JP6610882B2 - Roll rod assembly structure of vehicle - Google Patents

Description

  The present invention relates to a roll rod assembly structure for a vehicle in which a roll rod for suppressing a roll of a power unit mounted on the vehicle is assembled to a suspension cross member.

  In automobiles (vehicles), the suspension cross member (hereinafter simply referred to as the cross member) is the front lower part of the vehicle body, mostly a power unit (engine, etc.) in order to ensure the mounting accuracy of the front suspension and the support rigidity of the front suspension. ). Many cross members use a panel structure, for example, a box-shaped structure in which two panels, such as an upper panel and a lower panel, are joined to form a vertical wall portion in the vehicle front-rear direction and the panels are closed. .

  By the way, most of the support of the power unit uses a mount structure called a pendulum type (pendulum type). The pendulum type is supported by a pair of supporting fulcrum parts on both sides of the straight line passing through the center of gravity of the power unit above the inertial spindle of the horizontal power unit. It is a method of restraining with a roll rod arranged below.

  In many of these pendulum types, the end of the roll rod is supported by a cross member. That is, a roll rod generally has an eyeball-shaped bush portion (power unit side) that can be fastened to a power unit at one end, and an eyeball shape that has a larger outer diameter (outer shape) than the bush portion on the power unit side at the other end. The small bush portion on the power unit side is connected to the lower part of the power unit with a bolt member or the like. And the large diameter bush part by the side of a cross member is connected with a cross member by fixing members, such as a bolt member, and it has the structure which suppresses the roll of the power unit transmitted from a roll rod.

Usually, the roll rod is assembled integrally with the cross member. That is, after the cross member is assembled to the vehicle body, the roll rod protruding from the cross member is connected to the power unit.
The roll rod is generally assembled to the cross member by a structure in which the bush portion on the cross member side is fixed inside the cross member, and the bush portion on the power unit side is protruded from the cross member to the outside.

  Specifically, as disclosed in Citation 1, a through-hole having a size that allows the bush portion on the cross member side to be inserted into the cross member is provided on the front surface of the cross member, that is, the vertical wall portion adjacent to the power unit. . In addition, a mounting seat is provided inside the cross member to install the inserted bushing on the cross member side, the bushing on the cross member side is fixed inside the cross member, and the bushing portion on the power unit side protrudes from the through hole to the outside. It is set as such.

Japanese Patent Laying-Open No. 2015-63278

  However, if the structure is such that the end of the roll rod inserted into the cross member is fixed within the cross member, the through hole requires a relatively large opening area through which the large-diameter bush portion can penetrate. The rigidity and strength of the cross member are likely to be lowered by the through hole. In particular, the cross member requires the rigidity and strength of the front part closer to the power unit than the rear part away from the power unit (because it is close to the front tire and the input from the front tire is large), but the size of the through hole is cross. It greatly affects the rigidity and strength of members.

Moreover, since the opening of the through-hole becomes wider as the through-hole becomes larger, foreign matters such as mud and snow that soar when an automobile travels on an unpaved road or a snowy road can easily enter the inside of the cross member. .
For this reason, it is conceivable to separately use a reinforcing member to compensate for the decrease in rigidity and strength, or separately use a cover member to suppress the intrusion of foreign matter. However, the structure of the cross member becomes complicated, and the weight and cost are reduced. Will increase.

  Accordingly, an object of the present invention is to provide a roll rod assembly structure for a vehicle that has a simple structure and can suppress a decrease in rigidity and strength of a suspension cross member due to a through-hole and intrusion of foreign matter.

  According to the aspect of the present invention, the peripheral portion of the upper panel and the peripheral portion of the lower panel are joined, and the first vertical wall portion is provided on one side in the vehicle front-rear direction and the second vertical wall portion is provided on the other side in the vehicle front-rear direction. Suspension cross member formed in a cross-sectional shape, extending in the vehicle front-rear direction, has a unit-side attachment that can be fastened to a power unit mounted on the vehicle at one end, and can be fastened to the suspension cross member at the other end And a roll rod assembly structure for a vehicle having a cross member side mounting portion having a larger outer shape than the unit side mounting portion, and a roll rod for connecting the power unit and the suspension cross member. A first through hole provided in the first vertical wall portion of the member, the unit side mounting portion is penetrable, and the cross member side mounting portion is formed in a size incapable of penetrating; A second through hole provided in the second vertical wall portion of the suspension cross member so as to face the first through hole, and formed so as to allow the unit side mounting portion and the cross member side mounting portion to pass therethrough; The roll rod is provided at the opening edge of the through hole, and the fixing member to which the cross member side mounting portion is fixed. The roll rod has the unit side mounting portion at the head and the second through wall of the second vertical wall portion of the suspension cross member. The cross member side mounting portion is inserted into the first through hole of the first vertical wall portion from the hole, and the unit side mounting portion protrudes forward of the suspension cross member 1 from the first through hole. It was assumed to be fixed in the fixing part by being interposed in the hole.

