JP2007055538A - Suspension device supporting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a supporting structure of a suspension device consisting of a double axle suspension capable of enhancing the assembly/disassembly workability of a wheel bearing and a constant velocity joint. <P>SOLUTION: In the supporting structure of the suspension device, a wheel side knuckle 1 bearing the turn of a wheel and a vehicle body side knuckle 4 bearing the vertical movement are split into two, and the wheel side knuckle 1 rotatably supports the wheel via a wheel bearing 2, and is turnably connected to the vehicle body side knuckle 4 via upper and lower turning mechanisms 5, 6, the upper turning mechanism 5 comprises an upper pivot 21 separably coupled with a fixed shaft 20 coupled with the vehicle body side knuckle, and an upper supporting bearing 22 arranged between the upper pivot 21 and a cylindrical part 1b, the fixed shaft 20 is separably coupled therewith from the outside in the radial direction of the vehicle body side knuckle 4, and the upper supporting bearing 22 has a self-lifting structure fixed in the axial direction with respect to the upper pivot 21 in a pre-loaded condition. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a support structure for a suspension system of a vehicle such as an automobile, and more particularly to a support structure for a suspension system including a double axle suspension (hereinafter referred to as DAS).

  As a vehicle suspension device, as shown in FIG. 7, a knuckle 51 constituting the suspension device is divided into two parts: a vehicle body side knuckle 51 a that receives the vertical movement of the suspension device and a wheel side knuckle 51 b that receives the turning of the wheel 52. A structured DAS is known. The lower part of the vehicle body side knuckle 51 a formed in a bifurcated shape is rotatably connected to the outer end portion of the lower link 53. The lower link 53 extends inward in the vehicle width direction, and an inner end portion thereof is coupled to a vehicle body side member (not shown) such as a suspension member so as to be swingable in the vertical direction. A shock absorber 54 is disposed between the upper part of the vehicle body side knuckle 51a and the vehicle body, and a coil spring (not shown) is disposed substantially coaxially on the outer periphery of the shock absorber 54. . The wheel 52 is rotatably supported via a wheel bearing 55 with respect to the wheel side knuckle 51b.

  Here, as shown in FIG. 8, the upper part of the wheel side knuckle 51 b is rotatably supported by the vehicle body side knuckle 51 a via the upper rotation mechanism 56. The upper turning mechanism 56 includes an upper pivot 58 fastened to the vehicle body side knuckle 51a via a fixing bolt 57, and an upper support bearing 59 mounted between the upper pivot 58 and the wheel side knuckle 51b. . The upper support bearing 59 is composed of, for example, a double row tapered roller bearing, and is rotatable freely through an outer ring 60 fitted into the wheel side knuckle 51b and double row tapered rollers 61, 61 on the outer ring 60. A pair of inner rings 62 and 62 inserted therein is provided. The upper pivot 58 has a flange 58a at one end, and a pair of inner rings 62 is formed by the flange 58a and a lid member 63 interposed between the upper portion of the wheel side knuckle 51b and the vehicle body side knuckle 51a. , 62 are clamped in the axial direction.

  On the other hand, the lower part of the wheel side knuckle 51b is rotatably supported by the vehicle body side knuckle 51a via the lower rotation mechanism 64. The lower turning mechanism 64 includes a lower pivot 65 fastened to the vehicle body side knuckle 51a via a fixing bolt 57, and a lower support bearing 66 mounted between the lower pivot 65 and the wheel side knuckle 51b. . The lower support bearing 66 is a needle roller bearing. The above-described upper and lower turning mechanisms 56 and 64 constitute a so-called kingpin shaft 67. A wheel knuckle 51b is rotatable around the kingpin shaft 67.

