CN201787150U - Pressure limiting valve for automobile circulating ball type power steering gears - Google Patents
Pressure limiting valve for automobile circulating ball type power steering gears Download PDFInfo
- Publication number
- CN201787150U CN201787150U CN2010205262667U CN201020526266U CN201787150U CN 201787150 U CN201787150 U CN 201787150U CN 2010205262667 U CN2010205262667 U CN 2010205262667U CN 201020526266 U CN201020526266 U CN 201020526266U CN 201787150 U CN201787150 U CN 201787150U
- Authority
- CN
- China
- Prior art keywords
- hole
- spool
- upper shell
- spring
- inner chamber
- 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
Links
Images
Landscapes
- Safety Valves (AREA)
Abstract
The utility model belongs to the technology of automobile power steering gears, relates to an improvement for automobile circulating ball type power steering gears, and particularly relates to a pressure limiting valve. The pressure limiting valve comprises a valve casing and a spring (3), wherein a cylindrical upper casing (1) is connected and combined with a cylindrical lower casing (4) so as to form the valve casing. The pressure limiting valve is characterized in that an inner cavity of the upper casing (1) is a step hole, the diameter of the upper section of the step hole is smaller than that of the lower section, a cylindrical spool (5) arranged in the inner cavity of the upper casing (1) is disposed in a center hole (1a) of the upper end face and keeps in clearance fit, the upper end of the spring (3) is butted against the lower surface of a limiting disc (5c), and a center blind hole of the upper end face of the spool (5) is communicated with a radial through hole (5b) vertically. The pressure limiting valve has the advantages that the pressure limiting valve can not generate noise when turned on and turned off, so that comfort level and operating handfeel of driving are improved greatly.
Description
Technical field
The utility model belongs to the automobile power steering technology, relates to being used for the improvement of circulating ball type automobile power steering pressure-limit valve.
Background technique
The structure of the existing pressure-limit valve that is used for the circulating ball type automobile power steering is referring to Fig. 1, and it is made up of valve casing, steel ball 2 and spring 3 that columnar upper shell 1 and columniform lower shell body 4 connect to form.In the upper-end surface of upper shell 1 center hole 1a is arranged, 2～4 outage 1b that are uniformly distributed along the circumference are arranged on the cylndrical surface at upper shell 1 middle part, there is central blind hole the upper-end surface of lower shell body 4, and the lower end of upper shell 1 is inserted in the central blind hole of lower shell body 4 upper-end surfaces and kept Spielpassung.Steel ball 2 is positioned at the inner chamber top of upper shell 1, spring 3 is positioned at the bottom of upper shell 1 inner chamber, steel ball 2 lower ends are withstood in the upper end of spring 3, the upper end closed of steel ball 2 is lived in the lower end mouth of housing 1 upper-end surface center hole 1a, withstand at the bottom of the hole of lower shell body 4 central blind holes the lower end of spring 3, the external cylindrical surface of lower shell body 4 is useful on the screw thread and the seal groove of connection, and seal ring is arranged in seal groove.After this pressure-limit valve was installed in the mounting hole of circulating ball type automobile power steering, the screw thread of lower shell body 4 and the engagement of the internal thread of mounting hole were fixed on upper shell 1 in the mounting hole.The center hole 1a of upper shell 1 upper-end surface is a liquid entering hole, is communicated with the oil-feed oil circuit of circulating ball type automobile power steering, and the outage 1b of upper shell 1 is communicated with circulating ball type automobile power steering oil return circuit.When oil pressure surpassed rated pressure, pressure-limit valve was opened oil pressure is descended; When oil pressure was lower than rated pressure, pressure-limit valve cut out.Its shortcoming is: when pressure-limit valve opens and closes, because the vibration of steel ball 2 produces very big noise, and the travelling comfort that influence is driven.
