JP2019206273A - Strut type suspension - Google Patents

Abstract

To form a large adjustment range of a camber angle in a strut type suspension in which a hat shaped upper attachment bracket is fixed to a damper attachment part provided at a vehicle body and an upper end attachment part of a damper is attached to the upper attachment bracket.SOLUTION: In a strut type suspension 100, an upper end attachment part 40 of a damper 10 is attached to a top surface part 32 at an interior of a cylindrical body 31 of an upper attachment bracket 30 in a manner that an attachment position, at which the upper end attachment part 40 is attached to the top surface part 32, can be adjusted in a vehicle width direction. A cutout window 36 is formed on a side wall 31F oriented in the vehicle width direction in the cylindrical body 31 of the upper attachment bracket 30. An upper part of the damper 10 whose position was adjusted in the vehicle width direction can enter into the cutout window 36.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a strut suspension, and more particularly to a strut suspension that can take a wide adjustment range of a camber angle.

  As a strut suspension, as described in Patent Document 1, an upper mounting bracket is fixed to a damper mounting portion provided on a vehicle body, an upper end mounting portion of the damper is mounted to the upper mounting bracket, and a lower end mounting portion of the damper is a knuckle. Some are attached and the knuckle has a wheel pivotally supported.

  In such a strut-type suspension, the upper mounting bracket is a hat-shaped body made of a cylindrical body, and the cylindrical body of the upper mounting bracket is fitted into a mounting hole of a damper mounting portion provided in the vehicle body, The mounted portion provided on the lower end side of the body is fixed to the damper mounting portion of the vehicle body, and the upper end mounting portion of the damper is inserted into the cylindrical body and attached to the top surface portion. Can be increased. That is, the upper end mounting portion of the damper attached to the knuckle is inserted into the cylindrical body of the upper mounting bracket, and the upper portion of the damper is disposed higher than the damper mounting portion provided in the vehicle body. The overall length of the lower part or the upper part can be increased. Thereby, the extension stroke of a damper can be taken large and the freedom degree of the setting of the spring constant and damping force of a coil spring can be raised.

JP 2001-301435 A

  Conventionally, when adjusting the camber angle of a wheel in a strut suspension in which the upper end mounting portion of the damper is mounted on the hat type upper mounting bracket, the upper end mounting portion of the damper is mounted on the top surface portion of the upper mounting bracket. It is possible to adjust the position in the vehicle width direction.

  However, the upper part of the damper inserted into the cylindrical body of the upper mounting bracket is surrounded by the side wall of the cylindrical body all around. Therefore, the adjustment amount of the camber angle performed by adjusting the position of the upper end mounting portion of the damper in the vehicle width direction is limited by the upper part of the damper colliding with the inner peripheral surface of the side wall of the cylindrical body, and a large camber angle adjustment amount. Cannot be secured.

  In addition, the upper mounting bracket is formed of a press-formed cylindrical body, the cylindrical body is fitted into a mounting hole of a damper mounting portion provided in the vehicle body, and is provided in a flange shape provided on the lower end side of the cylindrical body When the mounted portion is fixed to the damper mounting portion, the presence of a large roundness provided at the intersection of the outer peripheral surface of the side wall of the cylindrical body and the flange-shaped mounted portion reduces the outer diameter of the cylindrical body to the vehicle. The diameter is considerably smaller than the mounting hole diameter of the body. This reduces the inner diameter of the cylindrical body, and the upper part of the damper collides with the inner peripheral surface of the side wall of the cylindrical body at the time of adjusting the camber angle as described above, resulting in a large camber angle. Making adjustment amount difficult.

  In addition, the upper mounting bracket is made of a press-molded ceiling-shaped body, and the upper end mounting portion of the damper is mounted on the top surface portion of the upper mounting bracket to adjust the mounting position in the vehicle width direction. When the mounting portion is moved in the vehicle width direction along the top surface portion, the presence of a large roundness provided at the intersection of the inner peripheral surface of the side wall and the bottom surface of the top surface portion of the cylindrical body of the upper mounting bracket The movable amount of the upper end mounting portion is limited to a small size, making it difficult to ensure a large camber angle adjustment amount.

  An object of the present invention is to increase a camber angle adjustment range in a strut suspension in which a hat-type upper mounting bracket is fixed to a damper mounting portion provided on a vehicle body, and an upper end mounting portion of a damper is mounted on the upper mounting bracket. There is to take.

  According to the first aspect of the present invention, a hat-type upper mounting bracket is fixed to a damper mounting portion provided on the vehicle body, an upper end mounting portion of the damper is mounted to the upper mounting bracket, and a lower end mounting portion of the damper is mounted to the knuckle. The wheel is pivotally supported by the knuckle, the hat-type upper mounting bracket is provided with an opening at the lower end, and the top is provided with a top surface, and the cylindrical body is inserted into the mounting hole of the damper mounting portion. A strut suspension in which a mounted portion provided on a lower end side of the cylindrical body is fixed to a damper mounting portion, and an upper end mounting portion of the damper is inserted into the cylindrical body and attached to a top surface portion thereof. The upper end mounting portion of the damper is attached to the top surface portion so that the mounting position of the damper relative to the top surface portion can be adjusted in the vehicle width direction inside the cylindrical body of the upper mounting bracket. Kicking are formed notch window on the side wall facing the vehicle width direction, the upper portion of the damper which is located adjusted in the vehicle width direction is obtained so as to be enable invade 該切 Ketsumado.

