JP5048410B2 - Stabilizer support structure - Google Patents

Description

  In the present invention, an inner peripheral surface of a cylindrical stabilizer bush is fitted to an outer peripheral surface of a torsion portion of a stabilizer that connects the left and right suspension devices, and the outer peripheral surface of the stabilizer bush is fixed to the mounting portion of the vehicle body and the vehicle body. The present invention relates to a support structure for a stabilizer that is fixed by being pinched with a fixing member.

The stabilizer bush cylinder is fitted to the outer periphery of the torsion part of the stabilizer that connects the left and right suspension devices, and the cylinder body is supported by the mounting bracket, and the annular lip part is provided at the opening end of the stabilizer bush cylinder. It is known from Patent Document 1 below to prevent sand particles and muddy water from entering the sliding surface between the cylindrical body of the stabilizer bush and the stabilizer.
Japanese Utility Model Publication No. 63-32490

  By the way, since the cylinder of the stabilizer bush is provided with a slit portion extending in the axial direction in the above-mentioned conventional one, when the left and right wheels move up and down in opposite phases and the stabilizer is twisted and deformed, the stabilizer bush cylinder A load in the radial direction was applied to the body, and the slit portion opened, and sand particles and muddy water could enter the sliding surface with the stabilizer. When sand particles or muddy water enters the sliding surface between the stabilizer bush and the stabilizer, problems such as abnormal noise may occur and wear on the surface of the stabilizer may be promoted.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to prevent sand grains and muddy water from entering a sliding surface with a stabilizer by opening a slit formed in a stabilizer bush.

In order to achieve the above object, according to the invention described in claim 1, the inner peripheral surface of the cylindrical stabilizer bush is fitted to the outer peripheral surface of the torsion portion of the stabilizer connecting the left and right suspension devices, In the stabilizer support structure in which the outer peripheral surface of the stabilizer bush is clamped and fixed between the mounting portion of the vehicle body and a fixing member fixed to the vehicle body, the axial end of the inner peripheral surface of the stabilizer bush some of the curved portion continuous to the torsion portion of the stabilizer are fitted, the stabilizer bush Rutotomoni comprises a slit cut along the axis to the inner peripheral surface from the outer peripheral surface, said slits of the curved portion of the stabilizer are arranged in the opposite direction to the bending direction, at least the open end of the end portion of the inner peripheral surface of the stabilizer bush Definitive wherein only at positions sandwiching the slit, stabilizer, characterized in that said slit is formed gradually shallower as that chamfered portions respectively radially outward and circumferential sides from a position intersecting the inner peripheral surface A support structure is proposed.

  According to a second aspect of the present invention, in addition to the structure of the first aspect, the chamfered portion is a smooth concave curved surface formed symmetrically across the slit. A support structure is proposed.

According to the invention described in claim 3, in addition to the configuration of claim 1 or 2, the acute angle formed by the axis of the stabilizer bush and the chamfered portion is 45 ° to 75 °. A stabilizer support structure characterized by the above is proposed .

According to the invention described in or claim 4, in addition to any one of claims 1 to 3, the portion excluding the least axial ends of the outer peripheral surface of the stabilizer bush, the diameter A stabilizer support structure characterized in that a recess recessed in the direction is formed is proposed.

According to the invention described in claim 5 , in addition to the configuration of any one of claims 1 to 4 , a recess is formed in the axial direction at a position avoiding the vicinity of the slit on the side surface of the stabilizer bush. A support structure for a stabilizer is proposed, characterized in that a concave portion is formed.

According to a sixth aspect of the present invention, in addition to the configuration of the fifth aspect , the concave portion is formed so as to surround the periphery of the axis while avoiding the vicinity of the slit. A support structure is proposed.

According to the configuration of the first aspect, the stabilizer bush is fitted to the outer peripheral surface of the torsion portion of the stabilizer and is fixed by being sandwiched between the mounting portion of the vehicle body and the fixing member. The stabilizer bush is provided with a slit cut along the axis thereof, and only at a position sandwiching the slit at the opening end of the inner peripheral surface of the stabilizer bush from the position where the slit intersects the inner peripheral surface, and radially outward and circular. since each formed gradually shallower as that chamfered portion toward both sides in the circumferential direction, when the stabilizer bush is compressed to be clamped by radially inwardly between the fixing member body of the attachment portion, of which A load inward in the axial direction can be generated at a position sandwiching the slit at the opening end of the peripheral surface, and the opening end can be prevented from opening up. Thereby, it is possible to prevent sand particles and muddy water from entering between the inner peripheral surface of the stabilizer bush and the torsion portion of the stabilizer, and it is possible to prevent generation of noise and wear of the stabilizer. In addition, the stabilizer bush does not have a thin lip, so durability is improved.

