CN219176598U

CN219176598U - Fan with good dustproof sealing effect

Info

Publication number: CN219176598U
Application number: CN202223247053.2U
Authority: CN
Inventors: 郑长桥
Original assignee: Guangtai Motor Wujiang Co ltd
Current assignee: Guangtai Motor Wujiang Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-06-13
Anticipated expiration: 2032-12-05

Abstract

The utility model discloses a fan with good dustproof sealing effect, which comprises an outer frame, fan blades, a connecting end cover and an injection upper sheet, wherein a clearance fit structure for rotating protection of the outer frame and the connecting end cover is arranged at the connecting position of the outer frame and the connecting end cover, and a labyrinth type dustproof structure for tightly attaching the outer frame and the injection upper sheet is arranged at the connecting position of the outer frame and the injection upper sheet. According to the utility model, through the clearance fit structure between the connecting end cover and the outer frame, the effect of rotation protection can be achieved, the rotation tightness between the connecting end cover and the outer frame is enhanced, and the labyrinth dustproof structure between the fan blade extending part and the injection upper piece is matched, so that dust can be effectively prevented from entering the bearing system in the connecting end cover, the integral tightness of the fan is improved, and the service effect and service life of the fan under severe environments are improved.

Description

Fan with good dustproof sealing effect

Technical Field

The utility model relates to the technical field of fans, in particular to a fan with a good dustproof sealing effect.

Background

At present, the fan needs to work in some severe environments, for example, in some environments with more sand and dust such as deserts, and when the fan works in the environments with more sand and dust, the sand and dust easily enter the inside of the fan blade to cause the fan blade to be blocked, or enter the bearing system of the fan to cause the damage of the bearing system, so that the use effect and the use storage of the fan are reduced, and the practicability of the fan in the severe environments is reduced.

Disclosure of Invention

The utility model aims to provide a fan with good dustproof sealing effect, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a fan that dust seal is effectual, includes frame, flabellum, connection end cover and package and penetrate the piece, junction position between frame and the connection end cover is provided with the clearance fit structure that is used for both rotatory protection, the junction position between frame and the package are penetrated the piece is provided with the labyrinth dustproof construction that is used for both closely laminating.

Preferably, the clearance fit structure comprises a protruding portion and a recessed portion, the protruding portion is arranged on the connecting end cover, the recessed portion is arranged at the position corresponding to the protruding portion at the top of the inner side of the outer frame, and the protruding portion and the recessed portion are arranged in a penetrating mode.

Preferably, a protruding ring part is arranged at the bottom of the outer wall of the connecting end cover, and the upper surface of the protruding ring part is arc-shaped.

Preferably, the labyrinth dustproof structure comprises a fan blade extending part and a plug-in protruding part, wherein the fan blade extending part is positioned at the position of an inner cavity of the connecting end cover, the plug-in protruding part is arranged on the injection upper sheet, the end part of the fan blade extending part is provided with a bending clamping part, and the bending clamping part is in penetrating clamping connection with the plug-in protruding part.

Preferably, the inserting convex part is two convex rings with different lengths, and the bending clamping part is provided with three bending angles.

The utility model has the technical effects and advantages that:

(1) According to the utility model, through the clearance fit structure between the connecting end cover and the outer frame, the effect of rotation protection can be achieved, the rotation tightness between the connecting end cover and the outer frame is enhanced, and the labyrinth dustproof structure between the fan blade extending part and the injection upper piece is matched, so that dust can be effectively prevented from entering the bearing system in the connecting end cover, the integral tightness of the fan is improved, and the service effect and service life of the fan under severe environments are improved;

(2) According to the utility model, the three bending angles of the bending clamping part are used for inserting and clamping with the two protruding rings with different lengths of the inserting protruding part, so that the contact area between the bending clamping part and the inserting protruding part is increased, and the tightness of connection between the bending clamping part and the inserting protruding part is enhanced.

Drawings

FIG. 1 is a schematic diagram of the front cross-sectional structure of the present utility model.

Fig. 2 is a schematic view of a partial enlarged structure at a of fig. 1 according to the present utility model.

Fig. 3 is a schematic view of a partial enlarged structure at B of fig. 1 according to the present utility model.

In the figure: 1. an outer frame; 2. a fan blade; 3. connecting an end cover; 4. a boss; 5. a recessed portion; 6. a fan blade extension; 7. coating an upper piece; 8. bending the clamping part; 9. the protruding part is inserted.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a fan with good dustproof sealing effect as shown in figures 1-3, which comprises an outer frame 1, fan blades 2, a connecting end cover 3 and an injection upper sheet 7, wherein the fan blades 2, the connecting end cover 3 and the injection upper sheet 7 are relatively fixedly arranged, a clearance fit structure for rotating protection is arranged at the connecting position between the outer frame 1 and the connecting end cover 3, the clearance fit structure is formed by mutually clamping a protruding part 4 extending out of the bottom of the connecting end cover 3 and a concave part 5 arranged at the position corresponding to the protruding part 4 inside the outer frame 1, so that a bent connecting surface is formed between the connecting end cover 3 and the outer frame 1, the effect of rotation protection is achieved, a labyrinth type dustproof structure for tightly attaching the outer frame 1 and the injection upper sheet 7 is arranged at the connecting position, the labyrinth type dustproof structure is formed by clamping a bending clamping part 8 on an inserting protruding part 9 and a fan blade extending part 6 on the injection upper sheet 7, so that a multi-bending angle contact surface is formed between the injection upper sheet 7 and the fan blade extending part 6, and the fan bearing-shaped protection effect of multiple blocking dust entering the outside is achieved, and the dust can enter into a bearing-shaped system of the fan is enhanced, and the bearing-shaped protection effect is improved;