  According to the present invention, the structure in which the unit side mounting portion of the roll rod is penetrated from one side of the suspension cross member at the front rear side of the vehicle, that is, from the second vertical wall portion on the opposite side to the power unit to the first vertical wall portion on the power unit side. By doing so, only the unit-side mounting portion with a small outer shape protrudes from the first through hole on the front side in the insertion direction of the roll rod, and the opening area of the first through hole can be made relatively small. Thereby, the fall of the rigidity and intensity | strength of the 1st vertical wall part by the side of a power unit with a large input from a tire can be suppressed as much as possible, and the fall of the rigidity and intensity | strength of a suspension cross member can be suppressed. On the other hand, the second vertical wall portion of the suspension cross member is reduced in rigidity and strength by the second through hole, but the cross member side mounting portion is interposed in the second through hole on the rear side in the insertion direction of the roll rod. Therefore, the first through hole is reinforced by using the cross member side mounting portion as a reinforcing member. For this reason, it is possible to suppress a decrease in rigidity and strength of the cross member due to the second through hole.

  That is, the rigidity of the second vertical wall due to the second through hole is reduced by adopting an assembly structure in which the suspension cross member is penetrated from the opposite side of the power unit and the roll rod end is fixed to the opening edge of the second through hole. In addition, the opening area of the first through hole of the first vertical wall portion on the power unit side that is greatly affected by the input from the tire is reduced as much as possible to suppress a decrease in rigidity of the first vertical wall portion. As a result, a decrease in rigidity and strength of the suspension cross member due to the first and second through holes penetrating the roll rod can be suppressed, and as a result, the rigidity and strength of the entire suspension cross member can be improved. And since the 1st through-hole of a 1st vertical wall part can be made small, it can suppress that foreign materials, such as mud and snow, penetrate | invade from a 1st through-hole inside a suspension cross member.

  Further, since the overall length of the roll rod can be set long, the deflection angle of the roll rod can be suppressed. Therefore, twisting of the cross member side mounting portion can be suppressed, and vibration and noise transmitted from the roll rod to the suspension cross member can be effectively suppressed.

The top view which shows the roll rod assembly | attachment structure used as the aspect which concerns on one Embodiment of this invention with a roll rod and a suspension cross member. The perspective view which shows the roll rod and suspension cross member seen from the arrow A of the vehicle front side in FIG. The perspective view which shows the roll rod and suspension cross member seen from the arrow B of the vehicle rear side in FIG. The disassembled perspective view which decomposed | disassembled the roll rod and the suspension cross member. (A)-(c) is sectional drawing explaining a roll rod being penetrated to a suspension cross member and installing it, (d) is a side view which shows the cross member side attaching part which the installation completed.

Hereinafter, the present invention will be described based on an embodiment shown in FIGS.
FIG. 1 shows a plan view of the entire roll rod assembly structure of an automobile (vehicle), and FIGS. 2 and 3 show different directions of the roll rod assembly structure in the vehicle front-rear direction (vehicle front side, vehicle rear side). The perspective view seen from is shown. In FIG. 1, an arrow F indicates the front of the vehicle, and an arrow R indicates the rear of the vehicle.