In addition, since a part of the curved portion connected to the torsion portion of the stabilizer is fitted to one end portion of the inner peripheral surface of the stabilizer bush in the axial direction, the stabilizer can be positioned in the vehicle width direction using the stabilizer bush. . Moreover, when the wheel moves up and down, the bending portion moves up and down with respect to the torsion portion of the stabilizer and twists the inner peripheral surface of the stabilizer bush, but by arranging the slit in the opposite direction to the bending direction of the bending portion, The opening of the slit due to the twisting can be prevented, and the invasion of sand grains and earth and sand can be effectively prevented.

  According to the second aspect of the present invention, since the chamfered portion of the stabilizer bush is formed of a smooth concave curved surface formed symmetrically with the slit interposed therebetween, the position of the slit extends in the circumferential direction from the center line of the chamfered portion. Even if it is slightly deviated, the function of the chamfered portion is not impaired, so that high machining accuracy is not required when forming the slit, and the machining cost can be reduced.

According to the third aspect of the present invention, since the acute angle formed by the axis of the stabilizer bush and the chamfered portion is set to 45 ° to 75 °, the inner peripheral surface is pressed when foreign matter is pressed against the chamfered portion of the stabilizer bush. It is possible to make it difficult for the opening end of the opening to be opened, and to prevent the foreign matter sandwiched between the chamfered portions from being bitten and discharged easily .

With the fourth addition, since a recess recessed in the portion excluding the axial end portion in the radial direction of the outer peripheral surface of the stabilizer bush, the stabilizer bush between the vehicle body mounting portion and the fixing member When fixing by clamping, the inner periphery is strongly pressed against the torsion bar at both ends in the axial direction where the rigidity of the stabilizer bushing is increased because there is no recess, and the slit is reliably prevented from opening at the chamfered part. can do. In addition, the presence of a recess reduces the contact pressure between the inner peripheral surface and the torsion bar at the axially intermediate part where the rigidity of the stabilizer bushing is reduced, and the torsion part rotates smoothly with respect to the stabilizer bushing. Can be increased.

According to the fifth aspect of the present invention, since the concave portion recessed in the axial direction is formed at a position avoiding the vicinity of the slit on the side surface of the stabilizer bush, the stabilizer bush is sandwiched between the mounting portion of the vehicle body and the fixing member. When fixing, by relatively increasing the rigidity in the vicinity of the slit where there is no concave portion, it is possible to securely prevent the slit from being opened by strongly adhering the slit at the chamfered portion.

According to the configuration of the sixth aspect , since the recess is formed so as to surround the periphery of the axis while avoiding the vicinity of the slit, only the rigidity in the vicinity of the slit can be effectively increased.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 to 6 show a first embodiment of the present invention. FIG. 1 is a perspective view showing a state in which a stabilizer is attached to a vehicle. FIG. 2 is an enlarged view in two directions in FIG. 2 is a sectional view taken along line 3-3 in FIG. 2, FIG. 4 is a sectional view taken along line 4-4 in FIG. 2, FIG. 5 is a diagram showing the shape of the stabilizer bush, and FIG. .

  As shown in FIG. 1, strut-type suspension devices S, S for suspending left and right wheels W, W include left and right knuckles 11, 11 supported on a vehicle body via suspension arms 10, 10 so as to be movable up and down. The dampers 12 and 12 coupled to the upper portions of the knuckles 11 and 11 and extending upward, the suspension springs 13 and 13 disposed coaxially on the outer periphery of the dampers 12 and 12, and the upper portions of the left and right knuckles 11 and 11 And a stabilizer 14 for connecting the two.

