JPH01236949A - Honeycomb-like multichannel member - Google Patents

Abstract

PURPOSE:To prevent the middle as a center from projecting to an axial direction while passage resistance is minimized by forming a plurality of stop protrusions which alternately stand upright in a front and a rear direction on both side edges in a width direction of flat plate and stopping overlapped corrugated plates using the stop protrusion. CONSTITUTION:Belt-like flat plate 4 and corrugated plate 5 are overlapped and tightened into a column-like form to form a honeycomb-like multichannel member 2 consisting of a plurality of honeycomb passages 6 in an axial direction. Then a plurality of stop protrusions 7 (inner direction protrusion 7a, outer direction protrusion 7b) which alternately stand upright to a front and a rear direction are formed on both side edges in a width direction of the flat plate 4 coinciding with the axial direction of the multichannel member 2. Consequently, the middle as a center is prevented from projecting in an axial direction, while an increase in the passage resistance is minimized, and productivity can be improved by decreasing assembly manhours.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is mainly built into a catalytic converter or a muffler of an engine, and has a contact area between the gas passing through the converter and the gas passing through the inside of the engine. The present invention relates to a honeycomb-shaped multi-channel member formed by overlapping a band-shaped flat plate and a corrugated plate and winding them into a cylindrical shape.

(Prior Art) By the way, when high-pressure gas passes through this type of honeycomb-shaped multi-channel member from one side, the pressure causes it to spirally fly out in the passing direction, that is, on the downstream side in the axial direction, centering on its center. This may cause problems such as deformation. Therefore, as a countermeasure for conventional honeycomb-shaped multi-channel members, the flat plate and the corrugated plate are brazed at their contact areas, or a stopper member is installed at the downstream end of the multi-channel member in the radial direction. (Special Publication No. 5B-50092).

(Problems to be Solved by the Invention) In the former method using brazing, complicated brazing operations are required in the assembly process, making it expensive. In addition, in the latter type of stopper, since the stopper member is passed radially to the downstream end of the stopper, the stopper member faces into the passage so as to partially block it, increasing passage resistance. Furthermore, the stopper member needs to be lava-laid into the multi-channel member during the second step of assembling the multi-channel member, which increases the number of assembly steps.

The present invention prevents the above-mentioned protrusion while minimizing passage resistance by forming a locking protrusion or a locking groove as a member of a stopper on a flat plate or a corrugated plate constituting a honeycomb-shaped multi-channel member. Another object of the present invention is to provide a Unicam multi-channel member that reduces assembly man-hours and improves productivity.

(Means for Solving the Problems) In order to achieve the above object, the present invention overlaps a band-shaped flat plate and a corrugated plate and wraps them into a cylindrical shape to form a plurality of honeycomb-shaped passages in the axial direction. A two-cam-shaped multi-channel member, characterized in that a large number of locking protrusions that stand up alternately in the front and back directions are formed on both edges in the width direction of the flat plate that coincide with the axial direction of the multi-channel member, Alternatively, a large number of locking protrusions that stand up alternately in the front and back directions, respectively, in the middle in the width direction of the flat plate and the corrugated plate that match in the axial direction of the multi-channel member, and locking protrusions that correspond to the locking protrusions. It is characterized by forming a groove.

(Function) When axial pressure is applied to the honeycomb-shaped multi-channel member from the upstream side, according to the structure of claim 1, the corrugated plate at the center of the member is compressed by the flat plate wound on the outside of the corrugated plate. The flat plate is locked at the downstream end by a locking protrusion that stands up toward the inside, and the flat plate is caught at the upstream end by the locking projection that stands up toward the outside of the flat plate. It is locked.

This state continues in a spiral manner up to the outermost periphery, which is the fixed part, and the whole is locked together to overcome the pressure in the axial direction.

On the other hand, according to the structure of claim 2, the corrugated plate in the center part is
The locking protrusion and the locking groove that stand up toward the inside of the flat plate are engaged with each other between the flat plate wound on the outside, and the flat plate is locked on the flat plate. The whole body is locked into one piece by being locked to the corrugated plate.

