Insulators and installation methods for insulators

Abstract

Reduce the effort required to manufacture the insulators. [Solution] The insulator is sandwiched inside the vehicle between a body member 91 having a panel flange 91A and the interior or exterior material of the vehicle. The insulator comprises a sheet-like main body 11 and a cutout 12 in which a part of the main body 11 is cut in the thickness direction. The cutout 12 includes a slit portion 12B that cuts into the outer shape 13C of a cantilever beam 13 that extends inward and outward at the edge 11A of the main body 11. The cantilever beam 13 sandwiches the panel flange 91A together with a peripheral edge portion 13A which is a part of the edge 11A that follows the outer shape 13C of the cantilever beam 13 that has been cut into the edge 11A.

Description

Technical Field

[0001] The present disclosure relates to an insulator and a method for attaching the insulator.

Background Art

[0002] In the present disclosure, an "insulator" refers to a part or assembly that is disposed so as to block a path through which sound is transmitted from a sound source side to a transmission side, thereby reducing the sound transmitted to the transmission side. As insulators, various configurations are known, such as sheet-like parts made of felt or the like, and assemblies in which two metal plates are stacked with a gap therebetween.

[0003] Regarding an insulator in the form of a sheet-like part made of felt or the like, for example, the technology of a cowl silencer described in Patent Document 1 is known. This cowl silencer is mounted on a cowl (a type of automotive body member) in which a cowl upper and a cowl inner are joined by a joining flange. The cowl silencer is provided with an upper part covering the cowl upper and a lower part covering the cowl inner as a single component body, and has a flange clamping portion configured by folding back an extending portion of the body extending from both the upper part and the lower part and joining the rear end edges thereof. The flange clamping portion of the cowl silencer positions the cowl silencer between the cowl and an instrument panel (a type of automotive interior material) by sandwiching the inserted joining flange from both the upper and lower sides.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the conventional cowl silencer technology described above, in order to attach the cowl silencer to the cowl, it is necessary to first form the main body as a single component, and then fold and join the extended portion of the main body. Therefore, the conventional technology had the problem of being time-consuming to manufacture the insulator.

[0006] This disclosure makes it possible to reduce the effort required to manufacture insulators. [Means for solving the problem]

[0007] According to one aspect of this disclosure, an insulator is provided which is installed inside a vehicle, sandwiched between a body member having a panel flange and an interior or exterior material of the vehicle. The insulator comprises a sheet-like body and a cutout portion in which a part of the body is cut in the thickness direction of the sheet. The cutout portion includes one or more slit portions at the edge of the body that cut out the outer shape of a cantilever beam extending in an inward-outward direction, with the end face of the edge facing outward and the inside of the body facing inward. The cantilever beam is capable of sandwiching the panel flange together with a peripheral portion which is a part of the edge that follows the outer shape of the cantilever beam cut into the edge.

[0008] Here, "cutting allowance" refers to any configuration that divides an object or a part of an object into one part and another. In other words, "cutting allowance" in this disclosure may include both a cut portion where the object is sheared and a fracture portion where the object is broken. Furthermore, "cutting allowance" in this disclosure may also include a removed portion where the part between one part and another of the object is removed. Specifically, a "removed portion" may be a deleted portion where a part of the object is scraped off, or a heat-removed portion where a part of the object is removed by heat.

[0009] According to the above-mentioned aspect, even if the insulator body does not have a configuration in which a part of the body is folded back and joined, the panel flange can be sandwiched between the cantilever and the peripheral portion that follows the outer shape of the cantilever. Therefore, according to the above-mentioned aspect, the effort required to manufacture the insulator can be reduced by eliminating the need for the step of folding back and joining a part of the body.

[0010] Furthermore, according to the above-mentioned aspect, the cantilever beam and peripheral portion that sandwich the panel flange can be formed without providing an extended portion that extends from the edge of the main body. Therefore, according to the above-mentioned aspect, the amount of material required to manufacture the insulator can be reduced by eliminating the need for the extended portion.

[0011] In other respects, the trimming portion is configured such that a part of the main body is sheared in the thickness direction of the sheet, and includes both a trimmed portion, which is formed by trimming at least a part of the edge, and the slit portion.

