CN100357601C

CN100357601C - Air compressor

Info

Publication number: CN100357601C
Application number: CNB2005100511277A
Authority: CN
Inventors: 姜大植
Original assignee: REWSUNG ENTERPRISE CO Ltd
Current assignee: REWSUNG ENTERPRISE CO Ltd
Priority date: 2004-02-27
Filing date: 2005-02-28
Publication date: 2007-12-26
Anticipated expiration: 2025-02-28
Also published as: CN1661236A; JP3997233B2; JP2005240803A; KR100446947B1

Abstract

An air compressor comprises a crankshaft movably mounted in a crank chamber of a crankcase; a clutch housing axially combined to a horizontal part of the rear of a front end part exposed toward the front of the crankshaft; a ring leaf spring push rod axially combined to a slant part of the middle of the front end part of the crankshaft; a fastening member fastening to a spiral part of the front of the front end part of the crankshaft to axially fasten the ring leaf spring push rod to the crankshaft; a ring leaf spring mounted between the inside of the clutch housing and the rear of a flange part of the ring leaf spring push rod; a driving gear axially combined to a front end part of the ring leaf sprig push rod; a clutch mounted to a receiving space between the outer peripheral surface side of a shaft tube part of the driving gear and the inner peripheral surface of the clutch housing; a pump piston mounted in a pump chamber orthogonal to the crank chamber; a connecting rod having one end combined to the crankshaft and the other end axially combined to the pump piston; and an air cylinder installed to the rear of the crank chamber to retreat the crankshaft.

Description

Air compressor

Technical field

The present invention relates to a kind ofly be used to supply with compressed-air actuated so that store the air compressor that pressure in the air tank of various Pneumatic actuator (gas-pressure component) compressed and supplied air always remains on setting pressure, more specifically, relate to a kind of like this air compressor, when the pressure in the air tank surpasses setting value, stop compressed-air actuated supply action, and when pressure is equal to or less than setting value, restart compressed-air actuated supply action.

Background technique

Usually, in large vehicles such as passenger vehicle or truck or trailer, be mounted with and utilize the pneumatic brake that compressed-air actuated pressure brakes or the Pneumatic actuator such as air-break switch device of switch door automatically, be supplied to air compressor that the pressurized air of this Pneumatic actuator moves by the power by motor and supply with and store to air tank and provide.Therefore, the pressurized air in the air tank must be stored as and can always keep suitable pressure.

Fig. 1 is the figure that an example of the traditional air compressor that carries out this action is shown.In this air compressor, the power of motor passes to the bent axle 2 in the crankcase 1 that is arranged on the described motor by the actuation gear 3 with the engagement of timing gear (not shown), piston when this crankshaft rotating in the pump chamber 4 and its interlock, thereby pressurized air is passed through exhaust port 6, be supplied in the air tank 5 and store, above-mentioned action is carried out continuously, when the pressure in the described air tank is higher than setting pressure, the part of this pressure passes to emptier 6 by regulator 7 with signal pressure, make this emptier start, thereby interrupt the supply of pressurized air to described air tank, air compressor just dallies, owing to be stored in that pressurized air in the aforementioned air tank is used during step-down, described emptier carries out contrary start, thereby makes pressurized air supply with to air tank again when pressure.

But, the problem of this air compressor is, at pressurized air because the start of emptier 6 and not when air tank 5 is supplied with, this air compressor is continuing spinning still, so can cause the lasting consumption of engine power, thereby the idle running of air compressor causes the loss of fuel to increase, and this acts counter to the fuel consumption that will improve vehicle.

In addition, obviously, along with the to-and-fro motion of bent axle 2 and piston continues to carry out, owing to when frictional heat causes the cylinder interior temperature to rise, the consumption that is supplied to the machine oil in the crankcase is increased; And owing to contain with the high temperature of the proportional a large amount of pollutants of increase of consumption and discharge gas, also can cause atmosphere and the pollution of machine on every side, produce noise and water rate is increased, and problems such as will shorten the working life of air compressor greatly.

Therefore, the applicant makes invention and has proposed at first to file (korean patent application 2003-101314 number) in order to address the above problem, wherein, pressure in air tank is higher than setting pressure, and its signal pressure only has actuation gear in idle running when passing to emptier, and bent axle and piston are failure to actuate, thereby stop compressed-air actuated supply action, when pressure reduced, described bent axle and piston moved again and supply with pressurized air.

