Mudguard mounting structure

The mudguard mounting structure addresses assembly challenges by using a bracket with a retaining member that suppresses bolt rotation and tilt, ensuring consistent alignment with bolt insertion holes for improved ease of assembly.

JP2026087044APending Publication Date: 2026-05-27ISUZU MOTORS LTD

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
ISUZU MOTORS LTD
Filing Date
2024-11-15
Publication Date
2026-05-27

AI Technical Summary

Technical Problem

The existing mudguard attachment structures face challenges in ease of assembly due to varying amounts of tilt in bolt shafts when positioned vertically or horizontally, leading to misalignment with bolt insertion holes.

Method used

A mudguard mounting structure that includes a bracket with a retaining member that holds the bolt, featuring a rotation-suppressing part to prevent bolt head rotation and a tilt-suppressing part to limit bolt shaft tilt to a predetermined amount, ensuring consistent alignment with bolt insertion holes.

Benefits of technology

The structure improves assembly ease by ensuring consistent alignment of bolt shafts with bolt insertion holes, regardless of vertical or horizontal positioning, thereby simplifying the attachment process.

✦ Generated by Eureka AI based on patent content.

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Abstract

This provides a mudguard mounting structure that improves ease of assembly. [Solution] The mudguard mounting structure is a mudguard mounting structure that is attached to a bracket on the vehicle side using bolts, wherein the bracket includes a retaining member for holding the bolts, and the retaining member has a rotation suppression part that suppresses rotation around the axis of the bolt head when the mudguard is fastened to the bracket, and a tilt suppression part that suppresses the downward tilt of the bolt axis with respect to the horizontal plane to a predetermined amount when the mudguard is not fastened to the bracket.
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Description

Technical Field

[0001] The present disclosure relates to an attachment structure of a mudguard.

Background Art

[0002] A mudguard is attached to a vehicle to protect the vehicle body from objects lifted by the rotation of the tires.

[0003] For example, Patent Document 1 describes an attachment structure of a mudguard attached to a chassis frame via a bracket.

[0004] Also, for example, Patent Document 2 describes an attachment structure of a mudguard attached to a bumper by bolts and nuts.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0006] In the attachment structure of the mudguard described in Patent Document 2 above, bolt insertion holes are provided in the mudguard. A holding member is arranged on the bumper. The nut is held by the holding member so that its position can be adjusted. That is, the holding member is a member that holds the nut, which is a fastener, so that its position can be adjusted. By making the nut position-adjustable by the holding member, alignment between the bolt insertion holes of the mudguard, which is the mating part, and the nut becomes possible.

[0007] The retaining member may also be a member that holds the bolt, which is a fastener, in an adjustable position. In this case, the bolt can be positioned by the retaining member, which allows for alignment between the bolt insertion hole in the mudguard and the bolt.

[0008] If the retaining member is a member that holds the bolt in an adjustable position, for example, the bolt head has a rectangular parallelepiped shape. The retaining member abuts against the bolt head to prevent rotation of the bolt around its axis when the mudguard is fastened.

[0009] Figure 1 shows the vertically arranged bolt, retaining member, and bracket in the comparative example, viewed from the bolt tip side. Figure 2 shows the horizontally arranged bolt, retaining member, and bracket in the comparative example, viewed from the bolt tip side. When the bolt 7 is held by the retaining member 6, depending on the layout of, for example, a mudguard or the mounting part on the vehicle side to which the mudguard is attached, the bolt 7 may be arranged vertically so that the rectangular parallelepiped shape of the bolt head 7b is elongated vertically, as shown in Figure 1, or the bolt 7 may be arranged horizontally so that the rectangular parallelepiped shape of the bolt head 7b is elongated horizontally, as shown in Figure 2.

