CN203394910U - Follow-up valve - Google Patents
Follow-up valve Download PDFInfo
- Publication number
- CN203394910U CN203394910U CN201320395360.7U CN201320395360U CN203394910U CN 203394910 U CN203394910 U CN 203394910U CN 201320395360 U CN201320395360 U CN 201320395360U CN 203394910 U CN203394910 U CN 203394910U
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- Prior art keywords
- valve
- upper cover
- servo
- valve body
- air outlet
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- Expired - Fee Related
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Abstract
The utility model relates to a connecting component of an automobile gear-shift air cylinder and in particular to a follow-up valve. A sealing surface of an upper cover (2) of the follow-up valve is provided with a specially-shaped ring groove (21) through a die casting process, the specially-shaped ring groove (21) is internally provided with a rubber specially-shaped sealing ring (8), and after the upper cover (2) and a lower valve body (10) are assembled, the rubber specially-shaped sealing ring (8) arranged in the specially-shaped ring groove and an airtight plate (9) jointly act to achieve a sealing effect. Through the improvement, the follow-up valve is simple to assemble; in addition, when components inside the valve body are damaged, the components can be overhauled just by opening the upper cover (2), and after the overhauling is ended, the upper cover (2) and the airtight plate (9) can be continuously used, thus the cost is reduced.
Description
Technical field
The utility model relates to the connected element of automobile gear shift cylinder, relates in particular to a kind of servo valve.
Background technique
Servo valve, for the connected element of automobile gear shift cylinder, controls by air pressure the switching that shifting cylinder pistons work carries out high to low gear.Servo valve of the prior art, makes airtight pane and upper cover reach sealing effect by sizing materials such as flat sealant or two sided plasters, and this assembly technology will be wasted in process of production a large amount of time and wait for that sizing material is dry, increases time cost.In addition, at servo valve assembly failure, need to do over again in maintenance process, airtight pane and upper cover cannot utilize again, thereby increase the cost of component.
The Chinese utility model patent that for example publication number is CN2056646U, it discloses the pneumatic type clutch booster unit that a kind of heavy truck is used, it is connected a servo valve between the withdrawal fork rocking arm of pedal rocking arm and controlled clutch, servo valve is controlled the gas circuit of a servo-cylinder, the push rod of servo-cylinder is realized the power-assisted effect to withdrawal fork rocking arm, servo valve in the utility model is simple in structure, easy processing, but the valve gap at the two ends, left and right of this servo valve is and is threaded, so just easily there is the phenomenon of thread looseness, in addition poor sealing.
The Chinese utility model patent that for example publication number is CN1109573A again, it discloses a kind of electromagnetic slave safety valve that can be applicable to the full-automatic gas-fired water heater of the various sources of the gas of various capacity, its armature by active electromagnet and servo-actuated valve forms, during energising, the two is inhaled mutually, by water vapor linked valve, push the valve of adhesive open, power-off or when flame-out, lose suction, servo-actuated valve is reliably closed rapidly by valve spring, its volume only has the 1/3-1/4 of electromagnetism self-priming valve, and free from residual magnetism, with the dry electricity of a joint, can work, whole valve can directly pack in gas pipeline, but valve gap and the valve body of the servo valve in the utility model are directly bolted, and do not add sealed member, and then cause this servo valve sealing effect poor.
Model utility content
The above-mentioned technological deficiency existing in order to solve prior art, the purpose of this utility model is to provide a kind of servo valve, the assembling of servo valve of the present utility model is simplified, and only upper cover need be opened and can be overhauled when the parts of valve inner are damaged, maintenance finishes rear upper cover and airtight pane all can continue to use, thereby has reduced cost.
In order to realize above-mentioned purpose of design, the scheme that the utility model adopts is as follows:
, comprising upper cover and lower valve body, described upper cover is placed in the top of lower valve body and is bolted together; Between upper cover and lower valve body, be provided with airtight pane, on described upper cover and airtight pane surface of contact, by extrusion process, be processed with special-shaped ring recess.
The special-shaped ring recess of appeal is the closed pockets that two Curved ring-types are combined.
Its working principle is: gas enters in the cavity of valve body from the S suction port of upper cover, then passes through piston rod 11, next enter in valve, and valve open, gas enters into the H air outlet of upper cover through airtight pane Shang hole, finally discharge.
When control air pressure enters from air input joint, air pressure can promote the Y-shaped ring of piston rod bottom, at this moment Y-shaped ring will push base spring, this base spring is extruded in the inner chamber of base, this at present the pressure hole of valve body lower end be opened, air pressure enters in pressure hole, under the thrust of air pressure, be placed in the upwards operation of valve in valve spring, leave valve position limit socket, air pressure enters into L air outlet, the air pressure that enters place, L air outlet is divided into two-way, discharge the L air outlet from upper cover at S suction port place on one tunnel, discharge from the P air outlet of lower valve body lower end at place, H air outlet on another road.