Sectional drawing when the sectional drawing when Fig. 2 (a) is in fallback state for the bent axle in the air compressor that described invention in first to file is shown, Fig. 2 (b) are in forward travel state for bent axle in this air compressor is shown.Be somebody's turn to do air compressor in the invention of first to file, shown in Fig. 2 (a), the bent axle 120 that is installed in the crankcase 110 is then retired moving by the spring-back force of annular leaf spring 150, thereby form under the integrated state at steel annular slab between clutch outer member 130 and actuation gear 160 171 and friction annular slab 172 mutual fluid-tight engagement, promptly, under clutch 170 makes described actuation gear and state that clutch outer member is connected, when motor 100 runnings, its power is through being passed to bent axle with the described actuation gear of the timing gear (not shown) engagement of motor and clutch by clutch outer member, make this crankshaft rotating, thereby the pump piston in pump chamber 190 191 makes pressurized air discharge and be sent in the air tank 600 and store by exhaust port 195 by the 192 reciprocating whiles of connecting rod.This action is carried out continuously.When the compressed-air actuated pressure of storing in the described air tank was higher than setting pressure, a compressed-air actuated part flowed in the cylinder 180 by covering 181 inflow entrance 182 through regulator 611 with signal pressure.When the signal pressure that flows into than making bent axle 120 retreat the spring-back force of mobile annular leaf spring 150 when big, march forward with regard to pushing piston 183.Shown in Fig. 2 (b), since bent axle forward so that the pushing clutch outer member 130, make described annular leaf spring be compressed, and it is lax with the steel annular slab 171 and the fluid-tight engagement state between the friction annular slab 172 of the mutual fluid-tight engagement of incorporate state, along with forming each other at interval, thereby because the connection by clutch 170 is disengaged between actuation gear 160 and the clutch outer member 130, even make that described actuation gear still rotates by the power of motor 100, but its rotating force can not be passed to bent axle 120, and described actuation gear is only arranged in idle running.

So, air compressor is failure to actuate, so the compressed-air actuated supply to air tank 600 is stopped, certainly can prevent that pressure from unnecessarily rising, and can also prevent the power loss of motor 100, and, obviously certainly significantly reduce the consumption of fuel and machine oil, when being very beneficial for improving the fuel consumption of vehicle, can reduce water rate, suppress the shortening in life-span, reduce inner frictional heat, and reduce the temperature of exhausting air, but also have the effects such as pollution of minimizing atmosphere and periphery because do not discharge high temperature air.

But, for this air compressor (korean patent application 2003-101314 number) in the invention of first to file, when bent axle 120 advances, for example, even actuation gear 160 is only arranged under the situation of idle running, because the spring-back force of thrust load that produces when described bent axle advances and the annular leaf spring 150 that compressed by the clutch outer member after advancing 130 is applied on the annular slab dumb iron 140, make the surface of contact between described actuation gear and the annular slab dumb iron be maintained the state that very closely engages, even thereby be plugged with lining betwixt, also can continue to rub at its surface of contact place, thereby be easy to produce abrasion, can cause the lost of life of described lining and even actuation gear and annular slab dumb iron certainly.Therefore, for example, compare with the air compressor of Fig. 1 that idle running takes place till bent axle, though do not have so greatly on the degree, the consumption of power loss, fuel and machine oil also can increase, so also there are the problems such as improvement that are unfavorable for fuel consumption.

In addition, between the front of the inwall 101 of motor 100 and actuation gear 160, thrust bearing 200 is installed, though decay has taken place in the thrust load that produces when bent axle 120 is advanced, but be the installing space of guaranteeing thrust bearing on its structure, the annular slab dumb iron 140 of tubulose just must form longlyer relatively, and, more owing to each parts that rotate being installed in the periphery of described bent axle, so even exist the processing of this annular slab dumb iron and the very difficult complicated very small error of assembly operation also can produce problems such as bigger vibration and noise.

Summary of the invention

The present invention proposes in view of the above problems, and purpose is to provide the abrasion and the lost of life that can prevent actuation gear and annular slab dumb iron, and can also make the minimized air compressor of consumption of fuel and machine oil.

And, the object of the present invention is to provide the processing that can make the annular slab dumb iron and assembly operation very simple and easily, and be difficult to be out of shape and the air compressor of cracking etc.

