JP5126373B2 - Stabilizer device - Google Patents

Description

  The present invention relates to a stabilizer device capable of changing roll rigidity.

Patent Documents 1 and 2 describe a stabilizer device that can change roll rigidity. Among them, in the stabilizer device described in Patent Document 1, the stabilizer bar is connected to the vehicle body side member at the intermediate portion, and is connected to the wheel side member via the cylinder device at both ends. In the cylinder device, one of the cylinder body and the piston is connected to the wheel side member, and the other is connected to the stabilizer bar. The piston is moved relative to the cylinder body with the relative movement in the vertical direction between the wheel side member and the vehicle body side member, but the relative movement is prevented after reaching the movement limit. In the region where the relative movement between the piston and the cylinder body is allowed, the roll rigidity of the suspension is reduced, and in the region where the relative movement is prevented, the roll rigidity is increased.
In the stabilizer device described in Patent Document 2, the stabilizer bar is divided into two, and the state can be switched between a state in which relative rotation of the stabilizer bar with respect to the other one of the divided stabilizer bars is allowed and a state in which the stabilizer bar is prevented. A device is provided. The roll rigidity is reduced in a state where the relative rotation is allowed, and the roll rigidity is increased in a state where the relative rotation is prevented.
JP 2000-177354 A Japanese Patent Laid-Open No. 2001-233034

  An object of the present invention is to make roll rigidity variable with a simple structure.

Means and effects for solving the problem

A stabilizer device according to claim 1 of the present application includes: (a) a stabilizer bar extending between a left wheel and a right wheel of a vehicle and coupled to a vehicle body side member via a vehicle body side coupling portion; and (b) the stabilizer bar. Are connected to each other at both ends via a bar-side connecting portion, and at the other end, a member corresponding to the wheel-side member of the left wheel and the wheel-side member of the right wheel. And a stabilizer link connected by a wheel side connecting portion, wherein at least one of the bar side connecting portion and the wheel side connecting portion is elastically deformed with a change in a roll angle of the vehicle. Including an elastic member that changes roll rigidity,
The bar-side connecting portion is attached to one of the stabilizer link and the stabilizer bar so as not to be relatively movable, and is attached to the other of the stabilizer link and the stabilizer bar so as not to be relatively movable. In a state that allows relative movement with the second member, each of the stabilizer links and the stabilizer bar are coupled,
In each of the left wheel and the right wheel, the wheel side connecting portion includes a first member attached to one of the stabilizer link and the wheel side member so as not to be relatively movable, the stabilizer link, and the The stabilizer link and the wheel side member are respectively connected in a state that allows relative movement with the second member attached to the other side of the wheel side member so as not to be relatively movable,
In the at least one of the bar side connecting portion and the wheel side connecting portion,
The first member includes: (a) a plate-like member ; and (b) a pair of brackets that are disposed on both sides of the plate-like member and are moved in accordance with the movement of the plate-like member. And the second member includes (i) a shaft-like member penetrating the plate-like member, and (ii) a pair of retainers movable along with the movement of the shaft-like member, and the elastic member Is generally cylindrical, and on both sides of the plate-like member , between each of the pair of brackets and each of the pair of retainers in a state of being penetrated by the shaft-like member , respectively. The outer peripheral surface of the portion on the plate-like member side is in contact with the inner peripheral surface of the bracket, the outer peripheral surface of the portion on the retainer side is held away from the inner peripheral surface of the bracket, and the pair of Each of the brackets is provided with a protrusion on the inner peripheral surface.

A stabilizer device according to claim 2 of the present application is (a) extending between a left wheel and a right wheel of a vehicle.
A stabilizer bar coupled to the vehicle body side member via the vehicle body side coupling portion, and (b) the stabilizer
It is connected to both ends of the Isa bar via a bar side connecting portion at each one end, and at the other end, it corresponds to the wheel side member of the left wheel and the wheel side member of the right wheel. A stabilizer device including a stabilizer link connected to a member by a wheel side connecting portion, wherein at least one of the bar side connecting portion and the wheel side connecting portion is elastic with a change in a roll angle of the vehicle. Including an elastic member that deforms and changes the roll stiffness,
The bar-side connecting portion is attached to one of the stabilizer link and the stabilizer bar so as not to be relatively movable, and is attached to the other of the stabilizer link and the stabilizer bar so as not to be relatively movable. In a state that allows relative movement with the second member, each of the stabilizer links and the stabilizer bar are coupled,
In each of the left wheel and the right wheel, the wheel side connecting portion includes a first member attached to one of the stabilizer link and the wheel side member so as not to be relatively movable, the stabilizer link, and the The stabilizer link and the wheel side member are respectively connected in a state that allows relative movement with the second member attached to the other side of the wheel side member so as not to be relatively movable,
In the at least one of the bar side connecting portion and the wheel side connecting portion,
The first member includes: (a) a plate-like member; and (b) a pair of brackets that are disposed on both sides of the plate-like member and are moved in accordance with the movement of the plate-like member. And the second member includes (i) a shaft-like member that penetrates the plate-like member, and (ii) a pair of retainers that can move along with the movement of the shaft-like member, and The elastic member has a generally cylindrical shape, and is formed on both sides of the plate-like member with each of the pair of brackets and each of the pair of retainers in a state of being penetrated by the shaft-like member. In between, the outer peripheral surface of the plate-like member side portion is in contact with the inner peripheral surface of the bracket, the outer peripheral surface of the retainer side portion is held in a state of being separated from the inner peripheral surface of the bracket, One or more grooves extending in the axial direction are formed on the outer peripheral surface of The
In the stabilizer device according to claim 3, the elastic member is a member formed of rubber or the like.

In the stabilizer device according to the present invention, when the vehicle rolls and the vertical distance between the wheel side member and the vehicle body side member changes in the opposite direction between the left wheel and the right wheel, the stabilizer bar is twisted. Thus, a restoring force is generated. In addition, the elastic member is elastically deformed at the connecting portion by the vertical force acting between the stabilizer bar and the stabilizer link or the vertical force acting between the stabilizer link and the wheel side member. Due to the deformation, its own spring constant changes. As a result, the roll rigidity of the vehicle suspension can be changed.
In designing the suspension device, the roll rigidity as designed is not realized only by the connecting portion of the stabilizer device, but comprehensively realized by a stabilizer bar, a suspension link, a suspension spring, a shock absorber, and the like. Therefore, providing the elastic member at the connecting portion of the stabilizer device does not always realize the roll rigidity as designed in the suspension device. However, if it is possible to obtain nonlinear roll rigidity at the connecting portion of the stabilizer device, it becomes easy to design the suspension apparatus so that the roll rigidity as designed can be obtained in consideration thereof. .
Thus, in the stabilizer device according to the present invention, the roll rigidity can be made variable by providing the connecting portion with an elastic member whose spring constant changes due to its own elastic deformation and changes the roll rigidity. Yes, compared to the stabilizer devices described in Patent Documents 1 and 2, the roll rigidity can be made variable with a simple structure. Moreover, it can implement | achieve at low cost rather than the stabilizer apparatus of patent document 1,2.
The elastic member elastically deforms with the roll of the vehicle, but the amount of elastic deformation increases with an increase in the amount of roll. For example, when the elastic member has a characteristic that the spring constant is larger than when it is small when the elastic deformation amount is large, the roll amount is large, and when the elastic deformation amount is large, the roll amount is small and elastic. The roll rigidity can be increased as compared with the case where the deformation amount is small.
As a result, for example, if the stabilizer device according to the present invention is provided on the front wheel side, and the roll stiffness distribution on the front wheel side is increased when the roll amount is large, the vehicle steer characteristic can be made an understeer characteristic, Travel stability during turning can be improved. In addition, when the stabilizer device according to the present invention is provided on both the front wheel side and the rear wheel side, when the roll amount is small and the elastic deformation amount of the elastic member is small, the stabilizer device with small roll rigidity is set as the front wheel side. If it is provided on both the rear wheel side, the riding comfort when the roll amount is small can be improved.
Furthermore, if an elastic member is provided in at least one of the bar side connecting portion and the wheel side connecting portion as in the stabilizer device according to the present invention, the elastic member is provided in both the bar side connecting portion and the wheel side connecting portion. Riding comfort can be improved as compared with the case where it is not possible.