[0012] According to the above-mentioned aspect, in the manufacturing of the insulator, the cantilever beam that positions the insulator by sandwiching it between the panel flanges of the body members and the formation of the peripheral portion can be done by the same shearing process as trimming the edges of the main body. Therefore, according to the above-mentioned aspect, the effort required to manufacture the insulator can be further reduced.

[0013] From another perspective, the cantilever beam is formed such that it extends inward from a location on the edge that is further inward than the end face.

[0014] According to the above aspects, the insulator can be positioned by hooking the cantilever beam onto the edge of the panel flange from the outside in the inward-outward direction.

[0015] From another perspective, the cut-off portion includes two slit portions. The two slit portions are arranged to extend inward from each of two locations set on the end face of the edge portion. The cantilever is formed as the portion sandwiched between the two slit portions at the edge portion.

[0016] According to the above-mentioned aspect, the cantilever beam is formed to extend from the inside to the end face at the edge of the main body. Therefore, according to the above-mentioned aspect, when the panel flange is folded (the end edge is folded back with a gap), the cantilever beam can be inserted into this gap to position the insulator.

[0017] From another perspective, when the cantilever beam sandwiches the panel flange together with the aforementioned peripheral portion, it exerts an elastic force that presses the panel flange against the peripheral portion.

[0018] Based on the above aspects, the insulator can be fixed to the body member by clamping the panel flange of the body member with a cantilever and its peripheral edge.

[0019] In other aspects, a method for attaching an insulator is provided, which involves attaching the insulator described above to a body member equipped with a panel flange, which is disposed inside the vehicle. This method for attaching the insulator includes the steps of widening the gap between the cantilever beam and the peripheral edge in the thickness direction of the main body, inserting the panel flange into this gap, and sandwiching the panel flange from both its front and back sides with the cantilever beam and the peripheral edge.

[0020] As described above, by widening the gap between the cantilever beam and the periphery in the thickness direction of the main body, it becomes easier to insert the panel flange into this gap, thereby improving the workability of attaching the insulator to the body member. [Effects of the Invention]

[0021] According to the present disclosure, the labor for manufacturing an insulator can be reduced.

Brief Description of the Drawings

[0022] [Figure 1] It is a diagram showing the trunk of a passenger car to which an insulator according to an embodiment is applied. [Figure 2] It is a diagram showing the right insulator of FIG. 1 with the illustration of the interior material of the trunk omitted. [Figure 3] It is an enlarged view of part III of FIG. 2. [Figure 4] It is a diagram of the peripheral part of FIG. 3 as viewed from the side contacting the panel flange of the body member. [Figure 5] It is a diagram for explaining a method of attaching an insulator according to an embodiment. [Figure 6] It is a diagram showing an insulator according to a modification. [Figure 7] It is a diagram showing an insulator according to a modification.

Mode for Carrying Out the Invention

[0023] Hereinafter, the configurations of an insulator 10 and an insulator 20 (see FIG. 1) according to an embodiment of the present disclosure will be described. In the following description, the directions of "front", "rear", "left", and "right" are defined by the directions as viewed from the vehicle 90 shown in FIG. 1.

[0024] Here, the insulator 10 and the insulator 20 have exactly the same configuration except that the left and right are reversed corresponding to the fact that the insulator 10 is for the right side and the insulator 20 is for the left side. For this reason, hereinafter, for the right insulator 10 and the left insulator 20, the detailed description thereof will be represented by the description of the right insulator 10. And the detailed description of the left insulator 20 will be omitted.

[0025] The insulator 10 is installed inside the vehicle 90, sandwiched between the body member 91 (see Figure 2) and the interior material 90B (see Figure 1). In this embodiment, the vehicle 90 is a sedan-type passenger car with a trunk 90A at its rear, as shown in Figure 1. The interior material 90B is a type of interior lining called a "trunk room trim cover" that forms the design surface on the inside of the trunk 90A. The body member 91 is the wheelhouse inner of the right rear wheel in the vehicle 90 (a curved plate-shaped body member that forms the part of the wheelhouse on the vehicle interior side), as shown in Figure 2. The body member 91 is a sheet metal member whose entire outer edge is configured as a cut panel flange 91A.

[0026] The insulator 10 of this embodiment is composed of a laminated assembly made by bonding two felt sheets together with a film adhesive to form a single elastic sheet (not shown). Each felt sheet constituting the laminated assembly may be made of a chemical fiber such as polyester fiber, a natural fiber such as wool, or a mixture of multiple types of fibers. These felt sheets function as sound-absorbing materials that reduce sound by absorbing sound. With this configuration, the insulator 10 reduces sound solely by absorbing sound.