To achieve these goals, according to air compressor of the present invention, it is characterized in that, pressure in air tank is higher than setting pressure and after signal pressure transmitted, the action of bent axle and piston stops, and when actuation gear dallies under the interrupted state of compressed-air actuated supply, the friction with the annular slab dumb iron does not take place, simultaneously, advance at bent axle thrust load takes place when mobile hardly.Between the clutch outer member of this air compressor and described actuation gear, be plugged with the annular slab dumb iron, wherein in this clutch outer member, accommodate will be with the engagement of the timing gear of motor the driving force of the actuation gear of rotation to bent axle transmission or the clutch that cuts off this transmission, make the driving force of actuation gear pass through clutch outer member and be passed to bent axle by annular slab dumb iron and clutch, when actuation gear dallies, the friction of generation and annular slab dumb iron hardly.Therefore, opposite with described invention in first to file, when bent axle advances when mobile, air compressor action and supply with pressurized air; When bent axle retreated, the action of air compressor stopped, thereby interrupted compressed-air actuated supply.

According to air compressor of the present invention, when compressed-air actuated supply action, because that the spring-back force of bent axle by annular leaf spring advances is mobile, the thrust load that is applied on annular slab dumb iron and the actuation gear is obviously not too big; When compressed-air actuated supply action stopped, because that bent axle retreats is mobile, annular leaf spring was compressed, so this spring-back force does not push the annular slab dumb iron forward, so spring-back force can not be applied on the actuation gear.According to this feature, actuation gear does not take place to rub and dally with other parts of periphery.Compare with the applicant's invention in first to file, obviously can significantly reduce whole water rate, and suppress the power loss of motor substantially, and can significantly reduce the consumption of fuel and machine oil simultaneously, help the improvement of fuel consumption and suppress the shortening in life-span.

In addition, compare, obviously can reduce the length of annular slab dumb iron, make its processing and assembly operation become very simple and easy with air compressor in first to file.And have interval between the front that can dwindle widely from the crankcase front to actuation gear, and and can save thrust bearing, make fitting operation on the motor very simple and easy advantage that becomes.

Description of drawings

Fig. 1 is the pie graph that an example of general air compressor roughly is shown;

Fig. 2 (a) and (b) be sectional drawing before illustrating at the operating state of the air compressor of first to file;

Fig. 3 is the perspective exploded view that air compressor of the present invention is shown;

Fig. 4 (a) is the sectional drawing when bent axle in the air compressor of the present invention being shown being in forward travel state, (b) be to amplify the sectional drawing that the clutch part in (a) is shown, (c) being to amplify the sectional drawing that the cylinder portion in (a) is shown, (d) is the sectional drawing that amplifies the pump piston part that illustrates in (a);

Fig. 5 (a) is the sectional drawing when bent axle in the air compressor of the present invention being shown being in fallback state, (b) be to amplify the sectional drawing that the clutch part in (a) is shown, (c) being to amplify the sectional drawing that the cylinder portion in (a) is shown, (d) is the sectional drawing that amplifies the pump piston part that illustrates in (a).

Embodiment

Below, describe in detail with reference to the accompanying drawings and implement best mode of the present invention.

Fig. 3 is the perspective exploded view that the air compressor of the embodiment of the invention is shown, and Fig. 4 (a)-(d) and Fig. 5 (a)-(d) illustrate bent axle in this air compressor respectively to be in to advance and to move and the sectional drawing when retreating mobile status.

The crankcase 10 of the air compressor of the embodiment of the invention is arranged on the motor 100, and the lower horizontal in described crankcase connects in the crankshaft room 11 of ground formation, and bent axle 20 can be installed with rotating freely.

The front end of bent axle 20 runs through by lining 12 and exposes, wherein this lining 12 is bonded on by snap ring on the front end of crankshaft room 11 in case anti-avulsion falls, be positioned at (front end of bent axle 20) under the state of inside of motor 100, on the horizontal position 21 of the rear side that outer circumferential face is the level of state in the described front end that exposes, be coupling and closed clutch outer member 30 cylindraceous, be formed with described horizontal position in the central authorities of this clutch outer member 30 and run through the axis hole 31 that passes through.

Clutch outer member 30 as with its back by the parts that the mode of the preceding surface bearing of lining 12 is coupling and closes, be formed with spline 32 within it on the side face, and the front and back of axis hole 31 (axially) size is less than the front and back size of horizontal position 21.

Be like this for make advance, retreat in the scope of the interval t that bent axle 20 can form in the difference by the front and back size of axis hole 31 and horizontal position 21 mobile.