the clearance fit structure comprises a protruding part 4 and a recessed part 5, wherein the protruding part 4 and the recessed part 5 are annular, the protruding part 4 is arranged on the connecting end cover 3, the recessed part 5 is arranged at the position corresponding to the protruding part 4 at the inner side top of the outer frame 1, the protruding part 4 and the recessed part 5 are arranged in an inserted mode, a protruding ring part is arranged at the bottom of the outer wall of the connecting end cover 3, the upper surface of the protruding ring part is arc-shaped, the protruding ring part is equivalent to a retainer ring, the upper surface of the protruding ring part is arc-shaped streamline, a guiding effect can be achieved, and dust is far away from the connecting position between the connecting end cover 3 and the outer frame 1;

the labyrinth dustproof structure comprises a fan blade extending part 6 and an inserting protruding part 9, wherein the fan blade extending part 6 is positioned at the position of an inner cavity of the connecting end cover 3, the inserting protruding part 9 is arranged on the wrapping upper sheet 7, the end part of the fan blade extending part 6 is provided with a bending clamping part 8, the bending clamping part 8 is arranged in an inserting clamping way with the inserting protruding part 9, the inserting protruding part 9 is two protruding rings with different lengths, the bending clamping part 8 is provided with three bending angles, a contact surface with a plurality of bending angles is formed between the two protruding rings with different lengths on the inserting protruding part 9 and the three bending angles on the bending clamping part 8, so that the path of dust entering a bearing system in a fan is prolonged, and meanwhile, the bending surfaces are increased to form multi-layer blocking so as to achieve the effect of improving the sealing performance.

The working principle of the utility model is as follows: according to the fan, through the protruding part 4 at the bottom of the connecting end cover 3 on the fan blade 2, a check ring structure is formed at the bottom of the connecting end cover 3, and the check ring structure is tightly attached to the annular concave part 5 on the inner side of the outer frame 1, so that the connecting end cover 3 is tightly in clearance fit with the outer frame 1, and when the connecting end cover 3 rotates along with the fan blade 2, good rotation protection can be formed between the connecting end cover 3 and the outer frame 1, and dust is prevented from entering from a gap between the outer frame 1 and the connecting end cover 3;

then, the inner fan blade extension part 6 of the connecting end cover 3 is connected with the insertion convex part 9 of the inner side of the wrapping upper sheet 7 in an inserting and clamping way through the bending and clamping part 8 of the inner side, so that the joint between the fan blade extension part 6 and the wrapping upper sheet 7 is subjected to clamping analysis with a plurality of bending parts, the area of a contact surface is increased, a plurality of bending plugging surfaces are formed simultaneously, a good sealing effect is achieved, and external dust can be effectively prevented from entering a bearing system inside the connecting end cover 3.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Standard parts used by the utility model can be purchased from the market, and special-shaped parts can be customized according to the description of the specification and the drawings.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a fan that dust seal is effectual, includes frame (1), flabellum (2), connection end cover (3) and package and penetrate upper plate (7), its characterized in that, junction position between frame (1) and connection end cover (3) is provided with the clearance fit structure that is used for both rotatory protections, the hookup location between frame (1) and package and penetrate upper plate (7) is provided with the labyrinth dustproof construction that is used for both closely laminating.

2. The fan with good dustproof sealing effect according to claim 1, wherein the clearance fit structure comprises a protruding portion (4) and a concave portion (5), the protruding portion (4) is arranged on the connecting end cover (3), the concave portion (5) is arranged at the position, corresponding to the protruding portion (4), of the top of the inner side of the outer frame (1), and the protruding portion (4) and the concave portion (5) are arranged in a penetrating mode.

3. The fan with good dustproof sealing effect according to claim 1, wherein the bottom of the outer wall of the connecting end cover (3) is provided with a protruding ring part, and the upper surface of the protruding ring part is arc-shaped.

4. The fan with good dustproof sealing effect according to claim 1, wherein the labyrinth dustproof structure comprises a fan blade extending part (6) and a plug-in protruding part (9), the fan blade extending part (6) is located at the position of an inner cavity of the connecting end cover (3), the plug-in protruding part (9) is arranged on the injection upper sheet (7), a bending clamping part (8) is arranged at the end part of the fan blade extending part (6), and the bending clamping part (8) is arranged in a penetrating clamping way with the plug-in protruding part (9).

5. The fan with good dustproof sealing effect according to claim 4, wherein the inserting convex part (9) is two convex rings with different lengths, and the bending clamping part (8) is provided with three bending angles.