Utility model content
This utility model provides a kind of check valve, change speed gear box and automobile, also solves the check valve of prior art
Structure is complicated, hold corrosion-prone problem.
A kind of check valve, including: valve body and spheroid;Inlet and liquid outlet is offered on described valve body,
Being formed with into valve pocket in described valve body, described valve pocket includes cavity and cavity volume;Described cavity is thick along valve body
Degree direction extends, and the first end of described cavity connects with described liquid outlet, and described cavity volume is positioned at described cavity
The side of the second end, and connect with the second end of described cavity;Described cavity volume connects with described inlet,
And accommodate spheroid in described cavity volume;The diameter of described spheroid is more than the diameter of described inlet.
The further improvement of above-mentioned check valve, described cavity volume has a spherical sidewall, and described spherical sidewall
First edge extends to by described inlet, the second edge of described spherical sidewall and the sidewall of described cavity
Connect.
The check valve that this utility model provides, accommodates spheroid by arranging cavity volume at valve body liquid feeding end, thus
Can realize the function of unidirectional feed liquor by coordinating of spheroid and inlet, structure is the simplest;And ball
Body can be the most movable in cavity volume, it is not easy to corrosion.
A kind of change speed gear box, including: oil pump and oil cylinder;The first pipe is connected respectively between described oil pump and oil cylinder
Road and second pipe;Described first pipeline includes that first throttle valve, described second pipe include as mentioned above
Check valve, the inlet of described check valve connects described oil pump, and the liquid outlet of described check valve connects institute
State oil cylinder.
The further improvement of above-mentioned change speed gear box, the second pipe between inlet and the oil pump of described check valve
On be additionally provided with second throttle.
The further improvement of above-mentioned change speed gear box, the second pipe between liquid outlet and the oil cylinder of described check valve
On be additionally provided with second throttle.
A kind of automobile, described automobile is provided with change speed gear box as above.
Check valve, change speed gear box and the automobile that this utility model provides, by spheroid in check valve and inlet
Cooperation realize the control in convection cell direction, simple in construction and the most perishable.Further, by oil pump
With connection includes the first pipeline of first throttle valve and includes the second pipe of check valve between oil cylinder, from
And change speed gear box during oil-feed and oil return clutch-plate hold tightly and separation tends to be steady, and then make automobile
Gearshift more smooth out.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail.
In this utility model, the noun of locality " upper and lower, left and right " of use is not if making contrary explanation,
Generally refer to " upper and lower, left and right " with reference to accompanying drawing, but, it will be understood by a person skilled in the art that
Using the above-mentioned noun of locality merely to the description to detailed description of the invention is easier, it is not to this reality
With novel concrete restriction.
The similar words such as " first ", " second " used in this utility model, are not offered as any spy
Different order or importance, they are only intended to identify discrete component and make description of the present utility model more
Add and understand simplicity.
Fig. 1 is the partial sectional view of check valve.As it is shown in figure 1, the check valve 1 that the present embodiment provides,
Including: valve body 11 and spheroid 13.Offer on valve body 11 for feed liquor inlet 115 and for
Go out the liquid outlet 117 of liquid.Valve body 11 is internally formed the valve pocket flowed for liquid.Concrete, this valve pocket
Including cavity 111 and the cavity volume 113 that accommodates spheroid 13, wherein, cavity 111 along the vertical direction (that is,
The thickness direction of valve body 11) extend, cavity volume 113 is arranged on right side and the cavity volume 113 of cavity 111 upper end
Connect with the upper end of cavity 111.The lower end of cavity 111 connects with liquid outlet 117, cavity volume 113 upper
End connects with inlet 115.Further, the diameter of spheroid 13 is more than the diameter of inlet 115, so that
Obtain spheroid 13 and can block inlet 115.
The operation principle of this check valve 1 is: the fluid such as liquid or compressed gas flows into from liquid feeding end direction
Time, the fluid of inflow check valve 1 applies downward pressure to spheroid 13 at inlet 115 thus promotes
Spheroid 13 moves toward away from inlet 115 direction, so, and will between spheroid 13 and inlet 115
Gap occurs, so that fluid flows in cavity volume 113 at gap, and flows into cavity 111 through cavity volume 113
Check valve 1 is flowed out afterwards at the liquid outlet 117 being connected with cavity 111 lower end.And when fluid is from liquid outlet
When direction flows into, the fluid entering cavity volume 113 after liquid outlet 117 flows through cavity 111 can be to spheroid 13
Apply thrust upwards thus promote spheroid 13 to move toward near inlet 115 direction, so, will make
Inlet 115 is blocked by spheroid 13 completely, and then fluid cannot be flowed out from inlet 115.
The check valve 1 of the present embodiment, accommodates spheroid 13 by arranging cavity volume 113 at valve body 11 liquid feeding end,
Such that it is able to by the function coordinating to realize unidirectional feed liquor of spheroid 13 with inlet 115, structure is very
Simply;And spheroid 13 can be the most movable in cavity volume 113, does not the most just have junction point with valve body 11,
Thus be not easy to be etched electrochemically.
