JPH09234321A - Filter member attaching apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the attachment and detachment of a filter member and to enhance sealability by utilizing the revolving action of the holding frame and closure member of a filter element when the filter member is attached to and detached from a case main body. SOLUTION: A filter element 11 having a packing material 11b provided to the peripheral edge of the rear surface thereof is fitted in a holding frame 12 having a semicircular protruding part 12e provided to the front of the lower part of the side plate 12b thereof, and a closure member 13 consisting of a lid plate 13a having a clip member 18 attached thereto and a leg plate 13b is connected to the holding frame 12 in a revolvable manner to form a filter member F. A front case 15A and a rear case 15B are mutually abutted to form a case main body 15 having an opening 16 provided to the upper surface thereof and one wall part 15A6 rising from the bottom wall end of the case main body is erected and the other wall part 15B6 thereof is inclined in an upwardly expanded state and the filter member F is inserted into the case main body 15 from the opening 16, and the lower ends of the protruding part 12e and the leg plate 13b are brought into contact with the erected wall part 15A6 and the holding frame 12 and the closure member 13 are successively revolved toward the rear case 15B to bring the packing material 11b into contact with the inner wall surface of the case main body 15 under pressure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter member mounting device for easily, reliably and replaceably mounting a filter element for treating intake air of an engine and the like on a case body.

[0002]

2. Description of the Related Art A type in which a filter case is arranged in the middle of an intake duct of an engine so that a filter element can be replaceably mounted in the case body even when the engine is in operation is disclosed in US Pat. 5,03
No. 0,264.

The outline thereof is shown in FIGS. 6 to 8. The filter member F is composed of a filter element 1, a receiving frame member 2 and a closing member 3, and the filter element 1 is pleated from a series of filter papers. The periphery is covered with an edge piece 1c such as paper, a packing material 1b is attached to the periphery of the back surface, the receiving frame member 2 is made of synthetic resin, and both front and rear sides are open. On the left side), a shelf 2a for receiving the filter element 1 is provided on the periphery, a vertical rail piece 2b and an elliptical protrusion 2c are provided on both side walls, and the closing member 3 is an upper lid plate 3a and both side leg plates 3b. The rear side edge 3b _{2 of the} leg plate 3b is upright, while the front side edge 3b ₁ is slanted so that the lower width is narrow and has a wedge shape, and a vertically elongated guide hole 3c is formed in the center. Are provided respectively.

On the other hand, the case body 5 connected to the outside air intake duct (not shown but located on the right side in FIG. 7) and the intake duct (located on the left side) is made of synthetic resin,
An opening 6 on the upper surface for freely inserting and removing the filter member F
And a flange 5a for contacting the packing material 1b of the filter member F is formed on the case body 5 so as to form one side of the opening 6 and surround the other three sides of the case body 5. On both sides of the main body 5, inclined rail pieces 7 for guiding the front side edge 3b ₁ of the leg plate 3b of the closing member 3 are provided so as to correspond to the openings 6.

Therefore, the filter element 1 is fitted into the receiving frame member 2 from the rear side, the closing member 3 is put on the receiving frame member 2 from above, and the rear side edges 3b ₂ of both leg plates 3b are attached to both sides of the receiving frame member 2. And the projection 2c of the receiving frame member 2 is fitted into the guide hole 3c of the leg plate 3b to form a filter member F, which is inserted from the opening 6 into the case body 5 and the front side of the leg plate 3b is inclined. The edge 3b ₁ is inserted along the inclined rail piece 7 of the case main body 5, and the leg plate 3b guided by the rail piece 7 is lowered to move the receiving frame member 2 and the filter element 1 backward (to the left in FIG. 7). As shown in FIG. 8, the packing material 1b is pressed against the inner surface of the flange 5a of the case body 5, and at the same time, the upper cover plate 3a of the closing member 3 is brought into contact with the opening 6 to clean the inside of the case body 5 with a dirty side. It is divided into the side.

[0006]

In the above-mentioned conventional apparatus,
Closed member 3 of the leg plate 3b front edge 3b ₁ and the case main body 5 of inclined abutment case body packing material 1b of the filter element peripheral wedge action by the relationship between the rail pieces 7 5
Since the flange 5a is brought into pressure contact with the inner surface of the flange 5a to seal the peripheral portion thereof, and the sliding movement of the leg plate 3b and the rail piece 7 is accompanied, the friction loss is not small between them. However, the sealing effect due to the pressing of the packing material 1b cannot be expected to the left, and if the leg plate 3b is pushed deeply along the rail piece 7 in order to strengthen this, a meshing phenomenon occurs and the leg plate 3b can be easily pulled out after that. On top of that, the packing material 1b must be pulled out while being pressed against the packing material 1b over its entire length, which requires a large force, making it difficult to perform the replacement work and the inspection work of the filter member F.

