JP2011020589A - Vehicular suspension device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular suspension device in which the number of parts constituting a connection device is relatively small and steps for assembling the parts are also relatively small. <P>SOLUTION: The connection device 12 is constituted so as to include: an upper fitting 82 mounted to a vehicle body; a bearing 70 for connecting a chamber shell 39 to the upper fitting 82 while allowing the rotation of the chamber shell relative to the vehicle body; a rubber bushing 48 for allowing the relative displacement of a rod retaining cylinder 32 and a rod 41 of a shock absorber by elastic deformation; a stopper 55 outwardly projected toward an inner peripheral part of the rod retaining cylinder; and a press plate 68 having an outer edge 76 outwardly projected to an outer side than an outer periphery of the rod retaining cylinder and an inner edge 74 outwardly projected to an inner side than an inner periphery of the rod retaining cylinder. Thereby, the vehicular suspension device can be provided in which the number of parts constituting the connection device is relatively small and the steps for assembling the parts are also relatively small. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicle suspension apparatus.

  2. Description of the Related Art Conventionally, as an automotive suspension device, an air suspension device having an air spring that generates a spring force with respect to a relative movement due to the approach and separation between a wheel and a vehicle body by an air pressure in an air chamber defined by a chamber shell is known. It has been. Also, many air suspension devices are provided with a shock absorber that generates a force that suppresses the relative movement, that is, a damping force. The shock absorber typically includes a cylindrical cylinder connected to a wheel side member and a rod extending from the cylinder and connected to a vehicle body side member. Since the reaction force of the damping force acts on the rod, the air suspension device is provided with a coupling device having an elastic body for buffering the reaction force on the vehicle body side. And is connected to the vehicle body side member. Further, the coupling device includes a mechanism for limiting the deformation amount of the elastic body in order to prevent the elastic body from being greatly deformed and losing its durability, and further, the chamber shell is attached to the vehicle body side member. A mechanism for coupling is also provided. Patent Document 1 below also describes an air suspension device including such a coupling device.

JP 2008-143474 A

  Since the structure of the connecting device in the vehicle suspension apparatus as described above is generally complicated, it requires a relatively large number of components and a relatively large number of steps for assembling it. The In view of such circumstances, it is an object of the present invention to provide a vehicle suspension apparatus that has a relatively small number of parts that constitute a coupling device and that has relatively few steps for assembling those parts. .

  In order to solve the above problems, a vehicle suspension apparatus according to the present invention includes a cylinder disposed between a vehicle body and a wheel, coupled to a wheel holding member, and a rod extending from the cylinder. A shock absorber that generates a damping force for the relative motion of the vehicle and the wheel, and an air spring that has a chamber shell that divides the periphery of the shock absorber as an air chamber and that suspends the vehicle body depending on the air pressure in the air chamber; A suspension device for a vehicle comprising a shock absorber rod and a connecting device for connecting the upper end portion of the chamber shell to the mount portion of the vehicle body, wherein the connecting device is fixedly attached to the mount portion; The cylinder shell is generally cylindrical and the upper end of the shock absorber rod is housed inside. A rod holding cylinder fixed to the end, generally annular, (a) an outer peripheral part fixed to the mounting member, and (b) a bearing formed as a stepped surface facing upward at the outer peripheral part of the rod holding cylinder The lower end is supported and supported by the surface, and includes an inner peripheral portion fitted to the outer peripheral portion of the rod holding cylinder, and (c) a mechanism that allows relative rotation between the outer peripheral portion and the inner peripheral portion, A connecting ring for connecting the upper end of the chamber shell to the mounting member via the rod holding cylinder while allowing the rotation of the chamber shell relative to the vehicle body, and a generally cylindrical shape, and an outer peripheral portion on the inner peripheral surface of the rod holding cylinder Is fixed to the outer peripheral surface of the upper end of the shock absorber rod, and the rod holding cylinder is allowed to move relative to the rod holding cylinder and the shock absorber rod in the axial direction by its own elastic deformation. Shock absolute A rubber bush arranged inside the rod holding cylinder to hold the upper end of the bar, and fixed to the upper end of the rod of the shock absorber at a position above the rubber bush, and toward the inner periphery of the rod holding cylinder It is fixed to the upper end of the rod holding cylinder so that it has a generally annular shape and the outer edge protrudes outside the outer circumference of the rod holding cylinder and the inner edge protrudes inside the inner circumference of the rod holding cylinder. The outer edge sandwiches the inner peripheral part of the connecting ring with the bearing surface of the rod holding cylinder, and the inner edge is fixed to the upper end part of the rod of the shock absorber. And a presser plate adapted to limit the range of relative displacement of the rod of the shock absorber.

