CN202266312U - Engine lubricating system - Google Patents

Abstract

The utility model provides an engine lubricating system which can adequately lubricate a crankshaft rotation part on the top wall of a crankshaft box body and other movement parts, can realize the simplicity in installation of a stirring device and can guarantee the reliability. The engine lubricating system comprises a timing transmission device and a stirring device, wherein the timing transmission device comprises a driven gear which is integrated with a cam and a driving gear which is arranged on a crankshaft, and the driven gear is engaged with the driving gear; and the stirring device is a disc-shaped stirring tooth, the outer circumferential edge of one end surface of the stirring tooth is provided with gears which are engaged with the driven gear, and other end surface is provided with a plurality of blades which are deviated from the radial direction.

Description

Engine lubrication system

Technical field

The utility model relates to a kind of motor, more particularly, relates to a kind of lubrication system of small-sized vertically shafted engine.

Background technique

Be used for small-sized vertically shafted engine lubricated on the working machine such as mowing machine; The general splash lubrication form that adopts; Promptly stir oily device through certain; The lubricant oil of crankcase cover bottom splendid attire is splashed in crankcase everywhere, and part forms mist of oil and part transmits with liquid or drop form, reaches in the lubricated crankcase or the purpose of the motion-related parts that communicate with crankcase.In addition; For practicing thrift cost; The crankshaft rotating portion of aforementioned small-sized vertically shafted engine has cancelled bearing, takes to be slidingly matched between bent axle and the crankcase body, and this just needs more lubricant oil that the crankshaft rotating portion that is positioned at the crankcase body roof is lubricated cooling to guarantee the normal rotation of bent axle.The publication number of claimant application before is the disclosed technological scheme of patent documentation of CN102061960A, and it stirs oily device is one discoidly to stir oily tooth, by the driven gear driven rotary on the cam.The problem of its existence is that the blade that stirs oily tooth is radial extension, and it transmits lubricant oil liquid or drop is not enough to lubricate the crankshaft rotating portion of cooling off the crankcase body roof and the proper functioning that possibly influence motor; In addition, stir the mounting bracket of oily tooth and the means of fixation less stable of crankcase cover.

The model utility content

Therefore, the purpose of the utility model provides a kind of crankshaft rotating portion and other moving elements of ability sufficient lubrication crankcase body roof and the engine lubrication system that can realize stirring the easy installation of oily device and guarantee reliability.

According to the utility model; A kind of engine lubrication system is provided; The motor at place has crankcase body, the crankcase cover that links to each other with this crankcase body, is formed at bent axle, crankcase between crankcase body and the crankcase cover, and this crankcase bottom stores the oil that is used for lubricated said motor, offers the oilhole that is communicated with crankcase and bent axle axis hole on the said crankcase body roof; This lubricating structure comprises: correct time transmission device; Comprise and a driven gear of cam one and the actuation gear on the bent axle that this driven gear and bent axle axially are arranged in the crankcase side by side, this driven gear and the engagement of this actuation gear; And stir oily device; This stirs oily device is one discoidly to stir oily tooth; Its axis normal is installed in one in said driven gear axis with being rotated and is fixed on the support of crankcase cover diapire; These outer periphery of stirring an end face of oily tooth are distributed with gear and mesh with said driven gear, and its other end is evenly equipped with the blade of multi-disc Off-Radial.

Because stirring blade on the oily tooth is arranged to depart from and stirs oily tooth radially; Stir oily tooth when rotating with bent axle-cam; The lubricant oil that is stored in crankcase bottom will splash in crankcase everywhere; Part forms mist of oil and is diffused in the crankcase or the space that is connected with crankcase is lubricated the motor moving element; Part is thrown to wider by blade so that directly deliver to the oilhole on the said crankcase body roof with the form of drop or liquid, guarantees the effectively lubricating of bent axle top rotary part.

Further, the said blade that stirs oily tooth is any in straight line shape, the circular-arc or involute shape.

