JP2014168733A - Cylindrical air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cylindrical air cleaner capable of suitably suppressing the intrusion of foreign matter such as dust and the like through the opening of an outlet pipe when a filter element is detached while suitably suppressing the increase of ventilation resistance.SOLUTION: An air cleaner 10 comprises: a cylindrical case 20 having a one-side bottom; a cylindrical filter element 40 housed within the case 20; and a cap 30 capable of opening or closing the opening of the case 20. The inside of the case 20 is equipped with: an outlet pipe 24 protruded to the bottom wall 22 of the case 20 and externally inserted with the filter element 40; a lid 50 capable of opening or closing the opening 24a of the outlet pipe 24; and an interlocking mechanism 60 to interlock the attaching and detaching motions of the filter element 40 to the outlet pipe 24 and the opening and closing motions of the opening 24a by the lid 50.

Description

  The present invention relates to a cylindrical air cleaner for an engine.

  In general, a cylindrical air cleaner includes a bottomed cylindrical case having an opening on one side, a cylindrical filter element accommodated in the case, and a cap capable of opening and closing the opening of the case. An introduction port is formed in the peripheral wall of the case, and a discharge port is formed in the bottom wall of the case.

  Conventionally, in a cylindrical air cleaner of an in-vehicle engine for a dusty area, an inner element is fixed between a filter element and a discharge port (see, for example, Patent Document 1). According to such an air cleaner, when the filter element is removed for replacement or the like, foreign elements such as dust are prevented from entering the engine side through the discharge port by the inner element.

JP 2006-35208 A

  However, in the case of a conventional air cleaner provided with such an inner element, the entire cross section of the flow path in the case is always blocked by the inner element. Therefore, although the inner element has air permeability, the air resistance is increased.

  An object of the present invention is to provide a cylindrical air cleaner capable of suitably suppressing foreign matter such as dust from entering through a discharge port when a filter element is removed while suitably suppressing an increase in ventilation resistance. There is.

  In order to achieve the above object, a cylindrical air cleaner includes a one-side bottomed cylindrical case, a cylindrical filter element accommodated in the case, and a cap capable of opening and closing the opening of the case. Also, inside the case is an outlet pipe that protrudes from the bottom wall of the case and into which the filter element is externally inserted, a lid that can open and close the opening of the outlet pipe, and an attachment / detachment operation of the filter element to and from the outlet pipe And an interlocking mechanism for interlocking with the opening / closing operation of the opening.

  According to this configuration, the opening of the outlet pipe is closed by the lid when the filter element is removed from the outlet pipe. In this state, when the filter element is attached to the outlet pipe, the opening of the outlet pipe is opened by opening the lid through the interlocking mechanism. For this reason, the increase in ventilation resistance when air passes through the opening of the outlet pipe is suitably suppressed.

  In this state, when the filter element is removed from the outlet pipe, the opening of the outlet pipe is closed by closing the lid through the interlocking mechanism. For this reason, when a filter element is replaced, foreign matters such as dust are prevented from entering through the opening of the outlet pipe.

  ADVANTAGE OF THE INVENTION According to this invention, it can suppress suitably that foreign materials, such as dust, penetrate | invade through opening of an outlet pipe, when a filter element is removed, suppressing the increase in ventilation resistance suitably.

The perspective view of the air cleaner in 1st Embodiment. FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. The enlarged view which expands and shows centering on the opening inside the case of an outlet pipe. (A) is sectional drawing of the lid | cover along the 4a-4a line | wire of FIG. 3, (b) is a top view of the lid | cover seen from the arrow 4b of FIG. (A)-(c) is a figure corresponding to FIG. 2, Comprising: The figure for demonstrating an effect | action of the air cleaner of the embodiment. The air cleaner in 2nd Embodiment is an enlarged view which expands and shows centering the opening inside the case of an outlet pipe, (a) is a figure of the state by which the opening is open | released, (b) is the opening. The figure of the state where is blocked.

<First Embodiment>
Hereinafter, with reference to FIGS. 1-5, 1st Embodiment which actualized the cylindrical air cleaner is described.

  As shown in FIGS. 1 and 2, the air cleaner 10 includes a cylindrical case 20 with a bottom on one side, a cylindrical filter element 40 housed inside the case 20, and a cap 30 that can open and close the opening of the case 20. I have.

  A cylindrical outlet pipe 24 is provided on the bottom wall 22 of the case 20 so as to project inward and outward of the case 20 along the axial direction of the case 20. The outlet pipe 24 is provided coaxially with the case 20. An inlet pipe 28 is formed on the peripheral wall of the case 20. Note that the case 20 and the cap 30 are made of, for example, a synthetic resin material.