[0010] Figure 3 shows the amount of tilt of the vertically positioned bolt shaft in the comparative example. Figure 4 shows the amount of tilt of the horizontally positioned bolt shaft in the comparative example. Figures 3 and 4 show the bracket 5, retaining member 6, and bolt 7, respectively, with the mudguard omitted. In Figures 3 and 4, the gap between the bracket 5 and the retaining member 6 is set to the same dimension.

[0011] When the mudguard is not fastened, the shaft 7a of the bolt 7 passed through the through hole 5a is tilted downward relative to the horizontal direction, regardless of whether the bolt 7 is positioned vertically or horizontally. In Figure 3, the amount of tilt is shown as "δ1" and the tilt angle as "θ1". In Figure 4, the amount of tilt is shown as "δ2" and the tilt angle as "θ2". Here, "when not fastened" refers to the state in which the bolt 7 is inserted through the through hole 5a but the nut is not tightened.

[0012] As shown in Figure 3, when the bolt 7 is positioned vertically, the amount of tilt δ1 of the shaft 7a is determined by three positions: the position of the shaft 7a that abuts against the edge of the through hole 5a, the position of the head 7b that abuts against the retaining member 6 (position of the short side of the head 7b), and the position of the head 7b that abuts against the bracket 5 (position of the short side of the head 7b). Since each of the positions of the short side of the head 7b abuts against the bracket 5 and the retaining member 6, the tilt angle θ1 is relatively small. As a result, the amount of tilt δ1 is relatively small.

[0013] As shown in Figure 4, when the bolt 7 is positioned horizontally, the amount of tilt δ2 of the shaft 7a is determined by three positions: the position of the shaft 7a that abuts against the edge of the through hole 5a, the position of the head 7b that abuts against the retaining member 6 (the position of the long side of the head 7b), and the position of the head 7b that abuts against the bracket 5 (the position of the long side of the head 7b). Since each of the long sides of the head 7b abuts against the bracket 5 and the retaining member 6, the tilt angle θ2 is relatively large. As a result, the amount of tilt δ2 is relatively large.

[0014] As a result, the amount of tilt δ1 of the shaft 7a of bolt 7 when bolt 7 is positioned vertically may differ from the amount of tilt δ2 of the shaft 7a of bolt 7 when bolt 7 is positioned horizontally (δ1 < δ2). Due to this difference in the amount of tilt of the shaft 7a of bolt 7, when a vertically positioned bolt is aligned with the bolt insertion hole of the mudguard, the tip position of the shaft of a horizontally positioned bolt may not align with the position of the bolt insertion hole. On the other hand, when a horizontally positioned bolt is aligned with the bolt insertion hole, the tip position of the shaft of a vertically positioned bolt may not align with the position of the bolt insertion hole. This may reduce the ease of assembly of the mudguard.

[0015] The purpose of this disclosure is to provide a mudguard mounting structure that can improve ease of assembly. [Means for solving the problem]

[0016] To achieve the above objectives, the mudguard mounting structure in this disclosure is: A mounting structure for mudguards that is attached to a bracket on the vehicle side using bolts, The bracket includes a retaining member for holding the bolt, The aforementioned retaining member is The mudguard is fastened to the bracket, and a rotation-retaining part is provided to suppress rotation of the bolt head around its axis during fastening. A tilt-preventing part that, in the unfastened state before the mudguard is fastened to the bracket, limits the downward tilt of the bolt axis relative to the horizontal plane to a predetermined amount, It holds. [Effects of the Invention]

[0017] According to this disclosure, assembly can be improved. [Brief explanation of the drawing]

