CN203615037U - Oil charge valve and oil tank provided with same - Google Patents
Oil charge valve and oil tank provided with same Download PDFInfo
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- CN203615037U CN203615037U CN201320875816.XU CN201320875816U CN203615037U CN 203615037 U CN203615037 U CN 203615037U CN 201320875816 U CN201320875816 U CN 201320875816U CN 203615037 U CN203615037 U CN 203615037U
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- spool
- fluid port
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Abstract
The utility model discloses an oil charge valve, which comprises a valve element, a spring and a valve body with a valve cavity, wherein a first oil port which is communicated with the valve cavity is formed in the side face of the valve body; a second oil port which is communicated with the valve cavity is formed in the left end of the valve body; the valve element and the spring are located in the valve cavity; the valve element is provided with a passage; the right end of the spring is abutted against the right end of the valve cavity; the left end of the spring is abutted against the right end of the valve element; the passage of the valve element is capable of communicating the first oil port with the second oil port; the valve element is capable of moving and compressing the spring in the valve cavity and sealing the first oil port; the second oil port is connected with an oil filling port of an oil tank; an oil gun is connected with the first oil port; lubricant enters the oil tank by the passage of the valve element; after the oil tank is full, redundant lubricant enters the valve cavity and squeezes the valve element, the valve element moves and compresses the spring to seal the first oil port, no redundant lubricant fills the oil tank, and the phenomenon of deformation, burst or the like cannot happen. The oil charge valve can be automatically stopped after the oil tank is full, and the potential safety hazard of oil tank filling is eliminated. The utility model also discloses an oil tank provided with the oil charge valve.
Description
Technical field
The utility model relates to lubrication technical field, particularly relates to a kind of priming valve.In addition, the utility model also relates to a kind of fuel tank with this priming valve.
Background technique
Oiling agent can reduce the friction ractor between transmission part, reduces surface friction drag, slows down wearing and tearing, in mechanical transmission, conventionally transmits oiling agent by lubricating fitting, and lubricating fitting comprises fuel tank and conveyer.
The kind of fuel tank is more, relatively more conventional is trunk piston formula plastic, transparent fuel tank, fuel tank is divided into grease chamber and air cavity by piston, kind of lubricant storage in grease chamber, air cavity keeps certain pressure, air cavity is exerted pressure to grease chamber by piston, makes the oiling agent in grease chamber enter conveyer, by conveyer, oiling agent is sent to and treats lubricant housings.
In lubricating fitting working procedure, need regularly to the agent of fuel tank supplemental lubrication, transparent fuel tank is convenient to observe, and can understand in time the residual capacity of oiling agent, in time for fuel tank adds oiling agent.During for fuel tank filling oiling agent, inject oiling agent by nozzle by the oil hole of end cap of gasoline tank, fill it up with after oiling agent again by plugging structure shutoff oil hole.
When nozzle is fuel tank filling oiling agent, the flow velocity of oiling agent is very large, and pressure is very high, after filling it up with, needs to stop in time.If fuel tank is filled it up with after oiling agent, operator could not stop nozzle in time, and the oiling agents that inject easily make fuel tank distortion more, even can cause the accidents such as fuel tank explosion, have potential safety hazard.
Therefore, design a kind of priming valve, while being fuel tank filling oiling agent by this priming valve, fuel tank can automatic cut-off after filling it up with.
Model utility content
The purpose of this utility model is to provide a kind of priming valve, and while being fuel tank filling oiling agent by this priming valve, fuel tank can automatic cut-off after filling it up with, and eliminates the potential safety hazard of fuel tank filling.Another object of the present utility model is to provide a kind of fuel tank with above-mentioned priming valve.
In order to realize above-mentioned technical purpose, the utility model provides a kind of priming valve, comprises spool, spring and has the valve body of valve pocket; The side of described valve body has the first hydraulic fluid port that is communicated with described valve pocket, and left end has the second hydraulic fluid port that is communicated with described valve pocket; Described spool and described spring are positioned at described valve pocket, and described spool has path; The right-hand member of described spring is supported the right-hand member of described valve pocket, and left end is supported the right-hand member of described spool; The described path of described spool can be communicated with described the first hydraulic fluid port and described the second hydraulic fluid port, and described spool can move the first hydraulic fluid port described in compression described spring shutoff in described valve pocket.
