JP4747936B2 - Stabilizer support structure - Google Patents

Description

  The present invention relates to a structure for elastically supporting a stabilizer on a vehicle body side member.

The stabilizer includes a stabilizer body extending in the vehicle width direction, and left and right arm portions that are connected to a suspension member (such as a shock absorber or a knuckle (wheel support member)) that are continuous on both sides of the stabilizer body. The stabilizer body is usually elastically supported by the vehicle body side member at two points on the left and right.
The support structure has a structure as described in Patent Document 1, for example. That is, as shown in FIG. 10, the outer periphery of the stabilizer body 1 is covered with an elastic body 2 made of a bowl-shaped cylinder as viewed from the stabilizer axial direction, and a bracket 3 made of an arcuate plate member is formed on the outer periphery of the elastic body 2. The bracket 3 is fixed to the mounting surface 4 in a state where the elastic body 2 is pressed against the mounting surface 4 of the vehicle body side member by the bracket 3. In addition, although the support structure described in Patent Document 1 is an example in which the mounting surface 4 of the vehicle body side member faces downward, the orientation of the mounting surface 4 may face upward or in the vehicle front-rear direction. .
Japanese Utility Model Publication No. 5-63912

From the viewpoint of increasing the efficiency of the stabilizer, the elastic body 2 is intended to give the stabilizer body a degree of freedom in the rotational direction and to increase the rigidity in the direction perpendicular to the stabilizer body 1 (particularly in the vertical direction).
In addition to the torsional force from the stabilizer 1, the elastic body 2 also receives a stabilizer axial force by swinging the stabilizer 1 in the axial direction and the like. Considering that the torsional reaction force, which is the original function of the stabilizer, is generated in a state where the elastic body 2 is deflected in the direction perpendicular to the axis due to the force acting in the direction perpendicular to the axis, Since the portion is absorbed by the bending of the elastic body 2 in the direction perpendicular to the axis, the efficiency of generating the stabilizer torsional reaction force is reduced accordingly.

In the above support structure, as shown in FIG. 10, when assembling the bracket with a clamping force (pressing load) in the axial direction so as to press the elastic body 3 against the mounting surface 4 with the bracket 3, The axial end face of the elastic body 3 is deformed out of the plane so that the axial end face of the elastic body 3 escapes in the stabilizer axial direction by the clamping force in the direction, so that the rigidity of the elastic body 3 in the axial direction is lowered.
The present invention has been made paying attention to the above points, and it is an object of the present invention to provide a stabilizer support structure capable of increasing the rigidity in the axial direction while ensuring the degree of freedom in the rotational direction of the stabilizer. It is said.

In order to solve the above-described problems, the present invention provides a support structure for elastically supporting a stabilizer on a vehicle body side member, an elastic body covering the outer periphery of the stabilizer, and the elastic body disposed on the outer periphery of the elastic body. In the support structure consisting of a bracket attached to the side member,
The elastic body is provided with restraining means for suppressing deformation of the elastic body in the stabilizer axial direction at both ends in the stabilizer axial direction.
Furthermore, the present invention provides, as the restraining means, a plate-like restraining member that extends along the axial direction of the stabilizer and has a rigidity higher than that of the elastic body, with respect to both ends of the elastic body in the stabilizer axial direction. The restraining member is embedded in an elastic body, and further, the restraining member is a generally annular member extending along the circumferential direction and is divided into a plurality of parts along the circumferential direction. In addition, it has a cylindrical shape and is cut along the stabilizer axial direction so as to connect the inner diameter surface and the outer diameter surface at at least one of the division positions.

  According to the present invention, it is possible to suppress a decrease in rigidity of the elastic body in the axial direction.

Next, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram illustrating a support structure for a stabilizer.
The present support structure is a structure in which a portion of the stabilizer 1 (stabilizer body) extending in the vehicle width direction is elastically supported by the vehicle body side member via the elastic body 2. That is, this support structure is fixed to the mounting surface 4 while pressing the elastic body 2 toward the mounting surface 4 of the vehicle body side member, and the cylindrical elastic body 2 having a through hole 2a through which the stabilizer 1 can pass. A plate-like bracket 3.

