CN102261323A - Check valve of automobile vacuum pump - Google Patents
Check valve of automobile vacuum pump Download PDFInfo
- Publication number
- CN102261323A CN102261323A CN2011101689910A CN201110168991A CN102261323A CN 102261323 A CN102261323 A CN 102261323A CN 2011101689910 A CN2011101689910 A CN 2011101689910A CN 201110168991 A CN201110168991 A CN 201110168991A CN 102261323 A CN102261323 A CN 102261323A
- Authority
- CN
- China
- Prior art keywords
- spool
- spring
- rear end
- valve core
- vent
- 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.)
- Pending
Links
Images
Landscapes
- Check Valves (AREA)
Abstract
The invention relates to a check valve of an automobile vacuum pump for an automobile vacuum boosting system. The check valve comprises a valve body; the middle part of the inner cavity of the valve body is provided with an air vent; one side of the air vent is provided with a valve core which can shift axially and is made from an elastic material; the front end surface of the valve core is provided with a seal surface which is matched with the outer ring of the air vent; the rear end of the valve core is provided with a compression spring which can compress the valve core on the air vent; the compression spring is a taper spring with a less diameter at the tail end and a greater diameter at the front end; the rear end of the compression spring is blocked and positioned by a rear stop ring which is installed fixedly; and the center of the rear stop ring is a taper hole which is matched with the taper at the rear end of the taper spring. Automatic centering of the compression spring and the positioning part of the valve body is realized through the taper fit according to the invention, the mounting accuracy is improved, the deviation of the spring and the valve core in the action process is prevented, and the reliable seal of the seal surface is ensured.
Description
Technical field
The present invention relates to a kind of vacuum automobile pump one-way valve that is used for the vacuum automobile force aid system.
Background technique
Traditional vacuum automobile pump one-way valve is usually by valve body be installed in nonreturn valve core in the valve body etc. and partly form, and the spool of rubber material is pressed in the vent place by spring, when suction pressure is greater than spring force outside the core, spool can be opened, and realizes unidirectional ventilation.In this structure, because deviation appears in the mounting point of spring and spool location easily, during one-way valve work simultaneously, also easy Off center in spring and the spool course of action, cause the face that the is sealed and matched dislocation of spool and vent, cause the phenomenon that gas leakage, oil flow backwards, influence the safety reliability of the operation of car load.
Summary of the invention
Technical problem to be solved by this invention is, a kind of simple in structure, spool accurate positioning is provided, stablizes qualitative good, the reliable vacuum automobile pump of unidirectional blocking one-way valve.
Vacuum automobile pump one-way valve of the present invention includes a valve body, the body cavity middle part is provided with vent, vent one side is provided with the spool that axially displaceable elastic material is made, the spool front-end face has the sealing surface that cooperates with the vent outer ring, and the spool rear end is provided with the pressure spring that spool can be pressed on the vent; Described pressure spring is the tapering spring that the rear end diameter is less, point diameter is bigger, and its rear end stops the location by a hard-wired back back-up ring, and back back-up ring center is a tapered hole that matches with tapering spring rear end tapering.
Described spool back segment outer wall is provided with a circular groove, and spool cooperates clamping by this circular groove with the valve core case of a ring-type, a plurality of claws of holding up that distribute on the described valve core case excircle, and the front end of described pressure spring is stuck in the inboard of claw.
The present invention makes pressure spring and valve body localization part realize self-alignment by taper fit, has improved installation precision, has prevented the skew of course of action medi-spring and spool, guarantees the reliable sealing of sealing surface.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the spool and the valve core case structural representation of the embodiment of the invention;
Fig. 3 is the lower end surface structural representation of Fig. 2.
Embodiment
As shown in the figure, this vacuum automobile pump one-way valve includes a valve body 1, the body cavity middle part is provided with vent 11, vent one side is provided with the spool 2 that axially displaceable elastic material is made, the spool front-end face has the sealing surface 21 that cooperates with the vent outer ring, and the spool rear end is provided with the pressure spring 3 that spool can be pressed on the vent; Described pressure spring is the tapering spring that the rear end diameter is less, point diameter is bigger, and its rear end stops the location by a hard-wired back back-up ring 4, and back back-up ring center is a tapered hole 41 that matches with tapering spring rear end tapering.Spool back segment outer wall is provided with a circular groove 22, and spool cooperates clamping by this circular groove with the valve core case 5 of a ring-type, a plurality of claws of holding up 51 that distribute on described valve core case 5 excircles, and the front end of pressure spring is stuck in the inboard of claw.In this one-way valve working procedure, pressure spring front end and spool location and installation, the pressure spring rear end cooperates the location by tapering with the back back-up ring, realizes self-alignment, prevents skew.
