Patent Publication Number: US-2022213943-A1

Title: Spring guide and suspension device

Description:
TECHNICAL FIELD 
     The present invention relates to a spring guide and a suspension device. 
     BACKGROUND ART 
     A suspension device provided with a shock absorber, a coil spring that is provided outside the shock absorber, and a spring guide that supports a lower end portion of the coil spring has been known (see JP2012-219825A). The spring guide has a metallic spring receiving member and a rubber sheet that is provided between the spring receiving member and the lower end portion of the coil spring. 
     The rubber sheet is provided with two aligning protrusions for aligning the rubber sheet with respect to the spring receiving member. The rubber sheet is installed to the spring receiving member by fitting the respective protruded portions to aligning holes provided in the spring receiving member. 
     SUMMARY OF INVENTION 
     In the suspension device described in JP2012-219825A, the spring receiving member forming the spring guide and the rubber sheet are separate parts. Therefore, the rubber sheet needs to be installed to the spring receiving member, and it takes time and labor for assembly thereof. In addition, there have been increasing demands for reducing weight of devices to be mounted on vehicles such as an automobile, etc. Therefore, there is a demand for reducing weight of the spring guide. 
     An object of the present invention is to reduce weight of a spring guide and to reduce a number of parts constituting the spring guide. 
     According to one aspect of the present invention, a spring guide attached to a shock absorber, the shock absorber being provided between a vehicle body and a wheel, the spring guide being configured to support a coil spring for elastically supporting the vehicle body, and the spring guide includes: a main body portion formed of a resin material; and an elastic part provided between the main body portion and an end portion of the coil spring, the elastic part is formed of a material having elastic modulus lower than the material forming the main body portion, the elastic part being integrally molded on the main body portion. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a partial sectional view of a suspension device according to a first embodiment of the present invention. 
         FIG. 2  is a perspective view of the spring guide according to the first embodiment of the present invention. 
         FIG. 3A  is a schematic plan view of the spring guide according to the first embodiment of the present invention as viewed from above, the schematic plan view showing a shape of the spring guide in a simplified form and schematically showing a region in which an elastic part is formed with a hatched pattern. 
         FIG. 3B  is a side sectional view of the spring guide according to the first embodiment of the present invention. 
         FIG. 4A  is a schematic plan view of the spring guide according to a modification of the first embodiment of the present invention as viewed from above, the schematic plan view showing a shape of the spring guide in a simplified form and schematically showing a region in which an elastic part is formed with a hatched pattern. 
         FIG. 4B  is a side sectional view of the spring guide according to the modification of the first embodiment of the present invention. 
         FIG. 5A  is a schematic plan view of the spring guide according to a second embodiment of the present invention as viewed from above, the schematic plan view showing a shape of the spring guide in a simplified form and schematically showing a region in which an elastic part is formed with a hatched pattern. 
         FIG. 5B  is a side sectional view of the spring guide according to the second embodiment of the present invention. 
         FIG. 6A  is a schematic plan view of the spring guide according to a modification of the second embodiment of the present invention as viewed from above, the schematic plan view showing a shape of the spring guide in a simplified form and schematically showing a region in which an elastic part is formed with a hatched pattern. 
         FIG. 6B  is a side sectional view of the spring guide according to the modification of the second embodiment of the present invention. 
         FIG. 7A  is a schematic plan view of the spring guide according to a third embodiment of the present invention as viewed from above, the schematic plan view showing a shape of the spring guide in a simplified form and schematically showing a region in which an elastic part is formed with a hatched pattern. 
         FIG. 7B  is a side sectional view of the spring guide according to the third embodiment of the present invention. 
         FIG. 8A  is a schematic plan view of the spring guide according to a modification of the third embodiment of the present invention as viewed from above, the schematic plan view showing a shape of the spring guide in a simplified form and schematically showing a region in which an elastic part is formed with a hatched pattern. 
         FIG. 8B  is a side sectional view of the spring guide according to the modification of the third embodiment of the present invention. 
         FIG. 9A  is a schematic plan view of the spring guide according to a fourth embodiment of the present invention as viewed from above, the schematic plan view showing a shape of the spring guide in a simplified form and schematically showing a region in which an elastic part is formed with a hatched pattern. 
         FIG. 9B  is a side sectional view of the spring guide according to the fourth embodiment of the present invention. 
         FIG. 10A  is a schematic plan view of the spring guide according to a modification of the fourth embodiment of the present invention as viewed from above, the schematic plan view showing a shape of the spring guide in a simplified form and schematically showing a region in which an elastic part is formed with a hatched pattern. 
         FIG. 10B  is a side sectional view of the spring guide according to the modification of the fourth embodiment of the present invention. 
         FIG. 11A  is a schematic plan view of the spring guide according to a first modification of this embodiment as viewed from above, the schematic plan view showing a shape of the spring guide in a simplified form and schematically showing a region in which an elastic part is formed with a hatched pattern. 
         FIG. 11B  is a side sectional view of the spring guide according to the first modification of this embodiment. 
         FIG. 12A  is a schematic plan view of the spring guide according to a second modification of this embodiment as viewed from above, the schematic plan view showing a shape of the spring guide in a simplified form and schematically showing a region in which an elastic part is formed with a hatched pattern. 
         FIG. 12B  is a side sectional view of the spring guide according to the second modification of this embodiment. 
         FIG. 13  is a side sectional view of the spring guide according to a third modification of this embodiment. 
         FIG. 14  is a partial sectional view of a vicinity of a lip of the spring guide according to a fifth modification of this embodiment. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     A suspension device  10  according to an embodiment of the present invention will be described with reference to the drawings. 
     The suspension device  10  is a device that is installed on an automobile (not shown) for stably suspending a vehicle body by positioning a wheel (not shown) and by generating a damping force so as to absorb impacts and vibrations received from a road surface during a travelling of a vehicle. 
     First Embodiment 
     The suspension device  10  according to a first embodiment of the present invention will be described with reference to  FIGS. 1, 2, 3A, and 3B .  FIG. 1  is a partial sectional view of the suspension device  10 . As shown in  FIG. 1 , the suspension device  10  is provided with: a shock absorber  1  that is provided between the vehicle body and the wheel; an upper mount  2  that is attached to a tip end of a piston rod (hereinafter, referred to as a rod)  1   a  of the shock absorber  1 ; a spring guide  100 A attached to an outer circumference of a cylinder  1   b  of the shock absorber  1 ; a coil spring  4  that is provided between the spring guide  100 A and the upper mount  2  and that elastically supports the vehicle body; a bump cushion  5  that is fitted to a rod  1   a  and that restricts a stroke of the shock absorber  1  in a contracting direction; a bump stopper  6  that is fitted to an end portion of the cylinder  1   b  on the side of the rod  1   a ; and a tubular dust boot  7  that protects the rod  1   a.    
