CN204061814U - A kind of Idle wheel with hermetically sealed dustproof construction - Google Patents
A kind of Idle wheel with hermetically sealed dustproof construction Download PDFInfo
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- CN204061814U CN204061814U CN201420527625.9U CN201420527625U CN204061814U CN 204061814 U CN204061814 U CN 204061814U CN 201420527625 U CN201420527625 U CN 201420527625U CN 204061814 U CN204061814 U CN 204061814U
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Abstract
The utility model relates to a kind of Idle wheel with hermetically sealed dustproof construction, it comprises Idle wheel (1), wheel shaft (2), bearing (6), dust cover (3), bearing (ball) cover (4) and fixed central spindle (5), the outer ring of bearing (6) and Idle wheel (1) endoporus interference fit, the inner ring of bearing (6) and wheel shaft (2) interference fit, Idle wheel (1) endoporus opposite side has annular groove A(9 successively) and annular groove B(10), annular groove A(9) be embedded with circlip for hole (7), dust cover (3) coordinates the side being arranged on Idle wheel (1), fixed central spindle (5) is connected by screw-thread fit from the opposite side of Idle wheel (1) with wheel shaft (2), bearing (ball) cover (4) is sleeved in fixed central spindle (5), bearing (ball) cover (4) is pressed on the inner ring side of bearing (6).The utility model has the advantage of: structure is simple, cost is low, sealability is stable and easy accessibility.
Description
Technical field
The utility model relates to Idle wheel, particularly a kind of Idle wheel with hermetically sealed dustproof construction.
Background technique
Tensioning wheel assembly is generally arranged on place on the lower, position on motor front-end wheel system, operating mode is severe, bearing failure is caused for minimizing dust and mud etc. enter interiors of products, the internal structure of belt pulley is often needed to hide, existing dust cover, most employing sheet material blanking, punching, shaping, flange form, and then strain dust cover by hexagon flange bolt, thus reach dust-proof object.But the dust cover relative complex of this structure, cost are higher, when motor works under the mal-condition such as dust, silt, dust cover dismounting difficulty, and easily cause the anti-dust performance of dust cover to lose efficacy, obviously cannot meet dirt exclusion capabilities requirement, therefore the application of hermetically sealed dustproof construction is imperative.
Model utility content
The purpose of this utility model is the shortcoming overcoming prior art, provides that a kind of structure is simple, cost is low, sealability is stablized and the Idle wheel with hermetically sealed dustproof construction of easy accessibility.
The purpose of this utility model is achieved through the following technical solutions: a kind of Idle wheel with hermetically sealed dustproof construction, it comprises Idle wheel, wheel shaft, bearing, dust cover, bearing (ball) cover and fixed central spindle, Idle wheel endoporus side is provided with ring-shaped step, the outer ring of bearing and Idle wheel endoporus interference fit, and with ring-shaped step close contact, the inner ring of bearing and wheel shaft interference fit, and be arranged at the side close contact of the bearing baffle on wheel shaft, Idle wheel endoporus opposite side has annular groove A and annular groove B successively, annular groove A is embedded with circlip for hole, side, the outer ring close contact of circlip for hole and bearing, dust cover coordinates the side being arranged on Idle wheel, the front end of dust cover is provided with annular protrusion, annular protrusion is fastened in annular groove B, fixed central spindle is connected by screw-thread fit from the opposite side of Idle wheel with wheel shaft, bearing (ball) cover is sleeved in fixed central spindle, bearing (ball) cover is pressed on the inner ring side of bearing.
Described dust cover is the plastic dust lid of molding and forming.
It is Spielpassung between the outer rim of described bearing (ball) cover and ring-shaped step.
The utility model has the following advantages:
1, the hermetically sealed dustproof construction of the utility model is more simple compared with conventional dustproof construction, and dust cover adopts the plastic dust lid of molding and forming, and cost is lower, installs more convenient.
2, bearing (ball) cover, formed totally enclosed cavity between dust cover and Idle wheel endoporus, bearing is arranged in Idle wheel endoporus, completely isolated with the external world, and dust cover is fastened in the annular groove B of Idle wheel inner hole wall, and its good seal performance, performance is more stable.
3, during installation sealing structure, bearing (ball) cover is sleeved in fixed central spindle, the front end wooden mallet of dust cover is knocked in the annular groove B on Idle wheel inner hole wall, just sealing can be realized, when tearing dust cover open, only with bottle opener, dust cover need be levered up, make the front end of dust cover that resiliently deformable occur, depart from annular groove B, its disassembling operations is simple, convenient.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is A place structure for amplifying schematic diagram in Fig. 1;
In figure: 1-Idle wheel, 2-wheel shaft, 3-dust cover, 4-bearing (ball) cover, 5-fixed central spindle, 6-bearing, 7-circlip for hole, 8-bearing baffle, 9-annular groove A, 10-annular groove B, 11-ring-shaped step.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described, but protection domain of the present utility model is not limited to the following stated.
As depicted in figs. 1 and 2, a kind of Idle wheel with hermetically sealed dustproof construction, it comprises Idle wheel 1, wheel shaft 2, bearing 6, dust cover 3, bearing (ball) cover 4 and fixed central spindle 5, Idle wheel 1 endoporus side is provided with ring-shaped step 11, the outer ring of bearing 6 and Idle wheel 1 endoporus interference fit, and with ring-shaped step 11 close contact, the inner ring of bearing 6 and wheel shaft 2 interference fit, and be arranged at the side close contact of the bearing baffle 8 on wheel shaft 2, Idle wheel 1 endoporus opposite side has annular groove A9 and annular groove B10 successively, annular groove A9 is embedded with circlip for hole 7, side, the outer ring close contact of circlip for hole 7 and bearing 6, dust cover 3 coordinates the side being arranged on Idle wheel 1, the front end of dust cover 3 is provided with annular protrusion, annular protrusion is fastened in annular groove B10, fixed central spindle 5 is connected by screw-thread fit from the opposite side of Idle wheel 1 with wheel shaft 2, bearing (ball) cover 4 is sleeved in fixed central spindle 5, bearing (ball) cover 4 is pressed on the inner ring side of bearing 6.