  The filter element 40 is formed of a non-woven fabric, and sealing materials 41 and 42 are respectively fixed to the distal end and the proximal end. The sealing materials 41 and 42 are in contact with the bottom wall 22 of the case 20 and the inner bottom surface of the cap 30, respectively, and the filter elements 40 and the case 20 and the cap 30 are sealed by the sealing materials 41 and 42, respectively. The sealing materials 41 and 42 are made of, for example, a well-known foamed resin material.

  Inside the case 20, a lid 50 that can open and close the opening 24 a of the outlet pipe 24, and an interlocking mechanism 60 that links the attachment / detachment operation of the filter element 40 to the outlet pipe 24 and the opening / closing operation of the opening 24 a by the lid 50 are provided. It has been.

  As shown in FIG. 3, a bearing 26 is provided at the edge of the opening 24 a of the outlet pipe 24, and a lid 50 is rotatably supported on the bearing 26 via a shaft 53. The edge of the opening 24a of the outlet pipe 24 is cut out in an arc shape. That is, when a straight line that passes through the bearing 26 and is orthogonal to the axis C of the outlet pipe 24 is a virtual line V, the edge of the opening 24a of the outlet pipe 24 is at the center X of the outlet pipe 24 in the direction in which the virtual line V extends. The closer the part is, the closer to the bottom wall 22 side of the case 20.

  As shown in FIGS. 3 and 4 (a) and 4 (b), the lid 50 has a sheet 51 made of non-woven fabric, and the lid 50 closes the opening 24a of the outlet pipe 24. The sheet 51 of the lid 50 is curved so that the part away from the imaginary line V is located on the bottom wall 22 side of the case 20. A reinforcing portion 52 that reinforces the sheet 51 is fixed to the outer periphery of the sheet 51. The reinforcing portion 52 is formed of, for example, a hard synthetic resin material similar to the case 20 and the cap 30. The shaft 53 is fixed to the reinforcing portion 52.

  Further, as shown in FIG. 5C, the shaft 53 has a pressure receiving piece 54 positioned on the outer side in the radial direction from the outer peripheral surface of the outlet pipe 24 when the opening 50 a of the outlet pipe 24 is closed. Is protruding.

In the present embodiment, the interlock mechanism 60 is configured by the shaft 53 and the pressure receiving piece 54 of the lid 50 and the bearing 26 of the outlet pipe 24.
Next, the operation of this embodiment will be described.

  As shown in FIG. 5C, the opening 24 a of the outlet pipe 24 is closed by the lid 50 when the filter element 40 is removed from the outlet pipe 24.

  In this state, as shown in FIG. 5A, when the filter element 40 is accommodated in the case 20 and the filter element 40 is extrapolated to the outlet pipe 24, the pressure receiving piece 54 is moved to the case 20 by the tip of the filter element 40. It is pressed toward the bottom wall 22. As a result, the pressure receiving piece 54 is rotated about the shaft 53, and the lid 50 is rotated about the shaft 53. By opening the lid 50 in this manner, the opening 24a of the outlet pipe 24 is opened. For this reason, an increase in ventilation resistance when air passes through the opening 24a of the outlet pipe 24 is preferably suppressed.

  In this state, as shown in FIG. 5B, when the filter element 40 is removed from the outlet pipe 24, the tip of the filter element 40 is separated from the pressure receiving piece 54. As a result, the cover 50 is rotated about the shaft 53 in the direction opposite to the opening direction by its own weight. In this way, when the lid 50 is closed, the opening 24a of the outlet pipe 24 is closed as shown in FIG. For this reason, when the filter element 40 is replaced, foreign matter such as dust is preferably prevented from entering the engine through the opening 24a of the outlet pipe 24.

According to the cylindrical air cleaner according to the present embodiment described above, the following effects can be obtained.
(1) Inside the case 20, an outlet pipe 24 that protrudes from the bottom wall 22 of the case 20 and into which the filter element 40 is inserted, a lid 50 that can open and close the opening 24 a of the outlet pipe 24, and the outlet pipe 24. There is provided an interlocking mechanism 60 that interlocks the attaching / detaching operation of the filter element 40 with the lid 50 and the opening / closing operation of the opening 24 a by the lid 50. According to such a configuration, it is possible to suitably suppress foreign matters such as dust from entering through the opening of the outlet pipe when the filter element 40 is removed while appropriately suppressing an increase in ventilation resistance.