Further, since the locking projections sufficiently exhibit their function by being caught on the corresponding corrugated plate, there is no need to form them so thick that they protrude into the passage.

Furthermore, the multi-channel member can be easily assembled by simply stacking a flat plate and a corrugated plate and winding them together.

(Example) A case where the present invention is implemented in a silencer for a motorcycle will be described.

Referring to FIG. 1, 1 is a muffler main body, 2 is a honeycomb-shaped multi-channel member housed in a cylindrical body 3 fixed to partition walls 3a and 3b in the muffler main body 1, and the multi-channel member 2 has a catalyst attached therein, which muffles the exhaust gas passing through the channel member 2 from the inlet 1a to the outlet 1b of the muffler body 1, and causes the exhaust gas to react with the catalyst. Purify this.

The honeycomb-like multi-channel member 2 is shown in FIGS. 2(A) and 2(B).
As shown in FIG. 3, a strip-shaped flat plate 4 and a strip-shaped corrugated plate 5 are overlapped, and as shown in FIG. 6 and coated with a catalyst such as platinum palladium on both sides,
The catalyst facing the passage 6 is brought into contact with the exhaust gas passing through the passage 6.

The flat plate 4 is slightly wider than the corrugated plate 5 as shown in FIG. A plurality of locking protrusions 7 are formed for locking.

The locking protrusion 7 is made to protrude to the same extent as the thickness of the corrugated plate 5, and cuts corresponding to the wave pitch of the corrugated plate 5 are made at both ends of the flat plate 4 in the width direction. In addition, and in accordance with the waveform of the corrugated plate 5, both ends of the board 4 in the width direction are made to stand up alternately in the front direction and the back direction, and an inward protrusion 7a in the front direction and an outward protrusion 7b in the back direction. I try to form a large number of them. Then, as shown in FIG. 4, when the flat plate 4 and the corrugated plate 5 are superimposed and wound tightly in a spiral shape, J
a and the outward protrusion 7b at both ends in the axis direction j,
The entire spirally formed body is locked together.

Next, modifications of this embodiment are shown in FIGS. 4(A) and 5(B) and FIG. 5.

In this modification, the locking protrusions 8 of the flat plate 4 are made by making a plurality of notches in the longitudinal direction of the flat plate 4 and standing up in a bridge-like chevron shape in both the front and back directions by press working, as shown in FIG. 4(B). A large number of inward protrusions 8a and outward protrusions 8b are formed, respectively, and the corrugated plate 5 is secured to these.

Furthermore, another modification of this embodiment is shown in FIG.

In this modification, the locking protrusions of the flat plate 4 are made by making a plurality of notches in the longitudinal direction of the flat plate 4 and are made to stand up in a dome shape in the front and back directions by press working, thereby forming a large number of inward protrusions 8a and outward protrusions 8b, respectively. The corrugated plate 5 is fixed to this.

According to the configuration described above, when pressure of exhaust gas is applied to the honeycomb-shaped multi-channel member 2 from one side in the axial direction, the corrugated plate 5 at the center of the corrugated plate 5 is turned to the inward protrusion 7a of the flat plate 4 wound on the outside. The flat plate 4 itself is caught on the outer wound corrugated sheet 5 by its outward protrusion 7b and is locked on the corrugated sheet 5 at the upstream end. 5
is locked at the downstream end by the inward protrusion 7a of the flat plate 4 wound on the outside. In this way, the flat plate 4 and the corrugated plate 5 are fixed to the casing 1 at the outermost ends of the spiral shape, and are fixed integrally as a whole.

In addition, since the flat plate 4 and the corrugated plate 5 are superimposed and wound together, the locking protrusion 7 is formed to a degree that the corrugated plate 5 is caught, that is, the corrugated plate
It protrudes only by about the thickness of the plate, and does not increase the resistance of the passage 6. Further, according to the modification, even if the locking protrusion is large, the passage resistance will not increase because the locking protrusion is formed into a bridge shape by making a cut.

In the above modification, the locking protrusion 7 is formed into a chevron shape, but it may be formed into a square or a triangle.