Outer circumferential face in the front end of bent axle 20 forms the annular slab dumb iron 40 plane of inclination, tubulose that engages consistent (coincidence) with described inclination position with inner peripheral surface and is coupling and closes on the inclination position 22 of the centre that forward end tilts.This annular slab dumb iron by being fastened on the outer circumferential face in the described front end secure component 40a that forms on screw thread screw thread, front end the position 23, is installed on the inclination position of described centre in case anti-avulsion falls.

As secure component 40a, preferably adopt nut, because the inner peripheral surface of annular slab dumb iron 40 forms with the position 22 that tilts and engages consistent plane of inclination, so when with the fastening described secure component of the mode of this annular slab dumb iron 40 and inclination position 22 mutual fluid-tight engagement, the annular slab dumb iron rotates with bent axle.

The internal diameter at the front end position 41 of the inner peripheral surface of annular slab dumb iron 40 forms bigger than the internal diameter at rear side position, so that secure component 40a is contained in the front end position, rearward end side at outer circumferential face is being extended flange 42, at the spline 43 of spline 32 engagements that are formed with on the outer periphery of this flange 42 and form on the inner peripheral surface of clutch outer member 30.

When so making annular slab dumb iron 40 be installed on the bent axle 20, between the interior front of the back of flange 42 and clutch outer member 30, be formed with the space a of predetermined distance, a plurality of annular leaf springs 50 are installed in this space.

So the spring-back force of the annular leaf spring of installing 50 have in that clutch outer member 30 is rearward pushed fluid-tight engagement on lining 12 in, annular slab dumb iron 40 is forwards pushed the bent axle 20 mobile effect of advancing that makes.

On the outer circumferential face of the front end side of annular slab dumb iron 40, be provided with described front end engage as axle, and the actuation gear 60 that can rotate freely dividually with the annular slab dumb iron.

Actuation gear 60 is by extending and be formed with the central siphon portion 62 of spline 63 and constitute on outer circumferential face to rear side being formed with on the outer periphery with the gear part 61 of the timing gear (not shown) meshed gears tooth of motor 100 sides and reduced ground.

Between the outer circumferential face of the front end side of and inner peripheral surface and annular slab dumb iron 40 distolateral in the front and back of this central siphon portion 62, the mode of not carrying out the contact of direct face with them is plugged with lining 60a, gasket ring shape 44 is installed and is provided with collar 45 to come off to prevent actuation gear 60 on the outer circumferential face of the front end side of described annular slab dumb iron.

And the front central part 64 of actuation gear 60 forms the shape with the prescribed depth depression, is positioned at described central part by the front end that makes bent axle 20, so that extremely dwindle to greatest extent at the interval of exposing of the front end of described bent axle from the front of crankcase 10.

On the other hand, between the outer circumferential face of the central siphon portion 62 of the inner peripheral surface of clutch outer member 30 and actuation gear 60, by their diameter poor, and form holding space b, in this holding space, clutch 70 can be installed at the front side of the flange 42 of annular slab dumb iron 40.

Clutch 70 is by a plurality of steel annular slabs 71 and a plurality of friction annular slab 72 and constitute, wherein the internal diameter of the axis hole of these a plurality of steel annular slabs 71 is bigger than the external diameter of central siphon portion 62, at the spline that is formed with on the outer circumferential face and engages with the spline 32 that forms on the inner peripheral surface of clutch outer member 30, and the diameter of these a plurality of friction annular slabs 72 is littler and be formed with the spline that engages with the spline 63 that forms on the inner peripheral surface of axis hole on the outer circumferential face of described central siphon portion than this steel annular slab.

Above-mentioned steel annular slab 71 and friction annular slab 72 are installed in alternatively overlapping one by one each other mode, and the axis hole of described steel annular slab and central siphon portion 62 separate, and on the contrary, the spline that forms on outer circumferential face engages with the spline 32 of clutch outer member 30; The spline that forms on the axis hole of described friction annular slab engages with the spline 63 of central siphon portion, and on the contrary, the inner peripheral surface of outer circumferential face and described clutch outer member is spaced apart.

So, steel annular slab 71 can rotate with clutch outer member 30, and friction annular slab 72 can be with actuation gear 60 rotations.And the collar 73 of the forward end of described steel annular slab and the inner peripheral surface of friction annular slab by being arranged on clutch outer member is installed preventing and is forwards come off, and at its rear by flange 42 supportings of annular slab dumb iron 40.

When advancing together at the spring-back force effect lower annular plate dumb iron 40 of annular leaf spring 50 and bent axle 20 when mobile, so the steel annular slab 71 of the clutch of installing 70 and friction annular slab 72 just are compressed between flange 42 and the collar 73, make each other seamlessly fluid-tight engagement together, thereby actuation gear 60 and described annular slab dumb iron and clutch outer member are connected in one.