The elastic member may have a shape in which the area of the free surface is smaller than when the elastic deformation amount is large and smaller. Moreover, it can be set as the member formed with rubber | gum or its analog.
In the case where the elastic member is rubber or the like, generally, a surface in which deformation of the surface (hereinafter referred to as a constraining surface) to which deformation is constrained is not constrained relative to the area Sa (hereinafter referred to as constraining surface area) (
The ratio (Sf / Sa) of area Sf (hereinafter referred to as free surface area) of the free surface)
It is known that the smaller the is, the larger the spring constant is. The constraining surface area is determined in advance by the structure of the connecting portion, and may be constant even when the vehicle rolls, or may increase as the free surface area decreases. If the elastic deformation amount is large and the shape is such that the free surface area is smaller than when it is small, the spring constant can be increased and the roll rigidity can be increased when the elastic deformation amount is large. It becomes possible.
The elastic member may have a shape in which the free surface area gradually decreases as the amount of elastic deformation increases, or may have a shape that continuously decreases. For example, in the case of a shape in which the free surface area continuously decreases, the spring constant increases continuously as the elastic deformation increases, and the roll rigidity increases continuously. Further, when the free surface area has a shape that changes stepwise depending on whether the elastic deformation amount is smaller than the set deformation amount or more than the set deformation amount, that is, the elastic deformation amount has reached the set deformation amount. In the case where the free surface area becomes smaller and the elastic deformation amount further increases, the free surface area does not become smaller.If the elastic deformation amount is not less than the set deformation amount, the spring constant Can be made large and substantially constant. Furthermore, it is possible to form a shape in which the free surface area changes in a mode in which the above-described two modes are combined. For example, when the elastic deformation amount of the elastic member reaches the set deformation amount, the free surface area rapidly decreases, but thereafter, the free surface area gradually decreases as the elastic deformation amount increases. The spring constant increases rapidly when the amount of elastic deformation reaches the set amount of deformation, but then increases as the amount of elastic deformation increases.
As the elastic member, for example, one made of an organic polymer material such as rubber, urethane, or sandprene (registered trademark) can be used. For example, the elastic member may have a lateral elastic modulus of 3 to 30 kg / cm ² .
In the stabilizer device according to the present invention, the bar-side connecting portion includes a first member attached to one of the stabilizer link and the stabilizer bar so as not to be relatively movable, and the stabilizer link and the stabilizer bar. Each of the stabilizer links is connected to the stabilizer bar in a state of allowing relative movement with a second member that is attached to the other side so as not to be relatively movable, and the wheel side connecting portion is connected to the left wheel. In each of the right wheels, a first member attached to one of the stabilizer link and the wheel side member so as not to be relatively movable, and a relative movement to the other of the stabilizer link and the wheel side member The stabilizer link and the front in a state that allows relative movement with the second member that is impossiblely attached. Wheel-side members are connected to each other, and the elastic member is a member that elastically deforms with the relative movement of the first member and the second member at least in the longitudinal direction of the stabilizer link. The Further, the elastic member is provided on each of the first member and the second member so as not to be relatively movable.
When the first member and the second member are relatively moved by rolling of the vehicle, the elastic member is elastically deformed. When the roll amount of the vehicle is large, the relative movement amount between the first member and the second member is larger than when the vehicle is small, the elastic deformation amount of the elastic member is large, and the spring constant is large.
In the bar-side connecting portion, the first member is attached to either one of the stabilizer bar and the stabilizer link so as not to be relatively movable, but the first member is provided integrally with either one. It may be a separate one, but it may be fixed so as not to be relatively movable by welding or the like. In addition, the first member may be attached in a state in which the first member is always relatively moved in accordance with the relative movement of either one, even if it is not fixed to either one. The same applies to the second member as well as the first member and the second member in the wheel side connecting portion. The elastic member may be provided on the first member and the second member so as not to move relative to each other by adhesion or the like, or may be provided on the first member and the second member so as not to move relative to each other by press fitting. Note that “relative movement” includes linear relative movement, curvilinear relative movement (relative rotation), and the like.
In the case where an elastic member is provided between the first member and the second member, the cavity (commonly referred to as tickling) is elastic due to relative movement between the first member and the second member due to the roll of the vehicle. It is provided at a position or state where the size, shape, etc. change due to elastic deformation of the member. The cavity is a gap provided between the elastic member and at least one of the first member and the second member, a closed space formed inside the elastic member, the first member of the elastic member, An open space (through hole) having openings on both sides not facing the two members can be used, and the surfaces of the elastic member facing the gap, closed space, and open space can be free surfaces. For example, when either one of the first member and the second member is an inner cylindrical portion and the other is an outer cylindrical portion, the elastic member is a cylinder provided between the first member and the second member. Although it is a member, the cavity may be provided on the outer peripheral surface of the cylindrical member (either as a gap formed between the outer cylindrical portion) or on the inner peripheral surface (formed between the inner cylindrical portion). It may be provided inside (as a closed space formed inside the cylindrical member, or as a through hole extending in the axial direction).
Specifically, (a) when the elastic deformation amount of the elastic member reaches the set deformation amount, the gap is crushed, and a part or all of the free surface comes into contact with at least one of the first member and the second member. When the free surface area becomes small, (b) the size or shape of the gap changes as the amount of elastic deformation of the elastic member increases, and at least one of the first member and the second member contacts the free surface When the free surface area is reduced by increasing the area, (c) the free surface has a recess, and when the elastic deformation reaches the set amount of deformation, a part or all of the recess is crushed (part of the elastic member When the free surface area is reduced (by contacting the other part), (d) it may be reduced by a combination of two or more of these.
In addition, at least one of the first member and the second member has a protrusion that protrudes toward the elastic member and suppresses elastic deformation of the elastic member. The first member and the second member are usually made of a metal material, and are less likely to be elastically deformed than an elastic member such as rubber. For example, it is possible to suppress further elastic deformation of the elastic member after the elastic deformation amount of the elastic member reaches the set deformation amount and the free surface area is not further reduced. As a result, the spring constant after the elastic deformation amount reaches the set deformation amount can be increased.
For example, when the elastic deformation amount of the elastic member reaches a set deformation amount (spring constant change threshold), at least a part of the free surface of the elastic member contacts the first member, and the spring constant in the subsequent elastic deformation Can be increased by reducing the thickness of the portion where the free surface of the elastic member is formed, the spring constant after contact can be increased. In some cases, the roll rigidity cannot be changed as desired. On the other hand, if the protrusion is provided on the second member, it is substantially the same as reducing the thickness of the portion where the free surface of the elastic member is formed, and the contact is made without increasing the set deformation amount. It becomes possible to make a later spring constant into a desired magnitude | size. Note that the degree of freedom in designing the spring constant can be improved by changing one or more of the size, shape, etc. of the protrusion.
In addition, a protrusion can also have a function of positioning an elastic member.
Further, it is desirable that the stabilizer device is provided not on the rear wheel side of the vehicle but on the front wheel side. As described above, if the roll stiffness distribution on the front wheel side is increased in a state where the roll amount is large, the understeer characteristic can be obtained, and the running stability during turning can be improved.

