JP5200945B2 - Car suspension equipment - Google Patents

Description

  The present invention includes a coil spring having an upper end connected to the vehicle body side and a lower end connected to the wheel side, a spring seat member formed on the upper surface of a seat surface that supports the lower end of the coil spring, The present invention belongs to a technical field related to an automobile suspension device including a cushion sheet disposed between a lower end portion and a seating surface of the spring seat member.

  As a cushion seat used in this type of suspension device, a cylindrical portion inserted into the lower end portion of the coil spring and a saddle-like connection to the lower end portion of this cylindrical portion, the seating surface of the coil spring is formed on the upper surface. The thing of the rubber | gum provided with the sheet | seat part which becomes is known (for example, refer patent document 1). In this cushion sheet, the seating surface is formed flat (planar), and when a load is applied to the coil spring, the seating surface is recessed in the seat thickness direction to absorb the impact.

In addition to this, the cushion sheet has a generally C-shaped overall shape and a U-shaped cross section, and the cushion sheet is fitted to the wire at the lower end of the coil spring ( For example, see Patent Document 2).
Japanese Utility Model Publication No. 62-013237 JP 2008-024158 A

  However, as shown in FIG. 10, when the load is applied to the coil spring 201, the seating surface 202 is pushed downward by the coil spring 201 to be recessed as shown in FIG. 10, and therefore exists on the seating surface 202. There is a problem that the foreign matter 203 or the like is caught between the coil spring 201 and the cushion sheet 205 and bites.

  Here, it is conceivable to provide a fitting groove for fitting the coil spring 201 on the seating surface 202. In this case, however, there is a gap between the seating surface 202 and the coil spring 201 due to an assembly error of the coil spring 201 or deformation due to a load. There is a problem that it is easy to bite foreign matter.

  Moreover, in what is shown to patent document 2, since it is necessary to fit and assemble | attach a cushion sheet to the lower end part of a coil spring, there exists a problem that an assemblability is bad. Further, since the overall shape of the cushion sheet is C-shaped, the positioning strength is insufficient, and a load from the coil spring causes a displacement in the radial direction or the circumferential direction. As a result, the coil spring and the cushion sheet There is a problem that foreign matter intrudes between them, and there is room for improvement in terms of protecting the coating on the surface of the coil spring.

  The present invention has been made in view of such a point, and an object of the present invention is to provide an automobile suspension device capable of reliably protecting the surface of a coil spring with a simple configuration.

In order to achieve the above object, according to the present invention, the cushion sheet is extended along the outer peripheral surface of the annular body and the annular body, and between the seating portion of the coil spring and the seating surface of the spring seat member. A seat portion that is arranged, and a separation portion that is connected to the seat portion and is separated from the annular body and extends along the outer peripheral surface thereof, and the seat portion of the coil spring is supported by the seat portion, and the inclination start portion of the coil spring Is fitted into a fitting groove formed on the upper surface of the separation portion and supported, and the thickness of the lower portion of the fitting groove in the separation portion of the cushion sheet is set to be inclined with respect to the coil spring in an unloaded state. The distance between the starting portion and the seating surface of the spring seat member is larger than the distance along the axial direction of the coil .

  Specifically, in the first aspect of the present invention, a coil spring having an upper end connected to the vehicle body side member and a lower end connected to the wheel side member and a seating surface supporting the lower end of the coil spring are formed on the upper surface. And a cushion seat disposed between the lower end of the coil spring and the seating surface of the spring seat member.

The lower end portion of the coil spring includes a seating portion formed along the seating surface of the spring seat member, and an inclination starting portion that extends from the seating portion and tilts upward so as to be separated from the seating surface. The cushion seat extends along the outer peripheral surface integrally with the annular body, and is disposed between the seating portion of the coil spring and the seating surface of the spring seat member. A seat portion and a separation connected to the seat portion and separated from the annular body and extending along an outer peripheral surface thereof, and disposed between an inclination start portion of the coil spring and a seating surface of the spring seat member A fitting groove is formed on the upper surface of the separation part, extending along the inclination start part of the coil spring, and into which the inclination start part is fitted, and the fitting in the separation part of the cushion sheet. The thickness of the lower part of the groove is And larger than the distance along the said coil axis direction of the inclined starting portion and the seat surface of the spring seat member of the coil spring.

