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 construction 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

The main function of the air inlet system of the engine is to convey clean, dry, sufficient and stable air for the engine so as to meet the running requirement of the engine, and the air inlet system mainly utilizes an air filter to realize the filtration of the air.

If the air filter has the water inlet problem, the water wets the filter element, so that the filtering performance of the filter element is reduced, the service life of the filter element is shortened, and the normal operation of an engine is influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide an air filter waterproof structure and an engine so as to improve the waterproof performance and ensure the filtering performance of a filter element.

In order to achieve the above object, the present utility model provides a waterproof structure of an air filter, comprising a base 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 a baffle plate arranged on the second shell and forming an installation position with the second shell.

Preferably, the base is provided with a first enclosing baffle, and the first enclosing baffle is enclosed outside the first air inlet hole and is positioned in the mounting cavity.

Preferably, the base is provided with a first waterproof step, 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.

Preferably, the air inlet cavity is internally provided with a mounting seat, the mounting seat is provided with a mounting rod, the mounting rod extends upwards and sequentially penetrates through the second air inlet hole, the first air outlet hole and the filter element body, the mounting rod is provided with a first locking nut in a threaded fit manner, and the first locking nut is abutted to the top of the filter element body.

Preferably, 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 lock nut is in threaded fit with the mounting rod, and the second lock nut abuts against the top of the first shell.

Preferably, a sealing gasket is arranged between the first shell and the second shell, a second through hole is formed in the sealing gasket, a second enclosing baffle is formed by extending the edge of the second through hole, and the second enclosing baffle penetrates through the first exhaust hole and then stretches into the filter element body.

Preferably, a first positioning groove is formed in the upward depression of 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.

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

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

The utility model also provides an engine, which is provided with the air filter waterproof structure and further comprises an air throttle body and an upper cover, wherein the air throttle body is arranged in the installation position, and the air 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.

The utility model has the beneficial effects that:

the utility model discloses a waterproof structure of an air filter, wherein outside air can only flow into a mounting front part from a first air inlet hole upwards, and under the shielding of a base and a first shell, rainwater is effectively prevented from entering a mounting cavity, so that the waterproof performance of the waterproof structure of the air filter is improved, the filtering performance of a filter element body is ensured, the service life of the filter element body is prolonged, and the normal operation of an engine is further ensured. Meanwhile, by designing the baffle on the second shell, the throttle valve body can be arranged at the installation position, under the shielding of the baffle and the base, the possibility that rainwater directly drops on the throttle valve body is reduced, so that the rainwater is prevented from entering the throttle valve body, and the waterproof performance of the throttle valve body is improved.

The utility model also discloses an engine, by using the air filter waterproof structure, rainwater is prevented from entering the throttle valve body, the waterproof performance of the throttle valve body is improved, and the running stability of the engine is further ensured.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of a waterproof structure of an air filter according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a first air inlet;

FIG. 3 is a schematic view of the structure of the base;

FIG. 4 is a schematic view of the structure of the bottom of the base;

FIG. 5 is a schematic view of the structure of the cartridge body mounted on the base;

FIG. 6 is a schematic view of the structure of the bottom of the cartridge body;

FIG. 7 is a partial schematic view of the second lock nut mated with the mounting rod;

FIG. 8 is a schematic structural view of the second housing;

FIG. 9 is a schematic view of the gasket mated with the second housing;

FIG. 10 is a schematic view of the structure of the gasket bottom;

FIG. 11 is a schematic view of a throttle body mounted in a mounting location;

FIG. 12 is a schematic structural view of a damper body;

reference numerals:

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

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

30-a first housing, 31-a first through hole;

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

50-baffle plates;

60-mounting position;

70-mounting a rod;

81-a first lock nut, 82-a second lock nut;

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

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

110-upper cover.

Detailed Description

Embodiments of the technical scheme of the present utility model will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and thus are merely examples, and are not intended to limit the scope of the present utility model.

It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. In the description of the present utility model, the meaning of "plurality" is two or more unless specifically defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

Example 1

As shown in fig. 1 to 10, in an embodiment of the present utility model, there is provided a waterproof structure of an air filter, which includes a base 10, a filter element body 20, a first housing 30, a second housing 40, and a baffle 50, wherein the base 10 is penetrated with a first air inlet 11 and a first air outlet 12, and the filter element body 20 is disposed on the base 10 and covers the first air outlet 12. The first housing 30 covers the base 10 and covers the filter element body 20 and the first exhaust hole 12, and an installation cavity is formed between the first housing 30 and the base 10. The second housing 40 is disposed below the base 10, an air intake cavity 41 is formed in the second housing 40, a second air intake hole communicating with the first air exhaust hole 12 is disposed at the top of the air intake cavity 41, and a second air exhaust hole 42 is disposed at the bottom of the air intake cavity 41. The baffle 50 is disposed on the second housing 40 and forms a mounting location 60 with the second housing 40, the second housing 40 is integrally formed with the baffle 50, and the mounting location 60 is used for mounting the damper body 100.