Further, cavity volume 113 is made up of the spherical sidewall of valve body 11, and the first edge of this spherical sidewall prolongs
Extending inlet 115 other, the second edge of spherical sidewall is connected with the sidewall of cavity 111.By above-mentioned
Arrange, the shape of cavity volume 113 can be made preferably to coordinate with spheroid.
Fig. 2 is the oil channel structures schematic diagram of change speed gear box.As in figure 2 it is shown, the present embodiment also provides for a kind of change
Speed case, including: oil pump 3 and oil cylinder 4.Connect between oil pump 3 and oil cylinder 4 and have the first pipeline and the
Two pipelines, wherein, the first pipeline includes first throttle valve 2, and second pipe includes above-mentioned check valve 1.Should
The inlet 115 of check valve 1 connects oil pump 3, and the liquid outlet 117 of this check valve 1 then connects oil cylinder 4.
The work process of above-mentioned change speed gear box is: during oil-feed, and hydraulic oil is pumped out by oil pump 3, respectively from first
Pipeline flows into oil cylinder 4 through first throttle valve 2 and from second pipe through check valve 1, thus promotes oil cylinder
In piston movement to hold clutch-plate tightly.So, when oil-feed by the throttling action of second throttle 2
Just can slow down the speed that in oil cylinder 4, fluid increases, so that the action holding clutch-plate tightly is compared
Gently.And, can also be controlled by the aperture of regulation first throttle valve 2 in practical work process
The speed of oil-feed so that the action holding clutch-plate tightly is more steady.During oil return, due to the list in second pipe
Set-up mode to valve 1 make second pipe be only capable of oil-feed and can not reversely oil return, therefore, in oil cylinder 4
Hydraulic oil can only return to oil pump 3 through first pipeline at first throttle valve 2 place.So, in oil cylinder 4
Hydraulic oil flow out speed will reduce, that is, oil cylinder 4 fluid reduce speed slow, from
And make the action of separation clutch-plate more steady.And, when real work, it is also possible to by controlling the
The aperture of the first throttle valve 2 on one pipeline controls the speed of oil return, so that the separation of clutch-plate
Process is more steady.Pass through above procedure, so that it may so that the speed-change process of change speed gear box more smoothes out, do not dash forward
So.
The change speed gear box of the present embodiment, due to the holding tightly and separating the most very of clutch-plate during oil-feed and oil return
Steadily, so that the gear shift operation of automobile more smoothes out, and then the service behaviour of automobile is improved.
Further, it is also possible between the inlet 115 and oil pump 3 of check valve 1, or, unidirectional
It is connected second throttle 5 between the liquid outlet 117 of valve 1 and oil cylinder 4.
The change speed gear box of the present embodiment, after the second pipe including check valve 1 arranges second throttle 5,
Differring primarily in that of its work process with the above-mentioned change speed gear box being not provided with second throttle 5:
During oil-feed, the hydraulic oil of the second pipe flowing through check valve 1 place in oil pump 3 also needs to through this
Second throttle 5 on pipeline, thus, the feed liquor speed on second pipe will be slack-off.So,
When can make oil-feed, the fluid in oil cylinder 4 gathers way more mild, so that holding the action of clutch-plate tightly more
Add steadily.And, when oil-feed, it is also possible to by the control of second throttle 5 aperture is come further
Control speed during second pipe oil-feed, thus the speed changing the oil-feed of whole oil cylinder 4 make it tend towards stability,
And then make the action holding clutch-plate tightly more steady.
Therefore, by arranging second throttle 5 on the second pipe of change speed gear box, it is possible to control oil cylinder 4
The speed of oil-feed, so that clutch-plate is more steady when holding tightly, the most also allows for the gearshift of automobile
Operation can more smooth out.
The present embodiment also provides for a kind of automobile, and this automobile is provided with change speed gear box as above.
The automobile of the present embodiment, by connect between the oil pump 3 of change speed gear box and oil cylinder 4 first pipeline and
Second pipe, wherein the first pipeline includes choke valve 2, and second pipe includes check valve 1.So, pass through
The common effect of first throttle valve 2 and check valve 1 makes automobile can smooth out very much during gearshift,
Improve startup and the gearshift performance of automobile.If arranging a second throttle 5 on second pipe again
The automobile gearbox that can also make is held tightly during clutch-plate more steady, becomes such that it is able to improve automobile further
Ride comfort during shelves, and then improve automobile starting and gearshift performance.
Describe in detail preferred implementation of the present utility model above in association with accompanying drawing, but this practicality is new
Type is not limited to the detail in above-mentioned embodiment, in technology concept of the present utility model,
The technical solution of the utility model can be carried out various simple variant, these simple variant belong to this reality
With novel protection domain.
It is further to note that each the concrete technical characteristic described in above-mentioned detailed description of the invention,
In the case of reconcilable, can be combined by any suitable means.In order to avoid unnecessary
Repeating, various possible compound modes are illustrated by this utility model the most separately.
Additionally, combination in any can also be carried out between various different embodiments of the present utility model, as long as
It is without prejudice to thought of the present utility model, and it should be considered as content disclosed in the utility model equally.