Claims (2)
1. vacuum automobile pump one-way valve, include a valve body (1), the body cavity middle part is provided with vent (11), vent one side is provided with the spool (2) that axially displaceable elastic material is made, the spool front-end face has the sealing surface (21) that cooperates with the vent outer ring, the spool rear end is provided with the pressure spring (3) that spool can be pressed on the vent, it is characterized in that: described pressure spring is that the rear end diameter is less, the tapering spring that point diameter is bigger, its rear end stops the location by a hard-wired back back-up ring (4), and back back-up ring center is a tapered hole (41) that matches with tapering spring rear end tapering.
2. vacuum automobile pump one-way valve according to claim 1, it is characterized in that: spool back segment outer wall is provided with a circular groove (22), spool cooperates clamping by this circular groove with the valve core case (5) of a ring-type, distribution a plurality of claws of holding up (51) on described valve core case (5) excircle, the front end of pressure spring is stuck in the inboard of claw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101689910A CN102261323A (en) | 2011-06-22 | 2011-06-22 | Check valve of automobile vacuum pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101689910A CN102261323A (en) | 2011-06-22 | 2011-06-22 | Check valve of automobile vacuum pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102261323A true CN102261323A (en) | 2011-11-30 |
Family
ID=45008112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101689910A Pending CN102261323A (en) | 2011-06-22 | 2011-06-22 | Check valve of automobile vacuum pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102261323A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531990A (en) * | 2020-04-17 | 2021-10-22 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2507576A1 (en) * | 1981-06-12 | 1982-12-17 | Cherrier Yves | Distributor for paste - has conical housing screwed on bottle neck and with spring controlled ball valve in delivery tube |
| CN2277471Y (en) * | 1996-10-23 | 1998-04-01 | 陶子奇 | Check valve for vehicle vacuum pump |
| JP2007239863A (en) * | 2006-03-08 | 2007-09-20 | Fuji Seiko Kk | Constant flow rate valve |
| CN201443354U (en) * | 2009-06-01 | 2010-04-28 | 沈阳市新合精密机械一厂 | Easy-to-drill core breaker of float collar float shoes |
| CN202149005U (en) * | 2011-06-22 | 2012-02-22 | 江苏梅花机械有限公司 | Automobile vacuum pump check valve |
-
2011
- 2011-06-22 CN CN2011101689910A patent/CN102261323A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2507576A1 (en) * | 1981-06-12 | 1982-12-17 | Cherrier Yves | Distributor for paste - has conical housing screwed on bottle neck and with spring controlled ball valve in delivery tube |
| CN2277471Y (en) * | 1996-10-23 | 1998-04-01 | 陶子奇 | Check valve for vehicle vacuum pump |
| JP2007239863A (en) * | 2006-03-08 | 2007-09-20 | Fuji Seiko Kk | Constant flow rate valve |
| CN201443354U (en) * | 2009-06-01 | 2010-04-28 | 沈阳市新合精密机械一厂 | Easy-to-drill core breaker of float collar float shoes |
| CN202149005U (en) * | 2011-06-22 | 2012-02-22 | 江苏梅花机械有限公司 | Automobile vacuum pump check valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531990A (en) * | 2020-04-17 | 2021-10-22 | 海信（山东）冰箱有限公司 | Refrigerator with a door |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2777716A (en) | Socket type hose coupler with reciprocating detent | |
| CN102900907B (en) | Rapid pipe joint | |
| CN100443337C (en) | Plunger type master cylinder | |
| CN204731108U (en) | A kind of steel pipe hydraulic pressure testing device | |
| CN105545858B (en) | A kind of special Pneumatic valve of pneumohydraulic pressure-cylinder and pneumohydraulic pressure-cylinder | |
| CN202149005U (en) | Automobile vacuum pump check valve | |
| CN102261323A (en) | Check valve of automobile vacuum pump | |
| CN201626392U (en) | Brake master pump structure capable of preventing backflow | |
| CN105240587A (en) | Vacuumized connecting valve | |
| CN102849052B (en) | A kind of transporting tractor has air-cut-off break air braking system | |
| CN205781529U (en) | A kind of conduit coupling | |
| US20190111903A1 (en) | Hydraulic block and manufacturing method for a hydraulic block including at least one check valve | |
| CN104002781B (en) | Brake master cylinder | |
| CN207455005U (en) | The pumping Automatic Link Establishment of mobile negative-pressure platform | |
| CN210770485U (en) | Dragging-preventing device for gas-adding pipeline | |
| CN208311004U (en) | A kind of automobile vacuum pump check valve | |
| CN201964053U (en) | Pipeline connecting device | |
| CN104930224A (en) | Through-type check valve of fire resistant oil vacuum filter | |
| CN212532290U (en) | Oil gun and oiling machine | |
| CN210463686U (en) | Filling head for air conditioner refrigerant | |
| CN210600192U (en) | Limiting air valve with good sealing performance | |
| CN208579005U (en) | A kind of device for injecting liquid | |
| CN102923114A (en) | Vacuum booster | |
| CN104669058A (en) | Vacuum detector with on-off function | |
| CN105364588A (en) | Rotating vacuum airtight clamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111130 |