JPH01317635A - Honeycomb structural body - Google Patents

Abstract

PURPOSE:To simplify a forming process and to reduce the installation cost by caulking and joining each junction part which abuts on each other of base materials being adjacent to each base material for constituting each cell wall of a honeycomb structural body. CONSTITUTION:The honeycomb structural body 1 consists of a plane-like aggregate of a roughly regular hexagonal columnar cell 3 formed by a cell wall 2. In this state, in each cell wall 2 for forming the cell 3, each junction part 5 which abuts on each other of base materials 4 positioned adjacently in each base material 4 made of a metal for constituting said cell wall are joined by bending a pair of cut and divided parts 6 of a symmetrical U-shape formed along the longitudinal direction of the base material 4 and at a prescribed distance extending over both the base materials 4 at every position which has left a suitable interval in the transverse direction of the base material 4, in the same direction, and also, in the direction in which their tips are opposed to each other, and caulking both the base materials between the cut and divided parts 6 of the junction parts 5 by this partial base material 4a which has been bent.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a honeycomb structure comprising a planar assembly of hollow columnar cells of a predetermined shape formed by cell walls.

More specifically, the present invention relates to a honeycomb structure in which joint portions of base materials constituting cell walls are joined by a caulking structure.

"Prior Art" Generally, a honeycomb structure is made by joining a predetermined number of flat base materials in a predetermined positional relationship, that is, in a positional relationship in which adjacent base materials are alternately shifted by half a pitch. After layering, it is stretched to form a shape. A predetermined number of wavy base materials in which concave and convex portions of a predetermined shape are formed alternately and successively by so-called expansion molding means or in a predetermined positional relationship, that is,
By sequentially arranging the concave portions and convex portions of adjacent base materials in a positional relationship in which they are in corresponding contact with each other, and joining the concave portions and convex portions of the base materials that correspond to each other, that is, each joining portion of the adjacent base materials, respectively. Shape. It is molded by so-called corrugate molding means.

In conventional honeycomb structures, no matter which molding method is used, the base materials are all bonded through a bonding material such as an adhesive or a brazing material.

``Problems to be Solved by the Invention J'' By the way, the following same order has been pointed out regarding such conventional honeycomb structures.

First, it has been pointed out that since the bonding is performed using a bonding material such as an adhesive or a brazing material, the forming process is complicated and the honeycomb structure becomes expensive.

In other words, for example, in the case of a metal honeycomb structure joined using a brazing filler metal, pretreatment work such as degreasing, cleaning, and etching is required, making the joining process extremely complicated and requiring many man-hours, resulting in high costs. There was a zoni that was said to be high.

Second, the problem of increased equipment costs was pointed out.

In other words, it is essential for both stretch molding means and corrugated molding means to be joined through a joining material such as adhesive or brazing material, but special equipment is required to perform such joining with high precision. However, there was a problem in that the cost of the equipment was high.

Thirdly, it has been pointed out that a honeycomb structure having excellent heat resistance cannot be easily and inexpensively formed.

In other words, conventional honeycomb structures intended to be used at high temperatures generally use a metal material with excellent heat resistance as a base material, which is bonded using a brazing material such as silver solder or nickel solder. It was formed by. However, since the brazing material used in such honeycomb structures is crystalline, as the temperature increases during brazing, it separates into a low melting point phase and a high melting point phase and gradually melts.
As a result, compositional segregation occurs and so-called melt separation phenomenon occurs, which adversely affects the mechanical strength and scientific properties of the joint, resulting in unstable quality and weak joint strength. It has been pointed out that the honeycomb structure formed using this method has concerns about its strength.

Therefore, in order to eliminate the drawbacks caused by the use of crystalline brazing filler metals such as silver solder and nickel brazing filler metal, some methods, for example, use non-crystalline amorphous filler metals and process them in a vacuum furnace. A honeycomb structure is provided which is formed by bonding base materials together using pressure and heat. Although such a honeycomb structure has the characteristics of stable quality and high bonding strength, the amorphous brazing material is more expensive than general silver solder, and in particular, the size of the honeycomb top 3ia body to be formed is large. In the case of a large honeycomb structure, there is a problem that a large vacuum furnace or the like is required, and the honeycomb structure cannot be easily and inexpensively formed.