  (2) The lid 50 has a sheet 51 having air permeability. For this reason, even when the filter element 40 is attached to the outlet pipe 24 and the lid 50 is opened, the lid 50 itself is provided with a ventilation resistance due to the presence of the lid 50 in the flow path inside the case 20. It can suppress suitably.

  (3) A reinforcing portion 52 for reinforcing the lid 50 is provided on the outer periphery of the lid 50. According to such a configuration, since the lid 50 is reinforced by the reinforcing portion 52, the lid 50 can be prevented from being deformed along with the opening / closing operation. Therefore, it is possible to suitably suppress the occurrence of a closing failure of the outlet pipe 24.

  (4) The interlocking mechanism 60 protrudes from the shaft 53 provided on the lid 50, the bearing 26 provided at the edge of the opening 24 a of the outlet pipe 24 and rotatably supporting the shaft 53, and the shaft 53. A pressure receiving piece 54 is provided which is a part and is located radially outside the outer peripheral surface of the outlet pipe 24 in a state where the opening 50 a of the outlet pipe 24 is closed by the lid 50. According to such a configuration, the interlocking mechanism 60 can be realized with a simple configuration.

  (5) When a straight line that passes through the bearing 26 and is perpendicular to the axis C of the outlet pipe 24 is a virtual line V, the edge of the opening 24a of the outlet pipe 24 is at the center of the outlet pipe 24 in the direction in which the virtual line V extends. The closer the part is, the closer to the bottom wall 22 side of the case 20. Further, in the state where the lid 50 closes the opening 24 a of the outlet pipe 24, the lid 50 is curved so that the part away from the imaginary line V is located on the bottom wall 22 side of the case 20. According to such a configuration, the lid 50 can be easily opened and closed without interfering with the inner peripheral surface of the filter element 40.

Second Embodiment
Hereinafter, a second embodiment in which a cylindrical air cleaner is embodied will be described with reference to FIG.

In the present embodiment, the lid 150 is a butterfly valve body capable of opening and closing the opening 124 a of the outlet pipe 124.
As shown in FIG. 6, also in this embodiment, the filter element 140 and the outlet pipe 124 are cylindrical. The lid 150 has a disk shape, and is entirely formed of a hard synthetic resin material similar to the case 120.

  Bearings 126 and 127 are provided at the edge of the opening 124a of the outlet pipe 124, and a shaft 153 provided on the lid 150 is rotatably supported by the bearings 126 and 127.

A pinion gear 155 is formed at the upper end of the shaft 153.
A peripheral wall of the outlet pipe 124 around the upper end of the shaft 153 is cut out along the axis C of the outlet pipe 124. A rack gear 156 meshed with the pinion gear 155 is supported at the notched portion so as to be displaceable along the coaxial line C.

The rack gear 156 is integrally formed with a pressure receiving piece 154 that is positioned radially outward from the outer peripheral surface of the outlet pipe 124.
Further, a spring 157 for urging the pressure receiving piece 154 toward the opening of the case 120 is provided at the notched portion. Although not shown here, there is provided a restricting portion that holds the lid 150 in the closed position when the lid 150 is closed by the spring 157.

In the present embodiment, the interlock mechanism 160 is configured by the pinion gear 155, the rack gear 156, the pressure receiving piece 154, and the spring 157.
Next, the operation of this embodiment will be described.

  As shown in FIG. 6B, the opening 124 a of the outlet pipe 124 is closed by the lid 150 when the filter element 140 is removed from the outlet pipe 124.

  In this state, as shown in FIG. 6A, when the filter element 140 is extrapolated to the outlet pipe 124, the pressure receiving piece 154 is pressed toward the bottom wall 122 of the case 120 by the tip of the filter element 140. As a result, the rack gear 156 connected to the pressure receiving piece 154 is displaced toward the bottom wall 122, and the pinion gear 155 meshed with the rack gear 156 rotates, whereby the lid 150 is rotated about the shaft 153. . By opening the lid 150 in this way, the opening 124a of the outlet pipe 124 is opened. For this reason, increase in ventilation resistance when air passes through the opening 124a of the outlet pipe 124 is suitably suppressed.

  Further, in this state, as shown in FIG. 6B, when the filter element 140 is removed from the outlet pipe 124, the tip of the filter element 140 is separated from the pressure receiving piece 154. As a result, the pressure receiving piece 154 is displaced toward the opening of the outlet pipe 124 by the urging force of the spring 157, and the pinion gear 155 meshed with the rack gear 156 rotates, so that the lid 150 is moved about the shaft 153. Is rotated in the opposite direction. In this manner, the lid 150 is closed, whereby the opening 124a of the outlet pipe 124 is closed. For this reason, when the filter element 140 is replaced, foreign matters such as dust are preferably prevented from entering through the opening 124a of the outlet pipe 124.

