CN103591126A - Engine accessory gear train idler assembly - Google Patents
Engine accessory gear train idler assembly Download PDFInfo
- Publication number
- CN103591126A CN103591126A CN201210288029.5A CN201210288029A CN103591126A CN 103591126 A CN103591126 A CN 103591126A CN 201210288029 A CN201210288029 A CN 201210288029A CN 103591126 A CN103591126 A CN 103591126A
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- China
- Prior art keywords
- inner ring
- bearing
- dust cover
- dust cap
- idle pulley
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Abstract
The invention discloses an engine accessory gear train idler assembly. The engine accessory gear train idler assembly comprises an idler body, a front dust cap and a rear dust cap, the idler body is composed of a bearing and a plastic pulley plastic-covered thereon, the bearing comprises an inner ring and an outer ring, the central position of the front dust cap is provided with a projecting front inner ring, the front inner ring is in interference fit with one side of the inner ring of the bearing, the central position of the rear dust cap is provided with a projecting rear inner ring, the rear inner ring is in interference fit with the other side of the inner ring of the bearing, and the front dust cap and the rear dust cap completely cover two sides of the bearing. The idler body, the front dust cap and the rear dust cap are press-mounted to form an integral body without using a mandrel or installing a bolt to fix, so the engine accessory gear train idler assembly has the advantages of compact structure, good dust resistance, part cost reduction, reduction of the idler assembling process on an engine production line, and improvement of the assembling efficiency.
Description
Technical field
The present invention relates to motor car engine accessory wheel system parts, be specifically related to a kind of engine accessory wheel system idle pulley assembly.
Background technique
Existing engine accessory wheel system is normally comprised of component such as idle pulley body, mandrel, front dust cover, rear dust cover, construction bolts with idle pulley assembly.Before being installed on motor, construction bolt and front dust cover cannot be fixed, must to construction bolt and mandrel on motor, forward and backward dust cover could be pressed on to the front side of bearing inner race by idle pulley assembly is installed, its shortcoming is: part itself is with high costs, and in component transportation process, front dust cover is easily separated with construction bolt, makes the foreign matters such as dust enter bearing inside, pollute bearing, acceleration bearing grease is deteriorated; And intangibly increased the installation procedure on engine line, caused assembling inconvenience.
Summary of the invention
The object of the present invention is to provide compact structure, low cost, high protection against dust, engine accessory wheel system idle pulley assembly that assembling is good.
For solving the problems of the technologies described above, the present invention takes following technological scheme;
An idle pulley assembly, it is comprised of idle pulley body, front dust cover, rear dust cover, idle pulley body by bearing and thereon the plastic plastic tape wheel forming form, be used for changing the direction of belt and the belt contact of associated part.Bearing comprises inner ring and outer ring, the center portion of front dust cover is provided with the front inner ring of a protrusion, one side interference fit of the inner ring of this front inner ring and bearing, the center portion of rear dust cover is provided with the rear inner ring of a protrusion, the opposite side interference fit of the inner ring of this rear inner ring and bearing, described front dust cover and rear dust cover cover the both sides of bearing completely.
Forward and backward dust cover has the inner ring that stretches out its end face, forward and backward dust cover inner ring adopts interference fit with the inner ring of idle pulley body bearing respectively, directly forward and backward dust cover inner ring is fitted in to the both sides, front and back of bearing, and the end of forward and backward dust cover covers the both sides, front and back of bearing completely.
The inner ring interference fit of forward and backward dust cover inner ring and idle pulley body bearing, press-fits into an integral body by idle pulley body and front and back dust cover dexterously, without fixing with mandrel or construction bolt again, and compact structure not only, and reduced the cost of part itself.In transit, front and back dust cover is close to the front and back of bearing all the time, and the bearing of having stopped due to dropping of dust cover, bearing to be caused pollutes.Before technique press-fits employing construction bolt assembling different from the past, dust cover is pacified to the way of bearing front end, press-fits and makes dust cover and bearing snugly tightr, and dust-proof effect is better.Reduced the operation of assembling idle pulley on engine line, assembler can directly be arranged on whole idle pulley assembly on motor, has improved efficiency of assembling simultaneously.
Further, in plastics belt wheel outer ring, inner peripheral surface has been disposed radially two groups of stiffening ribs, be arranged on the bi-side, front and back of plastics belt wheel, and first group of stiffening rib and second group of staggered corresponding setting of stiffening rib, not full symmetric distributes.Conventionally plastics belt wheel go forward after the stiffening rib of both sides be identical symmetrical, the stiffening rib that front and back full symmetric distributes arranges that to make on the disc of whole plastics belt wheel stiffening rib be evenly distributed less, stiffening effect is not good enough.This idle pulley assembly has changed the distribution mode of stiffening rib on plastics belt wheel, and the distribution mode of alternating expression has increased the mean of the stiffening rib on plastics belt wheel inner peripheral surface exponentially, has improved the Rigidity and strength of belt wheel.
Accompanying drawing explanation
Fig. 1 is the combination schematic diagram of idle pulley assembly of the present invention.
Fig. 2 is the saturating sectional structure schematic diagram of the plastics belt wheel of idle pulley body of the present invention.
Fig. 3 is the generalized section of idle pulley assembly of the present invention.
Embodiment
Below in conjunction with drawings and embodiments, the present invention is described in further detail.