It is a figure which shows a part of stabilizer apparatus which is one Example of this invention. It is a figure which shows a part of said stabilizer apparatus. (a) It is a cross-sectional view with respect to the axial line of the bar side connection part of the said stabilizer apparatus. (b) It is AA sectional drawing of (a) figure. It is a figure which shows the relationship between a roll amount and a grounding load in the vehicle by which the said stabilizer apparatus is mounted. (a) It is a figure which shows notionally the whole said stabilizer apparatus. (b) It is a figure which compares and shows the said stabilizer apparatus and the conventional stabilizer apparatus notionally. It is a figure which shows the relationship between a frequency and a transmission force in the vehicle by which the said stabilizer apparatus is mounted. (a) It is sectional drawing at the time of making an elastic member into another elastic member in the said connection part. (b) It is a figure which shows the relationship between a roll amount and a grounding load in the vehicle by which the stabilizer apparatus using the said connection part was mounted. (a) It is a cross-sectional view with respect to the axial line of the bar side connection part different from the connection part of the said stabilizer apparatus. (b) It is AA sectional drawing of (a) figure. It is a longitudinal cross-sectional view along the axial line of another bar side connection part from the connection part of the said stabilizer apparatus. (a) It is a cross-sectional view with respect to the axial line of the bar side connection part different from the connection part of the said stabilizer apparatus. (b) It is AA 'sectional drawing of (a) figure. It is a longitudinal cross-sectional view along the axial line of the bar side connection part different from the connection part of the said stabilizer apparatus. (a) It is a cross-sectional view with respect to the axial line of the bar side connection part different from the connection part of the said stabilizer apparatus. (b) It is AA sectional drawing of (a) figure. (a) It is a cross-sectional view with respect to the axial line of another bar side connection part other than the connection part of the stabilizer device. (b) It is AA 'sectional drawing of (a) figure. It is a longitudinal cross-sectional view along the axial line of the bar side connection part different from the connection part of the said stabilizer apparatus. It is a longitudinal cross-sectional view along the axial line of another bar side connection part from the connection part of the said stabilizer apparatus. (a) It is a perspective view of the wheel side connection part of the said stabilizer apparatus. (b) It is a longitudinal cross-sectional view along the axial line of a wheel side connection part. (a) It is a longitudinal cross-sectional view along the axial line of the wheel side connection part different from the connection part of the said stabilizer apparatus. It is a longitudinal cross-sectional view along the axial line of another wheel side connection part from the connection part of the said stabilizer apparatus. It is a longitudinal cross-sectional view along the axial line of the wheel side connection part different from the connection part of the said stabilizer apparatus. It is a cross-sectional view perpendicular | vertical to the axial line of the wheel side connection part different from the connection part of the said stabilizer apparatus.

Hereinafter, a stabilizer device according to an embodiment of the present invention will be described in detail with reference to the drawings. The outline of the stabilizer device will be described with reference to FIGS. 1 and 2, and the stabilizer device shown in FIGS. 1 and 2 is common to a plurality of embodiments of the present invention described later.
In the double wishbone type suspension shown in FIGS. 1 and 2, a stabilizer bar (sometimes referred to as a stabilizer body) 12 is provided between a right wheel 10 and a left wheel (not shown) of the vehicle. The stabilizer bar 12 generally has a U-shape, and is supported by a vehicle body side member 13a (see FIG. 5) such as a chassis frame or a body via a support portion 13b including a rubber bush at an intermediate portion. Further, at both ends thereof, the stabilizer link 16 is connected at one end thereof via a bar side connecting portion 14 (only one connecting portion is shown in FIGS. 1 and 2). The other end portion of the stabilizer link 16 is connected to a lower arm 20 as a suspension arm via a wheel side connecting portion 18.
The lower arm 20 is swingably held by a vehicle body side member (not shown) at the connecting portions 32 and 34, and the steering knuckle 38 is held swingably and relatively rotatable at the connecting portion 36. The shock absorber 40 is attached between the lower arm 20 and the vehicle body side member.
Hereinafter, each of the connection parts 14 and 18 is demonstrated.

In this embodiment, the bar-side connecting portion 14 has the structure shown in FIG. 3 and is attached to the stabilizer bar 12.
The bar-side connecting portion 14 includes an outer cylinder 52 as a first member fixed so as not to move relative to the stabilizer bar 12, an inner cylinder 54 serving as a second member fixed so as not to move relative to the stabilizer link 16, and And an elastic member 56 provided between the outer cylinder 52 and the inner cylinder 54.
The outer cylinder 52 is fitted into a fitting hole 57 formed in the stabilizer bar 12 by press fitting, and the inner cylinder 54 is fixed to the stabilizer link 16 via the bracket 60. The bracket 60 is generally U-shaped, and the stabilizer link 16 is fixed by welding or the like, and the inner cylinder 54 is fixed by a pair of bolts 62 and nuts 64 so as not to move relative to each other. The elastic member 56 is fixed to the outer cylinder 52 and the inner cylinder 54 by adhesion (inner / outer cylinder bonding type bush). Therefore, compared with the case where it is fixed by press-fitting, bushing can be suppressed.
Further, the inner cylinder 54 is bulged and provided with one or more protrusions 66 extending in the axial direction projecting outward.

