JP2006264629A - Stabilizer layout structure and connecting rod - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connecting rod capable of suppressing interference of an end of a stabilizer and another part. <P>SOLUTION: The connecting rod 8 is used for the vehicle in which a lower end of a shock absorber 5 is connected to a rotation support member for rotatably supporting a steered wheel or a suspension link 3 and the end of the stabilizer 6 is connected to the shock absorber 5 through the connecting rod 8 having a shaft directed in an approximately vertical direction. The connecting rod 8 is provided with a projection part 8 and a guide passage 14 as an expansion/contraction means for shortening the length of the connecting rod 8 in the steering state more than the non-steering state of the steered wheel. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a stabilizer routing structure for connecting an end portion of a stabilizer to a shock absorber in a vehicle, and a connecting rod.

The end of the stabilizer is connected to a suspension link, a shock absorber, or the like directly or via a connecting rod. And in the attachment structure of the stabilizer end part of patent document 1, the end part of a stabilizer is connected with the wheel attachment position vicinity of a suspension arm, and the interference with the edge part of a stabilizer and a wheel is prevented.
JP-A-4-368286

However, although the stabilizer end portion mounting structure can avoid the interference between the stabilizer and the wheel, for example, in the case where the stabilizer is arranged close to the steering tie rod, the steered wheels are steered. In this case, since the steering tie rod located in the vicinity of the suspension arm swings back and forth, the stabilizer may interfere with the steering tie rod as the turning angle is increased in order to reduce the minimum turning radius.
The present invention has been made paying attention to the above points, and an object of the present invention is to provide a connecting rod capable of avoiding interference between a stabilizer end portion and other components arranged in the vicinity thereof.

In order to solve the above-described problems, the present invention is configured such that the lower end portion of the shock absorber is connected to a rotation support member that rotatably supports a steered wheel and rotates in the same direction as the steered wheel according to turning. The connecting rod in a vehicle in which the end of the stabilizer is connected to the shock absorber via a connecting rod whose axis is directed up and down,
The connecting rod is provided with an expansion / contraction means capable of adjusting the length of the connecting rod.

  According to the present invention, for example, when other parts such as a steering tie rod relatively approach the stabilizer by turning, for example, if the connecting rod is set to be shortened by an expansion / contraction means, the end of the stabilizer becomes As a result of moving upward and escaping, it is possible to avoid interference between the other parts and the end of the stabilizer. This makes it possible to increase the turning angle.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a view showing an example of a suspension structure to which a connecting rod of the present embodiment is applied. A suspension member 1 is elastically supported by a vehicle body via a mount insulator 2. Thus, the vehicle body side mounting portion of the suspension link 3 is coupled via a bush so as to be swingable in the vertical direction. The wheel side mounting portion of the suspension link 3 is connected to a knuckle 4 that is a wheel support member via a ball joint. A lower end portion of the shock absorber 5 is connected to the knuckle 4 with its shaft up and down, and an upper end portion of the shock absorber 5 is attached to the vehicle body.

  A central portion of the stabilizer 6 is disposed on the front side of the suspension member 1 so as to extend in the vehicle width direction. A central portion 6 a of the stabilizer 6 is attached to the front portion of the suspension member 1 through a bracket 7 so as to be rotatable about the shaft. The arm portion 6b that is continuous to the left and right of the central portion 6a of the stabilizer 6 extends toward the knuckle 4 side, and the tip portion thereof is connected to the lower end portion of the connecting rod 8 with the shaft directed up and down. The upper end portion of the rod 8 is connected to the cylinder portion of the shock absorber 5. Here, the upper and lower ends of the connecting rod 8, the end of the stabilizer 6 and the shock absorber 5 are connected to each other through, for example, a bushing whose axis is directed to the axial direction of the connecting rod 8, The connecting rod 8 is connected in a state where the shaft rotation is restricted.

  As shown in FIGS. 2 and 3, a steering tie rod 10 constituting a steering operation member extends in the vehicle width direction, and its tip is connected to a knuckle arm. 2 and 3, reference numeral 11 denotes a drive shaft, which extends in the vehicle width direction and is rotatably supported by the center portion 14a (wheel center position) of the knuckle 4 and the wheel. It is linked to.