Referring to Fig. 1 and Fig. 3, this engine accessory wheel system idle pulley assembly comprises: idle pulley body 1, front dust cover 2, rear dust cover 3, idle pulley body 1 is comprised of bearing 13 and plastic plastics belt wheel 11 thereon, bearing 13 comprises inner ring 14 and outer ring 12, the center portion of front dust cover 2 is provided with the front inner ring 21 of a protrusion, one side interference fit of the inner ring 14 of this front inner ring 21 and bearing, the center portion of rear dust cover 3 is provided with the rear inner ring 31 of a protrusion, the opposite side interference fit of the inner ring 14 of this rear inner ring 31 and bearing, like this, can be directly by front, rear dust cover inner ring is fitted in the both sides, front and back of bearing 13, and front, the end of rear dust cover 3 covers the both sides, front and back of bearing completely.
Adopt said structure, without again, with mandrel or the fixing front and back of construction bolt dust cover, not only reduced the cost of part itself, and effectively protected the bearing of idle pulley, prevent that dust and silt etc. from polluting bearing.Because dust cover and bearing have formed integral body, idle pulley itself can accessiblely rotate, and on engine line, installer is without first assembling idle pulley again, directly by whole idle pulley general assembly to motor.
Referring to Fig. 2 and Fig. 3, inner peripheral surface in plastics belt wheel 11 outer rings has been disposed radially two groups of stiffening ribs, staggered corresponding setting of 4,5 and second groups of stiffening ribs of first group of stiffening rib 6,7, and stiffening rib 6 is arranged between stiffening rib 4,5, by that analogy, and not full symmetric distributes.The stiffening rib of plastics belt wheel adopts the staggered corresponding layout arranging, and has increased the quantity of the stiffening rib on plastics belt wheel inner peripheral surface, has improved the Rigidity and strength of belt wheel.
Claims (2)
1. an engine accessory wheel system idle pulley assembly, comprise idle pulley body (1), front dust cover (2), rear dust cover (3), idle pulley body (1) is comprised of bearing (13) and plastic plastics belt wheel (11) thereon, bearing (13) comprises inner ring (14) and outer ring (12), it is characterized in that, the center portion of front dust cover (2) is provided with the front inner ring (21) of a protrusion, one side interference fit of the inner ring (14) of this front inner ring (21) and bearing, the center portion of rear dust cover (3) is provided with the rear inner ring (31) of a protrusion, the opposite side interference fit of the inner ring (14) of this rear inner ring (31) and bearing, described front dust cover (2) and rear dust cover (3) cover the both sides of bearing completely.
2. engine accessory wheel system idle pulley assembly according to claim 1, it is characterized in that, inner peripheral surface at described plastics belt wheel (11) is radially provided with two groups of stiffening ribs, staggered corresponding setting of first group of stiffening rib (4,5) and second group of stiffening rib (6,7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210288029.5A CN103591126A (en) | 2012-08-14 | 2012-08-14 | Engine accessory gear train idler assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210288029.5A CN103591126A (en) | 2012-08-14 | 2012-08-14 | Engine accessory gear train idler assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103591126A true CN103591126A (en) | 2014-02-19 |
Family
ID=50081389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210288029.5A Pending CN103591126A (en) | 2012-08-14 | 2012-08-14 | Engine accessory gear train idler assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103591126A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120433A (en) * | 2017-04-21 | 2017-09-01 | 邱建华 | The press-roller device and preparation method of a kind of repeatable lubrication |
| CN109812566A (en) * | 2019-03-29 | 2019-05-28 | 重庆长安汽车股份有限公司 | A kind of idle pulley |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004263742A (en) * | 2003-02-28 | 2004-09-24 | Nsk Ltd | Pulley device with built-in rotation detector |
| CN201305106Y (en) * | 2008-11-21 | 2009-09-09 | 拓肯兴业股份有限公司 | A dustproof structure of bicycle guide sprocket |
| CN201651069U (en) * | 2009-11-07 | 2010-11-24 | 浙江蓝翔轴承有限公司 | Dust-proof cap for bearing |
| CN101968107A (en) * | 2010-09-03 | 2011-02-09 | 重庆长安汽车股份有限公司 | Idler assembly of high-sealing engine accessory gear train |
| CN202001567U (en) * | 2011-03-04 | 2011-10-05 | 洪金坤 | Idle wheel for automobile engine |
-
2012
- 2012-08-14 CN CN201210288029.5A patent/CN103591126A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004263742A (en) * | 2003-02-28 | 2004-09-24 | Nsk Ltd | Pulley device with built-in rotation detector |
| CN201305106Y (en) * | 2008-11-21 | 2009-09-09 | 拓肯兴业股份有限公司 | A dustproof structure of bicycle guide sprocket |
| CN201651069U (en) * | 2009-11-07 | 2010-11-24 | 浙江蓝翔轴承有限公司 | Dust-proof cap for bearing |
| CN101968107A (en) * | 2010-09-03 | 2011-02-09 | 重庆长安汽车股份有限公司 | Idler assembly of high-sealing engine accessory gear train |
| CN202001567U (en) * | 2011-03-04 | 2011-10-05 | 洪金坤 | Idle wheel for automobile engine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107120433A (en) * | 2017-04-21 | 2017-09-01 | 邱建华 | The press-roller device and preparation method of a kind of repeatable lubrication |
| CN109812566A (en) * | 2019-03-29 | 2019-05-28 | 重庆长安汽车股份有限公司 | A kind of idle pulley |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140219 |