  According to this structure, since the part which receives the seating part in a cushion sheet is comprised with the cyclic | annular body, the positioning strength as the whole cushion sheet can be raised. In addition, the inclination starting portion where the displacement amount (the displacement amount in the horizontal plane perpendicular to the coil axis direction and the coil axis direction) when the load load is applied to the coil spring is separated (branched) from the annular body. By being protected by the separation part, the separation part can be made to follow the displacement of the inclination start part (particularly, the displacement in the horizontal plane) with certainty.

  Therefore, sufficient adhesion between the inner surface of the fitting groove and the coil spring can be ensured regardless of the load load of the coil spring. Therefore, it is possible to prevent foreign matter from entering the fitting groove and to reliably protect the coating on the surface of the coil spring.

Then, the thickness of the lower portion of the fitting groove in the separation portion of the seat cushion, in the coil axis direction of the inclined starting portion and the seat surface of the spring seat member of the coil spring in the unloaded condition than along distance by greatly, with the inner surface of the fitting groove in a state where the coil spring is in the unloaded state can be brought into close contact with the inclined start portion of the coil spring, even if the applied load is applied to the coil spring, the coil spring According to the displacement of the (tilt start portion) in the coil axis direction, the thickness of the separation portion can be quickly changed to maintain the contact state.

  In this specification, when the coil spring is in an unloaded state means that the wheel position is at the lowest position with the coil spring assembled to the suspension.

According to a second aspect of the present invention, in the first aspect of the present invention, when the coil spring is in an unloaded state, the upper surface of the separation portion and the fitting groove are seen in a cross section along the width direction of the separation portion. It is assumed that the angle on the side of the separating portion formed by the inner surface at the edge of the groove is 90 ° or less.

  According to this configuration, when the inclination start portion of the coil spring is displaced downward in the coil axial direction and pushes the inner surface of the fitting groove downward, the foreign matter located near the edge of the fitting groove is removed. It is possible to prevent the coil spring and the cushion sheet from being pinched with the depression.

According to a third aspect of the present invention, in the first or second aspect of the invention, the annular body is formed such that a radial width of a portion facing the separation portion in a radial direction becomes narrower toward a lower side. It shall be.

  According to this configuration, a space for providing the separation portion can be secured wider toward the lower side (seat surface side).

According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the coil spring is disposed on the outer side in the vehicle width direction with respect to a predetermined vehicle body side wall member, and supports the lower end portion of the coil spring. The spring seat member is provided with a peripheral wall portion formed so as to surround the lower end portion along an outer peripheral edge thereof, and a notch portion is provided at a portion of the peripheral wall portion where the distance from the vehicle body side wall member is closest. In the spring seat member, a portion corresponding to the notch is formed with a seat extension extending outward in the radial direction, and the lower surface of the separation portion of the cushion seat has a diameter. A reinforcing support seat that bulges outward in the direction is provided, and the reinforcing support seat is formed so as to be positioned on the seat extension portion.

  As described above, the notch portion is provided in the portion where the distance from the vehicle body side wall member in the peripheral wall portion is the shortest, and the seat extension portion is provided in the portion corresponding to the notch portion to support the reinforcing support seat. Thus, it is possible to reliably prevent the separation portion from falling (bending) in the width direction due to the reaction force from the coil spring while effectively utilizing the space.

In the invention of claim 5, in the invention of claim 4 , the seat surface of the spring seat member is formed with a step surface that causes a step in the circumferential direction, and the outer peripheral surface of the annular body is formed in the radial direction. A positioning piece that protrudes outward and performs positioning in the circumferential direction is provided, and a contact portion that contacts the step surface is formed on the positioning piece.

  According to this configuration, the annular body (and thus the cushion sheet) can be easily positioned in the circumferential direction by bringing the contact portion of the positioning piece into contact with the stepped surface of the spring seat member. Therefore, the assembling property of the cushion seat to the spring seat member can be improved.

