JP2013142298A - Heat insulating member, heat insulating cover, and manufacturing method for heat insulating member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulating member with excellent moldability capable of mounting a heat insulating material without slacking, a heat insulating cover, and a manufacturing method for the heat insulating member.SOLUTION: A heat insulating member 100 comprises a bidirectional corrugated sheet 120 prepared by forming at least one thin flat plate into a bidirectional corrugated shape elongating in an X direction and a Y direction, a heat insulating material 110 with a heat insulation property disposed on one surface of the thin flat plate, and a mounting part for mounting the heat insulating material 110 onto the corrugated process surface of the bidirectional corrugated sheet 120.

Description

  The present invention provides a heat insulating member that suppresses the propagation of vibration noise and heat to the periphery of the engine and the exhaust path by mounting it so as to cover a heated tubular body such as an exhaust manifold or an exhaust pipe. The present invention relates to a method for manufacturing a heat insulating cover and a heat insulating member.

  Conventionally, an exhaust manifold (hereinafter referred to as an exhaust manifold) attached to the side of an engine or an exhaust pipe connected to the exhaust manifold passes combustion exhaust gas whose pressure and temperature pulsate depending on the driving of the engine. The exhaust manifold and the exhaust pipe itself vibrate and generate vibration noise. Further, the exhaust manifold and the exhaust pipe are heated by the high-temperature combustion exhaust gas passing through the inside, and the exhaust manifold and the exhaust pipe itself generate heat. As described above, in order to suppress vibration noise and heat generated from the exhaust manifold and the exhaust pipe from being propagated to the periphery of the engine and the exhaust path, the heat insulator is attached so as to cover the exhaust manifold and the exhaust pipe. In this heat insulator, a heat insulating member made of a heat insulating material and a metal thin plate is formed into a three-dimensional shape corresponding to the shape of the exhaust manifold or the exhaust pipe.

  For example, the heat insulator described in Patent Document 1 is a combination of a covering member made of a steel plate, a mat member bonded to the inside thereof (corresponding to a heat insulating material in the present application), and a glass fiber cloth member bonded to the surface thereof. The mat member is configured to shield heat generated from the exhaust manifold and to improve the sound absorption effect.

  However, in the heat insulator described in Patent Document 1, the mat member and the glass fiber cloth member are fixed by protrusions formed by folding the end edge of the covering member into a key shape. Further, a cross-shaped washer is fixed by welding in order to suppress looseness of the mat member and the glass fiber cloth member. For this reason, there exists a problem that the number of assembly parts of a heat insulator increases and an assembly man-hour increases.

  Further, the exhaust pipe covered with such a heat insulator is bent according to the layout of the exhaust path and is divided into a plurality of parts. In addition, the exhaust pipe on the exhaust path may be provided with a diameter-expanded portion partially expanded for rectification or sound absorption, a bellows portion for absorbing vibration, or the like. For this reason, the exhaust pipe cannot be covered with a heat insulator formed in a tubular shape with a constant pipe diameter, and the heat insulator needs to be three-dimensionally formed by press working according to the shape of the exhaust pipe.

JP 9-49426 A

  In view of the above-described problems, an object of the present invention is to provide a heat insulating member, a heat insulating cover, and a method for manufacturing a heat insulating member that are excellent in moldability and capable of mounting a heat insulating material without slack. .

  The present invention relates to a corrugated thin plate member in which at least one thin plate is formed in a corrugated shape extending in at least one direction, a heat insulating material having a heat insulating property, and disposed on one surface of the thin plate, and the corrugated thin plate It is the member for heat insulation provided with the connection means which connects the corrugated shape surface of a member, and the said heat insulating material, and its manufacturing method, It is characterized by the above-mentioned.

The corrugated shape can be various shapes such as embossing, unevenness, or corrugated.
The heat insulating material has a predetermined thickness and can be a flexible fiber-based heat insulating material such as glass wool or a foamed heat insulating material such as phenol foam.
The connecting means is located in a lattice, zigzag, matrix, or randomly, and is connected to a corrugated thin plate member and a heat-insulating material by surfaces, such as protrusions, locking portions, adhesives, or double-sided tape. It can be a means for integrating the attached thin plate member and the heat insulating material.

By this invention, while being excellent in moldability, the heat insulation member which can mount | wear with a heat insulating material without slack can be comprised.
Specifically, the corrugated thin plate member has a thin plate thickness and can be easily bent and bent, and is secured by forming it into a corrugated shape. Thereby, the corrugated thin plate member can easily form an appropriate three-dimensional shape according to the shape of the exhaust manifold or the exhaust pipe, and can exert an effect of suppressing vibrations and sounds.

  And a heat insulating material and a corrugated thin plate member can be comprised integrally by a connection means. At this time, since the corrugated surface and the heat insulating material are connected, a bending process for fixing the heat insulating material at the edge of the corrugated thin plate member can be eliminated. Thereby, the member for heat insulation which can be cut | disconnected to arbitrary magnitude | sizes and was excellent in the moldability is realizable.

In addition, since the heat insulating material is connected to the corrugated surface of the corrugated thin plate member, it is possible to prevent the heat insulating material from being slackened.
Therefore, the heat insulating member is excellent in moldability and can be fitted with the heat insulating material without slack.

As an aspect of the present invention, the connecting means can be constituted by a plurality of locking portions formed upright in the thickness direction of the thin plate on the surface of the thin plate on which the heat insulating material is disposed.
The locking portion can be formed on a thin plate that does not overlap the heat insulating material, or can be formed on the thin plate after the heat insulating material is overlapped.

  According to the present invention, the heat insulating material can be locked to the corrugated thin plate member by the locking portion. That is, it is possible to connect the heat insulating material and the corrugated thin plate member with the engaging portion without using an adhesive or another member. Thereby, the number of parts which connect a heat insulating material can be reduced.

  Furthermore, when an adhesive is used for the connection between the thin plate and the heat insulating material, the adhesive is denatured by heat from the exhaust manifold or the exhaust pipe and the adhesive force is reduced, and the thin plate and the heat insulating material may be peeled off. On the other hand, since the heat insulating material is not likely to be peeled off by heat by locking the heat insulating material at the locking portion, it is possible to realize a heat insulating member having high heat resistance.

  In addition, when using another member that connects the heat insulating material and the thin plate while crushing the heat insulating material, the heat insulating material and the thin plate cannot be connected with a constant thickness of the heat insulating material. The effect may not be stable. On the other hand, a heat insulating material can be connected with a thin board, keeping the thickness of a heat insulating material by locking a heat insulating material with a latching | locking part. Thereby, the member for heat insulation can show the more stable heat insulation effect and sound absorption effect.

  Furthermore, since it is hard to be influenced by the thickness of a heat insulating material, a thick heat insulating material can be connected with a thin plate. Thereby, the heat insulation member can aim at the improvement of heat insulation easily by using a thick heat insulating material. In addition, by using a thick heat insulating material, the heat insulating member can protect an object covered with the heat insulating member against an impact from the outside.

  Moreover, by providing a plurality of locking portions, the heat insulating material can be connected to the corrugated thin plate member without slack. Thereby, when forming a thin plate in a corrugated shape, it can prevent that a heat insulating material falls.

  In addition, when the heat insulating material is connected to the thin plate with another member, the heat insulating member is difficult to bend at the position where the other member is attached, and thus the moldability of the heat insulating member may be impaired. On the other hand, by locking the heat insulating material at the locking portion, the heat insulating member is easily bent and the formability of the heat insulating member is not impaired.

In addition, if the heat insulating member is curved with the surface different from the surface where the heat insulating material is connected curved, a reaction force is generated in the heat insulating material, so the heat insulating material in the curved state always has a corrugated thin plate member. Press with reaction force. For this reason, the latching state of a heat insulating material and a latching part is hard to be cancelled | released, and there is no possibility that the heat insulating material in a curved state may remove | deviate from a corrugated thin plate member easily. Accordingly, the heat insulating member can be formed into a three-dimensional shape by integrating the corrugated thin plate member and the heat insulating material, and can exhibit excellent moldability.
Therefore, the heat insulating member can reduce the number of parts, connect the thin plate and the heat insulating material, and improve the heat resistance.