  The stabilizer 14 smoothes the torsion part 15 linearly extending in the vehicle width direction, the left and right arm parts 16 and 16 extending linearly from both ends of the torsion part 15 to the rear of the vehicle body, and the torsion part 15 and the arm parts 16 and 16. And left and right curved portions 17 connected to each other. The distal ends of the left and right arm portions 16, 16 are connected to the dampers 12, 12 via links 22, 22, respectively. Stabilizer bushes 18, 18 made of cylindrical rubber are fitted to both ends of the torsion portion 15 adjacent to the left and right curved portions 17, 17, and these stabilizer bushes 18, 18 are U-shaped attachments of the vehicle body 19. It is sandwiched and supported between a portion 19a (see FIG. 2) and a plate-like mounting bracket 21 fixed to the vehicle body 19 with bolts 20 and 20 so as to cover the mounting portion 19a.

  As is apparent from FIGS. 2 to 5, each stabilizer bush 18 includes a flat first outer peripheral surface 18 a and a U-shaped cross section perpendicular to the axis L and a wavy cross section in the direction along the axis L. 2 An outer peripheral surface 18b, a pair of side surfaces 18c and 18c, and an inner peripheral surface 18d having a circular cross section that is opened in both side surfaces 18c and 18c and into which the torsion portion 15 of the stabilizer 14 is fitted. The stabilizer bush 18 is formed with a slit 18e having a split groove shape that is disposed in a plane including the axis L and reaches the inner peripheral surface 18d from the second outer peripheral surface 18b. Further, chamfered portions 18f and 18f are formed at portions where the inner peripheral surface 18d is opened to the side surfaces 18c and 18c of the stabilizer bush 18 so as to sandwich the slit 18e from both sides in the circumferential direction. Further, a rectangular positioning projection 18g is projected from the center of the flat first outer peripheral surface 18a of the stabilizer bush 18.

  Each of the chamfered portions 18f is formed only on both sides sandwiching the slit 18e, and the shape viewed in the direction of the axis L is an isosceles triangle shape from the inner peripheral surface 18d of the stabilizer bush 18 toward the radially outer side. It is tapered and its apex is located on the slit 18e. The depth of the chamfered portion 18f in the direction of the axis L is deepest at a position where the slit 18e intersects the inner peripheral surface 18d of the stabilizer bush 18 and gradually becomes shallower radially outward therefrom, and at the same time in the circumferential direction. It gradually becomes shallower toward both sides.

  The stabilizer bush 18 having the shape as described above can be fitted to the outer peripheral surface of the torsion portion 15 of the stabilizer 14 by elastically deforming and widening the slit 18e. Then, the U-shaped second outer peripheral surface 18b of the stabilizer bush 18 is fitted into the U-shaped mounting portion 19a of the vehicle body 19, and the flat first outer peripheral surface 18a is held in contact with the flat mounting bracket 21. The

  At this time, the positioning projection 18g of the stabilizer bush 18 is fitted into the positioning hole 21a of the mounting bracket 21, and the second outer peripheral surface 18b having a corrugated cross section along the axis L is formed on the mounting portion 19a of the vehicle body 19 having the same shape. By closely contacting, the stabilizer bush 18 is positioned so as not to move in the direction of the axis L. Moreover, the stabilizer bush 18 is sandwiched between the vehicle body 19 and the mounting bracket 21 and compressed radially inward with a predetermined tightening allowance, and its inner peripheral surface 18d is pressed against the outer peripheral surface of the torsion portion 15 of the stabilizer 14 and is slit. 18e is pressed to close.

  The diameter of the inner peripheral surface 18d in the free state of the stabilizer bush 18 is formed larger (for example, h = 0.5 mm) by h (see FIG. 5A) than the diameter of the torsion part 15 of the stabilizer 14. When the mounting bracket 21 is compressed inward in the radial direction when being fixed to the mounting portion 19a of the vehicle body 19, the contact surface pressure between the inner peripheral surface 18d of the stabilizer bush 18 and the outer peripheral surface of the torsion portion 15 is more than necessary. Considered not to be high. Thereby, the load which compresses the stabilizer bush 18 radially inward can be made to act on the slit 18e effectively, and can be made to closely_contact | adhere so that the slit 18e may not open.

  Further, a part of the curved portions 17 and 17 connected to both ends of the torsion portion 15 of the stabilizer 14 is engaged with the outer end portions in the vehicle width direction of the inner peripheral surfaces 18d and 18d of the left and right stabilizer bushes 18 and 18. Thus, the stabilizer 14 can be positioned in the vehicle width direction without providing a special positioning member for the stabilizer 14.