Here, when the steering force is transmitted to the wheel-side knuckle 51b via a steering mechanism (not shown), the wheel-side knuckle 51b is rotated around the kingpin shaft 67 by the upper and lower rotation mechanisms 56 and 64. The wheel 52 supported by the side knuckle 51b is steered. The vehicle body weight is supported by the wheel via the shock absorber 54, the vehicle body side knuckle 51a, the upper turning mechanism 56, and the wheel side knuckle 51b. Further, the vertical movement of the wheel 52 caused by the vehicle passing through the unevenness on the road surface is attenuated by the expansion and contraction of the shock absorber 54, and the coil disposed coaxially with the shock absorber 54. Absorbed by spring deflection.
EP1319533A1 publication

  In such a conventional DAS, the wheel bearing 55 is fitted between the hub wheel 69 that supports the wheel 52 and the wheel side knuckle 51b. The constant velocity universal joint 70 transmits rotational torque from the engine to the hub wheel 69 via the drive shaft 71. When disassembling and assembling the wheel bearing 55 and the constant velocity universal joint 70, it is difficult to remove the wheel side knuckle 51b from the vehicle body side knuckle 51a in a state where the knuckle 51 is attached to the vehicle body. It becomes complicated. Further, when replacing the knuckle 51, it is necessary to remove the constant velocity universal joint 70, and workability is poor and improvement has been desired.

  The present invention has been made in view of such conventional problems, and provides a support structure for a suspension device made of DAS, which improves workability of disassembly and assembly of wheel bearings and constant velocity universal joints. Objective.

  In order to achieve the object, the invention according to claim 1 of the present invention comprises a two-part structure of a wheel-side knuckle that receives the turning of the wheel and a vehicle body-side knuckle that receives the vertical movement of the suspension device. A suspension device in which a side knuckle rotatably supports a wheel via a wheel bearing and is rotatably connected to the vehicle body side knuckle via an upper and lower rotation mechanism extending in the vehicle width direction. In this support structure, the upper rotating mechanism is detachably coupled to a fixed shaft coupled to the vehicle body side knuckle, and between the upper pivot and the cylindrical portion of the wheel side knuckle. And an upper support bearing disposed on the vehicle body, and the fixed shaft is coupled to be separable from the outside in the radial direction of the vehicle body side knuckle.

  Thus, it has a two-part structure of the wheel side knuckle that receives the turning of the wheel and the vehicle body side knuckle that receives the vertical movement of the suspension device, and the wheel side knuckle supports the wheel rotatably via the wheel bearing. In addition, in the support structure of the suspension device that is rotatably connected to the vehicle body side knuckle extending in the vehicle width direction via the upper and lower rotation mechanisms, the upper rotation mechanism is coupled to the vehicle body side knuckle. An upper pivot coupled to the fixed shaft in a separable manner; and an upper support bearing disposed between the upper pivot and the cylindrical portion of the wheel side knuckle, wherein the fixed shaft has a diameter of the vehicle body side knuckle. Since it is connected so as to be separable from the outside of the direction, it is possible to remove the fixed shaft without removing the constant velocity universal joint as in the past, and only by removing both fixed shafts attached to the knuckle on the vehicle body side, Body side nut It is possible to remove the wheel knuckle Le, improved disassembling and assembling work of the wheel bearing and a constant velocity universal joint.

  Preferably, as in the invention described in claim 2, the upper support bearing is fitted into the cylindrical portion of the wheel-side knuckle, and an outer ring having a double row outer raceway formed on the inner periphery, The outer support comprises at least one inner ring that is inserted into the outer ring via a double-row rolling element and has an inner rolling surface that faces the outer rolling surface of the double-row on the outer periphery. If the self-retained structure is fixed in the axial direction with respect to the upper pivot in a state where a predetermined preload is applied, the initially set preload can be maintained regardless of the attachment / detachment of the fixed shaft. In addition, preload management at the time of assembling into the vehicle is not required, and assembling workability can be simplified.

  According to a third aspect of the present invention, the upper pivot is formed in a cylindrical shape, has a flange at one end, a male screw is formed at the other end, and a nut fastened to the male screw. And the upper support bearing may be fixed in the axial direction in a state of being sandwiched between the flange portion and the flange portion.

  Further, as in the invention according to claim 4, the upper pivot includes a cylindrical inner ring member having a small-diameter step portion formed on the outer periphery thereof, and an inner ring press-fitted into the small-diameter step portion of the inner ring member, The inner ring may be fixed in the axial direction by a caulking portion formed by plastically deforming an end portion of the small-diameter stepped portion radially outward. Thereby, the number of parts of an upper rotation mechanism can be reduced and compactization can be achieved.

