CN220748421U - Air filter waterproof construction and engine - Google Patents

Abstract

The utility model provides a waterproof structure of an air filter, which comprises a base, a filter element body, a first shell, a second shell and a baffle plate, wherein the first shell is covered on the base and covers the filter element body and the first exhaust hole, the second shell is arranged below the base, an air inlet cavity is formed in the second shell, a second air inlet hole communicated with the first exhaust hole is formed at the top of the air inlet cavity, and a second exhaust hole is formed at the bottom of the air inlet cavity. The baffle is arranged on the second shell and forms an installation position with the second shell. This empty filter waterproof construction has prevented effectively that the rainwater from entering into the installation intracavity to improved this empty filter waterproof construction's waterproof performance, guaranteed the filtration performance of filter core body, prolonged the life of filter core body, and then guaranteed the normal operating of engine. The utility model also provides an engine, which comprises the air filter waterproof structure.

Description

Air filter waterproof structure and engine

Technical Field

The utility model relates to the technical field of engines, in particular to an air filter waterproof structure and an engine.

Background technique

The main function of the engine's air intake system is to supply clean, dry, sufficient and stable air to the engine to meet the engine's operating requirements. The air intake system mainly uses an air filter to filter the air.

If water enters the air filter, the water will soak the filter element, thereby reducing the filtering performance of the filter element, shortening the service life of the filter element, and further affecting the normal operation of the engine. Therefore, a waterproof structure of the air filter is proposed.

Utility Model Content

In view of the defects in the prior art, the purpose of the utility model is to provide an air filter waterproof structure and an engine to improve the waterproof performance and ensure the filtering performance of the filter element.

In order to achieve the above-mentioned purpose, the utility model provides an air filter waterproof structure, including a base, which is provided with a first air inlet hole and a first exhaust hole; a filter element body, which is arranged on the base and covers the outside of the first exhaust hole; a first shell, which covers the base and covers the outside of the filter element body and the first exhaust hole, and an installation cavity is formed between the first shell and the base; a second shell, which is arranged below the base, an air inlet cavity is provided in the second shell, a second air inlet hole connected to the first exhaust hole is provided at the top of the air inlet cavity, and a second exhaust hole is provided at the bottom of the air inlet cavity; and a baffle, which is arranged on the second shell and forms a mounting position with the second shell.

Preferably, the base is provided with a first enclosure, which is arranged outside the first air inlet and located in the installation cavity.

Preferably, a first waterproof step is provided on the base, the first waterproof step is arranged outside the first enclosure and the filter element body, and the first shell is overlapped on the first waterproof step.

Preferably, a mounting seat is provided in the air inlet cavity, and a mounting rod is provided on the mounting seat. The mounting rod extends upward and passes through the second air inlet hole, the first exhaust hole and the filter element body in sequence. The mounting rod is threaded with a first locking nut, and the first locking nut abuts against the top of the filter element body.

Preferably, a first through hole is provided on the top of the first shell, the top end of the mounting rod passes through the first through hole, a second locking nut is threadedly fitted on the mounting rod, and the second locking nut abuts against the top of the first shell.

Preferably, a sealing gasket is provided between the first shell and the second shell, the sealing gasket is provided with a second through hole, the edge of the second through hole extends to form a second enclosure, and the second enclosure passes through the first exhaust hole and then extends into the filter element body.

Preferably, the bottom of the base is recessed upward to form a first positioning groove, and the top surface of the sealing gasket is provided with a first positioning protrusion that matches the first positioning groove; a second positioning groove is provided on the second shell, and the second positioning groove is surrounded by the second air inlet hole, and the bottom surface of the sealing gasket is provided with a second positioning protrusion that matches the second positioning groove.

Preferably, a third air inlet hole is provided on the second shell, and the third air inlet hole is communicated with the air inlet cavity.

Preferably, the second shell and the baffle are in an integral structure.

The utility model also provides an engine, which is equipped with the above-mentioned air filter waterproof structure, and also includes a throttle valve body and an upper cover, wherein the throttle valve body is arranged in the installation position, and the throttle valve body is connected with the second exhaust hole; the throttle valve body is provided with an assembly port, and the end surface of the assembly port is formed with a second waterproof step, and the upper cover covers the assembly port and overlaps the second waterproof step.