  Further, as an aspect of the present invention, a plurality of the thin plates on which the heat insulating materials are overlapped with a predetermined columnar member are arranged in a thickness direction of the thin plate from a surface different from a surface on which the heat insulating materials are arranged. It can be composed of a protrusion formed by punching a part.

The predetermined columnar member may have a columnar shape, a polygonal columnar shape, a polygonal pyramid shape, a conical shape, or the like.
The protrusions may be burrs or burrs formed when a thin plate is punched, or flanges formed by burring.

  According to the present invention, the protrusion protruding toward the heat insulating material is caught by the heat insulating material or entangled with the heat insulating material, whereby the heat insulating material and the thin plate can be connected. For this reason, there is no fear of peeling of the heat insulating material due to deformation of the thin plate or the separate member when the thin plate and the heat insulating material are connected by separate members, and the thin flat plate is insulated without using an adhesive or another member. The materials can be connected. Thereby, the number of parts which connect a heat insulating material can be reduced, and the heat insulating member with high heat resistance which does not have a possibility that a heat insulating material may peel by heat | fever can be implement | achieved.

  In addition, when using another member that connects the heat insulating material and the thin plate while crushing the heat insulating material, the heat insulating material and the thin plate cannot be connected with a constant thickness of the heat insulating material. The effect may not be stable. On the other hand, a heat insulating material can be connected with a thin plate by the protrusion part, maintaining the thickness of a heat insulating material. Thereby, the member for heat insulation can show the more stable heat insulation effect and sound absorption effect.

  Furthermore, since it is hard to be influenced by the thickness of a heat insulating material, a thick heat insulating material can be connected with a thin plate. Thereby, the heat insulation member can aim at the improvement of heat insulation easily by using a thick heat insulating material. In addition, by using a thick heat insulating material, the heat insulating member can protect an object covered with the heat insulating member against an impact from the outside.

  Further, by providing a plurality of protrusions, the heat insulating material can be connected to the flat surface of the thin plate without slack. Thereby, when forming a thin plate in a corrugated shape, it can prevent that a heat insulating material falls.

  In addition, when the heat insulating material is connected to the thin plate with another member, the heat insulating member is difficult to bend at the position where the other member is attached, and thus the moldability of the heat insulating member may be impaired. On the other hand, by connecting the heat insulating material at the protruding portion, the heat insulating member is easily bent and the formability of the heat insulating member is not impaired.

  In addition, if the heat insulating member is curved with a surface that is different from the surface where the heat insulating material is connected curved, a reaction force is generated in the heat insulating material, so the heat insulating material in the bent state is a corrugated thin plate member. Always press with reaction force. For this reason, connection with a heat insulating material and a projection part is hard to be released, and there is no possibility that a heat insulating material in a curved state may easily come off from a corrugated thin plate member. Accordingly, the heat insulating member can be formed into a three-dimensional shape by integrating the corrugated thin plate member and the heat insulating material, and can exhibit excellent moldability.

  Further, the corrugated thin plate member is formed with a plurality of through holes formed by forming the protrusions. When air passes through the through hole, friction is generated between the end face of the through hole and the air, so that vibration energy, which is vibration of the air, can be converted into heat energy by friction. That is, a sound absorption effect and a vibration damping effect can be obtained by the through holes formed by the protrusions.

  Furthermore, the sound absorption effect and the vibration damping effect of the heat insulating member by the synergistic effect of the vibration damping effect and the sound absorption effect by the corrugated thin plate member, the sound absorption effect by the heat insulating material, the sound absorption effect by the through hole, and the vibration damping effect. Can be further improved.

In addition, by adjusting the size of the through hole and the thickness, density, or type of the heat insulating material, a heat insulating member corresponding to a desired frequency can be obtained. Moreover, the member for heat insulation can respond | correspond to a some frequency by adjusting the through-hole and heat insulating material in the part which the member for heat insulation desires.
Therefore, the heat insulating member can reduce the number of parts and connect the thin plate and the heat insulating material, and can improve the sound absorption effect and the vibration damping effect.

As an aspect of the present invention, the connecting means is formed by punching a plurality of predetermined columnar members together with the heat insulating material superimposed on the thin plate from the surface on which the heat insulating material is disposed in the thickness direction of the thin plate. The mounting hole can be configured.
The predetermined columnar member may have a columnar shape, a polygonal columnar shape, a polygonal pyramid shape, or the like.

  According to the present invention, when the mounting hole is formed, the heat insulating material can be protruded from the mounting hole. Thereby, since the protruded heat insulating material is hooked on the end surface of the mounting hole or the heat insulating material is pushed into the mounting hole, the heat insulating material can be connected to the thin plate.

  That is, the heat insulating material can be connected to the thin plate without using an adhesive or another member. Thereby, the number of parts to which the heat insulating material is attached can be reduced, and a heat insulating member with high heat resistance that does not cause the heat insulating material to peel off due to heat can be realized.

  Furthermore, by providing a plurality of mounting holes, the heat insulating material can be connected to the flat surface of the thin plate without slack. Thereby, when forming a thin plate in a corrugated shape, it can prevent that a heat insulating material falls.

  In addition, when the heat insulating material is connected to the thin plate with another member, the heat insulating member is difficult to bend at the position where the other member is attached, and thus the moldability of the heat insulating member may be impaired. On the other hand, by connecting the heat insulating material through the mounting hole, the heat insulating member is easily bent and the formability of the heat insulating member is not impaired.

  In addition, if the heat insulating member is curved with a surface that is different from the surface where the heat insulating material is connected curved, a reaction force is generated in the heat insulating material, so the heat insulating material in the bent state is a corrugated thin plate member. Always press with reaction force. For this reason, it is difficult for the heat insulating material to be detached from the mounting hole, and there is no possibility that the heat insulating material in the curved state is easily detached from the corrugated thin plate member. Accordingly, the heat insulating member can be formed into a three-dimensional shape by integrating the corrugated thin plate member and the heat insulating material, and can exhibit excellent moldability.

  The corrugated thin plate member has a plurality of through holes formed by forming the mounting holes. When air passes through the through hole, friction is generated between the end face of the through hole and the air, so that vibration energy, which is vibration of the air, can be converted into heat energy by friction. That is, a sound absorption effect and a vibration damping effect can be obtained by the through hole formed by the mounting hole.

  Furthermore, the sound absorption effect and the vibration damping effect of the heat insulating member by the synergistic effect of the vibration damping effect and the sound absorption effect by the corrugated thin plate member, the sound absorption effect by the heat insulating material, the sound absorption effect by the through hole, and the vibration damping effect. Can be further improved.

In addition, by adjusting the size of the through hole and the thickness, density, or type of the heat insulating material, a heat insulating member corresponding to a desired frequency can be obtained. Moreover, the member for heat insulation can respond | correspond to a some frequency by adjusting the through-hole and heat insulating material in the part which the member for heat insulation desires.
Therefore, the heat insulating member can reduce the number of parts and connect the thin plate and the heat insulating material, and can improve the sound absorption effect and the vibration damping effect.

Further, as an aspect of the present invention, the heat insulating material can be interposed between the two thin plates.
According to the present invention, since the heat insulating material can be held by two thin plates, it is possible to reliably prevent the heat insulating material from fraying or falling off. Furthermore, since the heat insulating material can be connected to the two thin plates by connecting means, even if the heat insulating member is formed in a three-dimensional shape, the heat insulating material may be unevenly arranged between the two thin plates. Can be prevented.