[0027] The laminated assembly of the insulator 10 is formed into a three-dimensional shape using a press machine (not shown) capable of punching. As shown in Figure 2, the insulator 10 is formed into a three-dimensional shape with a curved sheet-like body 11 and one clip attachment portion 10A. The body 11 is divided into a shielding portion 11B that covers the portion of the body member 91 excluding the panel flange 91A, and an edge portion 11A provided along the outer circumference of the shielding portion 11B. At least a part of the edge portion 11A of the body 11 is positioned to overlap the panel flange 91A. The clip attachment portion 10A has a through hole in the portion of the edge portion 11A of the body 11 that overlaps the panel flange 91A. By inserting the clip 92 through the through hole in the clip attachment portion 10A and the panel flange 91A, the insulator 10 can be fastened to the panel flange 91A.

[0028] The main body 11 of the insulator 10 has a trimmed portion 12, which is formed when a part of its edge 11A is cut by shear in the thickness direction of the sheet formed by the main body 11 (see Figure 5). As shown in Figure 2, this trimmed portion 12 includes both a trimming portion 12A and a continuous slit portion 12B, which will be described later.

[0029] The trimmed portion 12A is formed by trimming the entire outer circumference of the edge portion 11A of the main body 11, and constitutes the end face of this edge portion 11A.

[0030] As shown in Figures 3 and 4, the slit portion 12B is a linear cut mark provided to connect one end portion 11C and the other end portion 11D, which are set on the edge portion 11A of the main body 11. The one end portion 11C constitutes one end of the slit portion 12B, and the other end portion 11D constitutes the other end of the slit portion 12B. Here, the one end portion 11C and the other end portion 11D are set at a location away from the trimming portion 12A that constitutes the end face of the edge portion 11A, on the interior side of the main body 11, and offset in the direction along the edge portion 11A. The slit portion 12B also has an extension portion 12C that extends inward from the one end portion 11C, and a deflected portion 12D that is deflected from the tip or middle portion of the extension portion 12C and extends toward the other end portion 11D. The slit portion 12B is configured to connect one end portion 11C and the other end portion 11D by its extended portion 12C and its curved portion 12D. In this embodiment, the slit portion 12B has a "corner U" shape that is curved in two places.

[0031] With the above configuration, the slit portion 12B cuts into the outer shape 13C of the cantilever beam 13, which extends inward from a location on the edge portion 11A of the main body 11, at a point further inward than the trimming portion 12A that constitutes the end face. In other words, the cantilever beam 13 is configured to extend in an inward-outward direction, with the side of the trimming portion 12A (end face side) facing outward and the inward side facing inward, from a location on the edge portion 11A of the main body 11, at a point further inward than the trimming portion 12A. Furthermore, in the portion of the edge portion 11A of the main body 11 into which the cantilever beam 13 is cut, a peripheral portion 13A is formed that follows the outer shape 13C of the cantilever beam 13, in a manner that is in tandem with the outer shape 13C of the cantilever beam 13.

[0032] As shown in Figures 4 and 5, the cantilever beam 13 can be bent to one or the other side in the thickness direction (see Figure 5) at the edge 11A of the main body 11, thereby widening the gap 13B between the cantilever beam 13 and the peripheral edge 13A in the thickness direction. In this state, as shown in Figure 5, the panel flange 91A of the body member 91 can be inserted into the widened gap 13B, and the panel flange 91A can be sandwiched between the cantilever beam 13 and the peripheral edge 13A from both sides. In this embodiment, when the panel flange 91A is sandwiched together with the peripheral edge 13A, the cantilever beam 13 exerts an elastic force derived from the laminated assembly constituting the insulator 10, which is capable of pressing the panel flange 91A against the peripheral edge 13A.

[0033] Next, we will describe an example of a method for attaching the insulator 10 described above to a body member 91 located inside the vehicle 90 (hereinafter also simply referred to as "the method"). When performing the method, the interior material 90B (see Figure 1) should be left undone beforehand.