According to a sixth aspect of the invention, in the fifth aspect of the invention, the annular body and the sheet portion are L-shaped when viewed in a cross section along the radial direction of the annular body.

  By carrying out like this, the setting operation | work on the cushion seat of a coil spring can be performed easily.

As described above, according to the automobile suspension device of the present invention, the coating on the surface of the coil spring can be reliably protected with a simple configuration. Further, the inner surface of the fitting groove can be brought into close contact with the inclination start portion of the coil spring while the coil spring is in an unloaded state, and the coil axis of the coil spring (inclination start portion) can be applied even when a load load is applied to the coil spring. According to the displacement in the direction, the thickness of the separation portion can be quickly changed to maintain the tight contact state.

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

  FIG. 1 shows a suspension apparatus 1 for an automobile according to an embodiment of the present invention. The suspension apparatus 1 is disposed in a wheel house 100 of an automobile, and its grounding property is obtained by suspending left and right wheels on a vehicle body. It is what raises. In this embodiment, a strut system is adopted as the suspension system. That is, the suspension device 1 has a shock absorber 2 and a coil spring 3 externally attached to the shock absorber 2, and the wheel 4 is mounted on the vehicle body by a strut structure including the shock absorber 2 and the coil spring 3. It is configured to be suspended.

  The shock absorber 2 includes a cylindrical cylinder 2a filled with oil therein, and an absorber rod 2b inserted into the cylinder 2a so as to be able to stroke (extend / contract) in the axial direction. In the house 100, the upper end side is disposed to be inclined inward in the vehicle width direction with respect to the lower end side. That is, the shock absorber 2 is inclined so as to approach the vehicle body side wall member 100a (the vehicle body member constituting the side wall portion of the wheel house 100) as it goes upward.

  The upper end portion of the absorber rod 2b is fixed to the strut outer bracket 6 via the rod connecting member 5, and the strut outer bracket 6 is bolted to the upper end portion of the arch portion 100b (vehicle body member) of the wheel house 100 (illustrated). (Omitted). The lower end of the absorber rod 2b is connected to a piston 2c slidably disposed in the cylinder 2a, and an orifice hole (not shown) for generating a damping force (piston) is formed in the piston 2c. Has been. In FIG. 1, reference numeral 10 denotes a nut for fixing the absorber rod 2 b to the rod connecting member 5.

  The lower end of the cylinder 2a is connected to a wheel hub 8 (wheel 4) through a knuckle 7. The wheel hub 8 is rotatably supported with respect to the knuckle 7 via a hub bearing 9, and the wheel 4 is attached to the wheel hub 8 so as to rotate together.

  A lower spring seat member 15 (details will be described later) for supporting the lower end portion of the coil spring 3 is attached to the upper end portion of the cylinder 2a by welding.

  The coil spring 3 is a compression coil spring formed by forming an element wire in a substantially spiral shape (coil shape), and the surface of the element wire is coded. The upper end portion of the coil spring 3 is supported by the upper spring seat member 16, and the lower end portion is supported by the lower spring seat member 15.

  The lower spring seat member 15 and the upper spring seat member 16 each have a seat surface 15 a and a seat surface 16 a for supporting the coil spring 3, and the upper end portion of the coil spring 3 is an upper end portion of the telescopic cover 17. The lower end portion of the coil spring 3 is in contact with a seat surface 15a of the lower spring seat member 15 with a cushion sheet 18 to be described later interposed therebetween (indirect). Are in contact with each other). The expansion / contraction cover 17 has a lower end attached to the lower spring seat member 15 and extends and contracts together with the absorber rod 2b.

  As shown in FIGS. 3 to 7, the lower spring seat member 15 has a cylindrical portion 21 that is reduced in diameter toward the upper side and is externally fitted so that the upper end portion is in close contact with the outer peripheral surface of the cylinder 2 a, and the cylindrical portion 21. And a seat portion 22 that extends radially outward from the lower end portion and has a seat surface 15a formed on the upper surface.