Further, the two thin plates can be connected via the heat insulating material by the connecting means. Thereby, the bending process etc. which connect thin plates can be made unnecessary.
In addition, by using two thin plates, the sound insulation and the rigidity of the heat insulating member can be improved.
Therefore, the heat insulating member can prevent the heat insulating material from fraying or falling off, and can improve sound insulation and rigidity.

  Further, as an aspect of the present invention, the corrugated shape is a two-way corrugated shape formed by corrugated corrugated shapes extending along the first direction and the second direction intersecting each other, and the two-way corrugated shape The ridges and valleys, each extending along the first direction, are alternately repeated in the second direction, and the ridges are formed along the first direction with the first upstanding part and the second part. Standing portions are alternately arranged rising from the troughs, the troughs are alternately arranged with flat portions and recesses along the first direction, and the first rising portions are the troughs. A pair of side walls that rise in a substantially inverted trapezoidal shape from a portion, and a relatively flat top formed by connecting the tips of the side walls to each other, and the first upright portion is bent inwardly, The tip is wider than the base of the first upright The second upright portion includes a pair of side walls rising from the flat portion, and a concave concave portion in which tips of the side walls are connected to each other, and the first upright portion, the concave portion, and the second upright portion. And the flat portion is formed so as to be intermittently connected along the second direction, and the connecting means includes the first upright portion and the flat portion, and the second upright portion and the concave portion. be able to.

  By this invention, a heat insulating material can be clamped by the 1st standing part and the flat part, and the 2nd standing part and the recessed part. For this reason, a heat insulating material and a corrugated thin plate member can be connected more reliably.

  Specifically, by forming the thin plate in a two-way corrugated shape, the thin plate can be folded in a complicated manner so as to form a throttle portion in the in-plane direction and the out-of-plane direction of the thin plate. The heat insulating material can be sandwiched by the narrowed portions, that is, the first upright portion and the flat portion, and the second upright portion and the concave portion. Furthermore, since the first upright portion is formed in a shape in which the tip end portion is wider than the base end portion, the heat insulating material can be more reliably sandwiched.

  Accordingly, the corrugated thin plate member and the heat insulating material can be connected without using an adhesive, a separate member, or a burring process or a locking part. Furthermore, it is possible to reduce the number of parts to which the heat insulating material is attached and to realize a heat insulating member with high heat resistance that does not cause the heat insulating material to peel off due to heat.

  In addition, when using a separate member that connects the heat insulating material and the thin plate while crushing the heat insulating material, the heat insulating material and the thin plate cannot be connected with a constant thickness of the heat insulating material. The effect may not be stable. On the other hand, the heat insulating material can be connected to the thin plate by the connecting means while maintaining the thickness of the heat insulating material. Thereby, the member for heat insulation can show the more stable heat insulation effect and sound absorption effect.

  In addition, since it is hard to be influenced by the thickness of a heat insulating material, a thick heat insulating material can be connected to a thin plate. Thereby, the heat insulation member can aim at the improvement of heat insulation easily by using a thick heat insulating material. In addition, by using a thick heat insulating material, the heat insulating member can protect an object covered with the heat insulating member against an impact from the outside.

  In addition, when the heat insulating material is connected to the thin plate with another member, the heat insulating member is difficult to bend at the position where the other member is attached, and thus the moldability of the heat insulating member may be impaired. On the other hand, by connecting the heat insulating material in a two-way corrugated shape, the heat insulating member is easily bent and the formability of the heat insulating member is not impaired.

Moreover, since the connection means is formed at a plurality of locations on the corrugated surface by the two-way corrugated shape, the heat insulating material can be connected to the thin plate without slack.
In addition, if the heat insulating member is curved with the surface different from the surface where the heat insulating material is connected curved, a reaction force is generated in the heat insulating material, so the heat insulating material in the curved state always has a corrugated thin plate member. Press with reaction force. For this reason, it is difficult for the heat insulating material to be detached from the connecting means, and there is no possibility that the heat insulating material in the curved state is easily detached from the corrugated thin plate member.

  On the other hand, when the heat insulating member is curved with the surface where the heat insulating material is connected convex, the heat insulating material has a reaction force to restore, but the heat insulating material in the bent state is sandwiched by the connecting means, There is no risk of being easily detached from the corrugated thin plate member. Accordingly, the heat insulating member can be formed into a three-dimensional shape by integrating the corrugated thin plate member and the heat insulating material, and can exhibit excellent moldability.

In addition, the corrugated thin plate member having a thin plate thickness and high rigidity can be formed by the bi-directional corrugated shape. That is, a heat insulating member having high rigidity and excellent moldability can be realized.
Therefore, the heat insulating member can reduce the number of parts and can reliably connect the thin plate and the heat insulating material.

  Moreover, as an aspect of the present invention, the connecting means is formed by superimposing the heat insulating material on the thin plate having the corrugated shape formed along the first direction, and the corrugated along the second direction together with the heat insulating material. It can be formed by corrugating the shape.

According to the present invention, the corrugating process of the two-way corrugated shape and the connection of the heat insulating material can be performed simultaneously.
Specifically, after a heat insulating material is superimposed on one surface of a thin plate subjected to corrugated corrugation along the first direction, corrugated corrugation is applied along the second direction. Form a directional corrugated shape. At this time, the corrugated shape formed in the first direction is deformed so that the corrugated shape formed in the first direction is narrowed in the in-plane direction and the out-of-plane direction by the corrugated shape in the second direction, and the first standing portion, the flat portion, and A connecting means comprising a second upright portion and a concave portion is formed.

That is, it is possible to simultaneously perform the connection of the heat insulating material at the same time as the corrugating process of the two-way corrugated shape. For this reason, the number of steps for connecting the corrugated thin plate member and the heat insulating material is reduced compared to the case where the corrugated thin plate member and the heat insulating material are connected by forming a protrusion or a locking portion on the corrugated thin plate member. be able to. Thereby, the member for heat insulation can be formed efficiently.
Therefore, the member for heat insulation can connect a thin plate and a heat insulating material more efficiently, and can reduce a manufacturing man-hour.

  Further, the present invention is a heat insulating cover that is attached to an exhaust pipe in an exhaust path of an internal combustion engine and shields heat, and the heat insulating member is formed in close contact along the shape of the exhaust pipe. It is characterized by.

According to the present invention, a heat shielding cover corresponding to the shape of the exhaust pipe can be easily formed.
Specifically, when connecting the heat insulating material, it is not necessary to perform a bending process for fixing the heat insulating material to the edge of the corrugated thin plate member by the connecting means. For this reason, it can be set as the member for heat insulation which can be cut | disconnected to arbitrary magnitude | sizes.

  Furthermore, since the corrugated thin plate member is formed of a thin plate, the heat insulating member is excellent in formability. By using such a heat insulating member, it is possible to easily form a three-dimensional heat shielding cover corresponding to the shape of the enlarged diameter portion, the bellows portion, or the like in the exhaust pipe.

In addition, a heat-insulating cover with high heat resistance can be realized by configuring the connecting means with a locking portion, a protruding portion, a mounting hole, or a bi-directional corrugated shape. That is, the heat shield cover can be brought close to or in close contact with the exhaust pipe. Thereby, the heat insulation cover can be formed by bringing the heat insulating member into close contact with the exhaust pipe.
Therefore, the heat insulating cover can be easily formed into a shape corresponding to the shape of the exhaust pipe by using a heat insulating member.

  According to the present invention, it is possible to provide a heat insulating member, a heat insulating cover, and a method for manufacturing a heat insulating member that are excellent in moldability and can be fitted with a heat insulating material without slack.

The external appearance perspective view which shows the external appearance from the planar view of the member for heat insulation. Cross-sectional shape explanatory drawing explaining the cross-sectional shape of the AA arrow view in FIG. 1, BB arrow view, and CC arrow view. Process explanatory drawing explaining the formation process of the member for heat insulation. The external appearance perspective view which shows the external appearance of the heat insulation cover using the member for heat insulation. Sectional shape explanatory drawing explaining the cross-sectional shape of the member for heat insulation in Example 2. FIG. Cross-sectional shape explanatory drawing explaining the cross-sectional shape of the member for heat insulation in Example 3. FIG. Explanatory drawing explaining the sound absorption rate of the member for heat insulation with respect to the frequency of a sound wave. Cross-sectional shape explanatory drawing explaining the cross-sectional shape of the member for heat insulation in Example 4. FIG.