  According to the vehicle suspension device of the present invention, the inner peripheral portion of the connecting ring can be sandwiched between the rod holding cylinder that accommodates the upper end portion of the rod and the press plate that limits the range of relative displacement of the rod, It is not necessary to provide a member necessary only for fixing the inner peripheral portion of the connecting ring, and a process for fixing the member is not required. Therefore, it is possible to provide a vehicle suspension apparatus that has a relatively small number of parts constituting the coupling device and a relatively small number of steps for assembling those parts.

It is a top view of the suspension device for vehicles of an example. It is sectional drawing of the suspension apparatus for vehicles of an Example. It is sectional drawing which shows the connection apparatus of the suspension apparatus for vehicles of an Example. It is sectional drawing which shows the connection apparatus of the conventional vehicle suspension apparatus. It is sectional drawing of another connection apparatus of the suspension apparatus for vehicles of an Example. It is sectional drawing of the connection apparatus using another connection ring of the suspension apparatus for vehicles of an Example.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as modes for carrying out the present invention. In addition, this invention is not limited to the following Example, This invention can be implemented with the various form to which the various change and improvement were performed based on the knowledge of those skilled in the art.

  FIG. 1 is a plan view of a vehicle suspension device 10 of this embodiment used in a vehicle, FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1, and FIG. 3 is a diagram of a connecting device 12 provided in the vehicle suspension device 10. The vehicle suspension apparatus 10 of the present embodiment will be described below with reference to these drawings. The vehicle suspension device 10 is provided in a vehicle so as to connect a wheel side member connected to a wheel and a vehicle body side member attached to the vehicle body. It can be expanded and contracted in the axial direction. In general, the vehicle suspension apparatus 10 includes an air spring 14 that generates a spring force for an approaching and separating operation between a wheel and a vehicle body, a shock absorber 16 that generates a damping force for the approaching and separating operation, and a damping force thereof. And a coupling device 12 for buffering the action of the reaction force on the vehicle body side.

  The air spring 14 includes a cylindrical upper shell 20, a cylindrical piston cylinder 22 provided so as to be able to enter and exit the upper shell 20 in the axial direction of the upper shell 20, and the upper shell 20 A diaphragm 24 connecting the piston cylinder 22 is included. The diaphragm 24 is formed in a cylindrical shape and has flexibility, one end of which is in close contact with the upper shell 20, and the other end covers the upper end of the piston cylinder 22. The piston cylinder 22 is in close contact. Therefore, even when the piston cylinder 22 enters and exits the inside of the upper shell 20, the diaphragm 24 can be deformed according to the entry and exit in a state of being in close contact with the upper shell 20 and the piston cylinder 22. Yes. A cylinder 26 that is a component of the shock absorber 16 is disposed inside the piston cylinder 22 so as to penetrate the lower end portion of the piston cylinder 22. The lower end portion of the piston cylinder 22 and the cylinder 26 are joined so that there is no gap.