According to the cylindrical air cleaner according to the present embodiment described above, the following effects can be obtained.
(6) The lid 150 is a butterfly valve body capable of opening and closing the opening 124 a of the outlet pipe 124. The interlocking mechanism 160 is connected to a pinion gear 155 formed on a shaft 153 provided on the lid 150, a rack gear 156 that meshes with the pinion gear 155 and can be displaced along the axis C of the outlet pipe 124, and is connected to the rack gear 156. A pressure receiving piece 154 positioned radially outward from the outer peripheral surface of the pipe 124, and a spring 157 that biases the pressure receiving piece 154 toward the opening of the case 120 are provided. According to such a configuration, it is possible to achieve an effect according to the effect (1) of the first embodiment.

<Modification>
In addition, the cylindrical air cleaner which concerns on this invention is not limited to the structure illustrated in the said embodiment, For example, it can also implement as the following forms which changed this suitably.

  -It can replace with 1st Embodiment and can also form a reinforcement part with the resin material which has sealing performance. In this case, since the edge portion of the opening 24a and the reinforcing portion are in close contact with each other in a state where the opening 24a of the outlet pipe 24 is closed by the lid, the space between them is suitably sealed.

  In the air cleaner 10 according to the first embodiment, depending on the posture when the air cleaner 10 is mounted, even if the filter element 40 is removed from the outlet pipe 24 and the tip of the filter element 40 is separated from the pressure receiving piece 54, Does not work properly, and the lid 50 may not be closed. In such a case, an urging member that urges the lid in a direction in which the lid is closed may be provided.

  In the first embodiment, the bearing 26 protrudes from the outer peripheral surface of the outlet pipe 24. However, a concave portion is formed on the outer peripheral surface of the outlet pipe, the bearing is provided in the concave portion, and the pressure receiving piece is accommodated. By doing so, the gap between the inner peripheral surface of the main element and the outer peripheral surface of the outlet pipe can be reduced.

  -It can replace with 1st Embodiment and can also form the whole lid | cover with the material which does not have air permeability.

  DESCRIPTION OF SYMBOLS 10 ... Air cleaner 20, 120 ... Case, 22, 122 ... Bottom wall, 24, 124 ... Outlet pipe, 24a, 124a ... Opening, 26, 126, 127 ... Bearing, 30 ... Cap, 40, 140 ... Filter element, 50 , 150 ... lid, 51 ... seat, 52 ... reinforcing part, 53, 153 ... shaft (valve shaft), 54, 154 ... pressure receiving piece, 60, 160 ... interlocking mechanism, 155 ... pinion gear, 156 ... rack gear, 157 ... spring , C ... axis, V ... virtual line.

Claims (5)

In an air cleaner comprising a cylindrical case with one side, a cylindrical filter element housed inside the case, and a cap capable of opening and closing the opening of the case,
Inside the case,
An outlet pipe that protrudes from the bottom wall of the case and into which the filter element is extrapolated;
A lid capable of opening and closing the opening of the outlet pipe;
An interlocking mechanism for interlocking the opening / closing operation of the opening by the lid with the attaching / detaching operation of the filter element to / from the outlet pipe,
Tubular air cleaner. The lid is made of a breathable material,
The cylindrical air cleaner according to claim 1. A reinforcing part for reinforcing the lid is provided on the outer periphery of the lid.
The cylindrical air cleaner according to claim 1 or 2. The interlocking mechanism
A shaft provided on the lid;
A bearing that is provided at an edge of the opening of the outlet pipe and rotatably supports the shaft;
A pressure receiving piece located on the radially outer side than the outer peripheral surface of the outlet pipe in a state where the lid is closed at the opening of the outlet pipe which is a portion protruding from the shaft;
With
The cylindrical air cleaner as described in any one of Claims 1-3. The filter element and outlet pipe have a cylindrical shape,
When a straight line perpendicular to the axis of the outlet pipe through the bearing is assumed to be an imaginary line,
The edge of the opening of the outlet pipe is located closer to the bottom wall side of the case as the part closer to the center of the outlet pipe in the extending direction of the imaginary line,
In the state where the lid closes the opening of the outlet pipe, the lid is located closer to the bottom wall side of the case as a part away from the virtual line,
The cylindrical air cleaner according to claim 4.