     The shock absorber  1  has the cylinder  1   b  and the columnar rod  1   a  that projects out from an opening of the cylinder  1   b . The shock absorber  1  is a twin-tube shock absorber, and the cylinder  1   b  has an outer tube having a bottomed cylindrical shape forming an outer hull of the cylinder  1   b  and an inner tube (not shown) that is provided on the inner side of the outer tube. A piston (not shown) is linked to a lower end portion of the rod  1   a  for dividing an interior of the inner tube (not shown) into an extension-side chamber and a contraction-side chamber. 
     An end portion of the cylinder  1   b  on the opposite side from the rod  1   a  side is provided with a knuckle bracket  1   c  that links the shock absorber  1  and a knuckle (not shown) for holding the wheel. For the sake of convenience of description, the vertical direction is stated as illustrated in the figure such that the upper mount  2  side corresponds to the upper side of the suspension device  10  and the knuckle bracket  1   c  side corresponds to the lower side of the suspension device  10 . The vertical direction of the suspension device  10  corresponds to the axial direction (the center axial direction) of the suspension device  10  and to the extending/contracting direction of the shock absorber  1 . In addition, the radial direction of the suspension device  10  (the radial direction of the shock absorber  1 ) is orthogonal to the axial direction of the suspension device  10 . 
     The shock absorber  1  is assembled to the vehicle by being linked to the vehicle body via the upper mount  2  and by being linked to the knuckle by the knuckle bracket  1   c . The shock absorber  1  configured as described above is configured so as to generate the damping force when the rod  1   a  is moved in the axial direction (the vertical direction in  FIG. 1 ) relative to the cylinder  1   b . The suspension device  10  quickly attenuates the vibrations of the vehicle body by the damping force generated by the shock absorber  1 . 
     The coil spring  4  is provided between the spring guide  100 A and the upper mount  2 . The coil spring  4  is sandwiched by the spring guide  100 A and the upper mount  2  in a compressed state, thereby biasing the shock absorber  1  in the extending direction. 
     A rubber sheet  8  is provided between the upper mount  2  and an upper end portion the coil spring  4 . With such a configuration, the upper mount  2  is prevented from coming into direct contact with the coil spring  4 . An elastic part  103 A, which will be described below, is provided between a main body portion  101  of the spring guide  100 A and lower end portion of the coil spring  4 . With such a configuration, the main body portion  101  of the spring guide  100 A is prevented from coming into direct contact with the coil spring  4 . 
       FIG. 2  is a perspective view of the spring guide  100 A. As shown in  FIGS. 1 and 2 , the spring guide  100 A is a member that is attached to the outer circumference of the cylinder  1   b  to support the coil spring  4  from the below. The spring guide  100 A has the main body portion  101  formed of a resin material and the elastic part  103 A that is integrally molded on an upper surface of the main body portion  101 . 
     The main body portion  101  of the spring guide  100 A is provided with: a disc-shaped base portion  110  on which the lower end portion of the coil spring  4  is mounted; a cylindrical tube portion  112  that is formed so as to project upwards and downwards from the base portion  110 ; a side wall  111  that extends upwards at an incline from a radially-outside end portion of the base portion  110 ; and a hub  113  that is provided on the outer circumferential side of the tube portion  112 . The side wall  111  has an annular shape and is inclined such that the inner diameter is increased towards the upper side from the base portion  110 . 
     As shown in  FIG. 2 , the base portion  110  has a mounting region  110   c  that is set around the hub  113  of the spring guide  100 A. The mounting region  110   c  is an arc-shaped region on which the lower end portion of the coil spring  4  is mounted. An angle range of the mounting region  110   c  is set at an arbitrary angle of 180 degree or more. 
     The tube portion  112  has an insertion hole  120  that penetrates through the tube portion  112  in the axial direction of the suspension device  10  (the vertical direction) and through which the cylinder  1   b  of the shock absorber  1  is inserted. As shown in  FIG. 1 , the insertion hole  120  is formed at a position decentered from the center of the spring guide  100 A towards the side of the vehicle body when the spring guide  100 A is attached to the outer circumference of the cylinder  1   b.    
     As shown in  FIG. 2 , the insertion hole  120  is provided with ribs  122  serving as projected portions that are projected radially inward from an inner circumferential surface  121  of the insertion hole  120 . The ribs  122  function as supporting portions that support an outer circumferential surface of the cylinder  1   b  of the shock absorber  1 . The respective ribs  122  are provided so as to extend linearly along the axial direction of the insertion hole  120  (in other words, the axial direction of the suspension device  10 ). 
     The ribs  122  are each formed so as to have, for example, a rounded trapezoidal cross-sectional shape or a semicircular cross-sectional shape, and the ribs  122  come into line contact with the outer circumferential surface of the cylinder  1   b . A plurality of ribs  122  are arranged at equal intervals along the circumferential direction of the insertion hole  120 . Therefore, the spring guide  100 A is aligned such that the center axis of the insertion hole  120  coincides with the center axis of the cylinder  1   b.    
     The fitting between the cylinder  1   b  and the insertion hole  120 , specifically, the fitting between the cylinder  1   b  and the ribs  122  formed in the insertion hole  120  (see  FIG. 2 ) may be “a clearance fitting” or “an interference fitting”. By employing “the interference fitting”, rattling between the insertion hole  120  and the cylinder  1   b  is prevented, and so, it is possible to prevent generation of noise due to the rattling. In addition, it is also possible to improve responsibility of the operation of the suspension device  10 . 
     As shown in  FIG. 1 , a metallic support ring  3  is fixed to the outer circumferential surface of the cylinder  1   b  by being welded. The support ring  3  serves as a supporting portion for supporting the spring guide  100 A. The supporting portion may be formed by expanding the cylinder  1   b  without providing the support ring  3 . The spring guide  100 A is fixed to the outer circumference of the cylinder  1   b  by fitting the insertion hole  120  to the outer circumference of the cylinder  1   b  such that a lower end portion of the tube portion  112  of the spring guide  100 A is supported by the support ring  3 . 
     The spring guide  100 A is attached to the cylinder  1   b  by being fitted to the cylinder  1   b  from the above so as to come into contact with the support ring  3 . In other words, the cylinder  1   b  is inserted from a lower opening end  125 L of the insertion hole  120  of the spring guide  100 A. In other words, the lower opening end  125 L is an entrance from which the cylinder  1   b  is inserted, and an upper end portion of the cylinder  1   b  is projected out from an upper opening end  125 U that is an opening end on the opposite side from the lower opening end  125 L. 
     The hub  113  is provided so as to project upward from the base portion  110  at inside the coil spring  4 . The hub  113  has a bottomed cylindrical shape in which an upper portion  113   b  forms a bottom portion and an opening is formed on a lower portion. In order to increase rigidity of the hub  113 , a plurality of ribs are provided on the inner side of a tube portion  113   c  of the hub  113 . An outer circumference of the tube portion  113   c  of the hub  113  comes into contact with an inner circumference of the lower end portion of the coil spring  4 , thereby defining the position of the coil spring  4  in the radial direction. In other words, the hub  113  functions as a position defining part that defines the position of the lower end portion of the coil spring  4 . Because the lower end portion of the coil spring  4  is held by the hub  113 , an inclination (loss of perpendicularity) of the coil spring  4  is prevented. 
