CN2742147Y - Lubricating structure for cam chain guide sheet - Google Patents

Lubricating structure for cam chain guide sheet Download PDF

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Publication number
CN2742147Y
CN2742147Y CN 200420118156 CN200420118156U CN2742147Y CN 2742147 Y CN2742147 Y CN 2742147Y CN 200420118156 CN200420118156 CN 200420118156 CN 200420118156 U CN200420118156 U CN 200420118156U CN 2742147 Y CN2742147 Y CN 2742147Y
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CN
China
Prior art keywords
chain
camshaft
guide sheet
cylinder head
crankcase
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 200420118156
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Chinese (zh)
Inventor
洪国基
李进禄
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Sanyang Industry Co Ltd
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Sanyang Industry Co Ltd
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Publication date
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Priority to CN 200420118156 priority Critical patent/CN2742147Y/en
Application granted granted Critical
Publication of CN2742147Y publication Critical patent/CN2742147Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a lubricating structure for the cam chain guide sheet, which is assembled in a locomotive engine device. The locomotive engine device is sequentially assembled with a cylinder end, a cylinder body, and a crankcase, and a cam axle chain is wound in the locomotive engine device; one side of the cam axle chain is assembled with a chain guide sheet, and the upper side of the chain guide sheet is opened with an oil guide hole that can joint to an oil return hole of the cylinder end. Through the design, the lubrication engine oil in the cylinder end can flow back to the oil guide hole through the oil return hole and can automatically flow downwards to the entire chain guide sheet by self weight through the oil guide hole again, so as to reach the lubricating purpose between the chain guide sheet and the cam axle chain. By the lubricating function, the chain guide sheet can employ the low cost material to manufacture, so as to reduce the cost price.