Summary of the invention
The purpose of this utility model is: propose a kind of pressure-limit valve that is used for the circulating ball type automobile power steering that can not produce noise, to improve the travelling comfort of driving.
The technical solution of the utility model is: the pressure-limit valve that is used for the circulating ball type automobile power steering, comprise the valve casing and the spring that connect to form by columnar upper shell and columniform lower shell body, there is center hole upper-end surface at upper shell, on the cylndrical surface at upper shell middle part, 2～4 outages that are uniformly distributed along the circumference are arranged, there is central blind hole the upper-end surface of lower shell body, the lower end of upper shell is inserted in the central blind hole of lower shell body upper-end surface and is kept Spielpassung, spring is positioned at the bottom of upper shell inner chamber, withstand at the bottom of the hole of lower shell body central blind hole the lower end of spring, the external cylindrical surface of lower shell body is useful on the screw thread and the seal groove of connection, and seal ring is arranged in seal groove; It is characterized in that,
(1) inner chamber of upper shell is the step hole of an epimere diameter less than hypomere, and the epimere small diameter bore is the upper-end surface center hole, and the axial length of this upper-end surface center hole is not less than 10mm;
(2) cylindrical spool is arranged, there is the spacing disk of a diameter greater than spool the lower end of spool, spacing disk is coaxial and be connected to integral body with spool, spool is positioned at the upper-end surface center hole and keeps Spielpassung, spacing disk is arranged in the large diameter hole of upper shell inner chamber, the step end face of the step end face of spacing disk and upper shell inner chamber is fitted, and the lower surface of spacing disk is withstood in the upper end of spring; A central blind hole is arranged in the upper-end surface of spool, a radial direction through hole is arranged on the cylndrical surface of spool, radial direction through hole connects with the lower end of central blind hole is vertical, and the seal spool groove is arranged on the cylndrical surface of spool, above the radial direction through hole, and valve core seal ring is installed in the seal spool groove.
The utility model has the advantages that: when pressure-limit valve opens and closes, can not produce noise, improve the travelling comfort of driving greatly.
Description of drawings
Fig. 1 is existing a kind of structural representation that is used for the pressure-limit valve of circulating ball type automobile power steering.
Fig. 2 is a structural representation of the present utility model.
Embodiment
Below the utility model is described in further details.Referring to Fig. 2, the pressure-limit valve that is used for the circulating ball type automobile power steering, comprise the valve casing and the spring 3 that connect to form by columnar upper shell 1 and columniform lower shell body 4, in the upper-end surface of upper shell 1 center hole 1a is arranged, 2～4 outage 1b that are uniformly distributed along the circumference are arranged on the cylndrical surface at upper shell 1 middle part, there is central blind hole the upper-end surface of lower shell body 4, the lower end of upper shell 1 is inserted in the central blind hole of lower shell body 4 upper-end surfaces and is kept Spielpassung, spring 3 is positioned at the bottom of upper shell 1 inner chamber, withstand at the bottom of the hole of lower shell body 4 central blind holes the lower end of spring 3, the external cylindrical surface of lower shell body 4 is useful on the screw thread and the seal groove of connection, and seal ring is arranged in seal groove; It is characterized in that,
(1) inner chamber of upper shell 1 is the step hole of an epimere diameter less than hypomere, and the epimere small diameter bore is upper-end surface center hole 1a, and the axial length of this upper-end surface center hole 1a is not less than 10mm;
(2) cylindrical spool 5 is arranged, there is the spacing disk 5c of a diameter greater than spool 5 lower end of spool 5, spacing disk 5c and spool 5 are coaxial and be connected to integral body, spool 5 is positioned at upper-end surface center hole 1a and keeps Spielpassung, spacing disk 5c is arranged in the large diameter hole of upper shell 1 inner chamber, the step end face of the step end face of spacing disk 5c and upper shell 1 inner chamber is fitted, and the lower surface of spacing disk 5c is withstood in the upper end of spring 3; A central blind hole 5a is arranged in the upper-end surface of spool 5, a radial direction through hole 5b is arranged on the cylndrical surface of spool 5, radial direction through hole 5b connects with the lower end of central blind hole 5a is vertical, on the cylndrical surface of spool 5, above the radial direction through hole 5b seal spool groove is arranged, valve core seal ring 6 is installed in the seal spool groove.
