Fully-sealed dustproof fan support assembly

Abstract

The utility model discloses a full-sealed dustproof fan support assembly which comprises a fan shaft, a fan belt pulley is arranged on the left side of the fan shaft, a rear dustproof cover is arranged in the fan belt pulley, a V-shaped sealing ring is installed on the outer side of the rear dustproof cover in a clamped mode, an elastic check ring for a hole is arranged on the outer side of the V-shaped sealing ring, and the elastic check ring for the hole is arranged on the outer side of the V-shaped sealing ring. A bearing is arranged outside the circlip for the hole, a baffle is arranged on the outer side of the bearing, a bolt is fixedly installed on the outer side of the baffle, and a front dustproof cover is fixedly installed on the outer side of the bolt and located in the middle of the fan belt pulley. According to the fan support assembly of the dustproof structure, the front end and the rear end of the bearing are both fully sealed, the bearing can be effectively protected from being polluted by the external environment, and therefore the service life of the fan support assembly is prolonged; in addition, the fan support assembly is convenient to manufacture, and the maintenance cost of the fan support assembly can be effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a fully sealed dust-proof fan bracket assembly. Background Art

[0002] The fan is a key component in the engine cooling system. The fan is directly or indirectly connected to the fan bracket assembly. If the fan bracket assembly is damaged, the fan cannot work properly, and the engine cooling system will malfunction, resulting in abnormal operation of the engine. The commonly used fan bracket assembly adopts a labyrinth dust-proof structure at the front and rear ends or a fully sealed structure at one end and a labyrinth dust-proof structure at the other end. Under harsh working conditions of dirt and dust, such fan bracket assemblies are prone to damage the seals of the bearings themselves, causing bearing damage and resulting in the failure of the fan bracket assembly. The utility model provides a dust-proof fan bracket assembly with a fully sealed structure at both the front and rear ends of the bearing, which can effectively protect the bearing from external environmental pollution, thereby improving the service life of the fan bracket assembly. Content of the Utility Model

[0003] The purpose of the utility model is to provide a fully sealed dust-proof fan bracket assembly, which has a fully sealed structure, excellent dust-proof effect, protects the bearing inside the fan bracket assembly from external environmental pollution, extends the service life of the bearing, improves the service life of the fan bracket assembly, can reduce the maintenance cost of the fan bracket assembly, and meets the needs of end users.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A fully sealed dust-proof fan bracket assembly, including a fan shaft. A fan pulley is arranged on the left side of the fan shaft. A rear dust cover is arranged inside the fan pulley. A V-shaped sealing ring is snap-fitted and installed on the outer side of the rear dust cover. A hole-type elastic retaining ring is arranged on the outer side of the V-shaped sealing ring. A bearing is arranged on the outside of the hole-type elastic retaining ring. A baffle is arranged on the outside of the bearing. A bolt is fixedly installed on the outside of the baffle. A front dust cover is fixedly installed in the middle of the fan pulley on the outside of the bolt. The bolt passes through the central hole of the baffle and is integrated with the fan shaft, and is locked with the inner ring of the bearing and the rear dust cover at the same time. The hole-type elastic retaining ring is placed in the retaining ring groove of the fan pulley.

[0005] As a preferred solution, the fan shaft includes a positioning step, and the rear dust cover and the inner ring of the bearing are installed on the positioning step. The fan shaft is in transitional fit with the inner ring of the bearing.

[0006] As a preferred solution, the fan shaft is in small clearance fit with the inner hole of the rear dust cover. The fan shaft includes a threaded hole coaxial with the positioning step.

[0007] As a preferred solution, the V-shaped sealing ring is a standard part, and the bearing is a double-row angular contact ball bearing.

[0008] As a preferred solution, the fan pulley has a multi-chamber structure. A bearing mounting seat hole is provided inside the fan pulley, and the outer ring of the bearing is in interference fit with the seat hole.

[0009] As a preferred solution, an annular groove for installing a front dust cover is provided inside the left end of the fan pulley.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. The present utility model provides a dust-proof structure fan bracket assembly with fully sealed front and rear ends of the bearing, which can effectively protect the bearing from external environmental pollution, thereby improving the service life of the fan bracket assembly; in addition, the fan bracket assembly is convenient to manufacture and can effectively reduce the maintenance cost of the fan bracket assembly. Description of the Drawings

[0012] Figure 1 is a three-dimensional schematic diagram of the fully sealed dust-proof fan bracket assembly of the present utility model;

[0013] Figure 2 is a cross-sectional view of the fully sealed dust-proof fan bracket assembly of the present utility model;

[0014] Figure 3 is a top view of the fully sealed dust-proof fan bracket assembly of the present utility model.