Further; Support in the said engine lubrication system be designed to include stir oily tooth assembly department with this assembly department turn back into 90 the degree the support fixing part; Its main points are that this fixing part is provided with a mounting hole and establishes a positioning hole in addition, and are corresponding with integrally formed installation base and the positioning boss of crankcase cover diapire respectively.Support is fixed on the installation base with bolt through mounting hole; Simultaneously, through positioning hole and cooperating of positioning boss support is carried out spacingly, like this, the requirement on machining accuracy of support fixing part is low, the simple installation of entire bracket, limit effect are good.

Preferentially, the said blade that stirs oily tooth is 21 degree in the angle of its proximal points place Off-Radial.

Description of drawings

To only describe preferred implementation of the present invention in detail according to accompanying drawing below with embodiment's mode, in the accompanying drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the local scheme of installation that stirs oily tooth among Fig. 1;

Fig. 3 is the stereogram that stirs oily tooth among Fig. 1;

Fig. 4 is the mounting bracket stereogram that stirs oily tooth among Fig. 1.

Embodiment

As shown in Figure 1; The crankcase body 1 of motor 110 links to each other with crankcase cover 2 and forms crankcase 4; Cylinder 80, cylinder-head cover 81 are arranged on the crankcase body 1, and cylinder 80 has piston cavity 9 and tappet chamber, and (not shown, the mark coding is all not shown in this explanation accompanying drawing; Down together), the tappet chamber communicates with cylinder-head cover 81.Through the axis hole on crankcase body 1 and the crankcase cover 2 bent axle 3 is housed in the crankcase 4; Bent axle 3 links to each other with connecting rod 8; Be loaded in the piston cavity 9 and with connecting rod 8 reciprocating motion of the pistons and be connected, fuel oil promotes piston in the combustion chambers burn of cylinder 80 and back and forth does work, and then drives bent axles 3 rotations through connecting rod 8.The bottom storage of crankcase 4 is useful on the lubricant oil 42 of lubricating engine 110, and it has pasta 41.Offering the oilhole 11 that is communicated with crankcase 4 and the installation axle hole of bent axle 3 on crankcase body 1 on the roof of crankcase body 1.There is actuation gear 31 bottom of bent axle 3 in crankcase 4, and the driven gear 51 with the cam one axially is equipped with bent axle 3 side by side in the bottom of crankcase 4 on crankcase cover 2, and actuation gear 31 forms the transmission devices in correct time with driven gear 51 engagements.

Like Fig. 1 to shown in Figure 4, a mounting bracket 7, it stirs oily tooth assembly department 71 with support fixing part 72 one and turn back into 90 and spend, and a mounting hole 75 and a positioning hole 74 are arranged on this fixing part 72; One discoid stirs oily device and promptly stirs oily tooth 6; The outer periphery of an one of which end face are distributed with gear 62; Its other end is evenly equipped with the blade 61 of multi-disc Off-Radial, and this stirs oily tooth 6 and stirs oily tooth axle 64 through one and be riveted on stirring on the oily tooth mounting hole 73 on the oily tooth assembly department 71 of stirring of support 7 with being rotated; Be formed with installation base 21 and positioning boss 22 on the diapire of crankcase cover 2; Bolt 76 passes that mounting hole 75 on the support fixing part 72 is connected with installation base 21, positioning hole 74 penetrates positioning boss 22 location; Support 7 is fixed on the diapire of crankcase cover 2 like this, and the axis normal of stirring oily tooth 6 that rotation is installed on the support 7 is in the axis of driven gear 51 and the gear 62 and driven gear 51 engagements of stirring oily tooth 6.

