JP2019152315A - Spring seat and suspension attachment structure - Google Patents

Abstract

To provide a spring seat which achieves excellent corrosion resistance and can prevent entry of high pressure water into a bearing when a vehicle is washed with a high pressure car wash machine, and to provide a suspension attachment structure.SOLUTION: A suspension attachment structure 1 includes: a spring seat 2 supporting an upper end part 520 of a coil spring 52; an upper mount 3 for attaching a piston rod 50 to a vehicle body 6; and a bearing 4 which is disposed between the spring seat 2 and the upper mount 3 and allows relative rotation therebetween. The spring seat 2 is made of synthetic resin and has: a spring seat body 20 in which a support surface for supporting the upper end part 520 of the coil spring 52 is formed on a lower surface and the upper surface side of an outer peripheral surface is enclosed by an outer edge part 310 of a cover part 31 of the upper mount 3; and a flange part 22 which is formed on the outer peripheral surface of the spring seat body 20 and protrudes to the radial outer side further than the outer edge part 310 of the cover part 31 of the upper mount 3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a structure for mounting a vehicle suspension to a vehicle body, and more particularly to a spring seat that supports an upper end portion of a coil spring of a vehicle suspension.

  Patent Document 1 discloses a vehicle suspension structure that can protect components such as bearings from muddy water. The vehicle suspension structure includes a shock absorber having a piston rod, a coil spring that rotates relative to the piston rod by a steering operation, a spring seat (upper seat) that supports the upper end of the coil spring, and a piston. An upper mount (upper support) for attaching the rod to the vehicle body and a bearing disposed between the spring seat and the upper mount and allowing relative rotation of both are provided. As a result, the vehicle suspension structure supports the load while allowing relative rotation between the piston rod and the coil spring.

  Here, the spring seat is generally an annular plate made of metal, and a folded portion that protrudes from the lower surface and forms an annular groove on the upper surface is formed so as to surround the shock absorber for increasing the strength. And the drain hole is formed in the bottom part of this annular groove.

  Further, the upper mount is generally a cylindrical member made of rubber, and at the lower end thereof, a gap is provided in the thrust direction with respect to the spring seat so as to cover the inner peripheral region on the upper surface of the spring seat. An umbrella-shaped cover part (an inner cylinder part of the upper support) is formed. And the annular protrusion part which a front-end | tip is located in a radial direction outer side than the outer diameter of the annular groove of a spring seat is provided in the outer edge part of the cover part.

  In the vehicle suspension structure configured as described above, the muddy water that has entered the upper surface side of the cover portion of the upper mount flows on the upper surface of the cover portion radially outward and moves from the outer edge portion of the cover portion to the annular protrusion. . Then, it flows downward from the annular protrusion. At this time, since the tip of the annular protrusion is positioned radially outward from the outer diameter of the annular groove of the spring seat, the muddy water that has flowed downward from the annular protrusion is placed in the annular groove of the spring seat. Without intrusion, it flows down outside the annular groove of the spring seat. Moreover, even if it enters into the annular groove of the spring seat, it flows downward from the drain hole formed in the bottom of the annular groove. For this reason, according to the suspension structure for vehicles described in patent document 1, components, such as a bearing, can be protected from muddy water.

JP 2006-2996 A

  Conventionally, high-pressure car wash machines that inject high-pressure water from a nozzle attached to the tip of a hose have become widespread. The user can wash the car by operating the nozzle and injecting high-pressure water to the site where the dirt is to be removed. Here, in order to remove dirt in the tire house, the user may inject high-pressure water into the tire house with the nozzle facing upward from near the ground. In this case, in the vehicle suspension structure described in Patent Document 1, the high-pressure water that has entered the tire house from the vicinity of the ground upwards changes the direction in which the high-pressure water hits the ceiling of the tire house, and the upper mount and the spring seat There is a possibility of entering the annular groove of the spring seat from the gap. Here, if the amount of drainage from the drain hole of the annular groove is less than the amount of high-pressure water entering the annular groove, water overflows from the annular groove and enters the bearing, reducing the sliding performance of the bearing. . On the other hand, if the drain hole of the annular groove is enlarged in order to improve the drainage of the water accumulated in the annular groove, the strength required for the spring seat may not be obtained.

