CN2890537Y - Positioning unloading valve - Google Patents
Positioning unloading valve Download PDFInfo
- Publication number
- CN2890537Y CN2890537Y CN 200520140288 CN200520140288U CN2890537Y CN 2890537 Y CN2890537 Y CN 2890537Y CN 200520140288 CN200520140288 CN 200520140288 CN 200520140288 U CN200520140288 U CN 200520140288U CN 2890537 Y CN2890537 Y CN 2890537Y
- Authority
- CN
- China
- Prior art keywords
- valve seat
- hole
- spool
- valve
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Safety Valves (AREA)
Abstract
The utility model discloses a positioning unloading valve which comprises a valve core, a valve seat, a spring and a compression cover. The outer wall of the valve seat is provided with outer thread, the left hole diameter is smaller than the right hole diameter on the valve seat, the right hole is provided with inner thread, an inner taper hole connects the left hole with the right hole. The valve core is a step axis with a taper axis section. The spring is a compression spring, the two ends of the spring are respectively provided with a valve core which is arranged in the valve seat chamber, the taper axis section of the left valve core can match the inner taper hole of the valve seat. The right end of the compression cover is provided with radial slot with a through-hole. The left side of the through-hole is taper hole, the thread outside the compression cover is connected with the inner thread of the right hole of the valve seat, and the taper axis section of the right valve core can match the taper hole inside the compression cover. When the outer force is larger than the elastic force of the spring, the valve core in the both sides can be pushed to contract inwards to form the positioning unloading valve; when the outer force is smaller than the elastic force of the spring, the valve core can automatically return and close. The utility model has the advantages of simple structure, reliable sealing and easy startup, and the utility model is applicable to be used as an inner unloading valve in the driving steering unit of automobile.
Description
Technical field
The utility model relates to a kind of control valve unit, and specifically, the utility model relates to a kind of unloading valve.
Background technique
The automobile power steering that disposes on commercially available car, the medium and heavy automobile is a kind of device by the motor turning of pressurized oil system boosting.The automobile power steering of prior art turns to light and flexible, but raises because of the resistance increase makes pressurized oil system pressure when going to limit position, easily causes pressurized oil system and other member to damage.Although the automobile power steering of prior art is provided with relief arrangement, off-load in time, the normal operation of protection automobile power steering.But prior art is complicated by the off-load structure of off-load push rod pushing tow steel ball, and manufacture difficulty is big, and poor sealing performance, and off-load is not thorough.
The model utility content
The utility model proposes a kind of simple in structure, easy to manufacture, good seal performance, the location unloading valve with straight tube elasticity double spool structure at the deficiencies in the prior art part.
The utility model is achieved by following technical proposals:
The utility model location unloading valve, it is made of jointly spool, valve seat, spring, gland; Described valve seat is a cylindrical shape, and outer wall is provided with outside thread, and aperture, a valve seat left side is less than right aperture, and right aperture is provided with internal thread, is joined by internal taper hole between the left and right endoporus; Described spool is a kind of ladder oblique crank Z, and two ends are cylinder axis, and intermediate section is the tapering axle; Described spring is a kind of cylindrical pressure spring, both ends of the spring is set with a spool and is placed in the valve base cavity, the thin diameter section of the spool in left side is stretched out 2.5～8mm from valve seat left side nose end, the spool in left side matches with the valve seat internal taper hole with the tapering shaft part, described gland is flange-like, the right side is provided with the radial opening groove, in establish through hole, the through hole left end is a taper hole, gland matches with the right aperture of valve seat internal thread with outside thread and is connected, the spool on right side matches with the gland internal taper hole with the tapering shaft part, and the thin diameter section of the spool on right side is stretched out 2.5～8mm outside the right nose end of gland.
Valve seat left end endoporus and gland endoporus are measure-alike in the said structure, the thin diameter section nominal size of spool is less than valve seat left end endoporus or gland endoporus nominal size, the elastic force of described spring keep the two ends spool respectively with being sealed and matched of valve body and gland, one end valve core is pressed into not conducting location unloading valve, and the two ends spool all is pressed into could conducting location unloading valve.
The utility model compared with prior art has following good effect:
1, valve arrangement is simple, easy to manufacture, easy for installation;
2, kept the taper fit of spool and valve seat and gland by the elastic force of spring, selfsealings are good.
Description of drawings
Accompanying drawing 1 is the structural representation of the utility model location unloading valve.
Embodiment
Below in conjunction with accompanying drawing model utility is described further.