  The invention according to claim 2 is the invention according to claim 1, wherein the notch window is formed on a side wall facing the inside of the vehicle in the vehicle width direction in the tubular body of the upper mounting bracket. .

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the upper end mounting portion of the damper is provided on a mounting base portion that is mounted on the lower surface of the top surface portion of the upper mounting bracket and on the top surface portion of the upper mounting bracket. And a mounting protrusion that is inserted through a long hole portion that is elongated in the vehicle width direction. A reference mark is attached to the mounting protrusion at the upper end mounting portion of the damper, and the length of the upper mounting bracket is long. A camber angle display scale is provided along the edge of the hole, and when the upper end mounting portion of the damper is adjusted to the mounting position in the vehicle width direction with respect to the upper mounting bracket, the damper angle display scale corresponding to the reference mark is used as the damper. The camber angle after the position adjustment in the vehicle width direction is made readable.

  According to a fourth aspect of the present invention, in the third aspect of the invention, the upper end mounting portion of the damper has a pillow ball into which a connecting rod that is integrated with the damper cylinder is inserted, and the pillow ball is held from above and below. And upper and lower ball housings that can be fastened together with the top surface portion of the upper mounting bracket. The upper ball housing is made of a plate-like body having a perforated annular projection protruding therefrom, and the lower ball The housing is formed of a plate-like body having a perforated portion, and a pillow ball is accommodated in the hole of the perforated annular convex portion of the upper ball housing. The pillow ball is held between the upper and lower ball housings, and is In a state where the ball housing is mounted on the top surface of the upper mounting bracket, both plate-like bodies of the upper and lower ball housings constitute the mounting base, and the upper ball housing The upper perforated ring-shaped convex portion constitutes the mounting convex portion, and the upper ball housing passes through the hole center of the perforated annular convex portion and has a diameter along the vehicle width direction on the side facing the notch window of the upper mounting bracket. The distance that the small overhanging contour part makes with the hole center of the perforated annular convex part, and the distance that the large overhanging contour part opposite to the small overhanging contour part makes with the hole center of the perforated annular convex part The lower ball housing has a small overhanging contour on the side facing the notch window of the upper mounting bracket on the diameter along the vehicle width direction through the hole center of the perforated part. The distance formed with respect to the hole center is set to be smaller than the distance between the large projecting contour portion on the opposite side to the small projecting contour portion and the hole center of the perforated portion. Contour and large overhanging contour Radius of curvature is obtained as formed by substantially equally set the radius of curvature of the inner peripheral surface of the side wall of the cylindrical body of the upper mounting bracket.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the hat-type upper mounting bracket further includes a flange plate-like attached portion that is inserted into the outer peripheral portion on the lower end side of the cylindrical body. The flange plate-like attached portion is welded to the cylindrical body on the lower surface side.

  The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the hat-type upper mounting bracket is formed as a cut-out cylindrical body, and the inner wall of the cylindrical body is formed. The peripheral surface and the lower surface of the top surface portion are orthogonal to each other.

(Claim 1)
(a) When adjusting the camber angle of the damper by adjusting the mounting position of the upper end mounting portion of the damper with respect to the top surface portion of the hat-type upper mounting bracket in the vehicle width direction, the damper whose position is adjusted in the vehicle width direction The upper portion of the upper mounting bracket can enter a notch window formed in a side wall facing the vehicle width direction of the cylindrical body of the upper mounting bracket.

  Therefore, the cylindrical body of the upper mounting bracket is fitted and fixed in the mounting hole of the damper mounting portion provided in the vehicle body, the thickness of the cylindrical body is t, and the outer periphery of the cylindrical body is the hole of the mounting hole. When the clearance in the radial direction with respect to the inner diameter is δ, the increase a in the position adjustment amount in the vehicle width direction of the upper end mounting portion of the damper enters the cutout window at the upper portion of the damper and further hits the inner diameter of the mounting hole. As compared with the case where the notch window is not formed, the distance is increased by a = t + δ on the mounting surface of the vehicle body. For example, if t = 3 mm and δ = 1 mm, a = 4 mm, and the camber angle increases by about 0.4 degrees, for example.

  If the mounting hole of the damper mounting portion provided in the vehicle body is enlarged to the clearance δ or more than the outer periphery of the cylindrical body in the upper mounting bracket, the position of the damper upper end mounting portion in the vehicle width direction The adjustment amount increases more greatly until the upper portion of the damper hits the hole inner diameter of the enlarged mounting hole.

(Claim 2)
(b) A negative camber angle (minus camber angle) in which the camber angle of the damper is inclined toward the inside of the vehicle when the cutout window is formed on a side wall facing the inside of the vehicle in the vehicle width direction of the cylindrical body of the upper mounting bracket. Will increase. An increase in the negative camber angle increases the tire grip and improves cornering performance (ease of bending).

(Claim 3)
(c) The length of the upper mounting bracket that corresponds to the reference mark on the mounting projection on the upper end mounting portion of the damper when the upper end mounting portion of the damper is adjusted in the mounting position in the vehicle width direction relative to the upper mounting bracket. By reading the camber angle display scale provided along the edge of the hole, the camber angle after adjusting the position of the upper end mounting portion of the damper in the vehicle width direction can be read.

(Claim 4)
(d) The upper and lower ball housings are located on the side facing the notch window of the upper mounting bracket on the diameter along the vehicle width direction through the hole center of the perforated annular projection or the hole center of the perforated part. The distance that the small overhanging contour portion forms with the perforated annular convex portion, or the hole center of the perforated portion, and the large overhanging contour portion opposite to the small overhanging contour portion is the perforated annular convex portion or hole. It was set to be smaller than the distance formed with respect to the hole center of the perforated part. And the curvature radius of the small overhanging outline part of each upper and lower ball housing and the large overhanging outline part shall be set to be substantially equal to the curvature radius of the inner peripheral surface of the side wall of the cylindrical body of the upper mounting bracket.

  Accordingly, when the upper end mounting portion of the damper sets the mounting position in the vehicle width direction with respect to the upper mounting bracket to the standard position, the large overhanging contour portions of the upper and lower ball housings are on the diameter of the cylindrical body of the upper mounting bracket. It is positioned on the inner peripheral surface opposite to the cutout window with almost no gap. On the other hand, when the upper end mounting portion of the damper adjusts the mounting position of the upper mounting bracket in the vehicle width direction to the maximum in the vehicle width direction and sets the camber angle of the wheel to the maximum camber angle, The overhanging contour portion is positioned on the inner peripheral surface around the notch window on the diameter of the cylindrical body of the upper mounting bracket with almost no gap. Therefore, the upper and lower ball housings constituting the upper end mounting portion of the damper are mounted on the cylindrical body so that the mounting position with respect to the top surface portion can be adjusted in the vehicle width direction inside the cylindrical body of the upper mounting bracket. The contour shape of each ball housing is as large as possible on the diameter along the vehicle width direction, and the upper end mounting portion of the damper is intended to stabilize the mounting structure with respect to the upper mounting bracket. Strength can be secured.

(Claim 5)
(e) The hat-type upper mounting bracket has a flange plate-shaped mounting portion that is inserted into the outer peripheral portion on the lower end side of the cylindrical body, and the flange plate-shaped mounting portion is cylindrical on the lower surface side thereof. Welded to the body. Therefore, when the cylindrical body is fitted into the mounting hole of the damper mounting portion provided in the vehicle body, and the flange-shaped mounting portion provided on the lower end side of the cylindrical body is fixed to the damper mounting portion, the cylindrical body The outer peripheral surface of the side wall of the body and the flange-shaped attached portion are substantially perpendicular to each other, and the outer shape of the cylindrical body can be made substantially equal to the diameter of the mounting hole of the vehicle body. This increases the inner diameter of the cylindrical body, and when the camber angle is adjusted, the amount of movement of the damper until the upper part of the damper collides with the inner peripheral surface of the side wall of the cylindrical body is increased. In addition, it is easy to secure a large camber angle adjustment amount.

(Claim 6)
(f) The hat-shaped upper mounting bracket is formed by a machined cylindrical body. Therefore, when the upper end mounting portion moves in the vehicle width direction along the lower surface of the top surface portion in order to adjust the mounting position of the upper end mounting portion with respect to the top surface portion of the upper mounting bracket in the vehicle width direction, The inner peripheral surface of the side wall of the tubular body of the mounting bracket and the lower surface of the top surface portion are orthogonal to each other, increasing the movable amount of the upper end mounting portion of the damper and facilitating securing a large camber angle adjustment amount.

FIG. 1 is a front view showing a damper in a standard camber angle state. FIG. 2 is a cross-sectional view of the main part of FIG. FIG. 3 is a plan view of FIG. FIG. 4 is a front view showing the damper in the maximum camber angle state. FIG. 5 is a cross-sectional view of the main part of FIG. 6 is a plan view of FIG. FIG. 7 is a perspective view showing the upper mounting bracket to which the upper end mounting portion of the damper is mounted. FIG. 8 is a perspective view showing the upper mounting bracket with the upper end mounting portion of the damper removed. FIG. 9 is a sectional view showing the upper mounting bracket to which the upper end mounting portion of the damper is mounted. 10A and 10B show the upper ball housing, where FIG. 10A is a plan view and FIG. 10B is a cross-sectional view. FIG. 11 shows a lower ball housing, where (A) is a plan view and (B) is a cross-sectional view. FIG. 12 is a schematic view showing a strut suspension.

  The strut suspension 100 includes a damper 10 and a coil spring 20 as shown in FIG. The damper 10 has a piston rod 12 (not shown) that moves along with the expansion and contraction of the cylinder 11 inside the oil chamber formed by the expansion and contraction cylinder 11 composed of the upper and lower tubes 11A and 11B, and corresponds to the expansion and contraction speed. Generates a damping force. The coil spring 20 is interposed between an upper spring receiver 21 attached to the upper part of the damper 10 (upper tube 11A) and a lower spring receiver 22 attached to the lower part of the damper 10 (lower tube 11B). .

  In the strut suspension 100, a hat-type upper mounting bracket 30 is fixed to a damper mounting portion 2 provided on the vehicle body 1, an upper end mounting portion 40 of the damper 10 is mounted to the upper mounting bracket 30, and a lower end mounting portion of the damper 10. 11C is attached to the knuckle 3, and the wheel 4 (the front wheel in this embodiment) is pivotally supported by the knuckle 3. The knuckle 3 is connected to a steering gear box (not shown) via a tie rod (not shown), and a predetermined virtual kingpin shaft (a pillow ball 51 (to be described later on the upper end mounting portion 40) and a knuckle 3 according to the steering operation of the driver). And a ball joint 6 that connects the suspension arm 5 and a ball joint 6).

  As shown in FIGS. 1 to 9 (particularly FIG. 8), the hat-type upper mounting bracket 30 is formed as a cylindrical dome-shaped cylindrical body 31 having an opening 31A at the lower end and a top surface portion 32 at the upper end. At the lower end side of the cylindrical body 31, a mounted portion 33 (in this embodiment, a flange plate-shaped mounted portion provided at the lower end portion of the cylindrical body 31) is provided.

  The upper mounting bracket 30 is fitted into the inner diameter of the mounting hole 2A of the damper mounting portion 2 provided on the vehicle body 1 at the outer periphery of the cylindrical body 31 via a slight gap δ, and the mounted portion 33 is the damper mounting portion. 2 is attached to the periphery of the mounting hole 2A on the lower surface. The mounted portion 33 of the cylindrical body 31 is fixed to the damper mounting portion 2 by mounting bolts 34 that are inserted from the lower surface side of the vehicle body 1 into bolt insertion holes provided in the mounted portion 33. And the upper end attachment part 40 of the damper 10 is inserted in the inside of the cylindrical body 31, and is attached to the top | upper surface part 32. As shown in FIG.

  The upper end mounting portion 40 of the damper 10 is attached to the lower surface of the top surface portion 32 of the upper mounting bracket 30 and mounted in the vehicle width direction (in the vehicle body 1) provided at the center of the top surface portion 32 of the mounting bracket 30. And a mounting convex portion 42 that is inserted and disposed in a long hole portion 32A that is elongated in the vehicle width direction of the upper mounting bracket 30 in the fixed state.

  7 to 9, the upper end mounting portion 40 of the damper 10 is integrated with the cylinder 11 of the damper 10, and a pillow ball 51 into which the connecting rod 13 extending upward in the axial direction is inserted, The pillow ball 51 is held from above and below, and has upper and lower ball housings 52 and 53 that can be fastened together with the top surface portion 32 of the upper mounting bracket 30.

  The pillow ball 51 includes a ball 51A having a spherical outer peripheral surface, a bearing 51B having a spherical inner peripheral surface that is in sliding contact with the outer peripheral surface of the ball 51A, and between the lower end surface of the ball 51A and the upper spring receiver 21. The collar 14 is interposed, and the nut 15 is screwed into the connecting rod 13 and inserted through the central hole of the ball 51A.

  Further, the upper ball housing 52 is composed of a plate-like body 52P provided with a perforated annular projecting portion 52A, and the lower ball housing 53 is comprised of a plate-like body 53P comprising a perforated portion 53A. The pillow ball 51 (the bearing 51B of the pillow ball 51) is accommodated in the hole of the perforated annular protrusion 52A of the upper ball housing 52, and the pillow ball 51 (the bearing 51B of the pillow ball 51) is 53 is sandwiched and held from above and below to form a sub-assembly-like upper end mounting portion 40.

  Accordingly, the upper end mounting portion 40 of the damper 10 is inserted into the connecting rod 13 in a sub-assembly state held between the collar 14 inserted into the connecting rod 13 and the upper and lower ball housings 52 and 53. The balls 51 (the bearings 51 </ b> B of the pillow balls 51) are sequentially stacked on the upper spring receiver 21 around the connecting rod 13. Then, the pillow ball 51 and the collar 14 are clamped and fixed between the upper end surface of the upper spring receiver 21 around the connecting rod 13 by the nut 15 screwed to the connecting rod 13, and around the connecting rod 13 of the damper 10. Thus, the upper end mounting portion 40 is formed integrally.

  As shown in FIGS. 1 to 6, the upper end mounting portion 40 provided so as to be integrated around the connecting rod 13 of the damper 10 has upper and lower ball housings 52, 53 as the lower surface of the top surface portion 32 of the upper mounting bracket 30. The two plate-like bodies 52P and 53P of the upper and lower ball housings 52 and 53 constitute the mounting base 41 of the upper end mounting portion 40, and the annular convex portion 52A of the upper ball housing 52 is mounted. Constitutes the mounting convex portion 42 of the upper end mounting portion 40. At this time, long hole-like ball insertion holes 32B and 32B extending in the vehicle width direction are provided at the front and rear two positions sandwiching the central mounting hole 32A in the top surface portion 32 of the upper mounting bracket 30 from the direction perpendicular to the vehicle width. . The two front and rear fixing bolts 35, 35 are arranged so that the annular convex portion 52 </ b> A of the upper ball housing 52 is overlapped on the vehicle width in the elongated ball insertion holes 32 </ b> B of the top surface portion 32 and the bottom surface of the top surface portion 32. It is inserted in each bolt insertion hole 52B provided on both sides sandwiched in the right angle direction, and further provided on both sides in the vehicle width perpendicular direction sandwiching the perforated portion 53A in the lower ball housing 53 superimposed on the lower surface of the upper ball housing 52. The screw holes 53B are screwed. As a result, the upper end mounting portion 40 of the damper 10 is fastened and attached to the top surface portion 32 of the upper mounting bracket 30.

  However, in the strut suspension 100, the damper 10 can be adjusted from, for example, a normal camber angle of about +1 degree to a negative camber angle of about -4 degrees in order to improve straight running stability, cornering performance, and the like of the vehicle. Therefore, the following configurations (i) and (ii) are provided.

  (i) The upper end mounting portion 40 of the damper 10 is mounted on the top surface portion 32 so that the mounting position of the upper mounting bracket 30 with respect to the top surface portion 32 can be adjusted in the vehicle width direction inside the cylindrical body 31. Specifically, the two front and rear fixing bolts 35 that attach the upper end mounting portion 40 of the damper 10 to the top surface portion 32 of the upper mounting bracket 30 are loosened, and the upper end mounting portion 40 is formed into a long hole portion 32A in the top surface portion 32. The camber angle of the damper 10 can be adjusted by moving in the vehicle width direction along the longitudinal direction and fastening the upper end mounting portion 40 to the top surface portion 32 with the fixing bolts 35 again.

  (ii) A notch window 36 is formed in the side wall 31F facing the vehicle width direction of the cylindrical body 31 of the upper mounting bracket 30, and the upper portion of the damper 10 whose position is adjusted in the vehicle width direction according to the above (i) is the notch window 36. To be able to invade. As a result, the movement range of the damper 10 in the vehicle width direction, and thus the camber angle adjustment amount, is increased.

  In the present embodiment, the cutout window 36 is formed on the side wall 31 </ b> F that faces the inside of the vehicle in the vehicle width direction of the cylindrical body 31 of the upper mounting bracket 30.

  The cutout window 36 formed in the side wall 31F of the cylindrical body 31 of the upper mounting bracket 30 and facing the vehicle width direction (Z direction) is formed on the cylindrical body 31 as shown in FIGS. 2, 3, 5, and 6. A range that forms an angle α with respect to the cylindrical center 31 c (a range that forms an angle α / 2 on both sides in the diameter direction of the cylindrical body 31 along the Z direction through the cylindrical center 31 c), and a lower end portion of the cylindrical body 31. The height h is a range from the upper surface of the provided flange plate-shaped attached portion 33 along the axial direction of the side wall 31F of the cylindrical body 31. In the present embodiment, α is, for example, 130 degrees, and h is about 2/3 of the total height H of the side wall 31F in the cylindrical body 31 (h may be the entire range of H). The opening range of the cutout window 36 determined by these α and h is such that the damper 10 is adjusted to the maximum camber angle state and the damper 10 is rotated to the maximum turning angle state by the driver's steering operation. The upper portion of the damper 10 (upper spring support 21 and the like) is set in a range where it does not collide with the edge of the cutout window 36.

  Here, a reference mark 60 (FIGS. 3 and 6) is attached in a direction perpendicular to the vehicle width of the mounting convex portion 42 (the upper end surface of the annular convex portion 52A of the upper ball housing 52) in the upper end mounting portion 40 of the damper 10. A camber angle display scale 61 (FIG. 3 and FIG. 6) having a plurality of scales is provided along the edge of the long hole portion 32 </ b> A in the top surface portion 32 of the upper mounting bracket 30. The reference mark 60 moves in the vehicle width direction along the edge of the long hole portion 32A along with the movement of the damper 10 for adjusting the camber angle, and the camber angle display scale 61 corresponding to the reference mark 60 is used as the camber at that time. Make the corner readable. The camber angle display scale 61 is composed of four equally spaced scales 61A, 61B, 61C, and 61D in this embodiment. When the reference mark 60 corresponds to the standard camber angle scale 61A, the upper end mounting portion 40 of the damper 10 is in the standard position in the vehicle width direction with respect to the upper mounting bracket 30, and the camber angle of the damper 10 is, for example, a standard camber angle of -1 degree. It is assumed that it is in a state (FIGS. 1 to 3). Next, every time the reference mark 60 is positioned so as to correspond to the standard camber angle scale 61A to each of the angle scales 61B to 61D, the camber angle of the damper 10 increases, for example, by 0.5 degrees / scale to the minus side (61D). The camber angle of the damper 10 when it corresponds to -2.5 degrees). Finally, the upper end mounting portion 40 of the damper 10 enters the cutout window 36 provided in the cylindrical body 31 of the upper mounting bracket 30, and the upper portion of the damper 10 (upper spring receiver 21 and the like) is provided in the vehicle body 1. When it moves until it reaches the inner diameter of the mounting hole 2A of the mounting portion 2, the camber angle of the damper 10 further increases by about 0.4 degrees as will be described later, and the camber angle of the damper 10 becomes a maximum camber angle state of, for example, -2.9 degrees. (FIGS. 4 to 6).

  Further, in the strut suspension 100, the plate-like body 52P of the upper ball housing 52 has an upper mounting bracket on the diameter along the vehicle width direction through the hole center 52c of the perforated annular protrusion 52A as shown in FIG. The distance L1 formed by the arcuate small projecting contour R1 on the side facing the notch window 36 with respect to the hole center 52c of the perforated annular convex portion 52A is large on the opposite side to the small projecting contour R1. The overhanging contour R2 is set smaller than the distance L2 formed with respect to the hole center 52c of the perforated annular convex 52. Further, as shown in FIG. 11, the plate-like body 53P of the lower ball housing 53 is on the side facing the notch window 36 of the upper mounting bracket 30 on the diameter along the vehicle width direction through the hole center 53c of the perforated portion 53A. The arc-shaped small overhanging contour portion R1 forms a distance L1 with respect to the hole center 53c of the perforated portion 53A, and the large overhanging contour portion R2 opposite to the small overhanging contour portion R1 is the perforated portion 53A. Is set smaller than the distance L2 formed with respect to the hole center 53c. The curvature radii of the small overhanging contour portions R1 and the large overhanging contour portions R2 of the upper and lower ball housings 52 and 53 are the curvature radii of the inner peripheral surface of the side wall 31F of the cylindrical body 31 of the upper mounting bracket 30. Is set to be roughly equivalent.

  In addition, in the strut suspension 100, the hat-type upper mounting bracket 30 has a flange plate-shaped mounting portion 33 that is laser-processed or the like inserted into the outer peripheral portion on the lower end side of the cylindrical body 31, as shown in FIG. The flange plate-like attached portion 33 is configured to be welded to the lower end collar portion 31K of the cylindrical body 31 on the lower surface side (in FIG. 9, w is a welded portion).

  In addition, in the strut suspension 100, the hat-type upper mounting bracket 30 is formed as a hollow cylindrical body 31 that has been machined (or pressed) as shown in FIG. 9, and the side wall 31F of the cylindrical body 31 is provided. The inner peripheral surface and the lower surface 32F of the top surface portion 32 are orthogonal to each other.

Therefore, according to this embodiment, there exist the following effects.
(a) When adjusting the camber angle of the damper 10 by adjusting the mounting position of the upper end mounting portion 40 of the damper 10 with respect to the top surface portion 32 of the hat-type upper mounting bracket 30 in the vehicle width direction, The upper part of the damper 10 whose position has been adjusted is allowed to enter a cutout window 36 formed in a side wall 31F facing the vehicle width direction of the cylindrical body 31 of the upper mounting bracket 30.

  Therefore, the cylindrical body 31 of the upper mounting bracket 30 is fitted and fixed in the mounting hole 2A of the damper mounting portion 2 provided in the vehicle body 1, and the thickness of the cylindrical body 31 is t. When the outer periphery has a radial clearance with respect to the bore inner diameter of the mounting hole 2A as δ, an increase a in the position adjustment amount in the vehicle width direction of the upper end mounting portion 40 of the damper 10 is the upper portion of the damper 10 at the notch window 36. And is enlarged until it reaches the hole inner diameter of the mounting hole 2A, and becomes larger by a = t + δ on the mounting surface of the vehicle body 1 than when the cutout window 36 is not formed. For example, if t = 3 mm and δ = 1 mm, a = 4 mm, and the camber angle increases by about 0.4 degrees, for example.

  If the mounting hole 2A of the damper mounting portion 2 provided in the vehicle body 1 is enlarged to the clearance δ or more than the outer periphery of the cylindrical body 31 in the upper mounting bracket 30, the upper end mounting portion 40 of the damper 10 is processed. The position adjustment amount in the vehicle width direction increases more greatly until the upper portion of the damper 10 reaches the hole inner diameter of the enlarged mounting hole 2A.

  (b) When the cutout window 36 is formed on the side wall 31F facing the inside of the vehicle in the vehicle width direction of the cylindrical body 31 of the upper mounting bracket 30, the camber angle of the damper 10 is a negative camber angle ( Minus camber angle). An increase in the negative camber angle increases the tire grip and improves cornering performance (ease of bending).

  (c) When the upper end mounting portion 40 of the damper 10 is adjusted in position in the vehicle width direction with respect to the upper mounting bracket 30, it corresponds to the reference mark 60 attached to the mounting convex portion 42 in the upper end mounting portion 40 of the damper 10. By reading the camber angle display scale 61 provided along the edge of the long hole portion 32A in the upper mounting bracket 30, the camber angle after the position adjustment of the upper end mounting portion 40 of the damper 10 in the vehicle width direction can be read. .

  (d) Each of the upper and lower ball housings 52, 53 has an upper mounting bracket on the diameter along the vehicle width direction through the hole center 52c of the perforated annular convex part 52A or the hole center 53c of the perforated part 53A. A distance L1 formed by the small projecting contour R1 on the side facing the cutout window 30 with respect to the perforated annular convex portion 52A or the hole centers 52c and 53c of the perforated portion 53A is relative to the small projecting contour R1. The large overhanging contour portion on the opposite side is set to be smaller than the distance L2 formed with respect to the perforated annular convex portion 52A or the hole centers 52c and 53c of the perforated portion 53A. The curvature radii of the small overhanging contour portion R1 and the large overhanging contour portion of each of the upper and lower ball housings 52 and 53 are approximately equal to the curvature radius of the inner peripheral surface of the side wall 31F of the cylindrical body 31 of the upper mounting bracket 30. It was supposed to be set.

  Accordingly, when the upper end mounting portion 40 of the damper 10 sets the mounting position in the vehicle width direction with respect to the upper mounting bracket 30 to the standard position, the large overhanging contour portions of the upper and lower ball housings 52 and 53 are formed on the upper mounting bracket 30. The cylindrical body 31 is positioned on the inner peripheral surface opposite to the notch window 36 on the diameter of the cylindrical body 31 with almost no gap. On the other hand, when the upper end mounting portion 40 of the damper 10 adjusts the mounting position of the upper mounting bracket 30 in the vehicle width direction to the maximum in the vehicle width direction and sets the camber angle of the damper 10 to the maximum camber angle, The small overhanging contour R1 of the ball housings 52 and 53 is positioned on the inner peripheral surface around the notch window 36 on the diameter of the cylindrical body 31 of the upper mounting bracket 30 with almost no gap. Accordingly, the upper and lower ball housings 52 and 53 constituting the upper end mounting portion 40 of the damper 10 can be adjusted in the vehicle width direction with respect to the mounting position of the upper mounting bracket 30 with respect to the top surface portion 32 inside the cylindrical body 31. While being attached to the cylindrical body 31, the contour shape of each of the ball housings 52, 53 is made as large as possible on the diameter along the vehicle width direction, and the upper end attaching portion 40 of the damper 10 is made. This stabilizes the mounting structure with respect to the upper mounting bracket 30 and ensures the mounting strength.

  (e) The hat-shaped upper mounting bracket 30 has a flange plate-shaped mounting portion 33 inserted into the outer peripheral portion on the lower end side of the cylindrical body 31, and the flange plate-shaped mounting portion 33 is on the lower surface side thereof. To be welded to the cylindrical body 31. Accordingly, the cylindrical body 31 is fitted into the mounting hole 2A of the damper mounting portion 2 provided in the vehicle body 1, and the flange-shaped mounted portion 33 provided on the lower end side of the cylindrical body 31 is connected to the damper mounting portion 2. When fixed, the outer peripheral surface of the side wall 31F of the cylindrical body 31 and the flange-shaped attached portion 33 are substantially perpendicular to each other, and the outer shape of the cylindrical body 31 is the diameter of the mounting hole 2A of the vehicle body 1. Can be roughly equivalent. This increases the inner diameter of the cylindrical body 31, and when the camber angle is adjusted as described above, the upper portion of the damper 10 is in contact with the inner peripheral surface of the side wall 31F of the cylindrical body 31. The movable amount is increased to facilitate securing a large camber angle adjustment amount.

  (f) The hat-shaped upper mounting bracket 30 is formed of a dome-shaped cylindrical body 31 which is machined. Therefore, in order for the upper end mounting portion 40 of the damper 10 to adjust the mounting position of the upper mounting bracket 30 with respect to the top surface portion 32 in the vehicle width direction, the upper end mounting portion 40 extends along the lower surface of the top surface portion 32 in the vehicle width direction. , The inner peripheral surface of the side wall 31F of the cylindrical body 31 of the upper mounting bracket 30 and the lower surface of the top surface portion 32 are orthogonal to each other, increasing the movable amount of the upper end mounting portion 40 of the damper 10 and increasing the camber angle. Ensuring adjustment amount is easy.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. It is included in the present invention. In the strut suspension 100 of the present invention, the cutout window 36 may be formed on the side wall 31F facing the outside of the vehicle in the vehicle width direction of the cylindrical body 31 of the upper mounting bracket 30.

  Further, the strut suspension 100 of the present invention is not limited to the one used on the front wheel side of the vehicle, and may be used on the rear wheel side.

  Further, the damper 10 constituting the strut suspension 100 of the present invention may have any specifications.

  According to the present invention, in a strut suspension in which a hat-type upper mounting bracket is fixed to a damper mounting portion provided on a vehicle body, and an upper end mounting portion of a damper is mounted on the upper mounting bracket, the camber angle adjustment range is increased. Can take.

DESCRIPTION OF SYMBOLS 1 Vehicle body 2 Damper attachment part 2A Attachment hole 3 Knuckle 4 Wheel 10 Damper 11C Lower end attachment part 13 Connecting rod 30 Upper attachment bracket 31 Cylindrical body 31A Opening part 31F Side wall 32 Top surface part 32F Lower surface 33 Attachment part 36 Notch window 40 Upper end Mounting portion 41 Mounting base 42 Mounting convex portion 51 Pillow ball 52 Upper ball housing 52A Perforated annular convex portion 52c Hole center 52P Plate body 53 Lower ball housing 53A Perforated portion 53c Hole center 53P Plate body 60 Reference mark 61 Camber angle Display scale R1 Small overhanging contour R2 Large overhanging contour L1, L2 Distance

Claims (6)

A hat type upper mounting bracket is fixed to a damper mounting portion provided on the vehicle body, an upper end mounting portion of the damper is mounted to the upper mounting bracket, a lower end mounting portion of the damper is mounted to the knuckle, and a wheel is pivotally supported on the knuckle. ,
The hat-shaped upper mounting bracket has an opening at the lower end, and has a topped cylindrical body with a top surface at the upper end. The cylindrical body is fitted into the mounting hole of the damper mounting portion, and is located on the lower end side of the cylindrical body. A strut suspension in which the mounted portion provided is fixed to the damper mounting portion, and the upper end mounting portion of the damper is inserted into the cylindrical body and attached to the top surface portion thereof,
The upper end mounting portion of the damper is attached to the top surface portion so that the position of the mounting position relative to the top surface portion can be adjusted in the vehicle width direction inside the cylindrical body of the upper mounting bracket,
A strut suspension in which a notch window is formed in a side wall facing the vehicle width direction of the tubular body of the upper mounting bracket, and an upper portion of a damper whose position is adjusted in the vehicle width direction is allowed to enter the notch window.   The strut-type suspension according to claim 1, wherein the notch window is formed on a side wall facing the inside of the vehicle in a vehicle width direction of the tubular body of the upper mounting bracket. The upper end mounting portion of the damper is arranged to be inserted through a mounting base portion that is attached to the lower surface of the top surface portion of the upper mounting bracket and a long hole portion that is provided in the top surface portion of the upper mounting bracket and that is long in the vehicle width direction. Mounting protrusions,
A reference mark is attached to the mounting convex portion at the upper end mounting portion of the damper, and a camber angle display scale is provided along the edge of the long hole portion in the upper mounting bracket,
When the upper end mounting part of the damper is adjusted to the mounting position in the vehicle width direction relative to the upper mounting bracket, the camber angle after the position adjustment of the damper in the vehicle width direction is read by the camber angle display scale corresponding to the reference mark. 3. A strut suspension according to claim 1 or 2, which is enabled. The upper end mounting portion of the damper has a pillow ball into which a connecting rod that is integrated with the cylinder of the damper is inserted, and an upper and lower portion that holds the pillow ball from above and below and can be fastened together with the top surface portion of the upper mounting bracket. And a ball housing.
The upper ball housing is made of a plate-like body having a perforated annular projection protruding therefrom, and the lower ball housing is made of a plate-like body having a perforated portion, and a pillow is placed in the hole of the perforated annular projection of the upper ball housing A ball is housed and this pillow ball is held between the upper and lower ball housings,
In a state where the upper and lower ball housings are mounted on the top surface of the upper mounting bracket, both plate-like bodies of the upper and lower ball housings constitute the mounting base, and the perforated annular convex portion of the upper ball housing serves as the mounting convex portion. Configure
The upper ball housing has a small overhanging contour on the side facing the notch window of the upper mounting bracket at the hole center of the perforated annular projection on the diameter along the vehicle width direction through the center of the hole of the perforated annular projection. The distance formed with respect to the small overhanging contour portion is set to be smaller than the distance between the large overhanging contour portion on the opposite side to the hole center of the perforated annular convex portion, and
The lower ball housing has a diameter along the vehicle width direction through the hole center of the perforated part, and the distance formed by the small overhanging contour on the side facing the notch window of the upper mounting bracket with respect to the hole center of the perforated part Is set smaller than the distance formed by the large overhanging contour portion opposite to the small overhanging contour portion with respect to the hole center of the perforated portion,
The curvature radius of the small overhanging outline part and large overhanging outline part of each upper and lower ball housing is set to be substantially equal to the curvature radius of the inner peripheral surface of the side wall of the cylindrical body of the upper mounting bracket. Strut suspension.   The hat-type upper mounting bracket has a flange plate-shaped mounting portion that is inserted into the outer peripheral portion on the lower end side of the cylindrical body, and the flange plate-shaped mounting portion is welded to the cylindrical body on its lower surface side. The strut suspension according to any one of claims 1 to 4.   6. The hat-type upper mounting bracket is a cut-out covered cylindrical body, and the inner peripheral surface of the side wall of the cylindrical body and the lower surface of the top surface portion are orthogonal to each other. The strut suspension described in 1.

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