     The elastic part  103 A is formed of a material having elastic modulus that is lower than that of the resin material forming the main body portion  101  and is integrally molded with the main body portion  101  formed of the resin. As the material forming the elastic part  103 A, thermoplastic elastomers such as polyester elastomers, polyurethane elastomers, polyolefin elastomers, silicone elastomers, and so forth are employed. The material forming the elastic part  103 A is not limited to the thermoplastic elastomers, and thermosetting elastomers such as polyurethane rubber, silicone rubber, fluorocarbon rubber, and so forth may also be employed. Any materials may be employed as the material forming the elastic part  103 A as long as the material at least has the elastic modulus that is lower than that of the resin material forming the main body portion  101 . It is not limited to the elastomers, and the resin material may also be employed. 
     The elastic part  103 A is integrally molded on the main body portion  101  by using, for example, a two color molding. Although a material forming the main body portion  101  and a material forming the elastic part  103 A can be selected from various materials, it is preferable that the selection be performed in consideration of a combination of the materials that achieves a higher bonding strength between the material forming the main body portion  101  and the material forming the elastic part  103 A. 
     The spring guide described in JP2012-219825A has the configuration in which, when the rubber sheet is to be installed to the spring receiving member the rubber sheet is aligned by fitting the protruded portions thereof into the holes of the spring receiving member. In other words, in the spring guide described in JP2012-219825A, it is required to form recesses and projections for installing the rubber sheet to the spring receiving member. The recesses and projections that are formed on the spring receiving member may cause a bias in the stress acting on the spring receiving member. 
     In contrast, in this embodiment, because the elastic part  103 A is integrally molded with the main body portion  101 , and therefore, compared with the related art, it is possible to reduce a number of the recesses and projections on the main body portion  101 . As a result, it is possible to reduce the bias in the stress acting on the main body portion  101 . In addition, because installation works required when the elastic part  103 A is molded separately from the main body portion  101  can be omitted, it is possible to improve workability upon assembly of the suspension device  10 . 
     A region in which the elastic part  103 A is formed will be described with reference to  FIGS. 3A and 3B .  FIG. 3A  is a schematic plan view of the spring guide  100 A as viewed from above, the schematic plan view showing a shape of the spring guide  100 A in a simplified form and schematically showing the region in which the elastic part  103 A is formed with a hatched pattern.  FIG. 3B  is a side sectional view of the spring guide  100 A. 
     As shown in  FIGS. 3A and 3B , the elastic part  103 A is formed so as to cover the entire surface of an upper surface of the base portion  110  including the mounting region  110   c  and the entire surface of an upper surface (an inner surface) of the side wall  111 . The elastic part  103 A is formed so as to have a uniform thickness. 
     In this embodiment, the elastic part  103 A is formed on the mounting region  110   c . In addition, in this embodiment, the elastic part  103 A is formed not only on the mounting region  110   c , but also on the entire surface of the upper surface of the base portion  110  excluding the mounting region  110   c  and on the entire surface of the upper surface (the inner surface) of the side wall  111 . 
     In other words, the elastic part  103 A has: a first elastic sheet portion  131 A that is integrally molded on an annular-shaped region including the mounting region  110   c  in the base portion  110 ; and a second elastic sheet portion  132 A that is integrally molded on a radially-outside region of the mounting region  110   c  in the base portion  110  and on the side wall  111 . 
     Because the first elastic sheet portion  131 A is integrally molded on the mounting region  110   c , the lower end portion of the coil spring  4  is prevented from coming into direct contact with the main body portion  101 . Therefore, wearing of the main body portion  101  is prevented by the lower end portion of the coil spring  4  while the suspension device  10  is repeatedly undergoing the contraction and extension, and it is possible to improve a service life of the spring guide  100 A. In addition, when the lower end portion of the coil spring  4  is supported directly by the main body portion  101 , a noise may be caused between the lower end portion of the coil spring  4  and the main body portion  101 . In contrast, in this embodiment, because the first elastic sheet portion  131 A is provided between the lower end portion of the coil spring  4  and the main body portion  101  of the spring guide  100 A, it is possible to suppress the generation of the noise. 
     Furthermore, the second elastic sheet portion  132 A is integrally molded on the radially-outside region of the mounting region  110   c  in the base portion  110  and on the side wall  111 . Therefore, in the event of a breakage (a fracture) of the coil spring  4 , even if the broken part of the coil spring  4  (for example, a broken part of a fragment scattered at the time of the breakage of the coil spring  4 , and in a case in which the coil spring  4  is broken so as to be split into an upper part and a lower part, a broken part of a lower end of the upper coil spring  4 ) falls and lands on upper surfaces of the base portion  110  and the side wall  111 , it is possible to absorb an impact caused by the broken part with the second elastic sheet portion  132 A in the elastic part  103 A. Thus, the load acting on the main body portion  101  of the spring guide  100 A is dissipated. As a result, it is possible to effectively prevent the damage of the base portion  110  and the side wall  111  of the spring guide  100 A. 
     The entire surface of the upper surface of the base portion  110  and the entire surface of the upper surface (the inner surface) of the side wall  111  of the spring guide  100 A are covered by the elastic part  103 A. With such a configuration, it is also possible to prevent a damage of the main body portion  101  due to a collision of a flying stone, etc., whose colliding position being difficult to predict. 
     According to the above-described embodiment, following operational advantages are afforded. 
     In this embodiment, because the main body portion  101  of the spring guide  100 A is formed of the resin material, it is possible to achieve weight reduction compared with a case in which the main body portion  101  is formed of a metal material. In addition, the elastic part  103 A is integrally molded with the main body portion  101 , and thus, the spring guide  100 A is configured as a single part. Therefore, compared with a case in which the main body portion  101  and the elastic part  103 A are formed individually as separate parts and the elastic part  103 A is installed to the main body portion  101  by the fitting, for example, it is possible to reduce a number of parts constituting the spring guide  100 A. In other words, with this embodiment, it is possible to reduce the weight of the spring guide  100 A, and at the same time, it is possible to reduce the number of parts constituting the spring guide  100 A. 
     As a result, it is possible to provide the suspension device  10  with which the weight reduction is achieved without increasing the number of parts. 
     Modification of First Embodiment 
     In the above-described first embodiment, a description has been given of the spring guide  100 A in which the base portion  110  extends toward the outer side of the mounting region  110   c  in the radial direction and in which the side wall  111  extends upwards at an incline from the radially-outside end portion of the base portion  110  (see  FIGS. 2 and 3B ); however, the present invention is not limited thereto. It is possible to omit the side wall  111 . 
     As shown in  FIGS. 4A and 4B , in a spring guide  200 A according to this modification, a main body portion  201  has a circular base portion  210  having a width (the dimension in the radial direction) that is slightly wider than that of the mounting region  110   c . Here, the main body portion  201  does not have the side wall  111 , which is described in the first embodiment, at the radially-outside end portion of the base portion  210  (see  FIG. 3B ). In this modification, an elastic part  203 A is formed so as to cover the entire surface of an upper surface of the base portion  210  including the mounting region  110   c.    