Preferably, in described special-shaped ring recess, be provided with fixing ring.During the work of this servo valve, fixing ring is placed in special-shaped ring recess, thereby upper cover and airtight pane is played to the effect of sealing, and when damaging appears in component when the valve body of servo valve in, upper cover need be opened and can repair or replace the component of damage.The utility model carries out above-mentioned improvement and makes this servo valve easy for installation in assembly process, and the component in valve body have keeped in repair rear upper cover, fixing ring and airtight pane all can be continued to use, and has so greatly reduced the cost of cost of labor and component.
Above-mentioned fixing ring is Curved ring-type is combined between two sealing ring, and sealing ring and above-mentioned closed pockets fit like a glove.
In above-mentioned arbitrary scheme, preferably, the material of described fixing ring is rubber.
In above-mentioned arbitrary scheme, preferably, a side of described upper cover is provided with S suction port; The front end of upper cover is provided with L air outlet and H air outlet; The rear end of upper cover is provided with L air outlet.
In above-mentioned arbitrary scheme, preferably, described lower valve body Yi Ce end is provided with air input joint.
In above-mentioned arbitrary scheme, preferably, in described lower valve body, be provided with cavity, in this cavity, be provided with piston rod.
In above-mentioned arbitrary scheme, preferably, the lower end of described lower valve body is provided with P relief opening.
In above-mentioned arbitrary scheme, preferably, described S suction port, L air outlet, H air outlet and P air outlet all communicate with the cavity of lower valve body.
In above-mentioned arbitrary scheme, preferably, the middle part of described piston rod has vertical valve hole.
In above-mentioned arbitrary scheme, preferably, described valve is provided with valve in hole, is provided with O type circle between the top of this valve and valve hole.
In above-mentioned arbitrary scheme, preferably, the outside of described valve is provided with valve spring.
In above-mentioned arbitrary scheme, preferably, the lower end of described valve is provided with valve position limit socket.
In above-mentioned arbitrary scheme, preferably, the bottom of described piston rod has pressure hole.
In above-mentioned arbitrary scheme, preferably, described pressure hole communicates with valve hole.
In above-mentioned arbitrary scheme, preferably, the lower end of described piston rod is placed in the cavity of base, is provided with base spring in this cavity.
While not having air pressure to enter in the cavity of lower valve body, base spring, in original state, is resisted against the bottom of piston rod, and the bottom of piston rod is provided with plain washer and Y-shaped ring is blocked the pressure hole of piston rod bottom.When having air pressure to enter in the cavity of lower valve body, plain washer and the Y-shaped ring base spring in base that is compressed, plain washer and Y-shaped ring leave piston rod, and the pressure hole in piston rod is opened, and air pressure enters in this pressure hole.
In above-mentioned arbitrary scheme, preferably, the bottom of described piston rod and base spring joint are provided with Y-shaped ring.This Y-shaped ring seals the gas entering in base cavity, in addition, in the side of Y-shaped ring, is provided with plain washer, and this plain washer is resisted against the end of base spring, avoids base spring to cause damage to Y-shaped ring.
In above-mentioned arbitrary scheme, preferably, described base is fixed in the cavity of lower valve body with back-up ring by hole, and the joint of base and lower valve body is provided with 0 type circle.
In sum, in servo valve of the present utility model, between upper cover and lower valve body, be provided with airtight pane, on described upper cover and airtight pane surface of contact, by extrusion process, be processed with special-shaped ring recess, at special-shaped ring recess, be built-in with fixing ring, by above-mentioned improvement, servo valve Standard process of the present utility model is simplified, reduced the man-hour of assembling, reduced cost.In addition, when part component lost efficacy, can directly change the component of damage, upper cover and airtight pane can continue to use, and have reduced the cost that secondary is done over again.
Accompanying drawing explanation
Fig. 1 is the sectional view according to servo valve of the present utility model.
Fig. 2 is according to the plan view of a preferred embodiment of the servo valve shown in Fig. 1 of the present utility model.
Fig. 3 is according to the broken away view of a preferred embodiment of the servo valve shown in Fig. 1 of the present utility model.
Fig. 4 is according to the worm's eye view of upper cover in a preferred embodiment of the servo valve shown in Fig. 1 of the present utility model.
Attached number in the figure:
Back-up ring 1 for hole, upper cover 2, special-shaped ring recess 21, O type circle 3, plain washer 4, Y-shaped ring 5, valve 6, pressure hole 7, fixing ring 8, airtight pane 9, lower valve body 10, piston rod 11, air input joint 12, valve spring 13, valve position limit socket 14, base spring 15, base 16.
