CN2718327Y

CN2718327Y - Ventilation plug for electric car gear box

Info

Publication number: CN2718327Y
Application number: CNU200420081933XU
Authority: CN
Inventors: 杨林江
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-08-18
Filing date: 2004-08-18
Publication date: 2005-08-17
Anticipated expiration: 2014-08-18

Abstract

A vent plug for an electric car gear box belongs to the technical field of manufacturing of transmission parts for electric cars and mainly comprises a vent plug body (1) with a central large hole (11) and an oil return hole (10), a vent plug cover (2) with an air vent hole (8), an inner air guide pipe (6) with an air guide hole (5), an outer air guide pipe (7) with an air guide groove (9) and the like. The utility model discloses application aerodynamic principle adopts the labyrinth type conduction structure form of inside and outside two oil return chambers, and reasonable in design makes the convenience, can effectively retrieve the outer gaseous lubricating oil of discharge gear box, filters the dust that flows into in the gear box in the air, and dust absorption is effectual, can also keep the cleanness of incasement lubricating oil, is favorable to reducing the wearing and tearing of parts, prolongs the life-span of parts, also is favorable to prolonging the life of lubricating oil, reduces machine oil loss and environmental pollution.

Description

Electrocar gear-box breather plug

Technical field

The utility model relates to a kind of electrocar gear-box breather plug, belongs to the manufacturing technology field of electrocar with transmission part.

Background technique

Automobile and motorcycle have gear-boxes such as gearbox, speed reducer or main reducing gear, have difference variation during its work, and gear-box inner air pressure and temperature difference occurs with external atmospheric pressure and atmospheric temperature; Also can cause the change of volume of air in the case during running of movement parts such as gear, promptly so-called air pumping effect, the most serious is engine crankcase.No matter the pressure reduction that these casings are temperature difference to be produced or the air pumping effect of movement parts all will consume energy and pay merit.In order to reduce this partly energy consumption, need and set up open to atmosphere intercommunicating device with the minimizing of casing pressure reduction, the most frequently used is exactly atmosphere coupling cock and atmosphere breather plug, is called for short breather plug.Ventilation is plugged with two effects: the firstth, and with air in the case and ambient atmosphere UNICOM, the secondth, the dust in the ambient atmosphere is blocked, make it to enter less casing as far as possible, the oily minimally in the interior mist of oil of case is discharged outside the case, reduce machine oil loss and atmosphere pollution.

The gear-box breather plug that existing breather plug such as motorcycle are used is the plug screw of a hollow, very long flexible pipe of outside cover, and the direct UNICOM of atmosphere and cabinet space, just passage extends, and the effect of its dust-break dust and recovery mist of oil is relatively poor.Simpler in addition, in plug screw central authorities and side punching, directly atmosphere is communicated with cabinets cavity, its air vent has turned a quarter bend, and the side eyelet is many and little, though big grain dust there is barrier effect, still relatively poor to the barrier effect of little dust.

Summary of the invention

The purpose of this utility model provides a kind of reasonable in design, can effectively stop atmospheric dust, and is good to mist of oil particulate recovering effect, easily manufactured electrocar gear-box breather plug.

The utility model is electrocar gear-box breather plug, comprise the ventilation cock body, the ventilation gag, it is characterized in that breather plug covers offers vent, offer central macropore and spill port in the ventilation cock body, the top of described central macropore is embedded with the interior air pipe of band gas port and the outer air pipe of band gas guide groove, in constituting between interior air pipe and the outer air pipe oil revolute chamber and with central macropore and spill port conducting, constitute between outer air pipe and the ventilation cock body outer oil revolute chamber and with interior oil revolute chamber and vent conducting.

The utility model utilization aerodynamic principle, adopt the maze type conducting structure form of inside and outside two oil revolute chamber, reasonable in design, can effectively reclaim the lubricant oil of discharging the outer gas of gear-box, filter and flow into airborne dust in the gear-box, pick-up performance is good, can also keep the cleaning of lubricant oil in the case, help reducing machine members, prolong the life-span of parts, also help prolonging the working life of lubricant oil, reduce machine oil loss and environmental pollution.

Description of drawings

Accompanying drawing is an overall structure sectional view of the present utility model.

Among the figure: 1 is the ventilation cock body, and 2 are the ventilation gag, and 3 is outer oil revolute chamber, and 4 is interior oil revolute chamber, and 5 is gas port, and 6 is interior air pipe, and 7 is outer air pipe, and 8 is vent, and 9 is gas guide groove, and 10 is spill port, and 11 is central macropore.