After so connecting, the rotating force of actuation gear 60, when being passed to clutch outer member 30 by clutch 70, the spline 43 by the lip part 42 that engages with spline 32 is passed to annular slab dumb iron 40 and bent axle 20 is rotated.

On the contrary, as described later, when annular slab dumb iron 40 retreats when mobile with bent axle 20, annular leaf spring 50 is compressed, fluid-tight engagement steel annular slab 71 and friction annular slab 72 together is spaced from each other, so the rotating force of actuation gear 60 is disengaged to the effect of the clutch 70 of described bent axle transmission, described actuation gear only arranged in idle running, therefore, the action of air compressor stops.

On the other hand, the rear end side in crankshaft room 11 is provided with the bent axle 20 that the spring-back force by annular leaf spring 50 is advanced and retreats mobile cylinder 80.

Cylinder 80 has: be configured to seal the rear end of the opening of crankshaft room 11, central authorities in front are formed with the axle ditch that is coupling and closes with bent axle 20, and are formed with the inflator 81 of accommodating part in the back; Be arranged to seal the lid 82 of accommodating part of the opening of this inflator in the back; Be installed in the piston 83 in the described accommodation section; The through hole of the central authorities of end by being formed on described inflator and piston also is fastened on the screw axis 84 of central authorities of crankshaft rear end portion; Separate bearing holder/supporting plate 85 that the earth's axis be connected with the back of piston with the interval of stipulating by this screw axis; Be plugged on the bearing 86 between described piston and the supporting plate; Being formed on the inflator with injecting compressed air between the front of the back of described inflator and piston is the inlet 87 of signal pressure; Install in the mode between the front of the back that is plugged on described inflator and piston, and can apply the helical spring 88 of precompression to described bearing by making piston resilience rearward; With with the end inserting in the mode screw threads for fastening that is formed at the guiding groove on the back of described inflator on described piston, prevent the rotation and the guide finger 89 of this piston to advancing, retreat mobile channeling conduct.

And, in inflator 81, be formed with the circulation flow path 81a that connects front-back, so that the engine oil supplying that flows into crankshaft room 11 to the 80a of cylinder chamber, simultaneously, makes the machine oil that flows into be discharged to suppress pressure resistance when the action of piston 83.

Preferably, the inner peripheral surface of the through hole that do not form with central authorities separately at inflator 81 and piston 83 of the outer circumferential face of screw axis 84 contacts.For this reason, can form the gap by the difference of the diameter between them realizes; The front periphery portion of the axis hole of the screw axis 84 that forms in the central authorities of bearing supporting plate 85 is forwards prolonged and form the 85a of central siphon portion, and the 85a of this central siphon portion is plugged between the inner peripheral surface of the outer circumferential face of described screw axis and through hole.

Certainly, in this case, equally preferably, with the inner peripheral surface of the axis hole separately of the outer circumferential face of the described central siphon 85a of portion and inflator 81 and piston 83 or the inner peripheral surface of described central siphon portion and the discontiguous mode of outer circumferential face of screw axis 84, keep the gap between them.

For this cylinder 80, when the pressurized air between the front of back of sending into by regulator 6b, inject inflator 81 by inlet 87 and piston 83 when to be signal pressure bigger than the spring-back force of the annular leaf spring 50 that bent axle 20 is advanced, just make described piston retreat, so the described bent axle that engages with bearing supporting plate 85 and screw axis 84 retreats mobile, simultaneously, annular slab dumb iron 40 also retreats, thereby compresses described annular leaf spring.

At this moment, the degree that retreats of piston 83 is proportional with the formed interval t of front and back size of the horizontal position 21 that passes through axis hole 31 and rear end.

So, because the annular slab dumb iron 40 that axle is connecting in the front end side of bent axle 20 also retreats, so the steel annular slab 71 and the friction annular slab 72 of the clutch 70 of fluid-tight engagement are spaced from each other integratedly on ground very close to each other mutually, and enter slipping state, so actuation gear 60 is cut off by being connected of described clutch with clutch outer member 30.So, even described actuation gear is rotating, its rotating force can not be passed to described clutch outer member yet, thereby described annular slab dumb iron and bent axle no longer rotate, and has only actuation gear idle running.

Crankshaft room 11 is provided with along the pump chamber 90 that vertically extends upward with crankshaft room 11.Pump piston 91 is installed in described pump chamber.