  Further, in the vehicle suspension structure described in Patent Document 1, since the spring seat is generally made of metal, the surface is coated with rust-proof coating. May cause rust and corrosion.

  The present invention has been made in view of the above circumstances, and a purpose thereof is a spring that is excellent in corrosion resistance and can prevent high-pressure water from entering a bearing during car washing using a high-pressure car wash machine. An object is to provide a seat and a suspension mounting structure using the spring seat.

  In order to solve the above problems, in the present invention, a spring seat disposed in a thrust direction with a bearing in a thrust direction with a bearing is made of synthetic resin, and the upper end of the coil spring is formed on the lower surface. A flange that protrudes radially outward from the outer edge portion of the upper mount is provided on the outer peripheral surface of the annular spring seat body in which the support surface for supporting the upper portion is formed and the upper surface side of the outer peripheral surface is surrounded by the outer edge portion of the upper mount It was. Here, the flange is a tire in which an angle α formed by a line segment passing through the outer edge of the upper surface of the flange and the lower edge of the outer edge of the upper mount and a perpendicular is injected from the nozzle during car washing using a high-pressure car wash machine. It is preferable to set the outer diameter of the flange so as to be larger than the angle β formed between the assumed injection direction of the high-pressure water entering the house and the perpendicular.

For example, the spring seat of the present invention is
A spring seat made of a synthetic resin that is rotatably arranged relative to an upper mount for attaching the piston rod of the suspension to the vehicle body by a bearing, and supports the upper end of the coil spring of the suspension,
The upper surface is arranged with a gap in the thrust direction with respect to the upper mount, the upper surface side of the outer peripheral surface is surrounded by the outer edge portion of the upper mount, and a support surface for supporting the upper end portion of the coil spring is formed on the lower surface An annular spring seat body,
A flange formed on the outer peripheral surface of the spring seat main body and projecting radially outward from the outer edge portion of the upper mount.

The suspension mounting structure of the present invention is
A suspension mounting structure for mounting a suspension having a piston rod and a coil spring that rotates relative to the piston rod by a steering operation to a vehicle body,
A cylindrical upper mount for attaching the piston rod to the vehicle body;
The above-described spring seat that supports the upper end of the coil spring;
A bearing disposed between the upper mount and the spring seat to allow relative rotation of both; and
The upper mount is
A cover portion formed at a lower end portion of the upper mount and provided with a gap in a thrust direction with respect to the upper surface of the spring seat body so as to cover the upper surface of the spring seat body of the spring seat. And
The outer edge of the cover part is
The outer edge portion of the upper mount surrounds the upper surface side of the outer peripheral surface of the spring seat body.

  In the present invention, since the spring sheet is made of synthetic resin, the corrosion resistance can be improved as compared with the metal spring sheet. Also, a support surface for supporting the upper end of the coil spring is formed on the lower surface, and the upper surface side of the outer peripheral surface is surrounded by the outer edge portion of the upper mount on the outer peripheral surface of the annular spring seat body, more radially than the outer edge portion of the upper mount. The flange that protrudes outward is provided, so that when high pressure car wash is used, high pressure water that is injected from the nozzle into the tire house and goes to the gap between the upper mount and the spring seat is blocked by this flange. Can do. In addition, since the upper surface of the outer peripheral surface of the spring seat body is surrounded by the outer edge of the upper mount, the high pressure water that has entered the tire house upward from near the ground changes the direction in which it travels against the ceiling of the tire house, changing the upper Even when the gap between the outer edge of the mount and the flange of the spring seat is reached, this high-pressure water can be blocked by the outer peripheral surface of the spring seat body.

  Therefore, according to the present invention, it is excellent in corrosion resistance and can prevent high pressure water from entering a bearing disposed between the upper mount and the spring seat during car washing using a high pressure car wash machine. it can.