Embodiment
The following description is only exemplary and be not in order to limit the disclosure, application or purposes in essence.The embodiment that the utility model spring ring is pressed into the pressing tool of ball cup below in conjunction with Figure of description is further described.
As depicted in figs. 1 and 2, servo valve of the present utility model, comprises upper cover 2 and lower valve body 10, and described upper cover 2 is placed in lower valve body 10 top and is bolted together; Between upper cover 2 and lower valve body 10, be provided with airtight pane 9, on described upper cover 2 and airtight pane 9 surface of contact, by extrusion process, be processed with special-shaped ring recess 21.
Its working principle is: gas enters in the cavity of valve body 10 from the S suction port of upper cover 2, then passes through piston rod 11, next enters in valve 6, and valve 6 is opened, and gas enters into the H air outlet of upper cover 2 through airtight pane 9 Shang holes, finally discharge.
When control air pressure enters from air input joint 12, air pressure can promote the Y-shaped ring 5 of piston rod 11 bottoms, at this moment Y-shaped ring 5 will push base spring 15, this base spring 15 is extruded in the inner chamber of base 16, this at present the pressure hole 7 of valve body 10 lower ends be opened, air pressure enters in pressure hole 7, under the thrust of air pressure, be placed in the upwards operation of valve 6 in valve spring 13, leave valve position limit socket 14, air pressure enters into L air outlet, the air pressure that enters place, L air outlet is divided into two-way, discharge the L air outlet from upper cover 2 at S suction port place on one tunnel, discharge from the P air outlet of lower valve body 10 lower ends at place, H air outlet on another road.
In the present embodiment, described lower valve body 10Yi Ce end is provided with air input joint 12.
In the present embodiment, in described lower valve body 10, be provided with cavity, in this cavity, be provided with piston rod 11.
In the present embodiment, described lower valve body 10 lower end is provided with P relief opening.
In the present embodiment, the middle part of described piston rod 11 has vertical valve hole.
In the present embodiment, described valve is provided with valve 6 in hole, is provided with O type circle 3 between the top of this valve 6 and valve hole.
In the present embodiment, the outside of described valve 6 is provided with valve spring 13.
In the present embodiment, the lower end of described valve 6 is provided with valve position limit socket 14.
In the present embodiment, described piston rod 11 bottom has pressure hole 7.
In the present embodiment, described pressure hole 7 communicates with valve hole.
In the present embodiment, described piston rod 11 lower end is placed in the cavity of base 16, is provided with base spring 15 in this cavity.When not having air pressure to enter in the cavity of lower valve body 10, base spring 15, in original state, is resisted against the bottom of piston rod 11, and the bottom of piston rod 11 is provided with plain washer 4 and Y-shaped ring 5 is blocked the pressure hole 7 of piston rod 11 bottoms.When having air pressure to enter in the cavity of lower valve body 10, plain washer 4 and the Y-shaped ring 5 base spring 15 in base 16 that is compressed, plain washer 4 and Y-shaped ring 5 leave piston rod 11, and the pressure hole 7 in piston rod 11 is opened, and air pressure enters in this pressure hole 7.
In the present embodiment, the bottom of described piston rod 11 and base spring 15 joints are provided with Y-shaped ring 5.The gas that 5 pairs of this Y-shaped rings enter in base 16 cavitys seals, and in addition, in the side of Y-shaped ring 5, is provided with plain washer 4, and this plain washer 4 is resisted against base spring 15 end, avoids 15 pairs of Y-shaped rings 5 of base spring to cause damage.
In the present embodiment, described base 16 uses back-up ring 1 to be fixed in the cavity of lower valve body 10 by hole, and base 16 is provided with 0 type circle 3 with lower valve body 10 joint.
As shown in Figure 3, according to the broken away view of a preferred embodiment of the servo valve shown in Fig. 1 of the present utility model, a side of upper cover 2 is provided with S suction port; The front end of upper cover 2 is provided with L air outlet and H air outlet; The rear end of upper cover 2 is provided with L air outlet.
In the present embodiment, described S suction port, L air outlet, H air outlet and P air outlet all communicate with the cavity of lower valve body 10.
Fig. 4 is according to the worm's eye view of upper cover in a preferred embodiment of the servo valve shown in Fig. 1 of the present utility model, in special-shaped ring recess 21, is provided with fixing ring 8.The shape of fixing ring 8 is identical with the shape of special-shaped ring recess 21, and the wall thickness of fixing ring 8 equals or be slightly smaller than the width of the groove of special-shaped ring recess 21.