  An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an external perspective view of the heat insulating member 100 from a plan view, and FIG. 2 is a cross-sectional view illustrating the cross-sectional shapes taken along arrows AA, BB, and CC in FIG. The shape explanatory view is shown, and FIG. 3 is a process explanatory view for explaining the process of forming the heat insulating member 100.
2A shows a cross-sectional view taken along the line AA in FIG. 1, FIG. 2B shows a cross-sectional view taken along the line BB in FIG. 1, and FIG. Sectional drawing of CC in FIG. 1 is shown.

As shown in FIG. 1, the heat insulating member 100 is integrally formed of a heat insulating material 110 and a two-way corrugated sheet 120.
Specifically, the two-way corrugated sheet 120 is composed of a thin plate-like aluminum metal plate, and has a corrugated surface subjected to a two-way corrugated corrugated surface as shown in FIG. ing.

  As shown in FIGS. 2 (a) and 2 (b), the two-way corrugated sheet 120 has a raised portion 121 and a valley portion 122 alternately and continuously in the X direction, and in the Y direction. As shown in FIG. 2 (c), the heights of the raised portions 121 and the valley portions 122 are formed by repeatedly forming the top portions (121a, 122a) and the bottom portions (121b, 122b) at regular intervals. .

The raised portion 121 and the valley portion 122 form the above-described two-way corrugated shape by alternately repeating wide and narrow at regular intervals at regular intervals in the X direction.
More specifically, in the two-way corrugated shape of the two-way corrugated sheet 120, the ridges 121 and the valleys 122 each extending along the Y direction are alternately repeated in the X direction.

  The ridges 121 are alternately arranged with the tops 121a and the bottoms 121b rising from the valleys 122 along the Y direction, and the valleys 122 are the tops of the flats 122a and the bottoms along the Y direction. The recesses 122b are alternately arranged.

  The top part 121a is composed of a pair of side walls that rise from the valley part 122 in a substantially inverted trapezoidal shape, and a relatively flat top part that is formed by connecting the tips of the side walls to each other, and the top part 121a is curved inward. The tip end portion is wider than the base end portion of the top 121a.

The bottom 121b is composed of a pair of side walls respectively rising from the flat part 122a and a concave concave part 122b in which the tips of the side walls are connected to each other. The top part 121a and the concave part 122b, and the bottom part 121b and the flat part 122a are arranged in the X direction. It forms so that it may continue intermittently along.
And the mounting | wearing part 123 which clamps the heat insulating material 110 by the top part 121a and the flat part 122a, and the bottom part 121b and the recessed part 122b is comprised.

The heat insulating material 110 is made of glass wool having a predetermined thickness, and is sandwiched between the mounting portions 123 of the two-way corrugated sheet 120 and mounted on the two-way corrugated sheet 120.
More specifically, the heat insulating member 100 is integrally formed through the following steps.

First, as shown to Fig.3 (a), the corrugate-shaped corrugation process to a X direction is given to the thin flat plate 10 of an aluminum metal plate, and the one-way corrugated sheet 11 is formed.
Thereafter, as shown in FIG. 3B, the heat insulating material 110 is overlaid on one surface of the one-way corrugated sheet 11. And the corrugate-shaped corrugation process to a Y direction is given to the one-way corrugated sheet 11 which piled up the heat insulating material 110, and the two-way corrugated sheet 120 is formed.

At this time, the corrugated shape formed in the X direction is deformed so as to be squeezed in the in-plane direction and the out-of-plane direction by corrugated processing in the Y direction, and the top portion 121a, the concave portion 122b, and the bottom portion 121b described above. And the flat part 122a is formed. The top part 121a and the flat part 122a, and the bottom part 121b and the concave part 122b constituting the mounting part 123 sandwich the heat insulating material 110 superimposed on the one-way corrugated sheet 11 with corrugated corrugation processing in the Y direction. In this way, it is formed.
In addition, about the apparatus which performs corrugation processing of a bi-directional corrugated shape, it does not mention here and shall perform corrugation using an appropriate apparatus.

Next, a heat insulating cover 200 that covers the exhaust pipe 20 in the internal combustion engine using the heat insulating member 100 having such a configuration will be described with reference to FIG.
FIG. 4 shows an external perspective view of a heat insulating cover 200 using the heat insulating member 100.

As shown in FIG. 4, the exhaust pipe 20 includes a pipe portion 21 extending from an internal combustion engine (not shown) and a flange portion 23.
The pipe part 21 has a bellows part 22 which is formed by bending a steel pipe into a substantially L shape and is formed in a bellows shape by partially expanding the diameter.
The flange portion 23 is a substantially rhombic flat plate, and is integrally formed by welding to one end of the tube portion 21. The flange portion 23 has two bolt insertion holes 23 a through which bolts (not shown) are inserted in the thickness direction of the flange portion 23.

The heat insulating cover 200 is the above-described heat insulating member 100 cut to an appropriate size, is formed in a shape that is in close contact with the exhaust pipe 20, and is fixed with a hose band 24 in the vicinity of the end in the longitudinal direction. ing.
More specifically, as shown in FIG. 4, the heat insulating cover 200 cuts the heat insulating member 100 to a size that covers the peripheral surface of the tube portion 21 including the bellows portion 22, and the heat insulating material 110 is formed of the tube portion 21. Wrapped to come into contact with the surface of At this time, the heat insulating cover 200 is formed so as to be in close contact with the shape of the tube portion 21. And the both ends vicinity in the heat insulation cover 200 formed in the shape closely_contact | adhered to the pipe part 21 is fastened with the hose band 24, and is being fixed to the pipe part 21. FIG.

The heat insulating member 100 having the above-described configuration and the method for manufacturing the heat insulating member 100 are excellent in moldability and can attach the heat insulating material 110 without slack.
Specifically, the two-way corrugated sheet 120 is thin and can be easily bent and bent, and has a two-way corrugated shape to ensure rigidity. Thereby, the two-way corrugated sheet 120 facilitates formation of a three-dimensional shape according to the shape of the exhaust pipe 20 and can exhibit an effect of suppressing vibration, sound, and the like.

  The heat insulating material 110 and the two-way corrugated sheet 120 can be integrally formed by the mounting portion 123. At this time, since the heat insulating material 110 is attached to the corrugated surface, a bending process for fixing the heat insulating material 110 at the edge of the two-way corrugated sheet 120 can be made unnecessary. Thereby, the member 100 for heat insulation which can be cut | disconnected to arbitrary magnitude | sizes and was excellent in the moldability is realizable.

In addition, since the heat insulating material 110 is attached to the corrugated surface of the two-way corrugated sheet 120, it is possible to prevent the heat insulating material 110 from being slack.
Therefore, the heat insulating member 100 and the method for manufacturing the heat insulating member 100 are excellent in moldability, and the heat insulating material 110 can be mounted without slack.

  Further, the two-way corrugated shape is formed such that the top part 121a and the concave part 122b, and the bottom part 121b and the flat part 122a are intermittently connected along the Y direction, respectively, and the mounting part 123 is formed with the top part 121a and the flat part 122a, In addition, the heat insulating material 110 can be sandwiched between the mounting portions 123 by configuring the bottom portion 121b and the concave portion 122b. For this reason, the heat insulating material 110 can be more reliably attached to the two-way corrugated sheet 120.