[0018] [Figure 1]FIG. 1 is a view of a vertically arranged bolt, a holding member, and a bracket in a comparative example as seen from the tip side of the bolt. [Figure 2] FIG. 2 is a view of a horizontally arranged bolt, a holding member, and a bracket in a comparative example as seen from the tip side of the bolt. [Figure 3] FIG. 3 is a view showing the amount of deflection of the axis of a vertically arranged bolt in a comparative example. [Figure 4] FIG. 4 is a view showing the amount of deflection of the axis of a horizontally arranged bolt in a comparative example. [Figure 5] FIG. 5 is an exploded perspective view showing an attachment structure of a mudguard in an embodiment of the present disclosure. [Figure 6] FIG. 6 is a perspective view showing a vertically arranged bolt, a holding member, and a bracket in an embodiment of the present disclosure. [Figure 7] FIG. 7 is a perspective view showing a horizontally arranged bolt, a holding member, and a bracket in an embodiment of the present disclosure. [Figure 8] FIG. 8 is a perspective view showing a bolt in an embodiment of the present disclosure. [Figure 9] FIG. 9 is a perspective view showing a holding member in an embodiment of the present disclosure. [Figure 10] FIG. 10 is a view of a holding member that holds a horizontally arranged bolt in an embodiment of the present disclosure as seen from the tip side of the bolt. [Figure 11] FIG. 11 is a cross-section taken along line XI-XI of FIG. 10. [Figure 12] FIG. 12 is a view of a holding member that holds a horizontally arranged bolt in a modified example of the present embodiment as seen from the tip side of the bolt. [Figure 13] FIG. 13 is a cross-sectional view taken along line XIII-XIII of FIG. 12. [Figure 14] FIG. 14 is a view of a holding member that holds a vertically arranged bolt in a modified example of the present embodiment as seen from the tip side of the bolt. [Figure 15] FIG. 15 is a cross-sectional view taken along line XV-XV of FIG. 14. [Modes for carrying out the invention]

[0019] The embodiments of this disclosure will be described below with reference to the drawings. Figure 5 is an exploded perspective view showing the mounting structure of a mudguard in an embodiment of the present disclosure. Figure 5 shows a connecting member 10, a stay 20, a mudguard 30, and a splash pad 40. The stay 20 is attached to a side rail (not shown) that constitutes the frame of a truck or the like via the connecting member 10. In this embodiment, the mudguard 30 is attached to the stay 20 side together with the splash pad 40 by bolts 70 and nuts 80. The mudguard 30 has a bolt insertion hole 31 through which the bolt 70 is inserted when it is attached to the vehicle. The splash pad 40 also has a bolt insertion hole 41 through which the bolt 70 is inserted when it is attached.

[0020] As shown in Figure 5, the stay 20 has a frame-shaped frame body 20a. The frame body 20a has an upper frame portion 21, a lower frame portion 22, an outer frame portion 23 in the vehicle width direction, and an inner frame portion 24 in the vehicle width direction.

[0021] (Brackets 52A, 52B, 52C) Bracket 52A is positioned on the lower frame portion 22. Bracket 52B is positioned on the outer frame portion 23 in the vehicle width direction. Bracket 52C is positioned on the inner frame portion 24 in the vehicle width direction. Note that brackets 52A and 52B are the same bracket. In the following descriptions of brackets 52A and 52B, bracket 52A will be described as a representative example, and a different configuration of bracket 52B will be described, while the description of the same configuration as bracket 52A will be omitted.

[0022] Figure 6 is a perspective view showing a bracket, etc. As shown in Figure 6, the bracket 52A includes a plate portion 53 having a roughly rectangular outer shape. The plate portion 53 has a stepped portion 54 located in the center in the longitudinal direction, a one-sided wall portion 55 located to one side in the longitudinal direction of the stepped portion 54, and a other-sided wall portion 56 located to the other side in the longitudinal direction of the stepped portion 54. Note that the plate portion 53 may be a horizontally elongated bracket.

[0023] As shown in Figures 5 and 6, the bracket 52A, which is positioned on the lower frame 22, is positioned on the lower frame 22 with one side wall 55 facing downwards and the other side wall 56 facing upwards. The one side wall 55 is fixed to the lower frame 22. The other side wall 56 extends along the mudguard 30. The other side wall 56 has a through hole 56H through which the shaft 71 of the bolt 70 passes.

