Bracket and mounting structure of exhaust system component using the same

Abstract

To provide a bracket capable of preventing erroneous assembly, and a mounting structure of an exhaust system component using the same.SOLUTION: A bracket 3A-3F to be fixed to an exhaust system component 2 and used for mounting a component to be mounted is provided with leg parts 10A-10F to be fixed to the exhaust system component 2 and mounting parts 11A-11F for mounting the component to be mounted. Through-holes 13A to 13F are drilled in mounting surfaces 12A to 12F on the exhaust system component side of mounting parts 11A to 11F, seating surfaces 15A to 15F are provided on the mounting surfaces 12A to 12F, and first screwing members 16A to 16F are fixedly provided on surfaces of the mounting parts 11A to 11F opposite to the mounting surfaces 12A to 12F; Mounting side engaging parts 20A-20F to be engaged with the jig side engaging parts 19A-19F of the jigs 18A-18F are provided on parts except the bearing surfaces 15A-15F in the mounting parts 11A-11F.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a bracket and an exhaust system component mounting structure using the bracket. [Background technology]

[0002] A common method for attaching a heat insulator or other component to a vehicle exhaust system component such as an exhaust manifold or catalytic converter involves welding a bracket to the outer surface of the exhaust system component, placing the component on the mounting surface of the fixed bracket, and fastening the two together with a screw thread.

[0003] For example, when attaching a bracket to a branch pipe of an exhaust manifold, if the bracket is designed so that it can be attached to the branch pipe even when rotated 180 degrees around the screw axis, which is the axial center of the screwing means, there is a risk that the bracket will be assembled in the wrong orientation.

[0004] In order to prevent this incorrect assembly, it has been proposed to position the screwing means and the seating surface offset from the mounting portion of the bracket so that the bracket is uniquely determined relative to the jig (Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-107466 Summary of the Invention [Problem to be solved by the invention]

[0006] In recent years, the number of brackets required to support heat insulators and other components has increased due to their larger size. Although the shapes of the brackets are similar, they are different, making it necessary to take measures to prevent incorrect assembly, such as using the wrong bracket to attach an exhaust system component.

[0007] The bracket described in Patent Document 1 does not function to prevent incorrect assembly.

[0008] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a bracket that can prevent incorrect assembly, and an exhaust system component mounting structure that uses the bracket. [Means for solving the problem]

[0009] In order to solve the above problems, the present invention provides a bracket that is fixed to an exhaust system component and used to attach a mounted component, comprising: The exhaust system component has a leg portion that is fixed to the exhaust system component and a mounting portion for mounting the mounted component, a through hole is drilled in a mounting surface of the mounting portion on the exhaust system component side, and a seat surface is provided on the mounting surface so as to be coaxial with an axis of the through hole; a first screw member is fixed to a surface of the mounting portion opposite to the mounting surface so as to be coaxial with an axis of the through hole; The bracket is characterized in that a mounting-side engaging portion that engages with a jig-side engaging portion of a jig is provided on the mounting portion except for the seat surface.

[0010] In addition, the mounting side engaging portion may be one or a combination of a hole drilled in the mounting surface, a recess recessed from the mounting surface, or a notch formed in the mounting surface, and may be configured to engage with the jig side engaging portion when the mounting portion is held by the jig.

[0011] Further, in a mounting structure for an exhaust system component in which a plurality of brackets are fixed to an exhaust system component and a mounted component is mounted to the brackets, The bracket has a leg portion that is fixed to the exhaust system component and a mounting portion for mounting the mounted component, a through hole is drilled in a mounting surface of the mounting portion on the exhaust system component side, and a seat surface is provided on the mounting surface so as to be coaxial with an axis of the through hole; a first screw member is fixed to a surface of the mounting portion opposite to the mounting surface so as to be coaxial with an axis of the through hole; a mounting-side engaging portion that engages with a jig-side engaging portion of a jig is provided on a portion of the mounting portion excluding the seat surface; This is an exhaust system component mounting structure characterized in that the mounting side engaging portion of one bracket differs from the mounting side engaging portions of the other brackets in terms of combination of type, shape, number and position. [Effects of the Invention]