One end of pump piston 91 and be coupling and close be coupling the other end of the connecting rod 92 that closes of the horizontal component 24 of bent axle 20 is supplied to air tank 6a with pressurized air in the time of reciprocating action when described crankshaft rotating.

The other end of connecting rod 92 is inserted and is engaged in the engaging groove 93, and this engaging groove is formed at the central part of pump piston 91, and hollowly forms in the mode towards crankshaft room's 11 side openings.The inner width r of this engaging groove, bigger than the front and back width f of described connecting rod shown in Fig. 4 (d), be formed with axis hole 94 in the mode of cross-section intermediate portion flatly.

Therefore, when the mode that connects the axis hole that forms in the other end of connecting rod 92 with pivot pin 96 engages, when making its two ends be fixed in the axis hole 94, described connecting rod, under pivot pin is coupling the state that closes, can be in the formed scope of difference by the inner width r of width f before and after it and engaging groove 93, flatly advance and retreat mobile.

This exactly because to be pump piston 91 be mounted to can vertically to-and-fro motion in pump chamber 90, and bent axle 20 is arranged to can advance in crankshaft room 11 and retreat mobile, when this bent axle advances and retreats when mobile, connecting rod 92 also advance together and retreat mobile, so can make described pump piston with to-and-fro motion in pump chamber.

And the upper end of the opening of pump chamber 90 covers by cylinder cap 97, and this cylinder cap 97 has the exhaust port 95 that the pressurized air that is produced by pump piston 91 can be discharged and be sent to air tank 6a.

The air compressor of the embodiments of the invention that constitute like this, advance mobile at annular slab dumb iron 40 and bent axle 20 spring-back force by annular leaf spring 50, be plugged on the state that steel annular slab 71 between clutch outer member 30 and the actuation gear 60 and friction annular slab 72 engage each other closely being integral, be that clutch 70 makes under described actuation gear and the state that clutch outer member 30 is connected, when motor 100 runnings, described actuation gear and clutch that its power meshes through the timing gear with motor, and be passed to bent axle, thereby its bent axle is rotated by clutch outer member and annular slab dumb iron.

So, the bearing supporting plate 85 that is arranged on the screw axis 84 in the rear end of bent axle 20 also rotates together, but, piston 83 because and described screw axis and bearing supporting plate keep apart thereby do not rotate, on the contrary, pump piston 91 to-and-fro motion by connecting rod 92 in the pump chamber 90, the pressurized air that produces in this process are discharged from by exhaust port 95 and are sent to air tank 6a and store.

When this action continues to carry out, be supplied to compressed-air actuated pressure ratio setting pressure in the air tank 6a when high, compressed-air actuated signal pressure flows into by inflow entrance 87 through regulator 6b between the front of the back of inflator 81 of cylinder 80 and piston 83, when the signal pressure of this inflow is bigger than the spring-back force of the annular leaf spring 50 that bent axle 20 is advanced, described piston rearward pushed and make retire thereafter moving.

So, when bent axle 20 retreated, annular slab dumb iron 40 also retreated together, thereby annular leaf spring 50 is compressed.Therefore, the fluid-tight engagement state of steel annular slab 71 that mutual fluid-tight engagement integratedly by the spring-back force of described annular leaf spring and friction annular slab 72 is disengaged and is spaced from each other, as a result, actuation gear 60 is cut off by being connected of described clutch 70 with clutch outer member 30 and described annular slab dumb iron.

When the connection of clutch 70 was cut off, even the power that described actuation gear 60 passes through motor 100 continues rotation, its rotating force can not be passed to described clutch outer member 30 yet, thereby had only described actuation gear idle running, and bent axle 20 does not rotate.

So,,, certainly prevent the rising that pressure is unnecessary, can also prevent the loss of the power of motor 100 so be interrupted to the compressed-air actuated supply of air tank 6a because air compressor is failure to actuate.

Thereafter, pressurized air in being stored in air tank 6a is used, when its pressure is lower than setting value, the signal pressure that flows into cylinder 80 by regulator 6b is disconnected, pressure in this cylinder dies down, so, and when the spring-back force of annular leaf spring 50 is bigger than signal pressure, owing to described spring-back force effect annular slab dumb iron 40 is forwards pushed, thereby it is mobile that bent axle 20 is advanced.

So, make the steel annular slab 71 of clutch 70 and friction annular slab 72 fluid-tight engagement be integral by the annular slab dumb iron 40 that advances, so actuation gear 60 and clutch outer member 30 are connected by described clutch.Therefore, the power of motor 100 is passed to bent axle 20 through described clutch outer member and annular slab dumb iron, the air compressor action, and pressurized air is supplied to air tank 6b.

