Exhaust fan aluminum blade with anti-eccentricity structure

Abstract

The utility model relates to the technical field of exhaust fan aluminum blade devices, in particular to an exhaust fan aluminum blade with an anti-eccentricity structure, which comprises an exhaust fan, and the output end of the exhaust fan is connected with the middle of the anti-eccentricity structure in a sleeved mode. The anti-eccentricity structure comprises an outer cylinder, an anti-eccentricity assembly arranged in the outer cylinder and a transmission rod arranged in the middle of the anti-eccentricity assembly, multiple sets of debugging holes are formed in the outer side of the outer cylinder, the anti-eccentricity assembly comprises a hollow debugging cylinder and a middle table arranged in the debugging cylinder, and a bevel gear drives a tooth structure-rotating disc at the top end to rotate; a threaded groove structure is formed in the top end of the rotating disc, so that a sliding table structure-contact table structure in contact with the threaded groove can linearly move towards the middle of the transmission rod along a sliding groove, and the position of the transmission rod in the middle is adjusted through the contact table; therefore, it can be guaranteed that the transmission rod in the middle is kept in the middle, and the effects of eccentricity prevention and adjustment after eccentricity are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust fan aluminum blade devices, and particularly relates to an exhaust fan aluminum blade with an anti-eccentric structure. Background Art

[0002] An exhaust fan drives the impeller to rotate by an electric motor to drive the air flow. By using air convection, the inside can be kept in a negative pressure state all the time, forming a suction force, continuously sucking the air inside, and discharging the stuffy air inside, so as to achieve the air exchange between the inside and the outside, which is a kind of air conditioning electrical appliance.

[0003] Since most of the existing exhaust fan structures are fixed to the mounting bracket through a transmission rod, after long-term use, the blades may shift in one direction, resulting in the phenomenon of shifting from the position of the mounting bracket, that is, the eccentric phenomenon. After long-term use, the problem of increasing blade offset will occur, which may further affect its normal use. Content of the Utility Model

[0004] Technical Problem to be Solved

[0005] In view of the above-mentioned disadvantages of the prior art, the utility model provides an exhaust fan aluminum blade with an anti-eccentric structure, which can effectively solve the problem that the eccentric phenomenon of the blade in the prior art will cause the blade offset to become larger and larger after long-term use, and may further affect its normal use.

[0006] Technical Solution

[0007] To achieve the above object, the utility model is realized through the following technical solutions:

[0008] The utility model provides an exhaust fan aluminum blade with an anti-eccentric structure, including an exhaust fan. The output end of the exhaust fan is sleeved and connected to the middle part of the anti-eccentric structure. The anti-eccentric structure includes an outer cylinder, an anti-eccentric component arranged inside the outer cylinder, and a transmission rod arranged in the middle of the anti-eccentric component. A plurality of debugging holes are opened on the outer side of the outer cylinder. The anti-eccentric component includes a hollow debugging cylinder and an intermediate table arranged inside the debugging cylinder. Chutes are opened on the outer side of the top end of the debugging cylinder. A positioning hole is opened in the middle of the debugging cylinder. The anti-eccentric component includes a rotating disc, a rotating block arranged at the top end of the rotating disc, a rotating cylinder arranged at the bottom end of the rotating disc, and a bevel gear arranged inside the rotating cylinder. A threaded groove is opened at the top end of the rotating disc. A tooth structure is fixed at the bottom end of the rotating disc. The tooth structure is kept meshed with the bevel gear. And the rotating cylinder is arranged in the positioning hole. The rotating block includes a contact table, a sliding table arranged at the bottom end of the contact table, and a rotating tooth plate arranged at the bottom end of the sliding table. The rotating tooth plate is arranged in the threaded groove at the top end of the rotating disc.

[0009] Further, the bottom end of the transmission rod is in driving connection with the output end of the exhaust fan.

[0010] Further, the cross-section of the sliding groove is a cross-shaped structure, the sliding table is a cross structure, and the sliding table is arranged in the sliding groove.

[0011] Further, a slotted hole structure in a certain direction is formed on the outer side of the rotating cylinder.