FIG. 1 is a schematic cross-sectional view of a suspension mounting structure 1 according to an embodiment of the present invention. FIG. 2 is an enlarged view of part A of the suspension mounting structure 1 shown in FIG. 3A and 3B are a plan view and a bottom view of the spring seat 2, and FIG. 3C is a cross-sectional view taken along the line BB of the spring seat 2 shown in FIG. . 4 (A) and 4 (B) are a plan view and a bottom view of the upper mount 3, and FIG. 4 (C) is a cross-sectional view of the upper mount 3 shown in FIG. . 5A, 5B, and 5C are a plan view, a bottom view, and a front view of the bearing 4, and FIG. 5D is a view of the bearing 4 shown in FIG. It is DD sectional enlarged view.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic cross-sectional view of a suspension mounting structure 1 according to an embodiment of the present invention. FIG. 2 is an enlarged view of a portion A of the suspension mounting structure 1 shown in FIG.

  As shown in the figure, the suspension mounting structure 1 according to the present embodiment is disposed so as to surround a shock absorber 51 having a piston rod 50, a coil spring 52 disposed so as to surround the shock absorber 51, and the shock absorber 51. A vehicle strut suspension 5 having a bump stopper 53 is attached to the vehicle body 6. The spring seat 2 that supports the upper end 520 of the coil spring 52 and the piston rod 50 are attached to the vehicle body 6. An upper mount 3 for mounting and a bearing 4 disposed between the spring seat 2 and the upper mount 3 and allowing relative rotation of both are provided.

  3A and 3B are a plan view and a bottom view of the spring seat 2, and FIG. 3C is a cross-sectional view taken along the line BB of the spring seat 2 shown in FIG. .

  The spring sheet 2 is formed of a high-strength synthetic resin such as polyamide resin, polypropylene resin, polyacetal resin, polybutylene terephthalate resin reinforced with glass fiber, glass powder, carbon fiber, etc. The sheet main body 20, a cylindrical accommodating portion 21, and a flange portion 22 are included.

  The spring seat body 20 includes an upper surface 200 on which an annular mounting surface 201 on which the bearing 4 is mounted is formed, and a lower surface 202 on which a support surface 203 that supports the upper end portion 520 of the coil spring 52 is formed.

  The mounting surface 201 protrudes from the upper surface 200 of the spring seat main body 20 positioned around the mounting surface 201, and thereby, between the upper surface 200 of the spring seat main body 20 positioned around the mounting surface 201. A step surface 208 is formed on the surface. A mounting hole 204 for mounting the bearing 4 is formed in the center of the mounting surface 201 so as to penetrate the lower surface 202 so that the accommodating portion 21 and the shaft center O coincide with each other.

  A plurality of guide grooves 206 along the axis O are formed at equal intervals in the circumferential direction on the inner peripheral surface 205 of the mounting hole 204. A rotation stopper 414 (see FIG. 5), which will be described later, of the bearing 4 is inserted into the guide groove 206. In FIG. 3, only some of the guide grooves 206 are denoted by reference numerals.

  The accommodating portion 21 is formed on the lower surface 202 of the spring seat body 20 and accommodates the upper end portion 530 of the bump stopper 53 of the strut suspension 5 (see FIG. 1). A plurality of protrusions 211 projecting inward are formed on the inner peripheral surface 210 of the housing portion 21 at equal intervals in the circumferential direction. The protrusion 211 presses and fixes the upper end 530 of the bump stopper 53 accommodated in the accommodating portion 21 inward in the radial direction. In FIG. 3, only some of the protrusions 211 are denoted by reference numerals.

  The flange portion 22 is formed on the outer peripheral surface 207 of the spring seat body 20 and protrudes radially outward from an outer edge portion 310 of a cover portion 31 (described later) of the upper mount 3 (see FIG. 1). The upper surface 220 of the flange portion 22 is inclined toward the lower surface 202 of the spring seat body 20 as it goes outward in the radial direction. The lower surface 221 of the flange portion 22 is located on the upper surface 200 side of the spring seat main body 20 with respect to the support surface 203 of the spring seat main body 20, whereby a step surface 222 is formed between the lower surface 221 and the support surface 203.

