JPH0719131A - Air cleaner - Google Patents

Abstract

PURPOSE:To provide an air cleaner having a small number of part items and excellent in assembling work performance so as to be made lightweight as well as enabling the reduction of manufacturing cost by forming such structure as to hold an element in a case made of resin. CONSTITUTION:An air cleaner 1 is provided with a cylindrical element 6 for filtering air, and a resin case 2 having a bottom wall part 24 with an air lead-out port 25, and an air lead-out passage base end part 27 protruding from the outer peripheral surface (a) integrally with the bottom wall part 24 and having larger passage cross section than the air-lead out port 25. The air cleaner 1 also has a first member 3 and a second member 4. The first member 3 has a ring part 30 coming in contact with the air lead-out passage side face of the lead-out port peripheral edge part 24a of the resin case 2, and a cylindrical part 35 extended axially from the outer peripheral end of the ring part 30 so as to have the outer peripheral surface coming in contact with the inner peripheral surface of the air lead-out passage base end part 27. The second member 4 has a locking part 40 on one end side so as to press the ring part 30 of the first member 3 to the lead-out port peripheral edge part 24a, and an energizing part 41 on the other end side so as to press and energize the other end 65 of the element 6 hold the element 6 to the storage chamber side face of the lead-out port peripheral edge part 24a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air cleaner mounted on a vehicle such as an automobile for filtering and purifying air supplied to an engine.

[0002]

2. Description of the Related Art Conventionally, an air cleaner having a structure in which a cylindrical element is fixed in a housing chamber of a casing (case) main body by a center bolt method is known. For example, in (1) Japanese Utility Model Laid-Open No. 4-61614, a resin outlet pipe (air outlet passage) that is formed separately from the casing body and discharges air after being purified by an element.
There is disclosed a structure in which a bracket (element holding member) having a center bolt and a metal plate integrally formed with the casing body and having an opening are tightened with a plurality of bolts and nuts. (2) Japanese Patent Publication No. 61-38344 discloses a guide (element holding member) provided with a center bolt, which is provided on the side opposite to the mounting direction of the element from the outside of the case to remove air from the case after cleaning the air ( After being inserted into the air outlet), the outer periphery of the rubber connecting tube (air outlet passage) connected to the air outlet and the outer periphery of the air outlet are tightened by a clamp member arranged around the periphery. . (3) Japanese Utility Model Publication No. 61-10738 discloses a structure in which a guide (element holding member) equipped with a center bolt is fixed to the inside of an outlet side nozzle (air outlet) by welding. (4) Japanese Patent Application Laid-Open No. 59-7766 discloses a configuration in which a metal plate sleeve having a flange is embedded and integrated in a plastic filtered air pipe (air outlet).

[0003]

(1) In the case of the air cleaner disclosed in Japanese Utility Model Laid-Open No. 4-61614, the number of parts is increased and the number of parts is increased due to the structure of tightening with a plurality of bolts and nuts. The manufacturing cost cannot be reduced because the mounting operation for mounting the inside of the casing (case) body is complicated and the assembling workability is poor. (2) In the case of the air cleaner disclosed in Japanese Patent Publication No. 61-38344, before the element is mounted on the guide in the casing (case) body, the rubber connecting tube and the guide are attached to the air outlet outside the case. It requires a work of tightening and with a clamp member, and the work takes time. (3) In the case of the air cleaner disclosed in Japanese Utility Model Publication No. 61-10738, a guide (element holding member)
Since it is configured to be welded inside the outlet side nozzle (air outlet), the manufacturing cost cannot be reduced. (4) In the case of the air cleaner disclosed in Japanese Patent Application Laid-Open No. 59-7766, it is necessary to embed a metal plate sleeve at the time of manufacturing the filtered air pipe (air outlet). The manufacturing cost cannot be reduced in the same manner as.

It is an object of the present invention to provide an air cleaner having a small number of parts, excellent workability in assembling, reduction in manufacturing cost and weight saving, as a structure for holding an element in a resin case.

