WO2020054672A1

WO2020054672A1 - Cap for air cleaner

Info

Publication number: WO2020054672A1
Application number: PCT/JP2019/035400
Authority: WO
Inventors: 幸博川島
Original assignee: いすゞ自動車株式会社
Priority date: 2018-09-10
Filing date: 2019-09-09
Publication date: 2020-03-19
Also published as: JP2020041475A; CN112703310A; CN112703310B; DE112019004509T5

Abstract

An air cleaner cap is provided which is placed over an opening of an air cleaner and which does not come off easily. This cap (20) for an air cleaner is placed over a cylindrical first protrusion (142) or second protrusion (152) provided protruding around a first discharge hole (14) or a second discharge hole (15) in the air cleaner (10), and the air cleaner cap comprises a lid (21), an inside wall (22) which protrudes from the lid (21) and which contacts the inside of the side surface of the first protrusion (142) or the second protrusion (152), and an outside wall (23) which protrudes from the lid (21) and which contacts the outside of the side surface of the first protrusion (142) or the second protrusion (152).

Description

Air cleaner cap

The present disclosure relates to a cap for closing a hole provided in an air cleaner used for an internal combustion engine or the like.

エア Air cleaners for purifying intake air from internal combustion engines and the like are widely used. As an example of an air cleaner, for example, there is an air cleaner in which air flowing in from an inlet is purified while passing through a filter, and the purified air flows out of an outlet.

開口 In such an air cleaner, an opening may be provided in a part of the case for drainage or the like. In an air cleaner having such an opening, a cap is put on the opening in order to prevent dust, water, and the like from entering the opening. For example, Patent Document 1 discloses a configuration in which drainage and prevention of intrusion of dust and water can be performed at the same time by covering a cap provided with a check valve over a drainage opening.

Japanese Patent Application Laid-Open No. 8-178101

ため Since the air cleaner sucks the air supplied to the internal combustion engine, the force applied to the cap covering the opening is mainly from the outside to the inside of the air cleaner. However, a force from the inside to the outside of the air cleaner may be applied to the cap due to pulsation of the internal combustion engine or the like. In such a case, since the cap may come off, there is a demand for a cap that is difficult to come off.

The present disclosure has an object to provide a cap for an air cleaner that is hard to come off and covers the opening of the air cleaner.

An air cleaner cap according to an aspect of the present disclosure is an air cleaner cap that is placed over a cylindrical protrusion provided to protrude around a liquid discharge hole of an air cleaner, and includes a lid, A first wall body protruding and contacting the inside of the side surface of the protrusion; and a second wall body protruding from the lid and contacting the outside of the side surface of the protrusion.

According to the present disclosure, it is possible to make it difficult for the cap that covers the opening of the air cleaner to come off even if the direction of the applied force changes.

FIG. 1 is a diagram for describing an appearance of an air cleaner according to an embodiment of the present disclosure. Diagram illustrating the case where the air cleaner is installed vertically The figure which illustrated the flow of the air which flowed into the case in the horizontal state of the air cleaner. Diagram illustrating the flow of water flowing into the case when the air cleaner is placed horizontally. The figure which illustrated the flow of the air and water which flowed into the case in the vertical installation state of the air cleaner. Illustration for explaining the cap Illustration for explaining the cap Illustration for explaining the cap

Hereinafter, each embodiment of the present disclosure will be described in detail with reference to the drawings. However, an unnecessary detailed description, for example, a detailed description of a well-known matter or a redundant description of substantially the same configuration may be omitted.

FIG. 1 is a diagram for describing an appearance of an air cleaner 10 according to an embodiment of the present disclosure. As shown in FIG. 1, the air cleaner 10 has a substantially cylindrical case 11, an inlet pipe 12, an outlet pipe 13, a first discharge hole 14, and a second discharge hole 15. Note that FIG. 4 to be described later from FIG. 1 shows the vertical direction in this specification.

