CN216895658U

CN216895658U - Dustproof idler for engine

Info

Publication number: CN216895658U
Application number: CN202123223731.7U
Authority: CN
Inventors: 翁涛
Original assignee: Shanghai Beixu Automotive Technology Co ltd
Current assignee: Shanghai Beixu Automotive Technology Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-07-05
Anticipated expiration: 2031-12-21

Abstract

The utility model discloses a dustproof idler wheel for an engine, which comprises a belt pulley, a bearing, a front oil seal, a rear oil seal, a front dustproof cover, a rear dustproof cover, an upper cushion block, a lower cushion block, a bolt and a check washer, wherein the belt pulley is provided with a cavity, the front oil seal and the rear oil seal are respectively arranged on two sides of the bearing, the front dustproof cover is arranged on the outer side of the front oil seal, the rear dustproof cover is arranged on the outer side of the rear oil seal, and the upper cushion block and the lower cushion block are positioned through an inner ring of the bearing. The utility model is provided with a belt pulley, a front dustproof cover, a front oil seal, an upper cushion block, a bearing, a rear oil seal, a rear dustproof cover, a lower cushion block, a bolt and a check washer, wherein the oil seals are additionally arranged on two sides of the bearing, a movable sealing structure is formed between the oil seals and the cushion block, meanwhile, a metal dustproof cover is additionally arranged on the outer side of the oil seal, and annular grooves are arranged on the dustproof cover and the dustproof cover to form a labyrinth type dustproof structure, so that two protective barriers are provided for an idler bearing, sealing elements on two sides of the bearing are protected, and the service lives of the bearing and the idler are effectively prolonged.

Description

Dustproof idler for engine

Technical Field

The utility model relates to the technical field of automobiles, in particular to a dustproof idler wheel for an engine.

Background

Along with the development of automobile industry, automobile engine's application field is wider and wider more, and service environment operating mode such as agricultural machinery, engineering machine tool is comparatively abominable, and what idler generally adopted on the engine is the sealed self-lubricating bearing of contact, and when bearing seal suffered to damage, the bearing became invalid, under this background, need develop an excellent idler structure of dustproof construction to it is not fragile to protect bearing seal, and improves idler life, and simultaneously, reduces and maintains the maintenance cost, improves user satisfaction.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a dustproof idle gear for an engine, which solves the above problems.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a dustproof idler for engine, is including belt pulley, bearing, preceding oil blanket, back oil blanket, preceding shield, back shield, goes up cushion, lower cushion, bolt and lock washer that are equipped with the cavity, preceding oil blanket sets up respectively in the both sides of bearing with the back oil blanket, preceding shield sets up in the outside of preceding oil blanket, back shield sets up in the outside of back oil blanket, it passes through the bearing inner circle location with lower cushion to go up cushion, the inner circle of preceding shield is fixed in on the cushion, the inner circle of back shield is fixed in on the cushion, it sets up in one side of preceding shield to go up the cushion, the lower cushion sets up in one side of back shield.

Preferably, the surface of belt pulley is provided with bearing mounting hole, oil blanket mounting hole and shield installation annular slot, and the bearing is the sealed bearing of contact, and simultaneously, the outer lane and the bearing mounting hole interference fit of bearing, preceding oil blanket and back oil blanket all with oil blanket mounting hole interference fit, and preceding shield and back shield and shield installation annular slot cooperation form labyrinth type dustproof construction.

Preferably, the upper cushion block and the lower cushion block are both of a multi-step structure and are provided with central through holes.

Preferably, a dynamic sealing structure is formed between the front oil seal and the rear oil seal as well as the upper cushion block and the lower cushion block.

Preferably, the belt pulley, the bearing, the front oil seal, the rear oil seal, the front dust cover, the rear dust cover, the upper cushion block, the lower cushion block, the bolt and the check washer are coaxial, the idler wheel is installed through the bolt, and one side of the flange face of the bolt is located on one side of the upper cushion block.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model is provided with a belt pulley, a front dustproof cover, a front oil seal, an upper cushion block, a bearing, a rear oil seal, a rear dustproof cover, a lower cushion block, a bolt and a check washer, wherein the oil seals are additionally arranged on two sides of the bearing, a movable sealing structure is formed between the oil seals and the cushion block, meanwhile, a metal dustproof cover is additionally arranged on the outer side of the oil seal, and annular grooves are arranged on the dustproof cover and the dustproof cover to form a labyrinth type dustproof structure, so that two protective barriers are provided for an idler bearing, sealing elements on two sides of the bearing are protected, and the service lives of the bearing and the idler are effectively prolonged.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic cross-sectional view of the present invention;

fig. 4 is a schematic diagram of an explosive structure according to the present invention.