  As shown in FIG. 2, the outer diameter r of the flange portion 22 of the spring seat 2 is equal to the outer edge end 223 of the upper surface 220 of the flange portion 22 and the outer edge portion 310 of the cover portion 31 described later of the upper mount 3 in the suspension mounting structure 1. The angle α formed between the line segment L passing through the lower end (the lower end on the outer peripheral surface side) 311 and the vertical line V is the edge (not shown) of the fender of the vehicle employing this suspension mounting structure 1 and the upper surface 220 of the flange 22. Line segment passing through the outer edge 223 of the vehicle, that is, high-pressure water P which is injected from the nozzle of the high-pressure car wash machine and enters the tire house of the vehicle at the time of car washing using the high-pressure car wash machine of the vehicle employing the suspension mounting structure Is set to be larger than an angle β formed by the assumed injection direction and the perpendicular V. Specifically, the angle β formed varies depending on the type and size of the vehicle that employs the suspension mounting structure 1, but falls within a range of 30 to 60 degrees in the case of a normal automobile. For this reason, the outer diameter r of the flange portion 22 is set so that the formed angle α is at least 30 degrees, preferably 45 degrees or more, more preferably 60 degrees or more.

  4 (A) and 4 (B) are a plan view and a bottom view of the upper mount 3, and FIG. 4 (C) is a cross-sectional view of the upper mount 3 shown in FIG. .

  The upper mount 3 is made of an elastic member such as synthetic rubber with a cored bar 32 embedded therein, and includes a cylindrical upper mount main body 30 and an umbrella-shaped cover portion 31.

  An insertion hole 302 for inserting the piston rod 50 through the upper surface 300 and the lower surface 301 is formed in the center of the upper mount body 30 so that the cover portion 31 and the shaft center O coincide with each other. An accommodation portion 303 that accommodates the bearing 4 is formed on the lower surface 301 of the upper mount body 30.

  The cover portion 31 is formed on the lower surface 301 of the upper mount body 30 so as to surround the accommodating portion 303 of the upper mount body 30, and covers the upper surface 200 of the spring seat body 20 of the spring seat 2. A clearance d is provided in the thrust direction with respect to the upper surface 200 of 20. Further, the outer edge portion 310 of the cover portion 31 is formed in a cylindrical shape and surrounds the upper surface 200 side of the outer peripheral surface 207 of the spring seat body 200 (see FIG. 1).

  5A, 5B, and 5C are a plan view, a bottom view, and a front view of the bearing 4, and FIG. 5D is a view of the bearing 4 shown in FIG. It is DD sectional enlarged view.

  The bearing 4 is a sliding bearing, and as shown in the drawing, a cylindrical lower case 41 into which an annular upper case 40 and a piston rod 50 of a shock absorber 51 are inserted and which is rotatably combined with the upper case 40. And an annular center plate 42 and a metal washer 43 disposed between the upper case 40 and the lower case 41.

  The upper case 40 is formed of a high-strength synthetic resin such as a polyamide resin or a polypropylene resin reinforced with glass fibers, and an upper surface 400 has a mounting surface 401 that contacts the inner surface 304 of the housing portion 303 of the upper mount 3. Is formed. The bearing 4 is accommodated in the accommodating portion 303 of the upper mount 3 by bringing the mounting surface 401 of the upper case 40 into contact with the inner surface 304 of the accommodating portion 303 of the upper mount 3, so that the bearing 4 is accommodated in the accommodating portion 303 of the upper mount 3. Fixed to.

  A mounting hole 403 for mounting the metal washer 43 is formed through the upper surface 401 in the lower surface 402 of the upper case 40, and the upper surface 430 of the metal washer 43 is formed around the mounting hole 403 in the lower surface 402. An annular lower surface 404 is formed in contact with.

