CN211370586U

CN211370586U - Resonant cavity assembly and automobile fuel evaporation system

Info

Publication number: CN211370586U
Application number: CN201922350019.XU
Authority: CN
Inventors: 李宁; 郑亮; 谭发长; 吴仕超; 李峰
Original assignee: Shanghai Yibo Material Application Technology Co ltd
Current assignee: Shanghai Yibo Material Application Technology Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-08-28
Anticipated expiration: 2029-12-24

Abstract

The utility model relates to an automobile manufacturing technical field specifically discloses a resonant cavity assembly and car fuel vaporization system. The resonant cavity assembly includes: the upper cover comprises a connector with a hollow structure, a clamping ring is arranged at the upper end of the connector, an air inlet pipe of the electromagnetic valve is connected into the connector through the clamping ring, a first sealing ring is arranged on the inner wall of the connector, and the outer wall of the air inlet pipe is abutted to the first sealing ring; the lower cover, the one end of lower cover is located to the upper cover lid and encloses to close and form the cavity, and the other end of lower cover is provided with the connecting pipe, is provided with a plurality of cyclic annular archs along its axial interval on the outer wall of connecting pipe, and outside the connecting pipe was located to pipeline assembly cover to with cyclic annular protruding joint, be provided with the second sealing washer on the outer wall of connecting pipe, the inner wall and the second sealing washer butt of pipeline assembly. The utility model provides a resonant cavity assembly improves its joint strength with the solenoid valve to and the leakproofness with the junction of pipeline assembly and solenoid valve.

Description

Resonant cavity assembly and automobile fuel evaporation system

Technical Field

The utility model relates to an automobile manufacturing technical field especially relates to a resonant cavity assembly and car fuel vaporization system.

Background

With the official implementation of national VI policy, in order to meet the latest automobile emission requirements, automobile factories redesign automobile fuel evaporation control systems, such as increasing the volume of an activated carbon tank, increasing the diameter of a pipeline, increasing the ventilation volume of a carbon tank control solenoid valve, and the like, and the adjustment increases the noise generated by the whole fuel evaporation control system, and the noise can be transmitted to a cockpit, thereby seriously damaging the driving feeling of customers.

In the prior art, in order to reduce noise generated by a fuel evaporation control system, a resonant cavity assembly is arranged between an electromagnetic valve for controlling the opening and closing of a carbon tank and a pipeline assembly, but the connection strength of the resonant cavity assembly and the electromagnetic valve in the prior art is low, and the sealing property of the connection part of the resonant cavity assembly, the pipeline assembly and the electromagnetic valve is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a resonant cavity assembly to improve the joint strength of resonant cavity assembly and solenoid valve, and the leakproofness of the junction of resonant cavity assembly and pipeline assembly and solenoid valve.

To achieve the purpose, the utility model adopts the following technical proposal:

a resonant cavity assembly, comprising:

the upper cover comprises a connector with a hollow structure, a clamping ring is arranged at the upper end of the connector, the electromagnetic valve is connected into the connector through the clamping ring, a first sealing ring is arranged on the inner wall of the connector, and the outer wall of the air inlet pipe is abutted to the first sealing ring;

the lower cover, the upper cover lid is located the one end of lower cover closes and forms the cavity, the other end of lower cover is provided with the connecting pipe, be provided with a plurality of cyclic annular archs along its axial interval on the outer wall of connecting pipe, pipeline assembly cover is located outside the connecting pipe, and with cyclic annular protruding joint, be provided with the second sealing washer on the outer wall of connecting pipe, the inner wall of pipeline assembly with the second sealing washer butt.

Preferably, two opposite accommodating ports are formed in the connecting head, the clamping ring comprises two oppositely-arranged connecting portions and two oppositely-arranged clamping portions, the clamping portions are located between the connecting portions respectively, the connecting portions are located in the accommodating ports and can slide along the radial direction of the connecting head in a reciprocating mode, and the clamping portions are abutted to the air inlet pipe.

Preferably, the upper wall and/or the lower wall of the accommodating port are/is provided with guide blocks extending along the radial direction of the connector, the connecting portion is provided with guide grooves, and at least part of the guide blocks are located in the guide grooves.

Preferably, two joint portion all include the spigot surface and with the bottom surface that the spigot surface is connected, two the spigot surface is the arc structure that the slope set up, and two the interval of spigot surface reduces gradually from top to bottom, be provided with the bulge loop on the outer wall of intake pipe, the bulge loop with the bottom surface butt.