  As shown in FIG. 4, the connecting rod 8 is divided into upper and lower parts with a central portion in the longitudinal direction as a boundary, and includes an upper connecting rod 8A on the upper side and a lower connecting rod 8B on the lower side. The lower connecting rod 8B has an outer cylinder portion 12 on the upper portion of the lower connecting rod 8B, into which the lower portion 8Aa of the upper connecting rod 8A can be inserted coaxially. The upper connecting rod 8A and the lower connecting rod 8B are each formed of a cylindrical body.

On the outer peripheral surface of the lower portion 8Aa of the upper connecting rod 8A, a protruding portion 13 that protrudes in the outer diameter direction is provided. Further, the outer cylinder portion 12 is formed with a guide path 14 formed of a substantially inverted U-shaped notch having a width into which the protrusion 13 can be inserted. The guide path 14 includes a central portion 14a extending in the lateral direction and left and right descending portions 14b extending obliquely downward continuously on both sides of the central portion 14a.
Then, as shown in FIG. 5, the protruding portion 13 formed on the lower portion 8 </ b> Aa of the upper connecting rod 8 </ b> A is inserted into the guide path 14 of the outer cylinder portion 12 and guided along the guide path 14. It has become.

  The relationship between the guide path 14 and the protrusion 13 will be described. When the steered wheel in which the vehicle is traveling straight is not steered, the protrusion 13 is a central portion 14a of the guide path 14 as shown in FIG. It is set to be located in the center of As the steering wheel is steered, the lower part of the shock absorber 5 swings left and right, so that the upper connecting rod 8A causes a rotational displacement with respect to the lower connecting rod 8B, and as the rotational displacement occurs, The protrusion 13 moves along one of the left and right descending portions 14b and moves downward along the descending portion 14b, so that the lower portion of the upper connecting rod 8A relatively enters the outer cylindrical portion 12. As a result, the length of the connecting rod 8 is shortened.

Here, in this embodiment, as shown in FIG. 7, the guide means which consists of the protrusion part 13 and a guide path (not shown) is provided in three places of the circumferential direction. The three projections 13 are arranged at equal intervals along the circumferential direction at the same height.
The protrusion 13 is a circular disk-shaped member when viewed from the front. Further, as shown in FIG. 8, the side surface of the protruding portion 13 is chamfered in the shape of an edge so that the contour in the protruding direction has an arc shape.
FIG. 6 shows an overall schematic diagram. In the schematic diagram shown in FIG. 6, the upper link 20 is also illustrated, but the upper link 20 may not be provided.

Next, the operation, action, and effect of the structure provided with the connecting rod 8 will be described.
When the steering wheel is steered, for example, as shown in FIG. 6, the steering tie rod 10 moves outward in the vehicle width direction and the knuckle 4 rotates (in FIG. 6, the knuckle 4 and the shock Although the movement of the absorber 5 is not shown in the drawing, the knuckle 4 actually rotates, and the shock absorber 5 also moves rearward accordingly. Is displaced toward the arm portion 6b of the stabilizer 6, and the clearance between the stabilizer 6 and the steering tie rod 10 is reduced in a top view.

At this time, in the present embodiment, due to the rotational displacement of the knuckle 4, rotational displacement in the direction shown in FIG. 6 occurs in the upper connecting rod 8. As a result, the length of the connecting rod 8 is shortened by the protrusion 13 being guided toward the descending portion 14b and moving downward. At this time, since the position of the upper end portion of the connecting rod 8 is connected to the shock absorber 5, the lower end portion of the connecting rod 8 is displaced upward as a result, whereby the end portion of the stabilizer 6 is moved upward. Thus, interference between the end portion of the stabilizer 6 and the steering tie rod 10 is avoided. Such interference avoidance action also occurs between the end of the stabilizer 6 and the drive shaft 11.
And since this makes it possible to give a larger turning angle, it is possible to apply for a large turning angle.