In view of this, the present invention utilizes the pivoting action of the receiving frame member and the closing member, rather than sliding between the inclined surfaces, to facilitate the assembly and removal of the filter member and at the same time improve the sealing performance. The task is to let them do it.

[0008]

According to the present invention, as a device for mounting a filter member, a filter element having a packing material attached to the periphery of the back surface of a block-shaped filter medium is opened on both front and rear sides. It has a packing material receiving flange around the rear side and is fitted to a holding frame that has a protruding part that extends forward at the bottom of both side plates, and clip members are attached to the rear side edges on both side plates of the holding frame. A cover plate, a pressing plate provided on the lower side of the cover plate, and a leg plate of a closing member composed of leg plates on both sides are pivotally and detachably coupled to form a filter member, and a front case having an inlet pipe and an outlet pipe are provided. The rear case is butt-joined to form a case body, the upper surface of the butt portion is provided with an opening through which the filter member can be inserted and tilted, and the width of the bottom wall of the butt portion is set to the width of the filter member. Niho Equal to each other, the wall of the front case standing upright from the bottom wall is erected while the wall of the rear case is inclined upward, and the filter member is inserted into the case body from the opening and closed with the holding frame. It is characterized in that the members are sequentially rotated rearward to bring the packing material into pressure contact with the inner wall surface of the case body.

[0009]

1 to 5 show an example of an apparatus according to the present invention. In FIG. 1, 11 is a filter element which is a main part of a filter member F, and includes a series of filter papers, non-woven fabrics and the like. Filter material 11a pleated into a wavy shape
Is covered with an edge piece 11c such as a paper material or a thin iron plate to form a block shape, and an elastic packing material 11b such as polyurethane rubber or nitrile butadiene rubber is provided on the periphery of the back side (left side in the figure) to be the clean side. 12 is a holding frame for the filter element 11, which is made of nylon, polypropylene or synthetic resin such as nylon, polypropylene mixed with talc or glass fiber,
The upper and lower wall plates 12a and 12c and the both side plates 12b are formed into a square frame shape in which both front and rear surfaces of the element 11 are large enough to insert the filter medium 11a, and a flange 12d that extends outwardly around the rear side. When the filter element 11 is inserted inside, the packing material 11 around the rear edge of the filter element 11 is provided.
b is abutted.

A semi-circular projection 12e is provided at the lower portion of the front side edge of the side plates 12b of the holding frame 12 so as to project forward (to the right in the figure), and a semi-circular shape is formed on the outer surface of the side plates 12b. A pin shaft 12f extending in the left-right direction is provided at a central position of the protruding portion 12e so as not to protrude from the peripheral flange 12d, and a plurality of element restraining protrusions 12g are formed on the inner surface of both side plates 12b. It is provided in the direction. However, if the gap between the side plates 12b is matched with the lateral width of the filter element 11 and they are fitted properly, the protrusion 12g may not be provided.

Reference numeral 13 denotes a closing member, which is made of the same synthetic resin as the holding frame 12 and has a cover plate 13a at the upper end, leg plates 13b on both sides, and a pressing plate provided under the latter half of the cover plate 13a with a slight interval. 13c, which is formed in a gate shape of a size that straddles the holding frame 12 from the left and right, and the lid plate 13a has a substantially horizontal rear half portion 13a ₁ and a front half portion 13 which is inclined downward and forward (to the right in the figure).
A ₂ forms a side face, and a handle 17 is provided at the center along the rear edge of the rear half 13a ₁ and attachments 19 for clip members 18 are provided on both sides.

The leg plates 13b on both sides are the side plates 12 of the holding frame 12.
The width of the pin shaft 12 on the side plate 12b of the holding frame 12 is narrower than that of b and is located below the rear half 13a ₁ from the boundary between the front half 13a ₂ and the rear half 13a ₁ of the cover plate.
When the through holes 13d to be fitted to the f are respectively provided, the through holes 13d are fitted to the pin shaft 12f, and the leg plates 13b are aligned in parallel with the side plates 12b, the leg plates 13 as shown in FIG.
The front side edge of b is tangent to the semicircular protrusion 12e of the side plate 12b, and the lower end is located above the lower wall 12c of the holding frame, and the pressing plate 13c is the leg plate 13b. It is wider but narrower than the latter half 13a ₁ of the cover plate 13a, and is located slightly above the upper wall 12a of the holding frame 12, and its rear end face (left end face) faces the upper flange 12c of the holding frame 12. There is.