  Specifically, by forming the thin metal plate 10 made of aluminum in a two-way corrugated shape, the thin plate 10 can be folded in a complicated manner so as to form a throttle portion in the in-plane direction and the out-of-plane direction. . The heat insulating material 110 can be held by the narrowed portions, that is, the top portion 121a and the flat portion 122a, and the bottom portion 121b and the concave portion 122b. Furthermore, since the top 121a is formed in a shape in which the tip end is wider than the base end, the heat insulating material 110 can be sandwiched more reliably.

  Thereby, the heat insulating material 110 can be attached to the two-way corrugated sheet 120 without using an adhesive or another member. Furthermore, the number of parts to which the heat insulating material 110 is attached can be reduced.

  Further, when the heat insulating material 110 is attached to the thin flat plate 10 with an adhesive, the adhesive is denatured due to heat from the exhaust manifold or the exhaust pipe and the adhesive force is lowered, and the thin flat plate 10 and the heat insulating material 110 may be peeled off. . On the other hand, since the heat insulating material 110 is not likely to be peeled off by the heat by the mounting portion 123, the heat insulating member 100 with high heat resistance can be realized.

  Further, when using another member that connects the heat insulating material 110 and the thin flat plate 10 while crushing the heat insulating material 110, the heat insulating material 110 cannot be connected to the thin flat plate 10 with the thickness of the heat insulating material 110 constant. There is a possibility that the heat insulating effect and the sound absorbing effect by the heat insulating material 110 are not stable. On the other hand, the mounting part 123 can mount the heat insulating material 110 on the thin flat plate 10 while maintaining the thickness of the heat insulating material 110. Thereby, the member 100 for heat insulation can show the more stable heat insulation effect and sound absorption effect.

  In addition, since it is difficult to be influenced by the thickness of the heat insulating material 110, the thick heat insulating material 110 can be attached to the thin flat plate 10. Thereby, the heat insulation member 100 can aim at the improvement of heat insulation easily by using the thick heat insulating material 110. FIG. In addition, by using the thick heat insulating material 110, the heat insulating member 100 can protect the exhaust pipe 20 against an impact from the outside.

  Further, the corrugating process having a two-way corrugated shape can be easily performed due to the high extensibility of the thin aluminum metal plate. Further, the limit drawing ratio (LDR) and the shape retention (rigidity) can be improved by the two-way corrugated shape. Thereby, even in the state formed in a three-dimensional shape along the shape of the exhaust pipe 20, it is possible to form the mounting portion 123 that can securely hold the heat insulating material 110. Further, the thin plate 10 is made of an aluminum metal plate, and the heat insulating material 110 is sandwiched between the mounting portions 123, thereby eliminating the need for a separate member for fixing the heat insulating material 110 and the like and forming a lighter heat insulating member 100. be able to.

  Moreover, when the heat insulating material 110 is attached to the thin flat plate 10 as a separate member, the heat insulating member 100 is difficult to bend at the position where the separate member is attached, and thus the moldability of the heat insulating member 100 may be impaired. On the other hand, by mounting the heat insulating material 110 at the mounting portion 123, the heat insulating member 100 is easily bent, and the formability of the heat insulating member 100 is not impaired.

  In addition, since the plurality of attachment portions 123 are formed on the corrugated surface due to the two-way corrugated shape, the heat insulating material 110 can be attached to the two-way corrugated sheet 120 without slack.

  Further, when the heat insulating member 100 is curved with the surface different from the surface on which the heat insulating material 110 is mounted being curved, a reaction force to be restored is generated in the heat insulating material 110. Therefore, the heat insulating material 110 in the curved state has two directions. The corrugated sheet 120 is always pressed with a reaction force. For this reason, the heat insulating material 110 is unlikely to be detached from the mounting portion 123, and there is no possibility that the heat insulating material 110 in the curved state is easily detached from the two-way corrugated sheet 120.

  On the other hand, when the heat insulating member 100 is curved with the surface on which the heat insulating material 110 is mounted curved, a reaction force is generated in the heat insulating material 110, but the heat insulating material 110 in the bent state is sandwiched between the mounting portions 123. Therefore, there is no possibility that the two-way corrugated sheet 120 is easily detached. Thereby, the heat insulating member 100 can be formed into a three-dimensional shape by integrating the two-way corrugated sheet 120 and the heat insulating material 110, and can exhibit excellent moldability.

In addition, the bi-directional corrugated sheet 120 having a thin plate thickness and high rigidity can be formed by the bi-directional corrugated shape. That is, the heat insulating member 100 having high rigidity and excellent moldability can be realized.
Therefore, the heat insulating member 100 can reduce the number of parts and can reliably attach the heat insulating material 110 to the two-way corrugated sheet 120.

In addition, by attaching the heat insulating material 110 to the one-way corrugated sheet 11 in which the corrugated shape is formed along the X direction, the mounting portion 123 is subjected to corrugated corrugated processing along the Y direction together with the heat insulating material 110. By forming, the corrugation process which forms a bidirectional corrugated shape and the mounting | wearing of the heat insulating material 110 can be performed simultaneously. Thereby, the member 100 for heat insulation can be formed efficiently.
Therefore, the heat insulating member 100 and the method for manufacturing the heat insulating member 100 can more efficiently attach the heat insulating material 110 to the thin flat plate 10 and reduce the number of manufacturing steps.

  In addition, the heat insulating cover 200 is formed in a three-dimensional shape by using the heat insulating member 100 so as to be in close contact with the shape of the exhaust pipe 20, thereby easily forming a shape corresponding to the shape of the exhaust pipe 20. Can do.

  Specifically, when the heat insulating material 110 is mounted, it is not necessary to perform a bending process for fixing the heat insulating material 110 to the edge of the two-way corrugated sheet 120 by the mounting portion 123. Thereby, it can be set as the member 100 for heat insulation which can be cut | disconnected to arbitrary magnitude | sizes. Furthermore, since the two-way corrugated sheet 120 is formed of a thin metal plate made of aluminum, the heat insulating member 100 is excellent in formability. By using such a heat insulating member 100, it is possible to easily form a three-dimensional heat shielding cover 200 corresponding to the shape of the pipe portion 21 and the bellows portion 22 of the exhaust pipe 20.

In addition, since the heat insulating material 110 is attached without using an adhesive or the like, the heat insulating cover 200 with high heat resistance can be realized. That is, the heat shielding cover 200 can be brought close to or in close contact with the exhaust pipe 20. Thereby, the heat insulating cover 200 can be formed by bringing the heat insulating member 100 into close contact with the exhaust pipe 20.
Therefore, the heat insulating cover 200 can be easily formed into a shape corresponding to the shape of the exhaust pipe 20 by using the heat insulating member 100.

  In Example 1 described above, after the unidirectional corrugated sheet 11 was formed, the two-way corrugated sheet 120 was formed by overlaying the heat insulating material 110 on the unidirectional corrugated sheet 11, but the thin flat plate 10 made of an aluminum metal plate was used. Further, the one-way corrugated sheet 11 may be formed by corrugating a corrugated shape in the X direction after the heat insulating material 110 is overlaid. Thereby, since the adhesiveness of the heat insulating material 110 becomes favorable with respect to the corrugated shape of the unidirectional corrugated sheet 11, when the corrugated corrugated processing is performed in the Y direction, the heat insulating material 110 is more attached at the mounting portion 123. It can be securely clamped.

  Moreover, although it demonstrated using the thin flat plate 10 and the heat insulating material 110 of 1 sheet of aluminum metal plates, it is not limited to this, and it is for heat insulation with the thin plate 10 and the heat insulating material 110 of 2 sheets of aluminum metal plates. The member 100 may be configured. In this case, the heat insulating member 110 is disposed between the two thin flat plates 10, and the two-way corrugated corrugated process is performed to form the heat insulating member 100.

  Thereby, since the heat insulating material 110 can be held by the two two-way corrugated sheets 120, the heat insulating material 110 can be reliably prevented from fraying or falling off. Furthermore, since the heat insulating material 110 can be attached to the two two-way corrugated sheets 120 by the mounting portion 123, the two two-way corrugated sheets 120 are formed even if the heat insulating member 100 is formed in a three-dimensional shape. It is possible to prevent the heat insulating material 110 from being biased between the two.