[0005]

An air cleaner according to the present invention defines an element and a storage chamber for storing the element, and allows the wall of the storage chamber to communicate the inside of the storage chamber with the inside of an air outlet. A resin case in which an air outlet is formed, an annular portion that abuts the peripheral edge of the air outlet, and an axially extending outer peripheral end of the annular portion, the outer peripheral surface of which is the base end of the air outlet passage. A first member having a tubular portion that comes into contact with the inner peripheral surface of the portion, and a locking portion integrally or separately formed with the annular portion at one end side urges the annular portion toward the other end, An air cleaner comprising: on the other end side, a second member having a biasing portion that engages with the other end of the element to bias the element toward one end.

As the first member and the second member, those formed of a metal material or those formed of a resin material having rigidity can be used. The first member and the second member are formed separately and are inserted into the air outlet passage base end portion of the resin case to be integrally assembled, or the annular portion and the second member of the first member are previously prepared. After being integrated with the locking part of the device by an adhesive or welding, it can be inserted and assembled in the base end part of the air outlet path.

[0007]

When assembling the air cleaner of the present invention, first, the first member and the second member are inserted from the base end portion of the air outlet passage of the resin case toward the air outlet and the accommodating chamber. Thereafter, the element is inserted from the other end side of the second member and accommodated in the accommodation chamber of the resin case. Next, the other end of the element is pressed and biased by the biasing portion of the second member.

As a result, the element is clamped, fixed, and held along the axial direction between the side surface of the storage chamber at the peripheral portion of the outlet of the resin case and the urging portion of the second member. Further, as the other end of the element is pressed and urged by the urging portion of the second member, the annular portion of the first member is urged by the locking portion of the second member so that the air around the outlet port peripheral portion of the resin case is It is pressed against and comes into contact with the side surface of the outlet path to reinforce the peripheral portion of the outlet port. The tubular portion of the first member abuts on the inner peripheral surface of the base end portion of the air outlet passage of the resin case to reinforce the base end portion of the air outlet passage.

[0009]

1 to 3 show an air cleaner according to an embodiment of the present invention.
It will be described based on. The air cleaner 1 of the embodiment is shown in FIG.
As shown in, a resin case 2, a first member 3,
It is composed of a second member 4, a seal member 5, and a cylindrical element 6. The resin case 2 is composed of a bottomed cylindrical body 21 that defines a housing chamber 20 that houses the element 6 and a lid member 29.

The bottomed tubular body 21 comprises a tubular peripheral wall portion 23 and a bottom wall portion 24 formed on the other end side of the tubular peripheral wall portion 23. The cylindrical peripheral wall portion 23 has an opening 28 for taking in and out the element 6 at one end side and an air introduction port 22 for introducing air in a P2 direction orthogonal to the axial center P1 direction.
Are formed.

The bottom wall portion 24 has an element 6 at the center thereof.
The air outlet 25 opened to lead out the air purified by the air outlet 25 and the air outlet 25 from the outer peripheral surface a of the bottom wall 24.
And an inner diameter R of the passage cross section that is wider than the inner diameter R1 of the air outlet 25 (see FIG. 2) and that projects coaxially with the axis P1.
An air lead-out path base end portion 27 is formed to partition a part of the air lead-out path 26 having two. Further, in the bottom wall portion 24, a portion radially inward of the connecting portion b between the air outlet passage base end portion 27 and the bottom wall portion 24 projects in the radial direction and the air outlet port 25.
It becomes the ring-shaped lead-out port peripheral portion 24a which forms the.

As shown in FIG. 1, the opening 28 is used to insert and remove the element 6 into and from the accommodation chamber 20 of the bottomed tubular body 21, and is detachably attached to the cylindrical peripheral wall portion 23. The lid member 29 is configured to be closed. Therefore, the cylindrical peripheral wall portion 23 forming the opening 28 is formed.
A locking portion 28a for locking the lid member 29
And a locking tool 28c, one end of which is pivotally supported by the support shaft 28b and the other end of which is swingable.

The lid member 29 has an engaging portion 29a which engages with the engaging portion 28a, and a hooking portion 29b with which the engaging member 28c is detachably engaged. The first member 3 is formed by processing a metal plate and includes an annular portion 30 and a tubular portion 35. The annular portion 30 is formed on the bottom wall portion 24 of the bottomed tubular body 21 and has an air outlet passage side surface 24b of an outlet opening peripheral portion 24a.
This is the part that is seated on and abuts.