  Preferably, as in the invention described in claim 5, if one inner rolling surface is directly formed on the outer periphery of the inner ring member, the number of parts of the upper rotating mechanism can be reduced, and the size can be reduced. The rigidity of the upper support bearing can be increased.

  The support structure of the suspension device according to the present invention has a two-part structure of a wheel side knuckle that receives the turning of the wheel and a vehicle body side knuckle that receives the vertical movement of the suspension device, and the wheel side knuckle is interposed via a wheel bearing. In the support structure of the suspension device rotatably supported by the vehicle body side knuckle extending in the vehicle width direction through the upper and lower rotating mechanisms. An upper pivot that is separably coupled to a fixed shaft that is coupled to the vehicle body side knuckle; and an upper support bearing that is disposed between the upper pivot and the tubular portion of the wheel side knuckle. And the fixed shaft is detachably coupled from the radially outer side of the vehicle body side knuckle, so that the fixed shaft can be removed without removing the constant velocity universal joint as in the prior art. On the knuckle Simply by removing the two fixed shaft that is deposited, it is possible to remove the wheel knuckle from the vehicle body side knuckle, thereby improving decomposition and assembly of the wheel bearing and a constant velocity universal joint.

  It consists of a two-part structure of a wheel side knuckle that receives the turning of the wheel and a vehicle body side knuckle that receives the vertical movement of the suspension system, and the wheel side knuckle rotatably supports the wheel via the wheel bearing, In the support structure of the suspension device that is rotatably connected to the vehicle body side knuckle extending in the vehicle width direction via the upper and lower rotation mechanisms, the upper rotation mechanism is coupled to the vehicle body side knuckle. An upper pivot coupled to the fixed shaft in a separable manner; and an upper support bearing disposed between the upper pivot and the cylindrical portion of the wheel side knuckle, wherein the fixed shaft is the vehicle body side knuckle. The upper support bearing has a self-retain structure in which the upper support bearing is fixed in the axial direction with respect to the upper pivot with a predetermined preload applied thereto.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing a support structure for a suspension device according to the present invention, and FIG. 2 is an enlarged view of a main part of FIG.
The support structure of the suspension device constitutes a DAS having a two-part structure of a wheel side knuckle 1 that receives turning of a wheel (not shown) and a vehicle body side knuckle 4 that receives vertical movement of the suspension device. The wheel side knuckle 1 supports the wheel rotatably via the wheel bearing 2 and extends substantially in the vehicle width direction to the vehicle body side knuckle 4 positioned on the radially outer side of the wheel side knuckle 1. The upper and lower rotating mechanisms 5 and 6 are connected so as to be rotatable.

  The hub wheel 3 integrally has a wheel mounting flange 7 for mounting a wheel at one end portion, and a cylindrical small-diameter step portion 3 a extending in the axial direction from the wheel mounting flange 7 is formed. The wheel bearing 2 is fitted between the small-diameter step portion 3a of the hub wheel 3 and the wheel-side knuckle 1, and rotatably supports the wheel. The wheel bearing 2 is inserted into the outer ring 8 through a double row of rolling elements (balls) 9 and 9 and is inserted into the wheel side knuckle 1. It consists of a double row angular contact ball bearing provided with a pair of inner rings 10 and 10 fitted on 3a.

  The constant velocity universal joint 11 includes an outer joint member 12 connected to the hub wheel 3. The outer joint member 12 integrally has a stem portion 14 formed so as to protrude in the axial direction from the shoulder portion 13, and a curved track groove 12 a extending in the axial direction is formed on the inner periphery to form a fixed type constant velocity. The universal joint 11 is comprised. Then, the stem portion 14 is fitted to the hub wheel 3 via the serration 14a, and is connected to the hub nut 3 so as to be separable in the axial direction by a fixing nut 15 fastened to the tip of the stem portion 14, and rotational torque from the drive shaft 16 Is transmitted to the hub wheel 3.

  The lower rotating mechanism 6 is mounted between a lower pivot 18 fastened to the vehicle body side knuckle 4 via a fixing bolt (fixed shaft) 17, and the lower pivot 18 and the tubular portion 1 a of the wheel side knuckle 1. And a lower support bearing 19. The lower support bearing 19 is a needle roller bearing.