  The seat portion 22 has a substantially circular shape when viewed from the axial direction of the cylindrical portion 21 (the direction that coincides with the axial direction of the cylinder 2a, hereinafter referred to as the Z-axis direction), and is inward in the vehicle width direction. Is inclined so as to be lower than the outside (see FIG. 3).

  A peripheral wall portion 23 that protrudes upward in the Z-axis direction is provided in a range of about 3/4 of the outer peripheral edge portion of the seat portion 22 in the vehicle width direction inner side (side wall surface side of the wheel house 100). .

  A first cutout portion 23 a into which a positioning piece 35 (described later) of the cushion sheet 18 is fitted, and a second cutout portion 23 b in which a reinforcing support seat 52 b (described later) of the cushion sheet 18 is positioned are located on the peripheral wall portion 23. Is formed. The second notch 23b is formed in a portion of the peripheral wall 23 that is closest to the vehicle body side wall member 100a. 4 and 7, reference numeral 24 denotes a drain hole for preventing water and mud from accumulating on the seat portion 22.

  As shown in FIG. 7, the seat surface 15a of the seat portion 22 starts at a position corresponding to the first cutout portion 23a and starts at a predetermined lead angle around the Z axis in the counterclockwise direction of FIG. A gently inclined surface 25 inclined upward (spirally), a flat surface 26 connected to the end of the gently inclined surface 25 on the end point side and extending in the counterclockwise direction with a substantially constant height, and a flat surface 26 And a stepped surface 27 connecting the end of the gently inclined surface 25 on the start point side (the end on the lower side). The step surface 27 is an inclined surface that decreases in the counterclockwise direction, and its inclination angle is larger than the inclination angle of the gently inclined surface 25.

  A seat extension portion 28 (see FIGS. 4 and 7) that protrudes radially outward is formed at a portion of the seat portion 22 that corresponds to the second notch 23 b. The seat extension 28 has a substantially rectangular shape that is long in the circumferential direction when viewed from the Z-axis direction. A U-shaped notch 29 (see FIG. 7) is formed at the boundary between the seat extension 28 and the peripheral wall 23 on both sides of the seat 22 to prevent cracking during molding.

  The lower end portion of the coil spring 3 includes a seating surface 3a (see FIG. 3) in which the strands are turned around the coil axis along the seating surface 15a (slowly inclined surface 25) by about 3/4. It is comprised with the inclination start part 3b which inclines upwards so that it may space apart from 15a. It can be said that the inclination start portion 3b is a portion where the amount of displacement in the coil axial direction becomes the largest when a load is applied to the coil spring 3, in other words, the portion where the maximum stress acts.

  The cushion sheet 18 is an integrally molded product made of an appropriate rubber material such as natural rubber (NR), for example, and is substantially annularly separated from the seat body 31 (see FIG. 8) and separated (branched) from the seat body 31. And a separating portion 32 extending in the circumferential direction along the sheet main body 3.

  The sheet main body 31 includes an annular ring body 34 having a height similar to the outer diameter of the wire of the coil spring 3, a positioning piece 35 projecting radially outward from the outer peripheral surface of the ring body 34, and an annular shape A sheet portion 36 is formed along the lower edge of the body 34 in a range that extends approximately 3/4 in the counterclockwise direction from the positioning piece 35 as a starting point. The part is connected to the separation part 32.

  The width W1 (see FIG. 6) of the positioning piece 35 is substantially equal to the notch width W2 of the first notch 23a. Note that the width W1 of the positioning piece 35 is preferably set slightly smaller than the notch width W2 if emphasis is placed on the assemblability, and the width W1 of the positioning piece 35 is slightly smaller than the notch width W2 if emphasis is placed on positioning accuracy. It is preferable to set a larger value.

  The positioning piece 35 is formed with an inclined surface 35 a that comes into contact with the step surface 27 of the lower spring seat member 15 in a state where the cushion sheet 18 has been positioned. The contact between the stepped surface 27 and the inclined surface 35a can prevent the sheet body 31 from being displaced in the circumferential direction.