[0034] In this method, the insulator 10 is placed over the body member 91 to roughly position it (not shown). At this time, the shielding portion 11B of the insulator 10 is placed over the portion of the body member 91 excluding the panel flange 91A. In addition, the edge portion 11A of the insulator 10 is placed over the panel flange 91A at least in the portion where the clip mounting portion 10A is provided.

[0035] Once the insulator 10 is placed over the body member 91, the clip 92 is inserted through the through hole in the clip mounting portion 10A and the panel flange 91A (not shown). This secures the insulator 10 to the panel flange 91A of the body member 91. In this state, the insulator 10 may rotate around the clip 92 and shift in position relative to or away from the body member 91.

[0036] After securing the insulator 10 to the panel flange 91A with the clip 92, the cantilever beam 13 of the insulator 10 is pushed and bent toward the side of the panel flange 91A (right side in Figure 5), widening the gap 13B between the cantilever beam 13 and the peripheral edge 13A in the thickness direction of the edge 11A of the main body 11. Next, the insulator 10 is displaced in a rotational direction around the clip 92 (not shown), so that the cantilever beam 13 hooks onto the edge of the panel flange 91A from the outside (end face side) in the inward-outward direction, and the panel flange 91A is inserted into the widened gap 13B (see Figure 5). In this step, the cantilever beam 13 and the peripheral edge 13A sandwich the panel flange 91A from both its front and back sides, suppressing the displacement of the insulator 10 in a rotational direction around the clip 92. In other words, the cantilever beam 13 and its peripheral edge 13A sandwich the panel flange 91A from both its front and back sides to position the insulator 10.

[0037] After sandwiching the panel flange 91A between the cantilever beam 13 and the peripheral edge 13A, the interior material 90B is attached by covering the insulator 10. At this time, the insulator 10 is sandwiched between the body member 91 and the interior material 90B, suppressing positional displacement in the direction of approaching or moving away from the body member 91. This completes the attachment of the insulator 10 to the body member 91.

[0038] According to the insulator 10 described above, even if the main body 11 of the insulator 10 does not have a configuration in which a part of the main body 11 is folded back and joined, the panel flange 91A can be sandwiched between the cantilever beam 13 and the peripheral edge 13A that follows the outer shape of the cantilever beam 13. Therefore, the insulator 10 reduces the effort required to manufacture the insulator 10 by eliminating the need for the step of folding back and joining a part of the main body 11.

[0039] Furthermore, with the insulator 10 described above, the cantilever beam 13 and peripheral edge 13A that sandwich the panel flange 91A can be formed without providing an extended portion (not shown) that extends from the edge 11A of the main body 11. Therefore, with the insulator 10, the amount of material required to manufacture the insulator 10 can be reduced by the amount that eliminates the need for the extended portion.

[0040] Furthermore, with the insulator 10 described above, the cantilever beam 13 and peripheral edge 13A that position the insulator 10 by sandwiching the panel flange 91A of the body member 91 can be formed by the same shearing process as trimming the edge 11A of the main body 11 during the manufacturing of the insulator 10. Therefore, the insulator 10 further reduces the effort required for its manufacture.

[0041] Furthermore, with the insulator 10 described above, the cantilever beam 13 can be hooked onto the edge of the panel flange 91A from the outside in the inward-outward direction to position the insulator 10.

[0042] Furthermore, with the insulator 10 described above, the insulator 10 can be fixed to the body member 91 by pressing the panel flange 91A of the body member 91 between the cantilever beam 13 and the peripheral edge 13A.

[0043] Furthermore, according to the method described above, by widening the gap 13B between the cantilever beam 13 and the peripheral edge 13A in the thickness direction of the edge 11A of the main body 11, it is possible to make it easier to insert the panel flange 91A into this gap 13B, thereby improving the workability of attaching the insulator 10 to the body member 91.

[0044] The embodiments for implementing this disclosure have been described above by the embodiment described above. However, it will be clear to those skilled in the art that various substitutions, modifications, and changes are possible without departing from the purpose of this disclosure. That is, embodiments for implementing this disclosure may include all substitutions, modifications, and changes that do not depart from the spirit and purpose of the claims attached to this specification. For example, the following various embodiments can be implemented as embodiments for implementing this disclosure.