The case 11 is formed in a substantially cylindrical shape. An inlet pipe 12, which is a pipe through which air flows into the case 11, is connected to a part of the cylindrical side surface of the case 11. Further, an outlet pipe 13 which is a pipe through which air in the case 11 flows out is connected to one of the cylindrical bottom surfaces of the case 11.

The air cleaner 10 is mounted on a vehicle such as a truck, for example. Although not shown, the inlet pipe 12 is connected to an air intake or the like of the vehicle via a rubber tube or the like, and the outlet pipe 13 is connected to an internal combustion engine such as an engine. Thereby, the air cleaner 10 can purify the air taken in from the air intake and supply it to the internal combustion engine.

The first discharge hole 14 and the second discharge hole 15 are holes for discharging liquid such as water flowing into the case 11 out of the case 11. Note that what is discharged from the first discharge hole 14 and the second discharge hole 15 is not limited to water, but may be another liquid such as oil. As shown in FIG. 1, the first discharge hole 14 is provided on a part of the side surface of the case 11, and the second discharge hole 15 is provided on a part of the bottom surface of the case 11.

Thus, the air cleaner 10 has a plurality of discharge holes. The plurality of discharge holes are provided to cope with the case where the air cleaner 10 is installed in a plurality of installation states. The plurality of installation states include different installation states assumed at the time of designing the air cleaner 10 in advance.

The air cleaner 10 according to the present embodiment is installed in a horizontal state in which both bottom surfaces of a cylindrical case 11 face sideways as shown in FIG. 1, and as shown in FIG. It is assumed in advance that it will be installed even in a vertically placed state in which both bottom surfaces of 11 are vertically (up and down). FIG. 2 is a diagram exemplifying a case where the air cleaner 10 is installed vertically.

When the air cleaner 10 shown in FIG. 1 is placed horizontally, the inlet pipe 12 is positioned above the case 11, the outlet pipe 13 and the second discharge hole 15 are positioned laterally, and the first discharge hole 14 is positioned lower. become.

On the other hand, in the vertically placed state of the air cleaner 10 shown in FIG. 2, the inlet pipe 12 and the first discharge hole 14 are located on the side of the case 11, the outlet pipe 13 is located on the upper side, and the second discharge hole 15 is located on the lower side. Become like

With this configuration, either the first discharge hole 14 or the second discharge hole 15 is located at the lowermost part of the case 11 regardless of whether the air cleaner 10 is in the horizontal state or the vertical state. Therefore, when water flows into the case 11 together with air from the inlet pipe 12, the water is discharged from the discharge hole located at the lowermost part of the case 11. As described above, water can be drained appropriately regardless of the state of the air cleaner 10 installed in any of a plurality of installation states assumed in advance. Therefore, the air cleaner 10 can be used in either the horizontal state or the vertical state.

Hereinafter, the flow of air and water flowing into the air cleaner 10 will be described. FIG. 3A is a diagram exemplifying the flow of air flowing into the case 11 when the air cleaner 10 is placed horizontally. The dashed line arrow in FIG. 3A illustrates the flow of air. FIG. 3B is a diagram exemplifying a flow of water flowing into the case 11 when the air cleaner 10 is placed horizontally. The dotted arrows in FIG. 3B illustrate the flow of water. FIG. 4 is a diagram exemplifying flows of air and water flowing into the case 11 when the air cleaner 10 is placed vertically.

3A is a cross-sectional view of the air cleaner 10 in a horizontal state on a plane including the central axis of the columnar shape of the case 11 and passing through the first discharge hole 14. FIG. 3B is a cross-sectional view of the air cleaner 10 in a horizontal state on a plane perpendicular to the central axis of the cylindrical shape of the case 11 and passing through the first discharge hole 14. FIG. 4 is a cross-sectional view of the air cleaner 10 in a vertically installed state on a plane including the central axis of the columnar shape of the case 11 and passing through the second discharge hole 15.

ケース As shown in FIGS. 3A, 3B and 4, a filter element 111, a first space 112, and a second space 113 are provided inside the case 11.