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

According to the air filter waterproof structure disclosed by the embodiment, external air can only flow into the interior before installation from the upward through the first air inlet holes 11, and under the shielding of the base 10 and the first shell 30, rainwater is effectively prevented from entering the installation cavity, so that the waterproof performance of the air filter waterproof structure is improved, the filtering performance of the filter element body 20 is ensured, the service life of the filter element body 20 is prolonged, and the normal operation of an engine is further ensured. Meanwhile, by designing the baffle 50 on the second housing 40, the throttle body 100 can be installed at the installation position 60, and under the shielding of the baffle 50 and the base 10, the possibility that rainwater directly drops on the throttle body 100 is reduced, so that the rainwater is prevented from entering the throttle body 100, the waterproof performance of the throttle body 100 is improved, and the normal operation of an engine is further ensured.

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

In one embodiment, the base 10 is provided with a first waterproof step 14, the first waterproof step 14 is enclosed outside the first enclosing cover 13 and the filter element body 20, and the first shell 30 is lapped on the first waterproof step 14. The first waterproof step 14 can prevent rainwater from entering the installation cavity through the gap at the junction of the base 10 and the first housing 30, thereby further improving waterproof performance.

In one embodiment, the air inlet cavity 41 is internally provided with a mounting seat 43, the mounting seat 43 is provided with a mounting rod 70, the mounting rod 70 extends upwards and sequentially passes through the second air inlet hole, the first air outlet hole 12 and the filter element body 20, a first locking nut 81 is in threaded fit with the mounting rod 70, 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 through which the installation rod 70 can pass, when the filter element body 20 is installed on the base 10, the base 10 and the second shell 40 are assembled, then the installation rod 70 is fixed on the installation seat 43, and finally the filter element body 20 is arranged on the installation rod 70 in a penetrating way and the first locking nut 81 is screwed, so that the filter element body 20 is completely covered outside the first exhaust hole 12.

Further, a first through hole 31 is formed in the top of the first housing 30, the top end of the mounting rod 70 passes through the first through hole 31, a second lock nut 82 is screwed on the mounting rod 70, and the second lock 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, the installation rod 70 passes through the first through hole 31, and finally, the second lock nut 82 is screwed on the installation rod 70 and abuts against the first housing 30, so that the first housing 30 can be fastened.

The design of the mounting rod 70 can integrally assemble and form the base 10, the filter element body 20, the first shell 30 and the second shell 40, so that the assembly difficulty of the structure is improved, the use number of parts of the whole structure is simplified, and the production cost is saved.

In one embodiment, in order to improve the tightness of the first housing 30 and the second housing 40, a sealing gasket 90 is disposed between the first housing 30 and the second housing 40, the sealing gasket 90 is provided with a second through hole, and a second enclosure 91 is formed by extending the edge of the second through hole, and the second enclosure 91 extends into the filter element body 20 after passing through the first exhaust hole 12.

In one embodiment, the bottom of the base 10 is formed with a first positioning groove 15 in an upward recess, and the top surface of the gasket 90 is provided with a first positioning protrusion 92 that mates with the first positioning groove 15. The second casing 40 is provided with a second positioning groove 44, the second positioning groove 44 is surrounded outside the second air inlet hole, and the bottom surface of the sealing gasket 90 is provided with a second positioning protrusion 93 matched with the second positioning groove 44. When the first positioning protrusion 92 is matched with the first positioning groove 15 and the second positioning protrusion 93 is matched with the second positioning groove 44 during assembly, accurate alignment of the base 10, the sealing gasket 90 and the second shell 40 is achieved, so that assembly accuracy is convenient to achieve rapidly, and waterproof performance is guaranteed.

In one embodiment, the second housing 40 is provided with a third air inlet hole 45, and the third air inlet hole 45 communicates with the air inlet cavity 41. In the working process of the engine, the pressure in the crankcase needs to be balanced, a part of mixed gas with engine oil needs to be discharged out of the crankcase through the cylinder head cover assembly, and the discharged mixed gas enters the air inlet cavity 41 through the third air inlet hole 45, is mixed with air filtered by the filtering body and enters the combustion chamber through the throttle body 100 together for combustion.

Example two

Referring to fig. 11 and 12, in another embodiment of the present utility model, an engine is provided, which includes the air filter waterproof structure of the first embodiment, and further includes a throttle body 100 and an upper cover 110, wherein the throttle body 100 is disposed in the mounting position 60, and the throttle body 100 communicates with the second exhaust hole 42. The throttle valve body 100 is provided with an assembly port 101, a second waterproof step 102 is formed on the end face of the assembly port 101, an upper cover 110 covers the assembly port 101 and is lapped on the second waterproof step 102, and glue solution is coated at the joint of the upper cover 110 and the second waterproof step 102.

The throttle body 100 is installed in the installation position 60, under the shielding of the baffle 50 and the base 10, the possibility that rainwater directly drops on the throttle body 100 is reduced, so that the rainwater is prevented from entering the throttle body 100, the waterproof performance of the throttle body 100 is improved, and the running stability of an engine is further ensured. Meanwhile, the design of the second waterproof step 102 further improves the waterproof performance of the damper body 100.

In the description of the present utility model, numerous specific details are set forth. However, it is understood that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model, and are intended to be included within the scope of the appended claims and description.

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.