The elastic member 56 is a generally cylindrical member provided between the outer cylinder 52 and the inner cylinder 54, and is bonded to the outer cylinder 52 at a part 68 of the outer peripheral surface of the elastic member 56. By being bonded to the inner cylinder 54, it is fixed to the outer cylinder 52 and the inner cylinder 54 so that they cannot move relative to each other. In addition, the remaining portion 72 of the outer peripheral surface is not bonded to the outer cylinder 52, but a gap (straight) 74 (a missing portion of the elastic member 56) is formed between the outer cylinder 52 and the outer cylinder 52.
In the present embodiment, a part 68 and an inner peripheral surface 70 of the outer peripheral surface of the elastic member 56 serve as a restraint surface 73, and face the portion that is not bonded to the outer cylinder 52 on the outer peripheral surface of the elastic member 56, that is, the gap 74. The portion 72 to be made is a free surface. On the free surface 72, a protrusion 78 curved in the radial direction is formed. The elastic member 56 is elastically deformed due to a linear relative movement between the outer cylinder 52 and the inner cylinder 54 in a direction parallel to the longitudinal direction (vertical direction) of the stabilizer link 16. In the present embodiment, the gap 74 is provided in a state that exists in a cross section parallel to the direction of linear relative movement between the inner cylinder 54 and the outer cylinder 52.
The elastic member 56 is made of an organic polymer material such as natural rubber, synthetic rubber, polyurethane, and sideprene (registered trademark). Generally, in an elastic member, it is known that when the ratio (Sf / Sa) of the free surface area Sf, which is the area of the free surface 72, to the area Sa of the constraining surface 73 is small, the spring constant is larger than when it is large. . Further, when the spring constant increases at the connecting portion, the roll rigidity of the suspension of the vehicle increases.

In this embodiment, before the elastic deformation amount of the elastic member 56 reaches a set deformation amount (which can be referred to as a roll stiffness change threshold value or a spring constant change threshold value), the free surface 72 is accompanied by the elastic deformation. The spring constant during this period is small. Elastic deformation is allowed by the deformation of the free surface 72, and the elastic surface is easily deformed.
On the other hand, when the elastic deformation amount reaches the set deformation amount, the protrusion 78 (part or whole) of the free surface 72 comes into contact with the inner peripheral surface of the outer cylinder 52, the free surface area becomes small, and the ratio becomes small. (The area of the constraining surface 73 is substantially constant). In the subsequent elastic deformation, the spring constant becomes larger than before reaching the set deformation amount. Even if the amount of elastic deformation increases, the change in the free surface area Sf is small (almost constant or slightly smaller), so that the spring constant becomes almost constant.
The elastic member 56 is bonded to the inner cylinder 54 in a state where the relative phases of the protrusion 78 on the free surface 72 of the elastic member 56 and the protrusion 66 of the inner cylinder 54 are substantially the same. Therefore, compared with the case where the protrusion 66 is not provided in the inner cylinder 54, the thickness of the elastic member 56 in the portion compressed after the free surface 72 abuts against the inner peripheral surface of the outer cylinder 52 is reduced ( The radial distance Δra between the free surface 72 and the outer peripheral surface of the inner cylinder 54 (the apex of the projection 66) decreases), and the spring constant further increases in the elastic deformation exceeding the set deformation amount. In this case, if the size, shape, etc. of the protrusion 66 is changed, the magnitude of the spring constant (inclination α in FIG. 4) after exceeding the set deformation amount.
) Can be adjusted. For example, when the radial length (projection amount) of the protrusion 66 is large, it is possible to increase the spring constant after exceeding the set deformation amount than when the length is small.
Further, the set deformation amount when the protrusion 78 of the free surface 72 abuts on the inner peripheral surface of the outer cylinder 52 includes the length Δrb of the gap 74, the change in the shape of the free surface 72 accompanying the elastic deformation of the elastic member 56, and the like. Therefore, when the radial length Δrb of the gap 74 is large, the set deformation amount (roll stiffness change threshold value) is larger than when the gap 74 is small. Therefore, when the roll amount of the vehicle reaches a desired size, the size of the gap 74 is determined so that the requirement can be realized when the roll rigidity is increased. On the other hand, when there is a request to increase the spring constant after the elastic deformation amount reaches the set deformation amount, the gap 74 may be increased to reduce the thickness Δra. However, if the gap 74 is increased, the set deformation amount increases and the request cannot be satisfied. Further, if the difference between the outer diameter of the inner cylinder 54 and the inner diameter of the outer cylinder 52 is reduced, the elastic amount of the elastic member 56 is reduced, which is not desirable. On the other hand, if the protrusion 66 is provided, it is possible to secure an elastic amount of the elastic member 56 without increasing the gap 74, and to increase the spring constant after reaching the set deformation amount. Become.

When the vehicle rolls, the stabilizer bar 12 is twisted and a restoring force is generated. In addition, since the stabilizer bar 12 and the stabilizer link 16 are relatively moved relative to each other in the vertical direction substantially linearly in the vertical direction, the outer cylinder 52 and the inner cylinder 54 are arranged in the longitudinal direction of the stabilizer link 16 in the bar-side connecting portion 14. And the elastic member 56 is elastically deformed. As the roll amount of the vehicle increases, the linear relative movement amount between the outer cylinder 52 and the inner cylinder 54 increases, and the elastic deformation amount of the elastic member 56 increases. The vehicle rolls while turning, but may roll due to road surface input.
In the present embodiment, the outer cylinder 52 is fixed to the stabilizer bar 12 so as not to be relatively rotatable, and the inner cylinder 54 is fixed to the stabilizer link 14 so as not to be relatively rotatable. Therefore, when the vehicle rolls, the outer cylinder 52 and the inner cylinder 54 are relatively rotated, and the elastic member 56 is elastically deformed (mainly shear deformation). This also changes the area of the free surface 72 and changes the spring constant. When the vehicle is rolled, both the linear relative movement and the relative rotation of the outer cylinder 52 and the inner cylinder 54 occur, so that both the bending stress and the shearing stress are applied to the elastic member 56. It will be elastically deformed.

In the elastic member 56, when the roll amount of the vehicle is small and the elastic deformation amount is small, the spring constant is small, but when the vehicle roll amount is large and the elastic deformation amount reaches the set deformation amount, the spring constant becomes large. As shown in FIG. 4, in the conventional stabilizer device, even if the roll amount of the vehicle, that is, the total value of the stroke when the suspension stroke is changed in the opposite direction, increases in each of the left wheel and the right wheel. Although the roll stiffness was constant, in the stabilizer device in this example, the roll stiffness can be made variable as the roll amount increases, and the roll amount is a set value corresponding to the set deformation amount. When it is larger, the roll rigidity can be increased than when it is equal to or less than the set value.
Further, when the stabilizer device according to the first embodiment is applied to the front wheel side stabilizer device and not applied to the rear wheel side stabilizer device, the roll stiffness distribution on the front wheel side is increased when the vehicle roll amount is large. Since the steering characteristic can be changed to the understeer characteristic, the running stability during turning can be improved.
Furthermore, when the stabilizer device of the first embodiment is applied to both the front wheel side and the rear wheel side, or when the stabilizer device having a small roll rigidity is mounted on the rear wheel side when the roll amount is small. When the amount of roll is small, the ride comfort can be improved.
As shown in FIG. 5, in the stabilizer device according to the first embodiment, the stabilizer bar 12 is elastically supported by the vehicle body side member 13 b by the support portion 13, and is connected to the wheel side member 20 by the bar side connecting portion. 14 to be elastically supported. Therefore, as shown in FIG. 6, the low frequency and the high frequency are only supported elastically by the vehicle body side member 13 b and not elastically supported by the wheel side member 20 (conventional). It is possible to suppress vibrations and improve riding comfort.
Furthermore, an elastic member such as rubber has a damping effect because it has a larger internal friction than a metal member. Therefore, if the elastic member 56 is provided in the bar side connection part 14, compared with the case where an elastic member is not included, a big damping effect can be acquired and riding comfort can be improved that much.
Further, as shown in FIG. 4, it is possible to change the magnitude of the roll stiffness itself by providing the elastic member 56 with a curl 74 and changing the shape, size, and the like of the curl 74.