Preferably, described path comprises the first path and alternate path, and described the first path is the through hole of described spool side, and its one end can be communicated with described the first hydraulic fluid port; Described alternate path is the end-face hole of described spool, is communicated with described the first path and described the second hydraulic fluid port.
Preferably, described path comprises the first path and three-way, and described the first path is the through hole of described spool side, and its one end can be communicated with described the first hydraulic fluid port; Described three-way, through described spool and/or described valve body, is communicated with described the first path and described the second hydraulic fluid port.
Preferably, described path is the curved hole through described spool, and its first port is positioned at the side of described spool, can be communicated with described the first hydraulic fluid port, and its second port is positioned at the end face of described spool, is communicated with described the second hydraulic fluid port.
Preferably, described valve body comprises valve body and valve seat, and the two is connected to form described valve pocket, and the described valve pocket of part between described valve seat and described spool is spring chamber, and described spring is positioned at described spring chamber and right-hand member is supported described valve seat.
Preferably, the port that described path and described the first hydraulic fluid port are communicated with is provided with seal ring between the right-hand member of described spool, and described spool coordinates with described valve pocket slipper seal by described seal ring.
Preferably, described valve seat has the oil drainage hole of described spring chamber.
Preferably, described the first hydraulic fluid port is provided with pump nozzle or the dismountable plug with one-way valve.
Preferably, described the first hydraulic fluid port is provided with removable filter device.
Preferably, described the first hydraulic fluid port is provided with revolving structure.
The utility model also provides a kind of fuel tank, comprises casing and end cap, and the oil hole of described end cap is installed priming valve, and described priming valve is the priming valve described in above-mentioned any one.
The priming valve that the utility model provides, comprises spool, spring and has the valve body of valve pocket; The side of valve body has the first hydraulic fluid port that is communicated with valve pocket, and left end has the second hydraulic fluid port that is communicated with valve pocket; Spool and spring are positioned at valve pocket, and spool has path; The right-hand member of spring is supported the right-hand member of valve pocket, and left end is supported the right-hand member of spool; The path of spool can be communicated with the first hydraulic fluid port and the second hydraulic fluid port, spool can be in valve pocket mobile Compress Spring shutoff the first hydraulic fluid port.
This priming valve is arranged on to the oil hole of fuel tank, nozzle injects oiling agent by this priming valve in fuel tank, and the second hydraulic fluid port of priming valve is connected with oil hole, and nozzle is connected with the first hydraulic fluid port.When filling, oiling agent enters fuel tank by the path of spool, after fuel tank is filled it up with, unnecessary oiling agent enters valve pocket and pushes spool, after spool is extruded in valve pocket mobile Compress Spring shutoff the first hydraulic fluid port, in fuel tank, can not inject unnecessary oiling agent, there will not be distortion or the phenomenon such as explosion.After fuel tank is filled it up with, this priming valve can be realized automatic cut-off, the potential safety hazard while having eliminated fuel tank filling.
Concrete, the structure of priming valve internal path has various ways.
A kind of structure of path comprises the first path and alternate path, and the first path is the through hole of spool side, and its one end can be communicated with the first hydraulic fluid port; Alternate path is the end-face hole of spool, is communicated with the first path and the second hydraulic fluid port.
Another structure of path comprises the first path and three-way, and the first path is the through hole of spool side, and its one end can be communicated with the first hydraulic fluid port; Three-way, through spool and/or valve body, is communicated with the first path and the second hydraulic fluid port.
The structure of path can also be the curved hole through spool, and its first port is positioned at the side of spool, can be communicated with the first hydraulic fluid port, and its second port is positioned at the end face of spool, is communicated with the second hydraulic fluid port.
In above-mentioned various structure, valve body comprises valve body and valve seat, and the two is connected to form valve pocket, and the part valve pocket between valve seat and spool is spring chamber, and spring is positioned at spring chamber and right-hand member is supported valve seat.