The roll rod structure will be described with reference to FIGS. In the figure, 1 indicates a suspension cross member (hereinafter simply referred to as a cross member), and 21 indicates a roll rod.
That is, the cross member 1 is a component that is arranged in the vehicle width direction at the lower part of the front part of the vehicle body (not shown). The cross member 1 has a closed cross-sectional structure made of sheet metal. Specifically, as shown in FIGS. 1 to 3, the cross member 1 includes, for example, a peripheral portion of a cross-sectional hat-shaped upper panel 3 having bifurcated portions on both sides in the vehicle width direction, and a cross-sectional hat shape that is substantially rectangular. The peripheral part of the lower panel 5 is joined (for example, welded) to each other, and is formed of a box-shaped part having a closed cross section with a gap between the panels. Of these, the longitudinal panel portion 3a on the vehicle front side of the upper panel 3 and the longitudinal panel portion 5a on the vehicle front side of the lower panel 5 following the panel portion 3a are arranged on the vehicle front-rear direction front side of the cross member 1. A front wall portion 4a (corresponding to the first vertical wall portion of the present application), a vertical panel portion 3b on the vehicle rear side of the upper panel 3 on the opposite side, and a vehicle rear side of the lower panel 5 following the panel portion 3b The vertical panel portion 5b forms a rear wall portion 4b (corresponding to the second vertical wall portion of the present application) disposed on the rear side in the vehicle front-rear direction of the cross member 1. The front wall portion 4a and the rear wall portion 4b face each other with the internal space of the cross member 1 interposed therebetween.

  A pair of fixing bracket portions 7 and a pair of fixing portions 8 that are assembled to a pair of left and right side members (not shown) constituting the vehicle body are provided on both sides in the vehicle width direction of the cross member 1. That is, the entire cross member 1 is, for example, a horizontally mounted power unit 10 (illustrated by a two-dot chain line in FIG. 1: composed of an engine mounted on the front portion of the vehicle body) via the fixed bracket portion 7 and the fixed portion 8. It is installed at the lower rear (not shown) of the adjacent rear body. A pair of lower arms 11 (illustrated by a two-dot chain line in FIG. 1: a support component for a front tire) and the like, which are suspension members, are assembled to both sides of the cross member 1 in the vehicle width direction.

The cross member 1 is assembled with a roll rod 21 which is a component for suppressing the roll of the power unit 10 in the vehicle front-rear direction.
The roll rod 21 is a component for forming a pendulum type (pendulum type) mount structure for mounting the power unit 10 on a vehicle body, for example. In the present embodiment, both sides of the lateral power unit 10 in the vehicle width direction are supported on the vehicle body side by a pair of support fulcrum portions (not shown), and the roll rod 21 disposed at the lower portion of the power unit 10 is connected to the cross member 1. Therefore, the movement of the roll in the vehicle front-rear direction of the power unit 10 centering on the support fulcrum is suppressed. That is, the roll rod 21 is a member that extends in the vehicle front-rear direction and connects the power unit 10 and the cross member 1.

This roll rod 21 is assembled to the cross member 1 in advance in a cantilever posture extending along the vehicle longitudinal direction as shown in FIGS.
The details of the assembly structure of the roll rod 21 are shown in the perspective view of FIG.
In the assembly structure of the roll rod 21, the roll rod 21 is inserted from one side of the cross member 1 in the vehicle front-rear direction (the side opposite to the side on which the power unit 10 is disposed) and penetrated along the vehicle front-rear direction. Is used.

  Before describing the structure, the structure of the roll rod 21 will be described. As shown in FIGS. 1 to 4, as is well known, the roll rod 21 includes a mounting portion 13 (corresponding to the unit-side mounting portion of the present application) provided at one end and a mounting portion 15 (corresponding to the present application) provided at the other end. And a hook-like connecting member 17 that connects the mounting portions 13 and 15 to each other. Of these, the mounting portion 13 is a cylindrical bush portion that can be fastened to the power unit 10, specifically, a bracket 10a protruding from the lower portion of the power unit 10 to the rear side in the vehicle front-rear direction (illustrated by a two-dot line in FIGS. 1 and 5). : Constituting the power unit 10) and a cylindrical bush portion 13a that can be fastened. The attachment portion 15 includes a cylindrical bush portion that can be fastened to the cross member 1, specifically, a cylindrical bush portion 15a having an outer diameter (outer shape) larger than that of the bush portion 13a. The roll rod 21 has a small end part outline (D1) on the side assembled to the power unit 10 and a large end part outline (D2) on the side assembled to the cross member 1 (FIG. 4; D1). <D2) The structure is advantageous for suppressing rolls, noise, and vibration from the power unit 10.