  When the left and right wheels W, W move up and down in the same phase, the stabilizer 14 configured in this way is because the left and right arm parts 16, 16 move up and down in the same phase and the torsion part 15 is not twisted. When the left and right wheels W, W move up and down in opposite phases, but no roll moment is generated, the left and right arm parts 16, 16 move up and down in opposite phases and the torsion part 15 is twisted, so that the rolling of the vehicle body The roll moment which suppresses can be generated and the steering stability of a vehicle can be improved.

  By the way, when the left and right wheels W, W move up and down in opposite phases and the torsion part 15 of the stabilizer 14 is twisted and deformed, the left and right ends of the torsion part 15 supported by the stabilizer bushes 18 and 18 respectively move in the vertical direction. Since the load to be generated is generated, the slits 18e and 18e of the stabilizer bushes 18 and 18 are opened from the portion connected to the inner peripheral surfaces 18d and 18d, and sand particles and muddy water enter from the gaps generated there, It may cause wear. In the present embodiment, the chamfered portions 18f, 18f formed at the positions sandwiching the slit 18e at both ends of the inner peripheral surface 18d of the stabilizer bush 18 in the direction of the axis L prevent the slit 18e from opening, Muddy water can prevent intrusion.

  That is, when the chamfered portion 18f is provided at a position sandwiching the slit 18e at the end in the axis L direction of the inner peripheral surface 18d of the stabilizer bush 18, a compressive load A in the direction orthogonal to the axis L in FIG. Thus, an inward load B in the direction of the axis L can be generated, and the surface pressure at which the a portion of the opening end of the inner peripheral surface 18d at the position sandwiching the slit 18e contacts the torsion portion 15 can be increased. As a result, even when a radial load is applied to the torsion portion 15, a gap is prevented from being generated between the outer peripheral surface and the inner peripheral surface 18 d of the stabilizer bush 18, and sand particles from the end of the slit 18 e are prevented. And muddy water can be prevented from entering. In addition, since the stabilizer bush 18 does not have a thin lip, durability is improved.

  The function of the chamfered portion 18f to prevent sand grains and muddy water from entering varies depending on the magnitude of the acute angle θ formed by the axis L of the stabilizer bush 18 and the chamfered portion 18f. As shown in FIG. 6, when the sand particles S are pressed against the chamfer 18f in the direction of the axis L by the load F, the load F is in the direction orthogonal to the component F1 in the direction orthogonal to the chamfer 18f and the direction of the axis L. The reaction force F2 ′ of the component F2 which is decomposed into the component F2 and orthogonal to the axis L attempts to push the chamfer 18f open.

  FIGS. 6A and 6B show cases where the acute angle θ is 65 ° and 35 °, respectively. In the case of FIG. 6A where the acute angle θ is large, the reaction force F2 ′ that pushes and opens the chamfered portion 18f is small, but in the case of FIG. 6B where the acute angle θ is small, the chamfered portion 18f is pushed open. The reaction force F2 'to be increased is increased. Therefore, when the acute angle θ is increased, the foreign matter is less likely to bite into the chamfered portion 18f, and the foreign matter once bited in is easily discharged without staying there. For the above reasons, the lower limit of the acute angle θ is preferably 45 °.

  On the other hand, as described above, when the acute angle θ approaches a right angle, the chamfered portion 18f is pushed out to the outside in the axis L direction by a load for compressing the stabilizer bush 18 radially inward, so that the acute angle θ opens. The upper limit of θ is preferably 75 °. Accordingly, if the acute angle θ is set in the range of 45 ° to 75 °, the opening end of the inner peripheral surface 18d of the stabilizer bush 18 is difficult to open, and the foreign matter bites into the chamfered portion 18f and the bite foreign matter is difficult to be discharged. Can be prevented.

  Next, a second embodiment of the present invention will be described with reference to FIG.