  An annular shell cap 30 having a hole 28 in the center is fixed to the upper end of the upper shell 20. A rod holding cylinder 32 that forms a casing of the coupling device 16 is fixed to the shell cap 30. The rod holding cylinder 32 is generally cylindrical, and has an upper portion 34 with a larger inner diameter and a lower portion 36 with a smaller inner diameter. A flange 38 having a stepped surface facing downward is formed. The rod holding cylinder 32 is disposed such that a lower portion 36 of the rod holding tube 32 is fitted in the hole 28 and a stepped surface facing the lower portion of the flange portion 38 is in close contact with the upper surface of the shell cap 30. Further, a welding process of welding the outer peripheral part of the flange part 38 and the upper surface of the shell cap 30 is performed, and the rod holding cylinder 32 is fixed to the shell cap 30 by this welding process. In the vehicle suspension apparatus 10 configured as described above, a chamber shell 39 that partitions the space around the shock absorber 16 as an air chamber 40 is formed by the upper shell 20, the piston cylinder 22, the diaphragm 24, and the shell cap 30. .

  When the vehicle suspension device 10 is contracted, that is, in a direction in which the wheel and the vehicle body bounce, the piston cylinder 22 and the cylinder 26 and the upper shell 20 come close to each other and the volume in the chamber shell 39 is reduced. The air pressure in the chamber 40 increases. On the other hand, when the vehicle suspension apparatus 10 extends, that is, when the wheel and the vehicle body relatively move in the rebound direction, the piston cylinder 22 and the cylinder 26 and the upper shell 20 are separated from each other, and the volume in the chamber shell 39 increases. The air pressure in the air chamber 40 decreases. Therefore, the air pressure in the air chamber 40 fluctuates due to the expansion / contraction operation of the vehicle suspension device 10, and a spring force corresponding to the difference between the air pressure in the air chamber 40 and the external air pressure is generated. That is, in the vehicle suspension apparatus 10, the air spring 14 can suspend the vehicle body depending on the air pressure in the air chamber 40.

  The shock absorber 16 is disposed so that its central axis coincides with the central axis of the chamber shell 39 and penetrates the chamber shell 39. The shock absorber 16 includes a cylindrical cylinder 26 and a rod 41 that can move in the axial direction within the cylinder 26. The rod 41 extends upward from the inside of the cylinder 26 and is connected to the vehicle body side member via the connecting device 16 as described later. The upper end of the rod 41 is connected to an actuator (not shown) located above the vehicle suspension apparatus 10. A mounting bush 42 is fixed to the lower end portion of the cylinder 26, and the cylinder 26 is connected to a wheel holding member that rotatably holds the wheel via the mounting bush 42.

  A free piston 43 is installed below the inside of the cylinder 26 so as to be movable in the axial direction of the cylinder 26 via a seal member. The free piston 43 divides the inside of the cylinder 26 into two upper and lower spaces. The space below the free piston 43 is an air chamber filled with air, and the space above the free piston 43 is an oil chamber filled with oil. The oil chamber is further divided into two upper and lower spaces by a piston 44 fixed to the lower end of the rod 41. Although detailed explanation is omitted, the piston 44 is provided with a hole connecting the spaces, and the oil filled in the cylinder 26 can travel between the two spaces through the hole. Has been. As a result, the shock absorber 16 is configured to generate a damping force based on the resistance in passage of oil when the oil passes through the hole of the piston 44 by the relative movement of the cylinder 26 and the rod 41. Incidentally, when the rod 41 enters or leaves the oil chamber by the relative movement of the cylinder 26 and the rod 41, the free piston 43 compresses or expands the air in the air chamber and moves in the axial direction of the expansion cylinder 26 by the oil. Be made. Further, the shock absorber 16 is configured so that the damping force can be adjusted by the operation of an actuator connected to the upper end portion of the rod 41.

  A rubber bound stopper 45 is attached to the bottom surface of the rod holding cylinder 32. The bound stopper 45 can limit the relative movement amount of the cylinder 26 and the rod 41 by bringing the upper end portion of the cylinder 26 into contact with itself in the relative movement of the cylinder 26 and the rod 41 in the bound direction. Has been. Incidentally, the bottom surface of the rod holding cylinder 32 and the bound stopper 45 are provided with holes having a diameter larger than the diameter of the rod 41, and the rod 41 itself does not contact the bottom surface of the rod holding cylinder 32 and the bound stopper 45. It is possible to move in the axial direction.