[0024] As shown in Figure 5, the bracket 52B, which is positioned on the outer frame portion 23 in the vehicle width direction, is positioned on the outer frame portion 23 in the vehicle width direction with one side wall portion 55 facing downwards and the other side wall portion 56 facing upwards. The one side wall portion 55 is fixed to the outer frame portion 23 in the vehicle width direction. The other side wall portion 56 extends along the mudguard 30. The other side wall portion 56 has a through hole 56H through which the shaft 71 of the bolt 70 passes.

[0025] Figure 7 is a perspective view showing the bracket, etc. As shown in Figures 5 and 7, the bracket 52C has an L-shaped bent plate portion 57. The plate portion 57 has a bent portion 57a, one side wall portion 58 extending from the bent portion 57a ​​toward the inner frame portion 24 in the vehicle width direction, and the other side wall portion 59 extending from the bent portion 57a ​​toward the mudguard 30. The one side wall portion 58 is fixed toward the inner frame portion 24 in the vehicle width direction. The other side wall portion 59 extends along the mudguard 30. The other side wall portion 59 has a through hole 59H through which the shaft 71 of the bolt 70 passes. The diameters of the through hole 56H (see Figure 6) in the other side wall portion 56 and the through hole 59H in the other side wall portion 59 are the same. In the following description, the other side wall portion 56 and the other side wall portion 59 may be collectively referred to as the other side wall portion WP. Furthermore, through holes 56H and 59H are sometimes collectively referred to as through hole TH. The other side wall portion WP corresponds to the "second wall portion" in this disclosure.

[0026] (Retaining member 60, bolt 70) As shown in Figures 5, 6, and 7, a retaining member 60A is provided on bracket 52A, which is located on the lower frame portion 22. A retaining member 60B is provided on bracket 52B, which is located on the outer frame portion 23 in the vehicle width direction. A retaining member 60C is provided on bracket 52C, which is located on the inner frame portion 24 in the vehicle width direction. Note that retaining members 60A, 60B, and 60C are the same retaining member. In the following description, retaining members 60A, 60B, and 60C may be collectively referred to as retaining member 60. Also, brackets 52A, 52B, and 52C may be collectively referred to as bracket 52.

[0027] Figure 8 is a perspective view showing a bolt in an embodiment of the present disclosure. Figure 9 is a perspective view showing a retaining member in an embodiment of the present disclosure. As shown in Figure 8, the bolt 70 has a shaft 71 and a head 72. The shaft 71 has a threaded portion on which a nut 80 can be screwed. The head 72 has a rectangular parallelepiped shape. In the following description, when the bolt 70 is arranged so that the rectangular parallelepiped shape is elongated vertically, it is referred to as "vertical arrangement of the bolt" or "vertical configuration". Also, when the bolt 70 is arranged so that the rectangular parallelepiped shape is elongated horizontally, it is referred to as "horizontal arrangement of the bolt" or "horizontal configuration".

[0028] As shown in Figure 9, the retaining member 60 has an elongated plate portion 61. The plate portion 61 has a stepped portion 62 located in the center in the longitudinal direction, a one-side plate portion 63 located on one side of the stepped portion 62 in the longitudinal direction, and a other-side plate portion 64 located on the other side of the stepped portion 62 in the longitudinal direction. The one-side plate portion 63 is fixed to the bracket 52.

[0029] The other side plate portion 64 has a U-shaped cross-section including a bottom wall portion 65 and two side wall portions 66 that face each other with the bottom wall portion 65 in between. The bottom wall portion 65 is positioned opposite the other side wall portion WP with a predetermined gap between them. The head 72 of the bolt 70 is held in the predetermined gap between the bottom wall portion 65 and the other side wall portion WP.

