CN208665160U - A kind of bias-tee integrated check valve - Google Patents

Abstract

The utility model discloses a kind of bias-tee integrated check valves, belong to Vehicle brake assist system field, a kind of bias-tee integrated check valve, including plastics upper housing and plastics lower case, plastics upper housing and plastics lower case pass through ultrasonic bonding, plastics upper housing upper end is provided with olive wrap type structure, plastics lower case includes ending tendon transfer structure and two barb-type rings, ending tendon transfer structure is located on the outside of barb-type ring, and ending tendon transfer structure is fixedly connected with barb-type ring, two barb-type rings are mutually communicated, plastics lower case inner end is equipped with circular film, circular film inner end, which is dug, mounting hole, it can be by the way that check valve and threeway be integrated, realize the complexity for simplifying vacuum line, optimize the effect of the arrangement of pipeline, so that reducing the assembly time of vacuum tube, save cost, and it can be with It is realized by circular film to fluid traffic organising effect in vacuum braking auxiliary system.

Description

A kind of bias-tee integrated check valve

Technical field

The utility model relates to Vehicle brake assist system fields, integrated single more specifically to a kind of bias-tee To valve.

Background technique

Vacuum braking auxiliary brake system is equipped on automobile at present, at present it is relatively common by engine, vacuum pump, The original parts such as booster composition.Vacuum degree in booster can auxiliary brake so that people's foot easily will can just be made very much Dynamic pedal steps down.Vacuum degree in booster is provided by engine and vacuum pump, and the holding of vacuum degree passes through check valve It realizes, as vacuum degree deficiency will cause, brake pedal is really up to the mark, and brake steps on to go down to cause the accident.

But the vacuum line of existing vacuum braking auxiliary brake system is complex, so that the set-up time of vacuum tube It is elongated, increase cost.

Summary of the invention

1. technical problems to be solved

Aiming at the problems existing in the prior art, it is integrated unidirectional that the purpose of this utility model is to provide a kind of bias-tees Valve, it can realize the complexity for simplifying vacuum line, optimize pipeline by integrating check valve and threeway The effect of arrangement saves cost, and it can also be realized by circular film so that reducing the assembly time of vacuum tube To fluid traffic organising effect in vacuum braking auxiliary system.

2. technical solution

To solve the above problems, the utility model adopts the following technical scheme.

A kind of bias-tee integrated check valve, including plastics upper housing and plastics lower case, the plastics upper housing and modeling Lower case is expected by ultrasonic bonding, and plastics upper housing upper end is provided with olive wrap type structure, the plastics lower case packet Include ending tendon transfer structure and two barb-type rings, the ending tendon transfer structure is located on the outside of barb-type ring, and ending tendon transfer structure and Barb-type ring is fixedly connected, and two barb-type rings are mutually communicated, and plastics lower case inner end is equipped with circular film, The circular film inner end, which is dug, mounting hole, and plastics lower case inner end is equipped with positioning column, and the positioning column outer end is opened Multiple ventholes, the positioning column and circular film is carved with to be socketed by mounting hole, the circular film is located above venthole, Plastics upper housing lower end is equipped with positioning bar, and the positioning bar is in contact with circular film, plastics lower case inner end It is fixedly connected with positioning protrusion, the positioning protrusion is located on the outside of positioning column, and positioning protrusion is located at below circular film, described Circular film lower end, which is dug, seal groove, and the seal groove matches with positioning protrusion top, and the inner wall of the seal groove is viscous to be set There is rubber pad, the seal groove is located at right above positioning protrusion, can realize letter by integrating check valve and threeway The complexity for changing vacuum line, optimizes the effect of the arrangement of pipeline, so that reducing the assembly time of vacuum tube, saves Cost, and it can also be realized by circular film to fluid traffic organising effect in vacuum braking auxiliary system.