Preferably, the axis of the connector coincides with the axis of the lower cover, and the axis of the connecting pipe is perpendicular to the axis of the lower cover.

Preferably, the outer wall of the connecting pipe is provided with two limiting bulges at intervals along the axial direction of the connecting pipe, and the second sealing ring is clamped between the two limiting bulges.

Preferably, the connecting head is provided with two first sealing rings, and a separation retaining ring is arranged between the two first sealing rings.

Preferably, the inner wall of the upper cover and/or the lower cover is provided with a reinforcing rib.

Preferably, the upper cover and the lower cover are connected by laser welding.

Another object of the utility model is to provide an automobile fuel vaporization system to the noise reduction makes driver's ride and drives and experience well.

an automobile fuel evaporation system comprises the resonant cavity assembly.

The utility model has the advantages that: the upper cover includes the connector, and the upper end of connector is provided with the snap ring, and the intake pipe of solenoid valve is worn to locate in the connector to be connected with the connector through the snap ring, the snap ring has improved the joint strength of connector and solenoid valve. Be provided with first sealing washer on the inner wall of connector, the outer wall and the first sealing washer butt of intake pipe to the leakproofness of the junction of resonant cavity assembly and solenoid valve has been improved.

The other end of the lower cover is provided with a connecting pipe, a plurality of annular bulges are arranged on the outer wall of the connecting pipe at intervals along the axial direction of the connecting pipe, and the pipeline assembly is sleeved outside the connecting pipe and is clamped with the annular bulges, so that the connecting strength of the resonant cavity assembly and the pipeline assembly is ensured. The outer wall of the connecting pipe is provided with a second sealing ring, and the inner wall of the pipeline assembly is abutted to the second sealing ring, so that the sealing property of the joint of the resonant cavity assembly and the pipeline assembly is improved.

Solenoid valve among the prior art need link to each other with the pipeline assembly through a quick-operation joint, the utility model discloses a snap ring has realized the high-speed joint of solenoid valve and resonant cavity assembly, promptly the utility model discloses in having integrated the resonant cavity assembly with quick-operation joint, reduced resonant cavity assembly cost.

Drawings

Fig. 1 is a schematic structural diagram of a resonant cavity assembly provided in an embodiment of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

fig. 3 is a cross-sectional view of a resonator assembly provided by an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a snap ring according to an embodiment of the present invention.

In the figure:

1. an upper cover; 11. a connector; 111. a guide block;

2. a first seal ring;

3. a snap ring; 31. a connecting portion; 311. a guide groove; 32. a clamping part; 321. a guide surface;

4. a lower cover; 41. a connecting pipe; 411. an annular projection; 412. a limiting bulge;

5. a second seal ring; 6. a retainer ring; 7. reinforcing ribs; 8. a chamber.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

The present invention is limited to certain orientation words, and the use of orientation words such as "upper", "lower", "left", "right", "inner" and "outer" in the case where no opposite explanation is made is convenient for understanding, and thus does not limit the scope of the present invention.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment provides a resonant cavity assembly, so as to improve the connection strength of the resonant cavity assembly and an electromagnetic valve and the sealing performance of the resonant cavity assembly, a pipeline assembly and the electromagnetic valve.

As shown in fig. 1 to 3, the present embodiment provides a resonator assembly including an upper cover 1 and a lower cover 4. Wherein, upper cover 1 includes hollow structure's connector 11, and the upper end of connector 11 is provided with snap ring 3, and the intake pipe of solenoid valve passes through snap ring 3 to be connected in connector 11, and snap ring 3 has improved the joint strength of connector 11 with the solenoid valve. Be provided with first sealing washer 2 on the inner wall of connector 11, the outer wall and the 2 butt of first sealing washer of intake pipe to the leakproofness of the junction of resonant cavity assembly and solenoid valve has been improved.

The lower cover 4 is of a cylindrical structure, the upper cover 1 covers one end of the lower cover 4 and encloses to form a cavity 8, the other end of the lower cover 4 is provided with a connecting pipe 41, a plurality of annular protrusions 411 are arranged on the outer wall of the connecting pipe 41 at intervals along the axial direction of the connecting pipe, and the pipeline assembly is sleeved outside the connecting pipe 41 and clamped with the annular protrusions 411, so that the connection strength of the resonant cavity assembly and the pipeline assembly is ensured. The outer wall of the connecting pipe 41 is provided with a second sealing ring 5, and the inner wall of the pipeline assembly is abutted to the second sealing ring 5, so that the sealing property of the joint of the resonant cavity assembly and the pipeline assembly is improved.