The filter element 111 is a filter element generally called a chrysanthemum flower type formed by folding a filter material such as a nonwoven fabric or a filter paper into a pleated shape, and further bending the pleated filter material into a cylindrical shape. The filter element 111 allows air (gas) to pass through but not water (liquid). The inside of the case 11 of the air cleaner 10 is divided into a first space 112 and a second space 113 by a filter element 111.

The first space 112 is a space formed by the inner wall surface of the case 11 and the filter element 111. The second space 113 is a space inside the filter element 111 having a cylindrical shape.

As shown in FIGS. 3A and 4, the air flowing into the case 11 from the inlet pipe 12 passes through the first space 112, passes through the filter element 111, is filtered, and reaches the second space 113. Then, the purified air in the second space 113 flows out through the outlet pipe 13 to the outside.

On the other hand, as shown in FIGS. 3B and 4, the water flowing from the inlet pipe 12 flows in the first space 112 without passing through the filter element 111, and the water in the case 11 according to the installation direction of the air cleaner 10. It is discharged outside through a discharge hole located at the bottom. The discharge hole located at the lowermost part of the case 11 is the first discharge hole 14 when the air cleaner 10 is horizontally placed as shown in FIG. 3B, and is the second discharge hole 15 when the air cleaner 10 is vertically installed as shown in FIG. . As described above, the water is discharged from any one of the plurality of discharge holes of the air cleaner 10 according to the installation state.

排水 It is desirable that a drain valve be provided in the discharge hole from which water is discharged. That is, as shown in FIG. 3A, when the air cleaner 10 is placed horizontally, the first drain valve 141 is provided in the first discharge hole 14. Similarly, as shown in FIG. 4, when the air cleaner 10 is placed vertically, the second drain hole 151 is provided with the second drain valve 151. The specific configurations of the first drain valve 141 and the second drain valve 151 are not particularly limited in the present disclosure. For example, a check valve for preventing dust and water from entering the air cleaner 10 from the outside to the inside, or automatically discharging water with a weight of water when a predetermined amount or more of water is accumulated in the discharge hole. Various valves, such as such a valve, or an on-off valve that is arbitrarily opened and closed by a vehicle maintenance person or the like to discharge water, may be employed.

While the air cleaner 10 is placed horizontally, water is not discharged from the second discharge holes 15 not located at the lowermost part of the case 11. For this reason, as shown in FIGS. 1 and 3A, when the air cleaner 10 is placed horizontally, the second discharge hole 15 is closed so that dust and water do not enter and air does not escape. Is desirable.

Similarly, when the air cleaner 10 is placed vertically, water is not discharged from the first discharge holes 14 not located at the lowermost part of the case 11. For this reason, as shown in FIGS. 2 and 4, it is desirable that the first discharge hole 14 be closed when the air cleaner 10 is placed vertically.

Hereinafter, the cap 20 for closing the first discharge hole 14 or the second discharge hole 15 will be described. As shown in FIG. 3A, a first protrusion 142 having a cylindrical shape protruding toward the outside of the case 11 is provided around the first discharge hole 14. Similarly, as shown in FIG. 4, around the second discharge hole 15, a cylindrical second protruding portion 152 protruding toward the outside of the case 11 is provided. When closing the first discharge hole 14 or the second discharge hole 15, the cap 20 is put on the distal end portion of the first protrusion 142 or the second protrusion 152. The cap 20 is formed of an elastic resin such as rubber, for example. With such a cap 20, dust and water can be prevented from entering from a discharge hole not used for draining, and the air in the air cleaner 10 can be prevented from being released.

FIGS. 5A to 5C are views for explaining the cap 20. FIG. As shown in FIGS. 5A and 5B, the cap 20 has a lid portion 21, an inner side wall 22, and an outer side wall 23. In FIG. 5A, the cap 20 is viewed from the lid 21 side, and in FIG. 5B, the cap 20 is viewed from the inner side wall 22 and the outer side wall 23 side. The inner wall 22 is an example of a first wall of the present disclosure, and the outer wall 23 is an example of a second wall of the present disclosure.