  The chamfered portion 18f of the first embodiment is formed in an isosceles triangle shape when viewed in the axis L direction, but the chamfered portion 18f of the second embodiment is formed in a crescent shape when viewed in the axis L direction. The other configurations are the same. The function of preventing the intrusion of sand particles and muddy water through the slit 18e is the same in both the first embodiment and the second embodiment, but the second embodiment improves the workability during manufacturing. Has the effect of

  That is, after the stabilizer bush 18 is molded, the slit 18e is cut by a cutter or a laser. At this time, as shown in FIG. 8A, with the isosceles triangular chamfered portion 18f of the first embodiment, the position of the slit 18e is slightly shifted in the circumferential direction. There is a possibility that the function of the chamfered portion 18f may be impaired due to a deviation from the apex of the chamfered portion 18f having an isosceles triangle shape. On the other hand, as shown in FIG. 8B, the crescent chamfered portion 18f of the second embodiment is hardly affected even if the position of the slit 18e is slightly shifted in the circumferential direction. The function of the chamfered portion 18f can be exhibited stably.

  Next, a third embodiment of the present invention will be described with reference to FIG.

  In the first and second embodiments, the inner peripheral surface 18d of the stabilizer bush 18 is formed in a straight cylindrical shape, but as described above, one end of the inner peripheral surface 18d of the stabilizer bush 18 in the axis L direction. Since a portion of the curved portion 17 of the stabilizer 14 is fitted to the portion, in the third embodiment, a portion on the outer side in the vehicle width direction of the inner peripheral surface 18d of the stabilizer bush 18 is replaced with the curved portion 17 of the stabilizer 14. It is curved to follow. The reason is as follows.

  When the wheel W moves up and down, the bending portion 17 swings up and down around the axis L via the arm portion 16 of the stabilizer 14, but when the bending portion 17 is fitted to the inner peripheral surface 18 d of the stabilizer bush 18. Since the inner peripheral surface 18d is twisted by the curved portion 17, there is a problem that the slit 18e is easily opened. However, in the present embodiment, the inner peripheral surface 18d of the stabilizer bush 18 is bent so as to follow the curved portion 17 of the stabilizer 14, so that the inner peripheral surface 18d of the stabilizer bush 18 is twisted by the swing of the curved portion 17. And the slit 18e can be made difficult to open.

  Furthermore, in the present embodiment, the position of the slit 18e of the stabilizer bush 18 is arranged in the direction opposite to the direction in which the curved portion 17 of the stabilizer 14 extends. This arrangement can also minimize the twisting of the inner peripheral surface 18d of the stabilizer bush 18 due to the swinging of the curved portion 17 and make it difficult to open the slit 18e.

  Next, a fourth embodiment of the present invention will be described with reference to FIG.

  In the fourth embodiment, the side surfaces 18c and 18c of the stabilizer bush 18 are inclined inward in the direction of the axis L from the first and second outer peripheral surfaces 18a and 18b toward the opening end side of the inner peripheral surface 18d. It is a thing. As described above, when the side surfaces 18c and 18c of the stabilizer bush 18 are inclined, the surface pressure at which the opening end of the inner peripheral surface 18d of the stabilizer bush 18 contacts the torsion portion 15 is increased by the same action as the chamfered portion 18f. Can do. Further, the contact surface pressure can be further increased by providing the chamfered portions 18f and 18f on both side portions of the slit 18e in which sand particles and muddy water easily enter.

  Next, a fifth embodiment of the present invention will be described with reference to FIG.

  In the fifth embodiment, an elongated groove-like recess 18h extending in parallel with the axis L is formed in the vicinity of the slit 18e on the second outer peripheral surface 18b of the stabilizer bush 18. The range of the concave portion 18h is limited to the central portion in the axis L direction of the stabilizer bush 18 and ends before the both end portions in the axis L direction.

  According to this embodiment, the rigidity of the central portion in the axis L direction of the stabilizer bush 18 formed with the recess 18h is lower than the rigidity of both end portions in the axis L direction, so that the stabilizer bush 18 is connected between the vehicle body 19 and the mounting bracket 21. And compressing inward in the radial direction, the compressive force strongly acts on both ends of the stabilizer bush 18 in the axis L direction, and it is effective to open the slit 18e on the side surfaces 18c and 18c of the stabilizer bush 18. Can be suppressed.

  In the fifth embodiment, the slit 18e is inclined so that the radially outer side is lower than the radially inner side, even if sand particles or muddy water enters the slit 18e. This is because the sand particles and the muddy water move outward in the radial direction and are easily discharged.