[0030] The side wall sections 66 are erected from both side edges of the bottom wall section 65 toward the other side wall section WP. The side wall sections 66 have rotation-restricting parts 67 that suppress the rotation of the bolt head 72 around its axis when the mudguard 30 is fastened. By the bolt head 72 contacting each of the side wall sections 66 which act as rotation-restricting parts 67, rotation of the bolt 70 in both the rightward and leftward directions is suppressed (see Figure 10).

[0031] As shown in Figure 5, three bolts 70 are held by the retaining member 60. In addition to the bolts 70 held by the retaining member 60, one bolt 70 is fixed at a position above the bracket 52B which is located on the outer frame portion 23 in the vehicle width direction.

[0032] (Vertical arrangement of bolts, horizontal arrangement of bolts) Next, the vertical and horizontal arrangements of bolts will be described with reference to Figures 10 and 11. Figure 10 is a view of a retaining member holding a horizontally arranged bolt in an embodiment of this disclosure, as seen from the bolt tip side. Figure 11 is a cross-sectional view taken along line XI-XI in Figure 10.

[0033] As shown in Figure 5, the bolts 70 held by the retaining members 60 located on brackets 52A and 52B are positioned vertically. The bolts 70 held by the retaining member 60 located on bracket 52C are positioned horizontally.

[0034] In the comparative example described above, the amount of tilt δ1 of the shaft 7a of bolt 7 when bolt 7 is positioned vertically (see Figure 3) may differ from the amount of tilt δ2 of the shaft 7a of bolt 7 when bolt 7 is positioned horizontally (see Figure 4) (δ1 < δ2). Due to this difference in the amount of tilt of the shaft 7a of bolt 7, when the shaft 7a of a vertically positioned bolt 7 is aligned with the bolt insertion hole of the mudguard, the tip position of the shaft 7a of a horizontally positioned bolt 7 may not align with the position of the bolt insertion hole. On the other hand, when the shaft 7a of a horizontally positioned bolt 7 is aligned with the bolt insertion hole, the tip position of the shaft 7a of a vertically positioned bolt 70 may not align with the position of the bolt insertion hole. This may reduce the ease of assembly of the mudguard. The reason for the above is that the width γ1 of the gap between the retaining member 6 and the bracket 5 in the vertical position is the same as the width γ2 of the gap between the retaining member 6 and the bracket 5 in the horizontal position (γ1 = γ2).

[0035] Therefore, in the embodiment of this disclosure, the width γ3 of the gap between the bottom wall portion 65 and the other side wall portion WP in a horizontal arrangement is set to be smaller than the width γ1 of the gap between the bottom wall portion and the other side wall portion in a vertical arrangement (the same as the width γ1 shown in Figure 3) (γ1 > γ3). Specifically, the width γ3 is set so that the amount of tilt δ1 shown in Figure 3 is the same as the amount of tilt δ3 of the shaft 71 of the bolt 70 when the bolt 70 is arranged horizontally (see Figure 11) (δ1 = δ3). In other words, the bottom wall portion 65, together with the other side wall portion WP, constitutes a tilt suppression portion 68 that suppresses the tilt of the shaft 71 of the bolt 70 to a predetermined amount of tilt.

[0036] As a result, whether the bolt 70 is positioned horizontally or vertically, the amount of tilt of the bolt 70's shaft 71 is the same (δ1=δ3), making it easy to align the tip position of the bolt 7's shaft 7a with the bolt insertion hole 31 of the mudguard 30. This improves the ease of assembly of the mudguard 30.

[0037] The mudguard mounting structure in the above embodiment is a mudguard mounting structure that is attached to a bracket 52 on the vehicle side using bolts 70, wherein the bracket 52 includes a retaining member 60 that holds the bolts 70, and the retaining member 60 has a rotation suppression part 67 that suppresses rotation around the axis of the head 72 of the bolt 70 when the mudguard 30 is fastened, and a tilt suppression part 68 that suppresses the downward tilt of the axis 71 of the bolt 70 with respect to the horizontal plane to a predetermined amount when the mudguard 30 is not fastened.