Changes in flow rate during for mild the unlatching, the lower end mouth of upper shell 1 inner chamber small diameter bore is up-small and down-big inner conical surface, the lower end mouth of this conical surface is less than the diameter of spacing disk 5c; Simultaneously, the 5b aperture on spool 5 has a circular groove, and the width of circular groove is slightly larger than the diameter in 5b hole, and there is a up-small and down-big outer conical surface below of circular groove.
Working principle of the present utility model is: by adjusting the rigidity of limiting valve spring 3, obtain a suitable pressure limiting valve opening pressure, when the filler opening pressure of circulation ball automobile power steering reaches pressure limiting valve opening pressure, hydraulic oil is by the upper-end surface center hole 1a of upper shell 1, back down spool 5 and it is moved down, make the radial hole 5b on the spool 5 and the large diameter hole of upper shell 1 inner chamber be communicated with, liquid stream flows out by the radial direction through hole 5b on spool 5 cylndrical surface.Because on the spool 5 seal ring 6 is housed, it is to the mobile generation damping function of spool 5, in addition, the lower end mouth of upper shell 1 inner chamber small diameter bore has the up-small and down-big conical surface, changes in flow rate in the time of can opening gently, like this, the noise that has produced when just having eliminated the pressure-limit valve opening and closing.
Claims (2)
1. the pressure-limit valve that is used for the circulating ball type automobile power steering, comprise the valve casing and the spring [3] that connect to form by columnar upper shell [1] and columniform lower shell body [4], in the upper-end surface of upper shell [1] center hole [1a] is arranged, on the cylndrical surface at upper shell [1] middle part, 2～4 outages [1b] that are uniformly distributed along the circumference are arranged, there is central blind hole the upper-end surface of lower shell body [4], the lower end of upper shell [1] is inserted in the central blind hole of lower shell body [4] upper-end surface and is kept Spielpassung, spring [3] is positioned at the bottom of upper shell [1] inner chamber, withstand at the bottom of the hole of lower shell body [4] central blind hole the lower end of spring [3], the external cylindrical surface of lower shell body [4] is useful on the screw thread and the seal groove of connection, and seal ring is arranged in seal groove; It is characterized in that,
(1) inner chamber of upper shell [1] is the step hole of an epimere diameter less than hypomere, and the epimere small diameter bore is upper-end surface center hole [1a], and the axial length of this upper-end surface center hole [1a] is not less than 10mm;
(2) cylindrical spool [5] is arranged, there is the spacing disk [5c] of a diameter greater than spool [5] lower end of spool [5], spacing disk [5c] is coaxial and be connected to integral body with spool [5], spool [5] is positioned at upper-end surface center hole [1a] and keeps Spielpassung, spacing disk [5c] is arranged in the large diameter hole of upper shell [1] inner chamber, the step end face of the step end face of spacing disk [5c] and upper shell [1] inner chamber is fitted, and the lower surface of spacing disk [5c] is withstood in the upper end of spring [3]; In the upper-end surface of spool [5] central blind hole [5a] is arranged, a radial direction through hole [5b] is arranged on the cylndrical surface of spool [5], the vertical perforation in lower end of radial direction through hole [5b] and central blind hole [5a], on the cylndrical surface of spool [5], above the radial direction through hole [5b] the seal spool groove is arranged, valve core seal ring [6] is installed in the seal spool groove.