     According to this modification, similarly to the above-described first embodiment, it is possible to reduce the number of parts constituting the spring guide  200 A. In addition, it is possible to further reduce the weight of the spring guide  200 A compared with the above-described first embodiment. 
     Second Embodiment 
     A spring guide  100 B according to a second embodiment of the present invention will be described with reference to  FIGS. 5A and 5B . In the following, differences from the above-mentioned first embodiment will be mainly described, and in the figures, components that are the same as or correspond to the components described in the above-mentioned first embodiment are assigned the same reference numerals and description thereof will be omitted. 
     In the above-described first embodiment, the elastic part  103 A is integrally molded on the base portion  110  and the side wall  111  (see  FIG. 3A ,  FIG. 3B ). In contrast, in this second embodiment, an elastic part  103 B is integrally molded not only on the base portion  110  and the side wall  111 , but also on the hub  113  and the tube portion  112 . The elastic part  103 B is formed with a circular through hole  135 B, and the cylinder  1   b  is inserted into the through hole  135 B. 
     The elastic part  103 B is formed so as to cover the entire surface of an upper surface of the hub  113  and the entire surface of an upper end surface of the tube portion  112 . As described above, in this second embodiment, the elastic part  103 B has: a first elastic sheet portion  131 B that is integrally molded on the mounting region  110   c  of the base portion  110 ; a second elastic sheet portion  132 B that is integrally molded on the radially-outside region of the mounting region  110   c  in the base portion  110  and on the side wall  111 ; and a third elastic sheet portion  133 B that is integrally molded on the hub  113  and the tube portion  112 . 
     The vehicle is used in various environments. For example, in a case in which the vehicle travels in an area with heavy snowfall, the suspension device  10  may come into contact with water containing snow-melting chemicals. The snow-melting chemicals typically contain calcium chloride. Therefore, if water containing calcium chloride enters a gap between the outer circumference of the cylinder  1   b  and the inner circumference of the insertion hole  120 , there is a risk in that the inner circumference of the insertion hole  120  is degraded and damaged. 
     The through hole  135 B formed in the third elastic sheet portion  133 B of the elastic part  103 B is formed such that the inner circumference portion thereof comes into contact with the outer circumference of the cylinder  1   b  over its entire circumference. The third elastic sheet portion  133 B of the elastic part  103 B closes the gap between the cylinder  1   b  and the insertion hole  120  of the tube portion  112  through which the cylinder  1   b  is inserted. Therefore, it is possible to prevent extraneous matters such as sand, water, and so forth from entering the gap between the cylinder  1   b  and the insertion hole  120  by the third elastic sheet portion  133 B of the elastic part  103 B. As a result, it is possible to prevent the degradation and damage due to the entrance of the extraneous matters into the gap between the outer circumference of the cylinder  1   b  and the inner circumference of the insertion hole  120 . 
     According to the second embodiment as described above, in addition to the operational advantages similar to those of the first embodiment, following operational advantages are afforded. 
     The third elastic sheet portion  133 B is integrally molded on the hub  113  and the tube portion  112  that are provided on the inner side of the coil spring  4 . Therefore, even if the coil spring  4  is broken (fractured) and a part of the broken coil spring  4  falls and lands on the upper surfaces of the hub  113  and the tube portion  112 , it is possible to absorb the impact caused by the broken part of the coil spring  4  with the third elastic sheet portion  133 B of the elastic part  103 B. Thus, the load acting on the main body portion  101  of the spring guide  100 B is dissipated. As a result, it is possible to prevent the damage of the hub  113  and the tube portion  112 . 
     In addition, because the entrance of the extraneous matters such as the sand, the water, and so forth into the gap between the cylinder  1   b  and the insertion hole  120  is prevented by the third elastic sheet portion  133 B of the elastic part  103 B, it is possible to prevent the degradation and damage of the cylinder  1   b.    
     The third elastic sheet portion  133 B of the elastic part  103 B also covers the entire surface of an outer circumferential surface of the tube portion  113   c  of the hub  113  that is positioned between the upper portion  113   b  of the hub  113  and the base portion  110 . With such a configuration, it is possible to suppress the wearing of the outer circumferential surface of the tube portion  113   c  of the hub  113  by the lower end portion of the coil spring  4 . 
     Modification of Second Embodiment 
     In the above-described second embodiment, a description has been given of the spring guide  100 B in which the base portion  110  extends toward the outer side of the mounting region  110   c  in the radial direction and in which the side wall  111  extends upwards at an incline from the radially-outside end portion of the base portion  110  (see  FIG. 5B ); however, the present invention is not limited thereto. It is possible to omit the side wall  111 . 
     As shown in  FIGS. 6A and 6B , in a spring guide  200 B according to this modification, in contrast to the main body portion  201  described in the modification of the above-described first embodiment (see  FIG. 4B ), similarly to the above-described second embodiment, an elastic part  203 B is integrally molded on the hub  113  and the tube portion  112 . 
     Third Embodiment 
     A spring guide  100 C according to a third embodiment of the present invention will be described with reference to  FIGS. 7A and 7B . In the following, differences from the above-mentioned second embodiment will be mainly described, and in the figures, components that are the same as or correspond to the components described in the above-mentioned second embodiment are assigned the same reference numerals and description thereof will be omitted. 
     In the above-described second embodiment, the thickness of the elastic part  103 B is uniform. In contrast, in the third embodiment, the thickness of an elastic part  103 C is not uniform. 
     When the coil spring  4  is broken, the part of the broken coil spring  4  tends to fall and land on the radially-outside region of the mounting region  110   c  than on the radially inner side of the mounting region  110   c . In addition, when the part of the broken coil spring  4  falls and lands on the spring guide  100 C, if a sharp portion of the broken part of the coil spring  4  comes into contact with the spring guide  100 C, an excessive impact force may act locally. 
     Thus, in this embodiment, the thickness t 2  of the second elastic sheet portion  132 C formed on the radially-outside region of the mounting region  110   c  is thicker than the thickness t 1  of the first elastic sheet portion  131 C formed on the mounting region  110   c  (i.e. t 2 &gt;t 1 ). With such a configuration, it is possible to absorb the impact caused by the broken part of the coil spring  4  with the second elastic sheet portion  132 C in a more suitable manner. 
     A third elastic sheet portion  133 C is formed with a through hole  135 C through which the cylinder  1   b  is inserted, and an inner circumference portion (a radially inner end portion) of the through hole  135 C comes into contact with the cylinder  1   b . With such a configuration, if the thickness of the third elastic sheet portion  133 C is too thick, there is a risk in that, when the spring guide  100 C is to be installed to the cylinder  1   b , it takes time and labor for the installation due to the frictional resistance between the inner circumference portion of the through hole  135 C and the outer circumference portion of the cylinder  1   b.    