[0038] With the above configuration, the tilt of the bolt shaft when not fastened can be limited to a predetermined amount, allowing the position of the tip of the bolt shaft to be aligned with the position of the bolt insertion hole in the mudguard, thereby improving the ease of assembly of the mudguard.

[0039] Furthermore, the mudguard mounting structure in the above embodiment includes a plurality of bolts 70 for fastening the mudguard 30, and a plurality of holding members 60 that hold each of the plurality of bolts 70 such that the amount of tilt of each of the shafts 71 of the plurality of bolts 70 is equal to each other. This makes it possible to align the positions of each of the plurality of bolt insertion holes 31 in the mudguard 30 with the positions of the tips of the shafts 71 of each of the plurality of bolts 70 in parallel, thereby improving the ease of assembly of the mudguard 30 compared to when the alignment is performed sequentially.

[0040] Furthermore, in the mudguard mounting structure of the above embodiment, the retaining member 60 has a rotation suppression part 67 that abuts against the head 72 to suppress the rotation of the head 72 when fastened, and a tilt suppression part 68 that abuts against the head 72 and the shaft 71 respectively to suppress the tilt of the shaft 71 to a predetermined amount when not fastened. As a result, the rotation suppression part 67 abuts against the head 72 when fastened, thereby suppressing the rotation of the head 72, making it possible to fasten the bracket 52 and the mudguard 30 with the bolt 70. In addition, the tilt suppression part 68 abuts against the head 72 and the shaft 71 respectively, thereby suppressing the tilt of the shaft 71 to a predetermined amount, so the position of the tip of the shaft 71 of the bolt 70 can be aligned with the position of the bolt insertion hole 31 of the mudguard 30, making it possible to improve the ease of assembly of the mudguard 30.

[0041] Furthermore, in the mudguard mounting structure of the above embodiment, the retaining member 60 has a U-shaped cross-sectional shape including a bottom wall portion 65 and side wall portions 66, and each of the side wall portions constitutes a rotation suppression portion 67 that abuts against the head portion 72 to suppress the rotation of the head portion 72 when fastening. As a result, each of the side wall portions 66 abuts against the head portion 72, which suppresses the rotation of the head portion 72 when fastening, making it possible to fasten the bracket 52 and the mudguard 30 with a bolt 70.

[0042] Furthermore, in the mudguard mounting structure of the above embodiment, the tilt prevention portion 68 has a side wall portion WP that is positioned opposite to the bottom wall portion 65 at a predetermined distance, and the side wall portion WP has a through hole TH through which the shaft 71 passes, and the edge of the through hole TH, together with the bottom wall portion 65 that abuts the head portion 72, abuts the shaft 71 in such a way that the tilt of the shaft 71 is suppressed to a predetermined amount. As a result, the shaft 71 of the bolt 70 abuts against the edge of the through hole TH and the head portion 71 abuts against the bottom wall portion 65, so that the tilt of the shaft 71 can be suppressed to a predetermined amount, the position of the tip of the shaft 71 of the bolt 70 can be aligned with the position of the bolt insertion hole 31 of the mudguard 30, and the ease of assembly of the mudguard 30 can be improved.

[0043] Furthermore, in the mudguard mounting structure of the above embodiment, the head 72 has a rectangular parallelepiped shape, and the predetermined spacing is set so that the amount of tilt of the shaft 71 of the bolt 70 when the bolt 70 is arranged vertically so that the rectangular parallelepiped shape is vertically elongated is equal to the amount of tilt of the shaft 71 of the bolt 70 when the bolt 70 is arranged horizontally so that the rectangular parallelepiped shape is horizontally elongated. As a result, the amount of tilt of the shaft 71 of the bolt 70 is equal whether the bolt 70 is arranged vertically or horizontally, so that the position of the tip of the shaft 71 of the bolt 70 can be aligned with the position of the bolt insertion hole 31 of the mudguard 30 regardless of how the bolt 70 is arranged, thereby improving the ease of assembly of the mudguard 30.