Further, in the stabilizer device described in Patent Document 1, the roll rigidity is changed before and after the piston (metal member) contacts the stopper (metal member). On the other hand, in the stabilizer device described in this section, the roll rigidity is changed between the case where the elastic deformation amount of the elastic member is smaller than the set deformation amount and the case where the elastic deformation amount is equal to or larger than the set deformation amount. As a result, it is possible to reduce the impact when the roll rigidity is switched and to reduce the sound (metal contact sound) generated at the time of switching. In addition, the change in roll rigidity can be moderated.
Further, compared to the stabilizer device described in Patent Document 1, a cylinder device is not required, so that the structure can be simplified, the weight can be reduced, and the cost increase can be suppressed.
This situation also applies to the stabilizer device described in Patent Document 2.

The shape of the free surface 72 of the elastic member 56 is not limited to that in the first embodiment. For example, as shown in FIG. 7 (a), the inside of the elastic member 90 (intermediate portion between the outer cylinder 52 and the inner cylinder 54).
A through-hole 92 extending in the axial direction can be formed on the surface, and the surface 94 of the elastic member 90 facing the through-hole 92 can be a free surface. The elastic member 90 is elastically deformed along with the linear relative movement between the outer cylinder 52 and the inner cylinder 54, but the free surface area gradually decreases as the amount of elastic deformation increases. Further, since the elastic members are in contact with each other even after the through hole 92 is crushed, the change in the spring constant is gentle compared to the case where the elastic member and the metal are in contact. As shown in FIG.
As the roll amount of the vehicle increases, the spring constant increases continuously, and the roll rigidity increases continuously.
Further, in the above embodiment, a case where the cavity is provided between the outer peripheral surface of the elastic member 56 and the outer cylinder 52 (gap 74), and a case where the cavity is provided inside the elastic member 90 (through hole 92) will be described. However, it is also possible to form a gap (cavity) between the inner peripheral surface of the elastic member and the inner cylinder 54, and to make the surface facing the gap a free surface.
Furthermore, although the case where the inner cylinder 54 is subjected to bulge processing has been described in the above embodiment, it is not essential to provide the protrusion 66 on the inner cylinder 54. Further, in the case where the cavity (straight) is provided between the inner cylinder 54 and the inner peripheral surface of the elastic member, a protrusion projecting radially inward may be formed on the inner peripheral side of the outer cylinder 52. Similar effects can be obtained.
Further, the elastic member 56 can be directly fitted into the fitting hole 57 of the stabilizer bar 12. In that case, the outer cylinder 52 becomes unnecessary, and accordingly, the number of parts can be reduced and the cost can be reduced.

In the present embodiment, the bar side connecting portion 100 has the structure shown in FIG. In the following embodiments, the same reference numerals are given to the same components as those described previously, and the description thereof is omitted.
The bar-side connecting portion 100 includes an outer cylinder 102, an inner cylinder 104, and an elastic member 106 provided therebetween, and is provided on the stabilizer bar 12 as in the first embodiment. In the present embodiment, the stabilizer bar 12 is fixed to the outer cylinder 102 by welding, so that the outer cylinder 102 is fixed to the stabilizer bar 12 so as not to be relatively movable. As described above, since the outer cylinder 102 is fixed to the stabilizer bar 12 by welding, the processing for the stabilizer bar 12 is facilitated and the manufacturing cost of the stabilizer bar 12 can be reduced as compared with the case of press-fitting.
Further, a gap 108 is provided between the outer peripheral surface of the elastic member 106 and the outer cylinder 102, and a portion facing the gap 108 on the outer peripheral surface of the elastic member 106 is a free surface 110. When the elastic deformation amount of the elastic member 106 reaches the set deformation amount, the free surface 110 comes into contact with the inner peripheral surface of the outer cylinder 102, the spring constant increases, and the roll rigidity increases.
Furthermore, in this embodiment, the elastic member 106 is fixed to the inner cylinder 104 by adhesion, and is fixed to the outer cylinder 52 by press fitting (inner cylinder adhesion outer cylinder press-fitting type bush).

In this embodiment, the bar-side connecting portion 150 has the structure shown in FIG. 9 and is provided on the stabilizer bar 12. The bar-side connecting part 150 includes an outer cylinder 152, a stud bolt 156, an elastic member 158 provided between the stud bolt 156 and the outer cylinder 152. The elastic member 158 is bonded to the stud bolt 156 (the stud bolt 156 is embedded in the elastic member 158) and press-fitted into the outer cylinder 152 (inner cylinder bonded outer cylinder press-in type bush). The outer cylinder 152 is provided integrally with the stabilizer bar 12. The stud bolt 156 is fixed to the bracket 160 to which the stabilizer link 16 is fixed by a nut 162 so as not to be relatively rotatable. The bracket 160 is generally L-shaped.
As described above, in the third embodiment, the stud bolt 156 is used instead of the bolt 62, and the bracket 160 has an L-shape. Therefore, the thickness of the bracket 160, the bolt 62, and the stud bolt 156 are the same. The dimension in the axial direction can be reduced by the thickness difference between the head and the head. Further, by using the stud bolt 156, it is not necessary to hold the bolt 62 at the time of assembling, and the assembling property can be improved.
As in the first embodiment, even if the outer cylinder 52 is fitted into the fitting hole 57 provided in the stabilizer bar 12 by press fitting, the stabilizer bar 12 is welded to the outer cylinder 102 as in the second embodiment. However, as in the third embodiment, the outer cylinder 152 may be integrally formed with the stabilizer bar 12 (sometimes referred to as the color of the stabilizer bar 12). The same applies to each of the embodiments. Hereinafter, these will be referred to as an “outer cylinder” without distinction.

In the present embodiment, the bar-side connecting portion 200 has the structure shown in FIG. 10 and is provided on the stabilizer bar 12. The bar side connecting portion 200 includes an outer cylinder 202, a stud bolt 156, and an elastic member 204. The elastic member 204 is bonded to the stat bolt 156 and press-fitted into the outer cylinder 202.
Further, one or more protrusions 210 projecting radially inward are formed on the inner peripheral side of the outer cylinder 202 at a predetermined center angle (in the fourth embodiment, 180 degrees apart). As a result, the elastic member 204 can be prevented from being twisted when the nut 162 is tightened, so that the elastic member 204 can be prevented from being fixed in a twisted state, and the durability can be improved. Further, there is an advantage that the relative positioning accuracy between the stud bolt 156 (stabilizer bar 12) and the outer cylinder 202 (stabilizer link 16) can be improved.
In the present embodiment, a pair of protrusions 210 are provided opposite to each other at a position 90 degrees away from the direction of relative movement between the stud bolt 156 and the outer cylinder 202. However, the number and position of the protrusions 210 are not limited to those in the fourth embodiment. What is necessary is just to provide in the state which does not affect formation of the free surface 110 of the elastic member 110. FIG.