     In this third embodiment, the thickness t 3  of the third elastic sheet portion  133 C formed on the hub  113  is thinner than the thickness t 1  of the first elastic sheet portion  131 C (i.e. t 3 &lt;t 1 ). With such a configuration, it is possible to reduce the frictional resistance between the inner circumference portion of the through hole  135 C of the third elastic sheet portion  133 C and the outer circumference portion of the cylinder  1   b  when the cylinder  1   b  is to be installed to the spring guide  100 C. As a result, it is possible to improve the workability upon the installation of the spring guide  100 C to the shock absorber  1 . 
     According to the third embodiment described above, the operational advantages similar to those of the above-described first embodiment are afforded. Furthermore, it is possible to more effectively absorb the impact force caused by the broken part of the coil spring  4  exerted to the radially-outside region of the mounting region  110   c , and at the same time, it is possible to improve the workability upon the installation of the spring guide  100 C to the shock absorber  1 . 
     Modification of Third Embodiment 
     In the above-described third embodiment, a description has been given of the spring guide  100 C in which the base portion  110  extends toward the outer side of the mounting region  110   c  in the radial direction and in which the side wall  111  extends upwards at an incline from the radially-outside end portion of the base portion  110  (see  FIG. 7B ); however, the present invention is not limited thereto. It is possible to omit the side wall  111 . 
     As shown in  FIGS. 8A and 8B , in a spring guide  200 C according to this modification, in contrast to the main body portion  201  described in the modification of the above-described first embodiment (see  FIG. 4B ), similarly to the above-described third embodiment, an elastic part  203 C having different thicknesses for the respective portions of the main body portion  201  is molded integrally. The elastic part  203 C has: the first elastic sheet portion  131 C having the thickness t 1  and that is integrally molded on the base portion  210 ; and the third elastic sheet portion  133 C having the thickness t 3  and that is integrally molded on the hub  113  and the tube portion  112 . 
     Fourth Embodiment 
     A spring guide  100 D according to a fourth embodiment of the present invention will be described with reference to  FIGS. 9A and 9B . In the following, differences from the above-mentioned second embodiment will be mainly described, and in the figures, components that are the same as or correspond to the components described in the above-mentioned second embodiment are assigned the same reference numerals and description thereof will be omitted. 
     In the above-described second embodiment, a description has been given of an example in which the elastic part  103 B is formed of a single type of material. In contrast, in the fourth embodiment, a plurality of partial elastic sheet portions (a first elastic sheet portion  131 D, a second elastic sheet portion  132 D, and a third elastic sheet portion  133 D) are formed of mutually different three types of materials, and an elastic part  103 D is constituted of three types of the partial elastic sheet portions. 
     The first elastic sheet portion  131 D is integrally molded on the annular-shaped region including the mounting region  110   c  in the base portion  110 . The second elastic sheet portion  132 D is integrally molded on the radially-outside region of the mounting region  110   c  in the base portion  110  and on the upper surface (the inner surface) of the side wall  111 . The third elastic sheet portion  133 D is integrally molded on the upper surface of the hub  113  and the upper end surface of the tube portion  112 . 
     The second elastic sheet portion  132 D is formed so as to cover the entire surface of the upper surface of the base portion  110  and the entire surface of the upper surface (the inner surface) of the side wall  111 . Therefore, in the event of a breakage (a fracture) of the coil spring  4 , even if the part of the broken coil spring  4  falls and lands on the upper surfaces of the base portion  110  and the side wall  111 , it is possible to absorb the impact caused by the broken part with the second elastic sheet portion  132 D. As a result, it is possible to prevent the damage of the base portion  110  and the side wall  111 . 
     In a case in which the material forming the second elastic sheet portion  132 D is the material having the elastic modulus lower than the material forming the first elastic sheet portion  131 D, in the event of the collision of the sharp portion of the broken part of the coil spring  4  with the second elastic sheet portion  132 D, the second elastic sheet portion  132 D may be deformed largely. Thus, the impact force is not sufficiently absorbed with the second elastic sheet portion  132 D and the impact force is transmitted to the main body portion  101  via the second elastic sheet portion  132 D, and there is a risk in that the main body portion  101  is damaged. 
     In contrast, in the fourth embodiment, the second elastic sheet portion  132 D is formed of the material having the elastic modulus higher than the material forming the first elastic sheet portion  131 D. Thus, even when the sharp portion of the broken part of the coil spring  4  collides with the second elastic sheet portion  132 D, the amount of deformation of the second elastic sheet portion  132 D is suppressed, and it is possible to effectively absorb the impact force with the second elastic sheet portion  132 D. Thus, even when the part of the broken coil spring  4  falls and lands on the base portion  110  and the side wall  111 , it is possible to more effectively prevent the damage of the base portion  110  and the side wall  111 . 
     The third elastic sheet portion  133 D is formed with a circular through hole  135 D, and the cylinder  1   b  is inserted through the through hole  135 D. The third elastic sheet portion  133 D is formed so as to cover the entire surface of the upper surface of the hub  113  and the entire surface of the upper end surface of the tube portion  112 . Therefore, in the event of a breakage (a fracture) of the coil spring  4 , even if a part of the broken coil spring  4  falls and lands on the upper surfaces of the hub  113  and the tube portion  112 , it is possible to absorb the impact caused by the broken part with the third elastic sheet portion  133 D. As a result, it is possible to prevent the damage of the hub  113  and the tube portion  112 . 
     The through hole  135 D of the third elastic sheet portion  133 D is formed such that the inner circumference portion thereof comes into direct contact with the outer circumference of the cylinder  1   b  over the entire circumference. The third elastic sheet portion  133 D closes the gap between the cylinder  1   b  and the insertion hole  120  of the tube portion  112  through which the cylinder  1   b  is inserted. With such a configuration, it is possible to prevent the extraneous matters such as the sand, the water, and so forth from entering the gap between the cylinder  1   b  and the insertion hole  120  by the third elastic sheet portion  133 D. Therefore, it is possible to prevent the degradation and damage due to the entrance of the extraneous matters into the gap between the outer circumference of the cylinder  1   b  and the inner circumference of the insertion hole  120 . 
     The third elastic sheet portion  133 D is formed of the material having the elastic modulus lower than the material forming the first elastic sheet portion  131 D. With such a configuration, even if the spring guide  100 D is displaced in the axial direction relative to the cylinder  1   b  when the shock absorber  1  is operated, the third elastic sheet portion  133 D suitably follows the outer circumference of the cylinder  1   b . Therefore, during the operation of the shock absorber  1 , a state in which the gap between the cylinder  1   b  and the insertion hole  120  is closed by the third elastic sheet portion  133 D is suitably maintained. With such a configuration, compared with a case in which the material forming the third elastic sheet portion  133 D has the elastic modulus higher than the material forming the first elastic sheet portion  131 D, it is possible to improve the seal performance between the outer circumference of the cylinder  1   b  and the inner circumference of the insertion hole  120 . 