[0045] (1) The insulator according to this disclosure is not limited to a configuration in which a sheet-like body is provided with one clip attachment portion and one slit portion. For example, in this disclosure, instead of a clip attachment portion, an insulator 30 (see Figure 6) may be used in which a slit portion 32B is added to the edge portion 31A of the body 31. This insulator 30 can be attached to the body member 91 by sandwiching the panel flange 91A of the body member 91 at multiple locations with the cantilever beams 33 and peripheral edge portions 33A formed by each of the multiple (two in Figure 6) slit portions 32B. In addition, in this disclosure, an insulator 40 (see Figure 7) may be used in which the cutout 42 forming one cantilever beam 43 includes two slit portions 42B. In this insulator 40, the two slit portions 42B are each positioned on the end face 42A of the edge 41A of the main body 41, with one slit portion 42B extending inward from each of the two starting points 41C, which are offset in a direction along the edge 41A. The cantilever beam 43 is formed as the portion sandwiched between the two slit portions 42B, and extends in an inward-outward direction with the end face 42A of the edge 41A facing outward and the inside of the main body 41 facing inward. Here, each of the two slit portions 42B cuts into the outer shape 43C of one side of the cantilever beam 43, and the peripheral edge portion 43A along this outer shape 43C is formed in a pair with the outer shape 43C. In this insulator 40, the cantilever beam 43 is formed on the edge 41A of the main body 41 so as to extend from the inside to the end face. Therefore, with respect to the insulator 40, if the edge of the panel flange is folded (not shown), the cantilever beam 43 can be inserted into the gap of this fold to position the insulator 40.

[0046] (2) The insulators relating to this disclosure are not limited to insulators installed in a sedan-type passenger car, sandwiched between the trunk trim cover and the wheel arch inner. That is, this disclosure can be applied to insulators sandwiched between body members and interior materials of an automobile, as appropriately selected, such as insulators sandwiched between the engine compartment frame (body member) and the dashboard panel (interior material), or insulators sandwiched between the cowl (body member) and the instrument panel (interior material). Furthermore, this disclosure can also be applied to insulators sandwiched between body members and interior materials of an automobile, as appropriately selected, such as insulators sandwiched between the door frame (body member) and the door outer panel (exterior material). In addition, the vehicles to which the insulators relating to this disclosure are installed can be of an appropriately selected type, such as freight cars, railway cars, or towed vehicles. In these cases, the body members to which the insulators are attached are not limited to those made of sheet metal, but may be made of appropriately selected parts such as aluminum die-cast parts or resin parts.

[0047] (3) The insulators relating to this disclosure are not limited to those that sandwich a panel flange having a cut-off configuration at the outer peripheral edge of a body member between a cantilever and a peripheral edge. For example, the cantilever and peripheral edge of the insulator may sandwich a panel flange having a configuration in which the outer peripheral edge of the body member is raised by a flangeing process. Alternatively, the cantilever and peripheral edge of the insulator may sandwich a panel flange having a configuration in which the portion of the body member that extends inward from the outer peripheral edge is partially raised. Specific examples of the "partially raised configuration" include ribs formed by corner hemming, or cut-up pieces formed by lance bending or louvering.

[0048] (4) In the insulator according to the present disclosure, the configuration of the trimming allowance is not limited to those described above. For example, the slit portion of the trimming allowance can be any linear shape, such as a U-shape or a V-shape. The slit portion of the trimming allowance can also have any cutout shape, such as a shape in which one or both of the one end portion and the other end portion are cut out in a circular shape, or a shape in which the entire length from one end portion to the other end portion is a wide strip. The slit portion of the trimming allowance may also be a cut-out processed portion in which the cantilever beam formed by the slit portion is raised. The trimming portion of the trimming allowance may not be provided in part of the edge portion of the insulator. In addition, a part of the trimming allowance may be formed in a shielding portion that is on the interior side of the edge portion of the insulator. This configuration may be advantageous when a spacer or mounting fixture is interposed between the body member, interior material or exterior material and the insulator.