[0012] The present invention has legs that are fixed to an exhaust system component and a mounting portion for mounting the component to be mounted, and a through hole is drilled in the mounting surface of the mounting portion on the exhaust system component side, a seat is provided on the mounting surface so that it is coaxial with the axis of the through hole, and a first screw member is fixed to the surface of the mounting portion opposite the mounting surface so that it is coaxial with the axis of the through hole, and a mounting side engaging portion that engages with the jig side engaging portion of the jig is provided on the part of the mounting portion excluding the seat, so that only one bracket can be mounted to one jig and incorrect assembly can be prevented. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a front view of an exhaust system component mounting structure according to an embodiment of the present invention; [Figure 2] Back view of Figure 1. [Figure 3] 1A is a front view, FIG. 1B is a side view, and FIG. 1C is a rear view of a first bracket used in an embodiment of the present invention. [Figure 4] FIG. 10 is a schematic side view showing a state in which a jig is attached to a first bracket. [Figure 5] 1A and 1B are a front view and a side view, respectively, of a second bracket used in an embodiment of the present invention. [Figure 6] 1A and 1B are a front view and a side view, respectively, of a third bracket used in an embodiment of the present invention. [Figure 7] 10A and 10B are a front view and a side view, respectively, of a fourth bracket used in an embodiment of the present invention. [Figure 8] 10A and 10B are a front view and a side view, respectively, of a fifth bracket used in an embodiment of the present invention. [Figure 9] 10A and 10B are a front view and a side view, respectively, of a sixth bracket used in an embodiment of the present invention. [Figure 10] 1A and 1B are a front view and a side view, respectively, of an example of a bracket that can be used in an embodiment of the present invention. [Figure 11] 10A and 10B are a front view and a side view, respectively, of another example of a bracket that can be used in an embodiment of the present invention. [Figure 12] FIG. 10 is a front view of another example of a bracket that can be used in an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] The present invention relates to an exhaust system component mounting structure for mounting a mounted member such as a heat insulator to an exhaust system component such as an exhaust manifold, catalytic converter, muffler, etc., which is used to discharge exhaust gas emitted from an internal combustion engine of an automobile, etc. to the outside. Hereinafter, the present invention will be described based on an embodiment in which the exhaust system component mounting structure is applied to a mounting structure for mounting a mounted member, a heat insulator, to an exhaust manifold, which is an exhaust system component.

[0015] FIG. 1 is a front view of an exhaust manifold mounting structure 1, which is an exhaust system component 2 according to an embodiment of the present invention, and FIG. 2 is a rear view of FIG.

[0016] As shown in FIGS. 1 and 2, a plurality of brackets 3A to 3F are fixed by welding to the outer surface of the exhaust manifold, which is an exhaust system component 2.

[0017] The brackets 3A to 3F have leg portions 10A to 10F for fastening to the exhaust system component 2 by welding, and mounting portions 11A to 11F for mounting a heat insulator, which is a member to be mounted (not shown).

[0018] Mounting surfaces 12A to 12F are formed on the mounting portions 11A to 11F on the side of the mounted member. Through holes 13A to 13F are drilled in the mounting surfaces 12A to 12F, and bearing surfaces 15A to 15F are formed on the mounting surfaces 12A to 12F so as to have the same axis as the axis XX of the through holes 13A to 13F and be coaxial therewith.

[0019] First screw members 16A to 16F having female threads are fixed by welding or the like to the surfaces of the mounting portions 11A to 11F opposite the mounting surfaces 12A to 12F so as to have the same axis as the axis XX of the through holes 13A to 13F and be coaxial. A second screw member (not shown) having a male thread can be screwed into the first screw members 16A to 16F having female threads. In this embodiment, projection nuts are used as the first screw members 16A to 16F, and bolts are used as the second screw members.

[0020] From the viewpoint of strength, the bearing surfaces 15A to 15F must be free from irregularities and deposits within the range required for close contact with the mounting surface of the mounting member.

[0021] In this embodiment, the range of the bearing surfaces 15A to 15F is approximately the same as the bearing surfaces of the first screw members 16A to 16F and the second screw members (not shown).

[0022] Mounting surfaces 12A to 12F are provided on the portions excluding seat surfaces 15A to 15F with mounting side engaging portions 20A to 20F that engage with jig side engaging portions 19A to 19F (jig side engaging portions 19B to 19F are not shown) of jigs 18A to 18F (jigs 18B to 18F are not shown).

[0023] As shown in FIG. 4, each of the jigs 18A to 18F has insertion pins 21A to 21F (note that insertion pins 21B to 21F are not shown) that are inserted into and engaged with the through holes 13A to 13F and the first screw members 16A to 16F, and jig-side engagement portions 19A to 19F that engage with the mounting-side engagement portions 20A to 20F of the brackets 3A to 3F.