  The piston rod 50 of the shock absorber 51 is inserted into the lower case 41. The lower case 41 is formed of a synthetic resin having excellent sliding characteristics such as a polyacetal resin impregnated with a lubricating oil as necessary, and an annular upper surface 411 on which the center plate 42 is placed is formed on the upper end surface 410 thereof. Is formed.

  A flange portion 413 is formed on the outer peripheral surface 412 of the lower case 41 so as to come into contact with the mounting surface 201 of the spring seat body 20 of the spring seat 2 when the bearing 4 is mounted on the spring seat 2. Further, when the bearing 4 is mounted on the spring seat 2, the outer peripheral surface 412 is inserted into a guide groove 206 formed in the inner peripheral surface 205 of the mounting hole 204 of the spring seat body 20 of the spring seat 2. A plurality of stops 414 are formed at equal intervals in the circumferential direction. In FIG. 5, only some of the rotation stoppers 414 are denoted by reference numerals.

  The center plate 42 is formed of a thermoplastic elastomer having excellent sliding characteristics such as polyethylene and thermoplastic polyester elastomer, and is disposed between the annular lower surface 404 of the upper case 40 and the annular upper surface 411 of the lower case 41. As a result, the upper case 40 and the lower case 41 rotate relatively via the center plate 42.

  The metal washer 43 is disposed between the annular lower surface 404 of the upper case 40 and the upper surface 420 of the center plate 42, and the piston rod 50 of the shock absorber 51 is inserted therein. The metal washer 43 is formed of a steel plate such as steel or stainless steel, or a non-ferrous alloy plate such as copper alloy or titanium alloy, and a cylindrical boss portion 431 mounted on the mounting hole 403 of the upper case 40 on the upper surface 430 thereof. Is formed.

  In the suspension mounting structure 1 configured as described above, when the coil spring 52 is rotated in the circumferential direction R around the axis O by the steering operation, the spring seat 2 that supports the coil spring 52 and the lower case 41 of the bearing 4 are also coil spring 52. At the same time, it rotates in the circumferential direction R. On the other hand, the upper case 40 of the bearing 4 is placed on the nut 7 screwed into the screw portion 500 of the piston rod 50 and a step surface (not shown) of the piston rod 50 formed at the root portion of the screw portion 500. The bearing 4 is held by the upper washer 3 so as not to rotate in the circumferential direction R with respect to the piston rod 50. As a result, in the bearing 4, relative rotation in the circumferential direction R occurs between the upper case 40 and the lower case 41. This relative rotation is smoothly performed by the center plate 42 of the bearing 4 disposed between the annular upper surface 411 of the lower case 41 and the metal washer 43, whereby the steering operation is also performed without resistance. As described above, the suspension mounting structure 1 allows the spring 4 to be attached to the strut suspension 5 via the coil spring 52 while allowing the bearing 4 to rotate the coil spring 52 in the circumferential direction R with respect to the upper mount 3. Support the applied load.

  The embodiment of the present invention has been described above.

  In the present embodiment, since the spring seat 2 is made of synthetic resin, the corrosion resistance can be improved as compared with a metal spring seat.

  In the present embodiment, the spring seat 2 has a support surface 203 that supports the upper end portion 520 of the coil spring 52 on the lower surface 202, and the upper surface 200 side of the outer peripheral surface 207 is the outer edge portion of the cover portion 31 of the upper mount 3. A flange portion 22 that protrudes radially outward from the outer edge portion 310 of the cover portion 31 of the upper mount 3 is provided on the outer peripheral surface 207 of the annular spring seat body 2 surrounded by 310. For this reason, when a vehicle adopting the suspension mounting structure 1 is washed with a high-pressure car wash machine, as shown in FIG. 2, it is injected into the tire house from the nozzle of the high-pressure car wash machine, and the upper mount 3 and the spring seat 2 The high pressure water P toward the gap can be blocked by the flange portion 22.