In this process, because bent axle 20 and connecting rod 92 advance and retreat mobile interval, as long as for the releasing of the fluid-tight engagement of the steel annular slab 71 that only can realize clutch 70 and friction annular slab 72 and fluid-tight engagement state just passable, because should be not too big at interval, even its eccentric degree was also not too large when described connecting rod was positioned at position eccentric from the center line of pump piston 91, so described pump piston can always carry out normal to-and-fro motion in pump chamber 90.

On the other hand, in the above-described embodiments, be arranged to connecting rod 92 and bent axle 20 and advance together and retreat mobile, pump piston 91 is moved back and forth, but be not to limit to this example, described connecting rod also can not advance and retreat mobile, and bent axle is advanced and retreats mobile.

For this reason, the length of the horizontal component 24 that an end of connecting rod 92 on the bent axle 20 is coupling close is longer than the front and back width f of described connecting rod, described horizontal component can slide, on the contrary, the upper end of described connecting rod can not advance and retreat mobile, is connecting on pump piston 91 and can only carry out rotary axis of earth.

In addition, being connected of bent axle 20 and connecting rod 92 it is also conceivable that the various deformation example except the above embodiments, as long as the rotating force that the bent axle of installing movably 20 can be able to be advanced and retreat to its action is passed to pump piston 91, just all belongs to scope of the present invention.

When requiring high capacity in order promptly to supply with pressurized air, a plurality of pump chambers 90 can preferably be set, still, in the less vehicle of comsumption of compressed air,, 1 pump chamber 90 only is set preferably in order to reduce cost.Therewith pro rata, in described 1 pump chamber, single pump piston 91 and connecting rod 92 only are set preferably.

In addition, in an embodiment of the present invention, as mentioned above, though the figure that pump chamber 90 is taked the situation of 1 inflator is not shown, but it takes the foregoing descriptions of 2 inflators simpler and can be suitable for than pump chamber, though in this omission, this situation does not exceed scope of the present invention.

As mentioned above, by having been described in detail and illustrate with reference to above-mentioned mode of execution, but the present invention is not limited to this, and in the scope that does not break away from basic technological thought of the present invention, the personnel with the common knowledge in present technique field also can carry out other numerous variations.And the present invention should be made an explanation by the scope of accompanying Claim.

Label declaration:

10 crankcases; 11 crankshaft room; 20 bent axles

21 horizontal positions; 22 inclination positions; 23 screw thread positions

30 clutch outer members; 31 axis holes; 32 splines

40 annular slab dumb irons; 41 front end positions; 42 flanges;

43 splines, 50 annular leaf springs; 60 driven wheels

61 gear part; 62 central siphon portions; 63 splines

70 clutches; 71 steel annular slabs; 72 friction annular slabs

73 collars; 80 cylinders; 81 inflators

82 lids; 83 pistons; 84 screw axiss

85 bearing supporting plates; 86 bearings; 87 inlets

88 helical springs; 89 guide fingers; 80a cylinder chamber

The 81a circulation flow path; 90 pump chambers, 91 pump pistons, 92 connecting rods

Claims

1, a kind of air compressor is characterized in that, has:

Bent axle is installed in the crankshaft room of its crankcase on being arranged at motor and can advances and retreat mobile, its front end and connect described crankshaft room and expose forwardly;

Clutch outer member, the horizontal position of the rear side that it is the level of state with outer circumferential face in the front end that exposes of described bent axle be coupling and close, be formed with spline within it on the side face and be coupling the front and back size of the axis hole that closes less than the front and back size of described horizontal position with described horizontal position;

The annular slab dumb iron of tubulose, it is coupling towards the inclination position of the centre that forward end tilts with outer circumferential face in the front end that exposes of described bent axle and closes, inner peripheral surface forms and described inclination position engages consistent plane of inclination, extending lip part at the rearward end gusset of outer circumferential face around ground, wherein is formed with the spline with the spline engagement of described clutch outer member on the outer periphery of this lip part;

Secure component, it is fixed in the front end that exposes of described bent axle at outer circumferential face and is formed with on the screw thread position of front end of screw thread and described annular slab dumb iron is installed on the described inclination position, makes and rotate and forward-reverse moves with bent axle;