  Next, a sixth embodiment of the present invention will be described with reference to FIG.

  In the fifth embodiment, one recess 18h is formed in the vicinity of the slit 18e in the second outer peripheral surface 18b of the stabilizer bush 18. However, in the sixth embodiment, the second outer peripheral surface of the stabilizer bush 18 is formed. Two recesses 18h and 18h are formed in the vicinity of the slit 18e in 18b and on the opposite side.

  Also according to the sixth embodiment, it is possible to achieve the same function and effect as those of the fifth embodiment described above.

  Next, a seventh embodiment of the present invention will be described with reference to FIG.

  In the seventh embodiment, concave portions 18i and 18i that are recessed in the direction of the axis L are formed in the upper and lower portions of the side surfaces 18c of the stabilizer bush 18 that are far from the slit 18e. When the stabilizer bush 18 is sandwiched between the vehicle body 19 and the mounting bracket 21 and compressed inward in the radial direction, the rigidity in the vicinity of the recesses 18i and 18i is reduced, and therefore a portion having high rigidity away from the recesses 18i and 18i. It is possible to effectively prevent the slit 18e from being opened when a radial compressive load is applied to the torsion portion 15 of the stabilizer 14 by applying a strong compressive load to the slit 18e existing in the.

  Next, an eighth embodiment of the present invention will be described with reference to FIG.

  The eighth embodiment is a modification of the above-described seventh embodiment. In the seventh embodiment, the two recesses 18i and 18i are provided. In the form, a C-shaped recess 18j arranged so as to surround the axis L is formed so as to avoid the slit 18e.

  According to the eighth embodiment, it is possible to more effectively suppress the opening of the slit 18e by increasing only the rigidity in the vicinity of the slit 18e as compared with other portions.

  Next, a ninth embodiment of the present invention will be described with reference to FIG.

  The ninth embodiment is a modification of the above-described eighth embodiment. In the eighth embodiment, the C-shaped recess 18j is configured by a groove. Then, the radially outer portion of the C-shaped recess 18j is open to the first and second outer peripheral surfaces 18a and 18b of the stabilizer bush 18. That is, the C-shaped recess 18j is not a groove but a notch.

  Also according to the ninth embodiment, it is possible to achieve the same function and effect as those of the eighth embodiment described above.

  Next, a tenth embodiment of the present invention will be described with reference to FIG.

  The tenth embodiment is a modification of the above-described ninth embodiment. In the ninth embodiment, the portion where the recess 18j of the stabilizer bush 18 opens to the first and second outer peripheral surfaces 18a and 18b. However, in the tenth embodiment, it is inclined with respect to the axis L.

  Also according to the tenth embodiment, the same operational effects as those of the ninth embodiment described above can be achieved.

  Next, an eleventh embodiment of the present invention will be described with reference to FIG.

  The eleventh embodiment is a modification of the above-described eighth embodiment. In the eighth embodiment, the inner peripheral surface 18d of the stabilizer bush 18 has a constant inner diameter in the axis L direction. However, in the eleventh embodiment, the inner diameter of the opening end of the inner peripheral surface 18d of the stabilizer bush 18 is smaller than the other part (the intermediate part in the axis L direction) and smaller than the outer diameter of the torsion part 15. Has been. As a result, the opening end of the inner peripheral surface 18d of the stabilizer bush 18 can be brought into close contact with the outer peripheral surface of the stabilizer 14, and sand particles and muddy water can be more reliably prevented.

  Next, a twelfth embodiment of the present invention will be described with reference to FIG.

  The twelfth embodiment is a modification of the above-described eleventh embodiment, in which the groove width of the C-shaped recess 18j in the eleventh embodiment is slightly enlarged.

  Also according to the twelfth embodiment, the same operational effects as those of the eleventh embodiment described above can be achieved.

  The embodiments of the present invention have been described above, but various design changes can be made without departing from the scope of the present invention.

For example, in the form of implementation has been illustrated suspension S of strut type, the stabilizer 14 of the present invention can be applied to a suspension system of any type.

  Further, in the embodiment, the stabilizer bush 18 is sandwiched and supported between the U-shaped mounting portion 19 a formed on the vehicle body 19 and the flat mounting bracket 21, but the U-shaped mounting is mounted on the flat surface of the vehicle body 19. You may support the stabilizer bush 18 using a bracket.