  The seat portion 36 is formed integrally with the annular body 34 along the outer peripheral surface thereof. The seat portion 36 is arranged between the seating portion 3a of the coil spring 3 and the seating surface 15a of the lower spring seat member 15, and is configured to receive the seating portion 3a.

  The seat portion 36 and the annular body 34 are in a substantially vertical relationship with each other. That is, the sheet portion 36 and the annular body 34 have a substantially L shape in a cross section along the radial direction of the annular body 34.

  The separation part 32 is connected to the sheet part 36 and is separated from the annular body 34 and extends along the outer peripheral surface thereof. A gap 41 is formed between the separation part 32 and the annular body 34. .

  As shown in FIG. 3, the separation portion 32 is formed so that its width (width dimension in the radial direction) becomes wider toward the lower side (closer to the seating surface 15 a). On the other hand, the annular body 34 is formed so that the thickness of the portion facing the separation portion 32 in the radial direction (thickness dimension in the radial direction) becomes thinner toward the lower side (in the shape of an inverted triangle). Has been.

  On the upper surface 45 of the separation part 32, a fitting groove 46 is formed which extends along the inclination start part 3b of the coil spring 3 and into which the inclination start part 3b is fitted.

  The cross-sectional shape of the fitting groove 46 (cross-sectional shape perpendicular to the extending direction of the groove) is a semicircular shape corresponding to the shape of the wire of the coil spring 3, and its radius is substantially equal to or slightly smaller than the wire radius. Is set to

  The thickness d1 (the thickness d1 before setting the coil spring 3 on the cushion sheet 18) of the portion below the fitting groove 46 in the separation portion 32 is the coil spring when the coil spring 3 is in an unloaded state. The thickness is set such that no gap is generated between the third inclination start portion 3 b and the inner surface of the fitting groove 46.

  That is, when the coil spring 3 is in an unloaded state, the distance along the coil axis direction between the inclination start portion 3b and the seat surface 15a (the distance along the direction perpendicular to the seat surface 15a) is d2. , D1> d2 (see FIG. 3).

  The upper surface 45 of the separation part 32 is formed so as to abut substantially perpendicularly (at approximately 90 °) on the surface of the wire of the inclination start part 3b of the coil spring 3 at the edge of the fitting groove 46 (see FIG. 3). ).

  That is, when viewed in a cross section along the width direction of the separation portion 32, the angle on the separation portion side formed by the upper surface 45 of the separation portion 32 and the inner surface of the fitting groove 46 at the edge of the groove 46 is 90 °. It is said that. Although this angle may be less than 90 °, it is preferably 90 ° from the viewpoint of sufficiently securing the side wall thickness of the fitting groove 46.

  A lip portion 47 (see FIGS. 3 and 5) that slightly protrudes toward the coil spring 3 is formed at the edge and tip of the fitting groove 46 in order to prevent foreign matter from entering the groove 46. Further, the edge of the fitting groove 46 on the sheet portion 36 side is widened in a funnel shape when viewed from above, and is easily fitted with the coil spring 3 (see FIG. 8).

  As shown in FIGS. 4 and 9, a bulging portion 51 that bulges radially outward is formed on the outer peripheral surface of the separation portion 32, and the bulging portion 51 has the first notch formed by the positioning piece 35. It is formed so as to be fitted to the portion 23a and to be positioned at the second notch portion 23b.

  As shown in FIG. 9, a support seat 52 is formed on the lower surface of the separation portion 32 so as to contact the seat surface 15 a of the lower spring seat member 15 and support the separation portion 32. The support seat 52 includes a main body support seat 52 a and a reinforcing support seat 52 b that bulges radially outward with respect to the main body support seat 52 a and supports the bulging portion 51. The reinforcing support seat 52b is supported by the seat extension 28 (see FIG. 4) of the lower spring seat member 15.

  As described above, in the above-described embodiment, the cushion sheet 18 includes the substantially annular seat body 31 and the separation portion 32 that is separated from the seat body 31 and extends along the seat body 31, and the coil spring 3. The inclination start portion 3b is fitted and supported in the fitting groove 46 of the separation portion 32.

  Thus, by forming the sheet body 31 (annular body 34) in a substantially annular shape, the positioning strength can be improved as compared with the case where it is formed in, for example, a C shape.