  Here, as shown in FIG. 2 in an enlarged manner, the upper turning mechanism 5 includes an upper pivot 21 fastened to the vehicle body side knuckle 4 via a fixing bolt (fixed shaft) 20, and the upper pivot 21 and the wheel side. And an upper support bearing 22 mounted between the knuckle 1 and the cylindrical portion 1b. The upper turning mechanism 5 and the lower turning mechanism 6 constitute a kingpin shaft 23. The kingpin shaft 23 is configured to be inclined at a predetermined angle with respect to the wheel center W / C, and the wheel-side knuckle 1 can be rotated around the kingpin shaft 23.

  The upper support bearing 22 is rotatably inserted into the outer ring 24 through a double row rolling element (conical rollers) 25 and 25, and the outer ring 24 is fitted into the cylindrical portion 1b of the wheel knuckle 1. It consists of a double row tapered roller bearing provided with a pair of inner rings 26 and 26. Tapered double-row outer rolling surfaces 24a, 24a are formed on the inner periphery of the outer ring 24, and a tapered inner rolling surface 26a facing the outer-rolling surfaces 24a, 24a of the double row is formed on the inner ring. 26 is formed on the outer periphery of each. In addition, a large flange 26b through which the rolling elements 25 are guided is integrally formed at the large-diameter side end of the inner ring 26.

  The upper pivot 21 is formed in a cylindrical shape, has a flange portion 21a at one end portion, and has a male screw 21b at the other end portion. Further, a female screw 21c is formed on the inner periphery, and a fixing bolt 20 is fastened to the female screw 21c, and the upper pivot 21 is detachably coupled to the vehicle body side knuckle 4. The upper support bearing 22 is sandwiched between the flange 21a of the upper pivot 21 and the cap nut 27 fastened to the male screw 21b, and is fixed in the axial direction in a state where a predetermined preload is applied. As a result, the upper support bearing 22 has a so-called self-retained structure by the upper pivot 21 and the cap nut 27, and can maintain the initially set preload irrespective of the attachment / detachment of the fixing bolt 20, and the assembly to the vehicle. Preload management at the time becomes unnecessary, and the workability of assembly can be simplified. The cap nut 27 is provided with a star washer 28 for preventing looseness. Further, a recess 27a is formed on the outer periphery of the cap nut 27. By locking the pin 29 in the recess 27a, the cap nut 27 is prevented from rotating together when the fixing bolt 20 is detached from the upper pivot 21. is doing.

  In the present embodiment, the upper support bearing 22 has a self-retained structure in which the upper pivot 21 is fixed in the axial direction with a predetermined preload applied thereto. The fixing bolt 20 can be removed without being removed, and the wheel-side knuckle 1 can be removed from the vehicle-side knuckle 4 by simply removing both the fixing bolts 17 and 20 attached to the vehicle-side knuckle 4. The disassembly / assembly work of the bearing 2 and the constant velocity universal joint 11 is improved.

  FIG. 3 is an enlarged view of a main part showing a second embodiment of the suspension support structure according to the present invention. In addition, the same code | symbol is attached | subjected to the component same site | part or the same function as embodiment mentioned above, and detailed description is abbreviate | omitted.

  The upper turning mechanism 30 includes an upper pivot 33 fixed to the vehicle body knuckle 31 via a fixing pin 32, and an upper support mounted between the upper pivot 33 and the tubular portion 1b of the wheel knuckle 1. And a bearing 22. The fixing pin 32 is formed with a male screw 32 a on the outer periphery of one end portion thereof, and is detachably fastened to the vehicle body side knuckle 31, and the tip portion is press-fitted and fixed to the upper pivot 33. A locking hole 32b is formed at the end of the fixing pin 32, and a fixing jig (not shown) such as a wrench is locked in the locking hole 32b and rotated to be fixed to the upper pivot 33. The pin 32 can be removed.