In a kind of preferred mode, the port that path and the first hydraulic fluid port are communicated with is provided with seal ring between the right-hand member of spool, and spool coordinates with valve pocket slipper seal by seal ring.Seal ring can prevent that oiling agent from entering spring chamber.
In another kind of preferred mode, valve seat has the oil drainage hole of spring chamber.In priming valve working procedure, oiling agent may penetrate into spring chamber, if spring chamber sealing, oiling agent in spring chamber will reduce the displacement distance of spool, or spool cannot be moved, oil drainage hole can be discharged the oiling agent that infiltrates spring chamber, has guaranteed the functional reliability of priming valve.
In the respective embodiments described above, can be using the first hydraulic fluid port as filler opening, and pump nozzle or the dismountable plug with one-way valve is set.After fuel tank is filled it up with, can automatically close with the pump nozzle of one-way valve, or, while plug being provided with, plug is installed.
Further, can also be that the first hydraulic fluid port arranges removable filter device, when filling, make oiling agent pass through filter, prevent that impurity from entering priming valve and fuel tank.Concrete, the first hydraulic fluid port can also be provided with revolving structure.
The utility model also provides a kind of fuel tank, comprises casing and end cap, and the oil hole of end cap is installed priming valve, and priming valve is the priming valve described in above-mentioned any one.Because priming valve has above-mentioned technique effect, also there is corresponding technique effect therefore there is the fuel tank of this priming valve.
Accompanying drawing explanation
Fig. 1 is the structural representation of priming valve the first embodiment provided by the utility model;
Fig. 2 is the structural representation of the another kind of working state of the priming valve shown in Fig. 1;
Fig. 3 is the structural representation of priming valve the second embodiment provided by the utility model;
Fig. 4 is the structural representation of the third embodiment of priming valve provided by the utility model;
Fig. 5 is the structural representation of the 4th kind of embodiment of priming valve provided by the utility model;
Fig. 6 is the structural representation of the 5th kind of embodiment of priming valve provided by the utility model;
Fig. 7 is the structural representation of the 6th kind of embodiment of priming valve provided by the utility model;
Fig. 8 is the structural representation of the another kind of working state of the priming valve shown in Fig. 7.
Wherein, between the reference character in Fig. 1 to Fig. 8 and component names, relation is as follows one to one:
Embodiment
Core of the present utility model is to provide a kind of priming valve, and while being fuel tank filling oiling agent by this priming valve, fuel tank can automatic cut-off after filling it up with, and eliminates the potential safety hazard of fuel tank filling.Another core of the present utility model is to provide a kind of fuel tank with above-mentioned priming valve.
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.It should be noted that, the term that represents orientation is herein all take the structure of the one-way valve shown in accompanying drawing as benchmark.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of priming valve the first embodiment provided by the utility model, and Fig. 2 is the structural representation of the another kind of working state of the priming valve shown in Fig. 1.
In a kind of concrete mode of execution, the utility model provides a kind of priming valve, comprises spool 1, spring 2 and has the valve body 3 of valve pocket; The side of valve body 3 has the first hydraulic fluid port 311 that is communicated with valve pocket, and left end has the second hydraulic fluid port 312 that is communicated with valve pocket; Spool 1 and spring 2 are positioned at valve pocket, and spool 1 has path 11; The right-hand member of spring 2 is supported the right-hand member of valve pocket, and left end is supported the right-hand member of spool 1; The path 11 of spool 1 can be communicated with the first hydraulic fluid port 311 and the second hydraulic fluid port 312, and spool 1 can move the described spring 2 of compression shutoff the first hydraulic fluid port 311 in valve pocket.
The spool 1 of priming valve can move in valve pocket, and spool 1 has two valve position in valve pocket.When spool 1 is positioned at the first valve position, the left end of valve pocket supported spool 1 and is located at by spring 2, and as shown in Figure 1, now, the path 11 of spool 1 is communicated with the first hydraulic fluid port 311 and the second hydraulic fluid port 312; When spool 1 is in valve pocket when mobile Compress Spring 2, spool 1 moves to the second valve position, as shown in Figure 2, now, side shutoff first hydraulic fluid port 311 of spool 1.