Fourthly, the honeycomb structure has a large number of hollow columns, that is,
Since it is made up of a planar collection of straight tubular cells, it has the function of rectifying the fluid that has passed through the cells, but in most areas of each cell, the fluid flow is limited. It also has the characteristic that the flow velocity becomes a Boiseuille flow, and the flow velocity distribution is lowest in the part in contact with the cell wall and becomes higher in the center part and is not uniform.

Therefore, it is suitable as it is for use in a flow straightening device, but the characteristics of the large aperture ratio of the honeycomb structure and the large surface area of the cell walls should be utilized, and on the other hand, the turbulent flow effect can be enhanced to improve the Boisouille flow. For example, a honeycomb structure used in a purification device can fully achieve its purpose by reducing the flow rate, making the flow velocity distribution uniform, and actively bringing the passing fluid closer to the cell walls. In this case, it cannot be used as is, and it is necessary to process the cell wall surface to form a large number of uneven parts, such as drilling holes at predetermined positions, in order to enhance the turbulent flow effect. was there.

The following points have been pointed out with conventional honeycomb structures.

The present invention was made in view of the above-mentioned circumstances, and its purpose is to join each joint of each base material by a caulking structure without using a joining material such as an adhesive or a brazing material. By this, the molding process is simple, excellent in terms of cost, and it is possible to reduce equipment costs, and moreover, it is possible to easily and inexpensively obtain a product with excellent heat resistance.
Furthermore, it is an object of the present invention to propose a honeycomb structure that also has the function of enhancing the turbulent flow effect without any special processing.

"Means for Solving the Problems" The present invention has been made to achieve the above object, and the technical solutions thereof are as follows.

This honeycomb structure is a honeycomb structure consisting of a planar aggregate of hollow columnar cells having a predetermined shape formed by cell walls. The joint portions of the base materials that come into contact with each other are joined by a caulking structure.

In the second aspect of the present invention, the joint portions of the adjacent base materials that abut each other are caulked and joined by a portion of the base materials of the joint portions that are bent together.

Further, in the third aspect of the present invention, the joint portions of the adjacent base materials that abut each other are caulked and joined with a stopper such as a staple.

Further, in a fourth aspect of the present invention, the joint portions of the adjacent base materials that come into contact with each other are caulked and joined with studs such as rivets.

"Function" Since the honeycomb structure according to the present invention comprises the above means, it functions as follows. In other words, the joints of adjacent base materials that make up the cell walls of the honeycomb structure are joined by a caulking structure, that is, some of the joints are bent together. Firstly, the molding process can be significantly simplified since the base material or the stable are caulked and joined using clasps such as clasps or rivets. Second, no special equipment is required for molding, and the molding can be performed using simple equipment. Thirdly, a honeycomb structure with excellent heat resistance can be easily obtained. Fourthly, since unevenness occurs in the caulking structure at the joint of the base materials, the turbulent flow effect can be enhanced without any special processing.

"Embodiments" The present invention will be described below based on embodiments shown in the drawings.

FIG. 1 is a perspective view of a main part showing an embodiment of a honeycomb structure according to the present invention, FIG. 2 is a plan view of the main part of FIG. 1, and FIG. 3 is a line 11 in FIG. 2. FIG.

In the figure, reference numeral 1 denotes a metal honeycomb structure, and this honeycomb structure 1 is composed of a planar assembly of substantially regular hexagonal columnar cells 3 formed by cell walls 2.

The cell wall 2 forming the cell 3 is as follows. That is, in each cell wall 2, each joint portion 5 of each adjacent base material 4 in each metal base material 4 constituting the cell wall 2 corresponds to and abuts on the base material 4 in the illustrated example. Symmetrical U-shaped strips are formed along the longitudinal direction of the base material 4 at predetermined distances from each other at appropriate intervals in the width direction (four locations in the illustrated example). The pair of cutting parts 6 are both in the same direction (downward in the illustrated example)
, and are joined by bending their tips in directions facing each other and caulking the side base material 4 between the cut portions 6 of the joint portion 5 with this bent part of the base material 4a. .