The annular leaf spring, it is installed between the back of lip part of the interior front of described clutch outer member and described annular slab dumb iron, the spring-back force of this annular leaf spring has and described clutch outer member is rearward pushed and fluid-tight engagement in the front of described crankshaft room and in fixing, and described annular slab dumb iron is forwards pushed the described bent axle mobile effect of advancing together that makes;

Actuation gear, it has: be formed with on the outer periphery and starting the gear part of extending to rear side of timing gear meshed gears tooth of pusher side and the central siphon portion that is formed with spline on outer circumferential face, and engage with the front end side shaft of described annular slab dumb iron, described front end is rotated with described annular slab dumb iron dividually as axle;

Be installed in the clutch in the holding space between the inner peripheral surface of the central siphon portion outer circumferential face side of described actuation gear and clutch outer member, it is by side before and after supporting at the lip part of collar that is provided with on the forward end of the inner peripheral surface of clutch outer member and described annular slab dumb iron, by a plurality of steel annular slabs and a plurality of friction annular slab and constitute, wherein said steel annular slab and described friction annular slab are installed in alternatively overlapping one by one each other mode, the internal diameter of the axis hole of these a plurality of steel annular slabs is bigger than the external diameter of the central siphon portion of described actuation gear, on outer circumferential face, be formed with spline with the spline engagement of clutch outer member, the diameter of these a plurality of friction annular slabs is littler than this steel annular slab, and at the spline that is formed with on the inner peripheral surface of axis hole with the spline engagement that on the outer circumferential face of described central siphon portion, forms;

Be mounted to reciprocating pump piston in the pump chamber that vertically extends with the crankshaft room of described crankcase, it carries out the action of pressurized air to the air tank supply, heart position is formed with the inner width engaging groove bigger than the front and back size of connecting rod therein, and this engaging groove is towards described crankshaft room opening;

When described crankshaft rotating, make the reciprocating connecting rod of described pump piston, the one end also advances, retreats that mobile mode engages with described bent axle when mobile together to advance, to retreat when described bent axle, the other end to advance, to retreat when described bent axle when mobile the mode of horizontal slip in it advances, retreats mobile scope engage with gudgeon pin shaft, wherein this wrist pin inserts and is engaged in the engaging groove of described pump piston, and cross-section this engaging groove of the level of being arranged to; With

Be arranged on described crankshaft room the rear, when the compressed-air actuated pressure of storing in the described air tank surpasses setting value, move, make described bent axle retreat mobile cylinder.

2, air compressor according to claim 1 is characterized in that, the internal diameter at front end position that described annular slab dumb iron constitutes inner circumferential surface is bigger than the internal diameter at rear side position, secure component is contained in the described front end position.

3, air compressor according to claim 1 is characterized in that, is plugged with lining between the outer circumferential face of the front end side of and inner peripheral surface and described annular slab dumb iron distolateral in the front and back of the central siphon portion of described actuation gear.

4, air compressor according to claim 1 is characterized in that, described cylinder has: be configured to seal the rear end of the opening of described crankshaft room, central authorities in front are formed with the axle ditch that engages with bent axle and are formed with the inflator of accommodating part in the back; Be arranged on the lid of back in the mode of the accommodating part of the opening that seals this inflator; Be installed in the piston in the described accommodation section; The through hole of the central authorities of end by being formed on described inflator and piston also is fastened on the screw axis of central authorities of crankshaft rear end portion; Separate bearing supporter that the earth's axis be connected with the back of piston with the interval of stipulating by this screw axis; Be plugged on the bearing between described piston and the bearing supporter; Being formed on the inlet on the inflator, is signal pressure with injecting compressed air between the front of the back of described inflator and piston.

5, air compressor according to claim 4 is characterized in that, the diameter of through hole that described screw axis constitutes the screw axis that its diameter forms than the central authorities separately at described inflator and piston is little, so that do not carry out the face contact each other.

6, air compressor according to claim 4 is characterized in that, between the front of the back of described inflator and piston the helical spring that can make the resilience rearward of described piston is installed.

7, according to claim 4 or 6 described air compressors, it is characterized in that, has guide finger, this guide finger with the mode screw threads for fastening in the guiding groove of end inserting on being formed at the back of described inflator on described piston, with the rotation that prevents this piston and to advancing, retreat mobile channeling conduct.

8, air compressor according to claim 4 is characterized in that, is formed with circulation flow path in the inflator of described cylinder, and described crankshaft room and the cylinder chamber that piston is installed before this circulation flow path is communicated with are in order to circulation and the inhibition pressure resistance that realizes machine oil.