  In the embodiment, the arm portions 16 and 16 of the stabilizer 14 are connected to the dampers 12 and 12. However, the arm portions 16 and 16 of the stabilizer 14 may be connected to the knuckle 11 and 11 or the suspension arms 10 and 10. .

The perspective view which shows the attachment state to the vehicle of the stabilizer which concerns on 1st Embodiment. 2 direction enlarged view of FIG. 3-3 sectional view of FIG. Sectional view along line 4-4 in FIG. Diagram showing the shape of the stabilizer bush Action explanatory diagram of chamfered portion of stabilizer bush The figure which shows the shape of the stabilizer bush which concerns on 2nd Embodiment. Action explanatory drawing when processing the slit of the 1st and 2nd embodiment The figure which shows the shape of the stabilizer bush which concerns on 3rd Embodiment. The figure which shows the shape of the stabilizer bush which concerns on 4th Embodiment The figure which shows the shape of the stabilizer bush which concerns on 5th Embodiment The figure which shows the shape of the stabilizer bush which concerns on 6th Embodiment The figure which shows the shape of the stabilizer bush which concerns on 7th Embodiment The figure which shows the shape of the stabilizer bush which concerns on 8th Embodiment. The figure which shows the shape of the stabilizer bush which concerns on 9th Embodiment The figure which shows the shape of the stabilizer bush which concerns on 10th Embodiment The figure which shows the shape of the stabilizer bush which concerns on 11th Embodiment The figure which shows the shape of the stabilizer bush which concerns on 12th Embodiment

14 Stabilizer 15 Torsion section 18 Stabilizer bush 18a First outer peripheral surface (outer peripheral surface)
18b Second outer peripheral surface (outer peripheral surface)
18d Inner peripheral surface 18e Slit 18f Chamfered portion 18h Recessed portion 18i Recessed portion 18j Recessed portion 19 Body 19a Mounting portion 21 Mounting bracket (fixing member)
L axis S suspension device

Claims (6)

An inner peripheral surface (18d) of a cylindrical stabilizer bush (18) is fitted to an outer peripheral surface of a torsion portion (15) of a stabilizer (14) that connects the left and right suspension devices (S), and the stabilizer bush (18) In the stabilizer support structure, the outer peripheral surfaces (18a, 18b) of the vehicle body (19) are clamped and fixed between the mounting portion (19a) of the vehicle body (19) and the fixing member (21) fixed to the vehicle body (19).
A part of the curved portion (17) connected to the torsion portion (15) of the stabilizer (14) is fitted to one end portion in the axial line (L) direction of the inner peripheral surface (18d) of the stabilizer bush (18). And
The stabilizer bush (18) has a slit (18e) taken along the axis (L) to the inner peripheral surface (18 d) from an outer peripheral surface (18b) Rutotomoni, the slit (18e) is of the stabilizer (14) Arranged in a direction opposite to the bending direction of the bending portion (17) ,
Position where the slit (18e) intersects the inner peripheral surface (18d) only at a position sandwiching the slit (18e) at the opening end of at least one end of the inner peripheral surface (18d) of the stabilizer bush (18). support structure stabilizer, characterized in that formed gradually shallower as that chamfered portions respectively (18f) radially outward and circumferentially from opposite sides.   The stabilizer support structure according to claim 1, wherein the chamfered portion (18f) is a smooth concave curved surface formed symmetrically across the slit (18e).   The acute angle formed by the axis (L) of the stabilizer bush (18) and the chamfered portion (18f) is 45 ° to 75 °, The stabilizer according to claim 1 or 2, Support structure. The portion except at least the axis (L) direction end portion of the outer peripheral surface (18b) of the previous SL stabilizer bush (18), characterized in that a recess (18h) recessed radially claims 1 Item 4. The stabilizer support structure according to any one of Items 3 to 4 . The concave portion (18i, 18j) recessed in the axis (L) direction is formed at a position avoiding the vicinity of the slit (18e) on the side surface (18c) of the stabilizer bush (18). The support structure for the stabilizer according to any one of claims 4 to 5. The stabilizer support structure according to claim 5 , wherein the recess (18i, 18j) is formed so as to surround a periphery of the axis (L) while avoiding the vicinity of the slit (18e).

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