Beneficial effects of the utility model:

The utility model discloses an air filter waterproof structure, in which the outside air can only flow upwards into the installation cavity through the first air inlet hole, and under the shielding of the base and the first shell, rainwater is effectively prevented from entering the installation cavity, thereby improving the waterproof performance of the air filter waterproof structure, ensuring the filtering performance of the filter element body, extending the service life of the filter element body, and thus ensuring the normal operation of the engine. At the same time, by designing a baffle on the second shell, the throttle valve body can be installed in the installation position, and under the shielding of the baffle and the base, the possibility of rainwater directly dripping on the throttle valve body is reduced, thereby avoiding rainwater from entering the throttle valve body, and improving the waterproof performance of the throttle valve body.

The utility model also discloses an engine, which prevents rainwater from entering the throttle body by using the air filter waterproof structure, improves the waterproof performance of the throttle body, and further ensures the stability of engine operation.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

FIG1 is a schematic structural diagram of an air filter waterproof structure provided by an embodiment of the utility model;

FIG2 is a schematic diagram of the structure of the first air inlet;

FIG3 is a schematic structural diagram of a base;

FIG4 is a schematic diagram of the structure of the bottom of the base;

FIG5 is a schematic diagram of the structure of the filter element body installed on the base;

FIG6 is a schematic structural diagram of the bottom of the filter element body;

FIG7 is a partial schematic diagram of the cooperation between the second locking nut and the mounting rod;

FIG8 is a schematic structural diagram of a second housing;

FIG9 is a schematic diagram of the structure of the sealing gasket and the second housing;

FIG10 is a schematic structural diagram of the bottom of the sealing gasket;

FIG11 is a schematic diagram of the structure of the throttle valve body installed in the installation position;

FIG12 is a schematic structural diagram of a throttle valve body;

Reference numerals:

10-base, 11-first air inlet, 12-first air outlet, 13-first enclosure, 14-first waterproof step, 15-first positioning groove;

20-filter element body, 21-third through hole;

30-first housing, 31-first through hole;

40 - second housing, 41 - air inlet cavity, 42 - second exhaust hole, 43 - mounting seat, 44 - second positioning groove, 45 - third air inlet hole;

50- baffle;

60-installation position;

70 - mounting rod;

81-first locking nut, 82-second locking nut;

90 - sealing pad, 91 - second enclosure, 92 - first positioning protrusion, 93 - second positioning protrusion.

100 - throttle valve body, 101 - assembly port, 102 - second waterproof step;

110-Upper cover.

Detailed ways

The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is more than two, unless otherwise clearly and specifically limited.

In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Embodiment 1

As shown in Fig. 1-10, in one embodiment of the utility model, an air filter waterproof structure is provided, including a base 10, a filter element body 20, a first shell 30, a second shell 40 and a baffle 50, the base 10 is penetrated with a first air inlet 11 and a first exhaust hole 12, the filter element body 20 is arranged on the base 10 and is covered outside the first exhaust hole 12. The first shell 30 covers the base 10 and is covered outside the filter element body 20 and the first exhaust hole 12, and an installation cavity is formed between the first shell 30 and the base 10. The second shell 40 is arranged below the base 10, and an air inlet cavity 41 is formed in the second shell 40, the top of the air inlet cavity 41 is provided with a second air inlet hole connected to the first exhaust hole 12, and the bottom of the air inlet cavity 41 is provided with a second exhaust hole 42. The baffle 50 is arranged on the second shell 40 and forms an installation position 60 with the second shell 40, the second shell 40 and the baffle 50 are integrally formed, and the installation position 60 is used to install the throttle body 100.

When the air filter waterproof structure is working, the outside air can only enter the installation cavity from bottom to top through the first air inlet hole 11, and can enter the first exhaust hole 12 after being purified by the filter element body 20. The purified air enters the air inlet cavity 41 from top to bottom through the second air inlet hole, and finally flows to the throttle valve body 100 from the second exhaust hole 42.