The bar side connection part 250 shall have the structure shown in FIG. In FIG. 11, the bar-side connecting portion 250 includes a plate-like member 252 that cannot move relative to the stabilizer bar 12, a shaft-like member 254 that cannot move relative to the stabilizer link 16, and elastic members 256 and 258 provided therebetween. Including. The plate-like member 252 and the shaft-like member 254 are provided integrally with the stabilizer bar 12 and the stabilizer link 16, respectively.
The plate member 252 is provided with a through hole 259 through which the shaft member 254 passes.
Each of the elastic members 256 and 258 has a generally cylindrical shape, and annular grooves 260 and 262 are formed in the middle portion of the outer peripheral surface.

The plate-like member 252 and the elastic members 256 and 258 pass through the shaft-like member 254, and the plate-like member 252 is clamped by a pair of nuts 264 and 266 in a state where the plate-like member 252 is sandwiched between the elastic members 256 and 258 from both sides.
A collar 268 is disposed between the shaft-shaped member 254 and the inner peripheral surface of the elastic members 256 and 258 and the through hole 259 of the plate-shaped member 252, and end surfaces of the nuts 264 and 266 and the elastic members 256 and 258. Retainers 274 and 276 are provided between 270 and 272. The elastic members 256 and 258 are attached while being sandwiched between the plate-like member 252 and the retainers 274 and 276, respectively.
In the present embodiment, the stabilizer bar 12 and the stabilizer link 16 are attached so as to be linearly movable relative to each other in the axial direction of the stabilizer link 16. Any one of 274 and 276 and one of the nuts 264 and 266 press either one of the elastic members 256 and 258 against the plate-like member 252.
In the present embodiment, the first member is constituted by the plate-like member 252 and the second member is constituted by the shaft-like member 254. The second member includes a pair of nuts 264 and 266 and a retainer 274. 276 etc. can be considered to be included. The contact surfaces 270 and 272 of the elastic members 256 and 258 with the retainers 274 and 276 are used as restraint surfaces, and the outer peripheral surfaces including the groove portions 260 and 262 of the elastic members 256 and 258 are used as free surfaces 280 and 282. The
Further, annular grooves 284 and 286 are formed on the periphery of the through-hole 259 of the shaft-like member 254 of the plate-like member 252, and the elastic members 256 and 258 enter therein, whereby the elastic members 256 and 258. Deviation in the width direction (direction intersecting the axial direction of the stabilizer link 16) is prevented.

When the vehicle rolls, a vertical force is applied to the stabilizer link 16, and the stabilizer link 16 and the stabilizer bar 12 are linearly moved relative to each other in the vertical direction. For example, when a downward force (a force from the top to the bottom of the paper) is applied to the stabilizer link 16 (shaft member 254), the elastic member 258 is applied to the stabilizer bar 12 (suspension arm 20) by the nut 266 and the retainer 276. It is pressed and compressed. When the elastic deformation amount (compression amount) of the elastic member 258 reaches the set deformation amount, the groove portion 262 is crushed, the opposing surfaces 290 and 292 are in contact with each other, and the free surface area is reduced. As a result, the spring constant increases and the roll rigidity increases. The same applies when an upward force (force from the bottom to the top of the paper) is applied to the shaft-like member 254. In this case, the elastic member 256 is compressed.
Thus, in this embodiment, it is only necessary to form the through hole 259 through which the shaft-like member 254 penetrates at the end portion (plate-like member 252) of the stabilizer bar 12, and the outer cylinder 52 is press-fitted as in the first embodiment. The fitting hole 57 is not formed. The processing accuracy of the hole may be low, and accordingly, the processing of the stabilizer bar 12 can be simplified, and the manufacturing cost can be reduced.
Further, since there is no need to bond the collar 268 and the elastic members 256 and 258 (bonding rubber or the like to a metal member), the assembly can be facilitated and the cost can be reduced accordingly. .

In addition, the shape of the free surfaces 280 and 282 of the elastic members 256 and 258 does not matter. For example, in the fifth embodiment, each of the elastic members 256 and 258 is provided with one annular groove portion, but a plurality of each may be provided.
Further, in each of the first to fourth embodiments, the case where the bar side connecting portion is provided in the stabilizer bar 12 has been described. However, the bar side connecting portion may be provided in the stabilizer link 16. Hereinafter, although the case where a bar side connection part is provided in the stabilizer link 16 is demonstrated, the technical feature as described in each said Examples 1-5 is applicable in each Example.

In the present embodiment, the bar side connecting portion 18 has the structure shown in FIG. The bar-side connecting portion 300 includes an outer cylinder 302, an inner cylinder 304, and an elastic member 306, but the outer cylinder 302 is fixed to the fitting hole 308 provided in the stabilizer link 16 so as not to move relative to the inner cylinder 304. Is fixed to the stabilizer bar 12 by a pair of bolts 310 and nuts 312 so that they cannot move relative to each other. A gap 314 is formed on the outer peripheral side of the elastic member 306, and a surface facing the gap 314 is a free surface 316. Further, a contact surface 320 between the stabilizer bar 12 and the inner cylinder 304 (an end surface of the inner cylinder 304) and a contact surface 322 with the bolt 310 are used as friction surfaces. Reference numeral 324 indicates a washer.
The elastic member 306 is fixed to the outer cylinder 302 and the inner cylinder 304 by bonding (inner cylinder / outer cylinder bonding type bush).
As described above, when the bar-side connecting portion 18 is provided on the stabilizer link 16, the shape change of the stabilizer bar 12 can be reduced as compared with the case where the bar-side connecting portion 18 is provided on the stabilizer bar 12. There is an advantage that is high.
The elastic member 306 can also be fitted into the fitting hole 308 of the stabilizer link 16 by press fitting. If fitted into the fitting hole 308 by press-fitting, the outer cylinder 352 is not necessary, and the cost can be reduced accordingly.

  The bar side connecting portion 350 may have the structure shown in FIG. In the bar side connecting portion 350, the stabilizer link 16 is fixed to the outer cylinder 352. Further, the inner cylinder 354 is subjected to bulge processing and a projection 356 is provided. An elastic member 358 is provided between the inner cylinder 354 and the outer cylinder 352, but a gap 360 is provided between the outer peripheral surface of the elastic member 358 and the outer cylinder 352, and a portion facing the gap 360 is a free surface 362. Is done. Further, a stud bolt 364 is used in place of the bolt 310, the stabilizer bar 12 is fixed to the stud bolt 364 (the stud bolt 364 is embedded in the stabilizer bar 12), and the stabilizer is attached to the inner cylinder 354 by the stud bolt 364 and the nut 312. The bar 12 is fixed so as not to be relatively movable. A contact surface (end surface 366) between the stabilizer bar 12 and the inner cylinder 354 is a friction surface. In the seventh embodiment, since the stud bolt 364 is used, the dimension in the axial direction can be reduced by the thickness difference of the head as compared with the case where the bolt 310 is used.