In the following description, the case where the mounting surface 4 faces upward and the stabilizer 1 is elastically supported on the mounting surface 4 will be described as an example. However, the mounting surface 4 faces downward or in the vehicle front-rear direction. However, it is applicable with the same configuration. In the following description, the axial direction refers to the axial direction of the stabilizer 1.
The elastic body 2 is a substantially cylindrical member whose main body 2b has a flat bottom surface (a surface that contacts (opposes) the mounting surface 4). However, as shown in FIG. 1 and FIG. 2 in which the elastic body is viewed from the axial direction, both end portions in the axial direction are flange portions 2c having circular (annular) circular sections in the arcuate direction. Moreover, since the arc-shaped protrusion 2d is formed along the circumferential direction in the central portion in the axial direction, the central portion of the bottom surface is an arc-shaped recess.

  And the restraint member 5 which consists of resin and metal whose rigidity is higher than the elastic body 2 is embedded in the left and right flange portions 2c, respectively. The constraining member 5 is arranged coaxially with respect to the shaft and extends in the axial direction as a whole. The constraining member 5 is an annular part 5a (constraining member main body) as a whole, and continuously along the inner diameter side of the annular part 5a along the axial direction. And a plate-like horizontal portion 5b (foot portion) extending toward the center of the elastic body 2. The horizontal portion 5b has an arc shape along the outer peripheral surface of the stabilizer 1 when viewed from the axial direction. Note that the annular portion 5a may be arranged in an inclined state so that the inner diameter side is slightly tilted toward the center side of the elastic body from the axial direction. In short, it suffices if the axial end surface of the elastic body 2 can be prevented from being deformed in the out-of-plane direction.

  As shown in FIG. 2, the restraining member 5 of the present embodiment is separated at two places in the circumferential direction (positions reversed by 180 degrees). Specifically, the constraining member 5 is composed of two upper and lower members by separating at two locations facing each other in the vehicle longitudinal direction across the through hole 2a. At one of the two separation positions, the elastic body 2 is cut along the axial direction so as to connect the outer diameter surface and the inner diameter surface. Reference numeral 2e is a cut surface. Thereby, as shown in FIG. 3, the portion of the cut surface 2 e can be expanded and the stabilizer 1 can be inserted and assembled. This facilitates the assembly of the elastic body 2 to the stabilizer 1.

  Here, the shape of the mounting surface 4 to which the elastic body 2 is attached is also a shape in which the lower and left flange portions 2c of the elastic body 2 and the convex portions at the center can be fitted, as shown in FIG. . That is, left and right recesses into which the lower portions of the two flange portions 2c are inserted are formed, and an arc-shaped recess is also formed in the central portion in the axial direction. The concave portion has a role of suppressing the displacement of the elastic body 2 in the axial direction, and has a role of making the initial deflection of the elastic body 2 uniform even if the outer peripheral surface of the elastic body 2 has irregularities.

  The bracket 3 includes a bracket body 3a disposed on the outer periphery of the elastic body 2, and left and right attachment portions (not shown in FIG. 1) that are fixed to the attachment surface 4 continuously on both sides of the bracket body 3a. Consists of The bracket body 3a is an arc-shaped plate member having the same contour as the outer periphery of the elastic body 2 when viewed from the axial direction, and rising portions 3c rising in the outer diameter direction along the circumferential direction are formed on both sides in the axial direction. ing. The axial length of the bracket body 3a is shorter than that between the left and right restraining members 5, 5. The bracket body 3a is disposed between the left and right restraining members 5, and the left and right restraining members 5 are arranged. Is assembled in a state where the elastic body 2 located between the outer periphery and the elastic body 2 is pressed from the outer periphery toward the mounting surface 4. In the state in which this assembly is completed, the rising portion 3c of the bracket body 3a and the outer peripheral side of the annular portion 5a are opposed in the axial direction.

And in the state which has arrange | positioned the bracket main body 3a as mentioned above, the attachment part on either side is attached to a vehicle body side member by fastening means, such as a volt | bolt.
At the time of the assembly, the elastic body 2 tends to be deformed out of the plane so as to swell in the axial direction by a load (clamping force) in the axial direction from the bracket 3. The deformation (indicated by the wavy line in FIG. 1) that is suppressed and expands in the axial direction is avoided.
Thereby, the rigidity of the elastic body 2 in the axial direction can be improved even after assembly.
Here, in the assembled state, the outer diameter sides of the left and right restraining members 5 are arranged in a state of being close to the rising portion 3c of the bracket 3 and facing the axial direction, so that each restraining member 5 is in the axial direction. Positioning is performed and movement of at least the outer peripheral side position in the axial direction is restricted.

