CN113958736A - Check valve assembly for automobile air brake system - Google Patents
Check valve assembly for automobile air brake system Download PDFInfo
- Publication number
- CN113958736A CN113958736A CN202111278102.6A CN202111278102A CN113958736A CN 113958736 A CN113958736 A CN 113958736A CN 202111278102 A CN202111278102 A CN 202111278102A CN 113958736 A CN113958736 A CN 113958736A
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- CN
- China
- Prior art keywords
- air
- cup
- central
- rubber cup
- rubber
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- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/14—Check valves with flexible valve members
- F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Check Valves (AREA)
Abstract
The invention provides a one-way valve assembly for an automobile air brake system, which comprises a valve body, a valve seat, a rubber cup and a base, wherein the valve body is provided with a central air passage, the rubber cup is arranged in the central air passage of the valve body through the valve seat and the base, and the small end of the rubber cup faces an air inlet. Furthermore, a separation blade is arranged between the base and the rubber cup, the separation blade is tightly attached to the rubber cup and the base, and the rubber cup is further limited and serves as a supporting framework of a rubber cup body of the rubber cup. The invention creates the idea of opening and closing the valve assembly, the opening and the closing of the check valve are completed only by the lip edge of the rubber cup, other parts are in a non-motion state, the space utilization rate is high, the integral volume of the check valve is further reduced, and the product cost is reduced; the sealing between the cup lip and the inner wall of the air passage is utilized, so that the sealing failure risk is reduced.
Description
Technical Field
The invention belongs to the field of automobile air brake systems, and relates to a one-way valve assembly for an automobile air brake system.
Background
An independent one-way valve used in an automobile air braking system is generally arranged between an air storage cylinder and a hand control valve pipeline, when the pressure of the air storage cylinder is reduced due to air used by a main vehicle or a trailer, reverse sealing can be effectively carried out, compressed air is prevented from flowing reversely, the output pressure of the hand valve is ensured to be stable, and the condition of dragging and braking when the whole vehicle runs is prevented.
At present, a check valve adopted by a finished automobile is usually a spring to push a rubber valve to act on an inner end face of a valve body for sealing, the pre-tightening force of the spring has a large influence on the performance of the check valve, and the performance of the check valve is reduced due to the fact that the pre-tightening force is too small, so that the dragging and braking of the finished automobile are caused; the excessive pretightening force can increase the airflow resistance, the output response of the one-way valve is slow, and the brake release of the whole vehicle is slow; in order to save space, the spring is usually a tower-shaped spring, so that the load precision is poor, and the risk of the problems is further increased; in addition, when air enters, the valve of the one-way valve is pushed open, airflow vortex is formed due to the fact that the sectional area of the end face of the valve port is suddenly expanded, impurities are easy to stay on the end face, and sealing failure is caused when the one-way valve is closed.
Disclosure of Invention
The invention aims to provide a one-way valve assembly for an automobile air brake system.
In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a check valve assembly for car air brake system, has central air flue including valve body, and the one end of central air flue is the air inlet, and the other end of central air flue is gas outlet, its characterized in that: the rubber cup comprises a cup body, a positioning shaft is integrally arranged in the center of the cup body, and a central positioning groove is formed in the end face on one side of the small end of the cup body;
the valve seat is provided with a first axial ventilation cavity and a central limiting column; the base is provided with a central positioning boss and a second axial ventilation cavity, the base, the rubber cup and the valve seat are sequentially arranged in the central air passage, the base is axially positioned and arranged at the step position in the air inlet of the valve body, the small end of the rubber cup faces the air inlet, and the central positioning boss of the valve seat is matched with the central positioning groove on the rubber cup to limit the rubber cup; the valve seat is screwed into the central air passage of the valve body through the external thread, and the central limit column of the valve body is propped against the end face of the positioning shaft of the rubber cup to limit the axial position of the rubber cup.
The technical scheme is further limited as follows: the positioning shaft end face of the rubber packing cup is provided with a central limiting groove, and a central limiting column of the valve seat is inserted into the central limiting groove of the rubber packing cup to limit the rubber packing cup, so that the packing cup is concentric and cannot move axially.
The technical scheme is further limited as follows: a separation blade is arranged between the base and the rubber cup, the separation blade is tightly attached to the rubber cup and the base, the rubber cup is further limited, and the separation blade is used as a supporting framework of a rubber cup body of the rubber cup.
In the technical scheme, the lip of the rubber cup is attached to the inner wall of the central air passage of the valve body, and when air enters, the lip of the rubber cup is pushed away by air flow to start air supply; when the air pressure of the air inlet is reduced, the lip edge of the leather cup is acted by reverse air pressure, and the lip edge is tightly attached to the valve on the inner wall of the central air passage of the valve body to form sealing.