Further, the lower end of the plastics upper housing, which is dug, triangle+semi-circular recesses, the triangle+semicircle Connected in star is located at the top of plastics upper housing and plastics lower case contact point, and welding process intermediate cam shape+semi-circular recesses can be with Certain space is formed with the plane of plastics lower case to store the melting material generated in welding process.

Further, the circular film inner end, which is dug, cavity, and the cavity inner end is filled with polyurethane fiber, poly- ammonia Ester fiber has good resilience, and when check valve top vacuum degree is less than internal vacuum, polyurethane fiber can make to justify Shape diaphragm is sprung back in time, and gas is made to be not easy to flow back, and increases the using effect of check valve.

Further, top cutting has spherical annular groove in the seal groove, and the spherical shape annular groove inner end is equipped with double-layer seal Ring, double-layer seal ring inner end are placed with vesica piscis, and the vesica piscis inner end is filled with high recovery sponge, works as check valve When top vacuum degree is less than internal vacuum, circular film is closed under differential pressure action, prevents passing through for air-flow, at this moment convex It rises and just sticks into seal groove, increase airtightness, the top of positioning protrusion can stick into spherical annular groove, double-layer seal ring is squeezed, So that double-layer seal ring extends around along the direction of its internal vesica piscis, so that increase air-tightness again, height rebound Sponge has elasticity well, increases buffering, and double-layer seal ring and vesica piscis is protected to be not easy to be extruded rupture.

Further, the inner wall of the hole installing is arranged with rubber neck, and the rubber neck matches with positioning column, and rubber Rubber lantern ring is in contact with positioning column, and rubber neck can protect at mounting hole, keeps the edge of mounting hole not easy to crack, extends unidirectional The service life of valve.

3. beneficial effect

Compared with the prior art, utility model has the advantages that

(1) this programme can be by integrating check valve and threeway, and realization simplifies the complexity of vacuum line, The effect of the arrangement of pipeline is optimized, so that reducing the assembly time of vacuum tube, saves cost, and it can also pass through Circular film is realized to fluid traffic organising effect in vacuum braking auxiliary system.

(2) lower end of plastics upper housing, which is dug, triangle+semi-circular recesses, and triangle+semi-circular recesses are located at plastics The top of upper housing and plastics lower case contact point, welding process intermediate cam shape+semi-circular recesses can be with plastics lower cases Plane forms certain space to store the melting material generated in welding process.

(3) circular film inner end, which is dug, cavity, and cavity inner end is filled with polyurethane fiber, and polyurethane fiber has fine Resilience, when check valve top vacuum degree be less than internal vacuum when, polyurethane fiber can be such that circular film springs back in time, Make gas be not easy to flow back, increases the using effect of check valve.

(4) top is dug and has a spherical annular groove in seal groove, and spherical annular groove inner end is equipped with double-layer seal ring, in double-layer seal ring End is placed with vesica piscis, and vesica piscis inner end is filled with high recovery sponge, when check valve top vacuum degree is less than inner vacuum When spending, circular film is closed under differential pressure action, prevents passing through for air-flow, and at this moment positioning protrusion just sticks into seal groove, is increased Add airtightness, the top of positioning protrusion can stick into spherical annular groove, double-layer seal ring be squeezed, so that double-layer seal ring is along in it The direction of the vesica piscis in portion is extended around, so that increasing air-tightness again, enhancing prevents the effect of airflow reflux, height rebound Sponge has elasticity well, increases buffering, and double-layer seal ring and vesica piscis is protected to be not easy to be extruded rupture.

(5) inner wall of the hole installing is arranged with rubber neck, and rubber neck matches with positioning column, and rubber neck and positioning column It is in contact, rubber neck can protect at mounting hole, keep the edge of mounting hole not easy to crack, extend the service life of check valve.