  The diameter of the upper portion of the rod 41, more specifically, the diameter of the portion of the rod 41 located above the rod holding cylinder 32 is made smaller than the diameter of the other portions, A stepped surface facing upward is formed. The rod 41 is fitted with a collar 46 which is cylindrical and has a lower inner diameter than the upper portion and has a stepped surface facing downward at the boundary between these portions. That is, the collar 46 is fitted into the rod 41 with its step surface facing the step surface of the rod 41.

  A rubber bush 48 is disposed above the collar 46. The rubber bush 48 has a cylindrical shape, and includes an inner cylinder 50 that forms an inner periphery, an outer cylinder 52 that forms an outer periphery, and a rubber elastic body 54 that connects them. ing. The inner cylinder 50 is fitted into the rod 41, while the outer cylinder 52 is fixed to the inner peripheral surface of the rod holding cylinder 32 by being press-fitted into the lower portion 36 of the rod holding cylinder 32. As described above, the rod 41 is connected to the rod holding cylinder 32 while being held by the rubber bush 48. Accordingly, the rod 41 and the rod holding cylinder 32 are allowed to be relatively displaced in the axial direction due to the deformation of the elastic body 54. Incidentally, since the communication between the air chamber 40 and the outside is blocked by the rubber bush 48, the air in the air chamber 40 does not leak to the outside through the inside of the rod holding cylinder 32.

  An annular stopper 55 is fitted into the rod 41 above the rubber bush 48 and inside the upper portion 34 of the rod holding cylinder 32, and the stopper 55 protrudes toward the inner peripheral portion of the upper portion 34. Department. A cylindrical collar 56 is fitted on the rod 41 above the stopper 55, and a nut 58 is tightened on a thread portion formed on the rod 41 above the collar 56. Therefore, the collar 46, the inner cylinder 50, the stopper 55, and the collar 56 are fixed to the outer peripheral surface of the rod 41 by being pressed by the nut 58. A bracket 60 of an actuator (not shown) is fitted to the rod 41 above the nut 58, and the bracket 60 is fixed to the rod 41 by fastening another nut 62 to the threaded portion of the rod 41. ing.

  The upper portion 34 of the rod holding cylinder 32 will be described. The upper portion 34 has a caulking portion 64 whose height in the axial direction is increased and a press plate 68 which is lower in height and which will be described later. It is comprised by the support part 66. FIG. The caulking portions 64 and the support portions 66 are alternately arranged at three locations at equal pitches in the circumferential direction. Further, an inner race 72 of a bearing 70 for allowing the chamber shell 39 to rotate with respect to the vehicle body is fitted on the outer peripheral portion of the rod holding cylinder 32, and an inner surface is formed on the step surface facing upward of the flange portion 38. The lower end of the race 72 is supported and received.

  The presser plate 68 is an annular plate, and a hole for passing the rod 41 and the collar 56 fitted thereto is provided at the center thereof. The pressing plate 68 includes an inner edge portion 74 whose outer periphery protrudes inside the inner periphery of the rod holding tube 32 and an outer edge portion 76 whose outer periphery protrudes outside the outer periphery of the rod holding tube 32. The outer edge portion 76 is formed at three locations at equal pitches in the circumferential direction so as to extend outward from the inner edge portion 74.

  In the rod holding cylinder 32 and the presser plate 68 configured as described above, when the presser plate 68 is supported by the support portion 66, the presser plate 68 is arranged so that the outer edge portion 76 overlaps the support portion 66. . With this arrangement, the caulking portion 64 protrudes from the outside of the inner edge portion 74 to the upper side of the holding plate 68, and the outer edge portion 76 protrudes outside the support portion 66 and covers the upper portion of the inner race 72. In this state, when the caulking process is performed by bending the caulking portion 64 toward the presser plate 68, the presser plate 68 is fixed to the upper end of the rod holding cylinder 32, and the inner race 72 has the outer edge portion 76 and the flange portion. It is clamped by 38 bearing surfaces.