When the work of this priming valve, the first hydraulic fluid port 311 and the second hydraulic fluid port 312 one in the two is as filler opening, and another one, as oil outlet, connects the oil hole of fuel tank as the one of oil outlet, connect nozzle as the one of filler opening.Wherein, relatively more conventional is that the second hydraulic fluid port 312 connects oil hole, and the first hydraulic fluid port 311 connects nozzle.
This priming valve is arranged on to the oil hole of fuel tank, nozzle injects oiling agent by this priming valve in fuel tank.When filling, spool 1 is positioned at the first valve position, and path 11 is communicated with the first hydraulic fluid port 311 and the second hydraulic fluid port 312, and oiling agent enters fuel tank by the path 11 of spool 1.After fuel tank is filled it up with, unnecessary oiling agent will enter valve pocket and push spool 1, after spool 1 is extruded in valve pocket mobile Compress Spring 2 shutoff the first hydraulic fluid port 311, spool 1 is positioned at the second valve position, refuels cut-off.When oiling, use this priming valve, can not inject unnecessary oiling agent in fuel tank, fuel tank there will not be the phenomenons such as distortion or explosion.After fuel tank is filled it up with, this priming valve can be realized automatic cut-off, the potential safety hazard while having eliminated fuel tank filling.Concrete, the structure of the path 11 of priming valve inner spool 1 has various ways.
Please refer to Fig. 3 to Fig. 6, Fig. 3 is the structural representation of priming valve the second embodiment provided by the utility model, Fig. 4 is the structural representation of the third embodiment of priming valve provided by the utility model, Fig. 5 is the structural representation of the 4th kind of embodiment of priming valve provided by the utility model, and Fig. 6 is the structural representation of the 5th kind of embodiment of priming valve provided by the utility model.
In the concrete mode of execution of the first, path 11 comprises that the first path 111 and alternate path 112, the first paths 111 are the through hole of spool 1 side, and its one end can be communicated with the first hydraulic fluid port 311; Alternate path 112 is the end-face hole of spool 1, described the first path 111 and the second hydraulic fluid port 312.Concrete structure please refer to Fig. 1 and Fig. 2.
The spool 1 of this structure, is relatively convenient to processing, can first process the first path 111, and through hole is convenient to processing, and then, at processing alternate path 112, wherein, the first path 111 can be also blind hole, can realize with alternate path 112 and being communicated with.
In the concrete mode of execution of the second, path 11 comprises that the first path 111 and three-way 113, the first paths 111 are the through hole of spool 1 side, and its one end can be communicated with the first hydraulic fluid port 311; Three-way 113, through spool 1 and/or valve body 3, is communicated with the first path 111 and the second hydraulic fluid port 312.Concrete structure please refer to Fig. 3 to Fig. 5
The path 11 that is communicated with the first hydraulic fluid port 311 and the second hydraulic fluid port 312 can be also other structures, can be the first path 111 and three-way 113 shown in Fig. 3, wherein the structure of three-way 113 is not limited to this, and the structure of three-way 113 can also be passed valve body 3, as shown in Figure 4 and Figure 5.The structure of the priming valve shown in Fig. 3 to Fig. 5, preferably the second hydraulic fluid port 312 is connected with oil hole, and after fuel tank is filled it up with, unnecessary oiling agent can directly push the top of spool 1, and spool 1 can be made a response fast, and automatic cut-off is refueled.
In the third concrete mode of execution, path 11 is the curved hole 12 through spool 1, and its first port 121 is positioned at the side of spool 1, can be communicated with the first hydraulic fluid port 311, and its second port one 22 is positioned at the end face of spool 1, is communicated with the second hydraulic fluid port 312.Concrete structure please refer to Fig. 6.
The curved hole 12 of spool 1 can process by the mode of casting, equally also can play the effect that is communicated with the first hydraulic fluid port 311 and the second hydraulic fluid port 312, the spool 1 of this structure, and when filling oiling agent, the resistance being subject to is less.