  The upper pivot 33 is formed in a cylindrical shape, has a flange 21a at one end, and a male screw 21b at the other end. The upper support bearing 22 is sandwiched between the flange portion 21a of the upper pivot 33 and the cap nut 27 fastened to the male screw 21b, and is fixed in the axial direction with a predetermined preload applied thereto. As a result, the upper support bearing 22 has a self-retained structure by the upper pivot 33 and the cap nut 27, and can maintain the preload set in the initial stage irrespective of the attachment / detachment of the fixing pin 32, and the workability of the assembly is simplified. Can be Therefore, in this embodiment, the fixing pin 32 can be extracted without removing the constant velocity universal joint (not shown) inserted in the vehicle body side knuckle 31, as in the above-described embodiment, and the vehicle body side knuckle 31 can be removed. The wheel side knuckle 1 can be easily separated.

  FIG. 4 is an essential part enlarged view showing a third embodiment of the support structure for a suspension device according to the present invention. This third embodiment is a modification of the above-described second embodiment (FIG. 3), and the same components and parts having the same functions as those of the second embodiment are denoted by the same reference numerals and detailed. The detailed explanation is omitted.

  The upper rotating mechanism 34 is provided with an upper pivot 37 fixed to the vehicle body side knuckle 35 via a fixing pin 36, and an upper support mounted between the upper pivot 37 and the tubular portion 1b of the wheel side knuckle 1. And a bearing 22. The fixing pin 36 has a female screw 36 a at one end, and is press-fitted and fixed to the vehicle body side knuckle 35 and the upper pivot 37 so as to be separable. The fixing pin 36 can be attached to and detached from the upper pivot 37 by screwing a fixing jig (not shown) such as a bolt (not shown) into the female screw 36 a of the fixing pin 36. Reference numeral 38 denotes a lid member that prevents the fixing pin 36 from coming out, and is fixed to the vehicle body side knuckle 35 via a fixing screw 39.

  The upper pivot 37 is formed in a cylindrical shape, has a flange portion 21a at one end portion, and has a male screw 21b at the other end portion. The upper support bearing 22 is fixed in the axial direction with a preload applied by the upper pivot shaft 37 and the cap nut 27, and has a self-retaining structure. Therefore, regardless of whether the fixing pin 36 is attached or detached, the initially set preload can be maintained, and the assembly workability can be simplified. Therefore, in the present embodiment, the fixing pin 36 can be extracted without removing the constant velocity universal joint (not shown) inserted into the vehicle body side knuckle 35, as in the above-described embodiment, and the vehicle body side knuckle 35 can be removed. The wheel side knuckle 1 can be easily separated.

  FIG. 5 is an essential part enlarged view showing a fourth embodiment of a support structure for a suspension device according to the present invention. This embodiment basically differs from the first embodiment described above (FIG. 2) only in the configuration of the upper pivot, and other parts having the same parts or functions have the same reference numerals. Detailed description is omitted.

  The upper turning mechanism 40 includes an upper pivot 41 fixed to the vehicle body side knuckle 4 via the fixing bolt 20, and an upper support mounted between the upper pivot 41 and the cylindrical portion 1 b of the wheel side knuckle 1. And a bearing 42.

  The upper support bearing 42 includes an outer ring 24 fitted into the cylindrical portion 1b of the wheel-side knuckle 1, and an upper pivot 41 rotatably inserted into the outer ring 24 via double-row rolling elements 25, 25. It consists of a double row tapered roller bearing provided with. Here, the upper pivot 41 includes a cylindrical inner ring member 43 and an inner ring 26 press-fitted into the inner ring member 43. The inner ring member 43 has a large collar 26b that guides the rolling element 25 at one end, and an inner rolling surface 26a and a cylindrical small-diameter stepped portion 43a extending in the axial direction from the inner rolling surface 26a are formed on the outer periphery. Has been. The inner ring 26 is press-fitted into the small-diameter step portion 43a, and the inner ring 26 is fixed in the axial direction by a crimping portion 43b formed by plastically deforming an end portion of the small-diameter step portion 43a radially outward.