FIG. 2 shows a case body 15, which is made of the same synthetic resin as the holding frame 12 and has an outside air inlet pipe 15A.
Front case 15A having ₃ and purified air outlet pipe 1
The rear case 15B having 5B ₃ is formed, and the front and rear cases 15A and 15B respectively have a high height inner case portion 15A ₁ 15B ₁ for accommodating the filter member F and a lower height raised case portion 15A. ₂ and 15B ₂ and both inner case portions 15A ₁ and 15B ₁ are open at the upper end in a U shape, and flanges 15A ₄ and 15B _{4 provided} on the left and right sides and the bottom portion are butted against each other, and friction welding is performed. , Which is joined by means such as adhesion, has an opening 16 formed at the upper end, which has a size such that the filter member F excluding the cover plate 13a can be freely taken in and out, and can be tilted, forming a U shape. Both inner case portions 15A surrounding the opening 16
The upper end surfaces 15A ₅ and 15B ₅ of ₁ and 15B ₁ are spread in a flange shape and are inclined so that the central portion is slightly higher.

As shown in FIG. 3, the inner width T of the bottom wall formed by abutting the front and rear inner case portions 15A ₁ and 15B ₁ with each other.
₁ , the width T ₂ of the filter member F when the filter element 11 is fitted in the holding frame 12 and the leg plate 13b of the closing member 13 is assembled to the side plate 12b of the holding frame 12 and these are aligned is made substantially equal to , Front back case part 15A ₁
The wall portion 15A ₆ rising from the bottom wall of is almost vertical,
The wall portion 15B ₆ of the rear inner case portion 15B ₁ is inclined upward and the clip members 18 of the closing member 13 which can be undulated at both side positions along the opening 16 of the upper wall of the rear rear case portion 15B _2. The hanging device 20 is provided so as to correspond to.

Therefore, the filter element 11 is fitted inside the holding frame 12 from the rear side, and the packing material 1 on the back surface is fitted.
1b is brought into contact with the flange 12d of the holding frame 12, and the leg plates 13b of the closing member 13 are opened slightly to the left and right to cover the holding frame 12 so as to straddle the left and right, and the through hole 13d is covered with the pin shaft 12f of the side plate 12b. And the both are pivotally and detachably coupled to form a filter member F. As shown in FIG. 3, the side plate 12b of the holding frame 12 and the leg plate 13b of the closing member 13 are aligned in an upright state, and the opening 16 is opened. To be inserted into the case body 15.

As it is inserted deeply, the leg plate 13b of the closing member 13 descends along the upright wall portion 15A ₆ of the front back case portion 15A ₁ and the packing material 1 for the filter element 11 is inserted.
The lower side portion of 1b is the inclined wall portion 15 of the rear inner case portion 15B _1.
When it comes into contact with the position near the bottom end of B ₆ and it becomes difficult to insert it, and at that time, by holding the upper flange 12d of the holding frame 12 and rotating the holding frame 12 rearward (leftward),
Rotates rearward with respect to closed member 13 while contacting with the semicircular protrusions 12e upright wall portion 15A ₆ of the side plate 12b as shown in FIG. 4, lower part of the packing material 11b is a bottom wall and inclined wall portion 15B It will be pressed to ₆ .

Next, when the closing member 13 is rotated rearward via the handle 19, the closing member 13 is centered on the contact point between the lower end of the leg plate 13b and the upright wall portion 15A ₆ of the front back case portion 15A _1. The pin shaft 12f that rotates and at that time moves the holding shaft 12 and the closing member 13 downward and rearward as shown in FIG. 5, and the lower side portion of the packing material 11b is the bottom wall and the inclined wall. When the clip member 18 is squeezed strongly by the portion 15B ₆ and the clip member 18 is hooked on the hanging member 20 on the back cover case portion 15A _{2 at} the upper side, the lid plate 13a causes the upper end surface 15A ₅ of the opening 16 of the case body 15, the tip of the contact plate 13c press closes it tightly to the 15B ₆ is abutted against the upper flange 12d of the holding frame 12, of the inner wall namely the case main body 15 of the upper portion of the packing material 11b front inner casing portion 15B ₁ Will be to compress strongly to the surface,
Along with this, the side portion of the packing material 11b is also pressed against the inner wall surface of the case body 15, and the filter member F secures the sealing property of the peripheral portion, so that the inside of the case body 15 becomes a front dirty side and a rear clean side. Partition.