The utility model location unloading valve, it is made of jointly spool 1, valve seat 2, spring 3, gland 4.Described valve seat 2 is a kind of cylindrical structures, and outer wall is provided with outside thread and is connected with the mounting point, and valve seat 2 left apertures are less than right aperture, and right aperture is provided with internal thread, is joined by internal taper hole between the left and right endoporus.Described spool 1 is a kind of ladder oblique crank Z, and two ends are cylinder axis, and intermediate section is the tapering axle.Described spring 3 is a kind of cylindrical pressure springs, spring 3 two ends are set with a spool 1 and are placed in valve seat 2 inner chambers, the thin diameter section of the spool in left side is stretched out 5mm from valve seat 2 left holes, the spool 1 in left side matches with valve seat 2 internal taper holes with the tapering shaft part, gland 4 matches with valve seat 2 internal threads with outside thread and is connected, the spool 1 on right side is matched with gland 4 internal taper holes with the tapering shaft part, the thin diameter section of the spool 1 on right side is stretched out 5mm outside gland 4 right-hand members, the tapering shaft part that elastic force keeps spool 1 respectively with the internal taper hole fitted seal of valve seat 2 and gland 4.When external force can contract in the pushing tow spool 1 greater than the elastic force of spring 3, it is conducting location unloading valve that two ends spool 1 contracts in all.Remove the effect of external force,, keep fitted seal with the valve seat 2 and the gland 4 of pairing mutually at the resilient force lower valve core 1 of spring 3 self-return still to spool 1.The utility model is simple in structure, sealing is reliable, unlatching is convenient, is particularly suitable for doing the location unloading valve of automobile power steering.
Claims (3)
1, a kind of location unloading valve, it by spool (1), valve seat (2), spring (3), gland (4) is common constitutes; It is characterized in that: described valve seat (2) is cylindrical shape, and outer wall is provided with outside thread, and the left aperture of valve seat (2) is less than right aperture, and right aperture is provided with internal thread, is joined by internal taper hole between the left and right endoporus; Described spool (1) is a kind of ladder oblique crank Z, and two ends are cylinder axis, and intermediate section is the tapering axle; Described spring (3) is a kind of cylindrical pressure spring, spring (3) two ends are set with a spool (1) and are placed in valve seat (2) inner chamber, the thin diameter section of the spool (1) in left side is stretched out 2.5～8mm from the left nose end of valve seat (2), and the spool in left side (1) matches with valve seat (2) internal taper hole with the tapering shaft part; Described gland (4) is flange-like, the right side is provided with the radial opening groove, in establish through hole, the through hole left end is a taper hole, gland (4) matches with the right aperture of valve seat (2) internal thread with outside thread and is connected, the spool on right side (1) matches with gland (4) internal taper hole with the tapering shaft part, and the thin diameter section of the spool on right side (1) is stretched out 2.5～8mm outside the right nose end of gland (4).
2, location according to claim 1 unloading valve, it is characterized in that: described valve seat (2) left end endoporus and gland (4) endoporus are measure-alike.
3, location according to claim 1 unloading valve is characterized in that: the thin diameter shaft part nominal size of described spool (1) is less than valve seat (2) left end endoporus or gland (4) endoporus nominal size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520140288 CN2890537Y (en) | 2005-12-27 | 2005-12-27 | Positioning unloading valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520140288 CN2890537Y (en) | 2005-12-27 | 2005-12-27 | Positioning unloading valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2890537Y true CN2890537Y (en) | 2007-04-18 |
Family
ID=38021200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520140288 Expired - Fee Related CN2890537Y (en) | 2005-12-27 | 2005-12-27 | Positioning unloading valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2890537Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486307A (en) * | 2013-09-28 | 2014-01-01 | 南京东华汽车转向器有限公司 | Steering gear oil nozzle plug |
-
2005
- 2005-12-27 CN CN 200520140288 patent/CN2890537Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486307A (en) * | 2013-09-28 | 2014-01-01 | 南京东华汽车转向器有限公司 | Steering gear oil nozzle plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu Gangyang Power Steering Factory Assignor: Jiangsu Gangyang Stock Co., Ltd. Contract fulfillment period: 2009.7.20 to 2025.12.26 Contract record no.: 2009320001430 Denomination of utility model: Positioning unloading valve Granted publication date: 20070418 License type: Exclusive license Record date: 20090807 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.7.20 TO 2025.12.26; CHANGE OF CONTRACT Name of requester: JIANGSU GANGYANG POWE REDIRECTOR FACTORY Effective date: 20090807 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070418 Termination date: 20100127 |