Description

The lubricating structure of cam chain fairlead
Technical field
A kind of lubricating structure of cam chain fairlead refers to a kind of lubricating structure that is applicable to the cam chain fairlead of locomotive engine device especially.
Background technique
In general locomotive engine device, it includes a cylinder head, a cylinder body and a crankcase, and from top to bottom organize in regular turn each other between its three and establish, simultaneously for to make the power of cylinder head can drive to crankcase, generally in cylinder head, can organize in addition and establish a camshaft sprocket, in crankcase, can organize in addition and establish a timing sprocket, and on camshaft sprocket and timing sprocket again around meshing a camshaft chain.
Above-mentioned camshaft chain is because it is that therefore, the engagement action of camshaft chain need cooperate the switching time of cylinder head valve with the power transmission of the cylinder head media to crankcase, so so the camshaft chain can be called timing chain.
Under the requirement of " timing ", must keep engagement closely between camshaft chain and camshaft sprocket, the timing sprocket, and can not produce the so-called tooth phenomenon of taking off, therefore, traditional practice is to be respectively equipped with a chain tension device and a chain guide sheet in the both sides of camshaft chain, by the tension force effect of chain tension device, make that the camshaft chain can maintenance and the state of camshaft sprocket, timing sprocket tight engagement.
Yet, under said circumstances, keep tight state of contact between camshaft chain and the chain guide sheet, therefore, the camshaft chain is in rotation process, just can and fix to organize between the chain guide sheet of establishing and produce sliding friction, and be to make the loss influence of friction can reduce to minimum, traditional practice only can be strengthened the material of chain guide sheet, for example use the higher industrial plastic of toughness (Nylon 46), but its cost of this kind plastic material is higher, for the manufacturer of a large amount of production locomotives, is not very good.
In addition, also there is manufacturer in crankcase, directly to utilize pump to squeeze into lubricating oil and gives the chain guide sheet, therefore but this kind practice is from lower to upper lubricating oil to be squeezed into, and must increase the strength of pump, and lubricating oil also can't make progress mobile fully and reaches the purpose of perfect lubrication chain guide sheet.
The model utility content
Main purpose of the present utility model provides a kind of lubricating structure of cam chain fairlead, it can borrow the deadweight mode directly to make lubricating oil flow downward to the chain guide sheet by cylinder head, reaching the purpose of perfect lubrication between chain guide sheet and camshaft chain, and therefore can reduce the cost of the employed material of chain guide sheet.
This pass is to realize like this with novel purpose, the lubricating structure of this cam chain fairlead is mounted in the locomotive engine device, and this locomotive engine device includes a cylinder head, one cylinder body, one crankcase, an and camshaft chain, cylinder head group wherein is located at the cylinder body top, crankcase is mounted on the cylinder body below, and cylinder head includes a camshaft sprocket, an and spill port, crankcase includes a timing sprocket, the camshaft chain is then between the timing sprocket around camshaft sprocket that is engaged in cylinder head and crankcase, camshaft chain and be separated into the first relative chain and second chain simultaneously by camshaft sprocket and timing sprocket, so can make camshaft sprocket drive the camshaft chain transmission, and camshaft chain and then drive timing sprocket again and rotate.
In addition, the lubricating structure of cam chain fairlead mainly includes a chain tension device and a chain guide sheet, its the two all be mounted in the above-mentioned locomotive engine device, and the chain tension device is laterally against applying pressure on first chain of camshaft chain, and the chain guide sheet then is to be parallel longitudinal with second chain of camshaft chain and slightly to contact.
Characteristic of the present utility model is that the upper lateral of chain guide sheet offers an oil guiding hole, and this oil guiding hole correspondence is attached to the spill port of cylinder head.By so design, guide the oil guiding hole that the lubricating oil that reclaims can be back to the chain guide sheet via its spill port in the cylinder head, and flow to downwards automatically on the whole chain fairlead in the deadweight mode via oil guiding hole again, so can reach purpose to perfect lubrication between chain guide sheet and camshaft chain.
In addition, by its lubrication that is produced of lubricating oil of guiding recovery in the cylinder head, but the lower material of chain guide sheet user cost is made and can be reduced its cost.
Description of drawings
Fig. 1 is a stereogram of the present utility model.
Fig. 2 is a side view of the present utility model.
Fig. 3 is the enlarged diagram on the utility model chain guide sheet top.
The figure number explanation
1 locomotive engine device, 11 cylinder heads, 111 camshaft sprockets
112 spill ports, 12 cylinder body, 121 positioning holes
13 crankcases, 131 timing sprockets, 132 slots
14 camshaft chains, 141 first chains, 142 second chains
2 chain tension devices, 21 regulators, 3 chain guide sheets
31 oil guiding holes, 32 locating columns, 33 oil guide plates
Embodiment
Your, be described as follows especially exemplified by a preferred embodiment for allowing auditor can more understand technology contents of the present utility model.
Please consult Fig. 1 (stereogram of the present utility model) simultaneously, reach Fig. 2 (side view of the present utility model), the lubricating structure that wherein shows cam chain fairlead of the present utility model is to be mounted in the locomotive engine device 1, and this locomotive engine device 1 includes a cylinder head 11, a cylinder body 12, a crankcase 13 and a camshaft chain 14, wherein cylinder head 11 is mounted on the top of cylinder body 12, and crankcase 13 is mounted on the below of cylinder body 12.
In addition, cylinder head 11 in graphic also includes a camshaft sprocket 111, an and spill port 112, cylinder body 12 also includes a positioning hole 121, crankcase 13 also includes a slot 132, an and timing sprocket 131, camshaft chain 14 then is between the timing sprocket 131 around camshaft sprocket 111 that is engaged in cylinder head 11 and crankcase 13, and camshaft chain 14 also is separated into the first relative chain 141 and second chain 142 by the camshaft sprocket 111 of cylinder head 11 and the timing sprocket 131 of crankcase 13, therefore, the power that engine produced can drive 14 transmissions of camshaft chain via the camshaft sprocket 111 of cylinder head 11, and camshaft chain 14 and then the timing sprocket 131 that drives crankcase 13 again rotate, and so can reach the purpose of locomotive transmission.
In addition, the above-mentioned lubricating structure that is mounted on the cam chain fairlead in the locomotive engine device 1 mainly includes a chain tension device 2 and a chain guide sheet 3, its the two all be mounted in the locomotive engine device 1, and chain tension device 2 wherein is rectangular groove shape and extends downward crankcase 13 by cylinder head 11, simultaneously, the top of chain tension device 2 is hubbed on the cylinder head 11 and towards first chain, 141 rotations of camshaft chain 14, and therefore laterally against applying pressure on first chain 141.In addition by in graphic as can be known, chain tension device 2 still includes a regulator 21, its correspondence is located at the rough middle section position place of chain tension device 2, this regulator 21 laterally pushing tow chain tension device 2 seesaws, and therefore and then adjust the tension force of first chain 141 of camshaft chain 14, make to form engagement closely between camshaft chain 14 and camshaft sprocket 111, the timing sprocket 131, and therefore keep the effect of its timing.
Chain guide sheet 3 in graphic again also is rectangular groove shape and extends downward crankcase 13 by cylinder head 11, and the lower end of this chain guide sheet 3 is inserted in the slot 132 of crankcase 13, simultaneously the top of chain guide sheet 3 and protrude out a locating column 32 it can corresponding be positioned the positioning hole 121 of cylinder body 12 so makes chain guide sheet 3 and second chain 142 of camshaft chain 14 be parallel longitudinal and also slightly contacts.
Please consult Fig. 1, Fig. 2 simultaneously, reach Fig. 3, the wherein clear upper lateral that is shown in chain guide sheet 3 offers an oil guiding hole 31, this oil guiding hole 31 is corresponding to the spill port 112 of cylinder head 11, and chain guide sheet 3 has laterally outwards protruded out an oil guide plate 33 in the lower edge of oil guiding hole 31, and 33 of this oil guide plates are the spill ports 112 that correspondence is attached to cylinder head 11.Therefore, by aforesaid design, guide the lubricating oil that reclaims in the cylinder head 11 and can be back to oil guide plate 33 via spill port 112, flow to oil guiding hole 31 again, afterwards, lubricating oil flow to (shown in Fig. 3 arrow) on the whole chain fairlead 3 via oil guiding hole 31 downwards in the deadweight mode more automatically, so can reach the purpose to chain guide sheet 3 and 14 perfect lubrications of camshaft chain.
In addition, the lubrication effect that directly utilizes cylinder head 11 interior lubricating oils of guiding recovery to be reached in the deadweight mode, also can make chain guide sheet 3 material at lower cost to be made, and need not be considered the sliding friction problem of 14 on chain guide sheet 3 and camshaft chain again, so can effectively reduce the fabricating cost of chain guide sheet 3.
The foregoing description is only given an example for convenience of description, and the interest field that the utility model is advocated should be as the criterion so that claim is described certainly, but not only limits to the foregoing description.