  The bearing 70 has an outer race 78 that can rotate relative to the inner race 72. The outer race 78 is fixed to an upper metal fitting 82 which is an attachment member fixed to the mount portion on the vehicle body side by a bolt 80. That is, the bearing 70 is constituted by an inner race 72 that functions as an inner peripheral portion, an outer race 78 that functions as an outer peripheral portion, and a plurality of bearing balls 81 that are a mechanism that allows relative rotation thereof as a connecting ring. ing. Therefore, the bearing 70 allows the chamber shell 39 to rotate with respect to the vehicle body, and the shell cap 30 positioned at the upper end of the chamber shell 39 is connected to the upper metal fitting 82 via the rod holding cylinder 32 and the bearing 70. .

  When the wheel and the vehicle body approach and separate from each other, a damping force is generated in the shock absorber 16, and the reaction force of the force causes the rod 41 and the rod holding cylinder 32 to deform the elastic body 54 of the rubber bush 48, thereby Relative displacement in the axial direction. Therefore, a shear stress is generated in the elastic body 54 in the axial direction of the rod 41. Furthermore, when the vehicle and the vehicle body approach and separate from each other with a relatively large force, such as when the vehicle passes through a step, the rod 41 and the rod holding cylinder 32 are relatively displaced by largely deforming the elastic body 54. Due to the displacement, the stopper 55 which is displaced together with the rod 41 is brought into contact with the presser plate 68 or the rod holding cylinder 32 via a stopper rubber 84 which is an annular buffer provided on the outer edge of the collar portion thereof. Specifically, when the rod 41 is displaced upward in the axial direction with respect to the rod holding cylinder 32, the stopper 55 is interposed via the stopper rubber 84 positioned between the stopper 55 and the pressing plate 68. On the other hand, when the rod 41 is displaced downward in the axial direction with respect to the rod holding cylinder 32, the stopper 55 is interposed via a stopper rubber 84 positioned between the rod 41 and the rod holding cylinder 32. The inner wall of the rod holding cylinder 32 abuts on a step surface formed between the upper part 34 and the lower part 36. Therefore, when the wheel and the vehicle body approach and separate from each other by a relatively large force, the range of relative displacement between the rod 41 and the rod holding cylinder 32 is limited by the contact. Therefore, the coupling device 12 can prevent the shearing force generated in the elastic body 54 from becoming excessive by suppressing the deformation amount of the elastic body 54 and prevent the durability of the elastic body 54 from being impaired. It is configured to be able to.

  FIG. 3 is a cross-sectional view of the connecting device 102 of the conventional vehicle suspension apparatus 100. In the following description of the vehicle suspension apparatus 100, only the components necessary for clarifying the characteristics of the vehicle suspension apparatus 10 of this embodiment will be described, and descriptions of the other components will be omitted. To do. An annular chamber cap 108 having a hole 106 at the center is fixed to the upper end of the chamber 104 of the vehicle suspension apparatus 100, and a cylindrical rod holding cylinder 110 is fitted into the hole 106. It is. The rod holding cylinder 110 and the chamber cap 108 are welded. In this welding process, the rod holding cylinder 110 and the chamber cap 108 are integrated with no gap therebetween. An annular bearing support 112 having an L-shaped cross section is welded to the upper surface of the chamber cap 108, and the bearing support 112 is fixed to the chamber cap 108 by this welding process. The bearing support 112 supports and supports the inner race 72 of the bearing 70 for allowing the chamber shell 39 to rotate with respect to the vehicle body. Further, the upper end portion of the bearing support 112 is bent to caulk the inner race 72, and the inner race 72 is clamped by the bearing support 112 by the caulking process.