  Moreover, in the said embodiment, since three projection parts 13 share by providing three sets of guide means, and it supports by sharing the horizontal force, compared with the case where it supports by one projection part 13. Further, the increase in sliding resistance due to the twisting at the nested fitting portion between the lower portion 8Aa of the upper connecting rod 8A and the outer cylinder portion 12 can be reduced. In addition, since the distance between the three sets of guide means is set to be equal along the circumferential direction, the lower part of the upper connecting rod 8A is easy to rotate around the axis with respect to the outer cylinder part 12. Thus, also in this respect, an increase in sliding resistance due to the above-described twisting can be prevented.

  Further, by forming the protrusion 13 in a disc shape, the outline of the portion of the protrusion 13 that contacts the side wall of the guide path 14 in a front view becomes a convex arc shape on the side wall side of the guide path 14. The part 13 and the side surface of the guide path 14 can be in line contact or point contact. As a result, even when a relative displacement occurs between the protrusion 13 and the guide path 14 and the curvature of the guide path 14 at the contact position changes, the sliding resistance between the both 13 and 14 can be reduced. Accordingly, the smooth movement of the protrusion 13 along the guide path 14 can be ensured accordingly. Here, the projection 13 does not need to be circular as a whole when viewed from the front (viewed from the protruding direction), and it is sufficient that at least a portion in contact with the guide path 14 has an arc shape, such as an elliptical shape.

  Furthermore, in the present embodiment, as shown in FIG. 8, the side surface of the disk constituting the protrusion 13 also has an arcuate outline in the thickness direction (projection direction of the protrusion 13). The contact between the guide 13 and the guide path 14 becomes a point contact or a state close to a point contact, so that the sliding resistance can be further reduced, and the portion can be moved more smoothly. Here, the configuration in which the arc-shaped contour is also formed in the protrusion direction is not limited to the above-described configuration, and the above-described effect may be obtained by, for example, forming the protrusion 13 from a sphere. Moreover, it is good also considering the outline of the side surface of the guide path 14 as a circular arc shape convex to the projection part 13 side along the plate | board thickness direction (projection direction of the projection part 13).

  Here, in the said embodiment, although the guide path 13 is formed by the notch, you may form it by the groove | channel extended in an inverted U shape as mentioned above. Further, the protruding portion 13 may be provided on the outer cylinder portion 12 side, and the guide path 14 may be formed at the lower portion of the upper connecting rod 8A. Furthermore, it is good also as a structure which provides an outer cylinder part in the lower part of the upper connecting rod 8A, and inserts the upper part of the lower connecting rod 8B in the outer cylinder part. Further, the outer cylinder portion 12 may be omitted by changing the diameters of the upper connecting rod 8A and the lower connecting rod 8B.

  Further, in the above embodiment, the length of the connecting rod 8 at the time of turning is reduced by a simple structure without using a power source such as an actuator, that is, by a mechanism for expanding and contracting using the swinging of the wheel. Although it is changing, it is not limited to this. For example, by connecting the upper connecting rod 8A and the lower connecting rod 8B via a hydraulic cylinder device and controlling the hydraulic cylinder device to expand and contract in accordance with turning, the connecting rod The length of 8 may be adjusted. When the actuator is used, it is not always necessary to use the rotational displacement due to the turning. Therefore, the lower end portion of the shock absorber 5 does not need to be attached to the knuckle 4 and is attached to the suspension link 3. Also good.

  Moreover, in the said embodiment, although the edge part of the stabilizer 6 is displaced in the direction away from the steering tie rod 10 by changing the length of the connecting rod 8 with an expansion-contraction means, it is not limited to this. For example, as shown in FIG. 10, the end of the stabilizer 6 is displaced away from the steering tie rod 10 by moving the connecting portion of the connecting rod 8 and the shock absorber 5 up and down by the actuator 21 and the like during the turning. May be.