  A female screw 43c is formed on the inner periphery of the inner ring member 43. The fixing bolt 20 is fastened to the female screw 43c, and the upper pivot 41 is detachably coupled to the vehicle body side knuckle 4. Reference numeral 44 denotes a reinforcing spacer that is engaged with the large-diameter end of the inner ring member 43 and supports a load applied to the inner ring member 43. As described above, in the present embodiment, the upper support bearing 42 has a self-retaining structure in which the inner ring 26 is fixed in the axial direction by the caulking portion 43b, and maintains the initially set preload regardless of whether the fixing bolt 20 is attached or detached. In addition, preload management at the time of assembling to the vehicle is not necessary, and assembling workability can be simplified. Further, as in the prior art, the fixing bolt 20 can be removed without removing the constant velocity universal joint (not shown), the number of parts of the upper rotating mechanism 40 can be reduced, and the size can be reduced. The rigidity of 42 can be increased. A recess 27a is formed on the outer periphery of the inner ring 26. By locking the pin 29 in the recess 27a, the inner ring 26, that is, the upper pivot 41 rotates together when the fixing bolt 20 is attached to and detached from the inner ring member 43. Is preventing.

  FIG. 6 is an essential part enlarged view showing a fifth embodiment of a support structure for a suspension device according to the present invention. This embodiment is a modification of the above-described fourth embodiment (FIG. 5). Basically, the structure for fixing the upper pivot is different, and other parts having the same parts or the same functions are used. The same reference numerals are assigned and detailed description is omitted.

  The upper turning mechanism 45 includes an upper pivot 48 fixed to the vehicle body knuckle 46 via a fixing member 47, and an upper portion disposed between the upper pivot 48 and the cylindrical portion 1b of the wheel knuckle 1. And a support bearing 49.

  The upper support bearing 49 includes an outer ring 24 fitted into the cylindrical portion 1b of the wheel-side knuckle 1, and an upper pivot shaft 48 rotatably inserted into the outer ring 24 via double-row rolling elements 25, 25. It consists of a double row tapered roller bearing provided with. Here, the upper pivot 48 includes a cylindrical inner ring member 43 ′ and the inner ring 26 press-fitted into the inner ring member 43 ′. The inner ring member 43 ′ has a large collar 26 b that guides the rolling element 25 at one end, an inner rolling surface 26 a on the outer periphery, and a cylindrical small-diameter stepped portion 43 a that extends in the axial direction from the inner rolling surface 26 a. Is formed. The inner ring 26 is press-fitted into the small-diameter step portion 43a, and the inner ring 26 is fixed in the axial direction by a crimping portion 43b formed by plastically deforming an end portion of the small-diameter step portion 43a radially outward.

  An annular recess 43d is formed at the large-diameter side end of the inner ring member 43 ′, and a cylindrical fixing member 47 is engaged with the recess 43d, and the upper pivot 48 is connected to the vehicle body via the retaining ring 50. The side knuckle 46 is detachably coupled. Thus, the upper support bearing 49 has a self-retaining structure by the crimping portion 43b of the inner ring member 43 ′, and can maintain the preload set in the initial stage regardless of the attachment / detachment of the fixing member 47, and the workability of assembly. Can be further simplified.

  The embodiment of the present invention has been described above, but the present invention is not limited to such an embodiment, and is merely an example, and various modifications can be made without departing from the scope of the present invention. Of course, the scope of the present invention is indicated by the description of the scope of claims, and further, the equivalent meanings described in the scope of claims and all modifications within the scope of the scope of the present invention are included. Including.

  The support structure for a suspension device according to the present invention is applied to a DAS in which a knuckle constituting the suspension device has a two-part structure of a vehicle body side knuckle that receives the vertical movement of the suspension device and a wheel side knuckle that receives the turning of the wheel. it can.

It is a longitudinal section showing a 1st embodiment of a support structure of a suspension system concerning the present invention. It is a principal part enlarged view of FIG. It is a principal part enlarged view which shows 2nd Embodiment of the support structure of the suspension apparatus which concerns on this invention. It is a principal part enlarged view which shows 3rd Embodiment of the support structure of the suspension apparatus which concerns on this invention. It is a principal part enlarged view which shows 4th Embodiment of the support structure of the suspension apparatus which concerns on this invention. It is a principal part enlarged view which shows 5th Embodiment of the support structure of the suspension apparatus which concerns on this invention. It is a schematic diagram which shows the conventional suspension apparatus. It is a longitudinal cross-sectional view which shows the support structure of the suspension apparatus of FIG.