One preferred embodiment in, valve body 3 comprises valve body 31 and valve seat 32, the two is connected to form valve pocket, the part valve pocket between valve seat 32 and spool 1 is spring chamber, spring 2 is positioned at spring chamber and right-hand member is supported valve seat 32.
Further, in mode of execution, the port that path 11 and the first hydraulic fluid port 311 are communicated with is provided with seal ring between the right-hand member of spool 1, and spool 1 coordinates with valve pocket slipper seal by seal ring, and in priming valve working procedure, seal ring can prevent that oiling agent from entering spring chamber.
In another kind of further mode of execution, valve seat 32 has the oil drainage hole 321 of spring chamber.
In priming valve working procedure, oiling agent may penetrate into spring chamber, if spring chamber sealing, the oiling agent in spring chamber will reduce the displacement distance of spool 1, and oil drainage hole 321 can be discharged the oiling agent that infiltrates spring chamber, has guaranteed the functional reliability of priming valve.
Please refer to Fig. 7 and Fig. 8, Fig. 7 is the structural representation of the 6th kind of embodiment of priming valve provided by the utility model, and Fig. 8 is the structural representation of the another kind of working state of the priming valve shown in Fig. 7.
In another kind of concrete mode of execution, the side of valve body 31 has two the first hydraulic fluid ports 311 that are located along the same line, and one of them first hydraulic fluid port 311 is installed plugging structure, and another first hydraulic fluid port 311 is installed pump nozzle 33.
The first hydraulic fluid port 311 of valve body 31 sides, can obtain by modes such as casting or machinings, casting or add man-hour, sometimes for the ease of processing, can on same straight line, process two the first hydraulic fluid ports 311, while using priming valve, utilize one of them first hydraulic fluid port 311 to connect nozzle, another first hydraulic fluid port 311 of shutoff.
In the respective embodiments described above, the first hydraulic fluid port 311 and the second hydraulic fluid port 312 are in the two, and one is that another is as oil outlet as filler opening, conventionally using the first hydraulic fluid port 311 as filler opening, can pump nozzle 33 or the dismountable plug 34 with one-way valve be set at the first hydraulic fluid port 311 places.
While being provided with the pump nozzle with one-way valve, after fuel tank is filled it up with, one-way valve can be closed automatically; While being provided with dismountable plug 34, after fuel tank is filled it up with, plug 34 is installed.When oiling agent in fuel tank reduces, when oiling agent is less than the pressure of spring 2 to spool 1 applied pressure, spool 1 will be got back to the first valve position under the effect of spring force, now, the first hydraulic fluid port 311 is communicated with the second hydraulic fluid port 312, and one-way valve and plug 34 can prevent that the oiling agent in fuel tank from flowing out.
Further, can also be that the first hydraulic fluid port 311 arranges removable filter device, when filling oiling agent, make oiling agent pass through filter, can prevent that impurity from entering priming valve and fuel tank, plays the effect of protection.
In addition, in the respective embodiments described above, can also be that the first hydraulic fluid port 311 is provided with revolving structure.When oiling, nozzle is connected with the first hydraulic fluid port 311 by revolving structure.
Except above-mentioned priming valve, the utility model also provides a kind of fuel tank, comprises casing and end cap, and the oil hole of end cap is installed priming valve, and priming valve is above-mentioned priming valve.Other structures of fuel tank please refer to prior art, repeat no more herein.
Because priming valve has above-mentioned technique effect, also there is corresponding technique effect therefore there is the fuel tank of this priming valve.
Above priming valve provided by the utility model and the fuel tank with this priming valve are described in detail.Applied specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (11)
1. a priming valve, is characterized in that, comprises spool (1), spring (2) and has the valve body (3) of valve pocket; The side of described valve body (3) has the first hydraulic fluid port (311) that is communicated with described valve pocket, and left end has the second hydraulic fluid port (312) that is communicated with described valve pocket; Described spool (1) and described spring (2) are positioned at described valve pocket, and described spool (1) has path (11); The right-hand member of described spring (2) is supported the right-hand member of described valve pocket, and left end is supported the right-hand member of described spool (1); The described path (11) of described spool (1) can be communicated with described the first hydraulic fluid port (311) and described the second hydraulic fluid port (312), described spool (1) can in described valve pocket, move compression described spring (2) and shutoff described in the first hydraulic fluid port (311).