[0049] (5) The insulators relating to this disclosure are not limited to those having the laminated assembly configuration described above. For example, the laminated assembly constituting the insulator may be a two-layer laminated assembly in which a sheet functioning as a sound-absorbing material and a sheet functioning as a sound-insulating material are layered and integrated. In this case, the insulator reduces sound solely by sound insulation. Alternatively, the laminated assembly constituting the insulator may be a three-layer laminated assembly in which a sheet functioning as a sound-insulating material is sandwiched between sheets functioning as a sound-absorbing material from both the front and back sides and integrated. In this case, the insulator reduces sound by both sound absorption and sound insulation. Furthermore, the insulator may be composed of only one of either a sheet functioning as a sound-absorbing material or a sheet functioning as a sound-insulating material. In these cases, the "sheet functioning as a sound-absorbing material" is not limited to the felt sheet described in the embodiment described above, but may be made of an appropriately selected material such as a sheet of polyurethane foam. Furthermore, the "sheet that functions as a sound-insulating material" can be made of a material selected as appropriate, such as an olefin-based elastomer, an ethylene propylene diene monomer elastomer, or an ethylene / vinyl acetate copolymer. If the insulator is a part made up of only one sheet, the insulator can be produced by a molding method selected as appropriate depending on the material that makes up this part (for example, injection molding in the case of polyurethane foam). Here, it is necessary to note that depending on the configuration of the laminated assembly (or parts) that make up the insulator, the insulator may lack elasticity, and its cantilever may not exert the elastic force to press the panel flange against its periphery. Even in this case, the insulator can still be positioned if the cantilever sandwiches the panel flange together with its periphery.

[0050] (6) In the insulator according to the present disclosure, the method for forming the cut allowance is not limited to shearing and can be appropriately changed depending on the constituent material of the insulator and the specific shape of the cut allowance. For example, the cut allowance may be formed by breaking a part of the main body. Also, if the cut allowance is in the shape of a wide strip as described above, the cut allowance may be formed by cutting a part of the main body using a processing method that removes a part of the object. Examples of such processing methods include water jet cutting, push cutting, and sawing, which remove a part of the object, and laser cutting, melting, and electrical discharge machining, which remove a part of the object by heat. [Explanation of symbols]

[0051] 10 Insulators 10A Clip mounting section 11 Main unit 11A Edge 11B Shield part 11C One end part 11D Other end portion 12 cutting allowance 12A Trimming section 12B Slit section 12C extension 12D direction change part 13. Cantilever beam 13A Peripheral area 13B Gap 13C External shape 20 Insulators 30 Insulators 31 Main unit 31A Edge 32B Slit section 33. Cantilever beam 33A Peripheral area 40 Insulators 41 Main unit 41A Edge 41C Starting point 42 cutting allowance 42A End face 42B Slit section 43. Cantilever beam 43A Peripheral area 43C External shape 90 vehicles 90A Trunk 90B Interior material 91 Body components 91A Panel Flange 92 clips

Claims

1. An insulator provided inside a vehicle, sandwiched between a body member having a panel flange and the interior or exterior material of the vehicle, A sheet-like main body, A portion of the main body is cut in the thickness direction of the sheet, Equipped with, The cutting allowance includes one or more slit portions that cut into the outer shape of a cantilever beam extending in an inward-outward direction, with the end face of the edge of the main body facing outward and the inner side of the main body facing inward, The cantilever beam, together with the peripheral edge portion which is a part of the edge portion that follows the outer shape of the cantilever beam and is cut into the edge portion, is capable of sandwiching the panel flange. Insulator.

2. An insulator according to claim 1, The aforementioned trimming allowance is configured such that a part of the main body is sheared in the thickness direction of the sheet, and includes both a trimmed portion in which at least a part of the edge is trimmed, and the slit portion. Insulator.

3. An insulator according to claim 1 or claim 2, The cantilever beam is formed such that it extends inward from a location on the edge that is further inward than the end face. Insulator.

4. An insulator according to claim 1 or claim 2, The aforementioned cutting allowance includes the two aforementioned slit portions, The two slit portions are arranged so as to extend inward from each of the two locations set on the end face of the edge portion. The cantilever beam is formed as a portion sandwiched between the two slit portions at its edge. Insulator.

5. An insulator according to claim 1 or claim 2, The cantilever beam, when sandwiching the panel flange together with the peripheral edge, exerts an elastic force that presses the panel flange against the peripheral edge. Insulator.

6. A method for attaching an insulator according to claim 1 or claim 2 to a body member having a panel flange, which is disposed inside a vehicle, The process includes the step of widening the gap between the cantilever beam and the peripheral edge in the thickness direction of the main body, inserting the panel flange into this gap, and sandwiching the panel flange from both its front and back sides between the cantilever beam and the peripheral edge. How to install insulators.

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