[0012] Further, the contact table, the sliding table and the rotating toothed plate are fixedly connected by locking bolts.

[0013] Further, the rotating disk is fixed to the top end of the middle table.

[0014] Beneficial effects

[0015] The technical solution provided by the present utility model has the following beneficial effects compared with the known public technology:

[0016] With the anti-eccentric structure provided by the present utility model, during use, the anti-eccentric component structure inside it can limit the transmission rod. When an offset occurs, the outer side of the transmission rod can contact the outer side of the contact table, generating a sound, thereby reminding the user that adjustment is needed. During adjustment, a tool can pass through the debugging hole - positioning hole and contact the slotted hole structure on the outer side of the rotating cylinder, and rotate to drive the bevel gear at the front end to rotate. The bevel gear drives the toothed structure - rotating disk at the top to rotate. Since a threaded groove structure is formed at the top of the rotating disk, the sliding table structure - contact table structure in contact with the threaded groove can linearly move along the sliding groove towards the middle of the transmission rod, and the position of the transmission rod in the middle is adjusted through the contact table. Since the three rotating blocks move simultaneously, the position of the transmission rod in the middle can be ensured to be in the middle, achieving the effects of anti-eccentricity and post-eccentricity adjustment. Brief description of the drawings

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a structural schematic diagram of the present utility model;

[0019] Figure 2 It is a structural exploded view of the present utility model;

[0020] Figure 3 It is a structural exploded view of the anti-eccentric structure in the present utility model;

[0021] Figure 4 This is the structural decomposition diagram of the anti-eccentric component in the present utility model;

[0022] Figure 5 This is the schematic structural decomposition diagram of the rotating block and the rotating disk in the present utility model.

[0023] The reference numerals in the figure respectively represent: 1, exhaust fan; 2, anti-eccentric structure; 21, outer cylinder; 211, debugging hole; 22, anti-eccentric component; 221, debugging cylinder; 222, intermediate platform; 223, chute; 224, positioning hole; 225, rotating disk; 226, rotating block; 2261, contact platform; 2262, sliding platform; 2263, rotating tooth plate; 227, rotating cylinder; 228, tooth structure; 229, bevel gear; 23, transmission rod. Specific embodiments

[0024] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] The present utility model will be further described below with reference to the embodiments.

[0026] Embodiment: An aluminum blade of an exhaust fan with an anti-eccentric structure, referring to the attached Figure 1 - attached Figure 5, including an exhaust fan 1, the output end of the exhaust fan 1 is sleeved and connected to the middle of the anti-eccentricity structure 2. The anti-eccentricity structure 2 includes an outer cylinder 21, an anti-eccentricity component 22 arranged inside the outer cylinder 21, and a transmission rod 23 arranged in the middle of the anti-eccentricity component 22. A plurality of debugging holes 211 are opened on the outer side of the outer cylinder 21. The anti-eccentricity component 22 includes a hollow debugging cylinder 221 and an intermediate platform 222 arranged inside the debugging cylinder 221. Sliding grooves 223 are opened on the outer side of the top end of the debugging cylinder 221. A positioning hole 224 is opened in the middle of the debugging cylinder 221. The anti-eccentricity component 22 includes a rotating disk 225, a rotating block 226 arranged at the top end of the rotating disk 225, a rotating cylinder 227 arranged at the bottom end of the rotating disk 225, and a bevel gear 229 arranged inside the rotating cylinder 227. A threaded groove is opened at the top end of the rotating disk 225. A tooth structure 228 is fixed at the bottom end of the rotating disk 225. The tooth structure 228 is kept meshed with the bevel gear 229, and the rotating cylinder 227 is arranged in the positioning hole 224. The rotating block 226 includes a contact platform 2261, a sliding platform 2262 arranged at the bottom end of the contact platform 2261, and a rotating tooth plate 2263 arranged at the bottom end of the sliding platform 2262. The rotating tooth plate 2263 is arranged in the threaded groove at the top end of the rotating disk 225; through the arranged anti-eccentricity structure 2, during use, the anti-eccentricity component 22 structure inside it can limit the transmission rod 23. When an offset occurs, the outer side of the transmission rod 23 can contact the outer side of the contact platform 2261, generating a sound, thereby reminding the user that adjustment is needed. During adjustment, a tool can pass through the debugging hole 211 - positioning hole 224, contact the directional slot structure on the outer side of the rotating cylinder 227, and rotate, driving the bevel gear 229 at the front end to rotate. The bevel gear 229 drives the tooth structure 228 - rotating disk 225 at the top end to rotate. And due to the threaded groove structure opened at the top end of the rotating disk 225, the sliding platform 2262 structure - contact platform 2261 structure in contact with the threaded groove can linearly move along the sliding groove 223 towards the middle of the transmission rod 23, adjusting the position of the transmission rod 23 in the middle through the contact platform 2261. Since the three rotating blocks 226 move simultaneously, the position of the transmission rod 23 in the middle can be ensured to be in the middle, achieving the effects of anti-eccentricity and adjustment after eccentricity.