The solid arrow direction is the route of giving vent to anger among the figure, and the dotted arrow direction is oil return or air inlet route.

Embodiment

The utility model is mainly by constituting with the ventilation cock body 1 of central macropore 11 and spill port 10, the ventilation gag 2 of band vent 8, the interior air pipe 6 of band gas port 5, the outer air pipe 7 of band gas guide groove 9 etc.There is the bigger central macropore 11 of a diameter in ventilation cock body 1 central authorities, and central macropore 11 periphery cars have two circular grooves, but interior air pipe 6 of setting-in and outer air pipe 7; Interior air pipe 6 and outside be equipped with the spill port 10 that machine oil is reclaimed in 4 little being used for of diameter between the air pipe 7; Upper end at ventilation cock body 1 can be spun on ventilation gag 2 on the ventilation cock body 1; In case screw ventilation gag 2, then interior air pipe 5 and outside form between the air pipe 7 in oil revolute chamber 4, between ventilation cock body 1 and outer air pipe 7, form outer oil revolute chamber 3, interior oil revolute chamber 4 and central macropore 11 and spill port 10 conductings, outer oil revolute chamber 3 and interior oil revolute chamber 4 and vent 8 conductings.

During use, when gear housing internal pressure during greater than barometric pressure, the interior air of case is being mingled with mist of oil and is entering central macropore 11 and spill port 10, in flowing to, gas produces collision because of air-flow inertia with ventilation gag 2 during air pipe 6 tops, because of just having mist of oil particulate quite partly, collision is adsorbed, the generation initial stage is by central macropore 11 oil returns, but most air is being mingled with mist of oil to be continued to flow toward interior oil revolute chamber 4 by 4 gas ports 5 of interior air pipe 6 upper ends, this moment, air-flow was forced to turn to down row, down Pai process can be run into the interior draft of case that spill port 10 is come in again, this air-flow also is being mingled with mist of oil, the mist of oil particulate is collided and can be formed big elaioleucite, and these big elaioleucites are adsorbed because matter heavily sinks.This partly is back in the casing, but major part is forced to change 90 ° of outer oil revolute chamber 3 of gas guide grooves 9 flow directions by outer air pipe 7 lower ends, then up arranges; At this moment most mist of oil is adsorbed toward dirty with mutual friction mutually through twice air flow divert, flows back to casing by 4 spill ports 10; Remaining mist of oil is being squeezed the outwards upper end row of oil revolute chamber 3, and when running into for the second time the top of ventilation gag 2 and be adsorbed oil revolute chamber 3 lower ends stream outward, oil revolute chamber 4 in entering by lower end gas guide groove 9 flow back into casing through spill port 10; At this moment be substantially free of mist of oil by air in the casing of vent 8 discharges, by vent 8 discharges is air.

Less than atmosphere, ambient air will be irritated in casing by breather plug by vent 8, and the air outlet is become suction port as the gear-box inner air pressure, and direction flows into casing toto caelo; This moment, air-flow also turned to collision by four times, but airborne dust makes the air that enters in the case well be filtered the air that obtains cleaning owing to turning to breather plug of air-flow bumped against adsorbed filtration of breather plug internal chamber wall that is sticked machine oil everywhere.

The utility model is designed to maze type conducting structure form, utilize the inside and outside gas differential pressure of case and force to turn to for four times to collide and adsorb twice oil return, the effect that good oil return is arranged and filter dust, to reducing the pumping loss of electrocar main reducing gear, the cleaning of maintenance inner box-machine oil and the loss and the befouling environment effect of minimizing machine oil are very big.

Claims

1, a kind of electrocar gear-box breather plug, comprise ventilation cock body (1), ventilation gag (2), it is characterized in that ventilating and offer vent (8) on the gag (2), offer central macropore (11) and spill port (10) in the ventilation cock body (1), the top of described central macropore (11) is embedded with the interior air pipe (6) of band gas port (5) and the outer air pipe (7) of band gas guide groove (9), in constituting between interior air pipe (6) and the outer air pipe (7) oil revolute chamber (4) and with central macropore (11) and spill port (10) conducting, outer air pipe (7) and ventilate between the cock body (1) formation outer oil revolute chamber (3) and with interior oil revolute chamber (4) and vent (8) conducting.