Detailed description of the invention

Fig. 1 is the positive structural schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram in Fig. 1 at A；

Fig. 3 is the structural schematic diagram in Fig. 1 at B；

Fig. 4 is the structural schematic diagram of the circular film part of the utility model；

Fig. 5 is the structural schematic diagram in Fig. 4 at C；

Fig. 6 is the structural schematic diagram of the double-layer seal ring portion partial cross-section of the utility model；

Fig. 7 is the principles of the present invention figure.

Figure label explanation:

1 plastics upper housing, 2 plastics lower cases, 3 ending tendon transfer structures, 4 positioning columns, 5 high recovery sponges, 6 barb-type rings, 7 Olive wrap type structure, 8 triangles+semi-circular recesses, 9 circular films, 10 ventholes, 11 positioning protrusion, 12 mounting holes, 13 positioning Muscle, 14 rubber necks, 15 polyurethane fibers, 16 seal grooves, 17 spherical annular grooves, 18 double-layer seal rings, 19 vesica piscises.

Specific embodiment

The following is a combination of the drawings in the embodiments of the present utility model；The technical scheme in the embodiment of the utility model is carried out Clearly and completely describe；Obviously；The described embodiments are only a part of the embodiments of the utility model；Rather than whole Embodiment, based on the embodiments of the present invention；Those of ordinary skill in the art are without making creative work Every other embodiment obtained；It fall within the protection scope of the utility model.

In the description of the present invention, it should be noted that term " on ", "lower", "inner", "outside" " top/bottom end " etc. The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure It makes and operates, therefore should not be understood as limiting the present invention.In addition, term " first ", " second " are only used for description mesh , it is not understood to indicate or imply relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " being provided with ", " be arranged/connect ", " connection " etc., shall be understood in a broad sense, such as " connection ", may be a fixed connection, can also be with It is to be detachably connected, or be integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be with Indirectly connected through an intermediary, it can be the connection inside two elements.For the ordinary skill in the art, may be used The concrete meaning of above-mentioned term in the present invention is understood with concrete condition.

Embodiment 1:

Please refer to Fig. 1-7, a kind of bias-tee integrated check valve, including plastics upper housing 1 and plastics lower case 2, plastics Using high-quality imported material is used, flame resistance and mechanicalness are all very good for upper housing 1 and the material of plastics lower case 2, can be with Guarantee that check valve normal use between -40 DEG C to 120 DEG C, plastics upper housing 1 and plastics lower case 2 pass through ultrasonic bonding, 1 lower end of plastics upper housing is cylindrical surface, and 2 upper end of plastics lower case is circular conical surface, the lower end of plastics upper housing 1 and plastics lower case Contact is assembled mutually in 2 upper end, crosses the high-frequency vibration of ultrasonic wave, plastics upper housing 1 and plastics lower case 2 can be at contact surfaces Thermal energy melts are generated, to weld together, the lower end of plastics upper housing 1, which is dug, triangle+semi-circular recesses 8, triangle+ Semi-circular recesses 8 are located at the top of 2 contact point of plastics upper housing 1 and plastics lower case, and welding process intermediate cam shape+semicircle is recessed Slot 8 can form certain space with the plane of plastics lower case 2 to store the melting material generated in welding process, plastics upper housing 1 upper end is provided with olive wrap type structure 7, and olive wrap type structure 7 can be connected directly with sebific duct, be connected to the engine, plastics Lower case 2 includes ending tendon transfer structure 3 and two barb-type rings 6, and the angle between two barb-type rings 6 is 90 degree, and two A barb-type ring 6 is connected on vacuum booster and vacuum pump by nylon tube, and ending tendon transfer structure 3 is located at barb-type bamboo 6 outside of section, and ending tendon transfer structure 3 is fixedly connected with barb-type ring 6, two barb-type rings 6 are mutually communicated, plastics lower case 2 inner ends are equipped with circular film 9, and 9 inner end of circular film, which is dug, mounting hole 12, and 12 inner wall sleeve of mounting hole is equipped with rubber neck 14, Rubber neck 14 matches with positioning column 4, and rubber neck 14 is in contact with positioning column 4, and rubber neck 14 can protect installation At hole 12, keep the edge of mounting hole 12 not easy to crack, extend the service life of check valve, 2 inner end of plastics lower case is equipped with fixed Position column 4,4 outer end of positioning column, which is dug, multiple ventholes 10, and positioning column 4 is socketed with circular film 9 by mounting hole 12, circular membrane Piece 9 is located at 10 top of venthole, and 1 lower end of plastics upper housing is equipped with positioning bar 13, and positioning bar 13 is in contact with circular film 9, 2 inner end of plastics lower case is fixedly connected with positioning protrusion 11, and positioning protrusion 11 is located at 4 outside of positioning column, and positioning protrusion 11 In 9 lower section of circular film, 9 lower end of circular film, which is dug, seal groove 16, and seal groove 16 matches with 11 top of positioning protrusion, close The inner wall of sealing groove 16 is viscous to be equipped with rubber pad, and seal groove 16 is located at 11 surface of positioning protrusion, can be by by check valve and threeway It integrates, realizes the complexity for simplifying vacuum line, the effect of the arrangement of pipeline is optimized, so that reducing vacuum tube Assembly time, save cost, and it can also be realized by circular film 9 to fluid stream in vacuum braking auxiliary system To control effect.