In addition, by using the two bi-directional corrugated sheets 120, the sound insulation and the rigidity of the heat insulating member 100 can be improved.
Accordingly, the heat insulating member 100 can prevent the heat insulating material 110 from fraying or falling off, and can improve sound insulation and rigidity.

Moreover, although it was set as the heat insulation cover 200 which covers the exhaust pipe 20 using the heat insulation member 100, it is good not only as this but the heat insulation cover 200 which covers an exhaust manifold.
Further, the heat insulating cover 200 may be formed by press-forming the heat insulating member 100.

  Further, although the heat insulating member 100 is cut to a size that covers the peripheral surface of the pipe portion 21, it is not necessary to cut the heat insulating member 100 according to the peripheral surface of the pipe portion 21. In this case, the heat insulating member 100 may be wound around the pipe portion 21 a plurality of times.

As another embodiment, a heat insulating member 100 including a locking portion 124 that locks the heat insulating material 110 will be described with reference to FIG.
5 shows a cross-sectional shape explanatory view for explaining the cross-sectional shape of the heat insulating member 100 in Example 2, FIG. 5 (a) shows a cross-sectional view taken along arrow AA in FIG. b) shows a cross-sectional view taken along the line BB in FIG. 1, and FIG. 5 (c) shows a cross-sectional view taken along the line CC in FIG.
Further, in FIG. 1, the illustration of the locking portion 124 is omitted.
The same components as those in the first embodiment are given the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 5, the two-way corrugated sheet 120 includes a plurality of engaging portions 124 that are formed by notching a part of the two-way corrugated sheet 120 and bending toward the heat insulating material 110. The locking portion 124 is formed in advance on the thin flat plate 10 made of an aluminum metal plate by pressing.

  Then, when the heat insulating material 110 is superimposed on the thin flat plate 10, the heat insulating material 110 is locked to the locking portion 124 and overlapped. Thereafter, corrugated corrugation processing is performed in the X direction and the Y direction to form the two-way corrugated sheet 120, and the heat insulating member 100 is configured.

The heat insulating member 100 configured as described above is excellent in moldability and can be mounted with the heat insulating material 110 without slack.
Specifically, since the plurality of locking portions 124 are provided, the heat insulating material 110 can be locked and attached to the two-way corrugated sheet 120. That is, the locking part 124 can play the same role as the mounting part 123.

  Further, when the heat insulating material 110 is attached to the thin flat plate 10 with an adhesive, the adhesive is denatured due to heat from the exhaust manifold or the exhaust pipe and the adhesive force is lowered, and the thin flat plate 10 and the heat insulating material 110 may be peeled off. . On the other hand, since the heat insulating material 110 is not likely to be peeled off by heat by locking the heat insulating material 110 with the locking portion 124, the heat insulating member 100 with high heat resistance can be realized.

Further, by providing a plurality of locking portions 124 on the corrugated surface, the heat insulating material 110 can be attached to the two-way corrugated sheet 120 without slack. Further, by forming the locking portion 124 in advance on the thin metal plate 10 made of aluminum, it becomes difficult to remove the heat insulating material 110 during the corrugated corrugation process, so that the corrugation process can be facilitated. .
Therefore, the heat insulating member 100 can reduce the number of parts, attach the heat insulating material 110 to the two-way corrugated sheet 120, and improve the heat resistance.

In addition, in Example 2 described above, the locking portion 124 is formed in advance on the thin metal plate 10 made of an aluminum metal plate. However, the present invention is not limited to this, and the thin plate 10 on which the heat insulating material 110 is stacked, or a one-way corrugated sheet. 11 may be provided with a heat insulating material 110 by forming a locking portion 124. Or you may form the latching | locking part 124 with respect to the bidirectional corrugated sheet 120 with which the heat insulating material 110 was mounted | worn.
Moreover, although the two-way corrugated corrugated process was performed on the thin flat plate 10, the present invention is not limited to this, and a one-way corrugated shape, an embossed shape, or an uneven shape may be used.

As another embodiment, a heat insulating member 100 having a protrusion 125 will be described with reference to FIG.
6 shows a cross-sectional shape explanatory view for explaining the cross-sectional shape of the heat insulating member 100 in Example 2, FIG. 6 (a) shows a cross-sectional view taken along arrow AA in FIG. 1, and FIG. b) is a cross-sectional view taken along the line BB in FIG.
Further, the protrusion 125 is not shown in FIG.
In addition, the same components as those in the first embodiment and the second embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

As shown in FIG. 6, the two-way corrugated sheet 120 includes a plurality of protrusions 125 that protrude toward the heat insulating material 110.
The protrusion 125 is formed by superposing the heat insulating material 110 on the thin flat plate 10 and is substantially circular with a small diameter at a predetermined interval from the surface different from the surface on which the heat insulating material 110 is overlapped in the thickness direction of the thin flat plate 10. It is formed by punching with a columnar punching jig (not shown). Further, the protrusion 125 is formed such that its tip is caught by the heat insulating material 110. The thin flat plate 10 is formed with a through hole 125a formed by forming the protrusion 125.

  And the corrugate-shaped corrugation process is given with respect to the thin plate 10 in which the projection part 125 was formed toward the X direction and the Y direction, and the two-way corrugated sheet 120 is formed, and the heat insulating member 100 is configured. .

Next, the sound absorption coefficient of the heat insulating member 100 having the heat insulating material 110 and the through hole 125a as described above will be described with reference to FIG.
FIG. 7 shows an explanatory diagram for explaining the sound absorption coefficient of the heat insulating member 100 with respect to the frequency of sound waves.

  7 is formed of a heat insulating material 110 having a thickness of 5 mm and a thin flat plate 10 having a thickness of 0.125 mm, and a through hole 125a having a diameter of 0.5 mm is formed in the thin flat plate 10. The combination with the bi-directional corrugated sheet 120 which is a perforated plate having an occupying ratio (opening ratio) of 0.1% is shown. The combination L2 is a heat insulating material 110 having a thickness of 12 mm, which is different from the combination L1, and a plate thickness. A combination with the bi-directional corrugated sheet 120 formed with the thin flat plate 10 of 0.125 mm, the diameter of the through-hole 125a being 0.5 mm, and the opening ratio of 0.1% is shown. Formed with a 125 mm thin flat plate 10, a two-way corrugated sheet 120 with a through hole 125 a of 0.5 mm in diameter and an aperture ratio of 1.6%, and a thin flat plate 10 with a plate thickness of 0.125 mm To together, through diameter aperture ratio 0.5mm holes 125a indicates a combination of superposed and bidirectional corrugated sheet 120 of 0.1%.

  As shown in FIG. 7, the combinations L1, L2, and L3 all show a high sound absorption coefficient near the frequency of 630 Hz. Since the through-hole 125a having a diameter of 0.5 mm and an aperture ratio of 0.1% is formed in common for the combination L1, L2, and L3, it can be seen that this contributes to the sound absorption coefficient near the frequency of 630 Hz.

  On the other hand, even at a frequency of around 10 kHz, a high sound absorption coefficient is shown. However, the combination L1 and L2 show a higher sound absorption rate than the combination L3. Since the combination L3 is a combination of two bi-directional corrugated sheets 120 having different aperture ratios, it can be seen that the presence or absence of the heat insulating material 110 contributes to the sound absorption coefficient near the frequency of 10 kHz.

That is, the heat insulating member 100 has not only heat insulating properties but also high sound absorbing properties corresponding to a plurality of frequencies due to a synergistic effect of the two-way corrugated sheet 120, the heat insulating material 110, and the through holes 125a.
The above combination is an example, and the thickness and type of the heat insulating material, the diameter of the through hole 125a, the aperture ratio, and the like are appropriately adjusted according to the frequency at which sound absorption is desired.