[0024] The mounting surfaces 12A to 12F of the brackets 3A to 3F can be attached so that they are in close contact with the mounting surfaces 22A to 22F (mounting surfaces 22B to 22F are not shown) of each jig 18A to 18F, and the attached state can be maintained by magnets (not shown).

[0025] The insertion pins 21A to 21F of each jig 18A to 18F are inserted into the through holes 13A to 13F and the first screw members 16A to 16F, and the mounting side engagement portions 20A to 20F of each jig 18A to 18F are engaged with the mounting side engagement portions 20A to 20F of the brackets 3A to 3F, thereby making it possible to attach the brackets 3A to 3F to each jig 18A to 18F.

[0026] As described above, when the proper brackets 3A to 3F are attached to the jigs 18A to 18F, the state can be maintained, and the legs 10A to 10F of the attached brackets 3A to 3F come into contact with predetermined positions on the exhaust manifold 2, allowing welding to begin.

[0027] Each jig 18A to 18F is designed so that only the corresponding bracket 3A to 3F can be attached, and if an incompatible bracket 3A to 3F is attached, the bracket 3A to 3F cannot be attached properly in a state of being in close contact with the jig 18A to 18F. Therefore, a detection device or an operator can recognize that the bracket 3A to 3F is not attached properly to the jig 18, and welding of the incorrect bracket 3A to 3F to the exhaust system part will not begin, thereby preventing the assembly of incorrect products.

[0028] After the brackets 3A to 3F are fixed to the exhaust system component 2, the member to be attached is placed on it, and bolts, which are second screwing members (not shown), are inserted into the through holes 13A to 13F of the brackets 3A to 3F, and then screwed into the first screwing members 16A to 16F to attach the member to the exhaust system component 2.

[0029] As shown in Figures 3 to 9, each bracket 3A to 3F has legs 10A to 10F, mounting portions 11A to 11F, mounting surfaces 12A to 12F, through holes 13A to 13F, seat surfaces 15A to 15F, and first screw members 16A to 16F, each having the same alphabetical symbol as the bracket.

[0030] The first bracket 3A will now be described.

[0031] As shown in FIG. 3, the first bracket 3A has an attachment side engaging portion formed of a through hole 20A.

[0032] The center of through-hole 13A is formed on the central axis in the width direction of mounting surface 12A (left-right direction in FIG. 3(a)). The end face of mounting surface 12A opposite leg portion 10A is formed in an arc shape. Both side surfaces of mounting surface 12A are formed in a straight line, and the ends of leg portion 10A on both sides are located on the opposite side of leg portion 10A from the center of through-hole 13A.

[0033] Hole 20A, which is the mounting-side engaging portion, is provided outside the range of seat surface 15A indicated by the two-dot chain line and is formed on the central axis in the width direction of mounting surface 12A. Furthermore, hole 20A, which is the mounting-side engaging portion, is formed so as not to protrude outward from the outer peripheral surface of mounting portion 11A.

[0034] The first bracket 3A is formed by bending a metal plate material to integrally form a leg portion 10A and a mounting portion 11A.

[0035] The second bracket 3B will now be described.

[0036] As shown in FIG. 5, the second bracket 3B has an attachment side engagement portion that is configured with a through hole 20B1 and a recessed portion 20C2.

[0037] The center of through-hole 13B is formed on the central axis in the width direction of mounting surface 12B (left-right direction in FIG. 5(a)). The end face of mounting surface 12B opposite leg portion 10B is formed in an arc shape. Both side surfaces of mounting surface 12B are formed in a straight line, and the ends of leg portion 10B on both surfaces are located on the opposite side of leg portion 10B from the center of through-hole 13B.

[0038] The hole 20B1 and recess 20B2, which are the mounting-side engaging portions, are provided outside the range of the bearing surface 15B indicated by the two-dot chain line. The hole 20B1 is formed at a position different from the central axis in the width direction of the mounting surface 12B, i.e., at a position offset from the central axis, and is formed at a position different from the hole 20A, which is the mounting-side engaging portion of the bracket 3A.