4-6 is please referred to, 9 inner end of circular film, which is dug, cavity, and cavity inner end is filled with polyurethane fiber 15, and polyurethane is fine Dimension 15 has good resilience, and when check valve top vacuum degree is less than internal vacuum, polyurethane fiber 15 can make to justify Shape diaphragm 9 is sprung back in time, is made gas be not easy to flow back, is increased the using effect of check valve, and top, which is dug, in seal groove 16 spherical shape Annular groove 17, spherical 17 inner end of annular groove are equipped with double-layer seal ring 18, and the material of double-layer seal ring 18 is silicon rubber, silicon rubber it is resistance to low Mild high temperature resistance is good, can be used normally between -55 DEG C to 180 DEG C, and the diameter of double-layer seal ring 18 is greater than ball collar Distance at 17 notch of slot, so that double-layer seal ring 18 will not be dropped out out of spherical annular groove 17,18 inner end of double-layer seal ring is placed There is vesica piscis 19,19 inner end of vesica piscis is filled with high recovery sponge 5, when check valve top vacuum degree is less than internal vacuum When, circular film 9 is closed under differential pressure action, prevents passing through for air-flow, and at this moment positioning protrusion 11 just sticks into seal groove 16, Increase airtightness, the top of positioning protrusion 11 can stick into spherical annular groove 17, double-layer seal ring 18 be squeezed, so that double-layer seal ring 18 extend around along the direction of its internal vesica piscis 19, so that increasing air-tightness again, enhancing prevents airflow reflux Effect, high recovery sponge 5 has elasticity well, increases buffering, protect double-layer seal ring 18 and vesica piscis 19 be not easy by Rupture is squeezed, may be implemented to increase the effect of air-tightness, so that air-flow when check valve top vacuum degree is less than internal vacuum It is not easy to flow back, enhance to fluid traffic organising effect in vacuum braking auxiliary system.

