CN214425187U - Commercial car is with detaining pressure formula check valve - Google Patents

Abstract

The utility model discloses a commercial car is with withholding formula check valve, including first casing, second casing, case, spring and sealing washer, first casing and second casing are interior hollow cylinder structure, the relative lock joint of first casing and second casing axial, the opposite tip of axial of first casing and second casing is the pipeline link, case and spring assembly form the check valve major structure in the inner space behind first casing and second casing lock joint, first casing and second casing are fixed through the soft lock joint of step type structure and sealing washer internal seal fixed for the size of check valve is littleer, has reduced the tie point, has saved the manual work and has gone to screw up, connect, process such as rubber coating materials, and spare part still less, and manufacturing is more convenient, is particularly useful for in the commercial braking system.

Description

Commercial car is with detaining pressure formula check valve

Technical Field

The utility model relates to an automobile valve technical field, more specifically relate to a commercial vehicle is with withholding formula check valve.

Background

Compressed air is generally adopted in a commercial vehicle pneumatic braking system as a power source, and braking of a commercial vehicle is completed according to a certain logic control principle through a foot valve, a hand brake valve, a relay valve and the like and related pipeline systems. In order to ensure that the air pressure of a hand brake valve loop cannot be reduced, so that the vehicle cannot be locked due to the reduction of the pressure of the air storage cylinder in the running process, the hand brake valve end is directly connected with the air storage cylinder through a pipeline generally, and in order to ensure that the pressure of the hand brake valve end is not reduced, the middle of the connecting pipeline needs to be disconnected, and an air brake element for controlling the air flowing direction is added, wherein the air brake element is also called a one-way valve. The compressed air of the air brake element can only flow from the end of the air storage cylinder to the hand brake valve, and cannot flow back. The air brake element also exists in the market at present, but the manufacturing process is complex, the number of parts is large, and the connection sealing is complex.

SUMMERY OF THE UTILITY MODEL

In order to solve the prior art not enough, the utility model provides a commercial car is with detaining pressure formula check valve, the mode sealing connection of soft lock joint through first casing and second casing is fixed and the sealing washer inner seal for the size of check valve is littleer, and the structure is simpler compact, and spare part still less, it is more convenient to make, reduces material cost, is particularly useful for among the commercial car braking system.

The utility model discloses the technological effect that will reach is realized through following scheme: the utility model provides a commercial car is with detaining pressure formula check valve, includes first casing, second casing, case, spring and sealing washer, first casing and second casing are interior hollow cylinder structure, the relative lock joint of first casing and second casing axial, the opposite tip of axial of first casing and second casing is the pipeline link, case and spring assembly form the check valve major structure in the inner space behind first casing and the second casing lock joint, first casing and second casing pass through the soft lock joint of step type structure fixed and sealing washer internal seal fixed.

Preferably, the stepped structures of the first shell and the second shell are matched structures of an L-shaped boss and an L-shaped groove.

Preferably, the first shell is provided with an L-shaped groove towards the inner side of the end of the second shell, the second shell is provided with an L-shaped boss at a position corresponding to the L-shaped groove, and when the first shell and the second shell are fastened, the L-shaped groove and the L-shaped boss are matched and abutted to realize soft fastening and fixing.

Preferably, the first shell correspondingly forms a thin edge at the position of the L-shaped groove, and the L-shaped boss is further provided with a guide angle which is beneficial to the insertion of the L-shaped groove.

Preferably, the raw material of the first shell and the second shell is round bar stock.

Preferably, the valve core is in sliding fit in the second shell, one end of the valve core is abutted to the limiting groove of the second shell, the other end of the valve core is sleeved in the spring, and one end of the spring, far away from the valve core, is abutted to the limiting groove of the first shell to form a main structure of the one-way valve.

Preferably, in the mutual lock joint position region of first casing and second casing, the seal groove has been seted up to the surface of second casing, the sealing washer cover is established in the seal groove and is formed internal seal fixedly with the internal surface interference fit butt of first casing.

Preferably, the pipeline connecting end is of a bamboo joint structure.

The utility model has the advantages of it is following:

the size of the check valve is smaller by utilizing the stepped structure soft fastening fixation and the sealing ring inner seal fixation of the first shell and the second shell, connecting points are reduced, materials such as procedures of manual screwing, connection, gluing and the like are saved, parts are fewer, the processing and the manufacturing are more convenient, and the check valve is particularly suitable for a commercial vehicle braking system.

Drawings

Fig. 1 is a schematic plan view of a press-fit type check valve for a commercial vehicle according to the present invention;

FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;

fig. 3 is an exploded schematic view of a buckling type check valve for a commercial vehicle according to the present invention.

Detailed Description

The invention is described in detail below with reference to the drawings, wherein examples of the embodiments are shown in the drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present invention and for simplicity in description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and "disposed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the interconnection of two elements or through the interaction of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to 3, an embodiment of the present invention provides a buckling type check valve for a commercial vehicle, including a first housing 100, a second housing 200, a valve core 300, a spring 400, and a sealing ring 500, the first casing 100 and the second casing 200 are cylindrical structures with hollow interiors, the first casing 100 and the second casing 200 are buckled oppositely in the axial direction, the axially opposite ends of the first and second housings 100 and 200 are pipe connection ends B, the valve core 300 and the spring 400 are assembled in the inner space after the first casing 100 and the second casing 200 are fastened to form a main structure of the check valve, the first casing 100 and the second casing 200 are fixed by soft buckling of a stepped structure 600 and sealed inside a seal ring 500, the structure of the one-way valve is more compact, the size is smaller, the number of parts is less, the processing and the manufacturing are simpler and more convenient, and the one-way valve is particularly suitable for a commercial vehicle braking system.