[0039] Furthermore, recess 20B2 is formed in the center of mounting surface 12B in the width direction. Mounting surface 22B of jig 18B is formed in a shape corresponding to mounting surface 12B so that it can be in close contact with mounting surface 12B, including recess 20B2. Furthermore, hole 20B1 and recess 20B2, which are mounting side engagement portions, are formed so as not to protrude outward from the outer circumferential surface of mounting portion 11B.

[0040] The second bracket 3B is formed by pressing a metal plate material to integrally form a leg portion 10B and a mounting portion 11B.

[0041] The third bracket 3C will now be described.

[0042] As shown in Fig. 6, the third bracket 3C has an attachment side engagement portion that is configured with a through hole 20C1 and a recessed portion 20C2. Both sides of the attachment portion 11C are bent in the direction opposite to the attachment surface 12C to form ribs.

[0043] The center of the through hole 13C is formed on the central axis in the width direction of the mounting surface 12C (the left-right direction in FIG. 6(a)). The end face of the mounting surface 12C opposite the leg portion 10C is formed in an arc shape. Both side surfaces of the mounting surface 12C are formed in a straight line, and the ends of the leg portions 10C on both sides are located on the opposite side of the leg portion 10C from the center of the through hole 13C.

[0044] The hole 20C1 and recess 20C2, which are the mounting-side engaging portions, are each provided outside the range of the bearing surface 15C indicated by the two-dot chain line. The hole 20C1, which constitutes the mounting-side engaging portion, is formed in a position different from the holes 20A and 20B, which are the mounting-side engaging portions of the brackets 3A and 3B. Furthermore, the hole 20C1 and recess 20C2, which are the mounting-side engaging portions, are formed so as not to protrude outward from the outer peripheral surface of the mounting portion 11C.

[0045] The recess 20C2 is formed in the center of the width of the mounting surface 12C. The recess 20C2 is formed so that the ribs formed on both sides of the mounting portion 11C do not interfere with the jig 18C, and the mounting surface 22C of the jig 18C is formed in a shape corresponding to the mounting surface 12C so that it can be in close contact with the mounting surface 12C including the recess 20C2.

[0046] The third bracket 3C is formed by pressing a metal plate material, integrally forming a leg portion 10C and a mounting portion 11C, and forming ribs on both sides of the mounting portion 11C.

[0047] The fourth bracket 3D will now be described.

[0048] As shown in FIG. 7, the fourth bracket 3D has an attachment side engaging portion that is configured with a recessed recess 20D1 and a notch 20D2.

[0049] The center of the through hole 13D is formed on the central axis in the width direction of the mounting surface 12D (the left-right direction in FIG. 7(a)). The end face of the mounting surface 12D opposite the leg portion 10D is formed in an arc shape. Both side surfaces of the mounting surface 12D are formed in a straight line, and the ends of the leg portions 10D on both surfaces are located on the opposite side of the leg portion 10D from the center of the through hole 13D.

[0050] The recessed recess 20D1 and the notch 20D2, which are the attachment side engaging portions, are each provided outside the range of the bearing surface 15D indicated by the two-dot chain line.

[0051] The recess 20D1 that constitutes the mounting-side engaging portion is formed to have a different shape from the recess 20C that constitutes the mounting-side engaging portion of the third bracket 3C. Also, the notch 20D2 that constitutes the mounting-side engaging portion is formed on the side of the mounting surface 12D.

[0052] Moreover, the recess 20D1 and the notch 20D2, which are the attachment side engaging portion, are formed so as not to protrude outward from the outer peripheral surface of the attachment portion 11D.

[0053] The position of the notch 20D2 can be formed at any position outside the range of the seat surface 15D. The mounting surface 22D of the jig 18D is formed in a shape corresponding to the mounting surface 12D of the fourth bracket 3D so that it can be in close contact with the mounting surface 12D including the recess 20D1 of the fourth bracket 3D.

[0054] The fourth bracket 3D is formed by pressing a metal plate material to integrally form a leg portion 10D and a mounting portion 11D.

[0055] The fifth bracket 3E will now be described.

[0056] As shown in FIG. 8, the fifth bracket 3E has an attachment side engaging portion that is configured with two notches 20E1 and 20E2.

[0057] The center of the through hole 13E is formed on the central axis in the width direction (left-right direction in FIG. 8(a)) of the mounting surface 12E. The notches 20E1 and 20E2, which are the mounting side engagement portions, are each provided outside the range of the bearing surface 15E indicated by the two-dot chain line.