[0015] In the figure: 1. Fan shaft; 2. Rear dust cover; 3. V-shaped sealing ring; 4. Hole retaining ring; 5. Bearing; 6. Fan pulley; 7. Baffle; 8. Bolt; 9. Front dust cover. Detailed Embodiments

[0016] 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 only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0017] Please refer to Figures 1-3, The utility model: a fully sealed dust-proof fan bracket assembly, including a fan shaft 1. A fan pulley 6 is arranged on the left side of the fan shaft 1. A rear dust-proof cover 2 is arranged inside the fan pulley 6. A V-shaped sealing ring 3 is snap-fitted and installed on the outer side of the rear dust-proof cover 2. A hole-type elastic retaining ring 4 is arranged on the outer side of the V-shaped sealing ring 3. A bearing 5 is arranged on the outer side of the hole-type elastic retaining ring 4. A baffle 7 is arranged on the outer side of the bearing 5. A bolt 8 is fixedly installed on the outer side of the baffle 7. A front dust-proof cover 9 is fixedly installed in the middle of the fan pulley 6 on the outer side of the bolt 8. The bolt 8 passes through the central hole of the baffle 7 and is integrated with the fan shaft 1, and is locked with the inner ring of the bearing 5 and the rear dust-proof cover 2 at the same time. The hole-type elastic retaining ring 4 is placed in the retaining ring groove of the fan pulley 6.

[0018] The fan shaft 1 includes a positioning step, and the positioning step installs the rear dust-proof cover 2 and the inner ring of the bearing 5. The fan shaft 1 has an interference fit with the inner ring of the bearing 5.

[0019] Through the above technical solution, the fan shaft 1 preferably has an interference fit with the inner ring of the bearing 5, and the fit can also be adjusted according to the bearing 5 clearance.

[0020] The fan shaft 1 has a small clearance fit with the inner hole of the rear dust-proof cover 2. The fan shaft 1 includes a threaded hole coaxial with the positioning step.

[0021] Through the above technical solution, the rear dust-proof cover 2 is preferably made of a metal material, as shown in the figure.

[0022] The V-shaped sealing ring 3 is a standard part, and the bearing 5 is a double-row angular contact ball bearing.

[0023] Through the above technical solution, the bearing 5 can also be a double-row tapered roller bearing or other types of bearings.

[0024] The fan pulley 6 is a multi-chamber structure. A bearing 5 mounting seat hole is arranged inside the fan pulley 6, and the outer ring of the bearing 5 has an interference fit with the seat hole.

[0025] Through the above technical solution, an end face in contact with the V-shaped sealing ring 3 is arranged inside the fan pulley 6. The fan pulley 6 can be a flat pulley or a grooved pulley. As shown in the figure, it is a multi-wedge belt pulley + V-shaped groove. The fan pulley 6 is provided with positioning steps and threaded holes for directly or indirectly connecting the fan.

[0026] An annular groove for installing the front dust-proof cover 9 is arranged inside the left end of the fan pulley 6.

[0027] Through the above technical solution, the front dust-proof cover 9 has an interference fit with the cavity of the fan pulley 6 to form a fully sealed structure at the front end of the fan bracket assembly. The front dust-proof cover 9 is preferably made of a plastic material, and a metal material can also be used. As shown in the figure, it is a plastic dust-proof cover.

[0028] The working principle of the present utility model is as follows: The contact surface between the V-shaped sealing ring 3 and the fan pulley 6 forms an end face sealing structure, that is, a fully sealed structure at the rear end of the fan bracket assembly; since the V-shaped sealing ring 3 is made of rubber, in order to protect the V-shaped sealing ring 3 from being damaged by foreign objects, a rear dust cover 2 is added outside the V-shaped sealing ring 3, and the rear dust cover 2 and the fan pulley 6 form a labyrinth dust-proof structure.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than limiting the protection scope of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present utility model.

Claims

1. A fully sealed dust-proof fan bracket assembly, including a fan shaft (1), characterized in that: A fan pulley (6) is provided on the left side of the fan shaft (1). A rear dust cover (2) is provided inside the fan pulley (6). A V-shaped sealing ring (3) is snap-fitted and installed on the outer side of the rear dust cover (2). A hole-type circlip (4) is provided on the outer side of the V-shaped sealing ring (3). A bearing (5) is provided on the outside of the hole-type circlip (4). A baffle (7) is provided on the outside of the bearing (5). A bolt (8) is fixedly installed on the outside of the baffle (7). A front dust cover (9) is fixedly installed on the outside of the bolt (8) and at the middle part of the fan pulley (6). The bolt (8) passes through the central hole of the baffle (7) and is integrated with the fan shaft (1), and is locked with the inner ring of the bearing (5) and the rear dust cover (2) at the same time. The hole-type circlip (4) is placed in the circlip groove of the fan pulley (6).

2. The fully enclosed dust-proof fan bracket assembly according to claim 1, characterized in that: The fan shaft (1) includes a positioning step, and the positioning step mounts the rear dust cover (2) and the inner ring of the bearing (5). The fan shaft (1) has an interference fit with the inner ring of the bearing (5).

3. A fully sealed dust-proof fan bracket assembly according to claim 1, characterized in that: The fan shaft (1) has a small clearance fit with the inner hole of the rear dust cover (2). The fan shaft (1) includes a threaded hole coaxial with the positioning step.

4. The fully sealed dust-proof fan bracket assembly according to claim 1, characterized in that: The V-shaped sealing ring (3) is a standard part, and the bearing (5) is a double-row angular contact ball bearing.

5. The fully sealed dust-proof fan bracket assembly according to claim 1, characterized in that: The fan pulley (6) has a multi-chamber structure. A bearing (5) mounting seat hole is provided inside the fan pulley (6), and the outer ring of the bearing (5) has an interference fit with the seat hole.

6. The fully sealed dust-proof fan bracket assembly according to claim 1, wherein: An annular groove for mounting the front dust cover (9) is provided inside the left end of the fan pulley (6).

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