2. priming valve as claimed in claim 1, it is characterized in that, described path (11) comprises the first path (111) and alternate path (112), and described the first path (111) is the through hole of described spool (1) side, and its one end can be communicated with described the first hydraulic fluid port (311); Described alternate path (112) is the end-face hole of described spool (1), is communicated with described the first path (111) and described the second hydraulic fluid port (312).
3. priming valve as claimed in claim 1, it is characterized in that, described path (11) comprises the first path (111) and three-way (113), and described the first path (111) is the through hole of described spool (1) side, and its one end can be communicated with described the first hydraulic fluid port (311); Described three-way (113), through described spool (1) and/or described valve body (3), is communicated with described the first path (111) and described the second hydraulic fluid port (312).
4. priming valve as claimed in claim 1, it is characterized in that, described path (11) is the curved hole (12) through described spool (1), its the first port (121) is positioned at the side of described spool (1), can be communicated with described the first hydraulic fluid port (311), its the second port (122) is positioned at the end face of described spool (1), is communicated with described the second hydraulic fluid port (312).
5. the priming valve as described in claim 1 to 4 any one, it is characterized in that, described valve body (3) comprises valve body (31) and valve seat (32), the two is connected to form described valve pocket, the described valve pocket of part between described valve seat (32) and described spool (1) is spring chamber, and described spring (2) is positioned at described spring chamber and right-hand member is supported described valve seat (32).
6. priming valve as claimed in claim 5, it is characterized in that, the port that described path (11) and described the first hydraulic fluid port (311) are communicated with is provided with seal ring between the right-hand member of described spool (1), and described spool (1) coordinates with described valve pocket slipper seal by described seal ring.
7. priming valve as claimed in claim 5, is characterized in that, described valve seat (32) has the oil drainage hole (321) of described spring chamber.
8. the priming valve as described in claim 1 to 4 any one, is characterized in that, described the first hydraulic fluid port (311) is provided with pump nozzle (33) or the dismountable plug (34) with one-way valve.
9. priming valve as claimed in claim 8, is characterized in that, described the first hydraulic fluid port (311) is provided with removable filter device.
10. the priming valve as described in claim 1 to 4 any one, is characterized in that, described the first hydraulic fluid port (311) is provided with revolving structure.
11. 1 kinds of fuel tanks, comprise casing and end cap, it is characterized in that, the oil hole of described end cap is installed priming valve, and described priming valve is the priming valve described in claim 1 to 10 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875816.XU CN203615037U (en) | 2013-12-25 | 2013-12-25 | Oil charge valve and oil tank provided with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875816.XU CN203615037U (en) | 2013-12-25 | 2013-12-25 | Oil charge valve and oil tank provided with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203615037U true CN203615037U (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320875816.XU Expired - Fee Related CN203615037U (en) | 2013-12-25 | 2013-12-25 | Oil charge valve and oil tank provided with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203615037U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697314A (en) * | 2013-12-25 | 2014-04-02 | 郑州奥特科技有限公司 | Charge valve and lubricant tank with same |
| CN104197179A (en) * | 2014-09-02 | 2014-12-10 | 李祺 | Multipoint automatic oil filler of railway turnout |
| CN106402068A (en) * | 2015-07-29 | 2017-02-15 | 长城汽车股份有限公司 | Hydraulic valve |
-
2013
- 2013-12-25 CN CN201320875816.XU patent/CN203615037U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697314A (en) * | 2013-12-25 | 2014-04-02 | 郑州奥特科技有限公司 | Charge valve and lubricant tank with same |
| CN104197179A (en) * | 2014-09-02 | 2014-12-10 | 李祺 | Multipoint automatic oil filler of railway turnout |
| CN106402068A (en) * | 2015-07-29 | 2017-02-15 | 长城汽车股份有限公司 | Hydraulic valve |
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| 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 |
Granted publication date: 20140528 Termination date: 20211225 |
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| CF01 | Termination of patent right due to non-payment of annual fee |