The present embodiment discloses a waterproof structure of an air filter, in which the outside air can only flow upward through the first air inlet 11 into the installation cavity. Under the shielding of the base 10 and the first shell 30, rainwater is effectively prevented from entering the installation cavity, thereby improving the waterproof performance of the waterproof structure of the air filter, ensuring the filtering performance of the filter element body 20, extending the service life of the filter element body 20, and further ensuring the normal operation of the engine. At the same time, by designing a baffle 50 on the second shell 40, the throttle body 100 can be installed at the installation position 60. Under the shielding of the baffle 50 and the base 10, the possibility of rainwater directly dripping on the throttle body 100 is reduced, thereby avoiding rainwater from entering the throttle body 100, improving the waterproof performance of the throttle body 100, and further ensuring the normal operation of the engine.

In one embodiment, the base 10 is provided with a first enclosure 13, which is arranged outside the first air inlet 11 and located in the installation cavity. The design of the first enclosure 13 prolongs the flow path of air entering the installation cavity through the first air inlet 11, thereby further eliminating the possibility of rainwater entering the installation cavity.

In one embodiment, a first waterproof step 14 is provided on the base 10, the first waterproof step 14 is arranged outside the first enclosure 13 and the filter element body 20, and the first shell 30 is overlapped on the first waterproof step 14. The first waterproof step 14 can prevent rainwater from entering the installation cavity through the gap at the connection between the base 10 and the first shell 30, thereby further improving the waterproof performance.

In one embodiment, a mounting seat 43 is provided in the air inlet cavity 41, and a mounting rod 70 is provided on the mounting seat 43. The mounting rod 70 extends upward and passes through the second air inlet hole, the first exhaust hole 12 and the filter element body 20 in sequence. The mounting rod 70 is threadedly matched with a first locking nut 81, and the first locking nut 81 abuts against the top of the filter element body 20. The top of the filter element body 20 is provided with a third through hole for the mounting rod 70 to pass through. When the filter element body 20 is installed on the base 10, the base 10 and the second housing 40 are assembled first, and then the mounting rod 70 is fixed on the mounting seat 43. Finally, the filter element body 20 is passed through the mounting rod 70 and the first locking nut 81 is tightened, so that the filter element body 20 is completely covered outside the first exhaust hole 12.

Furthermore, a first through hole 31 is provided at the top of the first housing 30, and the top of the mounting rod 70 passes through the first through hole 31. The mounting rod 70 is threadedly matched with a second locking nut 82, and the second locking nut 82 abuts against the top of the first housing 30. After the installation of the filter element body 20 is completed, the first housing 30 is covered on the base 10, and the mounting rod 70 is passed through the first through hole 31. Finally, the second locking nut 82 is tightened on the mounting rod 70 and abutted against the first housing 30, so that the first housing 30 can be fastened.

The design of the mounting rod 70 enables the base 10, the filter element body 20, the first shell 30 and the second shell 40 to be assembled as a whole, thereby improving and reducing the assembly difficulty of the structure and simplifying the number of components used in the overall structure, thereby saving production costs.

In one embodiment, in order to improve the sealing performance between the first shell 30 and the second shell 40, a sealing gasket 90 is provided between the first shell 30 and the second shell 40, and the sealing gasket 90 is provided with a second through hole. The edge of the second through hole extends to form a second enclosure 91, and the second enclosure 91 passes through the first exhaust hole 12 and extends into the filter element body 20.

In one embodiment, the bottom of the base 10 is recessed upward to form a first positioning groove 15, and the top surface of the sealing gasket 90 is provided with a first positioning protrusion 92 that matches the first positioning groove 15. The second shell 40 is provided with a second positioning groove 44, and the second positioning groove 44 is arranged outside the second air inlet. The bottom surface of the sealing gasket 90 is provided with a second positioning protrusion 93 that matches the second positioning groove 44. During assembly, when the first positioning protrusion 92 matches the first positioning groove 15, and the second positioning protrusion 93 matches the second positioning groove 44, the base 10, the sealing gasket 90 and the second shell 40 are accurately aligned, so that it is easy to quickly achieve assembly accuracy and ensure waterproof performance.

In one embodiment, the second housing 40 is provided with a third air inlet hole 45, which is in communication with the air inlet chamber 41. During the operation of the engine, the pressure in the crankcase needs to be balanced, and a portion of the mixed gas with engine oil needs to be discharged out of the crankcase through the cylinder head cover assembly. After the discharged mixed gas enters the air inlet chamber 41 through the third air inlet hole 45, it will mix with the air filtered by the filter body, and pass through the throttle body 100 together to enter the combustion chamber for combustion.