[0044] Furthermore, in the mudguard mounting structure of the above embodiment, the bracket 52 has a second side wall portion WP (second wall portion). As a result, the second side wall portion WP becomes a tilt-preventing portion 68 that the head portion 72 abuts against when not fastened, making it possible to suppress the tilt of the shaft 71 to a predetermined amount. As a result, since there is no need to separately provide the tilt-preventing portion 68 on parts other than the retaining member 60 and the bracket 52, the number of parts can be reduced.

[0045] (modified version) In addition, the mudguard mounting structure in the modified embodiment may further include a protrusion CP that protrudes from at least one side of the bottom wall 65 and the other side wall WP (second wall) to the other side of the bottom wall 65 and the other side wall WP, and the protrusion CP may be positioned so that it does not abut the head 72 of the bolt 70 when it is vertically positioned, but abuts the head 72 of the bolt 70 when it is horizontally positioned, so that the amount of tilt of the shaft 71 of the bolt 70 when it is vertically positioned and the amount of tilt of the shaft 71 of the bolt 70 when it is horizontally positioned are equal to each other.

[0046] Figure 12 is a view of a retaining member holding a horizontally positioned bolt in a modified example of this embodiment, as seen from the bolt's tip side. Figure 13 is a cross-sectional view taken along line XIII-XIII in Figure 12. Figure 14 is a view of a retaining member holding a vertically positioned bolt in a modified example of this embodiment, as seen from the bolt's tip side. Figure 15 is a cross-sectional view taken along line XV-XV in Figure 14. As shown in Figures 12 and 14, four protrusions CP are arranged on the bottom wall portion 65. Each of the four protrusions CP is positioned to contact the head 72 when the bolt 70 is positioned horizontally (see Figure 13). Figure 13 shows the gap γ3 (<γ1) and the tilt amount δ3 (=δ1) between the apex position of the protrusion CP and one side wall portion WP. Furthermore, each of the four protrusions CP is positioned to contact the head 72 when the bolt 70 is positioned horizontally, but not to contact the head 72 when the bolt 70 is positioned vertically (see Figure 15).

[0047] By arranging the four protrusions CP on the bottom wall portion 65 as described above, and using the same retaining member 60 and the same bolt 70, it is possible to adjust the position of the tip of the shaft 71 of the bolt 70 to the position of the bolt insertion hole 31 of the mudguard 30, regardless of how the bolt 70 is positioned, by either bringing the head 72 into contact with the protrusions CP or not, depending on the position of the bolt 70.

[0048] In the above modified example, the protrusion CP is placed on the bottom wall 65, but it may also be placed on the other side wall WP (second wall) which is positioned opposite the bottom wall 65. Alternatively, the protrusion CP may be placed on both the bottom wall 65 and the other side wall WP.

[0049] Furthermore, in the mudguard mounting structure of the above modified example, each of the side wall portions 66 may abut against each of the ends of the rectangular parallelepiped shape to suppress the rotation of the head portion 72 when fastening. As a result, the rotation of the head portion 72 is suppressed when fastening because each of the side wall portions 66 abuts against the head portion 72, making it possible to fasten the bracket 52 and the mudguard 30 with the bolt 70.

[0050] In the above embodiment, the mounting structure for the mudguard shows the head 72 having a rectangular parallelepiped shape, but this disclosure is not limited to this, and the head 72 may have a rod-shaped form.