The technical scheme is further limited as follows: the outer ring of the valve body is arranged in a step shape, an external thread is arranged on the outer ring corresponding to one end of the air inlet, a groove is arranged at the step, an O-shaped sealing ring is matched in the groove and used for being connected with an air path pipeline at one end, and an internal thread in the central air path is used for installing a valve seat and connecting the air path pipeline at the other end; the structure is easy to implement, convenient to connect and capable of further reducing cost.
The invention has the beneficial effects that: the invention creates the thinking of opening and closing the valve assembly, the opening of the valve of the one-way valve only needs to overcome the lip edge tension of the rubber cup, the opening pressure is small, and the output response is quick; the lip sealing structure of the rubber cup has obvious advantages in low-pressure sealing capability and sealing stability, and the sealing ring is arranged on the main air channel, so that impurities are not easy to retain, and the pollution resistance is strong; the opening and closing of the check valve are completed only by the lip edge of the rubber cup, other parts are in a non-moving state, the space utilization rate is high, the integral volume of the check valve is further reduced, and the product cost is reduced; the air inlet end of the one-way valve is of an external thread structure and can be directly connected with the air cylinder, a transition joint is saved, and the cost is further reduced.
Drawings
FIG. 1 is a front view (cross-sectional view) of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a schematic structural view of the rubber cup of the present invention.
Shown in the figure: 1. a valve body; 2. a valve seat; 3. a rubber cup; an O-shaped sealing ring; 5. a baffle plate; 6. a base; 7. an air inlet; 8. and an air outlet.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, a check valve assembly for an automobile air brake system comprises a valve body 1, a valve seat 2, a rubber cup 3 and a base 6, wherein the valve body 1 is provided with a central air passage, one end of the central air passage is an air inlet 7, the other end of the central air passage is an air outlet 8, the rubber cup comprises a cup body 3-1, a positioning shaft 3-2 is integrally arranged in the center of the cup body, and a central positioning groove 3-3 is arranged on the end surface of one side of the small end of the cup body; the valve seat 2 is provided with a first axial ventilation cavity and a central limiting column; a central positioning boss and a second axial ventilation cavity are arranged on the base 6, the rubber cup 3 and the valve seat 2 are sequentially arranged in the central air passage, the base is axially positioned and arranged at the step position in the air inlet of the valve body 1, the small end of the rubber cup 3 faces the air inlet, and the central positioning boss of the valve seat is matched with the central positioning groove 3-3 on the rubber cup to limit the rubber cup (concentrically); the valve seat is screwed into the central air passage of the valve body through the external thread, and the central limit column of the valve body is propped against the end face of the positioning shaft of the rubber cup to limit the axial position of the rubber cup.
The first axial ventilation lumen and the second axial ventilation lumen are used to express axial ventilation lumens, and the terms "first" and "second" are not intended to limit the present invention, but are merely used to describe the present invention more clearly.
Further, as shown in fig. 1 and 3, a central limiting groove 3-4 is arranged on the end face of the positioning shaft of the rubber cup, and a central limiting column of the valve seat is inserted into the central limiting groove 3-4 of the rubber cup to limit the rubber cup, so that the rubber cup is concentric and cannot move axially; the structure is more reliable in limiting.
Further, as shown in fig. 1, a separation blade 5 is arranged between the base 6 and the rubber cup 3, and the separation blade 5 is tightly attached to the rubber cup and the base to further limit the rubber cup and serve as a supporting framework of the rubber cup body of the rubber cup.
In the invention, as shown in a combined figure 1, a lip of a rubber cup 3 is attached to the inner wall of a central air passage of a valve body 1, and when air enters, the lip of the rubber cup is pushed away by air flow to start air supply; when the air pressure of the air inlet is reduced, the lip edge of the leather cup is acted by reverse air pressure, and the lip edge is tightly attached to the valve on the inner wall of the central air passage of the valve body to form sealing.
Further, as shown in fig. 1, the outer ring of the valve body 1 is stepped, an external thread is arranged on the outer ring 1-1 corresponding to one end of the air inlet, a groove is arranged at the step, an O-shaped sealing ring 4 is arranged in the groove and used for connecting with an air path pipeline at one end, and an internal thread in the central air path is used for installing a valve seat and connecting with an air path pipeline at the other end; the structure is easy to implement, convenient to connect and capable of further reducing cost.