In addition, a structure in which the joint parts 5 of the side base materials 4 that are in corresponding contact with each other is joined by bending a part of the side base materials 4 of the joint part 5 and caulking the side base materials 4 is shown in FIGS. 4 and 4. As shown in Figure 5,
Equally spaced across the side base material 4 at appropriate portions of the joint portions 5 of each other,
A plurality of cut portions 6 are formed in a radial manner to have the same length, and the base material 4 at the portion where these cut portions 6 are formed is
Both are bent in the same direction (downward in the illustrated example), and the joint portion 5 of the side base material 4 is formed by these bent base materials 4a.
It is also possible to have a structure in which the parts are caulked into a ring shape and joined together.

Therefore, in the above example, the joined joint 5
There is a cutting part 6 on the second side of the cell wall, and a through hole is formed in the part.
That is, a concave portion is formed, and a convex portion is formed from one part of the bent base material.

6 and 7 show an example in which the joints of both base materials are caulked and joined using staples, respectively. FIG. 6 is a plan view of the main part, and FIG. It is a sectional view taken along the line ■-■.

In this example, the needle portions 7b provided opposite to each other at both ends of the main body portion 7a of the staple 7 are pierced through appropriate portions of the joint portions 5 of both base materials 4, and the bent needle portions 7b are The joint portion 5 of both base materials 4 is caulked and joined by the tip portion and the main body portion 7a.

In this example, staples 7 are used for caulking and joining the joining portions 5, but instead of the staples 7, other clasps may be used for caulking and joining.

FIGS. 8 and 9 each show an example in which the joints of both base materials are caulked and joined using rivets, and FIG.
A plan view of the main part, FIG. 9, is a sectional view taken along the tx-rX line in FIG. 8.

In this example, by crushing the protruding tip of the rivet body 8a of the rivet 8 inserted into the pilot hole 9 bored at an appropriate location in the joint 5 of both base materials 4, the crushed The protruding tip and head 8 of the rivet body 8a
The joint portion 5 of both base materials 4 is caulked and joined by b.

In this example, rivets 8 are used for caulking and joining the joining portions 5, but instead of the rivets 8, other rivets may be used for caulking and joining.

In addition, on each of the above-mentioned sides, the joint portions 5 of both base materials 4 in contact with each other are caulked with a part of the bent base material 4a of the joint portion 5, a stopper such as a staple 7, or a rivet such as a rivet 8. , Regarding the caulking, the parts to be joined and the number of parts to be joined, etc. in the joint part 5, please refer to the joint part 5.
Although it varies depending on the width and length of the honeycomb structure 1, that is, the thickness of the honeycomb structure 1, it may be set so as to obtain desired bonding strength, turbulence effect, etc.

In addition, when caulking and joining the joint parts 5, it is not necessarily necessary to caulk and join each joint part 5 with the same caulking structure. For example, it is not necessary to caulk and join each joint part 5 with the same caulking structure. 7 or the like, depending on the thickness, type, etc. of the base material 4 to be used, or a method suitable for the purpose of use of the honeycomb structure 1. What is necessary is to caulk and join using a caulking structure.

The metal honeycomb structure 1 has been explained above, but
The honeycomb structure is not limited to being made of metal. According to a caulking structure in which the honeycomb structure is caulked and joined using a stopper such as the staple 7 or a rivet such as the rivet 8 described above, the material of the base material may be a plastic material, etc. A nonmetallic honeycomb structure made of a nonmetallic material may also be used.

The honeycomb structure is as described above.

Next, the forming method will be explained using the case of a metal honeycomb structure 1 as an example.