The bar side connecting portion 400 may have the structure shown in FIG. In this embodiment, a stud bolt 402 is used instead of the inner cylinder, and the stabilizer bar 12 is fixed to the stud bolt 402. An elastic member 358 is bonded to the stud bolt 402, and the outer cylinder 352 is fixed to the elastic member 358 by press fitting.
The stabilizer bar 12 is fastened in a state of being sandwiched between the washer 404 and the nut 406, and is bonded to the washers 404 on both sides of the stabilizer bar 12.
The adhesion surface 412 with the nut 406 is a friction surface.
As described above, when the number of friction surfaces is two, the fastening ability can be improved by that amount compared to the case where the number of friction surfaces is one as in the seventh embodiment. Conversely, when the fastening capability is equivalent to that of the seventh embodiment, it is possible to reduce the diameter of the stud bolt and the like, thereby saving space and reducing costs.

  The bar side connecting portion 420 may have the structure shown in FIG. Similar to the third embodiment, the bar-side connecting portion 420 includes an inner cylinder 421, an outer cylinder 422, and an elastic member 424 provided therebetween, and one or more protruding inward in the radial direction from the outer cylinder 422. A protrusion 425 is formed. The protrusion 425 can prevent the elastic member 424 from being twisted due to the fastening operation by the nut 426, and can improve the durability of the elastic member 424. In addition, it is possible to improve the relative positioning accuracy between the stabilizer link 16 and the stabilizer bar 12. In this embodiment, the elastic member 424 is fixed to the inner cylinder 421 by bonding, and the outer cylinder 422 is press-fitted into the elastic member 424 (inner cylinder bonding outer cylinder press-fitting type bush).

  As mentioned above, although Example 1-9 demonstrated the bar side connection part, two or more technical features of these can be applied in combination with each other. Moreover, each structure of a bar side connection part is applicable to the wheel side connection part demonstrated below. The stabilizer link 16 may be attached to the suspension arm or attached to the shock absorber by the wheel side connecting portion.

In the present embodiment, the wheel side connecting portion 18 may have the structure shown in FIG. The wheel side connecting portion 18 is provided in the suspension arm 20 and is provided in a fitting hole 452 formed in the suspension arm 20.
The wheel side connecting portion 18 includes an inner cylinder 454 and an elastic member 455, and the elastic member 455 is directly fitted into the fitting hole 452 by press-fitting. The inner cylinder 454 is fixed to the stabilizer link bracket 458 using a pair of bolts 456 and nuts 458. The stabilizer link 16 is fixed to the stabilizer link bracket 458.
When force is applied in the vertical direction of the stabilizer link 16 by rolling of the vehicle, the inner cylinder 454 and the suspension arm 20 are relatively moved, whereby the elastic member 455 is elastically deformed. When the free surface 460 of the elastic member 455 comes into contact with the inner peripheral surface of the fitting hole 452 of the suspension arm 20, the spring constant is increased and the roll rigidity is increased before contact.

  In the wheel side connecting portion 470 shown in FIG. 17, the stabilizer link 16 is fixed to the outer cylinder 472 by welding, and the suspension arm 20 is fixed to the inner cylinder 474 via the bracket 476. An elastic member 480 is provided between the outer cylinder 472 and the inner cylinder 474.

The wheel side connecting portion 500 may have the structure shown in FIG. The wheel side connecting portion 500 includes a plate-like member 502 provided integrally with the suspension arm 20, a shaft-like member 504 provided integrally with the stabilizer link 16, and an elastic member provided on both sides of the plate-like member 502. 506 and 508 are included. The plate-like member 502 passes through the shaft-like member 504 through the through-hole 510, and the plate-like member 502 is clamped by a pair of nuts 514 and 516 in a state of being sandwiched between the elastic members 506 and 508 on both sides thereof. Thereby, the shaft-like member 504 and the plate-like member 502 can be moved relative to each other.
The elastic members 506 and 508 each have a generally cylindrical shape, and retainers 520 and 522 are provided between the end surfaces of the elastic members 506 and 508 and the nuts 514 and 516, respectively. , 508, brackets 524, 526 are provided, respectively. A collar 528 is provided on the inner peripheral side of the plate-like member 502 and the elastic members 506 and 508. In the present embodiment, it can be considered that the first member is constituted by the plate-like member 502 and the second member is constituted by the shaft-like member 504, but the first member includes brackets 524 and 526. The second member can be considered to include nuts 514, 516, and retainers 520, 522. The first member and the second member are attached so as to be relatively movable in the axial direction of the second member.

The outer diameters of the elastic members 506 and 508 on the retainer 520 and 522 side (opposite side to the suspension arm 20) are smaller than the inner diameters of the brackets 524 and 526, and the outer peripheral surface of the elastic members 506 and 508 and the bracket Between the inner peripheral surfaces of 524 and 526, annular gaps 528 and 529 are provided. When the relative position between the stabilizer link 16 and the suspension arm 20 is in a steady position, as shown in FIG. 18, the portions on the suspension arm side of the outer peripheral surfaces of the elastic members 506 and 508 are within the brackets 524 and 526. It is in contact with the peripheral surface and is separated from the inner peripheral surfaces of the brackets 524 and 526 at a portion opposite to the suspension arm 20.
Further, one or more axially extending grooves 530 and 532 are formed on the outer peripheral surfaces of the elastic members 506 and 508, respectively. In this embodiment, the outer peripheral surfaces of the elastic members 506 and 508 are the free surfaces 540 and 542, and the portions of the end surfaces of the elastic members 506 and 508 that are in contact with the retainers 520 and 522 are the constraining surfaces.

When an axial force is applied to the stabilizer link 16, the stabilizer link 16 and the suspension arm 20 are relatively moved in the axial direction, and one of the elastic members 506 and 508 is compressed.
For example, when a downward force is applied to the shaft-like member 504 (force from the top to the bottom of the paper), the nut 514 and the retainer 520 press the elastic member 506 toward the bracket 524, and the elastic member 506 is compressed. As the elastic member 506 is compressed, the contact area with the bracket 524 increases, and the area of the free surface 540 decreases. As a result, the spring constant increases and the roll rigidity increases. The same applies when an upward force is applied to the stabilizer link 16. In this case, the elastic member 508 is pressed against the bracket 526 by the nut 516 and the retainer 522 and compressed.
In addition, the groove parts 530 and 532 are provided in order to suppress the occurrence of abnormal noise. When the amount of compression of the elastic members 506 and 508 is large, air is sealed between the elastic members 506 and 508 and the brackets 524 and 526 to generate abnormal noise or to generate abnormal noise due to stick-slip. However, the generation of these abnormal noises is suppressed by the grooves 530, 532 and the like.
In the present embodiment, since the adhesion between the elastic member and the metal portion is not necessary, the production is facilitated accordingly.

  In the wheel side connecting portion 550 shown in FIG. 19, one or more protrusions 556 and 558 are provided on the inner peripheral side of the brackets 552 and 556, respectively. Since the elastic members 560 and 562 are prevented from rotating by the protrusions 556 and 558, the elastic members 560 and 562 are prevented from being twisted during the fastening operation of the nuts 514 and 516, and are assembled in a state where torsional distortion occurs. It is possible to avoid this, and the durability of the elastic members 560 and 562 can be improved. Further, the relative positioning accuracy between the stabilizer link 16 and the suspension arm 20 can be improved.