  Next, the assembly structure of the roll rod 21 will be described. Reference numeral 23 in the figure is a square front opening provided in, for example, the vertical panel portion 5a (vehicle front side) of the lower panel 5 on the side where the power unit 10 is disposed, and 25 is opposed to the front opening 23. Thus, the rectangular rear opening is provided in the vertical panel portion 5b (rear side) of the lower panel 5 on the opposite side of the power unit 10. Both the front opening 23 and the rear opening 25 are arranged at positions corresponding to the bracket 10 a of the power unit 10. Among these, the front opening 23 has an opening area of a minimum area necessary for penetrating the bush portion 13a (small) of the roll rod 21. The rear opening 25 has an opening area of the minimum area necessary for penetrating the bush portion 15a (large) of the roll rod 21. With these front and rear openings 23, 25, only the attachment portion 13 (small) of the roll rod 21 can penetrate the front wall portion 4a (power unit 10 side) of the cross member 1, and the attachment portion 15 (large) penetrates. An unacceptable front through hole 27a (corresponding to the first through hole of the present application) is configured, and the mounting portion 13 (small) and the mounting portion of the roll rod 21 are mounted on the rear wall portion 4b of the cross member 1 (on the side opposite to the power unit 10 side). Both of the portions 15 (large) constitute a rear through hole 27b (corresponding to the second through hole of the present application) through which the portion 15 (large) can penetrate.

  As shown in FIG. 4, the front and rear through holes 27a and 27b allow the roll rod 21 to pass through the inside of the cross member 1 only from the rear side of the cross member 1 (the side opposite to the side where the power unit 10 is disposed). I can plug it in. In other words, the bush portion 13a (mounting portion 13) of the roll rod 21 protrudes from the front through hole 27a (small) to the front of the cross member 1 by the front and rear through holes 27a, 27b and the internal space of the cross member 1, and the roll rod 21 A through passage 29 is formed through which the roll rod 21 can be inserted (inserted) until the bush portion 15a (attachment portion 15) is disposed (intervened) in the rear through hole 27b (large) (FIG. 5).

  A fixing portion 31 for fixing the bush portion 15a (attachment portion 15) interposed in the rear through hole 27b is provided at the opening edge of the rear through hole 27b (large) (corresponding to the fixing portion of the present application). . The fixing portion 31 has a pair of upper and lower installation seats 33 extending in parallel outward (rear side) from the upper and lower opening edge portions of the rear through hole 27b sandwiching the bush portion 15a, for example. The mounting seats 33 are each formed from a seat surface portion that overlaps the upper and lower ends of the bush portion 15a, specifically, the end of the inner cylinder 15b disposed at the center of the bush portion 15a. Further, the fixing portion 31 includes an overlapping mounting seat 33 and a fixing member, for example, a bolt member 35, which is inserted into the inner cylinder 15b of the bush portion 15a, and the bush portion 15a is positioned on the mounting seat 33 of the rear through hole 27b. After that, the bush member 15 a, that is, the mounting portion 15 is fixed between the installation seats 33 by inserting and fastening the bolt member 35. Of course, the installation seat 33 is provided with a bolt insertion hole 33a (FIG. 4).

  In the present embodiment, the upper flange portion 3c is provided along the lower end edge of the vertical panel portion 3b on the vehicle rear side of the upper panel 3, and the upper edge of the vertical panel portion 5b on the vehicle rear side of the lower panel 5 is provided. A lower flange portion 5c to be joined to the upper flange portion 3c is provided along with the upper flange portion 3c and the lower flange portion 5c surrounds the opening edge of the rear through hole 27b, that is, the periphery of the rear opening 25. It is reinforced with. The pair of upper and lower installation seats 33 are composed of the upper flange portion 3c and the lower flange portion 5c. That is, the upper and lower flange portions 3c and 5c for joining the vertical panel portion 3b on the vehicle rear side of the upper panel 3 and the vertical panel portion 5b on the vehicle rear side of the lower panel 5 are rear through holes 27b (rear openings 25). A pair of upper and lower installation seats 33 of the fixing portion 31 are formed in the upper and lower parts separated from each other. Thereby, the bush part 15a (attachment part 15) of the roll rod 21 is fixed to the upper and lower edges of the rear through hole 27b reinforced by being surrounded by the upper flange part 3c and the lower flange part 5c.

