JP2566772B2 - ▲ Ro ▼ Excessive element - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an excess element such as an air cleaner for an internal combustion engine.

(Prior Art) An excess element mounted on an air cleaner for an internal combustion engine is one in which an excess body is held by a support body and packing is attached at a required position. The packing material often serves as a fixing material for fixing the overbody and the support.

Due to recent demands for downsizing of the shape of the air cleaner, it has a frusto-conical shape so that a free air passage can be formed in the air cleaner casing, and air flows through the side surface as well as the upper and lower end surfaces, that is, the inner and outer end surfaces. It is proposed to let overbody. For example, Japanese Patent Application No. Sho 60-21 filed by the applicant
8836 is that. Since such an excess body allows air to flow to the upper and lower end surfaces together with the side surface forming a conical surface that is folded, it cannot be supported by closing the end surface with a conventional end plate, and the conical inclined surface cannot be supported. The excess body must be fixed so that air can flow through the support having the above. A seal packing is attached to the lower end surface of the excess body outer peripheral side, and this serves as a member for fixing the excess body to the support body at the same time. A seal packing is attached to the upper end of the inner peripheral side of the excess body. These packings are usually formed by injecting a foaming urethane or the like into a molding die installed at the location to foam and solidify.

(Problems to be Solved by the Invention) In manufacturing the over-element as described above, when the over-body is placed on the upper surface of the support body forming the conical surface, the radial fold pitch interval of the over-body is extended and Since it will slide down the inclined surface, a temporary fixing jig must be used until it is fixed with a fixing material, that is, packing. Since the jig has to be removable so as not to interfere with the mold for packing and the molding work, it tends to be complicated, and the manufacturing work also takes time. Further, since the excess body is fixed to the support body only after the fixing, the excess body body may be peeled off from the support body to cause leakage when pressure is applied to the excess body body. Also, this packing is integrally molded at the lower part of the outer peripheral side end surface of the excess element also as a sealing member for partitioning the dust side and the clean side. Easy to peel off packing.

Furthermore, a packing for partitioning the dust side and the clean side is required at the upper part of the inner peripheral side end surface of the excess body, but the conical surface of the support and the packing are separated by the end surface width on the peripheral side of the excess body and its inclination. Since this part is a part that becomes the inner clean side passage of the excess element, if the packing is extended and fixed to the conical surface of the support to stabilize it, the clean side passage will be blocked. The packing is extremely unstable because it is supported only by the upper end of the body and is easily detached.

(Means for Solving the Problem) The present invention provides an over-element in which the support is improved so as to solve the above-mentioned problems and to completely hold and fix the over-body and the packing, and has the following configuration. Is.

That is, an overbody and an overbody that are radially pleated, have a thickness of only the pleated fold, form a truncated cone, and have a large-diameter outer peripheral side end surface and a small-diameter inner peripheral side end surface above and inside. Is a super-element having a support body that abuts the lower surface of the support body, wherein the support body connects a plurality of radial columns that incline downward along the frustoconical surface of the lower surface of the body and the lower end of each column to the upper surface. A lower support wheel having a plurality of arcuate protrusions,
It has an upper support wheel that connects the upper ends of the columns and a plurality of standing columns that rise from the upper support wheel in the vicinity of the inner peripheral side end surface of the overbody and bend the upper ends, and the lower end surface of the outer peripheral side surface of the overbody Is in contact with the raised base of the lower support ring, and further has an annular upper packing that extends over the upper end of the hyperbody peripheral side end and the upper part of the standing column, and an annular upper packing that extends over the lower end of the hyperbody outer peripheral side end face and the upper and lower surfaces of the lower support ring. It is an excess element to which the lower packing is attached.

(Operation) The excess element of the present invention is attached so as to cover the air outlet provided on the bottom surface of the casing of the air cleaner in a cap shape, and the lower packing is brought into contact with the bottom surface of the casing. The excess element provided with an upper lid for closing the inside of the upper packing is used in the above-mentioned mounted state, and the upper packing is further brought into contact with the casing ceiling.

The air that has entered from the outer side surface and the outer peripheral side end surface of the excessive element is passed by the excessive body and leaves the excessive side body at the inner side surface and the inner peripheral side end surface and passes between the slanted columns of the support or between the standing columns and It enters inside and is discharged from the air outlet of the casing.