  Further, since the inner diameter sides of the left and right restraining members 5 are arranged opposite to and close to the stabilizer 1 in the axial direction, positioning in the axial direction is performed. In particular, in the present embodiment, by providing the horizontal portion 5b extending in the axial direction on the inner diameter side of each restraining member 5, the horizontal portion 5b comes close to the outer periphery of the stabilizer 1 and is positioned in the axial direction. As a result, it is more effectively prevented that the restraining member 5 is tilted in the axial direction, so that the restraining member 5b is more effectively prevented from tilting, and the out-of-plane displacement of the elastic body 2 in the axial direction is reduced. It can be kept smaller. That is, the amount of deformation of the elastic body 2 that undergoes deformation in the axial direction and the torsional direction of the stabilizer 1 can be increased by the amount by which the amount of deformation in the out-of-plane direction is suppressed. It is advantageous in nature.

Further, since the restraining member 5 is completely embedded in the elastic body 2, the elastic body 2 having elasticity is inserted between the bracket body 3 a and the stabilizer 1. It is possible to avoid the generation of abnormal noise.
Moreover, in the said embodiment, since the bracket main body 3a is arrange | positioned between the right and left restraint members 5, and it is a structure which provides a clamping force to an axial direction, the flange part 2c part receives relatively small clamping force. Therefore, the pressing force to the stabilizer 1 becomes a large state at the portion of the main body 2a. As a result, in the present embodiment, the flange portion 2c incorporating the highly rigid restraining member 5 receives the load in the axial direction and increases the rigidity in the axial direction, and the torsion of the stabilizer 1 mainly causes the main body 2b. The main body 2a mainly generates a torsional reaction force, so that the degree of freedom in the rotation direction of the stabilizer 1 is ensured.

Here, in the said embodiment, although the case where the restraint member 5 is embed | buried in the elastic body 2 is illustrated, it is not limited to this. For example, an annular plate member that is in axial contact with the elastic body 2 may be provided on the axial end surface of the elastic body 2, and the plate member may be directly supported by the stabilizer 1 or the vehicle body side member. However, the above configuration is easier.
Moreover, although the said embodiment illustrated the case where the cross section seen from the axial direction of the restraint member 5 is L-shaped, it is not limited to this. For example, it may be an inverted T-shape. Further, the horizontal portion 5b on the inner diameter side may be omitted. However, the one with the horizontal portion can more effectively prevent the restraining member 5 from falling down.

(Second Embodiment)
Next, a second embodiment will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the components similar to the said 1st Embodiment, and the description is abbreviate | omitted.
This embodiment is an example in the case where the restraint member 5 is supported by the bracket 3. That is, as shown in FIG. 4, the outer diameter side of the semi-annular plate-like restraining member 5 is formed integrally with the axial end of the bracket 3. In this case, the interval between the constraining members 5 facing each other is set to a value substantially equal to the axial length of the elastic body 2.
Reference numeral 7 in the figure denotes a lateral slip prevention band made of a snap ring or the like.

  At this time, as shown in FIG. 5, a horizontal portion 5 b extending toward the elastic body 2 is formed on the inner diameter side of the restraining member 5, and the horizontal portion 5 b is preferably embedded so as to be inserted into the elastic body 2. If it does in this way, the protrusion to the out-of-plane direction of the elastic body 2 can be prevented more effectively. In this example, the case where the bracket 3 is divided into two parts with the central part in the axial direction as a boundary so as to easily insert the left and right horizontal parts 5b is illustrated.