The upper cover 1 and the lower cover 4 are both hollow structures, so that a cavity 8 is formed by the upper cover and the lower cover, gas enters the cavity 8 through the pipeline assembly, and the internal section of the cavity 8 is far larger than the section of the pipeline assembly, so that the section changes to cause acoustic impedance change, and the sound waves absorb and reflect partial energy after reaching the cavity 8, and the effect of reducing noise of a certain frequency is achieved. By adjusting the sectional area ratio of the pipeline assembly to the chamber 8, the noise frequency band and the noise reduction effect can be adjusted artificially.

Solenoid valve among the prior art need link to each other with the pipeline assembly through a quick-operation joint, the utility model discloses a snap ring 3 has realized the quick-operation joint of solenoid valve and resonant cavity assembly, promptly the utility model discloses in having integrated the resonant cavity assembly with quick-operation joint, reduced resonant cavity assembly cost.

In order to avoid interference with other parts and facilitate installation, the axis of the connector 11 is coincident with the axis of the lower cover 4, and the axis of the connecting pipe 41 is perpendicular to the axis of the lower cover 4.

As shown in fig. 3, the annular protrusion 411 and the connection pipe 41 preferably form a bamboo joint structure. In order to stabilize the position of the second sealing ring 5, two limiting protrusions 412 are axially spaced on the outer wall of the connecting pipe 41, and the second sealing ring 5 is clamped between the two limiting protrusions 412.

Two first sealing rings 2 are arranged on the connector 11, and a separation retainer ring 6 is arranged between the two first sealing rings 2 to stabilize the positions of the first sealing rings 2.

Because the resonant cavity assembly needs to be reliably used in an environment of-40 ℃ to 120 ℃, the upper cover 1 and the lower cover 4 of the resonant cavity assembly are both made of nylon materials with excellent temperature resistance and mechanical properties. The first sealing ring 2 and the second sealing ring 5 are made of fluororubber.

As shown in fig. 2 and 4, two opposite accommodating ports are formed in the connector 11, the snap ring 3 includes two oppositely-arranged connecting portions 31 and two oppositely-arranged clamping portions 32, the two clamping portions 32 are respectively located between the two connecting portions 31, the connecting portions 31 are located in the accommodating ports and can slide along the radial direction of the connector 11 in a reciprocating manner relative to the accommodating ports, and the clamping portions 32 are abutted to the air inlet pipe. In order to make snap ring 3 can the joint intake pipe, the interval of two joint portions 32 is less than the external diameter of intake pipe, install the intake pipe of solenoid valve in the in-process of connector 11, the intake pipe at first passes snap ring 3, make the interval increase of two joint portions 32 simultaneously, two connecting portion 31 are in the holding intraoral radial slip along connector 11, it is little between the interval of two connecting portion 31 promptly, install in connector 11 back when the intake pipe of solenoid valve, the pipe wall butt of intake pipe is in the lower extreme of installation department, realize the joint of intake pipe and connect. Preferably, in order to make the intake pipe abut against the lower end of the clamping portion 32, a protruding ring (not shown in the figure) is arranged on the outer wall of the intake pipe, and after the protruding ring penetrates through the snap ring 3, the two clamping portions 32 can automatically approach each other, so that the protruding ring abuts against the lower end of the clamping portion 32.

Preferably, the clamping portion 32 includes a guide surface 321 and a bottom surface connected to the guide surface 321, the two guide surfaces 321 are arc structures obliquely arranged, and the distance between the two guide surfaces 321 is gradually reduced from top to bottom, and preferably, the two guide surfaces 321 are located on the same conical surface. The provision of the guide surface 321 can improve the mounting efficiency of the solenoid valve.

Preferably, in order to make the connecting portion 31 slide stably, a guide block 111 extending along a radial direction of the connecting head 11 is disposed on an upper wall of the receiving opening, a guide groove 311 is disposed on the connecting portion 31, and the guide block 111 is at least partially located in the guide groove 311. Of course, in other embodiments, the guide block 111 may be disposed on the lower wall of the receiving opening, or both the upper wall and the lower wall of the receiving opening may be provided with the receiving opening.

In order to improve the strength of the upper cover 1 and the lower cover 4, in the present embodiment, reinforcing ribs 7 are provided on the inner walls of the upper cover 1 and the lower cover 4. Of course, in other embodiments, it is also possible to provide only the upper cover 1 or the lower cover 4 with the reinforcing ribs 7 as needed. The upper cover 1, the lower cover 4 and the connecting pipe 41 are processed and produced by adopting an injection molding process.