  The outer cylinder 120 of the rubber bush 118 is fixed to the inner peripheral surface of the rod holding cylinder 110 by being press-fitted into the rod holding cylinder 110. A rebound side stopper 122 is supported at the upper end portion of the outer cylinder 120, and the rebound side stopper 122 is caulked by bending the upper end portion of the rod holding cylinder 110, and the rod holding cylinder 110 is subjected to the caulking process. It is fixed. Further, the bound side stopper 126 is fixed to the rod 124 above the rebound side stopper 122, and can be displaced in the axial direction with respect to the rod holding cylinder 110 together with the rod 124 of the shock absorber. An annular rebound stopper rubber 128 is fixed to the upper surface of the rebound stopper 122, and an annular bound stopper rubber 132 is fixed to the upper portion of the inner cylinder 130 of the rubber bush 118.

  In the connecting device 102 configured as described above, when the rod 124 is displaced upward in the axial direction with respect to the rod holding cylinder 110, the bound side stopper rubber 132 abuts against the lower surface of the rebound side stopper 122. Is limited. On the other hand, when the rod 124 is displaced downward in the axial direction with respect to the rod holding cylinder 110, the rebound stopper rubber 128 abuts against the lower surface of the bound stopper 126, so that the displacement of the rod 124 is limited. Therefore, the coupling device 102 can prevent the shear stress generated in the elastic part of the rubber bush 118 from becoming excessive, and can prevent the durability of the elastic part from being impaired. It is.

  As described above, in the conventional vehicle suspension apparatus 100, in the manufacture of the coupling device 102, the welding process between the rod holding cylinder 110 and the chamber cap 108 and the welding between the chamber cap 108 and the bearing support 112 are performed twice. And two caulking steps in caulking the bearing support 112 to the inner race 72 and caulking the rod holding cylinder 110 to the rebound side stopper 122 are required. In the vehicle suspension apparatus 10 of the present embodiment, the welding process is required only once in the welding of the flange portion 38 of the rod holding cylinder 32 and the shell cap 30, and the caulking process is the pressing of the caulking section 64 of the rod holding cylinder 32. This is only required once in the caulking to the inner edge 74 of the plate 68. Further, in the conventional vehicle suspension apparatus 100, the bearing support 112 is used to fix the inner race 72 of the bearing 70. However, in the vehicle suspension apparatus 10 of the present embodiment, only the inner race 72 is fixed. Necessary bearing support is not provided. Therefore, according to the vehicle suspension device 10 of the present embodiment, the number of parts constituting the coupling device 12 is reduced and the number of steps for assembling these components is reduced as compared with the conventional vehicle suspension device 100. It can be done.

  FIG. 5 shows a cross-sectional view of another connecting device 140 that can be used in the vehicle suspension device 10 of the present embodiment. In the coupling device 140, a fastening process by fastening using a bolt 146 is performed for fixing the presser plate 142 to the rod holding cylinder 144 instead of a caulking process. That is, the rod holding cylinder 144 is provided with a screw hole for fastening the bolt 146 in the support portion 148 thereof, and a hole for the bolt 146 to be inserted into the holding plate 142. The holding plate 142 is fixed to the rod holding cylinder 144 by fastening the bolt 146 to the rod holding cylinder 144. As described above, the fixing of the presser plate to the rod holding cylinder can be performed not only by the caulking process but also by various processes such as a fastening process and a welding process.

  Further, as shown in FIG. 6, the vehicle suspension apparatus 10 of the present embodiment can use an insulator 160 made of an elastic body as a connecting ring instead of the bearing 70. When the vehicle suspension device 10 is used on the front wheel side which is a steered wheel, the chamber shell 39 rotates greatly with respect to the vehicle body. Can be done. On the other hand, when the vehicle suspension device 10 is used on the rear wheel side that is a non-steered wheel and the chamber shell 39 does not rotate significantly with respect to the vehicle body, a sufficient amount of rotation can be obtained by the insulator 160. it can. The insulator 160 is configured to include an annular elastic body 162 and an inner peripheral member 164 fixed to the inner peripheral portion thereof. Further, the outer peripheral portion of the insulator 160 is fixed to the upper metal fitting 82 fixed to the mount portion of the vehicle body, and the elastic body 162 causes relative rotation between the inner peripheral member 164 and the upper metal fitting 82, that is, the elastic body 162. Relative rotation between the inner periphery and the outer periphery is allowed. Similarly to the inner race 72 of the bearing 70, the insulator 160 is sandwiched between the outer edge portion 76 and the bearing surface of the flange portion 38 in the inner peripheral member 164 thereof.