Further, as shown in FIG. 6, the distance between the left and right restraint members 5 is made shorter than that of the elastic body 2, and the clamp provided on the bracket 3 is inserted into the elastic body 2 from above to enter the elastic body 2. You may make it embed. If it does in this way, generation | occurrence | production of the noise by the contact with the restraint member 5 and the stabilizer 1 can be prevented. In the structure of FIG. 6, a semicircular restraining member 10 extending in the direction perpendicular to the axis is also provided on the mounting surface. In the form as shown in FIG. 4, the elastic body 2 may be attached to the inner diameter side of the restraining member 5 to prevent direct contact between the inner diameter end surface of the restraining member 5 and the stabilizer 1.
Other configurations, operations, and effects are the same as those in the above embodiment.
In the second embodiment as well, the amount of displacement of the stabilizer 1 in the direction perpendicular to the axis is restricted by the restraining member 5.

(Third embodiment)
Next, a third embodiment according to the present invention will be described with reference to the drawings. In addition, about the components similar to said each embodiment, the same code | symbol is attached | subjected and demonstrated.
The basic configuration of this embodiment is the same as that of each of the above embodiments, but differs in that the restraining means is provided on the elastic body 2.
That is, as shown in FIG. 7, the elastic body 2 is a substantially cylindrical tube member and has a through hole 2 a that penetrates the stabilizer 1. The diameter of the through hole is reduced by providing a convex portion 2g that protrudes toward the stabilizer 1 in which the diameter of the end portion in the stabilizer axial direction is smaller than the diameter of the stabilizer central portion and smaller than the diameter of the stabilizer 1. Part 2f is configured.

  In the above configuration, in a state in which the elastic body 2 is assembled to the stabilizer 1, the elastic body 2 is more rigid at both ends in the stabilizer axial direction as a result of the compressive deformation of both ends in the stabilizer axial direction than the central portion. Thus, it is possible to reduce the deformation of the elastic body 2 in the out-of-plane direction when it is about to be displaced in the axial direction. At this time, since the rigidity of the central portion in the axial direction of the elastic body 2 is not so high, it is possible to improve the rigidity in the axial direction while suppressing an increase in the rotational support rigidity of the elastic body 2 with respect to the stabilizer 1. I can do it.

Further, when the stabilizer 1 is about to be displaced in the axial direction with respect to the elastic body 2, the reduced diameter portion 2 f exhibits a wedge effect and generates a reaction force in a direction that opposes the axial displacement of the stabilizer 1. Thus, the swing of the slider 1 in the axial direction can be suppressed.
Here, in the present embodiment, as shown in FIG. 7, the convex portion 2 g is rectangular in the axial direction, thereby simplifying the structure of the convex portion 2 g and facilitating the processing.
Other structures and operational effects are the same as those in the above embodiments.
Here, you may use together each restraint means demonstrated by the said 1st and 2nd embodiment suitably.

  Further, the convex portions 2g constituting the reduced diameter portion 2f may be formed on the entire circumference in the circumferential direction, but may be formed at predetermined intervals along the circumferential direction as shown in FIG. . Thus, when the convex part 2g which protrudes in the direction of the stabilizer 1 is provided for every predetermined interval, the stabilizer in the said convex part 2g is adjusted by adjusting the number of the convex parts 2g and the protrusion amount of each convex part 2g. It becomes easy to adjust the support rigidity in the rotation direction.

  The surface 2h facing the central portion side of the elastic body 2 of the convex portion 2g may be an inclined surface that is inclined so as to move away from the central portion toward the inner diameter as shown in FIG. By forming the convex portion 2g into a wedge shape in this way, the axial load distribution in the reduced diameter portion 2f becomes a large inclined distribution on the end side, and the wedge effect can be exhibited more effectively. It becomes.

It is sectional drawing which shows the support structure which concerns on 1st Embodiment based on this invention. It is the figure seen from the axial direction which shows the elastic body which concerns on 1st Embodiment based on this invention. It is a figure which shows the example of an assembly | attachment of the stabilizer which concerns on 1st Embodiment based on this invention. It is a figure which shows the support structure which concerns on 2nd Embodiment based on this invention, (a) is the figure seen from the vehicle front-back direction, (b) is the figure seen from the axial direction. It is a figure which shows the support structure which concerns on 2nd Embodiment based on this invention, (a) is the figure seen from the vehicle front-back direction, (b) is the figure seen from the axial direction. It is a figure which shows the support structure which concerns on 2nd Embodiment based on this invention, (a) is the figure seen from the vehicle front-back direction, (b) is the figure seen from the axial direction. It is sectional drawing for demonstrating the support structure which concerns on 3rd Embodiment based on this invention. It is the figure seen from the axial direction for demonstrating the support structure which concerns on 3rd Embodiment based on this invention. It is sectional drawing for demonstrating another support structure based on 3rd Embodiment based on this invention. It is a figure explaining the conventional structure and a subject.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stabilizer 2 Elastic body 2a Through hole 2f Reduced diameter part 2g Convex part 2g Inclined surface 3 Bracket 4 Mounting surface 5 Constraining member 5a Annular part 5b Horizontal part