FIGS. 5A to 5D show a process of incorporating the roll rod 21 into the cross member 1.
Explaining this process, first, as shown in FIG. 5 (a), with the bush portion 13a (small) at the top, from the rear through hole 27b (rear opening 25) of the cross member 1 toward the front through hole 27a, Insert the roll rod 21. As shown in FIG. 5B, the roll rod 21 has a distal end side bush portion 13a protruding forward from the front through hole 27a, that is, the front outer side of the cross member 1, and a proximal end side bush portion 15a extending from the rear through hole. The insertion work is performed until it is arranged between the installation seats 33 of 27b.

  Thereafter, as shown in FIG. 5 (c), the bolt member 35 is inserted from the bolt insertion hole 33a of one installation seat 33 toward the bolt insertion hole 33a of the other installation seat 33 through the inner cylinder 15b of the bush portion 15a. Let Then, by fastening with the nut member 36 (FIGS. 2, 3 and 5) in a state where the inner cylinder 15b is sandwiched, the bush portion 15a (mounting portion 15) having a large outer shape (large diameter) is fastened. 5) is fixed in a state where it occupies between the mounting seats 33, that is, between the opening edges of the rear through hole 27b, as shown in FIG. As a result, the roll rod 21 is assembled to the cross member 1 in a posture in which the bush portion 13 (small) on the tip side protrudes forward (from the power unit 10 side) from the front through hole 27a (small).

  That is, in the roll rod assembly structure of this embodiment, the roll rod 21 is inserted into the cross member 1 from the rear through hole 27b toward the front through hole 27a with the bush portion 13a (mounting portion 13) having a small outer shape at the head. The bush portion 15a (mounting portion 15) forms the fixing portion 31 of the rear through hole 27b (large) with the bush portion 13a (mounting portion 13) protruding from the front through hole 27a (small) to the outside of the cross member 1. It is arranged (intervened) between a pair of upper and lower mounting seats 33 and fixed.

  Due to the assembly structure of the roll rod 21, only the small-diameter bush portion 13 a (attachment portion 13) fastened to the power unit 10 protrudes from the rear through hole 27 b on the front side of the roll rod 21 in the insertion direction. A small opening area is required as compared with the case where the diameter bush portion 15a (mounting portion 15) passes. For this reason, the fall of the rigidity and intensity | strength of the front wall part 4a by the front through-hole 27a is suppressed as much as possible. In particular, the cross member portion on the power unit 10 side (front side) having the front through hole 27a is effective because it is a portion that requires rigidity and strength in response to input from a front tire (not shown).

  Further, the cross member 1 is provided with the rear through hole 27b in the rear wall portion 4b, so that the rigidity and strength are reduced. However, the bush portion 15a (attachment portion 15) fastened to the cross member 1 is It is interposed between the pair of mounting seats 33 in the rear through hole 27b on the rear side in the insertion direction, and is fixed by a bolt member 35 (fixing member) that passes through the mounting seat 33 and the bush portion 15a (mounting portion 15) in that state. Therefore, the fixed structure α (FIG. 5: the bolt member 35, the mounting seat 33, and the bush portion 15a) occupying between the opening edges of the rear through hole 27b serves as a reinforcing member to reinforce the rear through hole 27b, and the rear through hole A decrease in rigidity and strength of the cross member 1 due to the hole 27b is suppressed.

  Further, the rear through-hole 27b is surrounded by an upper flange portion 3c and a lower flange portion 5c that join the upper panel 3 and the lower panel 5 at the periphery (opening edge), and the upper flange portion 3c and the lower flange portion 5c Since the mounting seat 33 is configured, the periphery of the rear through-hole 27b is reinforced to more reliably suppress a decrease in rigidity and strength of the cross member 1, and the bush portion 15a (mounting portion 15) of the roll rod 21 can be prevented. Fixing can be strengthened.

  As described above, the rigidity of the rear wall 4b due to the rear through-hole 27b is reduced by the simple fixing structure in which the roll rod 21 is penetrated from the opposite side of the power unit 10 of the cross member 1 to fix the base end of the roll rod 21. While suppressing, the opening area of the front through-hole 27a of the front wall part 4a on the power unit 10 side that is greatly affected by the input from the front tire is made as small as possible to suppress a decrease in rigidity of the front wall part 4a. Accordingly, it is possible to suppress a decrease in rigidity and strength of the cross member 1 due to the front and rear through holes 27a and 27b, and as a result, it is possible to improve the rigidity and strength of the entire cross member 1. Moreover, since the front through hole 27a on the power unit side can be small, for example, when this structure is adopted for the front suspension cross member, foreign matters such as mud and snow enter the cross member 1 from the front through hole 27a. Is suppressed. In particular, since the front through hole 27a is formed with an opening having a minimum necessary area that allows the bush portion 13a (mounting portion 13) to pass therethrough, it is possible not only to suppress a decrease in the rigidity strength of the cross member 1, but also to greatly intrude foreign matter. To contribute. Even if foreign matter enters from the front through hole 27a, it is discharged to the outside through the rear through hole 27b.