     According to the fourth embodiment described above, the operational advantages similar to those of the second embodiment are afforded. Furthermore, it is possible to more effectively prevent the damage of the main body portion  101  caused by the collision of the broken part of the broken coil spring  4  with the radially-outside region of the mounting region  110   c . In addition, it is possible to further improve the seal performance between the outer circumference of the cylinder  1   b  and the inner circumference of the insertion hole  120 , and it is possible to more effectively prevent the degradation and damage due to the entrance of the extraneous matters into the gap between the outer circumference of the cylinder  1   b  and the inner circumference of the insertion hole  120 . 
     Modification of Fourth Embodiment 
     In the above-described fourth embodiment, a description has been given of the spring guide  100 D in which the base portion  110  extends toward the outer side of the mounting region  110   c  in the radial direction and in which the side wall  111  extends upwards at an incline from the radially-outside end portion of the base portion  110  (see  FIG. 9B ); however, the present invention is not limited thereto. It is possible to omit the side wall  111 . 
     As shown in  FIGS. 10A and 10B , in a spring guide  200 D according to this modification, in contrast to the main body portion  201  described in the modification of the above-described first embodiment (see  FIG. 4B ), similarly to the above-described fourth embodiment, the partial elastic sheet portions formed of different materials for the respective portions of the main body portion  201  are molded integrally. An elastic part  203 D that is integrally molded on the main body portion  201  has the first elastic sheet portion  131 D integrally molded on the base portion  210  and the third elastic sheet portion  133 D integrally molded on the hub  113  and the tube portion  112 . The third elastic sheet portion  133 D is formed of the material having the elastic modulus lower than the material forming the first elastic sheet portion  131 D. 
     Following modifications also fall within the scope of the present invention, and it is also possible to combine the configurations shown in the modifications with the configurations described in the above-described embodiments, to combine the configurations described in the above-described different embodiments, and to combine the configurations described in the following different modifications. 
     &lt;First Modification&gt; 
     For example, the configuration described in the third embodiment described above may be combined with the configuration described in the fourth embodiment described above. As shown in  FIGS. 11A and 11B , an elastic part  103 E of a spring guide  100 E according to this modification has: a first elastic sheet portion  131 E having the thickness t 1  that is integrally molded on an annular-shaped region including the mounting region  110   c ; a second elastic sheet portion  132 E having the thickness t 2  that is integrally molded on the radially-outside region of the mounting region  110   c  and on the upper surface (the inner surface) of the side wall  111 ; and a third elastic sheet portion  133 E having the thickness t 3  that is integrally molded on the hub  113  and the tube portion  112 . The size relationship between the thicknesses t 1 , t 2 , and t 3  is t 3 &lt;t 1 &lt;t 2 . In addition, the elastic modulus of the second elastic sheet portion  132 E is higher than the elastic modulus of the first elastic sheet portion  131 E, and the elastic modulus of the third elastic sheet portion  133 E is lower than the elastic modulus of the first elastic sheet portion  131 E. According to such a modification, the operational advantages similar to those of the third embodiment and the fourth embodiment described above are afforded. 
     In this modification and the above-described third embodiment, a description has been given of an example in which the size relationship between the thicknesses t 1 , t 2 , and t 3  is t 3 &lt;t 1 &lt;t 2 ; however, the present invention is not limited thereto. The size relationship between the thicknesses t 1 , t 2 , and t 3  can be changed appropriately in accordance with a specification of the suspension device  10 . For example, the thickness t 3  of the third elastic sheet portion  133 C may be thicker than the thickness t 1  of the first elastic sheet portion  131 C. In this case, it is possible to effectively absorb the impact force caused by the broken part of the coil spring  4  falling and landing on the upper surfaces of the hub  113  and the tube portion  112  and to effectively prevent the damage of the hub  113  and the tube portion  112 . 
     In addition, the thickness t 1  of the first elastic sheet portion  131 C may be thicker than the thickness t 2  of the second elastic sheet portion  132 C. The thickness t 1  of the first elastic sheet portion  131 C affects on a ride quality of the vehicle on which the suspension device  10  is mounted. By increasing the thickness t 1  of the first elastic sheet portion  131 C, in a state in which the coil spring  4  is not broken and elastically supports the vehicle body normally, it is possible to sufficiently absorb the force acting on the coil spring  4  from the road surface with the first elastic sheet portion  131 C. Thus, it is possible to improve the ride quality of the vehicle on which the suspension device  10  is mounted. 
     In the above, it is preferable that the thickness t 2  of the second elastic sheet portion  132 C be set at or higher than the thickness that allows suitable absorption of the impact caused by a fragmented portion of the coil spring  4 . With such a configuration, it is possible to improve the ride quality of the vehicle on which the suspension device  10  is mounted and to absorb the impact caused by the broken part of the coil spring  4  with the second elastic sheet portion  132 C. 
     In the above, the thickness t 1  of the first elastic sheet portion  131 C may not be uniform, and the thickness may be different from place to place. In other words, the size relationship between the thickness t 1  of the first elastic sheet portion  131 C and the thickness t 2  of the second elastic sheet portion  132 C may be different from place to place in the first elastic sheet portion  131 C. For example, the thickness t 1  of the first elastic sheet portion  131 C may be changed such that the first elastic sheet portion  131 C is formed so as to follow along a shape of the end portion of the coil spring  4  that is seated on the first elastic sheet portion  131 C. With such a configuration, it is possible to mount the coil spring  4  stably. 
     &lt;Second Modification&gt; 
     In addition, the configuration described in the modification of the third embodiment described above may be combined with the configuration described in the modification of the fourth embodiment described above. As shown in  FIGS. 12A and 12B , an elastic part  203 E of a spring guide  200 E according to this modification has: the first elastic sheet portion  131 E having the thickness t 1  and that is integrally molded on the annular-shaped region including the mounting region  110   c  and the third elastic sheet portion  133 E having the thickness t 3  and that is integrally molded on the hub  113  and the tube portion  112 . The size relationship between the thicknesses t 1  and t 3  is t 3 &lt;t 1 . In addition, the elastic modulus of the third elastic sheet portion  133 E is lower than the elastic modulus of the first elastic sheet portion  131 E. 
     In this modification and the above-described fourth embodiment, a description has been given of an example in which the elastic modulus of the second elastic sheet portion  132 D is higher than the elastic modulus of the first elastic sheet portion  131 D, and the elastic modulus of the third elastic sheet portion  133 D is lower than the elastic modulus of the first elastic sheet portion  131 D; however, the present invention is not limited thereto. The magnitude relationship of the elastic modulus can be changed appropriately in accordance with the specification of the suspension device  10 . For example, the elastic modulus of the third elastic sheet portion  133 D may be higher than the elastic modulus of the first elastic sheet portion  131 C. In this case, it is possible to effectively absorb the impact force caused by the broken part of the coil spring  4  falling and landing on the upper surfaces of the hub  113  and the tube portion  112  and to effectively prevent the damage of the hub  113  and the tube portion  112 . 