The heat insulating member 100 configured as described above is excellent in moldability and can be mounted with the heat insulating material 110 without slack.
Specifically, since the plurality of protrusions 125 are provided, the protrusion 125 protruding toward the heat insulating material 110 is caught by the heat insulating material 110 or entangled with the heat insulating material 110 so that the heat insulating material 110 is attached to the thin flat plate 10. can do. That is, the protrusion 125 can play the same role as the mounting portion 123.

  Furthermore, when the thin flat plate 10 and the heat insulating material 110 are connected by separate members by the protrusion 125, there is no fear of peeling of the heat insulating material 110 due to deformation of the thin flat plate 10 or the separate member, and an adhesive or separate member is used. It is possible to attach the heat insulating material 110 to the thin flat plate 10 without using the above. Thereby, the number of parts to which the heat insulating material 110 is attached can be reduced, and the heat insulating member 100 with high heat resistance that does not cause the heat insulating material 110 to be peeled off by heat can be realized.

  In addition, since the plurality of protrusions 125 are provided, the heat insulating material 110 can be mounted on the flat surface of the thin flat plate 10 without slack. Thereby, since it becomes difficult to remove the heat insulating material 110 when forming the thin flat plate 10 in a two-way corrugated shape, it is possible to facilitate corrugation.

  The bi-directional corrugated sheet 120 has a plurality of through-holes 125a formed by forming the protrusions 125. When air passes through the through-hole 125a, friction is generated between the end face of the through-hole 125a and the air, so that vibration energy, which is vibration of air, can be converted into heat energy by friction. That is, the sound absorption effect and the vibration damping effect can be obtained by the through hole 125a formed by the protrusion 125.

  Furthermore, the sound absorption effect of the heat insulating member 100 is obtained by a synergistic effect of the vibration damping effect and sound absorbing effect by the two-way corrugated sheet 120, the sound absorbing effect by the heat insulating material 110, the sound absorbing effect by the through hole 125a, and the vibration damping effect. And the vibration control effect can be further improved.

In addition, by adjusting the height difference of the top part 121a and the flat part 122a, the bottom part 121b and the concave part 122b, the size of the through hole 125a, and the thickness, density, or type of the heat insulating material 110, the desired frequency can be obtained. It can be set as the corresponding member 100 for heat insulation. Furthermore, the heat insulating member 100 can correspond to a plurality of frequencies by adjusting the through hole 125a and the heat insulating material 110 in a desired portion of the heat insulating member 100.
Therefore, the heat insulating member 100 can reduce the number of parts and attach the heat insulating material 110 to the thin flat plate 10, and can improve the sound absorption effect and the vibration damping effect.

  In the third embodiment described above, the thin flat plate 10 is corrugated into a two-way corrugated shape, but is not limited thereto, and may be a one-way corrugated shape, an embossed shape, or an uneven shape.

  Moreover, although the projection part 125 was formed with the substantially cylindrical punching jig | tool, it is not limited to this, You may form the projection part 125 using the punching jig | tool of an appropriate shape. For example, a punching jig having a substantially rectangular shape in a plan view or a star shape may be used. More preferably, the protrusion 125 has a sharp tip or can be formed into a petal shape so that the protrusion 125 and the heat insulating material 110 are easily entangled.

Further, the protrusion 125 may be formed by so-called burring.
Further, although only the thin flat plate 10 is punched with the punching jig, it may be punched so as to penetrate the heat insulating material 110.

  In addition, after forming the protruding portion 125, the tip of the protruding portion 125 may be crushed from the heat insulating material 110 side with a conical crushing jig at the tip, and caulking processing may be performed to expand the diameter of the protruding portion 125. . Thereby, it can prevent that the heat insulating material 110 remove | deviates from the thin flat plate 10 easily.

As another embodiment, a heat insulating member 100 having a mounting hole 126 will be described with reference to FIG.
8 shows a cross-sectional shape explanatory diagram for explaining the cross-sectional shape of the heat insulating member 100 in Example 4, FIG. 8A shows a cross-sectional view taken along the line AA in FIG. b) is a cross-sectional view taken along the line BB in FIG.
Further, the mounting hole 126 is not shown in FIG.
Moreover, the same components as those in the first to third embodiments described above are given the same reference numerals, and detailed descriptions thereof are omitted.

As shown in FIG. 8, the two-way corrugated sheet 120 includes a plurality of mounting holes 126 formed so as to penetrate in the thickness direction.
The mounting hole 126 overlaps the thin plate 10 with the heat insulating material 110, and punches out with a small diameter and a substantially cylindrical shape together with the heat insulating material 110 at a predetermined interval from the heat insulating material 110 side in the thickness direction of the thin flat plate 10. It is formed by punching with a tool (not shown). At this time, the thin plate 10 is formed with a mounting hole flange portion 127 standing in the direction of punching the mounting hole 126.

  Further, when the mounting hole 126 is formed, the heat insulating material 110 is pushed in the punching direction by the punching jig, so that the heat insulating material 110 is pushed into the mounting hole 126 and protrudes from the mounting hole 126. Further, a part of the heat insulating material 110 is pushed into the mounting hole 126 by a punching jig and forms a through hole 128 penetrating in the punching direction.

And the corrugate-shaped corrugation process is given to the thin plate 10 in which the mounting hole 126 is formed in the X direction and the Y direction to form the two-way corrugated sheet 120, and the heat insulating member 100 is configured. .
Furthermore, the heat insulating member 100 is compatible with a plurality of frequencies due to the synergistic effect of the two-way corrugated sheet 120, the heat insulating material 110, the mounting hole 126, and the through hole 128, as well as the heat insulating property, as in the third embodiment. High sound absorption.

The heat insulating member 100 configured as described above is excellent in moldability and can be mounted with the heat insulating material 110 without slack.
Specifically, by providing the mounting hole 126, the heat insulating material 110 can be protruded from the mounting hole 126. Accordingly, the protruding heat insulating material 110 is caught on the end face of the mounting hole 126 or the heat insulating material 110 is pushed into the mounting hole 126, so that the heat insulating material 110 can be mounted on the thin flat plate 10. That is, the mounting hole 126 can play the same role as the mounting portion 123.

  Furthermore, the mounting hole 126 allows the heat insulating material 110 to be mounted on the thin flat plate 10 without using an adhesive or another member. Thereby, the number of parts to which the heat insulating material 110 is attached can be reduced, and the heat insulating member 100 with high heat resistance that does not cause the heat insulating material 110 to be peeled off by heat can be realized.

  In addition, since the plurality of mounting holes 126 are provided, the heat insulating material 110 can be mounted on the flat surface of the thin flat plate 10 without slack. Thereby, since it becomes difficult to remove the heat insulating material 110 when forming the thin flat plate 10 in a two-way corrugated shape, it is possible to facilitate corrugation.

  The bi-directional corrugated sheet 120 is formed with a plurality of mounting holes 126 and through holes 128. When air passes through the mounting hole 126 and the through hole 128, friction is generated between the mounting hole 126 and the end face of the through hole 128 and the air, so that vibration energy, which is vibration of air, is converted into heat energy by friction. Can be converted. That is, the sound absorption effect and the vibration damping effect can be obtained by the mounting hole 126 and the through hole 128.

Further, the sound absorbing effect by the heat insulating member 100 is obtained by the synergistic effect of the vibration suppressing effect and sound absorbing effect by the two-way corrugated sheet 120, the sound absorbing effect by the heat insulating material 110, the sound absorbing effect by the mounting hole 126 and the through hole 128, and the vibration suppressing effect. The effect and the vibration control effect can be further improved.
Therefore, the heat insulating member 100 can reduce the number of parts and attach the heat insulating material 110 to the thin flat plate 10, and can improve the sound absorption effect and the vibration damping effect.

  In the above-described fourth embodiment, the thin flat plate 10 is corrugated into a two-way corrugated shape, but is not limited thereto, and may be a one-way corrugated shape, an embossed shape, or an uneven shape.