1 is a perspective view showing a suspension structure according to an embodiment of the present invention. It is a front view explaining arrangement | positioning of the connecting rod which concerns on embodiment based on this invention. It is a top view explaining arrangement | positioning of the connecting rod which concerns on embodiment based on this invention. It is a figure explaining the expansion-contraction means which concerns on embodiment based on this invention. It is a figure which shows the relationship between the projection part and guideway which concern on embodiment based on this invention. It is a schematic diagram for demonstrating the effect | action of this embodiment. It is a top view which shows the example which provided the three projection parts which concern on embodiment based on this invention. It is sectional drawing which shows the shape of the projection part which concerns on embodiment based on this invention. It is a perspective view which shows the example of an assembly | attachment of the projection part which concerns on embodiment based on this invention. It is a conceptual diagram which shows the example of the edge part displacement means which concerns on embodiment based on this invention.

Explanation of symbols

1 Suspension member 2 Mount insulator 3 Suspension link (lower arm)
4 Knuckles (rotating support members)
5 Shock absorber 6 Stabilizer 6a Center part 6b Arm part 8 Connecting rod 10 Steering tie rod 11 Drive shaft 12 Outer cylinder part 13 Projection part 14 Guide path 14a Center part 14b Lowering part

Claims (11)

A rotation support member that supports the steered wheel and rotates in response to the steering, and a rotation support member that is coupled to the rotation support member so as to steer the steered wheel and swings at least in the vehicle front-rear direction during the steering. Stabilizer wiring comprising: a rudder operating member; and a connecting rod arranged in the vicinity of the steered operation member and connecting a shock absorber and an end of a stabilizer disposed below the shock absorber. In structure
A stabilizer routing structure comprising: an end displacing means for displacing an end of the stabilizer in a direction away from the steering operation member when the steering wheel is steered.   2. The stabilizer routing structure according to claim 1, wherein the end displacing means displaces the end of the stabilizer by an expansion / contraction means capable of adjusting the length of the connecting rod.   3. The stabilizer routing structure according to claim 2, wherein the expansion / contraction means shortens the length of the connecting rod when the steered wheel is in a steered state than when the steered wheel is in a non-steered state. . The lower end of the shock absorber is connected to a rotation support member that rotatably supports the steered wheel and rotates in the same direction as the steered wheel according to steering, and the end of the stabilizer is connected to the shock absorber. The connecting rod in a vehicle connected via a connecting rod whose axis is directed up and down,
A connecting rod comprising an expansion / contraction means capable of adjusting the length of the connecting rod.   The connecting rod according to claim 4, wherein the expansion / contraction means shortens the length of the connecting rod when the steered wheel is in a steered state than when the steered wheel is in a non-steered state.   In the expansion and contraction means, the connecting rod includes an upper connecting rod and a lower connecting rod, and the lower portion of the upper connecting rod and the upper portion of the lower connecting rod are circumferentially and axially relative to each other. Nested in a displaceable state, and further between the lower part of the upper connecting rod and the upper part of the lower connecting rod, the upper side with respect to the circumferential position when the steered wheel is not steered As the lower portion of the connecting rod and the upper portion of the lower connecting rod are relatively rotationally displaced in the circumferential direction, the axial overlap of the lower portion of the upper connecting rod and the upper portion of the lower connecting rod increases. 6. The connector according to claim 5, further comprising guide means for relative displacement in the axial direction. Ingu rod.   The guide means is provided with a protrusion protruding toward the other of the peripheral surface of the lower part of the upper connecting rod and the upper part of the lower connecting rod, and further, the protrusion according to the relative rotational displacement. The connecting rod according to claim 6, wherein a guide path comprising a groove or a notch for guiding the guide is formed on the other side.   8. The connecting rod according to claim 7, wherein the protrusion has a circular arc shape in which a contour of a portion in contact with the side wall of the guide path is convex toward the side wall side of the guide path when viewed from the protruding direction. .   9. The projection according to claim 7, wherein an outline of a portion of the protrusion that contacts the side wall of the guide path has an arc shape that protrudes toward the side wall along a protruding direction of the protrusion. The connecting rod described.   One end portion of the guide path extends to an open end surface position at a lower part of the upper connecting rod or an upper part of the lower connecting rod in which the guide path is formed. 10. The connecting rod according to any one of items 9.   11. The connecting / connecting device according to claim 6, wherein a plurality of the guide means are provided along a circumferential direction, and the guide means are arranged at equal intervals. rod.

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