In the above-mentioned excess element, the excess body is placed on the conical surface formed by the support columns, but the lower end portion of the outer peripheral side end surface thereof is projected from the support ring and is supported by being supported by a plurality of arcuate protrusions. Therefore, even if the fixing force of the packing is sufficiently strong, the material will not expand and fall due to expansion of the fold-folding pitch gap due to intake air pressure or vibration. In addition, a troublesome temporary fixing jig is not required even during manufacturing, and the work is simple. Since the plurality of protrusions are discontinuous on the circumference, the lower end of the excess body can be supported uniformly. Further, since the lower packing is formed integrally over the upper and lower surfaces of the lower support wheel, it is possible to obtain a packing having a good sealing property between the lower support wheel and the overbody and between the lower support wheel and the casing without peeling.

Also, the upper packing is mounted on the upper end surface on the peripheral side of the body, but the upper packing is erected upward from the upper support ring of the support body and the upper end is bent, so the upper packing straddles this bent portion. By being molded, it is completely fixed to the support and has a stable shape, so that it does not fall off or have poor sealing.

(Embodiment) An embodiment of the present invention is shown in a sectional view of FIG. The over-element 14 comprises an over-16 support 110 lower packing 64 and upper packing 66.

The excess body 16 is frustoconical with a paper having radial folds, and the inner peripheral end surface 26b is closed at the valley portion and the inner surface of the mountain portion is open inward, and the outer peripheral end surface 26a is conversely of the mountain portion. The inner surface is closed and the valley is open outward. Dust-containing air enters from the valleys of the fold side surface 16a and the outer peripheral side end surface 26a.
It goes out to the inner surface of the mountain portion of 16a and the inner peripheral side end surface 26b.

As shown in FIG. 2 and FIG. 3, the support 110 is a combination of a plurality of pillars 114 and a circular pillar 112, which are inclined downward from the inside to the outside, and the upper surface thereof forms a truncated cone surface. The slope matches the slope of the lower surface of the body 16. The overbody 16 is placed on the columns 112 and 114.
No. 4 does not occlude the folds of the overbody and is inclined to the radiation so as to support many folds. The columns 114 and 112 may have a rectangular cross section, but may also have a circular cross section in order to reduce the flow resistance of air. Lower support wheel 1 by connecting the lower ends of columns 114
16 is provided and a plurality of protrusions 118a and 118b are provided on the upper surface thereof. The protrusion 118b is provided at the intersection of the column 114 and the lower support ring 116, and the protrusion 118a is provided at the other portion.
The lower part of the outer peripheral side end surface 26a of the excess body 16 is brought into contact with and locked by the protrusions 118a and 118b.

The lower packing 64 is made of urethane foam and is formed by
It is mounted over the lower part of the end face 26a on the outer peripheral side of the excess body locked to 118a, 118b and the upper and lower surfaces of the lower support wheel 116.
To mold this, a required mold is installed at a predetermined position and a high-viscosity urethane fluid is injected to foam and solidify. However, since the fluidity is poor, the protrusions 118a and 118b are lower support wheels.
The urethane fluid is sufficiently squeezed from the upper surface to the lower surface by a portion which is intermittently provided along 116 and has no protrusion. Further, the lower support wheel 116 is provided with a long hole 120a and a round hole 112b, and the urethane fluid is molded integrally with the upper and lower surfaces. As a result, the molding is facilitated, and the molded and solidified lower packing 64 is integrated over the upper and lower surfaces of the lower support wheel 116 to improve the close contact with the support body and prevent peeling or defective sealing.

The upper support ring 120 of the support 110 connects the upper ends of the columns 114 and cooperates with the lower support ring 116 to contribute to maintaining the shape of the conical surface. A plurality of upright columns 122 are erected upward from the support wheel 120, and the height of the upright columns 122 almost reaches the upper end of the inner peripheral side end surface 26b of the excess body 16, and the upper end thereof is bent outwardly.
It is 2a.

The upper packing 66 seals the upper end of the inner peripheral side end surface 26b of the excess body to separate the dust side and the clean side of the excess body, but like the lower packing 64, a mold is installed at the relevant location and urethane is used. It is formed by injecting a fluid to foam and solidify. If it is supported only by the upper part of the end face on the inner peripheral side of the overbody, it is extremely unstable and easily falls off.
Since the upper column 66 has a bent portion 122a at the upper end of the upright column 122 and the upper packing 66 grips this, the fixing is complete and no dropout or seal leakage occurs.