Like this, when motor 110 work, piston drives bent axle 3 rotations, and the actuation gear 31 on the bent axle 3 synchronously drives the driven gear 51 with the cam one.On the one hand, driven gear 51 through one cam drive tappet, rocking arm so that valve is opened and closed.On the other hand; Driven gear 51 drives and is positioned at oily tooth 6 rotations of stirring of crankcase 4 bottoms; The blade 61 that stirs oily tooth 6 is under high speed rotating; The lubricant oil 42 that is stored in crankcase 4 bottoms is splashed or be dispersed as vaporificly, the lubricant oil that splashes can lubricate cam, lower shake-changing arm, speed regulating mechanism, bent axle 3 and the mating face of connecting rod 8 and the mating face of piston and connecting rod 8; Be dispersed as the position that vaporific lubricant oil can arrive cylinder-head cover 81 along the tappet cavity, the surface of contact of lubricated upper rocker arm and tappet and valve; Likewise, the mist of oil junction plane and final that can also arrive crankcase body 1 and bent axle 3 along the oilhole of design on the crankcase body 1 arrives and is located at crankcase body 1 outer surface of cupular part and near the respiratory slot of bent axle 3.Because stirring the blade 61 of oily tooth 6 in the utility model is by the setting of predetermined angle Off-Radial; The lubricant oil 42 that blade 61 the is splashed oilhole 11 on crankcase body 1 roof that to go directly; So, the just lubricant mist just not of the junction plane through this oilhole 11 lubricated crankcase bodys 1 and bent axle 3 also comprises lubricating oil; " exhale " at respiratory slot, under the effect of " suction ", have the rotary part of more lubricating oil 42 through bent axle 3 tops with its lubricating requirement of abundant assurance.

Preferably, the quantity of stirring the blade 61 of oily tooth 6 in the present embodiment is 6 and is the involute shape that the angle beta of proximal points 65 Off-Radials of blade 61 is 21 degree.Certainly; The shape of blade 61 can also be a straight line shape or circular-arc; Its quantity also can be 2 multiple sheet, but as long as blade 61 departs from predetermined angle in proximal points, and lubricant oil 42 just will be thrown in the rotation of stirring oily tooth with the form of flow or big drop and be delivered directly to prespecified range under moving; As be positioned at the oilhole 11 of crankcase body 1 roof, guarantee not only simultaneously but also the sufficient lubrication of the top rotary part of the heavy bent axle 3 of lubricated load away from lubricated pasta 41.

Claims (4)

1. engine lubrication system; This motor has crankcase body, the crankcase cover that links to each other with this crankcase body, is formed at bent axle, crankcase between crankcase body and the crankcase cover; This crankcase bottom stores the oil that is used for lubricated said motor; Offer the oilhole that is communicated with crankcase and bent axle axis hole on the said crankcase body roof, this lubricating structure comprises:

Correct time, transmission device comprised and a driven gear of cam one and the actuation gear on the bent axle that this driven gear and bent axle axially are arranged in the crankcase side by side, this driven gear and the engagement of this actuation gear; And

Stir oily device, it is characterized in that,

It is said that to stir oily device be one discoidly to stir oily tooth; Its axis normal is installed in one in said driven gear axis with being rotated and is fixed on the support of crankcase cover diapire; These outer periphery of stirring an end face of oily tooth are distributed with gear and mesh with said driven gear, and its other end is evenly equipped with the blade of multi-disc Off-Radial;

Like this; Saidly stir oily tooth when rotating with bent axle-cam; The lubricant oil that is stored in crankcase bottom will splash in crankcase everywhere, and simultaneously, parts of lubricating oil is thrown to wider by blade so that directly deliver to the oilhole on the said crankcase roof with the form of drop or liquid.

2. engine lubrication system as claimed in claim 1, blade wherein can be in straight line shape, the circular-arc or involute shape any.

3. engine lubrication system as claimed in claim 1; Wherein said support comprise stir oily tooth assembly department with this assembly department turn back into 90 the degree the support fixing part; This fixing part is established a mounting hole and a positioning hole, and is corresponding with integrally formed installation base and the positioning boss of crankcase cover diapire respectively.

4. according to claim 1 or claim 2 engine lubrication system, blade wherein is 21 degree in the angle of its proximal points place Off-Radial.

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