In the figure: a belt pulley 1; a front dust cover 2; a front oil seal 3; an upper cushion block 4; a bearing 5; a rear oil seal 6; a rear dust cover 7; a lower cushion block 8; a bolt 9; a lock washer 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Referring to fig. 1-4, a dustproof idler pulley for an engine comprises a belt pulley 1 with a cavity, a bearing 5, a front oil seal 3, a rear oil seal 6, a front dustproof cover 2, a rear dustproof cover 7, an upper cushion block 4, a lower cushion block 8, a bolt 9 and a check washer 10, wherein the front oil seal 3 and the rear oil seal 6 are respectively arranged at two sides of the bearing 5, the front dustproof cover 2 is arranged at the outer side of the front oil seal 3, the rear dustproof cover 7 is arranged at the outer side of the rear oil seal 6, the upper cushion block 4 and the lower cushion block 8 are positioned through the inner ring of the bearing 5, the inner ring of the front dustproof cover 2 is fixed on the upper cushion block 4, the inner ring of the rear dustproof cover 7 is fixed on the lower cushion block 8, the upper cushion block 4 is arranged at one side of the front dustproof cover 2, the lower cushion block 8 is arranged at one side of the rear dustproof cover 7, oil seals are additionally arranged at two sides of the bearing 5, a dynamic sealing structure is formed between the oil seal and the cushion block, and a metal dustproof cover is additionally arranged at the outer side of the oil seal, the dust cover and the annular groove for mounting the dust cover form a labyrinth type dust-proof structure, so that a two-way protective barrier is provided for the idler bearing 5, sealing pieces on two sides of the bearing 5 are protected, and the service life of the bearing 5 and the idler are effectively prolonged.

The surface of belt pulley 1 is provided with bearing mounting hole, oil blanket mounting hole and shield installation annular slot, and bearing 5 is contact sealed bearing, and simultaneously, bearing 5's outer lane and bearing mounting hole interference fit, preceding oil blanket 3 and back oil blanket 6 all with oil blanket mounting hole interference fit, and preceding shield 2 and back shield 7 and shield installation annular slot cooperation form labyrinth type dustproof construction.

The upper cushion block 4 and the lower cushion block 8 are both of a multi-step structure and are both provided with central through holes.

And dynamic sealing structures are formed between the front oil seal 3 and the rear oil seal 6 and the upper cushion block 4 and the lower cushion block 8.

Belt pulley 1, bearing 5, preceding oil blanket 3, back oil blanket 6, preceding shield 2, back shield 7, go up cushion 4, lower cushion 8, bolt 9 and lock washer 10 are coaxial to install the idler through bolt 9, lock washer 10 is used for locking bolt 9, prevents that each sub-part of idler pine takes off in the transportation, and the flange face one side of bolt 9 is located one side of last cushion 4.

When the device is used, the belt pulley 1, the front dust cover 2, the front oil seal 3, the upper cushion block 4, the bearing 5, the rear oil seal 6, the rear dust cover 7, the lower cushion block 8, the bolt 9 and the check washer 10 are arranged, the oil seals are additionally arranged on two sides of the bearing 5, a dynamic sealing structure is formed between the oil seals and the cushion blocks, meanwhile, the metal dust cover is additionally arranged on the outer side of the oil seal, and the dust cover are provided with annular grooves to form a labyrinth type dust-proof structure, so that two protective barriers are provided for the idler bearing 5, sealing parts on two sides of the bearing 5 are protected, and the service lives of the bearing 5 and an idler are effectively prolonged.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments 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 dustproof idler for engine, is including belt pulley (1), bearing (5), preceding oil blanket (3), back oil blanket (6), preceding shield (2), back shield (7), upper pad (4), lower pad (8), bolt (9) and lock washer (10) that are equipped with the cavity, its characterized in that: preceding oil blanket (3) and back oil blanket (6) set up respectively in the both sides of bearing (5), preceding shield (2) set up in the outside of preceding oil blanket (3), back shield (7) set up in the outside of back oil blanket (6), go up cushion (4) and lower cushion (8) and pass through bearing (5) inner circle location, the inner circle of preceding shield (2) is fixed in on cushion (4), the inner circle of back shield (7) is fixed in down on cushion (8), it sets up in one side of preceding shield (2) to go up cushion (4), cushion (8) set up in one side of back shield (7) down.

2. The dust-proof idler pulley for an engine as claimed in claim 1, wherein: the surface of belt pulley (1) is provided with bearing mounting hole, oil blanket mounting hole and shield installation annular groove, and bearing (5) are contact sealed bearing, and simultaneously, the outer lane and the bearing mounting hole interference fit of bearing (5), preceding oil blanket (3) and back oil blanket (6) all with oil blanket mounting hole interference fit, and preceding shield (2) and back shield (7) and shield installation annular groove cooperation form labyrinth type dust-proof structure.

3. The dust-proof idler pulley for an engine as claimed in claim 1, wherein: the upper cushion block (4) and the lower cushion block (8) are both of a multi-step structure and are provided with central through holes.

4. The dust-proof idler pulley for an engine as claimed in claim 1, wherein: and a dynamic sealing structure is formed between the front oil seal (3) and the rear oil seal (6) and between the upper cushion block (4) and the lower cushion block (8).

5. The dust-proof idler pulley for an engine as claimed in claim 1, wherein: the belt pulley (1), the bearing (5), the front oil seal (3), the rear oil seal (6), the front dust cap (2), the rear dust cap (7), the upper cushion block (4), the lower cushion block (8), the bolt (9) and the anti-loosening washer (10) are coaxial, an idler is installed through the bolt (9), and one side of the flange face of the bolt (9) is located on one side of the upper cushion block (4).