[0051] Furthermore, the embodiments described above are merely examples of how the Disclosure may be implemented, and the technical scope of the Disclosure should not be limited by them. In other words, the Disclosure can be implemented in various ways without departing from its essence or its main features. [Industrial applicability]

[0052] This disclosure is particularly useful for vehicles equipped with a mudguard mounting structure that requires improved ease of assembly. [Explanation of symbols]

[0053] CP protrusion TH through hole WP Other side wall 5 brackets 5a through hole 6. Retaining member 7 volts 7a axis 7b head 10 Connecting member 20 Stay 20a frame 21 Upper frame section 22 Lower frame section 23 Outer frame section in the vehicle width direction 24 Inner frame section in the vehicle width direction 30 Mudguards 31 Bolt insertion hole 31 40 Splash Pads 41 Bolt insertion holes 52 brackets 52A Bracket 52B Bracket 52C Bracket 53 Plate section 54 Stepped section 55 One side wall 56 Other side wall section 56H through hole 57 Plate section 58 One side wall 59 Other side wall section 59H through hole 60 Retaining member 61 Board part 62 Step part 63 One side plate part 64 Other side plate part 65 Bottom wall section 66 Both wall sections 67 Rotation restraint unit 68 Fall prevention unit 70 volts 71 axis 72 Head 80 nuts

Claims

1. A mounting structure for mudguards that is attached to a bracket on the vehicle side using bolts, The bracket includes a retaining member for holding the bolt, The aforementioned retaining member is The mudguard is fastened to the bracket, and a rotation-retaining part is provided to suppress rotation of the bolt head around its axis during fastening. A tilt-preventing part that, in the unfastened state before the mudguard is fastened to the bracket, limits the downward tilt of the bolt axis relative to the horizontal plane to a predetermined amount, Having, The mounting structure for mudguards.

2. Multiple bolts for fastening the mudguard, Multiple holding members are provided to hold each of the multiple bolts such that the amount of downward tilt of each of the bolts' shafts relative to the horizontal plane is equal to each other. Equipped with, The mounting structure for the mudguard according to claim 1.

3. The aforementioned retaining member is A rotation-restricting part that contacts the head to suppress the rotation of the head when fastening, In the disengaged state, the tilt-preventing parts that contact the head and the shaft respectively to limit the tilt of the shaft to a predetermined amount, Having, The mounting structure for the mudguard according to claim 1.

4. The retaining member has a U-shaped cross-sectional shape including a bottom wall and both side walls, Each of the aforementioned side wall portions constitutes a rotation-restricting portion that abuts against the head to suppress the rotation of the head when fastened. The mounting structure for the mudguard according to claim 1.

5. The tipping prevention part has a second wall portion that is positioned opposite to the bottom wall portion at a predetermined distance, The second wall portion has a through hole through which the shaft passes, The edge of the through hole, together with the bottom wall portion that abuts the head, abuts the shaft in such a way that it limits the tilt of the shaft to a predetermined amount. The mounting structure for the mudguard according to claim 4.

6. The head has a rectangular parallelepiped shape, The predetermined interval is set such that the amount of tilt of the bolt's shaft when the bolt is vertically arranged so that the rectangular parallelepiped shape is elongated vertically is equal to the amount of tilt of the bolt's shaft when the bolt is horizontally arranged so that the rectangular parallelepiped shape is elongated horizontally. The mounting structure for the mudguard according to claim 5.

7. The system further comprises a projection extending from at least one side of the bottom wall and the second wall towards the other side of the bottom wall and the second wall, The protrusion is positioned such that it does not contact the head of the bolt when it is positioned vertically, but contacts the head of the bolt when it is positioned horizontally, so that the amount of tilt of the shaft of the bolt when it is positioned vertically and the amount of tilt of the shaft of the bolt when it is positioned horizontally are equal to each other. The mounting structure for the mudguard according to claim 6.

8. Each of the aforementioned side wall portions abuts against each of the ends of the rectangular parallelepiped shape to suppress the rotation of the head when fastened. The mounting structure for the mudguard according to claim 6.

9. The bracket has the second wall portion, The mounting structure for the mudguard according to claim 5.

10. The head having the rectangular parallelepiped shape includes a head having the rod shape, The mounting structure for the mudguard according to claim 6.