In the following description, for the sake of simplicity, the case where the cap 20 is covered by the first protrusion 142 provided around the first discharge hole 14 will be described. The description of the case where the second projection 152 is covered with the second projection 152 will be omitted.

The lid 21 is a part that becomes a lid that closes the first discharge hole 14 when the cap 20 is put on the first protrusion 142. When the cap 20 is put on the first protrusion 142, the inner wall 22 and the outer wall 23 come into contact with the outside or inside of the cylindrical side surface of the first protrusion 142, so that the cap 20 is moved to the first protrusion. It is a member for fixing to 142. That is, the cap 20 has a structure that is hard to come off by sandwiching the side surface of the first protruding portion 142 between the inner side wall 22 and the outer side wall 23. In FIG. 5B, the distance between the inner wall 22 and the outer wall 23 is emphasized, but the distance between the inner wall 22 and the outer wall 23 is actually equal to the thickness of the side surface of the first protrusion 142. It is formed almost the same.

FIG. 5C is a cross-sectional view in a plane including the central axis of the cap 20 in a state where the cap is covered with the first discharge hole 14. As shown in FIG. 5C, the inner wall 22 is in close contact with the inside of the side surface of the first protrusion 142, and the outer wall 23 is in close contact with the outside of the side surface of the first protrusion 142. With such a configuration, compared to a case where the inner wall is not provided and only the outer wall is in close contact with the outside of the side surface of the protrusion, the cap 20 is in contact with the side surface of the first protrusion 142. A large area can be taken. For this reason, the cap 20 can be made hard to come off from the first protrusion 142 due to friction.

With such a configuration, the cap 20 can be made hard to come off even if a force from the inside to the outside as well as a force from the outside to the inside of the air cleaner 10 is applied to the cap 20. In addition, when the cap 20 is attached to the first protruding portion 142, the cap 20 can be attached simply by being fitted, so that the attachment is easy. With such a configuration, the cap 20 can easily close the discharge hole that is not used for drainage. In the above description, the case where the cap 20 is attached to the first protrusion 142 has been described, but the same applies to the case where the cap 20 is attached to the second protrusion 152.

<Action and effect>
As described above, the cap 20 according to the embodiment of the present disclosure has the cylindrical first protrusion 142 provided so as to protrude around the first discharge hole 14 or the second discharge hole 15 of the air cleaner 10. Or, a cap 20 for an air cleaner put on the second protrusion 152, the cover 21 and an inner wall protruding from the cover 21 and contacting the inside of the side surface of the first protrusion 142 or the second protrusion 152. 22, and an outer wall 23 protruding from the lid 21 and in contact with the outside of the side surface of the first protrusion 142 or the second protrusion 152.

With such a configuration, the cap 20 is provided with the first protruding portion 142 or the second protruding portion as compared with the case where the inner wall is not provided and only the outer wall is in close contact with the outside of the side surface of the protruding portion. A large contact area with the side surface of 152 can be obtained. For this reason, it is possible to make it difficult for the cap 20 to come off the first protrusion 142 or the second protrusion 152 due to friction.

<Modification>
The embodiments according to the present disclosure have been described with reference to the drawings, but the present disclosure is not limited to such examples. It will be apparent to those skilled in the art that various changes or modifications can be made within the scope of the claims, and these naturally belong to the technical scope of the present disclosure. I understand. Further, each component in the above embodiment may be arbitrarily combined without departing from the spirit of the disclosure.

In the above embodiment, the air cleaner 10 is mounted on a vehicle having an internal combustion engine such as a truck, but the present disclosure is not limited to this. For example, the present invention can be applied to agricultural machines and construction machines, pumps, generators, and the like having an internal combustion engine.