2. pressure-limit valve according to claim 1 is characterized in that, the lower end mouth of upper shell [1] inner chamber small diameter bore is the up-small and down-big conical surface, and the lower end mouth of this conical surface is less than the diameter of spacing disk [5c].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205262667U CN201787150U (en) | 2010-09-10 | 2010-09-10 | Pressure limiting valve for automobile circulating ball type power steering gears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205262667U CN201787150U (en) | 2010-09-10 | 2010-09-10 | Pressure limiting valve for automobile circulating ball type power steering gears |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201787150U true CN201787150U (en) | 2011-04-06 |
Family
ID=43819113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205262667U Expired - Fee Related CN201787150U (en) | 2010-09-10 | 2010-09-10 | Pressure limiting valve for automobile circulating ball type power steering gears |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201787150U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104321573A (en) * | 2012-05-23 | 2015-01-28 | 罗伯特·博世有限公司 | Pressure limiting valve and fuel injecion plant for an internal combustion engine comprising said pressure limiting valve |
| CN108869761A (en) * | 2018-09-17 | 2018-11-23 | 东莞市奥垦汽车泵业有限公司 | A kind of mute improvement control valve of oil pump |
-
2010
- 2010-09-10 CN CN2010205262667U patent/CN201787150U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104321573A (en) * | 2012-05-23 | 2015-01-28 | 罗伯特·博世有限公司 | Pressure limiting valve and fuel injecion plant for an internal combustion engine comprising said pressure limiting valve |
| CN108869761A (en) * | 2018-09-17 | 2018-11-23 | 东莞市奥垦汽车泵业有限公司 | A kind of mute improvement control valve of oil pump |
| CN108869761B (en) * | 2018-09-17 | 2024-03-15 | 东莞珀力伟动力科技有限公司 | Mute improved control valve of oil pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103090070B (en) | Piloted reducer | |
| CN102444637A (en) | Plug-in overflow valve | |
| CN201787150U (en) | Pressure limiting valve for automobile circulating ball type power steering gears | |
| CN102454650B (en) | Hydraulic differential pilot opening mechanism | |
| CN205618460U (en) | Hydraulic pressure cone valve of case rear end damping pressure regulating | |
| CN205936935U (en) | Engine injection pump | |
| CN201606543U (en) | One-way valve | |
| CN203413174U (en) | Delayed brake valve for rotary motor of excavator | |
| CN204358117U (en) | With the gas spray valve of lubricating structure | |
| CN201433989Y (en) | Plug screw | |
| CN201087644Y (en) | Hinge damper of furniture door | |
| CN109654282B (en) | Large-flow nozzle-baffle structure | |
| CN204358131U (en) | With the gas spray valve of damping mechanism | |
| CN207406780U (en) | A kind of flow control valve | |
| CN104482231B (en) | Gas injection valve with buffer mechanism | |
| CN205388186U (en) | Type of making an uproar disk seat falls | |
| CN203216169U (en) | Improved electronic expansion valve | |
| CN203395245U (en) | Ball valve | |
| CN209977347U (en) | Axial flow damping type check valve | |
| CN204628574U (en) | A kind of nozzle flow control valve | |
| CN205001604U (en) | Idle call stop valve that inclines out | |
| CN204145159U (en) | Electric motor end cap and motor, booster pump | |
| CN203384408U (en) | Stainless steel ball valve | |
| CN215949989U (en) | Variable vane pump cover one-way structure | |
| CN219911531U (en) | Self-lubricating bearing seat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: YUBEI STEERING SYSTEM CO., LTD. Free format text: FORMER OWNER: YUBEI (XINXIANG) AUTOMOTIVE POWER STEERING GEAR CO., LTD. Effective date: 20120618 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120618 Address after: 453003 No. 322 Heping Avenue, Henan, Xinxiang Patentee after: Yubei Steering System Co., Ltd. Address before: 453003 No. 322 Heping Avenue, Henan, Xinxiang Patentee before: Yubei (Xinxiang) Power Steering System Co., Ltd. |
|
| 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: 20110406 Termination date: 20180910 |