The raw materials of the first shell 100 and the second shell 200 are commonly used round bar materials, hexagonal materials are not needed, and the round bar materials are more economical and practical. The assembly principle of the valve core 300 and the spring 400 is a conventional technology in the prior art, specifically, the valve core 300 is slidably fitted in the second housing 200, one end of the valve core 300 is abutted to the limiting groove 210 of the second housing 200, the other end of the valve core is sleeved in the spring 400, and one end of the spring 400, which is far away from the valve core 300, is abutted to the limiting groove 210 of the first housing 100 to form a main structure of the check valve. In the fastening position of the first casing 100 and the second casing 200, a sealing groove 220 is formed in the outer surface of the second casing 200, and the sealing ring 500 is sleeved in the sealing groove 220 and is in interference fit with the inner surface of the first casing 100 to form an inner seal and fix.

The stepped structures 600 of the first housing 100 and the second housing 200 may be matching structures of the L-shaped bosses 230 and the L-shaped grooves 110, and may be used for positioning during installation and have a force-bearing function during fastening. Specifically, an L-shaped groove 110 may be formed in the inner side of the end portion of the first casing 100 facing the second casing 200, an L-shaped boss 230 may be disposed at a position of the second casing 200 corresponding to the L-shaped groove 110, and when the first casing 100 and the second casing 200 are fastened, the L-shaped groove 110 and the L-shaped boss 230 are abutted to each other to achieve soft fastening and fixing. The thin edge of the first housing 100 corresponding to the L-shaped groove 110 can deform under the condition of external force, and has certain strength, thereby forming a reliable connection. The second shell 200 is positioned and limited at the position of the L-shaped boss 230, so that the first shell 100 and the second shell 200 are tightly connected in a buckling manner. Further, the L-shaped boss 230 is further provided with a guide angle for facilitating insertion of the L-shaped groove 110, thereby further ensuring the buckling deformation.

The utility model discloses in, pipeline link B is the bamboo joint structure, and it is more convenient to connect the pipeline, and the leakproofness is good.

The utility model provides a pair of formula check valve is withheld to commercial car makes the size of check valve littleer through utilizing first casing 100 and second casing 200 soft lock joint of step type structure 600 fixed and sealing washer 500 internal seal fixed, has reduced the tie point, has saved the manual work and has removed materials such as processes such as screwing up, connection, rubber coating, spare part still less, and manufacturing is more convenient, is particularly useful for in the commercial car braking system. The pipeline connecting end B can be integrally connected with a quick-plug connector or an air brake standard connector together, and can also be integrally connected with a metal or nonmetal connector without being limited by materials.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention and not for limiting the same, and although the embodiments of the present invention are described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the embodiments of the present invention, and these modifications or equivalent substitutions cannot make the modified technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (8)

1. The utility model provides a withhold formula check valve for commercial car which characterized in that, includes first casing, second casing, case, spring and sealing washer, first casing and second casing are interior hollow cylinder structure, first casing and the relative lock joint of second casing axial, the axially opposite tip of first casing and second casing is the pipeline link, case and spring assembly form the check valve major structure in the inner space behind first casing and the lock joint of second casing, first casing and second casing pass through the soft lock joint of step type structure and fix and sealing washer internal seal fixed.

2. The buckle type check valve for commercial vehicle as claimed in claim 1, wherein the step type structure of the first and second housings is a mating structure of L-shaped boss and L-shaped groove type.

3. The buckling type check valve for commercial vehicles as claimed in claim 2, wherein the first housing has an L-shaped groove formed at an inner side of an end portion thereof facing the second housing, the second housing has an L-shaped protrusion corresponding to the L-shaped groove, and when the first housing and the second housing are buckled, the L-shaped groove and the L-shaped protrusion are engaged and abutted to realize soft buckling fixation.

4. The buckling type check valve for commercial vehicles as claimed in claim 3, wherein the first housing is formed with a thin edge at a position corresponding to the L-shaped groove, and the L-shaped projection is further provided with a guide angle for facilitating insertion of the L-shaped groove.

5. The buckle check valve for commercial vehicle as claimed in claim 1, wherein the raw material of the first and second housings is round bar stock.

6. The buckling type one-way valve for commercial vehicles as claimed in claim 1, wherein the valve core is slidably fitted in the second housing, one end of the valve core abuts against the limiting groove of the second housing, the other end of the valve core is sleeved in the spring, and one end of the spring, which is far away from the valve core, abuts against the limiting groove of the first housing to form a main structure of the one-way valve.

7. The buckling type check valve for commercial vehicles as recited in claim 1, wherein in a region where the first casing and the second casing are buckled to each other, a sealing groove is formed in an outer surface of the second casing, and the sealing ring is sleeved in the sealing groove and is in interference fit with an inner surface of the first casing to form an inner seal for fixation.

8. The buckling type check valve for commercial vehicles as claimed in claim 1, wherein the pipeline connecting end is of a bamboo joint structure.

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