Embodiment 2

Referring to Fig. 11 and Fig. 12, in another embodiment of the utility model, an engine is provided, comprising the air filter waterproof structure in the above-mentioned embodiment 1, and further comprising a throttle body 100 and an upper cover 110, wherein the throttle body 100 is arranged in the installation position 60, and the throttle body 100 is communicated with the second exhaust hole 42. The throttle body 100 is provided with an assembly port 101, and the end surface of the assembly port 101 is formed with a second waterproof step 102, the upper cover 110 covers the assembly port 101 and overlaps the second waterproof step 102, and the connection between the upper cover 110 and the second waterproof step 102 is coated with glue.

The throttle body 100 is installed in the installation position 60. Under the shielding of the baffle 50 and the base 10, the possibility of rainwater directly dripping on the throttle body 100 is reduced, thereby preventing rainwater from entering the throttle body 100, improving the waterproof performance of the throttle body 100, and further ensuring the stability of engine operation. At the same time, the design of the second waterproof step 102 also further improves the waterproof performance of the throttle body 100.

In the specification of the present utility model, a lot of specific details are described. However, it is understood that the embodiments of the present utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this specification.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and description of the utility model.

Claims (10)

1. An air filter waterproof construction, characterized by comprising:

the base is provided with a first air inlet hole and a first air outlet hole;

the filter element body is arranged on the base and covers the first exhaust hole;

the first shell is covered on the base and covers the filter element body and the first exhaust hole, and an installation cavity is formed between the first shell and the base;

the second shell is arranged below the base, an air inlet cavity is arranged in the second shell, a second air inlet hole communicated with the first air outlet hole is formed in the top of the air inlet cavity, and a second air outlet hole is formed in the bottom of the air inlet cavity; and

and the baffle is arranged on the second shell and forms an installation position with the second shell.

2. The air filter waterproof structure according to claim 1, wherein the base is provided with a first enclosing shield, and the first enclosing shield is enclosed outside the first air inlet hole and is located in the installation cavity.

3. The air filter waterproof structure according to claim 2, wherein a first waterproof step is arranged on the base, the first waterproof step is enclosed outside the first enclosing shield and the filter element body, and the first shell is lapped on the first waterproof step.

4. The air filter waterproof structure according to claim 1, wherein an installation seat is arranged in the air inlet cavity, an installation rod is arranged on the installation seat, the installation rod extends upwards and sequentially penetrates through the second air inlet hole, the first air outlet hole and the filter element body, a first locking nut is in threaded fit with the installation rod, and the first locking nut is abutted to the top of the filter element body.

5. The air filter waterproof structure according to claim 4, wherein a first through hole is formed in the top of the first shell, the top end of the mounting rod penetrates through the first through hole, a second locking nut is in threaded fit with the mounting rod, and the second locking nut abuts against the top of the first shell.

6. The air filter waterproof structure according to claim 1, wherein a sealing gasket is arranged between the first shell and the second shell, the sealing gasket is provided with a second through hole, a second enclosing baffle is formed by extending the edge of the second through hole, and the second enclosing baffle extends into the filter element body after passing through the first exhaust hole.

7. The air filter waterproof structure according to claim 6, wherein a first positioning groove is formed by upwards sinking the bottom of the base, and a first positioning protrusion matched with the first positioning groove is arranged on the top surface of the sealing gasket;

the second shell is provided with a second positioning groove, the second positioning groove is surrounded outside the second air inlet hole, and the bottom surface of the sealing gasket is provided with a second positioning protrusion matched with the second positioning groove.

8. The air filter waterproof structure according to claim 1, wherein a third air inlet hole is formed in the second housing, and the third air inlet hole is communicated with the air inlet cavity.

9. The air filter waterproof structure according to claim 1, wherein the second housing is of an integral structure with the baffle.

10. An engine provided with the air filter waterproof structure as claimed in any one of claims 1 to 9, further comprising a throttle body and an upper cover, wherein the throttle body is arranged in the installation position, and the throttle body is communicated with the second exhaust hole; the air throttle body is provided with an assembly port, a second waterproof step is formed on the end face of the assembly port, and the upper cover covers the assembly port and is lapped on the second waterproof step.