The upper cap 1 and the lower cap 4 are connected by laser welding. Laser welding has the following advantages: the size of the welding line is precise, the welding is firm, the welding is airtight and watertight, the surface of the weldment is intact, smooth and beautiful; in the welding process, the resin is less degraded, the generated scraps are less, and the product cleanliness is good; the vibration stress and the thermal stress of the resonant cavity assembly can be greatly reduced; the welding on-line monitoring is easy to realize, and the highly automatic welding is easy to realize.

Preferably, in order to facilitate laser welding, the upper cover 1 is made of a light-transmitting material, and the lower cover 4 is made of a light-absorbing material. In the welding process, in order to ensure that the upper cover 1 and the lower cover 4 are reliably fused together, the welding position needs to be continuously pressurized, and for the resonant cavity assembly, an interference fit (the interference is between 0.03 and 0.05 mm) is adopted at the welding position so as to continuously maintain the welding pressure. The sealing requirement after welding can reach that the pressure in the chamber 8 is increased to 1bar, the pressure is kept for 10s, and the leakage rate is less than 2 cc/min.

The embodiment also provides an automobile fuel evaporation system, which comprises the resonant cavity assembly, and the automobile fuel evaporation system has the advantages that the automobile noise is low, and the driving experience of a driver is good.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A resonator chamber assembly, comprising:

the upper cover (1) comprises a connector (11) with a hollow structure, a clamping ring (3) is arranged at the upper end of the connector (11), an air inlet pipe of the electromagnetic valve is connected into the connector (11) through the clamping ring (3), a first sealing ring (2) is arranged on the inner wall of the connector (11), and the outer wall of the air inlet pipe is abutted to the first sealing ring (2);

lower cover (4), upper cover (1) lid is located the one end of lower cover (4) encloses and closes formation cavity (8), the other end of lower cover (4) is provided with connecting pipe (41), be provided with a plurality of annular archs (411) along its axial interval on the outer wall of connecting pipe (41), pipeline assembly cover is located outside connecting pipe (41), and with annular arch (411) joint, be provided with second sealing washer (5) on the outer wall of connecting pipe (41), the inner wall of pipeline assembly with second sealing washer (5) butt.

2. The resonant cavity assembly according to claim 1, wherein two opposite receiving openings are formed in the connector (11), the snap ring (3) includes two opposite connecting portions (31) and two opposite clamping portions (32), the two clamping portions (32) are respectively located between the two connecting portions (31), the connecting portions (31) are located in the receiving openings and can slide back and forth in a radial direction of the connector (11) relative to the receiving openings, and the clamping portions (32) are abutted to the air inlet pipe.

3. The resonator assembly according to claim 2, characterized in that a guide block (111) extending in a radial direction of the connecting head (11) is disposed on an upper wall and/or a lower wall of the receiving opening, a guide groove (311) is disposed on the connecting portion (31), and the guide block (111) is at least partially located in the guide groove (311).

4. The resonator assembly according to claim 2, wherein each of the two locking portions (32) includes a guide surface (321) and a bottom surface connected to the guide surface (321), the two guide surfaces (321) are of an arc-shaped structure that is obliquely arranged, a distance between the two guide surfaces (321) is gradually reduced from top to bottom, and a convex ring is arranged on an outer wall of the air inlet pipe and abuts against the bottom surface.

5. The resonant cavity assembly according to claim 1, characterized in that the axis of the connector (11) coincides with the axis of the lower cover (4), and the axis of the connecting tube (41) is perpendicular to the axis of the lower cover (4).

6. The resonator assembly according to claim 1, wherein two limiting protrusions (412) are axially spaced from each other on an outer wall of the connecting tube (41), and the second sealing ring (5) is clamped between the two limiting protrusions (412).

7. The resonator assembly according to claim 1, characterized in that two first sealing rings (2) are arranged on the connector (11), and a spacer ring (6) is arranged between the two first sealing rings (2).

8. The resonator assembly according to claim 1, characterized in that the inner wall of the upper cover (1) and/or the lower cover (4) is provided with stiffening ribs (7).

9. The resonator assembly according to claim 1, characterized in that the upper cover (1) and the lower cover (4) are joined by laser welding.

10. An automotive fuel vaporization system, comprising a resonator assembly according to any one of claims 1 to 9.