  Moreover, since the roll rod 21 has a structure in which the cross member 1 passes through and is fixed to the rear through hole 27b of the rear wall portion 4b, the overall length of the roll rod 21 can be set relatively long. Therefore, the deflection angle of the roll rod 21 is suppressed, and the twist of the bush portion 15a is suppressed, so that vibration and noise transmitted from the roll rod 21 to the cross member 1 can be effectively suppressed.

  It should be noted that each configuration and combination thereof in the above-described embodiment is an example, and the addition, omission, replacement, and other changes of the configuration are possible without departing from the spirit of the present invention. Needless to say. Further, the present invention is not limited to the above-described embodiment, and needless to say, is limited only by the “claims”.

DESCRIPTION OF SYMBOLS 1 Suspension cross member 3 Upper panel 3c Upper flange part 4a Front wall part (1st vertical wall part)
4b Rear wall (second vertical wall)
5 Lower panel 5c Lower flange 10 Power unit 13 Mounting part (Unit side mounting part)
15 Mounting part (Cross member side mounting part)
21 Roll rod 27a Front through hole (first through hole)
27b Rear through hole (second through hole)
29 Penetration path (rod penetration path)
31 Fixing part 33 Installation seat 35 Bolt member (fixing member)

Claims (4)

The peripheral part of the upper panel and the peripheral part of the lower panel are joined, and the first vertical wall part is provided on one side in the vehicle front-rear direction and the second vertical wall part is provided on the other side in the vehicle front-rear direction, thereby forming a closed cross-section. Suspension cross member,
Extending in the vehicle front-rear direction, has a unit-side mounting portion that can be fastened to a power unit mounted on the vehicle at one end, can be fastened to the suspension cross member at the other end, and more than the unit-side mounting A roll rod for connecting the power unit and the suspension cross member having a cross member side mounting portion of a large outer shape;
An assembly structure of a roll rod of a vehicle having
A first through hole provided in the first vertical wall portion of the suspension cross member, wherein the unit side mounting portion is piercable and the cross member side mounting portion is not pierced;
A second through hole provided in the second vertical wall portion of the suspension cross member so as to face the first through hole, and having a size that allows the unit side mounting portion and the cross member side mounting portion to pass therethrough. When,
A fixing portion provided at an opening edge of the second through-hole, to which the cross member-side mounting portion is fixed;
The roll rod is inserted from the second through-hole of the second vertical wall portion of the suspension cross member toward the first through-hole of the first vertical wall portion with the unit-side mounting portion at the head, The cross member side mounting portion is interposed in the second through hole and fixed to the fixing portion with a side mounting portion protruding from the first through hole toward the front of the suspension cross member 1. Roll rod assembly structure for vehicles The fixing part is
A pair of mounting seats provided at the opening edge of the second through-hole and formed so as to overlap the cross-member-side mounting portion;
The roll rod assembly for a vehicle according to claim 1, further comprising: a fixing member that is inserted through the mounting seat and the cross member side mounting portion and fixes the cross member side mounting portion between the mounting seats. Attached structure. An upper flange portion and a lower flange portion joined to each other are provided on the second vertical wall portion side of the peripheral portion of the upper panel and the peripheral portion of the lower panel,
The periphery of the opening edge portion of the second through hole of the second vertical wall portion is surrounded by the upper flange portion and the lower flange portion,
The roll rod assembly structure for a vehicle according to claim 2, wherein the installation seat includes the upper flange portion and the lower flange portion.   The first through hole of the first vertical wall portion is configured by an opening having a minimum area necessary for the cross member side mounting portion to pass therethrough, and the second through hole of the second vertical wall portion is formed by the unit. The roll rod assembly structure for a vehicle according to any one of claims 1 to 3, comprising an opening having a minimum area necessary for the side attachment portion to pass therethrough.

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