The tubular portion 35 has an outer peripheral surface 36 which integrally extends from the outer peripheral end of the annular portion 30 in the direction of the axis P and contacts the inner peripheral surface 27b of the air outlet passage base end portion 27. The second member 4 is
It is composed of a locking portion 40 and a biasing portion 41. The locking portion 40 contacts the annular portion 30 of the first member 3 and presses the annular portion 30 against the air outlet passage side surface 24b of the outlet opening peripheral portion 24a.

The urging portion 41 comprises a center bolt 42 on the other end side formed integrally with the engaging portion 40, and a nut 44 screwed to a male screw portion 43 at the tip of the center bolt 42. As the seal member 5, a ring-shaped gasket having a groove having a substantially V-shaped cross section is used.

The element 6 includes a cylindrical filter medium 60 having a central hole, an inner peripheral side cylindrical reinforcing plate 62 having a large number of holes 61 on the inner peripheral side thereof, and one end and the other end in the axial center P1 direction. It is composed of a ring-shaped first end reinforcing plate 63 formed at the end and a second end reinforcing plate 65 having a hole 64 through which the center bolt 42 is inserted in the center. As shown in FIG. 1, the element 6 is arranged in the storage chamber 20 between the air inlet 22 and the air outlet 25 of the resin case 2, and the air before purification introduced through the air inlet 22 is supplied. Purified air that has passed through the filter medium 60 from the outer peripheral side to the inner peripheral side and is filtered passes through the multiple holes 61 of the inner peripheral side tubular reinforcing plate 62 from the center hole to the air outlet port 25.
Is to be derived.

Next, an assembling procedure of the air cleaner 1 of the embodiment will be described. When assembling the air cleaner 1 of this embodiment,
First, as shown in FIG. 2, from the air lead-out path 26 side of the air lead-out path base end portion 27 of the resin case 2 to the lead-out edge portion 2
The first member 3 and the second member 4 are inserted toward the air outlet 25 and the accommodation chamber 20 of 4a.

Then, the annular portion 30 of the first member 3 is
As shown in the figure, together with the locking portion 40 of the second member 4,
The outer peripheral surface 36 of the tubular portion 35 of the first member 3 is brought into contact with the air outlet passage side surface 24b of the outlet peripheral portion 24a of the resin case 2.
Is the inner peripheral surface 2 of the air discharge path base end portion 27 of the resin case 2.
Contact 7b. The locking portion 40 of the second member 4 contacts the annular portion 30 of the first member 3.

Thereafter, the cylindrical element 6 is inserted into the accommodation chamber 20 of the resin case 2 from the tip side of the center bolt 42 of the second member 4 and accommodated therein, and the first end portion of the element 6 is reinforced. The sealing material 5 is interposed between the plate 63 and the storage chamber side surface 24c of the outlet peripheral portion 24a. Then, the tightening nut 44 is screwed onto the male screw portion 43 of the center bolt 42 protruding from the through hole 64 of the second end reinforcing plate 65 of the element 6 and tightened.

As a result, the element 6 has the accommodation chamber side surface 24c of the lead-out port peripheral portion 24a and the nut 4 of the second member 4.
It is sandwiched between 4 and. After this, the bottomed tubular body 21
The engaging portion 28a of the lid member 29 is engaged with the engaging portion 28a of the lid member 29, and the engaging portion 28c of the case body 21 is engaged with the hooking portion 29b of the lid member 29. It can be attached to the main body 21 and the opening 28 of the cylindrical peripheral wall portion 23 is closed.

Further, the air cleaner 1 is provided with an unillustrated hose for drawing out an air and a clamp member for fixing the hose on the outer peripheral surface 27a of the base end portion 27 of the air outflow path for use. Thus, the air cleaner 1 of the embodiment is
The housing chamber 20 of the resin case 2 can be easily assembled.
Inside the outlet port peripheral portion 24a and the urging portion 41 of the second member 4.
Since the element 6 can be fixed and held between and, the assembly work of the air cleaner 1 does not require the work of tightening with a plurality of bolts and nuts or a clamp member as in the conventional case, and the number of parts can be reduced. The workability of assembling is excellent, the working time is not required, and the manufacturing cost can be reduced and the weight can be reduced.