  Therefore, according to the vehicle suspension apparatus 10 of the present embodiment, even when the insulator 160 is used, a member that is used only for fixing the inner peripheral member 164 of the insulator 160 is necessary as compared with the conventional vehicle suspension apparatus 100. Therefore, the number of parts constituting the connecting device 12 can be made relatively small, and the steps for assembling these parts can be made relatively small.

  10: Air suspension device 12: Coupling device 16: Shock absorber 26: Cylinder 30: Shell cap (upper end) 32: Rod holding cylinder 38: Ridge part 39: Chamber shell 40: Air chamber 41: Rod 48: Rubber bushing 50: Inner cylinder (inner circumference) 52: Outer cylinder (outer circumference) 54: Elastic body 55: Stopper (ス ト ッ パ) 68: Presser plate 70: Bearing (connecting ring) 72: Inner race (inner circumference) 74: Inner edge 76 : Outer edge part 78: Outer race (outer peripheral part)

Claims (1)

A shock absorber disposed between the vehicle body and the wheel, having a cylinder connected to the wheel holding member and a rod extending from the cylinder, and generating a damping force for relative movement between the vehicle body and the wheel;
An air spring that has a chamber shell that divides the shock absorber as an air chamber and suspends the vehicle body depending on the air pressure in the air chamber;
A suspension device for a vehicle, comprising: a connecting device for connecting a rod of the shock absorber and an upper end portion of the chamber shell to a mount portion of a vehicle body;
The connecting device is
An attachment member fixedly attached to the mount portion;
A rod holding cylinder fixed to the upper end portion of the chamber shell in a state of generally cylindrical and containing the upper end portion of the rod of the shock absorber inside,
It is generally ring-shaped, (a) an outer peripheral portion fixed to the mounting member, and (b) a lower end supported by a support surface formed as a stepped surface facing upward at the outer peripheral portion of the rod holding cylinder. An inner peripheral portion fitted to the outer peripheral portion of the rod holding cylinder, and (c) a mechanism that allows relative rotation between the outer peripheral portion and the inner peripheral portion, and the rotation of the chamber shell relative to the vehicle body A connecting ring for connecting the upper end of the chamber shell to the mounting member via the rod holding cylinder,
It has a generally cylindrical shape, an outer peripheral portion is fixed to the inner peripheral surface of the rod holding cylinder, an inner peripheral portion is fixed to an outer peripheral surface of the upper end portion of the rod of the shock absorber, and the rod holding cylinder and A rubber bush disposed inside the rod holding cylinder to allow the rod holding cylinder to hold the upper end of the shock absorber while allowing relative displacement in the axial direction with the rod of the shock absorber;
A hook that is fixed to the upper end of the rod of the shock absorber at a position above the rubber bush, and projects toward the inner periphery of the rod holding cylinder,
It is generally ring-shaped, and is fixed to the upper end of the rod holding cylinder so that the outer edge protrudes outside the outer periphery of the rod holding cylinder and the inner edge protrudes inside the inner periphery of the rod holding cylinder, The outer edge portion sandwiches the inner peripheral portion of the connecting ring with the support surface of the rod holding cylinder, and the inner edge portion cushions the hook fixed to the upper end portion of the rod of the shock absorber. A vehicle suspension device, comprising: a presser plate configured to limit a range of the relative displacement of the rod of the shock absorber by being brought into contact with itself through a body.

Images