Thus, when used, the outside air is exposed to the inlet pipe 15.
Incorporated from A ₃ in the front case 15A, dust enters into the rear case 15B is removed by traversing the filter elements 11, fed from the outlet pipe 15B ₃ to the intake pipe side.

When the filter element 11 is replaced, the clip member 18 is unlocked in the state shown in FIG. 5, and the closing member 13 is first rotated forward (rightward) to move the filter element 11 as shown in FIG.
As shown in FIG. 3, the holding frame 12 is rotated.
The packing material 11 is fitted into the closing member 13 as shown in FIG.
After releasing the pressure on the inner wall surface of the case body 15 of b, the filter member F is pulled up from the opening 16, the filter element 11 is removed from the holding frame 12, replaced with a new one, and again through the closing member 13, Thus, it is housed in the case body 15.

In the above example, the filter element is a filter material obtained by pleating a filter paper or a non-woven fabric. However, the filter element is not limited to this, and a packing material can be attached to the periphery of the back surface as a whole. It may be made of a porous material such as wool material, mesh material or metal, and synthetic resin, and the present invention can be used not only for treating intake air of an engine but also for purifying air in a vehicle compartment.

[0021]

The present invention is constructed as described above as a device for mounting a filter member of the type that uses a filter element having a block shape and a packing material attached to the peripheral edge of the back surface. Compared to the conventional one that uses the sliding of the inclined surface over the entire length of the leg plate, there are few parts that make surface contact with the main body, and it is easier to put in and take out the filter member, and the packing material for the filter element is held and closed. Since the pressing member is pressed against the inner wall surface of the case body by the pivoting action of the support member and the locking action of the clip member, the compression of the packing material is strengthened, and the sealing performance of the filter member can be improved. Since the member is pulled up after releasing the pressure contact state of the packing material to the case body,
It does not require a large force to pull it up, and it is easy to perform filter element replacement work and inspection work.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a filter member according to the present invention.

FIG. 2 is a perspective view of a case body.

FIG. 3 is an initial cross-sectional view of inserting the filter member into the case body.

FIG. 4 is a cross-sectional view when the filter member is deeply inserted into the case body.

FIG. 5 is a cross-sectional view showing a state where the filter member is attached to the case body.

FIG. 6 is an exploded perspective view of a conventional filter member.

FIG. 7 is a sectional view of a conventional filter member at the beginning of insertion.

FIG. 8 is a cross-sectional view of a conventional filter member in a mounted state.

[Explanation of symbols]

11 filter elements 11a filter material 11b packing material 12 holding frame 12b side plate 12d flange 12e projections 12f pin shaft 13 closed member 13a lid plate 13b leg plate 13c press contact plate 13d through hole 15 case body 15A front case 15A ₁ inner casing section 15A ₂ Draw case part 15A ₃ Inlet pipe 15B Rear case 15B ₁ Back case part 15B ₂ Draw case part 15B ₃ Outlet pipe 16 Opening 18 Clip member

Claims (1)

[Claims] 1. A filter element having a packing material attached to the periphery of the back surface of a block-shaped filter material, having front and rear both sides open and having a flange for the packing material on the periphery of the rear side, and extending forward on the lower part of both side plates. It is fitted with a holding frame equipped with a protruding part, and a lid plate with clip members attached to the rear edges on both side plates of the holding frame, a pressing plate provided underneath it, and a leg plate on both sides. The foot plate of the member is rotatably and detachably coupled to form a filter member, and the front case having the inlet pipe and the rear case having the outlet pipe are butt-coupled to form the case body, and the upper surface of the butt portion is formed. Is provided with an opening through which the filter member can be inserted and tilted, and the width of the bottom wall of the abutting portion is substantially equal to the width of the filter member, while the wall portion of the front case rising from the bottom wall is made upright. Rear side The wall of the base is inclined upwards,
A device for mounting a filter member, wherein the filter member is inserted into the case main body through the opening, and the holding frame and the closing member are sequentially rotated rearward to press the packing material against the inner wall surface of the case main body.