  As mentioned above, in Examples 10-13, although the case where the stabilizer link 16 was connected with the suspension arm 20 by the wheel side connection part was demonstrated, it applies combining two or more technical characteristics of these, respectively. can do. Next, the case where it connects with the shock absorber 40 by a wheel side connection part is demonstrated. The wheel side connecting portions of Examples 10 to 13 can be similarly applied when connected to the shock absorber 40.

In the present embodiment, the wheel side connecting portion 600 has the structure shown in FIG. The wheel side connecting portion 600 includes an inner cylinder 602, an outer cylinder 604, an elastic member 606 between the inner cylinder 602 and the outer cylinder 604, a ball joint 610 is fitted to the inner cylinder 602, and a stabilizer link to the outer cylinder 604. The bracket 612 is fixed. A shock absorber bracket 614 is connected to the ball joint 610, and is held around the point P with respect to the main body 618, that is, relative to the center of the ball.
Although illustration is omitted, in the strut suspension, when the shock absorber is supported by the knuckle arm, the shock absorber is also rotated by steering or the like. As a result, the swing angle of the stabilizer link 16 with respect to the shock absorber may increase. On the other hand, in this embodiment, since the ball joint 610 is provided between the stabilizer link 16 and the shock absorber 40, swinging between these is allowed. Further, when a vertical force is applied to the stabilizer link 16 by the roll of the vehicle, the outer cylinder 604 is moved relative to the main body 618 of the ball joint 610, whereby the elastic member 606 is elastically deformed. When the elastic deformation amount of the elastic member 606 is large, the spring constant becomes larger and the roll rigidity becomes larger than when the elastic member 606 is small.

  Although a plurality of embodiments of the present invention have been described, it is not always necessary that both the bar side connecting portion 14 and the wheel side connecting portion 18 are each one of the plurality of embodiments. The present invention may be implemented in various modifications and improvements based on the knowledge of those skilled in the art, in addition to the aspects described above, such that at least one of these may be one of the above embodiments. can do.

12: Stabilizer bar 13b: Car body side member 16: Stabilizer link 14, 100, 150, 200, 250, 300, 350, 400, 420: Bar side connecting portion 18, 450, 470, 500, 550, 600: Wheel side connection Part 20: Suspension arm 52, 102, 152, 202, 302, 352, 422, 472, 600: Outer cylinder 54, 104, 304, 354, 454, 474, 602: Inner cylinder 56, 90, 106, 158, 204 , 256, 258, 306, 358, 424, 455, 480, 506, 508, 560, 562, 606: elastic member 62, 310, 456: bolt 64, 162, 264, 266, 312, 412, 426, 458, 514, 516: Nut 66: Projection 72, 94, 110, 282, 284 316, 362, 460, 540, 542: Free surface 74, 92, 108, 314, 360, 528, 529: Straight 78: Projection 156, 364, 402: Stud bolt 254, 504: Shaft member 252, 502: Plate member 260, 262: groove

Claims (3)

A stabilizer bar extending between the left wheel and the right wheel of the vehicle and connected to the vehicle body side member via the vehicle body side connection portion;
Both ends of the stabilizer bar are connected to each other at one end via a bar-side connecting portion, and the other end corresponds to the wheel side member of the left wheel and the wheel side member of the right wheel. A stabilizer device including a stabilizer link connected to a member by a wheel side connecting portion,
At least one of the bar side connection part and the wheel side connection part includes an elastic member that elastically deforms with a change in the roll angle of the vehicle and changes roll rigidity.
The bar-side connecting portion is attached to one of the stabilizer link and the stabilizer bar so as not to be relatively movable, and is attached to the other of the stabilizer link and the stabilizer bar so as not to be relatively movable. In a state that allows relative movement with the second member, each of the stabilizer links and the stabilizer bar are coupled,
In each of the left wheel and the right wheel, the wheel side connecting portion includes a first member attached to one of the stabilizer link and the wheel side member so as not to be relatively movable, the stabilizer link, and the The stabilizer link and the wheel side member are respectively connected in a state that allows relative movement with the second member attached to the other side of the wheel side member so as not to be relatively movable,
In the at least one of the bar side connecting portion and the wheel side connecting portion,
The first member includes: (a) a plate-like member ; and (b) a pair of brackets that are disposed on both sides of the plate-like member and are moved in accordance with the movement of the plate-like member. And the second member includes (i) a shaft-like member penetrating the plate-like member, and (ii) a pair of retainers movable along with the movement of the shaft-like member, and the elastic member Is generally cylindrical, and on both sides of the plate-like member , between each of the pair of brackets and each of the pair of retainers in a state of being penetrated by the shaft-like member , respectively. The outer peripheral surface of the portion on the plate-like member side is in contact with the inner peripheral surface of the bracket, and the outer peripheral surface of the retainer side portion is held in a state of being separated from the inner peripheral surface of the bracket, and The protrusions are provided on the inner peripheral surfaces of the pair of brackets, respectively. Stabilizer device characterized .   A stabilizer bar extending between the left wheel and the right wheel of the vehicle and connected to the vehicle body side member via the vehicle body side connection portion;
  Both ends of the stabilizer bar are connected to each other at one end via a bar-side connecting portion, and the other end corresponds to the wheel side member of the left wheel and the wheel side member of the right wheel. A stabilizer link connected to the member by a wheel side connecting portion;
A stabilizer device comprising:
  At least one of the bar side connection part and the wheel side connection part includes an elastic member that elastically deforms with a change in the roll angle of the vehicle and changes roll rigidity.
  The bar-side coupling portion is attached to one of the stabilizer link and the stabilizer bar so as not to be relatively movable, and is attached to the other of the stabilizer link and the stabilizer bar so as not to be relatively movable. In a state that allows relative movement with the second member, each of the stabilizer links and the stabilizer bar are coupled,
  In each of the left wheel and the right wheel, the wheel side connecting portion includes a first member attached to one of the stabilizer link and the wheel side member so as not to be relatively movable, the stabilizer link, and the The stabilizer link and the wheel side member are respectively connected in a state that allows relative movement with the second member attached to the other side of the wheel side member so as not to be relatively movable,
  In the at least one of the bar side connecting portion and the wheel side connecting portion,
  The first member includes: (a) a plate-like member; and (b) a pair of brackets that are disposed on both sides of the plate-like member and are moved in accordance with the movement of the plate-like member. And the second member includes (i) a shaft-like member that penetrates the plate-like member, and (ii) a pair of retainers that can move along with the movement of the shaft-like member, and The elastic member has a generally cylindrical shape, and is formed on both sides of the plate-like member with each of the pair of brackets and each of the pair of retainers in a state of being penetrated by the shaft-like member. In between, the outer peripheral surface of the plate-like member side portion is in contact with the inner peripheral surface of the bracket, the outer peripheral surface of the retainer side portion is held in a state of being separated from the inner peripheral surface of the bracket, One or more grooves extending in the axial direction are formed on the outer peripheral surface of Stabilizer device. The stabilizer device according to claim 1 or 2 , wherein the elastic member is a member formed of rubber or the like.

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