the block body 94 will be clamped with the clamping groove 8 opened on the side wall of the lower end of the plug block 6, thereby completing the installation operation of the shell 1. Otherwise, it can be disassembled. In order to avoid the influence of the external environment and the friction damage, which increases the noise, a sound-absorbing cotton 5 is provided at the connection between the plug block 6 and the shell 1 to ensure the effect of reducing wear and sound absorption. A sawtooth 4 is provided on the outer wall of one side of the fan blade 3 to cut the air resistance, thereby avoiding the effects of corrosion, which would damage the original structure of the sawtooth 4 and make it impossible to cut the air resistance, thereby increasing the noise.

[0035] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes and apply them to other fields. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A noise-reducing plastic fan blade, characterized in that: include: A shell (1), wherein a limiting groove (2) is provided on the outer wall of the upper end of the shell (1), four fan blades (3) are connected to the side wall of the shell (1) in an annular array, and saw teeth (4) are provided on the outer walls of one side of the four fan blades (3), and a sound-absorbing cotton (5) is connected to the lower end of the shell (1), and an insert block (6) is movably connected to the shell (1), and a limiting column (7) is fixedly connected to the lower end of the top of the insert block (6), and a clamping groove (8) is provided on the outer wall of one side of the lower end of the insert block (6), and a clamping block mechanism (9) is clamped at the lower end of the insert block (6).

2. A noise reduction plastic fan blade according to claim 1, characterized in that: The clamping block mechanism (9) comprises a shell (91), a limiting ring (92) is fixedly connected to the inner wall of one side of the shell (91), a spring (93) is provided on the inner wall of the limiting ring (92), the other end of the spring (93) is fixedly connected to a clamping block body (94), a sliding rod (95) is provided on the lower side wall of the clamping block body (94), a sliding groove (96) is provided on the inner wall of the shell (91), a limiting ring (97) is fixedly connected to the bottom of the inner wall of the shell (91), a spring (98) is provided on the inner wall of the limiting ring (97), and a connecting block (99) is fixedly connected to the upper end of the spring (98).

3. A noise reduction plastic fan blade according to claim 2, characterized in that: The sliding groove (96) provided on the side wall of the shell (91) is slidably connected to the sliding rod (95) provided on the side wall of the block body (94).

4. The noise reduction plastic fan blade according to claim 2, characterized in that: The clamping groove (8) provided on the side wall at the lower end of the inserting block (6) is clamped with the clamping block body (94).

5. The noise reduction plastic fan blade according to claim 2, characterized in that: The lower end of the insert block (6) is position-limitingly connected to the upper end of the connecting block (99).

6. The noise reduction plastic fan blade according to claim 1, characterized in that: A limiting column (7) provided at the lower end of the top of the insert block (6) is connected to a limiting groove (2) provided on the outer wall of the upper end of the housing (1).

7. The noise reduction plastic fan blade according to claim 2, characterized in that: The spring one (93) is fixedly connected to one side of the inner wall of the housing (91), and the limiting ring one (92) is limitedly connected to the spring one (93).

8. The noise reduction plastic fan blade according to claim 2, characterized in that: The second spring (98) is fixedly connected to the bottom of the inner wall of the housing (91), and the second limiting ring (97) is limitedly connected to the second spring (98).

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