In the present embodiment, the material of described fixing ring 8 is rubber.In the utility model, select natural rubber, isoprene rubber, Nitrile Rubber, styrene butadiene rubber and butadiene rubber etc. all can.Why selecting rubber material, is because rubber material has the high elasticity polymer material of reversible deformation.At room temperature high resilience can produce compared with large deformation under very little External Force Acting, removes resilient after external force.Rubber belongs to complete amorphous polymer, and its glass transition temperature is low, and molecular weight is often very large, is greater than hundreds of thousands.
In sum, in servo valve of the present utility model, between upper cover 2 and lower valve body 10, be provided with airtight pane 9, on described upper cover 2 and airtight pane 9 surface of contact, by extrusion process, be processed with special-shaped ring recess 21, at special-shaped ring recess 21, be built-in with fixing ring 8, by above-mentioned improvement, servo valve Standard process of the present utility model is simplified, reduced the man-hour of assembling, reduced cost.In addition, when part component lost efficacy, can directly change the component of damage, upper cover 2 and airtight pane 9 can continue to use, and have reduced the cost that secondary is done over again.
It will be apparent to those skilled in the art that servo valve of the present utility model comprises the combination in any of each several part in this specification.As space is limited and in order to make specification simple and clear, at this, these combinations not to be introduced one by one in detail, but seen after this specification, the scope of the present utility model that the combination in any of the each several part consisting of this specification forms is self-evident.
Claims (17)
1. a servo valve, comprises upper cover and lower valve body, and described upper cover is placed in the top of lower valve body and is bolted together; Between upper cover and lower valve body, be provided with airtight pane, it is characterized in that: on described upper cover and airtight pane surface of contact, by extrusion process, be processed with special-shaped ring recess.
2. servo valve as claimed in claim 1, is characterized in that: in described special-shaped ring recess, be provided with fixing ring.
3. servo valve as claimed in claim 2, is characterized in that: the material of described fixing ring is rubber.
4. servo valve as claimed in claim 1, is characterized in that: a side of described upper cover is provided with S suction port; The front end of upper cover is provided with L air outlet and H air outlet; The rear end of upper cover is provided with L air outlet.
5. servo valve as claimed in claim 1, is characterized in that: described lower valve body Yi Ce end is provided with air input joint.
6. servo valve as claimed in claim 1, is characterized in that: in described lower valve body, be provided with cavity, in this cavity, be provided with piston rod.
7. servo valve as claimed in claim 1, is characterized in that: the lower end of described lower valve body is provided with P relief opening.
8. servo valve as claimed in claim 4, is characterized in that: described S suction port, L air outlet, H air outlet and P air outlet all communicate with the cavity of lower valve body.
9. servo valve as claimed in claim 6, is characterized in that: the middle part of described piston rod has vertical valve hole.
10. servo valve as claimed in claim 9, is characterized in that: described valve is provided with valve in hole, is provided with O type circle between the top of this valve and valve hole.
11. servo valves as claimed in claim 10, is characterized in that: the outside of described valve is provided with valve spring.
12. servo valves as claimed in claim 10, is characterized in that: the lower end of described valve is provided with valve position limit socket.
13. servo valves as claimed in claim 6, is characterized in that: the bottom of described piston rod has pressure hole.
14. servo valves as claimed in claim 13, is characterized in that: described pressure hole communicates with valve hole.
15. servo valves as claimed in claim 6, is characterized in that: the lower end of described piston rod is placed in the cavity of base, is provided with base spring in this cavity.
16. servo valves as claimed in claim 15, is characterized in that: the bottom of described piston rod and base spring joint are provided with Y-shaped ring.
17. servo valves as claimed in claim 15, is characterized in that: described base is fixed in the cavity of lower valve body with back-up ring by hole, and the joint of base and lower valve body is provided with 0 type circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320395360.7U CN203394910U (en) | 2013-07-04 | 2013-07-04 | Follow-up valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320395360.7U CN203394910U (en) | 2013-07-04 | 2013-07-04 | Follow-up valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203394910U true CN203394910U (en) | 2014-01-15 |
Family
ID=49906445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320395360.7U Expired - Fee Related CN203394910U (en) | 2013-07-04 | 2013-07-04 | Follow-up valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203394910U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570223A (en) * | 2016-02-26 | 2016-05-11 | 龙工（上海）精工液压有限公司 | Sealing structure for preventing combination surfaces of chip type multi-way valves from leaking oil |
-
2013
- 2013-07-04 CN CN201320395360.7U patent/CN203394910U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570223A (en) * | 2016-02-26 | 2016-05-11 | 龙工（上海）精工液压有限公司 | Sealing structure for preventing combination surfaces of chip type multi-way valves from leaking oil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20200704 |