When forming the honeycomb structure 1, in the case of using corrugate forming means, wave-shaped base materials 4 in which recesses and protrusions of a predetermined shape are formed alternately and consecutively are Each time they are arranged in a positional relationship, they can be molded by sequentially assembling the adjacent base materials 4 while joining them by caulking the joint portions 5 that are in contact with each other.

In addition, in the case of a stretch forming method, the stacked flat base materials 4 are connected to adjacent base materials 4 alternately set to be joined in a positional relationship shifted by half a pitch. When the flat base materials 4 are stacked, each time the base materials 4 are stacked one by one, the corresponding joints 5 with the adjacent base materials 4 are caulked. The honeycomb structure 1 according to the present invention can be formed by sequentially stacking the layers while bonding them, and after stacking, expanding in the stacking direction.6 In the honeycomb structure 1 according to the present invention, the bonding portions 5 of the base materials 4 are bonded by a caulking structure, That is, a part of the base material 4 of the joint part 5 that is bent together, or the staple 7
Alternatively, since they are caulked and joined using rivets 8 or the like, firstly, even in the case of the metal honeycomb structure 1, pre-treatment etc. are not required, so the forming process can be significantly simplified. can. Second, no special equipment is required during molding, and the honeycomb structure 1 can be molded using simple equipment. Thirdly, the honeycomb structure 1 with excellent heat resistance can be easily obtained. Fourthly, since irregularities occur in the caulked elliptical portion of the joint portion 5 of the base material 4, the honeycomb structure 1 having the function of enhancing the turbulent flow effect can be obtained without any special processing.

"Effect of the Invention J As detailed above, according to the honeycomb structure according to the present invention, since each joint of the base material is joined by a caulking structure, the molding process is significantly simplified. , is excellent in terms of cost, and since no special equipment is required for molding, equipment costs can be reduced, and a honeycomb structure with excellent heat resistance can be easily and inexpensively obtained, and, It has become possible to form a honeycomb structure that has the function of increasing the turbulent flow effect without any special processing, and the problems that conventionally existed with this type of honeycomb structure have been eliminated. The effects exhibited by the honeycomb structure according to the invention are remarkable and significant.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of a honeycomb structure according to the present invention,
FIG. 2 is a plan view of the essential portion of FIG. 1, and FIG. 3 is a cross-sectional view taken along the line -■ in FIG. 2. Figures 4 and 5 each show an example of a pond with a caulked structure made of a part of the base material that is bent. Figure 4 is a plan view of the main part, and Figure 5 is the same as in Figure 4. It is an arrow sectional view along the VV line. FIGS. 6 and 7 show an example in which the joints of both base materials are caulked and joined using staples, respectively. FIG. 6 is a plan view of the main part, and FIG. 7 is a - 3 is a cross-sectional view taken along the line. 8 and 9 respectively show an example in which the joints of both base materials are caulked and joined with rivets7, FIG. 8 is a plan view of the main part, and FIG. 9 is the IX of FIG. 8. - It is a sectional view taken along the line IX. DESCRIPTION OF SYMBOLS 1... Honeycomb structure, 2... Cell wall, 3... Cell, 4... Base material, 4a... Bent base material, 5...
...Joint part, 6...Cut part, 7...Staple, 8
... Rivet patent applicant Showa Aircraft Industry Co., Ltd. Agent Masami Kamo Shimo Figure 2 6 4a 7a

Claims (4)

[Claims] (1) In a honeycomb structure consisting of a planar aggregate of hollow columnar cells having a predetermined shape formed by cell walls, adjacent base materials of each base material constituting each cell wall are A honeycomb structure characterized in that each joint portion that contacts each other is joined by a caulking structure. (2) Each joint portion of the adjacent base materials that abuts each other is caulked and joined by a portion of the base material of the joint portion that is bent together. The honeycomb structure described. (3) The honeycomb structure according to claim 1, wherein the joint portions of the adjacent base materials that come into contact with each other are caulked and joined with clasps such as staples. (4) The honeycomb structure according to claim 1, wherein the joint portions of the adjacent base materials that come into contact with each other are caulked and joined with studs such as rivets.