[0027] And the bottom end of the transmission rod 23 is in transmission connection with the output end of the exhaust fan 1; the cross-section of the sliding groove 223 is a cross-shaped structure, the sliding platform 2262 is a cross structure, and the sliding platform 2262 is arranged in the sliding groove 223; a directional slot structure is opened on the outer side of the rotating cylinder 227; the contact platform 2261, the sliding platform 2262, and the rotating tooth plate 2263 are fixedly connected through locking bolts; the rotating disk 225 is fixed at the top end of the intermediate platform 222.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An exhaust fan aluminum blade with an anti-eccentric structure, characterized in that, It includes an exhaust fan (1), the output end of the exhaust fan (1) is sleeved and connected to the middle part of the anti-eccentric structure (2), the anti-eccentric structure (2) includes an outer cylinder (21), an anti-eccentric component (22) arranged inside the outer cylinder (21), and a transmission rod (23) arranged in the middle of the anti-eccentric component (22). A plurality of debugging holes (211) are opened on the outer side of the outer cylinder (21). The anti-eccentric component (22) includes a hollow debugging cylinder (221) and an intermediate table (222) arranged inside the debugging cylinder (221). Sliding grooves (223) are opened on the outer sides of the top ends of the debugging cylinder (221). A positioning hole (224) is opened in the middle of the debugging cylinder (221). The anti-eccentric component (22) includes a rotating disk (225), a rotating block (226) arranged at the top end of the rotating disk (225), a rotating cylinder (227) arranged at the bottom end of the rotating disk (225), and a bevel gear (229) arranged inside the rotating cylinder (227). A threaded groove is opened at the top end of the rotating disk (225), and a tooth structure (228) is fixed at the bottom end of the rotating disk (225). The tooth structure (228) is kept meshed with the bevel gear (229), and the rotating cylinder (227) is arranged in the positioning hole (224). The rotating block (226) includes a contact table (2261), a sliding table (2262) arranged at the bottom end of the contact table (2261), and a rotating tooth plate (2263) arranged at the bottom end of the sliding table (2262). The rotating tooth plate (2263) is arranged in the threaded groove at the top end of the rotating disk (225).

2. The aluminum blade of an exhaust fan with an anti-eccentric structure according to claim 1, characterized in that, The bottom end of the transmission rod (23) is in transmission connection with the output end of the exhaust fan (1).

3. The aluminum blade of an exhaust fan with an anti-eccentric structure according to claim 1, characterized in that, The cross-section of the sliding groove (223) is a cross-shaped structure, the sliding table (2262) is a cross structure, and the sliding table (2262) is arranged in the sliding groove (223).

4. A exhaust fan aluminum blade with an anti-eccentric structure according to claim 1, characterized in that, A directional slot structure is opened on the outer side of the rotating cylinder (227).

5. The aluminum blade of the exhaust fan with an anti-eccentric structure according to claim 4, characterized in that, The contact table (2261), the sliding table (2262), and the rotating tooth plate (2263) are fixedly connected by locking bolts.

6. The aluminum blade of an exhaust fan with an anti-eccentric structure according to claim 1, characterized in that, The rotating disk (225) is fixed to the top end of the intermediate table (222).

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