Described dust cover 3 is the plastic dust lid of molding and forming.
Be Spielpassung between the outer rim of described bearing (ball) cover 4 and ring-shaped step 11.
Working procedure of the present utility model is as follows: during assembling, bearing 6 is sleeved on wheel shaft 2, the inner ring of bearing 6 is made to be close on bearing baffle 8, bearing 6 is assemblied in Idle wheel 1 endoporus together with wheel shaft 2, the outer ring of bearing 6 is made to be close on ring-shaped step 11 side, circlip for hole 7 Circlip tongs is snapped in annular groove A9, the outer ring of bearing 6 is completely fixed, bearing (ball) cover 4 is sleeved in fixed central spindle 5, the threaded end of fixed central spindle 5 is screwed in wheel shaft 2, bearing (ball) cover 4 is along with the screw-in of fixed central spindle 5, progressively be pressed on the inner ring of bearing 6, together with the inner ring of bearing baffle 8 rigid bearing 6, wherein, Spielpassung is formed between the outer rim of bearing (ball) cover 4 and ring-shaped step 11, finally with wooden mallet, the front end of dust cover 3 is knocked in annular groove B10.Bearing (ball) cover 4, between dust cover 3 and Idle wheel 1 endoporus, form totally enclosed cavity, bearing 6 is arranged in Idle wheel 1 endoporus, completely isolated with the external world, and dust cover 3 is fastened in the annular groove B10 of Idle wheel 1 inner hole wall, its good seal performance, performance is more stable.
Claims (3)
1. one kind has the Idle wheel of hermetically sealed dustproof construction, it is characterized in that: it comprises Idle wheel (1), wheel shaft (2), bearing (6), dust cover (3), bearing (ball) cover (4) and fixed central spindle (5), Idle wheel (1) endoporus side is provided with ring-shaped step (11), the outer ring of bearing (6) and Idle wheel (1) endoporus interference fit, and with ring-shaped step (11) close contact, the inner ring of bearing (6) and wheel shaft (2) interference fit, and be arranged at the side close contact of the bearing baffle (8) on wheel shaft (2), Idle wheel (1) endoporus opposite side has annular groove A(9 successively) and annular groove B(10), annular groove A(9) be embedded with circlip for hole (7), side, the outer ring close contact of circlip for hole (7) and bearing (6), dust cover (3) coordinates the side being arranged on Idle wheel (1), the front end of dust cover (3) is provided with annular protrusion, annular protrusion is fastened on annular groove B(10) in, fixed central spindle (5) is connected by screw-thread fit from the opposite side of Idle wheel (1) with wheel shaft (2), bearing (ball) cover (4) is sleeved in fixed central spindle (5), bearing (ball) cover (4) is pressed on the inner ring side of bearing (6).
2. a kind of Idle wheel with hermetically sealed dustproof construction according to claim 1, is characterized in that: the plastic dust lid that described dust cover (3) is molding and forming.
3. a kind of Idle wheel with hermetically sealed dustproof construction according to claim 1, is characterized in that: be Spielpassung between the outer rim of described bearing (ball) cover (4) and ring-shaped step (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420527625.9U CN204061814U (en) | 2014-09-15 | 2014-09-15 | A kind of Idle wheel with hermetically sealed dustproof construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420527625.9U CN204061814U (en) | 2014-09-15 | 2014-09-15 | A kind of Idle wheel with hermetically sealed dustproof construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204061814U true CN204061814U (en) | 2014-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420527625.9U Active CN204061814U (en) | 2014-09-15 | 2014-09-15 | A kind of Idle wheel with hermetically sealed dustproof construction |
Country Status (1)
| Country | Link |
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| CN (1) | CN204061814U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343933A (en) * | 2014-09-15 | 2015-02-11 | 成都嘉陵华西光学精密机械有限公司 | Tensioning wheel with fully-sealed dust-proof structure |
| CN105216129A (en) * | 2015-10-30 | 2016-01-06 | 浙江辉弘光电能源有限公司 | A kind of silicon chip cutter pulley structure |
| CN107289088A (en) * | 2016-04-12 | 2017-10-24 | 福特全球技术公司 | The Zona transformans wheel assembly of two-piece type zero with external bearings raceway |
-
2014
- 2014-09-15 CN CN201420527625.9U patent/CN204061814U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343933A (en) * | 2014-09-15 | 2015-02-11 | 成都嘉陵华西光学精密机械有限公司 | Tensioning wheel with fully-sealed dust-proof structure |
| CN105216129A (en) * | 2015-10-30 | 2016-01-06 | 浙江辉弘光电能源有限公司 | A kind of silicon chip cutter pulley structure |
| CN107289088A (en) * | 2016-04-12 | 2017-10-24 | 福特全球技术公司 | The Zona transformans wheel assembly of two-piece type zero with external bearings raceway |
| CN107289088B (en) * | 2016-04-12 | 2021-08-06 | 福特全球技术公司 | Two-piece zero distortion pulley assembly with external bearing raceways |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |