Suspension device for a vehicle and method for supporting or carrying a wheel

Abstract

Suspension device of the type of a double wishbone for a vehicle, comprising: a steering knuckle (11) supporting a wheel; an upper arm (12) being substantially vertically rotatable and connected or connectable to a vehicle body and pivotably supporting an upper section of the steering knuckle (11); a lower arm (13) being provided below the upper arm (12) and being substantially vertically rotatable and connected to the vehicle body and pivotably supporting a lower section of the steering knuckle (11); and a coupling rod (16) coupling the upper arm (12) and the lower arm (13), the coupling rod (16) being configured to be inclined in a longitudinal direction of the vehicle and rotatable with the upper arm (12) and the lower arm (13), respectively.to be connected to the lower arm (13), wherein the coupling rod (16) is connected to corresponding sections of the upper arm (12) and the lower arm (13), each positioned closer to a side of the vehicle body than to a side of the axle box.

Description

[0001] The present invention relates to a suspension device for a vehicle, which can be applied to a vehicle such as a motor vehicle, and relates in particular to a suspension device in the form of a double wishbone or double triangular wishbone. Furthermore, the invention relates to a method for supporting or carrying a wheel on a vehicle.

[0002] A conventional double wishbone suspension system comprises a steering knuckle that supports a wheel and a pair of upper and lower arms that support the upper and lower sections of the steering knuckle, respectively. This type of suspension system has the weakness that the upper arm moves forward and the lower arm moves rearward, causing these arms to move in different directions during braking, thus compromising the suspension's caster stiffness.

[0003] Nowadays, elastic bushings are provided between the corresponding vehicle body connection sections of the upper and lower arms and the vehicle body. By designing the rubber bushings to be rigid, the upper and lower arms can be prevented from shifting in the opposite direction to the longitudinal direction of the vehicle, thus ensuring the caster stiffness of the suspension.

[0004] However, the rigid construction of the rubber bushings described above prevents the upper and lower arms from moving longitudinally along the vehicle, thus unduly suppressing the longitudinal compliance of the suspension. Consequently, a longitudinal shock generated when the vehicle drives over bumps is not sufficiently absorbed by the longitudinal compliance of the suspension, resulting in a reduction in the vehicle's ride quality.

[0005] Document JP H07-246 815 A discloses a suspension device for a vehicle as a technology for solving the problems described above (i.e., as a technology for ensuring compatible caster stiffness as well as compliance of the suspension in the longitudinal direction).

[0006] In the suspension device for the vehicle described in the patent document above, the upper arm and the lower arm are each equipped with two vehicle body connection sections spaced apart from each other in the longitudinal direction of the vehicle. The two vehicle body connection sections of the upper arm and the two vehicle body connection sections of the lower arm are integrally connected by a planar connecting element. This connecting element prevents the upper arm and the lower arm from being displaced in opposite longitudinal directions, while not preventing them from being displaced in the same longitudinal direction, thus ensuring the caster stiffness and the longitudinal compliance of the suspension in a compatible manner.

[0007] In the suspension device for the vehicle described above, the connecting element described above integrates the vehicle body connection sections of the upper arm and the vehicle body connection sections of the lower arm. Therefore, the upper and lower arms cannot rotate freely in a vertical direction, which could impair the suspension function.

[0008] Accordingly, an objective of the present invention is to provide a suspension device for a vehicle which can ensure compliance in the longitudinal direction and caster stiffness in a compatible manner without impairing the suspension function.

[0009] This objective is achieved by the features of the independent claims. Further embodiments of the present invention are the subject of the dependent claims.

[0010] The present invention is a suspension device in the form of a double wishbone or double wishbone for a vehicle, comprising a steering knuckle that supports or carries a wheel, an upper arm that is vertically rotatable and connected to a vehicle body and pivotably supports or carries an upper section of the steering knuckle, a lower arm that is provided below the upper arm and is vertically rotatable and connected to the vehicle body, and a coupling rod that couples the upper arm and the lower arm together, wherein the coupling rod is configured to be inclined in a longitudinal direction of the vehicle and to be rotatably connected to the upper arm or the lower arm.

[0011] According to the present invention, since the coupling rod is configured as described above, ensuring compliance in the longitudinal direction and ensuring caster stiffness can be achieved in a compatible manner without impairing the suspension function.

[0012] In particular, because the coupling rod that connects the upper and lower arms is configured to be inclined in the longitudinal direction of the vehicle, it prevents the upper and lower arms from shifting in the opposite direction to the vehicle's longitudinal direction during braking, thus ensuring caster stiffness. Furthermore, because it is unnecessary for the rubber bushings, which are generally provided between the vehicle body and the upper and lower arm body connection sections, to be rigid, the longitudinal compliance of the suspension provided by the rubber bushings is ensured.

[0013] Furthermore, since the coupling rod is rotatably or pivotably connected to the upper arm or the lower arm, the coupling rod can couple the upper arm and the lower arm together without impairing or hindering the vertical rotation of the upper arm and the lower arm as a suspension function.

[0014] In one embodiment of the present invention, the coupling rod is connected to the upper arm or the lower arm via a ball joint, a pillow block bearing or a rubber bushing.

[0015] According to this embodiment, the range of motion of the connecting section of the coupling rod with the arm (the upper arm, the lower arm) can be increased. This means that the connecting section of the coupling rod can be moved not only around an axial line of the connecting section, but also along an axis of the connecting section. Accordingly, the flexibility of a connection position or angle at which the coupling rod is connected to the arm can be improved.

[0016] In a further embodiment of the present invention, the coupling rod is configured to couple the upper arm and the lower arm in an inclined state, in which a front side of the latter, seen in a longitudinal direction of the vehicle, is arranged at a higher level than a rear side of the former, seen in the longitudinal direction of the vehicle.

[0017] According to this embodiment, instead of a bending load, a tensile load can be applied to the coupling rod during braking, whereby the upper arm and the lower arm are displaced in the opposite direction to the longitudinal direction of the vehicle, so that the weight reduction of the coupling rod can be achieved.

[0018] In a further embodiment of the present invention, the upper arm comprises a front arm section and a rear arm section, wherein a front end section of the coupling rod is connected to a front side of the front arm section of the upper arm.

[0019] According to this embodiment, the coupling rod that couples the upper arm and the lower arm can be configured to be inclined in a more suitable manner in the longitudinal direction of the vehicle, so that the coupling rod can effectively prevent the upper arm and the lower arm from being displaced in the opposite direction to the longitudinal direction of the vehicle during braking.

[0020] In a further embodiment of the present invention, the lower arm comprises a front arm section and a rear arm section, wherein a rear end section of the coupling rod is connected to a rear side of the rear arm section of the lower arm.

[0021] According to this embodiment, the coupling rod that couples the upper arm and the lower arm can be configured to be inclined in a more suitable manner in the longitudinal direction of the vehicle, so that the coupling rod can effectively prevent the upper arm and the lower arm from being displaced in the opposite direction to the longitudinal direction of the vehicle during braking.

[0022] In a further embodiment of the present invention, the coupling rod is configured to couple the upper arm and the lower arm in an inclined state, in which a front side of the latter, seen in a longitudinal direction of the vehicle, is arranged at a lower level than a rear side of the former, seen in the longitudinal direction of the vehicle.

[0023] According to this embodiment, a pressure load can be applied to the coupling rod during braking, whereby the upper arm and the lower arm are displaced in the opposite direction to the longitudinal direction of the vehicle, so that the weight reduction of the coupling rod can be achieved.

[0024] In this embodiment, it is preferred that a rear end section of the coupling rod is connected to a rear side of the rear arm section of the upper arm. Furthermore, it is preferred that a front end section of the coupling rod is connected to a front side of the front arm section of the lower arm.

[0025] In a further embodiment of the present invention, the upper arm is equipped with a coupling rod connection section to which a connection with the connecting rod exists, wherein the coupling rod connection section of the upper arm is configured to project substantially horizontally from the upper arm, wherein the lower arm is equipped with a coupling rod connection section to which a connection with the connecting rod exists, wherein the coupling rod connection section of the lower arm is configured to project substantially horizontally from the lower arm, and the coupling rod is configured substantially in a linear beam shape, wherein one end section of the latter is bent towards the upper arm and the other end section of the former is bent towards the lower arm.

[0026] According to this embodiment, due to the configuration of the coupling rod such that its two end sections are bent as described above, the two end sections of the coupling rod can be arranged substantially parallel to a front end face of the coupling rod connection section of the upper arm side and a rear end face of the coupling rod connection section of the lower arm side. This allows the angle of connection at which the two end sections of the coupling rod are connected to the two end faces of the coupling rod connection sections to fall within a suitable range.

[0027] In a further embodiment of the present invention, the steering knuckle is equipped with a steering rod connection section to which a steering rod for rotating the steering knuckle in a transverse direction of the vehicle is connected, and a coupling rod connection section of the lower arm, to which the coupling rod is connected, is arranged on an opposite side, as seen in a longitudinal direction of the vehicle, to the steering rod connection section relative to a center point, as seen in the longitudinal direction of the vehicle, of the steering knuckle.

[0028] According to this embodiment, since the coupling rod connection section is located on the opposite side, as seen in a longitudinal direction of the vehicle, to the steering rod connection section relative to the center point, as seen in the longitudinal direction of the vehicle, of the steering knuckle, the coupling rod can be connected to the lower arm without engaging with the steering rod.

[0029] In a further embodiment of the present invention, the lower arm is equipped with a stabilizer connection section to which a stabilizer is connected, and a coupling rod connection section of the lower arm, to which the coupling rod is connected, is arranged on an opposite side, as seen in the longitudinal direction of the vehicle, to the stabilizer connection section of the lower arm.

[0030] According to this embodiment, since the coupling rod connection section is located on the opposite side, as seen in the longitudinal direction of the vehicle, to the stabilizer connection section of the lower arm, it can be connected to the lower arm without interfering with the stabilizer.

[0031] In a further embodiment of the present invention, the coupling rod is connected to corresponding sections of the upper arm and the lower arm, which are each positioned closer to a side of the vehicle body than to a side of the steering knuckle.

[0032] According to this embodiment, it can be prevented that the weight of the coupling rod unduly influences a smooth vertical movement of the respective arm.

[0033] According to another aspect, a procedure is provided for supporting or carrying a wheel on a vehicle, comprising the following steps: Providing a steering knuckle for attaching a wheel; pivotable support or carrying of an upper section of the axle stub by an upper arm, pivotable support or carrying of a lower section of the axle stub by a lower arm, and Coupling the upper arm and the lower arm by means of a coupling rod, wherein the coupling rod is pivotably connected to the upper arm and the lower arm in order to be inclined in a longitudinal direction of the vehicle.

[0034] Preferably, the coupling rod is connected to the upper arm or the lower arm via a ball joint, a pillow block bearing or a rubber bushing.

[0035] Further features, aspects and advantages of the present invention will become apparent from the following description, which refers to the accompanying drawings. Fig. Figure 1 is a perspective view showing a suspension device for a vehicle. Fig. Figure 2 is a side view of the suspension device for the vehicle, as seen from one wheel side. Fig. Figure 3 is a top view showing the suspension device for the vehicle (no damper shown). Fig. Figure 4 is a side view showing an upper arm, a lower arm and a coupling rod, as seen from the wheel side. Fig. 5 is a cross-sectional view of the Fig. 4. Fig. Figure 6 is a side view showing a modified example of a mounting position for the coupling rod. Fig. Figure 7 is a side view showing another modified example with respect to an angle of both end sections of the coupling rod. Fig. 8 is an enlarged cross-sectional view showing an area W1 the Fig. 7 shows. Fig. Figure 9 is an enlarged cross-sectional view, which is another modified example of the area. W1 the Fig. 7 shows. Fig. Figure 10 is a top view showing the case where an upper arm has a rough V-shape in a top view. Fig. Figure 11 is a top view, which represents another case in which a lower arm has a rough L-shape in the top view. Fig. Figure 12 is a side view, showing the case where the lower arm, viewed from the top and from one side of a vehicle body, has a rough L-shape. <Execution >

[0036] One embodiment of the present invention is explained in more detail below with reference to the drawings. A suspension device 1 for a vehicle according to the embodiment, with reference to the Fig. 1 - Fig. 5 described. The suspension device 1 A double wishbone or double wishbone suspension device is a suspension system that can be applied to a vehicle, such as a motor vehicle. The following is a case in which the suspension device 1 specifically described when applied to a front wheel suspension.

[0037] In the Fig. In Figure 1 and other FIGURES, the terms “front”, “rear”, “inside”, “outside”, “top” and “bottom”, indicated by arrows and indicating directions, refer to a front of the vehicle, a rear of the vehicle, an inward-facing side in a vehicle width direction, an outward-facing side in the vehicle width direction, a top of the vehicle and a bottom of the vehicle.

[0038] As in the Fig. 1 and Fig. The suspension device shown in Figure 2 includes...1 a coupling rod for the vehicle 16 , which includes an upper arm 12 and a lower arm 13 to couple together, which are an upper section and a lower section of a steering knuckle 11 To support or carry in order to mount a wheel so that it can rotate. The coupling rod 16 is configured to be inclined in a longitudinal direction of the vehicle. < Front section of vehicle body >

[0039] As in the Fig. 1 and Fig. The suspension device shown in Figure 2 is... 1 for the vehicle on one side surface 3a the two from the right and left sides (i.e., on the outward-facing side in the vehicle's width direction) of a front vehicle body section 3 attached. This involves Fig. 1 only a left-side section of the front vehicle body section 3 The front section of the vehicle body. 3includes a pair of right and left front side frames 31 , a pair consisting of right and left lateral segments 32 as well as connecting links 33 , which are the front side frames 31 and the lateral members 32 connect them.

[0040] The front side frames 31 , which are beam-shaped elements extending essentially in the longitudinal direction of the vehicle, are located on both the right and left sides of the front vehicle body section. 3 arranged. The side members 32 , which are beam-shaped elements extending essentially in the longitudinal direction of the vehicle, are located on both the right and left sides of the front vehicle body section. 3 arranged and essentially below the front side frames arranged on the right and left 31 positioned so that each of them is from the front side frame 31are spaced apart. The connecting links 33 are located on a front and a back side of an upper surface of the lateral segment 32 provided. The side link 32 and the front side frame 31 are connected by the linking elements described above 33 interconnected. A suspension tower. 40 , which is an upper end section of a damper described later 14 It is located on the upper surface of the front side frame. 31 Provided. An outward-facing side surface. 3a , viewed in the vehicle's width direction, of the front section of the vehicle body 3 is made up of corresponding outwardly facing side surfaces of the front side frame 31 , of the lateral member 32 , the connecting links 33 and the suspension tower 40 educated. < Suspension device for a vehicle >

[0041] As in the Fig. 1 - Fig. The suspension device shown in Figure 3 includes... 1 for the vehicle a steering knuckle 11 , which supports or carries the front wheel, an upper arm 12 , which is an upper section of the steering knuckle 11 supports or carries a lower arm 13 , which is a lower section of the steering knuckle 11 supports or carries a damper 14 , which absorbs an impact emanating from a road surface, a stabilizer 15 , which causes different movements in the vertical direction between the right and left suspension devices 1 can occur, suppressed, as well as a coupling rod 16 , which prevents the upper arm 12 and the lower arm 13 during braking, they are shifted in a direction opposite to the longitudinal direction. <Upper arm>

[0042] As in the Fig. 3 and Fig. As shown in 4, the upper arm 12 In a top view, for example, it has a rough A-shape. The upper arm 12 is equipped with a steering knuckle connection section 121 equipped with the upper section of the steering knuckle 11 connected, a pair consisting of a front and a rear body connection section (a front body connection section) 122a and a rear vehicle body connection section 122b ), which is connected to an upper section of the side surface 3a of the front section of the vehicle body 3 are connected, to an anterior arm section 123 , which connects the steering knuckle section 121 and the front vehicle body connecting section 122a connects, with a posterior arm section 124 the axle stub connecting section 121and the rear vehicle body connection section 122b connects, with a connecting arm section 125 , which is provided to move between the anterior arm section 123 and the posterior arm section 124 to extend, and with a coupling rod connecting section 126 , where a connection is made with a front end section of the coupling rod 16 consists.

[0043] A recessed section 121a , in which a ball joint is attached to the upper section of the steering knuckle described later 11 It is provided, pivotably mounted, and is attached to a lower surface of the axle stub connection section. 121 provided.

[0044] The vehicle body connection sections 122a , 122b are thus connected to an upper section of the side surface 3a the front surface of the vehicle body 3(for example, on an outward-facing side surface of the front side frame) 31 ) connected such that they are spaced apart from each other in the longitudinal direction and rotatable in the vertical direction (see Fig. 1 and Fig. 2) In particular, these vehicle body connecting sections 122a , 122b configured to be tubular, and their tubular axial lines are configured to extend substantially coaxially in the longitudinal direction of the vehicle. A tubular elastic bushing DB is coaxial with each of the tubular vehicle body connection sections. 122a , 122b fitted (see Fig. 1).

[0045] Meanwhile, as in the Fig. 1 and Fig. 2 shown, retaining bracket (a front retaining bracket) 35a and a rear retaining bracket 35b ), which connect the vehicle body sections 122a , 122bRotatable in the vertical direction, supporting or carrying at the upper section of the side surface 3a the front surface of the vehicle body 3 (for example, on the outward-facing side surface of the front side frame) 31 ) provided.

[0046] The retaining brackets 35a , 35b The two end sections of the rotation axis sections support or carry them. 35c or 35d , which extend essentially in the longitudinal direction of the vehicle. Each of the rotation axis segments 35c , 35d is inserted into a central hole of the elastic bushing DB, which is located in each of the vehicle body connection sections. 122a , 122b of the upper arm 12 is provided. Each of the retaining brackets 35a , 35bIn plan view, it is configured in a rough U-shape such that its respective front end section and its respective rear end section are bent outwards in the width direction of the vehicle, and its front end section and its rear end section are aligned with the front end section and the rear end section of each of the rotation axis sections. 35c , 35d connected, wherein the two respective end sections (i.e. the front and rear end sections described above) of the rotation axis sections 35c , 35d are supported or carried.

[0047] The rotation axis sections 35c , 35d They are provided coaxially and configured to be tilted forwards and upwards. Accordingly, the upper arm 12 with the upper section of the side surface 3a of the front section of the vehicle body 3connected in such a tilted state that its front side is placed at a higher level than its rear side.

[0048] In particular, a pair of front and rear receiving recess sections (a front receiving recess section) is 36a and a rear receiving recess section 36b ) for example, on the upper section of the side surface 3a of the front section of the vehicle 3 provided (see Fig. 1 and Fig. 2) The retaining brackets 35a , 35b are each within the receiving recess sections 36a , 36b provided.

[0049] The anterior arm section 123It extends obliquely outwards and backwards and is configured in a beam shape, for example, by curving forwards in a convex form. It is an end section of the front arm section that extends outwards in a longitudinal direction. 123 is connected to the steering knuckle connection section 121 connected, and an inwardly directed end section of the front arm section. 123 is connected to the front of the vehicle body connecting section 122a tied together.

[0050] The posterior arm section 124 It extends obliquely outwards and forwards and is configured in a beam shape such that, for example, it is essentially curved backwards in a convex form. It is an end section of the posterior arm section that extends outwards in a longitudinal direction. 124 is connected to the steering knuckle connection section 121connected, and an inwardly directed end section of the posterior arm section. 124 is connected to the rear vehicle body connection section 122b tied together.

[0051] The connecting arm section 125 It extends essentially along the longitudinal direction of the vehicle and is configured in a beam shape, for example, in a convex shape that is essentially curved inwards. A longitudinally forward-facing end section of the connecting arm section. 125 is with the surroundings of the longitudinally inwardly directed end section of the front arm section 123 connected, and a longitudinally rearward directed end section of the connecting arm section 125 is related to the area surrounding the longitudinally inward directed end section of the posterior arm section 124 tied together.

[0052] The coupling rod connecting section 126 is located on the front side of the anterior arm section 123 of the upper arm 12 provided. In particular, the coupling rod connection section is 126 near the longitudinally inward-facing end section of the anterior arm section 123 provided. In other words, the coupling rod connection section is 126 locally in front of a connecting section of the anterior arm section 123 and the connecting arm section 125 provided.

[0053] Furthermore, the coupling rod connecting section cantilevers. 126 It extends diagonally forwards and upwards, and it is a ball joint. 126a , where a connection is made with the front end section of the coupling rod 16 consists of a lower surface of the coupling rod connection section 126 provided (see Fig. 5) By configuring the coupling rod connection section in such a way that 126 As described above, the coupling rod connecting section cantilevers diagonally forwards and upwards. 126 essentially parallel to the coupling rod 16 arranged in a linear beam shape described later, such that a connecting angle of the coupling rod 16 and the coupling rod connecting section 126 , at which the forward-facing end section of the coupling rod 16 with the coupling rod connecting section 126 The connecting rod can be manufactured with a corresponding downward slope. This means that the forward-facing end section of the coupling rod 16 such as with the coupling rod connecting section 126 It may be connected that the coupling rod 16It can rotate not only in the width direction of the vehicle, but also in the length direction of the vehicle.

[0054] The upper arm configured as described above 12 is vertically rotatable with the side surface 3a of the front section of the vehicle body 3 connected by rotatable support or carrying of the vehicle body connection sections 122a , 122b on the retaining brackets 35a , 35b . < Lower arm >

[0055] As in the Fig. 3 and Fig. As shown in section 4, the lower arm 13 In a top view, for example, it has a rough A-shape. The lower arm 13 is equipped with a steering knuckle connection section 131 equipped with the lower section of the steering knuckle 11is connected, as well as with a pair consisting of a front and a rear body connection section (a front body connection section) 132a and a rear vehicle body connection section 132b) , which are connected to a lower section of the side surface 3a of the front section of the vehicle body 3 are connected, to an anterior arm section 133 , which connects the steering knuckle section 131 and the front vehicle body connecting section 132a connects, a posterior arm section 134 , which connects the steering knuckle section 131 and the rear vehicle body connection section 132b connects, with a connecting arm section 135 and an inclined connecting section 136 , which are provided to move between the anterior arm section 133 and the posterior arm section134 to extend, and with a damper connection section 137 , which has a lower end section of the damper 14 is connected, and with a stabilizer connection section 138 , where an end section of the stabilizer 15 is connected, and with a coupling rod connecting section 139 , where a connection is made with the lower end section of the coupling rod 16 consists.

[0056] A recessed section 131a , in which a ball joint is attached to the lower section of the steering knuckle described later 11 It is provided, pivotably mounted, and is attached to a lower surface of the axle stub connection section. 131 provided.

[0057] The vehicle body connection sections 132a , 132b are thus connected to a lower section of the side surface 3a the front surface of the vehicle body 3connected in that they are essentially spaced apart from each other in the longitudinal direction and rotatable in the vertical direction (see Fig. 1 and Fig. 2) In particular, these vehicle body connecting sections 132a , 132b Configured to be tubular, and their tubular axial lines are configured to extend substantially coaxially in the longitudinal direction of the vehicle. A tubular elastic bushing DB is coaxial with each of the tubular vehicle body connection sections. 132a , 132b fitted (see Fig. 1).

[0058] Meanwhile, as in the Fig. 1 and Fig. 2 shown, a pair of retaining brackets (one front retaining bracket) 37a and a rear retaining bracket 37b) , which connect the vehicle body sections 132a , 132brotatable, essentially supporting or carrying in the vertical direction, at the lower section of the side surface 3a the front surface of the vehicle body 3 (for example, on the outward-facing side surface of the front side frame) 32 ) provided.

[0059] The retaining brackets 37a , 37b support or carry sections of the axis of rotation 37c , 37d , which extend essentially in the longitudinal direction of the vehicle. Each of the rotation axis segments 37c , 37d is inserted into a central hole of the elastic bushing DB, which is located in each of the vehicle body connection sections. 132a , 132b of the lower arm 13 is provided. Each of the retaining brackets 37a , 37bIn plan view, it is configured in a rough U-shape such that its respective front end section and its respective rear end section are bent outwards in the width direction of the vehicle, and its front end section and its rear end section are aligned with the front end section and the rear end section of each of the rotation axis sections. 37c , 37d connected, wherein the two respective end sections (i.e. the front and rear end sections described above) of the rotation axis sections 37c , 37d are supported or carried.

[0060] The rotation axis sections 37c , 37d are, for example, essentially coaxial and essentially parallel to the longitudinal direction of the vehicle. Accordingly, the lower arm 13 with the lower section of the side surface 3a of the front section of the vehicle body 3connected in a state parallel to the longitudinal direction of the vehicle.

[0061] In particular, a pair of front and rear receiving recess sections (a front receiving recess section) is 38a and a rear receiving recess section 38b) for example, on the lower section of the side surface 3a of the front section of the vehicle 3 provided (see Fig. 1 and Fig. 2) The retaining brackets 37a , 37b are each within the receiving recess sections 38a , 38b provided.

[0062] The anterior arm section 133 It is configured in a beam shape, extending diagonally outwards and backwards. In particular, the front arm section... 133configured in such a way that it is essentially located on the side of the front vehicle body connection section 132a essentially parallel to the width of the vehicle, extending outwards, then curving and extending obliquely backwards, and subsequently curving and extending outwards essentially parallel to the width of the vehicle. A longitudinally outward-facing end section of the front arm section. 133 is connected to the steering knuckle connection section 131 connected, and an inwardly directed end section of the front arm section. 133 is connected to the front of the vehicle body connecting section 132a tied together.

[0063] The posterior arm section 134 It is configured in a bar shape, extending diagonally outwards and forwards. In particular, the rear arm section...134 configured in such a way that it is essentially located on the side of the rear vehicle body connecting section 132b essentially parallel to the width of the vehicle, extending outwards, then curving and extending obliquely forwards, and then curving and extending obliquely forwards. A longitudinally outward-facing end section of the rear arm section. 134 is connected to the steering knuckle connection section 131 connected, and an inwardly directed end section of the posterior arm section. 134 is connected to the rear vehicle body connection section 132b tied together.

[0064] This means that there is a gap between the front part of the arm. 133 and the posterior arm section 134(i.e., one width of the lower arm) 13 (in the longitudinal direction) is configured on the side of the axle stub connection section 131 to be relatively narrow, on the side of the vehicle body connecting sections 132a , 132b to be relatively wide and to extend towards the side of the axle stub connecting section 131 in a central area between the steering knuckle connection section 131 and the vehicle body connection sections 132a , 132b to gradually rejuvenate.

[0065] The connecting arm section 135 It is configured in a beam shape such that it extends essentially in the longitudinal direction of the vehicle. A longitudinally forward-facing end section of the connecting arm section. 135 is with the surroundings of the longitudinally inwardly directed end section of the front arm section 133connected, and a longitudinally rearward directed end section of the connecting arm section 135 is related to the surroundings of an inwardly directed end section of the posterior arm section in the longitudinal direction 134 tied together.

[0066] The inclined connecting section 136 For example, it is configured in such a way that it extends obliquely forwards and outwards. An end section of the inclined connecting section is directed forwards in a longitudinal direction. 136 is with a longitudinally viewed center point of the anterior arm section 133 connected, and a longitudinally rear end section of the inclined connecting section 136 is associated with the surroundings of a longitudinally inwardly directed end section of the posterior arm section 134 tied together.

[0067] The damper connection section 137 is located on a narrow section of the lower arm 13 , which is located near the axle stub connection section 131 is arranged, provided (see Fig. 1) The damper connection section 137 is equipped with a rotation axis section (not shown) that forms the lower end section of the damper. 14 Rotatably supports or carries. The rotation axis section described above extends essentially in the longitudinal direction, and its front end section and its rear end section are connected to a section that forms a front part of the narrow section of the front arm section described above. 133 forms, or is connected with a section that forms a posterior part of the narrow section of the posterior arm section described above. 134 educates.

[0068] The stabilizer connection section138 is near the steering knuckle connection section 131 a front side of the anterior arm section 133 of the lower arm 13 provided.

[0069] The coupling rod connecting section 139 is located on the posterior side of the posterior arm section 134 of the lower arm 13 Provided. That is, the coupling rod connection section. 139 is located on a section of the lower arm 13 provided, which is located on one of the stabilizer connection sections 138 is arranged on the opposite side. Furthermore, the coupling rod connecting section 139 near the longitudinally inward-facing end section of the posterior arm section 134 Provided. That is, the coupling rod connection section. 139is located on the rear side of a connecting section of the posterior arm section 134 and the connecting arm section 135 provided.

[0070] Furthermore, the coupling rod connecting section cantilevers. 139 It extends diagonally backwards and downwards, and it is a ball joint. 139a , where a connection is made with a rear end section of the coupling rod 16 consists of an upper surface of the coupling rod connecting section 139 provided (see Fig. 5) By configuring the coupling rod connection section in such a way that 139 As described above, the coupling rod connecting section cantilevers diagonally backwards and downwards. 139 essentially parallel to the coupling rod 16 arranged, which is configured in the linear beam shape described later, such that a connection angle of the coupling rod 16and the coupling rod connecting section 139 , at which the rearward-facing end section of the coupling rod 16 with the coupling rod connecting section 139 The connecting rod can be manufactured with a corresponding downward slope. This means that the forward-facing end section of the coupling rod 16 such as with the coupling rod connecting section 139 It may be connected that the coupling rod 16 It can rotate not only in the width direction of the vehicle, but also in the length direction of the vehicle.

[0071] The upper arm configured as described above 13 is essentially rotatable in a vertical manner with the side surface 3a of the front section of the vehicle body 3 connected by rotatable support or carrying of the vehicle body connection sections 132a , 132b on the retaining brackets 37a , 37b . < axle knuckle >

[0072] As in the Fig. 1 - Fig. As shown in section 3, the steering knuckle includes 11 a steering knuckle body 111 , a hub 112 , which supports or carries the front wheel in a rotatable manner, as well as a steering rod connection section 113 , where a connection to a steering rod 50 consists of a steering mechanism (not shown) extending from it. The steering rod 50 is a rod for rotating the steering knuckle 11 in the transverse direction of the vehicle.

[0073] The steering knuckle body 111 includes a main plate section 111s , which is aligned in the width direction of the vehicle, and a peripheral wall section 111t , which is provided in such a way that, for example, it is separated in the width direction of the vehicle by a circumferential edge or a circumferential border of the main plate section 111sessentially points inwards. The main plate section 111s is configured to be vertically long and is inclined in such a way that its upper section is positioned inwards in the width direction of the vehicle.

[0074] A ball joint is attached to an upper section (for example, an upper surface of an upper end section of the peripheral wall section). 111t) of the steering knuckle body 111 provided, and this ball joint is pivotally mounted within the recessed section. 121a the lower surface of the axle stub connecting section 121 of the upper arm 12 A ball joint is attached to a lower section (for example, an upper surface of a lower end section of the peripheral wall section). 111t ) of the steering knuckle body 111 provided, and this ball joint is pivotally mounted within the recessed section. 131athe lower surface of the axle stub connecting section 131 of the lower arm 13 .

[0075] In this way the steering knuckle 11 over the arms 12 , 13 vertically, but also in the transverse direction of the vehicle, rotatable on the vehicle body, supported or carried by the upper section and the lower section of the axle stub. 11 provided ball joints that are located within the recess sections 121a , 131a the axle stub connecting sections 121 , 131 the corresponding arms 12 , 13 Mount in a swiveling position.

[0076] The hub 112 is, for example, rotatable in both the vertical and longitudinal directions, with a center point of the axle body 111connected, for example, to a side surface of the steering knuckle body that is on the outside in the width direction of the vehicle. 111 (i.e., on a main surface of the main plate section that is on the outside in the width direction of the vehicle) 111s) .

[0077] The steering rod connection section 113 is, for example, located at a midpoint, viewed in the vertical direction, of a front end of the steering knuckle body. 111 It is designed so that it essentially cantilevers forward. This means that the steering rod connection section 113 , viewed in the longitudinal direction, on the opposite side to the coupling rod connection section 139 relative to the center point, seen in the longitudinal direction, of the steering knuckle 11 is arranged. A ball joint, for example, is located on an upper surface of the steering rod connection section. 113provided, and a top section of the handlebar 50 It is connected to this ball joint in a pivoting manner. < Damper >

[0078] As in Fig. As shown in 1, the damper includes 14 a damper body 141 , which can be extended in its longitudinal direction, as well as a spring 142 , which thus extend around an upper half of the damper body 141 is arranged so that these are the damper body 141 in the direction of its expansion.

[0079] The damper 14 is provided to be inserted into an opening section that is defined by the corresponding arms (the front arm section) 123 , the posterior arm section 124 and the connecting arm section 125 ) enclosed, to be inserted. An upper end section of the damper body 141 is with the upper end section of the side surface 3a of the front section of the vehicle body3 connected and a lower end section of the damper body 141 is connected to the damper connection section 137 of the lower arm 13 tied together.

[0080] In particular, the upper end section and the lower end section of the damper body 141 insertion holes 141a , 141b provided, which extend essentially in the longitudinal direction of the vehicle, and tubular elastic bushings DB are inserted into the insertion holes 141a , 141b fitted.

[0081] Meanwhile, the suspension tower 40 provided to be attached to an upper section of each of the left and right sides of the front vehicle body section 3 (i.e., on an upper section of each of the front side frames) 31 ) to stand. A retaining bracket 41 , which forms the upper end section of the damper body 141The support or bearing is located on a side surface of the damper body that is on the outside side in the width direction of the vehicle. 141 provided (i.e. at an upper end section of the side surface) 3a of the front section of the vehicle body 3 ).

[0082] The retaining bracket 41 supports or carries the two end sections of the rotation axis section. 41a , which extends essentially in the longitudinal direction of the vehicle. The rotation axis section 41a is rotatably inserted into a center point of the elastic bushing DB, which is inserted into the insertion hole 141a of the upper end section of the damper body 141 is fitted. The retaining bracket 41In plan view, it is configured in a rough U-shape such that its respective front end section and its respective rear end section are substantially bent outwards in the width direction of the vehicle, and its front end section and its rear end section are connected to a front end section and a rear end section of the rotation axis section. 41a connected, with the two end sections of the rotation axis section 41a (i.e., the front and rear end sections described above) are supported or carried. Thus, the upper end section of the damper body 141 through the retaining bracket 41 supported or carried in such a way that the upper end section of the damper body 141 with the upper end section of the side surface 3a of the front section of the vehicle 3 is essentially connected in a way that allows it to rotate in the lateral direction of the vehicle.

[0083] Meanwhile, the lower end section of the damper body 141 at the damper connection section 137 Rotatably connected in the lateral direction of the vehicle by inserting a rotation axis section (not shown) which extends essentially in the longitudinal direction into a central hole of the elastic bushing DB, which is inserted into the insertion hole 141b is fitted and the two front and rear end sections of the rotation axis section described above are attached to the damper connection section 137 of the lower arm 13 supports or carries. < Stabilizer >

[0084] As in Fig. As shown in 1, the stabilizer includes 15 a stabilizer body 151 as well as a pair of beam-shaped connecting sections 152 , which are the two ends of the stabilizer body 151 and the stabilizer connection sections 138of the right and left lower arm 13 connect. Fig. 1 represents only a left-hand connecting section 152 dar.

[0085] The stabilizer body 151 It is a beam element that extends in the width direction of the vehicle and is configured such that both end sections extend obliquely outwards and rearwards in a longitudinal direction. The two sections on either side of a central point, viewed in the longitudinal direction, of the stabilizer body. 151 are with mounting parts 153 Rotatably attached to the front section of the vehicle body. Fig. 1 represents only the left-hand connecting section 152 dar.

[0086] In this state, the two end sections, viewed in the longitudinal direction, of the stabilizer are 151The stabilizers are arranged in front of and above the lower arm(s) 13 and are configured to be essentially rotatable in the vertical direction. Furthermore, in this state, the two end sections of the stabilizer, viewed in the longitudinal direction, are 151 via the connecting sections 152 with the stabilizer connection sections 138 lower arms 13 tied together. < Coupling rod >

[0087] As in the Fig. 3 - Fig. As shown in 5, the coupling rod is 16 Configured in a linear beam shape. On an upper surface of a front end section, viewed in a longitudinal direction, of the coupling rod. 16 is a recess section 16u provided, to which a swivel connection with a ball joint is attached 126a consists of the connecting section of the coupling rod. 126 of the upper arm 12is provided. On a lower surface of a rear end section, viewed in the longitudinal direction, of the coupling rod. 16 is a recess section 16d provided, to which a swivel connection with a ball joint is attached 139a consists of the connecting section of the coupling rod. 139 of the lower arm 13 is provided.

[0088] Here, the reference symbol denotes DK the Fig. 5 elastic covers that fit over the ball joints 126a , 139a lay down. The elastic covers DK are configured in a tubular shape and between end sections of the coupling rod 16 and the coupling rod connecting sections 126 , 139 arranged and around the ball joints 126a , 139a attached around it.

[0089] Thus, the coupling rod 16 via the ball joint 126apivotable at its front end section with the coupling rod connecting section 126 of the upper arm 12 connected and via the ball joint 139a pivotable at its rear end section with the coupling rod connecting section 139 of the lower arm 13 connected. Accordingly, the coupling rod is 16 , which the upper arm 12 and the lower arm 13 coupled together, configured to be inclined in such a way that their front side is positioned at a higher level than their rear side. Furthermore, the coupling rod 16 configured according to the vertical rotation of the corresponding arms 12 , 13 to be rotatable in the opposite direction. Thus, the coupling rod couples 16 the corresponding arms 12 , 13 , without blocking the vertical rotation of the corresponding arms. Furthermore, the coupling rod 16positioned closer to the vehicle body than the steering knuckles 11 the corresponding arms 12 , 13 .

[0090] The suspension device 1 for the vehicle according to the present invention comprises the steering knuckle 11 , which supports or carries the wheel, the upper arm 12 , which is vertically rotatable and connected to the vehicle body and pivots the upper section of the steering knuckle 11 supports or carries the lower arm 13 , which is below the upper arm 12 is provided and connected to the vehicle body in a vertically rotatable manner, as well as the coupling rod 16 , which the upper arm 12 and the lower arm 13 couples with each other, with the coupling rod 16 is configured to be inclined in the longitudinal direction of the vehicle and rotatable with the upper arm 12 or the lower arm 13 to be connected.

[0091] According to this structure, since the dome rod 16 is provided, which is configured as described above, ensuring compliance in the longitudinal direction (i.e., the displacement towards each other, in the same direction as the longitudinal direction of the vehicle, of the corresponding arms). 12 , 13 is ensured) and ensuring the caster stiffness in a compatible manner without impairing the suspension function.

[0092] In particular, since the coupling rod 16 , which the upper arm 12 and the lower arm 13 coupled together, is configured to be inclined in the longitudinal direction of the vehicle, by means of the coupling rod 16 to prevent the upper arm 12 and the lower arm 13During braking, they are displaced in the opposite direction to the longitudinal direction of the vehicle, thus ensuring caster stiffness. Furthermore, since it is unnecessary for the DB rubber bushings, which are generally located between the vehicle body and the body-to-body connecting sections, to be displaced... 122a , 122b , 132a , 132b of the upper arm 12 and the lower arm 13 are manufactured in such a way that they are hard, ensuring compliance in the longitudinal direction of the suspension provided by the DB rubber bushings.

[0093] Furthermore, since the coupling rod 16 rotatable with the upper arm 12 or the lower arm 13 is connected, the coupling rod 16 the upper arm 12 and the lower arm 13 couple with each other without affecting the vertical rotation of the upper arm 12 and the lower arm 13to impair its suspension function.

[0094] Furthermore, since the coupling rod 16 via the ball joints 126a , 139a with the upper arm 2 and the lower arm 3 connected, a range of motion of the connecting sections of the coupling rod 16 to the upper arm 12 and to the lower arm 13 to be enlarged. This means that the connecting sections of the coupling rod 16 not only can they be moved around the axial line of the connecting sections (around the axial line of the ball joints) 126a , 139a ), but also in the axial direction of the connecting sections (i.e., in the longitudinal direction of the vehicle). Accordingly, the flexibility of a connection position or a connection angle at which the coupling rod 16 with their respective arms 12 , 13 The connection can be improved.

[0095] Furthermore, since the coupling rod 16 is configured, the upper arm 12 and the lower arm 13 to couple them in the inclined state in which the front side of these, seen in the longitudinal direction of the vehicle, is arranged at a higher level than the rear side of these, seen in the longitudinal direction of the vehicle, during braking, in which the upper arm 12 and the lower arm 13 in the opposite direction to the longitudinal direction of the vehicle, the tensile load instead of the bending load is transferred to the coupling rod 16 to be applied so that the weight reduction of the coupling rod 16 can be achieved.

[0096] Likewise, since the front end section of the coupling rod 16 with the front side of the anterior arm section 123 of the upper arm 12 is connected, the coupling rod 16 , which the upper arm 12and the lower arm 13 coupled together, be configured to tilt in a more suitable manner in the longitudinal direction of the vehicle, so that the upper arm can be efficiently prevented from 12 and the lower arm 13 through the coupling rod 16 can be shifted in the opposite direction to the longitudinal direction of the vehicle.

[0097] Furthermore, since the rear end section of the coupling rod 16 with the rear side of the posterior arm section 134 of the lower arm 13 is connected, the coupling rod 16 , which the upper arm 12 and the lower arm 13 coupled together, be configured to tilt in a more suitable manner in the longitudinal direction of the vehicle, so that the upper arm can be efficiently prevented from 12 and the lower arm 13 through the coupling rod 16can be shifted in the opposite direction to the longitudinal direction of the vehicle.

[0098] Furthermore, the steering knuckle 11 with the steering rod connection section 113 equipped with the handlebar 50 to rotate the steering knuckle 11 connected in the transverse direction of the vehicle, and the coupling rod connection section 139 of the lower arm 13 , on which the coupling rod 16 The connection is on the opposite side, viewed in the longitudinal direction of the vehicle, to the steering rod connection section. 113 relative to the center point, as seen in the longitudinal direction of the vehicle, of the steering knuckle 11 arranged. Thus, the coupling rod can 16 with the lower arm 13 be connected without entering the steering column 50 to intervene.

[0099] Similarly, since the lower arm 13with the stabilizer connection section 138 is equipped with the stabilizer 15 is connected, and the coupling rod connection section 139 of the lower arm 13 , on which the coupling rod 16 connected, on the opposite side, viewed in the longitudinal direction of the vehicle, to the stabilizer connection section 138 of the lower arm 13 is arranged the coupling rod 16 with the lower arm 13 be connected without entering the stabilizer 15 to intervene.

[0100] Furthermore, the coupling rod 16 with the corresponding sections of the upper arm 12 and the lower arm 13 connected, each positioned closer to the vehicle body side than to the steering knuckle side, so that the weight of the coupling rod can be prevented 16a gentle vertical movement of the corresponding arm 12 , 13 influenced in an inappropriate manner. < Modified Example 1 >

[0101] While the embodiment described above uses the coupling rod 16 describes which is configured, the upper arm 12 and the lower arm 13 To couple them together in the state where the front side of these, seen in the longitudinal direction of the vehicle, is arranged at a higher level than the rear side of these, seen in the longitudinal direction of the vehicle, the coupling rod can 16 also be configured in such a way as to include the upper arm 12 and the lower arm 13 to couple in the state in which the front side of this, viewed in the longitudinal direction of the vehicle, is arranged at a lower level than the rear side of this, viewed in the longitudinal direction of the vehicle, as shown in Fig. 6. In this case, the coupling rod connection section 126 of the upper arm 12 on one posterior side of the posterior arm section 124 of the upper arm 12 provided. Furthermore, the coupling rod connection section is 139 of the lower arm 13 on one front side of the anterior arm section 133 of the lower arm 13 provided. In this case, pressure is applied to the coupling rod during braking. 16 A pressure load is applied to prevent the respective arms from... 12 , 13 shifted in the opposite direction to the longitudinal direction of the vehicle.

[0102] This can include both the coupling rod and the coupling rod. 16 , which is arranged in the inclined state in which the front side is positioned at a higher level than the rear side, as well as the coupling rod 16, which is arranged in the inclined state in which the front side is positioned at a lower level than the rear side, be configured with the corresponding arms 12 , 13 to couple. In this case, these two coupling rods 16 provided in such a way that they are offset from each other in the lateral direction of the vehicle. < Modified Example 2 >

[0103] In a modified example 2, as in Fig. Figure 7 shows the coupling rod connection section. 126 of the upper arm 12 configured, extending essentially horizontally forward from the front side of the anterior arm section 123 of the upper arm 12 to protrude, and its front end face forms a roughly vertical flat surface pointing towards the front of the vehicle. The coupling rod connecting section 139 of the lower arm 13is configured to extend essentially horizontally backwards from the rear side of the posterior arm section 134 of the lower arm 13 to protrude, and its rear end face forms a roughly vertical flat surface that points towards the rear of the vehicle. The coupling rod 16 is essentially configured in a linear beam shape, with a front end section being essentially bent upwards and a rear end section being essentially bent downwards.

[0104] According to this modified example 2, by configuring the coupling rod 16 in such a way that its front end section and its rear end section are bent upwards and downwards respectively, the front end section and the rear end section of the coupling rod 16 essentially parallel to the front end face of the coupling rod connecting section 126and to the rear end face of the coupling rod connection section 139 This allows for a connecting angle at which the front end section and the rear end section of the coupling rod are arranged. 16 with the front end face of the coupling rod connecting section 126 and the rear end face of the coupling rod connecting section 139 are connected, and are caused to fall into a suitable area.

[0105] Furthermore, in the modified example 2, as in Fig. 8 shows the front end section and the rear end section of the coupling rod. 16 with the front end face of the coupling rod connecting section 126 and the rear end face of the coupling rod connecting section 139 via pillow block bearings PB instead of the corresponding ball joints 126a or 139a connected. This means that the insertion holes 16a, which extend essentially in the longitudinal direction of the vehicle, corresponding to the front end section and the rear end section of the coupling rod 16 provided and the pillow blocks PB in the corresponding insertion holes 16a are arranged.

[0106] The pillow bearing PB includes a tubular section that accommodates the pillow block bearing PB1 as well as a pillow block PB2 , which is pivotable in the section receiving the pillow block bearing PB1 The section that receives the pillow bearing is attached. PB1 is in the insertion hole 16a each consisting of the front end section and rear end section of the coupling rod 16 fastened. An insertion hole. PB3 is essentially at the center of the pillow block body PB2 provided. The in Fig. 8 reference symbols shown DK denotes an elastic cover that forms a connecting section of the section receiving the pillow block bearing. PB1 and the pillow block body PB2 covered.

[0107] The pillow block body PB2 , which is located at the rear end section of the coupling rod 16 It is attached to the rear end face of the coupling rod connecting section. 139 secured by a bolt BT , which goes into the insertion hole PB3 inserted and roughly perpendicular to the rear end face of the coupling rod connection section 139 of the lower arm 13 is fixed. Likewise, the pillow block body is PB2 , which is located at the front end section of the coupling rod 16 is attached to the front end face of the coupling rod connecting section. 126 Thus, the front end section and the rear end section of the coupling rod are fixed. 16 via the pillow bearings PB swiveling with the coupling rod connecting sections 126 , 139 tied together.

[0108] In modified example 2, as in the embodiment described above, the front end section and the rear end section of the coupling rod can be used. 16 pivotable with the front end face of the coupling rod connection section 126 or the rear end face of the coupling rod connection 139 be connected. < Modified Example 3 >

[0109] In the modified example 2 described above, the pillow block bearing is replaced by... PB , as in the Fig. 7 and Fig. 9 shown, an elastic bushing DB usable. In this case, the elastic bushings are used. DB into the insertion holes 16a of the front end section and the rear end section of the coupling rod 16 instead of the pillow blocks PB inserted. The elastic bushing DB includes an outer tubular section DB1 , an inner tubular section DB2 , which is coaxial within the outer tubular section DB1 is arranged, as well as a tubular elastic link DB3 , which is between the outer tubular section DB1 and the inner tubular section DB2 is provided.

[0110] The elastic bushing DB , which are located at the rear end section of the coupling rod 16 It is attached to the rear end face of the coupling rod connecting section. 139 through a bolt BT attached, which is in the inner tubular section DB2 inserted and roughly perpendicular to the rear end face of the coupling rod connection section 139 of the lower arm 13 is fixed. Likewise, the elastic bushing is DB , which are located at the front end section of the coupling rod 16 is attached to the front end face of the coupling rod connecting section. 126 Fixed. Thus, the front end section and the rear end section of the coupling rod are fixed. 16 about the elastic bushings DB with the front end face of the coupling rod connecting section 126 or the rear end face of the coupling rod connecting section 139 tied together. < Modified Example 4 >

[0111] While the upper arm 12 In the top view of the embodiment described above, which is configured in the rough A-shape, there is a roughly V-shaped upper arm. 12 usable as in Fig. 10 is shown. In this case, the upper arm corresponds to 12 the arm that is configured by omitting the connecting arm section 125 from the upper arm 12 of the embodiment described above. < Modified Example 5 >

[0112] While the lower arm 13 In the top view of the embodiment described above, which is configured in the rough A-shape, there is a roughly L-shaped lower arm. 13L usable as in the Fig. 11 and Fig. 12 is shown. In this case, the lower arm is shown. 13L with a steering knuckle connection section 131 equipped with the lower section of the steering knuckle 11 is connected, as well as with a pair consisting of a front and a rear body connection section (a front body connection section) 132a and a rear vehicle body connection section 132b ), which is connected to the lower section of the side surface 3a of the front section of the vehicle body 3 are connected to a lateral arm section 133L , which connects the steering knuckle section 131and the front vehicle body connecting section 132a connects a vertical arm section 134L , which is the lateral arm section 133L and the rear vehicle body connection section 132b connects, with a damper connecting arm section 137 , which has a forked lower end section of the damper 14 is connected to a stabilizer connection section 138 , where a connection is made to an end section of the stabilizer 15 consists of a coupling rod connection section 139 , where a connection is made with the lower end section of the coupling rod 16 consists of the steering knuckle connection section. 131 , the front vehicle body connecting section 132a and the rear vehicle body connection section 132b Configured similarly to the embodiment described above.

[0113] The lateral arm section 133L is configured to extend essentially in the width direction of the vehicle, and an outer end section thereof, seen in the width direction of the vehicle, is connected to the steering knuckle link section 131 connected, and an inner end section thereof, seen in the width direction of the vehicle, is connected to the front vehicle body connecting section 132a connected. The vertical arm section 134L is configured to radiate from the surroundings of an inner end section, viewed in a longitudinal direction, of the lateral arm section 133L to extend backwards, and a posterior end section, viewed in a longitudinal direction, of the lateral arm section 134L is essentially curved inwards in the width direction of the vehicle and connected to the rear vehicle body connecting section 132bconnected. A width, seen in the lateral direction of the vehicle, of the vertical arm section. 134L It is configured in such a way that the width of its rear side gradually tapers.

[0114] The damper connection section 137 is provided to be positioned on the inner side of the steering knuckle connection section. 131 of the lateral arm section 133L is located. An insertion hole, which is essentially longitudinal, is located at the damper connection section. 137 A fastening element (for example, a bolt) is provided. It is inserted into the insertion hole. 141b of the lower end section of the damper body 141 inserted and at the insertion hole of the damper connection section described above 137 fixed, with the lower end section of the damper body 141 with the damper connection section 137is connected in a way that allows it to rotate in the width direction of the vehicle.

[0115] The stabilizer connection section 138 is provided to be positioned near a center point, as seen in the longitudinal direction, of the lateral arm section 133L (for example, at an inner position adjacent to or near the damper connection section) 137 ) to stand.

[0116] The coupling rod connecting section 139 is at a position near a center point, seen in the longitudinal direction, of the vertical arm section 134L Provided. The coupling rod connection section. 139 is configured as a base section, which is configured to be tilted backwards. An upper end face of the coupling rod connection section. 139is configured to be tilted backwards and downwards, where a ball joint (not shown) is provided to which the lower end section of the coupling rod is attached. 16 roughly vertically connected.

[0117] Since the upper end surface of the coupling rod connection section 139 As configured as described above, the upper end face described above is essentially parallel to the coupling rod. 16 , so that a connecting angle to which the coupling rod 16 with the coupling rod connecting section 139 is connected, can be caused to fall into a suitable area.

[0118] In modified example 5, the upper arm 12 , similar to the embodiment described above, configured in the top view in a rough A-shape. Furthermore, the upper arm 12 slightly in front of the lower arm 13Larranged in a state in which the upper arm 12 and the lower arm 13L with the side surface 3a of the front section of the vehicle body 3 are connected. Accordingly, even if the coupling rod 16 is provided to cover the front side of the anterior arm section 123 and the midpoint, seen in the longitudinal direction, of the lower arm 13L , to couple, the connecting rod 16 must be configured to be sufficiently inclined in the longitudinal direction of the vehicle.

[0119] While the lower arm 13L in modified example 5 is configured such that the lateral arm section 133L This arm is positioned on the front side of the vehicle. 133L It can also be positioned on the rear side of the vehicle. Furthermore, while the lower arm 13LIn the modified example 5, the upper arm is configured in the rough L-shape in the top view. 12 In the top view, it can also be configured in a rough L-shape, or the two arms 12 , 13L They can be configured in a rough L-shape when viewed from above.

[0120] The present invention is not limited to the embodiment described above and further modifications or improvements may be made within the scope of the present invention as defined by the attached claims. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] JP H07246815 A

[0005]

Claims

[1] Suspension device in the form of a double wishbone for a vehicle, comprising: a steering knuckle (1) that supports or carries a wheel; an upper arm (12) which is essentially vertically rotatable and connected or connectable to a vehicle body and which pivotably supports or carries an upper section of the axle stub (11); a lower arm (13) which is provided below the upper arm (12) and is substantially vertically rotatable and connected to the vehicle body, and a coupling rod (16) that couples the upper arm (12) and the lower arm (13), wherein the coupling rod (16) is configured to be inclined in a longitudinal direction of the vehicle and to be rotatably connected to the upper arm (12) and the lower arm (13), respectively. [2] Suspension device for the vehicle according to claim 1, wherein the coupling rod (16) is connected to the upper arm (12) or the lower arm (13) via a ball joint, a pillow block bearing or a rubber bushing. [3] Suspension device for the vehicle according to claim 1 or 2, wherein the coupling rod (16) is configured to couple the upper arm (12) and the lower arm (13) in an inclined state in which a front side of the latter, as seen in a longitudinal direction of the vehicle, is arranged at a higher level than a rear side of the former, as seen in the longitudinal direction of the vehicle. [4] Suspension device for the vehicle according to claim 3, wherein the upper arm (12) comprises a front arm section (123) and a rear arm section (124), and wherein a front end section of the coupling rod (16) is connected to a front side of the front arm section (124) of the upper arm (12), and / or the lower arm (13) comprises a front arm section (133) and a rear arm section (134), and wherein a rear end section of the coupling rod (16) is connected to a rear side of the rear arm section (134) of the lower arm (16). [5] Suspension device for the vehicle according to claim 1 or 2, wherein the coupling rod (16) is configured to couple the upper arm (12) and the lower arm (13) in an inclined state in which a front side of the latter, as seen in a longitudinal direction of the vehicle, is arranged at a lower level than a rear side of the former, as seen in the longitudinal direction of the vehicle. [6] Suspension device for the vehicle according to claim 5, wherein the upper arm (12) comprises a front arm section (123) and a rear arm section (124), and wherein a rear end section of the coupling rod (16) is connected to a rear side of the rear arm section (124) of the upper arm (12), and / or the lower arm (13) comprises a front arm section (133) and a rear arm section (134), and wherein a front end section of the coupling rod (16) is connected to a front side of the front arm section (133) of the lower arm (13). [7] Suspension device for the vehicle according to one of the preceding claims, wherein the upper arm (12) is equipped with a coupling rod connection section (126) to which a connection with the connecting rod (16) exists, the coupling rod connection section (126) of the upper arm (12) is configured to extend substantially horizontally from the upper arm (12) and / or the lower arm (13) is equipped with a coupling rod connection section (13) to which a connection with the connecting rod (16) exists, wherein the coupling rod connection section (139) of the lower arm (13) is configured to extend substantially horizontally from the lower arm (13), and / or the coupling rod (16) is configured substantially in a linear beam shape, wherein one end section of the latter is bent towards the upper arm (12) and the other end section of the former is bent towards the lower arm (13). [8] Suspension device for the vehicle according to one of the preceding claims, wherein the steering knuckle (11) is equipped with a steering rod connection section (113) to which a steering rod (50) for rotating the steering knuckle (11) in a transverse direction of the vehicle is connected, and / or a coupling rod connection section (139) of the lower arm (13) to which the coupling rod (16) is connected is arranged on an opposite or opposite side, as seen in a longitudinal direction of the vehicle, to the steering rod connection section relative to a center point, as seen in the longitudinal direction of the vehicle, of the steering knuckle. [9] Suspension device for the vehicle according to one of the preceding claims, wherein the lower arm (13) is equipped with a stabilizer connection section (138) to which a stabilizer (15) is connected, and a coupling rod connection section (139) of the lower arm (13) to which the coupling rod (16) is connected is arranged on an opposite side, as seen in the longitudinal direction of the vehicle, to the stabilizer connection section (138) of the lower arm (13). [10] Suspension device for the vehicle according to one of the preceding claims, wherein the coupling rod (16) is connected to corresponding sections of the upper arm (12) and the lower arm (13), each positioned closer to a side of the vehicle body than to a side of the steering knuckle. [11] Method for supporting or carrying a wheel on a vehicle, comprising the steps: Providing a steering knuckle (1) for attaching a wheel; pivotable support or carrying of an upper section of the axle journal (11) by an upper arm (12), pivotable support or carrying of a lower section of the axle journal (11) by a lower arm (13), and Coupling the upper arm (12) and the lower arm (13) by means of a coupling rod (16), wherein the coupling rod (16) is pivotably connected to the upper arm (12) and the lower arm (13) in order to be inclined in a longitudinal direction of the vehicle. [12] Method according to claim 11, wherein the coupling rod (16) is connected to the upper arm (12) or the lower arm (13) via a ball joint, a pillow block bearing or a rubber bushing.

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