[0058] The notches 20E1 and 20E2 that constitute the mounting-side engagement portion are formed on the side of the mounting surface 12E. The positions of the notches 20E1 and 20E2 can be formed at any position as long as they are outside the range of the seat surface 15E. Furthermore, the notches 20E1 and 20E2 that constitute the mounting-side engagement portion are formed so as not to protrude outward from the outer peripheral surface of the mounting portion 11E.

[0059] The mounting surface 22E of the jig 18E is formed in a shape corresponding to the mounting surface 12E of the fifth bracket 3E so that it can be in close contact with the mounting surface 12E of the fifth bracket 3E.

[0060] The fifth bracket 3E is formed by bending a metal plate material to integrally form a leg portion 10E and a mounting portion 11E.

[0061] The sixth bracket 3F will now be described.

[0062] As shown in FIG. 9, the sixth bracket 3F has an attachment side engaging portion that is configured with two notches 20F1 and 20F2.

[0063] The center of the through hole 13F is formed on the central axis in the width direction (left-right direction in FIG. 9(a)) of the mounting surface 12F. The notches 20F1 and 20F2, which are the mounting side engagement portions, are each provided outside the range of the bearing surface 15F indicated by the two-dot chain line.

[0064] The notches 20F1 and 20F2 that constitute the mounting-side engagement portions are formed on the side of the mounting surface 12F. The positions of the notches 20F1 and 20F2 can be formed in any position as long as they are outside the range of the seat surface 15E and are different from the same positions as the notches 20E1 and 20E2 of the fifth bracket 3E. Furthermore, the notches 20F1 and 20F2 that constitute the mounting-side engagement portions are formed so as not to protrude outward from the outer peripheral surface of the mounting portion 11F.

[0065] The mounting surface 22F of the jig 18F is formed in a shape corresponding to the mounting surface 12F of the sixth bracket 3F so that it can come into close contact with the mounting surface 12F of the sixth bracket 3F.

[0066] The sixth bracket 3F is formed by bending a metal plate material to integrally form a leg portion 10F and a mounting portion 11F.

[0067] In the above brackets 3A to 3E, a projection nut with an internal thread was used as the first screw member 16A to 16E, and a bolt with an external thread was used as the second screw member, but in the sixth bracket 3F, a projection bolt with an external thread was used as the first screw member 16F, and a nut with an internal thread was used as the second screw member.

[0068] The jig 18F has jig-side engaging portions 19A to 19F (note that the jig-side engaging portions 19B to 19F are not shown) and insertion pins 21A to 21F (note that the insertion pins 21B to 21F are not shown). The brackets 3A to 3F can be attached to the jigs 18A to 18F by inserting the insertion pins 21A to 21F into the through holes 13A to 13F and the first screw members 16A to 16F of the brackets 3A to 3F and by engaging the jig-side engaging portions 19A to 19F with the mounting-side engaging portions 20A to 20F of the brackets 3A to 3F. The mounting surfaces 12A to 12F of the brackets 3A to 3F can be attached so that they are in close contact with the mounting surfaces 22A to 22F (mounting surfaces 22B to 22F are not shown) of each jig 18A to 18F, and the attached state can be maintained by magnets (not shown).

[0069] Like brackets 3A and 3B, holes 20A and 20B, which are the mounting side engagement parts, can be provided at any position outside the range of bearing surfaces 15A and 15B of mounting surfaces 12A and 12B, and the number of holes 20A and 20B may be one or more.

[0070] As with brackets 3D, 3E, and 3F, the notches 20D2, 20E1, 20E2, 20F1, and 20F2 that constitute the mounting-side engagement portions 20D, 20E, and 20F can be provided at any position outside the range of the bearing surfaces 15D, 15E, and 15F of the mounting surfaces 12D, 12E, and 12F, and the number of notches may be one or more. When multiple notches are formed, they may be provided on only one side or both sides of the mounting surface 12D.

[0071] The number of brackets attached to the exhaust system component 2 can be set arbitrarily as long as it is plural.

[0072] As shown in the above brackets 3A to 3F, the mounting side engagement portions 20A to 20F are composed of one or a combination of holes 20A, 20B1, 20C1 drilled in the mounting surfaces 12A to 12F, recesses 20B2, 20C2, 20D1 recessed from the mounting surfaces 12A to 12F, notches 20D2, 20E1, 20E2, 20F1, 20F2 formed in the mounting surfaces 12A to 12F, convex portions, and protruding portions.