In use, olive wrap type structure 7 can be connected directly with sebific duct, it is connected to the engine, by two barb-types Ring 6 is connected on vacuum booster and vacuum pump by nylon tube, in the feelings for guaranteeing part and piping connection leakproofness Under condition, the ending tendon transfer structure 3 on barb-type ring 6 and barb-type ring 6 also can guarantee that pull-out force, torsional moment comply with standard, It can realize the complexity for simplifying vacuum line by integrating check valve and threeway, optimize the arrangement of pipeline Effect save cost so that reducing the assembly time of vacuum tube, when check valve top vacuum degree be greater than internal vacuum When, under differential pressure action, circular film 9 is opened, so that check valve is opened, air-flow can pass through, when check valve top vacuum degree When less than internal vacuum, circular film 9 is closed under differential pressure action, prevents passing through for air-flow, and polyurethane fiber 15 has very Good resilience, can promote circular film 9 to spring back much sooner, in springback process, positioning protrusion 11 just sticks into sealing In slot 16, increase airtightness, the top of positioning protrusion 11 can stick into spherical annular groove 17, double-layer seal ring 18 be squeezed, so that double Layer sealing ring 18 extends around along the direction of its internal vesica piscis 19, so that increasing air-tightness again, enhancing is prevented The effect of airflow reflux, high recovery sponge 5 have elasticity well, increase buffering, protect double-layer seal ring 18 and vesica piscis 19 are not easy to be extruded rupture, may be implemented to increase the effect of air-tightness when check valve top vacuum degree is less than internal vacuum, So that air-flow is not easy to flow back, enhance to fluid traffic organising effect in vacuum braking auxiliary system.

It is described above；The only preferable specific embodiment of the utility model；But the protection scope of the utility model is not It is confined to this；Anyone skilled in the art is within the technical scope disclosed by the utility model；It is practical according to this Novel technical solution and its improvement design is subject to equivalent substitution or change；It should all cover in the protection scope of the utility model It is interior.

Claims (5)

1. a kind of bias-tee integrated check valve, including plastics upper housing (1) and plastics lower case (2), it is characterised in that: described By ultrasonic bonding, plastics upper housing (1) upper end is provided with olive packet for plastics upper housing (1) and plastics lower case (2) Formula structure (7), the plastics lower case (2) include ending tendon transfer structure (3) and two barb-type rings (6), the ending tendon transfer knot Structure (3) is located on the outside of barb-type ring (6), and ending tendon transfer structure (3) is fixedly connected with barb-type ring (6), falls described in two Thorn formula ring (6) is mutually communicated, and plastics lower case (2) inner end is equipped with circular film (9), circular film (9) inner end Cutting has mounting hole (12), and plastics lower case (2) inner end is equipped with positioning column (4), and positioning column (4) outer end, which is dug, to be had Multiple ventholes (10), the positioning column (4) and circular film (9) are socketed by mounting hole (12), circular film (9) position Above venthole (10), plastics upper housing (1) lower end is equipped with positioning bar (13), the positioning bar (13) and circular membrane Piece (9) is in contact, and plastics lower case (2) inner end is fixedly connected with positioning protrusion (11), and the positioning protrusion (11) is located at On the outside of positioning column (4), and positioning protrusion (11) is located at below circular film (9), and circular film (9) lower end, which is dug, sealing Slot (16), the seal groove (16) match with positioning protrusion (11) top, and the inner wall of the seal groove (16) is viscous to be equipped with rubber Pad, the seal groove (16) are located at right above positioning protrusion (11).

2. a kind of bias-tee integrated check valve according to claim 1, it is characterised in that: the plastics upper housing (1) Lower end dig have triangle+semi-circular recesses (8), the triangle+semi-circular recesses (8) be located at plastics upper housing (1) and The top of plastics lower case (2) contact point.

3. a kind of bias-tee integrated check valve according to claim 1, it is characterised in that: in the circular film (9) End, which is dug, cavity, and the cavity inner end is filled with polyurethane fiber (15).

4. a kind of bias-tee integrated check valve according to claim 1, it is characterised in that: top in the seal groove (16) End, which is dug, to be had spherical annular groove (17), and spherical shape annular groove (17) inner end is equipped with double-layer seal ring (18), the double-layer seal ring (18) inner end is placed with vesica piscis (19), and vesica piscis (19) inner end is filled with high recovery sponge (5).

5. a kind of bias-tee integrated check valve according to claim 1, it is characterised in that: mounting hole (12) inner wall It is arranged with rubber neck (14), the rubber neck (14) matches with positioning column (4), and rubber neck (14) and positioning column (4) it is in contact.