Claims (14)

A support structure that elastically supports a stabilizer on a vehicle body side member, and includes a resilient body that covers the outer periphery of the stabilizer at a support position, and a bracket that is disposed on the outer circumference of the elastic body and attaches the elastic body to the vehicle body side member. In structure
At both ends of the elastic body in the stabilizer axial direction, provided with restraining means for suppressing deformation of the elastic body to the outside in the stabilizer axial direction ,
As the restraining means, a plate-like restraining member having a rigidity higher than that of the elastic body is provided for both ends of the elastic body in the stabilizer axial direction and extending along the axial direction of the stabilizer.
The restraining member is embedded in an elastic body,
Further, the restraining member is an annular member as a whole extending along the circumferential direction and is divided into a plurality of parts along the circumferential direction.
The elastic body has a cylindrical shape and is cut along the stabilizer axial direction so as to connect the inner diameter surface and the outer diameter surface at at least one of the division positions. Stabilizer support structure. The stabilizer support structure according to claim 1 , wherein the bracket is disposed so as to be sandwiched between two opposing restraining members. It said restraining member, according to claim 1 or claim 2, characterized in that it comprises a foot portion to form a constraining member body and a surface facing in the stabilizer and direction perpendicular to the axis to form a surface facing the stabilizer axis Stabilizer support structure. The stabilizer support structure according to claim 1 , wherein the restraining member is integrated with the bracket and extends from the bracket toward the stabilizer. The stabilizer support structure according to claim 4 , wherein the restraining member is embedded in the elastic body from the radially outer side toward the inner side. The restraint member includes a restraint member main body that forms a surface facing the stabilizer axial direction, and a foot portion that forms a surface facing the stabilizer in a direction perpendicular to the axis, and at least a distal end portion extending toward the elastic body of the foot portion is an elastic body. stabilizer supporting structure according to claim 4 or claim 5, characterized in that it is embedded in. The bracket is an arcuate member when viewed from the stabilizer axial direction, and in the stabilizer support structure that presses and fixes the elastic body against the mounting surface of the vehicle body side member,
The stabilizer support structure according to claim 4 or 5 , wherein a recess is formed in a surface of the vehicle body side member facing the elastic body, and the elastic body is fitted into the recess. The bracket is an arcuate member when viewed from the stabilizer axial direction, and in the stabilizer support structure that presses and fixes the elastic body against the mounting surface of the vehicle body side member,
The stabilizer support structure according to any one of claims 4 to 7 , wherein a protrusion is provided at a portion of the vehicle body side member that faces the axial end of the elastic body. The stabilizer support structure according to any one of claims 1 to 8 , wherein a protrusion is provided on an outer peripheral surface of the stabilizer at an outer position of the elastic body and the bracket. As the restraining means, the diameter of the end portion in the axial direction of the stabilizer in the through hole that passes through the stabilizer of the elastic body is a reduced diameter portion that is smaller than the diameter of the stabilizer central portion of the through hole and smaller than the diameter of the stabilizer. The stabilizer support structure according to any one of claims 1 to 9 , wherein Stabilizer supporting structure according to claim 1 0, characterized in that the said reduced diameter portion by providing the convex portion protruding to the stabilizer side from the stabilizer axial end of the through portion. The convex portion, when viewed from direction perpendicular to the axis of the stabilizer, the stabilizer supporting structure according to claim 1 1, characterized in that a rectangular. Surface facing the central portion of the elastic body of the convex portion, the stabilizer supporting structure according to claim 1 1, characterized in that it is inclined away from the central portion toward the inner diameter. The convex portion is a stabilizer supporting structure as claimed in any one of claims 1 1 to claims 1 to 3, characterized in that it is divided into a plurality in the circumferential direction.

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