  In addition, when the load load is applied to the coil spring 3, the inclination start portion 3b having the largest displacement amount is supported by the separation portion 32 that separates (branches) from the seat body 31 (annular body 34). The separating portion 32 can be quickly followed (displaced) with respect to the radial and circumferential displacements of the coil spring 3, and the inner surface of the fitting groove 46 can always be brought into close contact with the surface of the tilt start portion 3b. . Therefore, foreign matter can be prevented from entering the fitting groove 46 and the coating on the surface of the coil spring 3 can be protected.

  Moreover, in the said embodiment, thickness d2 of the part below the fitting groove | channel 46 in the isolation | separation part 32 of the cushion sheet 18 is the coil of the inclination start part 3b and the seating surface 15a in the assembly completion state of the coil spring 3. It is larger than the distance d1 along the axial direction.

  Thus, by ensuring a large thickness of the separation portion 32, not only when the coil spring 3 is in an unloaded state, but also when the load load is applied to the coil spring 3, the inner surface of the fitting groove 46 is connected to the coil spring. 3 (inclination start portion 3b) can always be brought into close contact with the strand surface. Therefore, foreign matter can be reliably prevented from entering the fitting groove 46.

  Moreover, in the said embodiment, the angle which the upper surface 45 of this separation part 32 and the surface of the said coil spring 3 (inclination start part 3b) make in the edge of the fitting groove 46 in the separation part 32 of the cushion sheet 18 is 90 degrees. Has been.

  As a result, when a load is applied to the coil spring 3 and the inclination start portion 3b is pushed down, the foreign matter existing near the edge of the fitting groove 46 is moved between the coil spring 3 and the cushion sheet 18 along with the depression. It is possible to prevent the biting more reliably.

  Moreover, in the said embodiment, the said isolation | separation part 32 is formed so that a width | variety may become wide toward the seating surface 15a side of the spring seat member 15. FIG. In addition, a bulging portion 51 is formed on the outer peripheral surface of the separation portion 32, and a reinforcing support seat 52 b that supports the bulging portion 51 is formed on the lower surface of the separation portion 32.

  Thereby, it can prevent that the isolation | separation part 32 bends in the width direction by the reaction force from the coil spring 3 at the time of the assembly | attachment of the coil spring 3, or the input of a load load.

  Moreover, in the said embodiment, the 2nd notch part 23b is formed in the part nearest to the vehicle body side wall member 100a in the surrounding wall part 23. FIG. When this second notch 23b is not provided, the distance between the peripheral wall 23 and the vehicle body side wall member 100a becomes smaller toward the upper side as shown by the broken line in FIG. Is called. Therefore, in the above-described embodiment, the second cutout portion 23b is provided to secure a sufficient upper space, and the seat extension portion 28 is provided in a lower space having a sufficient space so as to support the reinforcing support seat 52. Since it is used, it is possible to suppress the bending in the width direction of the separation portion 32 due to the reaction force from the coil spring 3 while making effective use of the space.

(Other embodiments)
The configuration of the present invention is not limited to the above embodiment, but includes various other configurations. That is, in the above-described embodiment, the strut system is adopted as the suspension system of the suspension device 1, but the present invention is not limited to this, and a multi-link system or a trailing arm system may be employed.

  The present invention includes a coil spring having an upper end connected to the vehicle body side and a lower end connected to the wheel side, a spring seat member formed on the upper surface of a seat surface that supports the lower end of the coil spring, The present invention is useful for an automobile suspension apparatus including a lower end portion and a cushion sheet disposed between the seat surface of the spring seat member, and particularly useful for a suspension apparatus adopting a strut system.