As shown in figure 2, an inner hexagonal cavity is arranged on the valve seat 2, so that the valve seat can be conveniently installed by a hexagonal wrench.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto; equivalents and modifications made according to the technical idea of the present invention should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides a check valve assembly for car air brake system, has central air flue including valve body, and the one end of central air flue is the air inlet, and the other end of central air flue is gas outlet, its characterized in that: the rubber cup comprises a cup body, a positioning shaft is integrally arranged in the center of the cup body, and a central positioning groove is formed in the end face on one side of the small end of the cup body;
the valve seat is provided with a first axial ventilation cavity and a central limiting column; the base is provided with a central positioning boss and a second axial ventilation cavity, the base, the rubber cup and the valve seat are sequentially arranged in the central air passage, the base is axially positioned and arranged at the step position in the air inlet of the valve body, the small end of the rubber cup faces the air inlet, and the central positioning boss of the valve seat is matched with the central positioning groove on the rubber cup to limit the rubber cup; the valve seat is screwed into the central air passage of the valve body through the external thread, and the central limit column of the valve body is propped against the end face of the positioning shaft of the rubber cup to limit the axial position of the rubber cup.
2. The check valve assembly for an automobile air brake system according to claim 1, wherein: the positioning shaft end face of the rubber packing cup is provided with a central limiting groove, and the central limiting column of the valve seat is inserted into the central limiting groove of the rubber packing cup to limit the rubber packing cup.
3. The check valve assembly for an automobile air brake system according to claim 1 or 2, wherein: a separation blade is arranged between the base and the rubber cup, and the separation blade is tightly attached to the rubber cup and the base.
4. The check valve assembly for an automobile air brake system according to claim 1 or 2, wherein: the lip of the rubber cup is attached to the inner wall of the central air passage of the valve body, and when air enters, the lip of the rubber cup is pushed away by air flow to start air supply; when the air pressure of the air inlet is reduced, the lip edge of the leather cup is acted by reverse air pressure, and the lip edge is tightly attached to the valve on the inner wall of the central air passage of the valve body to form sealing.
5. The check valve assembly for an automobile air brake system according to claim 3, wherein: the lip of the rubber cup is attached to the inner wall of the central air passage of the valve body, and when air enters, the lip of the rubber cup is pushed away by air flow to start air supply; when the air pressure of the air inlet is reduced, the lip edge of the leather cup is acted by reverse air pressure, and the lip edge is tightly attached to the valve on the inner wall of the central air passage of the valve body to form sealing.
6. The check valve assembly for an automobile air brake system according to claim 1 or 2, wherein: the outer ring of the valve body is arranged in a step shape, an external thread is arranged on the outer ring corresponding to one end of the air inlet, a groove is arranged at the step, and an O-shaped sealing ring is matched in the groove.
7. The check valve assembly for an automobile air brake system according to claim 3, wherein: the outer ring of the valve body is arranged in a step shape, an external thread is arranged on the outer ring corresponding to one end of the air inlet, a groove is arranged at the step, and an O-shaped sealing ring is matched in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111278102.6A CN113958736A (en) | 2021-10-30 | 2021-10-30 | Check valve assembly for automobile air brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111278102.6A CN113958736A (en) | 2021-10-30 | 2021-10-30 | Check valve assembly for automobile air brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113958736A true CN113958736A (en) | 2022-01-21 |
Family
ID=79468500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111278102.6A Pending CN113958736A (en) | 2021-10-30 | 2021-10-30 | Check valve assembly for automobile air brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113958736A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6237621B1 (en) * | 1996-07-19 | 2001-05-29 | Robert B. Chaffee | Valve for inflatable objects |
| CN2579978Y (en) * | 2002-11-08 | 2003-10-15 | 刘星良 | Strain packing cup delay flushing valve |
| CN103968075A (en) * | 2014-05-22 | 2014-08-06 | 湖州市千金宝云机械铸件有限公司 | Rubber cup of automobile brake |
| CN210770462U (en) * | 2019-07-11 | 2020-06-16 | 宁波江北新鑫石化机械设备有限责任公司 | Silencing one-way exhaust valve |
| CN213064770U (en) * | 2020-08-20 | 2021-04-27 | 未来我来卫浴科技(广东)有限公司 | Constant-flow one-way valve |
-
2021
- 2021-10-30 CN CN202111278102.6A patent/CN113958736A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6237621B1 (en) * | 1996-07-19 | 2001-05-29 | Robert B. Chaffee | Valve for inflatable objects |
| CN2579978Y (en) * | 2002-11-08 | 2003-10-15 | 刘星良 | Strain packing cup delay flushing valve |
| CN103968075A (en) * | 2014-05-22 | 2014-08-06 | 湖州市千金宝云机械铸件有限公司 | Rubber cup of automobile brake |
| CN210770462U (en) * | 2019-07-11 | 2020-06-16 | 宁波江北新鑫石化机械设备有限责任公司 | Silencing one-way exhaust valve |
| CN213064770U (en) * | 2020-08-20 | 2021-04-27 | 未来我来卫浴科技(广东)有限公司 | Constant-flow one-way valve |
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