     In addition, the elastic modulus of the first elastic sheet portion  131 D may be higher than the elastic modulus of the second elastic sheet portion  132 D. The elastic modulus of the first elastic sheet portion  131 D affects the ride quality of the vehicle on which the suspension device  10  is mounted. By increasing the elastic modulus of the first elastic sheet portion  131 D, it is possible to sufficiently absorb the impact acting on the coil spring  4  with the first elastic sheet portion  131 D. Thus, it is possible to improve the ride quality of the vehicle on which the suspension device  10  is mounted. In addition, the elastic modulus of the third elastic sheet portion  133 D may be higher than the elastic modulus of the second elastic sheet portion  132 D. The elastic modulus of all of the first elastic sheet portion  131 D, the second elastic sheet portion  132 D, and the third elastic sheet portion  133 D may be the same. 
     &lt;Third Modification&gt; 
     As shown in  FIG. 13 , a seating portion  140  on which the lower end portion of the coil spring  4  seats may be formed on an elastic part  103 F. The seating portion  140  has a curved surface that is curved such that its cross-section follows along the cross-sectional shape of the coil spring  4 . The seating portion  140  prevents an outward positional displacement of the lower end portion of the coil spring  4  in the radial direction. With such a configuration, it is possible to hold the coil spring  4  by a spring guide  100 F more stably. 
     &lt;Fourth Modification&gt; 
     A description has been given of an example in which the base portion  110 ,  210  of the main body portion  101 ,  201  has a disc shape; however, the present invention is not limited thereto. The base portion  110 ,  210  may be a plate having a polygonal shape. 
     &lt;Fifth Modification&gt; 
     As shown in  FIG. 14 , a lip  136  provided in a through hole  135 G formed in a third elastic sheet portion  133 G may be brought into contact with the outer circumference of the cylinder  1   b . In other words, the third elastic sheet portion  133 G may have the lip  136  that is in contact with the outer circumference of the cylinder  1   b  of the shock absorber  1 . The lip  136  is provided so as to project from the third elastic sheet portion  133 G towards the center side of the through hole  135 G. The lip  136  is provided over the entire circumference of the through hole  135 G. The lip  136  closes the gap between the cylinder  1   b  and the insertion hole  120  of the tube portion  112  through which the cylinder  1   b  is inserted. 
     By providing the lip  136 , similarly to the second embodiment, it is possible to prevent the degradation and damage due to the entrance of the extraneous matters into the gap between the outer circumference of the cylinder  1   b  and the inner circumference of the insertion hole  120 . 
     In addition, with the second embodiment, because the gap between the cylinder  1   b  and the insertion hole  120  is closed over the entire inner circumferential surface of the third elastic sheet portion  133 B, an interference is formed on an inner circumferential surface of the third elastic sheet portion  133 B for the cylinder  1   b . Thus, when the cylinder  1   b  is inserted into the insertion hole  120 , a strained force fastening the cylinder  1   b  is generated by the interference of the third elastic sheet portion  133 B. The larger the thickness of the third elastic sheet portion  133 B is, the larger the strained force becomes. Because the third elastic sheet portion  133 B has a relatively large thickness and the region in the axial direction for pressing the cylinder  1   b  is large, the third elastic sheet portion  133 B becomes more resistant to be moved relative to the cylinder  1   b  due to the large strained force. Thus, there is a risk in that, when the cylinder  1   b  is to be inserted into the insertion hole  120 , a large force is applied to the third elastic sheet portion  133 B, and so, the third elastic sheet portion  133 B is delaminated from the hub  113 . 
     In contrast, in this modification, the gap between the cylinder  1   b  and the insertion hole  120  is closed by the lip  136 , but not by the third elastic sheet portion  133 G. With such a configuration, the region in the axial direction at which the third elastic sheet portion  133 G presses the cylinder  1   b  can be made smaller compared with the second embodiment, and so, the third elastic sheet portion  133 G can be moved relative to the cylinder  1   b  with ease. Thus, the force applied to the third elastic sheet portion  133 G when the cylinder  1   b  is to be inserted through the insertion hole  120  is reduced, and so, it is possible to suppress the delamination between the third elastic sheet portion  133 G and the hub  113 . The third elastic sheet portion  133 G may be the third elastic sheet portion  133 B,  133 C,  133 D,  133 E,  133 F. 
     The configurations, operations, and effects of the embodiments of the present invention configured as described above will be collectively described. 
     The spring guide  100 A,  100 B,  100 C,  100 D,  100 E,  100 F,  200 A,  200 B,  200 C,  200 D,  200 E is attached to the shock absorber  1 , the shock absorber  1  being provided between the vehicle body and the wheel, the spring guide being configured to support the coil spring  4  for elastically supporting the vehicle body, the spring guide including: the main body portion  101 ,  201  formed of the resin material; and the elastic part  103 A,  103 B,  103 C,  103 D,  103 E,  103 F,  203 A,  203 B,  203 C,  203 D,  203 E provided between the main body portion  101 ,  201  and the end portion of the coil spring  4 , wherein the elastic part  103 A,  103 B,  103 C,  103 D,  103 E,  103 F,  203 A,  203 B,  203 C,  203 D,  203 E is formed of the material having the elastic modulus lower than the material forming the main body portion  101 ,  201 , the elastic part being integrally molded on the main body portion  101 ,  201 . 
     In this configuration, because the main body portion  101 ,  201  of the spring guide  100 A,  100 B,  100 C,  100 D,  100 E,  100 F,  200 A,  200 B,  200 C,  200 D,  200 E is formed of the resin material, it is possible to achieve weight reduction compared with a case in which the main body portion  101 ,  201  is formed of the metal material. In addition, because the elastic part  103 A,  103 B,  103 C,  103 D,  103 E,  103 F,  203 A,  203 B,  203 C,  203 D,  203 E is integrally molded on the main body portion  101 ,  201 , it is possible to reduce the number of parts compared with a case in which the main body portion  101 ,  201  and the elastic part  103 A,  103 B,  103 C,  103 D,  103 E,  103 F,  203 A,  203 B,  203 C,  203 D,  203 E are formed individually as separate parts. 
     In the spring guide  100 A,  100 B,  100 C,  100 D,  100 E,  100 F, the main body portion  101  has: the disc-shaped base portion  110  having the mounting region  110   c  for mounting the coil spring  4 ; and the side wall  111  extending upwards from the radially-outside end portion of the base portion  110 , and wherein the elastic part  103 A,  103 B,  103 C,  103 D,  103 E,  103 F has: the first elastic sheet portion  131 A,  131 B,  131 C,  131 D,  131 E integrally molded on the mounting region  110   c  in the base portion  110 ; and the second elastic sheet portion  132 A,  132 B,  132 C,  132 D,  132 E integrally molded on the radially-outside region of the mounting region  110   c  in the base portion  110  and on the side wall  111 . 
     In this configuration, the second elastic sheet portion  132 A,  132 B,  132 C,  132 D,  132 E is integrally molded on the radially-outside region of the mounting region  110   c  in the base portion  110  and on the side wall  111 . Therefore, even if the coil spring  4  is broken and the part of the broken coil spring  4  falls and lands on the base portion  110  and the side wall  111 , the impact caused by the broken part of the coil spring  4  can be absorbed with the second elastic sheet portion  132 A,  132 B,  132 C,  132 D,  132 E, and therefore, it is possible to effectively prevent the damage of the base portion  110  and the side wall  111  of the spring guide  100 A,  100 B,  100 C,  100 D,  100 E,  100 F. 