Next, other embodiments of the present invention are shown in FIGS. 6A and 7B.

In this embodiment, a strip-shaped flat plate 4 and a corrugated plate 5 having the same width are used, and the intermediate portion of the flat plate 4 in the width direction is provided with a chevron-shaped inward protrusion 9a and an outward protrusion 9b. Stop projection 9
and forming a locking groove lO in which the tip of the locking protrusion 9 engages at the top of the branch at the middle part in the width direction of the corrugated plate 5,
The flat plate 4 and the corrugated plate 5 are overlapped and wound tightly so that the locking protrusion 8 and the locking FjlO are engaged with each other.

With this structure as well, the corrugated plate 5 at the center is covered by the flat plate 4 wound around the outside of the corrugated plate 5.
The flat plate 4 is locked by engaging the inward protrusion 9a with the locking groove lO of the corrugated plate 5, and the flat plate 4 is locked by the corrugated plate 5 wound on the outside thereof. The protrusion 9b is engaged with the locking groove lO of the corrugated plate 5, and the whole is locked and fixed to the casing 1 as one piece.

In addition, in this second embodiment, the locking protrusion 9 and the locking groove lO
One is provided in the width direction of both plates 4.5,
If the strength is insufficient, a plurality of locking grooves 10 may be provided in the width direction, and the locking grooves 10 may be formed by recessing them flatly so as to cross the top of the corrugated plate 5.

Further, the locking protrusions 7, 8, 9 or the locking grooves 1O in both of the above embodiments may have a locking function, and there is no need to make them correspond to the wave pitch of the corrugated plate 5. It is sufficient to provide a large number of them.

(Effects of the Invention) According to the present invention, a large number of locking protrusions that stand up alternately in the front and back directions are formed on both sides of the flat plate in the width direction, and the corrugated plate is overlapped with the locking protrusions using the locking protrusions. Alternatively, a large number of locking protrusions that stand up alternately in the front and back directions are formed in the widthwise middle of the flat plate, and locking grooves corresponding to the locking protrusions are formed in the widthwise middle of the corrugated plate. By forming a This has the effect of preventing the parts from flying out, reducing assembly man-hours, and improving productivity.

[Brief explanation of the drawing]

Figure 1 is a cut side view of the present invention applied to a silencer;
Figures 2 (A) and (B) are perspective views of a flat plate and a corrugated plate, Figure 3 is a front view of this embodiment, and Figures 4 (A) and (B) are perspective views of a flat plate and a corrugated plate of a modified example; Figure 5 is a front view of the modified example, Figure 6
Figures (A) and (B) are perspective views of a flat plate and a corrugated plate of another embodiment, Figure 7 is a cut front view of another embodiment, and Figure 8 is a flat plate of another modification corresponding to Figure 4. FIG. 2... Honeycomb-shaped multi-channel member 4... Flat plate 5... Corrugated plate 6... Passage 7.8.9... Locking protrusions 7a, 8a, 9a... Inward protrusion 7b , 8b, 9b...Outward protrusion 10...Latching groove Patent Applicant: Honda Gijutsu (1 Kogyo Co., Ltd., Figure 7, Figure 5, Figure 6)

Claims (1)

[Scope of Claims] 1. A honeycomb-like multi-channel member in which a plurality of honeycomb-like passages are formed in the axial direction by overlapping a band-shaped flat plate and a corrugated plate and tightening them into a cylindrical shape. A honeycomb-like multi-channel member, characterized in that a large number of locking protrusions that stand up alternately in the front and back directions are formed on both widthwise edges of the flat plate that coincide with the axial direction of the flat plate. 2. In a honeycomb-shaped multi-channel member in which a band-shaped flat plate and a corrugated plate are stacked and rolled up into a cylindrical shape to form a plurality of honeycomb-shaped passages in the axial direction, the honeycomb-shaped multi-channel member matches the axial direction of the multi-channel member. A honeycomb shape characterized by forming a large number of locking protrusions that stand up alternately in the front and back directions, and locking grooves corresponding to the locking protrusions, in the middle of the width direction of the flat plate and the corrugated plate. Multi-channel member.