Further, according to the air cleaner 1 of the embodiment, the element 6 is disposed between the first end reinforcing plate 63 of the element 6 and the side surface 24c of the storage chamber of the peripheral portion 24a of the outlet port, and the seal member 5 is interposed between the element 6 and Male screw part 4 of center bolt 42 of two member 4
When tightened by the nut 44 screwed to 3, the pulling force along the axis P1 direction acts on the locking portion 40 of the second member 4 via the center bolt 42.

However, the annular portion 30 of the first member 3 having rigidity is interposed between the engaging portion 40 of the second member 4 and the air outlet passage side surface 24b of the outlet opening peripheral portion 24a. Therefore, the air outlet passage side surface 24b is reinforced, and the tensile force can be received by the annular portion 30 having the rigidity. Therefore, it is possible to prevent the resin-made outlet port peripheral portion 24a from sagging.

Further, since the air outlet passage base end portion 27 of the resin case 2 is reinforced by the tubular portion 35 of the first member 3 which abuts on the inner peripheral surface 27b side thereof, the outer periphery of the air outlet passage base end portion 27. When the unillustrated air lead-out pipe inserted in the surface 27a is tightened with a clamp member or the like, the air lead-out passage base end portion 27
Can be prevented from deformation.

[0025]

In the air cleaner of the present invention, the first member and the second member are inserted into the base end portion of the air outlet passage of the resin case at the time of assembling, and the resin case is inserted from the other end side of the second member. With respect to the element housed in the housing chamber, the other end can be fixed and held between the leading edge portion of the resin case and the urging portion only by pressing and urging the other end by the urging portion of the second member. .

Therefore, the air cleaner of the present invention does not require a plurality of bolts and nuts in addition to the center bolt as in the conventional case when assembling, fixing and holding the element in the resin case, and the number of parts is small. It can be reduced in number, excellent in workability in assembling, working time can be reduced, and manufacturing cost and weight can be reduced. Further, when the other end of the second member is pressed and urged by the urging part on the other end side to be sandwiched between the second case and the peripheral portion of the outlet of the resin case, the engaging part on the one end side of the second member Since the annular portion of the first member is interposed between the air outlet passage side surface of the peripheral portion of the outlet opening, the side surface of the air outlet passage is reinforced, and the acting force by the pressing bias is increased by the rigidity. It can be received by the provided annular part. Therefore, it is possible to prevent the peripheral portion of the resin outlet from sagging.

Further, since the base end portion of the air outlet passage of the resin case is reinforced by the tubular portion of the first member that abuts on the inner peripheral side thereof, the air outlet pipe inserted into the outer peripheral surface of the base end portion of the air outlet passage. When tightened with a clamp member or the like, it is possible to prevent deformation of the base end portion of the air outlet passage.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an entire air cleaner of an embodiment.

FIG. 2 is a partial cross-sectional view showing an assembled state of a main part of the air cleaner of the embodiment.

FIG. 3 is an enlarged partial cross-sectional view showing an enlarged main part of the air cleaner in FIG.

[Explanation of symbols]

1 ... Air cleaner 2 ... Resin case
20 ... Storage room 21 ... Bottomed cylindrical body 23 ... Cylindrical peripheral wall part
24 ... Bottom wall part 24a ... Outflow port peripheral part 25 ... Air outflow port 24b ... Air outflow path side face 24c ... Storage chamber side face 27 ... Air outflow path base end part 28 ... Opening part 3 ... First member 30 ... Annular part 35 ...
Cylindrical part 4 ... Second member 40 ... Locking part
41 ... Energizing part 5 ... Seal member (gasket)
6 ... Element

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiaki Nakayama 1-1-1, Toyota-cho, Kariya city, Aichi Prefecture Toyota Boshoku Co., Ltd.

Claims (1)

[Claims] 1. A resin case in which an element and an accommodation chamber for accommodating the element are defined, and an air outlet port is formed on a wall surface of the accommodation chamber for communicating the inside of the accommodation chamber with the inside of an air outlet passage. An annular portion that comes into contact with the peripheral edge of the air outlet, and a tubular portion that extends axially from the outer peripheral end of the annular portion, the outer peripheral surface of which comes into contact with the inner peripheral surface of the base end portion of the air outlet passage. And a locking member formed integrally with or separately from the annular portion at one end side urges the annular portion toward the other end, and at the other end side, the other end of the element An air cleaner comprising: a second member having a biasing portion that engages with the element to bias the element toward one end.