The upper lid portion 124 of the support 110 shown in FIGS. 2 and 3 is a standing column.
122 is for connecting the upper ends and closing the circular space surrounded by them, and if the upper lid part 124 is provided, the upper packing 66 does not have to abut against the casing ceiling part to partition the inside of the casing, and The excess element 14 may be fixed to the casing by covering the air outlet with a shade. Reference numeral 124a in the drawing denotes a bolt hole for fixing the bolt.

4 and 5 show an example in which this excess element is attached to the air cleaner. Air cleaner 10 casing 12
Is a flat rectangular box. The casing 12 has a body 68 'having an air outlet 68'a on the bottom and a suction pipe cover 7
It is formed by combining the peripheral edges of the cover 78 'having 8'a. Suction pipe mounting hole 12 provided on the side wall of the casing 12
A base portion of a suction pipe 80 ', which is composed of an upper piece 80'a and a lower piece 80'b, is fitted and fixed to the peripheral edge of 8. A vacuum motor 130 is provided on the upper piece 80'a, and a warm air intake branch pipe 1 is provided on the lower piece 80'b.
34 is integrally molded. Vacuum motor 130
A plate-shaped valve 132 is connected to the. The upper portion of the suction pipe 80 'is covered with a suction pipe cover 78'a and is suspended and fixed to this.

The excess element 14 is mounted so that the lower packing 64 is in contact with the bottom surface of the body so as to cover the air outlet 68'a, and is tightened to the retainer 136 by the center bolt 138. Even in the flat air cleaner having the above-mentioned shape, the air passage of the overelement of the present invention is set without difficulty, and the support securely holds the overbody and the packing so that the sealing performance is not impaired.

(Effect) Since the over-element of the present invention supports the over-body by the protrusion of the upper surface of the support ring at the lower end of the slanted column, the position of the over-body is stable, no jig is required during manufacturing, and the process is simplified. In addition, it is supported by the protrusion during use, and there is no excessive force applied between the lower packing and the overbody. In addition, since the front ridges are provided intermittently on the circumference, when molding the lower packing, the packing material easily goes around the upper and lower surfaces of the lower support wheel and becomes an integral body that wraps the lower support wheel, firmly fixing it. The peeling does not occur. The upper packing is provided with a standing column, and is held by straddling the upper end of the upper column and the upper end surface on the circumferential side of the body and is gripped by the bent portion of the standing column, so that the upper packing is stably fixed between the body and the support. .

As described above, the excess element is tightly held between the excess body, the support body, and the upper and lower packings alternately, and the seal leakage due to deformation or peeling does not occur and the manufacturing is easy.

[Brief description of drawings]

1 is a sectional view of an excess element of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a sectional view of a support. FIG. 4 is a plan view of an air cleaner equipped with the excess element of the present invention, and FIG. 5 is a sectional view thereof. 14 …… Excessive element, 16 …… Excessive body 64 …… Lower packing, 66 …… Upper packing 110 …… Supporting body, 112,114 …… Posts 118a, 118b …… Protruding, 122 …… Standing pillar

Claims (1)

(57) [Claims] Claim: What is claimed is: 1. A radial pleated fold, a frustoconical shape having a thickness corresponding to the fold width, and a large-diameter outer peripheral end face and a small-diameter inner peripheral end face at the inner upper part thereof. An over-element comprising a support body that abuts against the lower surface of the body and the overbody, wherein the support body comprises a plurality of radial columns that incline downward along the frustoconical surface of the underside of the body and the lower ends of each column. And a lower support wheel having a plurality of arcuate protrusions on the upper surface,
It has an upper support wheel that connects the upper ends of the columns and a plurality of standing columns that rise from the upper support wheel in the vicinity of the inner peripheral side end surface of the overbody and have the upper ends bent, and the lower part of the outer peripheral side end surface of the overbody. Is in contact with the raised base of the lower support ring, and further has an annular upper packing that extends over the upper end of the hyperbody peripheral side end and the upper part of the standing column, and an annular upper packing that extends over the lower end of the hyperbody outer peripheral side end face and the upper and lower surfaces of the lower support ring. Excessive element with lower packing attached.