[0073] In addition to the above brackets 3A to 3F, for example, as shown in FIG. 10, bracket 3G may have an attachment-side engaging portion formed of a protrusion 20G1 and a recess 20G2, and the hole 20B1, which is the attachment-side engaging portion of second bracket 3B, may be replaced with the protrusion 20G1. The protrusion 20G1 and the recess 20G2 are provided outside the range of seat surface 15G. The protrusion 20G1 is formed to protrude from the mounting surface 12G in the direction opposite to the exhaust-system component 2. Furthermore, the attachment-side engaging portions, i.e., the protrusion 20G1 and the recess 20G2, are formed so as not to protrude outward from the outer peripheral surface of mounting portion 11G. However, since no attached member is present in this area, there is no interference between the attached member and the protrusion 20G1.

[0074] 11, the mounting-side engaging portion may be configured with a through-hole 20H1 and two notches 20H2 and 20H3. The hole 20H1 and the notches 20H2 and 20H3 are provided outside the range of the seat surface 15H. The hole 20H1 and the notches 20H2 and 20H3, which are the mounting-side engaging portion, are formed so as not to protrude outward from the outer peripheral surface of the mounting portion 11H.

[0075] 12, the mounting side engagement portion is configured with a recessed recess 20I1, a notch 20I2, and a protrusion 20I3. The fourth bracket 3D has a protrusion 20I3 that protrudes outward from the side surface of the mounting surface 12I.

[0076] In addition, each bracket is set so that no two brackets in a set for mounting one mounted member have the same combination of type, shape, number, and position of the mounting-side engaging portion. This allows each jig to mount only the corresponding bracket and fix it in the correct position on the exhaust system part 2 by welding or the like.

[0077] In this way, forming the attachment side engaging portions differently for each bracket functions as a mistake prevention measure.

[0078] Furthermore, as described above, the mounting-side engaging portion is configured by combining one or more of the following: holes, recesses, notches, convex portions, and protrusions, so the mounting-side engaging portion can be configured in a simple shape and can be manufactured at low cost. Furthermore, since there are countless combinations of types, shapes, numbers, and positions of mounting-side engaging portions, if the brackets used on the production line are configured so that no two mounting-side engaging portions are the same, it is possible to prevent incorrect assembly of products with different part numbers and also function as an identification ID. [Explanation of symbols]

[0079] 1. Exhaust system component mounting structure 2. Exhaust system parts 3A~3I bracket 10A~10I Legs 11A~11I Mounting part 13A~13I Through hole 12A~12I Mounting surface 15A~15I Seat 16A to 16I First screw-fitting member 18A~18I Jig 19A~19I Jig side engaging part 20A~20I Mounting side engagement part

Claims

1. A bracket that is fixed to an exhaust system component and used to attach a component to be attached, The exhaust system component has a leg portion that is fixed to the exhaust system component and a mounting portion for mounting the mounted component, a through hole is drilled in a mounting surface of the mounting portion on the exhaust system component side, and a seat surface is provided on the mounting surface so as to be coaxial with an axis of the through hole; a first screw member fixed to a surface of the mounting portion opposite to the mounting surface so as to be coaxial with an axis of the through hole; A bracket characterized in that a mounting-side engaging portion that engages with a jig-side engaging portion of a jig is provided on a portion of the mounting portion excluding the seat surface.

2. 2. The bracket according to claim 1, wherein the mounting side engaging portion is one or a combination of a hole drilled in the mounting surface, a recess recessed from the mounting surface, and a notch formed in the mounting surface, and the mounting portion engages with the jig side engaging portion when held by a jig.

3. In a mounting structure for an exhaust system component, a plurality of brackets are fixed to an exhaust system component, and a mounted component is mounted to the brackets, The bracket has a leg portion that is fixed to the exhaust system component and a mounting portion for mounting the mounted component, a through hole is drilled in a mounting surface of the mounting portion on the exhaust system component side, and a seat surface is provided on the mounting surface so as to be coaxial with an axis of the through hole; a first screw member fixed to a surface of the mounting portion opposite to the mounting surface so as to be coaxial with an axis of the through hole; a mounting-side engaging portion that engages with a jig-side engaging portion of a jig is provided on a portion of the mounting portion excluding the seat surface; An exhaust system component mounting structure characterized in that the mounting side engaging portion of one bracket differs from the mounting side engaging portions of the other brackets in terms of combination of type, shape, number and position.

Images