Explanation of symbols

1 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Wheel side knuckle 1a, 1b ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Cylindrical part 2 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・・ ・ ・ ・ ・ Wheel bearing 3 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Hub wheels 3a, 43a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Small diameter steps 4, 31, 35, 46... Knuckle 5, 30, 34, 40, 45 on the vehicle body side ... upper turning mechanism 6 ... lower turning mechanism 7・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Wheel mounting flange 8, 24 ・ ・ ・ ・ ・ ・ ・ ・ Outer ring 9, 25 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・.... Rolling elements 10, 26 .... Inner ring 11 .... Constant velocity universal joint 12 ...・ ・ ・ ・ ・ ・ Outer joint member 12a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Track groove 13 ・ ・ ・・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Shoulder 14 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Stem 14a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Serrations 14b and 21b 32a ··· Male screw 15 ··· Fixing nut 16 · · · Drive shaft 17, 20 · · · ········································································································ Lower support bearing 21 , 33, 37, 41, 48 ... upper pivot shaft 21a ......... collar 21c, 36a, 43c ... female screw 22, 42, 49 ... ······· Upper support bearing 23 ·························································· ...・ ・ Inner rolling surface 26b ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Large collar 27 ・ ・ ・ ・ ・ ・ ・ ・ Cap nut 27a ・ ・ ・ ・ ・ ・ ・ ・························· 28 ········· Fixing pin 32b ···································································・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Fixing screw 43, 43 ′ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Inner ring member 43b ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Clamping part 43d ・... Recess 44 ... Reinforcement spacer 47 ... Fixing member 50 ... Retaining ring 51 ... Knuckle 1a ···························································· Wheel knuckles 52 ..Wheel 53 ... Lower link 54 ... Shock absorber 55 ...・ ・ ・ ・ ・ Wheel bearing 56 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Upper turning mechanism 57 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Fixing bolt 58 ・ ・ ・··················· Upper pivot 58a 60 ... outer ring 61 ... tapered roller 62 ...・ Inner ring 63 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Lid member 64 ・ ・ ・ ・ ・ ・.... Lower turning mechanism 65 ... Lower pivot 66 ... Lower support bearing 67 .... Kingpin shaft 69 ... Hub wheel 70 ... Constant Velocity Universal Joint 71 ... Drive Shaft W / C ... Center of Wheel

Claims (5)

It consists of a two-part structure of the wheel side knuckle that receives the turning of the wheel and the vehicle body side knuckle that receives the vertical movement of the suspension system,
The wheel side knuckle rotatably supports the wheel via a wheel bearing, and is rotatably connected to the vehicle body side knuckle extending substantially in the vehicle width direction via upper and lower turning mechanisms. In the suspension support structure,
The upper rotation mechanism is disposed between an upper pivot that is separably coupled to a fixed shaft that is coupled to the vehicle body side knuckle, and the upper pivot and the cylindrical portion of the wheel side knuckle. A suspension support structure, comprising: an upper support bearing, wherein the fixed shaft is detachably coupled from a radially outer side of the vehicle body side knuckle.   The upper support bearing is inserted into the cylindrical portion of the wheel-side knuckle, and an outer ring having a double-row outer rolling surface formed on the inner periphery, and is inserted into the outer ring via a double-row rolling element. An inner race formed with an inner race surface facing the outer race surface of the double row on the outer periphery, and the upper support bearing is applied to the upper pivot with a predetermined preload applied thereto. The suspension support structure according to claim 1, wherein the support structure is a self-retained structure fixed in the axial direction.   The upper pivot is formed in a cylindrical shape, has a flange at one end, a male thread is formed at the other end, and is sandwiched between a nut fastened to the male thread and the flange. The suspension support structure according to claim 1 or 2, wherein the support bearing is fixed in the axial direction.   The upper pivot includes a cylindrical inner ring member having a small-diameter step formed on the outer periphery and an inner ring press-fitted into the small-diameter step of the inner ring member, and the inner ring has a diameter at the end of the small-diameter step. The support structure for a suspension apparatus according to claim 1 or 2, wherein the support structure is fixed in the axial direction by a caulking portion formed by plastic deformation outward in the direction.   The support structure for a suspension device according to claim 4, wherein one inner rolling surface is directly formed on the outer periphery of the inner ring member.

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