     In the spring guide  100 C, the thickness t 1  of the first elastic sheet portion  131 C is thicker than the thickness t 2  of the second elastic sheet portion  132 C. 
     In this configuration, in a state in which the coil spring  4  is not broken and elastically supports the vehicle body normally, it is possible to sufficiently absorb the force acting on the coil spring  4  from the road surface with the first elastic sheet portion  131 C. Thus, it is possible to improve the ride quality of the vehicle on which the suspension device  10  is mounted. 
     In the spring guide  100 C,  100 E, the thickness t 2  of the second elastic sheet portion  132 C,  132 E is thicker than the thickness t 1  of the first elastic sheet portion  131 C,  131 E. 
     In the spring guide  100 D,  100 E, the second elastic sheet portion  132 D,  132 E is formed of the material having the elastic modulus higher than the material forming the first elastic sheet portion  131 D,  131 E. 
     With these configurations, even when the part of the broken coil spring  4  falls and lands on the base portion  110  and the side wall  111 , it is possible to more effectively prevent the damage of the base portion  110  and the side wall  111 . 
     In the spring guide  100 B,  100 C,  100 D,  100 E,  100 F,  200 B,  200 C,  200 D,  200 E, the main body portion  101 ,  201  has the disc-shaped base portion  110 ,  210  configured to mount the lower end portion of the coil spring  4 ; and the position defining part (the hub  113 ) provided on the inner side of the coil spring  4  so as to project out from the base portion  110 ,  210 , the position defining part being configured to define the position of the lower end portion of the coil spring  4 , and wherein the elastic part  103 B,  103 C,  103 D,  103 E,  103 F,  203 B,  203 C,  203 D,  203 E has: the first elastic sheet portion  131 B,  131 C,  131 D,  131 E integrally molded on the base portion  110 ,  210 ; and the third elastic sheet portion  133 B,  133 C,  133 D,  133 E integrally molded on the position defining part (the hub  113 ). 
     In this configuration, the third elastic sheet portion  133 B,  133 C,  133 D,  133 E is integrally molded on the position defining part (the hub  113 ) that is provided on the inner side of the coil spring  4 . Therefore, even if the coil spring  4  is broken and the part of the broken coil spring  4  falls and lands on the position defining part (the hub  113 ), the impact caused by the broken part of the coil spring  4  can be absorbed with the third elastic sheet portion  133 B,  133 C,  133 D,  133 E, and therefore, it is possible to effectively prevent the damage of the position defining part (the hub  113 ) of the spring guide  100 B,  100 C,  100 D,  100 E,  100 F,  200 B,  200 C,  200 D,  200 E. 
     In the spring guide  100 B,  100 C,  100 D,  100 E,  100 F,  200 B,  200 C,  200 D,  200 E, the main body portion  101 ,  201  has the cylindrical tube portion  112  through which the cylinder  1   b  of the shock absorber  1  is inserted, and the third elastic sheet portion  133 B,  133 C,  133 D,  133 E is configured to close the gap between the cylinder  1   b  and the insertion hole  120  of the tube portion  112  through which the cylinder  1   b  is inserted. 
     In this configuration, it is possible to prevent the extraneous matters such as the sand, the water, and so forth from entering the gap between the cylinder  1   b  and the insertion hole  120  by the third elastic sheet portion  133 B,  133 C,  133 D,  133 E. 
     In the spring guide  100 B,  100 C,  100 D,  100 E,  100 F,  200 B,  200 C,  200 D,  200 E, the third elastic sheet portion  133 B,  133 C,  133 D,  133 E,  133 F has the lip  136 , the lip  136  being configured to close the gap between the cylinder  1   b  and the insertion hole  120  by being brought into contact with the cylinder  1   b  of the shock absorber  1 . 
     In this configuration, when the cylinder  1   b  is to be inserted through the insertion hole  120 , a less force is applied to the third elastic sheet portion  133 B,  133 C,  133 D,  133 E,  133 F in the insertion direction of the cylinder  1   b . Thus, it is possible to suppress the delamination between the third elastic sheet portion  133 B,  133 C,  133 D,  133 E,  133 F and the hub  113 . 
     In the spring guide  100 C,  100 E,  200 C,  200 E, the thickness t 3  of the third elastic sheet portion  133 C,  133 E is thinner than the thickness t 1  of the first elastic sheet portion  131 C,  131 E. 
     In this configuration, when the cylinder  1   b  is installed to the spring guide  100 C,  100 E,  200 C,  200 E, it is possible to reduce the frictional resistance between the third elastic sheet portion  133 C,  133 E and the outer circumference portion of the cylinder  1   b . As a result, it is possible to improve the workability upon the installation of the spring guide  100 C,  100 E for the shock absorber  1 . 
     In the spring guide  100 D,  100 E,  200 D,  200 E, the third elastic sheet portion  133 D,  133 E is formed of the material having the elastic modulus lower than the material forming the first elastic sheet portion  131 D,  131 E. 
     In this configuration, even if the spring guide  100 D,  100 E,  200 D,  200 E is displaced in the axial direction relative to the cylinder  1   b  when the shock absorber  1  is operated, it is possible to make the third elastic sheet portion  133 D,  133 E to suitably follow the outer circumference of the cylinder  1   b , and so, it is possible to close the gap between the cylinder  1   b  and the insertion hole  120  by the third elastic sheet portion  133 D,  133 E. 
     The suspension device  10  includes: the above-described spring guide  100 A,  100 B,  100 C,  100 D,  100 E,  100 F,  200 A,  200 B,  200 C,  200 D,  200 E; the shock absorber  1 ; the upper mount  2  attached to a tip end of the rod  1   a  of the shock absorber  1 ; the coil spring  4  provided between the spring guide  100 A,  100 B,  100 C,  100 D,  100 E,  100 F,  200 A,  200 B,  200 C,  200 D,  200 E and the upper mount  2 ; and the metallic supporting portion (the support ring  3 ) fixed to the cylinder  1   b  of the shock absorber  1 , the supporting portion being configured to support the spring guide  100 A,  100 B,  100 C,  100 D,  100 E,  100 F,  200 A,  200 B,  200 C,  200 D,  200 E. 
     In this configuration, because the above-described spring guide  100 A,  100 B,  100 C,  100 D,  100 E,  100 F,  200 A,  200 B,  200 C,  200 D,  200 E is provided, it is possible to provide the suspension device  10  with which the weight reduction is achieved without increasing the number of parts constituting. 
     Embodiments of the present invention were described above, but the above embodiments are merely examples of applications of the present invention, and the technical scope of the present invention is not limited to the specific constitutions of the above embodiments. 
     With respect to the above description, the contents of application No. 2019-095069, with a filing date of May 21, 2019 in Japan, are incorporated herein by reference.