Claims (6)

1. the lubricating structure of a cam chain fairlead, be to be mounted in the locomotive engine device, this locomotive engine device includes a cylinder head, one cylinder body, one crankcase, one camshaft, an and camshaft chain, wherein this cylinder head group is located at this cylinder body top, and camshaft system organizes in being located at cylinder head, this crankcase is mounted on this cylinder body below, and this cylinder head includes a camshaft sprocket, an and spill port, this crankcase includes a timing sprocket, and this camshaft chain ring is around being engaged between this camshaft sprocket and this timing sprocket, and be separated into the first relative chain and second chain by it; Wherein, the lubricating structure of this cam chain fairlead comprises:
One chain tension device is to be mounted in this locomotive engine device, and laterally against applying pressure on first chain of this camshaft chain; And
One chain guide sheet is to be mounted in this locomotive engine device, and is parallel longitudinal and slightly contacting with second chain of this camshaft chain;
It is characterized in that:
The top of this chain guide sheet offers an oil guiding hole, and its correspondence is attached to the spill port of this cylinder head.
2. according to the described cam chain fairlead of claim 1 lubricating structure, it is characterized in that this chain guide sheet is rectangular groove shape and extends downward this crankcase by this cylinder head.
3. the lubricating structure of cam chain fairlead according to claim 2, it is characterized in that, this cylinder body also includes a positioning hole, this crankcase also includes a slot, and the lower end of this chain guide sheet is inserted in this slot, the top of this chain guide sheet has also protruded out a locating column, and its correspondence is positioned this positioning hole.
4. the lubricating structure of cam chain fairlead according to claim 1 is characterized in that, this chain guide sheet also includes an oil guide plate it is laterally outwards to be protruded out and the corresponding spill port that is attached to this cylinder head by this oil guiding hole lower edge.
5. the lubricating structure of cam chain fairlead according to claim 1, it is characterized in that, this chain tension device is rectangular groove shape and extends downward this crankcase by this cylinder head, and the top of this chain tension device is hubbed on this cylinder head and towards first chain rotation of this camshaft chain.
6. the lubricating structure of cam chain fairlead according to claim 5, it is characterized in that, this chain tension device more includes a regulator, it is the rough middle section position place that correspondence is located at this chain tension device, and this chain tension device of the horizontal pushing tow of this regulator seesaws and then adjusts the tension force of first chain of this camshaft chain.
CN 200420118156 2004-11-23 2004-11-23 Lubricating structure for cam chain guide sheet Expired - Fee Related CN2742147Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420118156 CN2742147Y (en) 2004-11-23 2004-11-23 Lubricating structure for cam chain guide sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420118156 CN2742147Y (en) 2004-11-23 2004-11-23 Lubricating structure for cam chain guide sheet

Publications (1)

Publication Number Publication Date
CN2742147Y true CN2742147Y (en) 2005-11-23

Family

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CN 200420118156 Expired - Fee Related CN2742147Y (en) 2004-11-23 2004-11-23 Lubricating structure for cam chain guide sheet

Country Status (1)

Country Link
CN (1) CN2742147Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102562216A (en) * 2010-12-27 2012-07-11 三菱自动车工业株式会社 Lubricating oil supplying structure of cylinder cover
CN104975904A (en) * 2014-04-04 2015-10-14 上海汽车集团股份有限公司 Chain transmission system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102562216A (en) * 2010-12-27 2012-07-11 三菱自动车工业株式会社 Lubricating oil supplying structure of cylinder cover
CN102562216B (en) * 2010-12-27 2015-03-04 三菱自动车工业株式会社 Lubricating oil supplying structure of cylinder cover
CN104975904A (en) * 2014-04-04 2015-10-14 上海汽车集团股份有限公司 Chain transmission system

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20051123

Termination date: 20131123