  Moreover, although the mounting hole 126 is formed by a substantially cylindrical punching jig, the mounting hole 126 may be formed by using a punching jig having an appropriate shape without being limited thereto. For example, a punching jig having a substantially rectangular shape in a plan view or a star shape may be used.

  Further, the tip of the mounting hole flange 127 may be formed in a sharp shape so that the heat insulating material 110 protruding from the tip of the mounting hole flange 127 can be easily caught by the mounting hole flange 127. Alternatively, a spiral groove or a burr may be formed on the peripheral surface of the mounting hole 126. Thereby, the heat insulating material 110 can be reliably mounted to the mounting hole 126.

Further, the mounting hole 126 and the mounting hole flange portion 127 may be formed by so-called burring.
Moreover, although the mounting hole flange portion 127 is formed, the present invention is not limited to this, and the heat insulating material 110 may be entangled with burrs or burrs when the mounting hole 126 is formed.

In the first to fourth embodiments, the thin flat plate 10 is an aluminum metal plate. However, the present invention is not limited to this, and an appropriate metal plate having plasticity may be used.
Further, the locking portion 124, the protruding portion 125, or the mounting hole 126 may be formed so as to connect the two thin flat plates 10 via the heat insulating material 110.

  Moreover, although the two-way corrugated sheet 120 is formed from one thin flat plate 10, the present invention is not limited to this, and the two-way corrugated sheet 120 is formed by using a plurality of stacked thin flat plates 10 as one thin flat plate. May be.

  In addition, the two-way corrugated sheet 120 that sandwiches the heat insulating material 110 with the mounting portion 123 and the locking portion 124, the protruding portion 125, or the mounting hole 126 have been described in combination. It is good also as a structure. For example, the unidirectional corrugated sheet 11 in which the protrusion 125 and the mounting hole 126 are formed on the thin flat plate 10 may be used.

  Alternatively, the heat insulating material 110 may be temporarily fixed to the thin plate 10 with an adhesive or a double-sided tape, and then corrugated processing such as a bi-directional corrugated shape may be performed. Alternatively, the heat insulating material 110 may be mounted by using the mounting portion 123, the locking portion 124, the protruding portion 125, or the mounting hole 126 in combination with an adhesive.

  Although the heat insulating member 100 is used as the heat insulating cover 200 that shields the heat generated by the exhaust pipe, the heat insulating member 100 is not limited to this and may be used as a heat insulating cover for keeping a heat medium such as an air conditioner.

In correspondence between the configuration of the present invention and the above-described embodiment,
The thin plate of the present invention corresponds to the thin flat plate 10 of the embodiment,
Similarly,
Corrugated shape corresponds to bi-directional corrugated shape,
Corrugated surface corresponds to corrugated surface,
The connecting means corresponds to the mounting portion 123, the locking portion 124, the protruding portion 125, and the mounting hole 126,
The columnar member corresponds to the punching jig,
The first direction corresponds to the X direction,
The second direction corresponds to the Y direction,
The first standing portion corresponds to the top 121a,
The second upright portion corresponds to the bottom 121b,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

  The present invention can be applied to an exhaust manifold, an exhaust pipe, a fuel cell, a catalyst part of an automobile, a pipe of an air conditioner or the like in which heat insulation, heat insulation, vibration suppression, or sound insulation is desired.

DESCRIPTION OF SYMBOLS 10 ... Thin flat plate 20 ... Exhaust pipe 100 ... Thermal insulation member 110 ... Thermal insulation material 120 ... Two-way corrugated sheet 121 ... Raised part 121a ... Top part 121b ... Bottom part 122 ... Valley part 122a ... Flat part 122b ... Concave part 123 ... Mounting part 124 ... Locking portion 125 ... projection portion 126 ... mounting hole 200 ... heat shield cover

Claims (10)

A corrugated thin plate member formed of at least one thin plate in a corrugated shape extending in at least one direction;
Insulating material having heat insulating properties and disposed on one surface of the thin plate;
A heat insulating member comprising a connecting means for connecting the corrugated surface of the corrugated thin plate member and the heat insulating material. The connecting means;
The heat insulating member according to claim 1, wherein the heat insulating member includes a plurality of engaging portions that are formed to stand in a thickness direction of the thin plate on a surface of the thin plate on which the heat insulating material is disposed. The connecting means;
2. The protrusion is formed by punching the thin plate on which the heat insulating material is overlapped from a surface different from the surface on which the heat insulating material is disposed, with a predetermined columnar member, in the thickness direction of the thin plate. Or the member for heat insulation of 2. The connecting means;
Any one of Claim 1 to 3 comprised with the mounting hole formed by punching in multiple places with a predetermined columnar member with the said heat insulating material piled up on the said thin plate toward the thickness direction of the said thin plate from the surface which has arrange | positioned the said heat insulating material. The member for heat insulation as described in any one. The thermal insulation,
The heat insulating member according to claim 1, wherein the heat insulating member is configured to be interposed between the two thin plates. The wavy shape is
A bi-directional corrugated shape formed by corrugated corrugated shape extending along the first direction and the second direction intersecting each other,
The bi-directional corrugated shape,
The ridges and valleys each extending along the first direction are alternately repeated in the second direction,
The raised portions are alternately arranged along the first direction, with the first rising portions and the second rising portions rising from the valley portions,
In the valley, the flat portions and the recesses are alternately arranged along the first direction,
The first upright portion includes a pair of side walls that rise in a substantially inverted trapezoidal shape from the trough portion, and a relatively flat top formed by connecting ends of the side walls to each other. The portion is inwardly curved, and the distal end portion is wider than the proximal end portion of the first upright portion,
The second upright portion is composed of a pair of side walls that respectively rise from the flat portion, and a concave recess that interconnects the tips of the side walls,
Forming the first upright portion and the concave portion, and the second upright portion and the flat portion so as to be intermittently connected along the second direction;
The connecting means;
The heat insulating member according to any one of claims 1 to 5, wherein the heat insulating member includes the first upright portion and the flat portion, and the second upright portion and the concave portion. The connecting means;
The said heat insulating material is piled up on the said thin plate which formed the said corrugated shape along the said 1st direction, and it formed by the corrugated shape corrugated process along the said 2nd direction with the said heat insulating material. Insulating member. A heat shield cover that is attached to an exhaust pipe in an exhaust path of an internal combustion engine to shield heat,
The heat insulating member according to any one of claims 1 to 7,
A heat-shielding cover that is three-dimensionally formed in close contact with the shape of the exhaust pipe. On the corrugated shape surface of the corrugated thin plate member formed of at least one thin plate in a corrugated shape extending in at least one direction,
A method for manufacturing a heat insulating member that has a heat insulating property and manufactures a heat insulating member by connecting a heat insulating material superimposed on one surface of the thin plate with a connecting means. The directions intersecting each other are defined as a first direction and a second direction,
The heat insulating material is superimposed on the corrugated corrugated thin plate along the first direction, and the corrugated corrugated processing along the second direction together with the heat insulating material,
The ridges and valleys extending along the first direction are alternately repeated in the second direction, and the ridges are formed such that the first standing part and the second standing part along the first direction are the valleys. The troughs are alternately arranged from the troughs, and the troughs are alternately arranged with flat parts and recesses along the first direction, and the first rising parts are substantially inverted trapezoidal from the troughs. A pair of side walls that rise and a relatively flat top portion where the front ends of the side walls are connected to each other are internally bent so that the front end portion is wider than the base end portion, and the second upright portion is formed from the flat portion. The first upright portion and the concave portion, and the second upright portion, each formed intermittently along the second direction, each of which is formed by a pair of side walls that rise and a concave concave portion in which the front ends of the side walls are connected to each other. And the two-way corrugated shape is formed by the flat portion, and the first Standing portion and the flat portion, and a manufacturing method of the thermal insulation member according to claim 9 to form the coupling means in said second upright portion and said concave portion.

Images