It is sectional drawing perpendicular | vertical with respect to the vehicle front-back direction which shows the suspension apparatus of the motor vehicle which concerns on embodiment of this invention. It is an expansion perspective view which shows the support | pillar part (strut part) of a suspension apparatus. It is the III-III sectional view taken on the line in FIG. It is the perspective view seen from the slanting upper side which shows the state which set the cushion sheet to the lower spring seat member. It is the VV sectional view taken on the line in FIG. FIG. 3 is a view in the direction of the arrow VI in FIG. 2. It is the perspective view seen from the slanting upper side which shows a spring seat member. It is the figure which looked at the cushion sheet from the upper side. It is the figure which looked at the cushion sheet from the lower side. It is explanatory drawing for demonstrating a prior art, Comprising: (a) shows the case where a coil spring is in a no-load state, (b) shows the case where a coil spring is in a maximum load state.

1 Suspension device 3 Coil spring 3a Seating part
3b Inclination start portion 15 Lower spring seat member (spring seat member)
15a Seat surface 18 Cushion seat 23 Peripheral wall portion 23b Notched portion 27 for bulging portion Step surface 28 Seat portion extension portion 32 Separating portion 34 Annular body 35 Positioning piece 35a Inclined surface 46 Fitting groove 52b Reinforcement support seat 100a Car body side wall member

Claims (6)

A coil spring having an upper end connected to the vehicle body side member and a lower end connected to the wheel side member; a spring seat member formed on the upper surface with a seating surface supporting the lower end of the coil spring; and the lower end of the coil spring And a cushion seat disposed between the seat surface of the spring seat member, and an automobile suspension device comprising:
The lower end portion of the coil spring includes a seating portion formed along the seating surface of the spring seat member, and an inclination starting portion that extends from the seating portion and tilts upward so as to be separated from the seating surface. Including
The cushion sheet is
An annular body;
A seat portion that extends integrally with the annular body along an outer peripheral surface thereof and is disposed between a seating portion of the coil spring and a seating surface of the spring seat member;
A separation portion connected to the seat portion and separated from the annular body and extending along an outer peripheral surface thereof; and a separation portion disposed between an inclination start portion of the coil spring and a seating surface of the spring seat member;
With
On the upper surface of the separation portion, a fitting groove is formed that extends along the inclination start portion of the coil spring and into which the inclination start portion is fitted ,
The thickness of the lower portion of the fitting groove in the separation portion of the cushion sheet is along the axial direction of the coil between the inclination start portion of the coil spring and the seating surface of the spring seat member in an unloaded state. An automobile suspension device characterized by being larger than a distance . In automotive suspension system according to claim 1 Symbol placement,
When the coil spring is in an unloaded state, when viewed in a cross-section along the width direction of the separation portion, the separation portion side formed by the upper surface of the separation portion and the inner surface of the fitting groove at the edge of the groove The vehicle suspension apparatus is characterized in that the angle of the vehicle is 90 ° or less. The automobile suspension device according to claim 1 or 2 ,
The suspension device for an automobile according to claim 1, wherein the annular body is formed such that a radial width of a portion facing the separation portion in the radial direction becomes narrower toward a lower side. The automobile suspension device according to any one of claims 1 to 3 ,
The coil spring is disposed on the outer side in the vehicle width direction with respect to a predetermined vehicle body side wall member,
The spring seat member supporting the lower end portion of the coil spring is provided with a peripheral wall portion formed so as to surround the lower end portion along the outer peripheral edge thereof,
A notch portion is formed in a portion where the distance from the vehicle body side wall member in the peripheral wall portion is the shortest,
In the spring seat member, a portion corresponding to the notch is formed with a seat extension extending outward in the radial direction,
A reinforcing support seat that bulges radially outward is provided on the lower surface of the separation portion of the cushion sheet,
The automobile suspension apparatus, wherein the reinforcing support seat is formed so as to be positioned in the seat extension portion. The automobile suspension device according to claim 4 ,
On the seat surface of the spring seat member, a step surface is formed that causes a step in the circumferential direction.
On the outer peripheral surface of the annular body, a positioning piece that protrudes radially outward and performs positioning in the circumferential direction is provided,
An automotive suspension apparatus, wherein the positioning piece is formed with a contact portion that contacts the stepped surface. The automobile suspension device according to claim 5 , wherein
The vehicle suspension apparatus according to claim 1, wherein the annular body and the seat portion are L-shaped in a cross section along the radial direction of the annular body.

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