In the embodiment described above, the air cleaner 10 is provided with the inlet pipe 12 and the outlet pipe 13 in the cylindrical case 11, but the present disclosure is not limited to this. In the air cleaner of the present disclosure, the shape of the case including the inlet pipe and the outlet pipe is not particularly limited, and may be any shape. Specific examples of the shape of the case include a rectangular parallelepiped, a cube, a cylinder, a cone, a truncated cone, a triangular pyramid, and a shape configured by any combination thereof. In the present specification, each shape is not strict, but indicates a general shape. That is, the cylindrical shape of the case 11 in the above-described embodiment may include, for example, a shape in which a part of a cylinder is cut off, or a shape in which another shape is added to a cylinder. The same applies to other shapes.

In the above-described embodiment, as an example of the air cleaner, the air cleaner 10 that purifies the air using the chrysanthemum-shaped filter element 111 has been described, but the present disclosure is not limited to this. The present disclosure may be, for example, an air cleaner that uses other shapes or types of filter elements. Further, for example, an air cleaner of another type such as a cyclone type may be used.

In the above-described embodiment, an example in which the inlet pipe 12, the outlet pipe 13, the first discharge hole 14, and the second discharge hole 15 are arranged in the same plane in FIGS. 3A, 3B, 4 and the like has been described. However, the present disclosure is not limited to this. These components need not necessarily be arranged on the same plane, and may be arranged on different planes as appropriate.

In the above-described embodiment, the horizontal state and the vertical state are described as examples of the arrangement state of the air cleaner 10, but the present disclosure is not limited thereto. In the present disclosure, it may be assumed that the air cleaner is arranged in three or more types of arrangement states according to the environment in which the air cleaner is installed. Here, the installed environment specifically means an installation space for an air cleaner, a space for piping, a positional relationship with an internal combustion engine, a positional relationship with an air intake, and the like. When the air cleaner of the present disclosure is assumed to be arranged in a plurality of directions, one drain hole is formed in the vicinity of the lowermost portion of the air cleaner in each direction. I just need.

This application is based on a Japanese patent application filed on Sep. 10, 2018 (Japanese Patent Application No. 2018-169014), the contents of which are incorporated herein by reference.

The present disclosure is useful for an air cleaner cap attached to an air cleaner that purifies air supplied to an internal combustion engine.

DESCRIPTION OF SYMBOLS 20 Cap 21 Lid part 22 Inner side wall 23 Outer side wall 10 Air cleaner 11 Case 111 Filter element 112 1st space 113 2nd space 12 Inlet pipe 13 Outlet pipe 14 1st discharge hole 141 1st drain valve 142 1st projected part 15 2nd Discharge hole 151 Second drain valve 152 Second protrusion

Claims

An air cleaner cap that is placed over a cylindrical protrusion provided to protrude around a liquid discharge hole of the air cleaner,
A lid,
A first wall protruding from the lid and in contact with the inside of a side surface of the protrusion;
A second wall protruding from the lid and in contact with the outside of a side surface of the protruding portion;
A cap for an air cleaner having:
The first wall is in close contact with the inside of the side surface of the protrusion,
The second wall body is in close contact with the outside of the side surface of the protrusion.
The air cleaner cap according to claim 1.
The air cleaner has a first protrusion provided around a first liquid discharge hole for discharging liquid when the air cleaner is installed in the first installation state, and a first protrusion different from the first installation state. A second protruding portion provided around a second liquid discharge hole for discharging a liquid when the liquid is set in the setting state of No. 2;
In the case where the air cleaner is installed in the first installation state, the air cleaner is installed in the second installation state by covering the second protrusion and covering the second liquid discharge hole. In this case, the first liquid discharging hole is covered by being covered with the first projecting portion,
The cap for an air cleaner according to claim 1.
The case of the air cleaner has a cylindrical shape,
The first installation state is a horizontal installation state in which both bottom surfaces of the case are respectively oriented in the horizontal direction, and the second installation state is a vertical installation state in which both bottom surfaces of the case are each vertically oriented. ,
When the air cleaner is installed in the horizontal state, the air cleaner is covered by the first protrusion provided on a part of a side surface of the case in a cylindrical shape,
When the air cleaner is installed in the vertically placed state, the air cleaner is put on the second protrusion provided on a part of the bottom surface of the case in a columnar shape,
The air cleaner cap according to claim 3.