  In the present embodiment, the spring seat 2 is surrounded by the outer edge portion 310 of the cover portion 31 of the upper mount 3 on the upper surface 200 side of the outer peripheral surface 207 of the spring seat body 20. For this reason, when a vehicle employing the suspension mounting structure 1 is washed with a high-pressure car wash machine, as shown in FIG. 2, the high-pressure water P ′ injected into the tire house from the nozzle of the high-pressure car wash machine is Even when the direction of traveling toward the (ceiling of the tire house) is changed and the clearance between the outer edge portion 310 of the cover portion 31 of the upper mount 3 and the flange portion 22 of the spring seat 2 is reached, this high-pressure water P ′ is used as the spring seat. It can be blocked by the outer peripheral surface 207 of the body 2.

  Therefore, according to the present embodiment, the corrosion resistance is high, and high-pressure water enters the bearing 4 disposed between the upper mount 3 and the spring seat 2 when washing with a high-pressure car wash machine. Can be prevented.

  In the present embodiment, the outer diameter r of the flange portion 22 of the spring seat 2 is a line segment passing through the outer edge end 223 of the upper surface 220 of the flange portion 22 and the lower end 311 of the outer edge portion 310 of the cover portion 31 of the upper mount 3. Assuming that the angle α formed by L and the perpendicular V is high-pressure water P that is injected from the nozzle of the high-pressure car wash machine and enters the tire house when the vehicle employing the suspension mounting structure 1 is washed by the high-pressure car wash machine. It is set to be larger than an angle β formed by the injection direction and the perpendicular V (in the case of a normal automobile, a range of 30 degrees to 60 degrees). For this reason, when a vehicle adopting the suspension mounting structure 1 is washed with a high-pressure car wash machine, as shown in FIG. 2, it is injected into the tire house from the nozzle of the high-pressure car wash machine, and the upper mount 3 and the spring seat 2 It is possible to more reliably block the high-pressure water P toward the gap by the flange portion 22.

  In the present embodiment, the flange portion 22 of the spring seat 2 is such that the lower surface 221 of the flange portion 22 is positioned closer to the upper surface 200 of the spring seat body 20 than the support surface 203 of the spring seat body 20. When a large load is applied to the strut suspension 5, the coil spring 52 contracts. At this time, if the lower surface 221 of the flange portion 22 is formed flush with the support surface 203 of the spring seat body 20, the second coil from the upper end 520 of the coil spring 52 is more radial than the first coil. Since it bulges outward, the second coil may come into contact with the lower surface 221 of the flange portion 22. In the present embodiment, since the upper surface 200 side of the outer peripheral surface 207 of the spring seat body 20 is surrounded by the outer edge portion 310 of the cover portion 31 of the upper mount 3, the thickness of the flange portion 22 is greater than the thickness of the spring seat body 20. getting thin. For this reason, when the second coil from the upper end 520 of the coil spring 52 comes into contact with the lower surface 221 of the flange 22, the flange 22 may be damaged by the pressure of the coil spring 52. On the other hand, in the present embodiment, the lower surface 221 of the flange portion 22 is located on the upper surface 200 side of the spring seat body 20 with respect to the support surface 203 of the spring seat body 20, and therefore the upper end portion 520 of the coil spring 52. The second coil can be prevented from coming into contact with the lower surface 221 of the flange portion 22, thereby preventing the flange portion 22 from being damaged by the pressure of the coil spring 52.

  Further, in the present embodiment, the flange portion 22 of the spring seat 2 is inclined toward the lower surface 202 side of the spring seat body 20 as the upper surface 220 of the flange portion 22 goes radially outward. For this reason, when a vehicle employing the suspension mounting structure 1 is washed with a high-pressure car wash machine, as shown in FIG. 2, the high-pressure water P ′ injected into the tire house from the nozzle of the high-pressure car wash machine is Even when the direction of traveling toward the (ceiling of the tire house) is changed and the upper surface 220 of the flange portion 22 of the spring seat 2 is reached, the high-pressure water P ′ flows down from the upper surface 220 of the flange portion 22 radially outward. be able to.

  Further, in the present embodiment, the spring seat 2 is formed on the upper surface 220 of the spring seat body 20 and has a placement surface 201 on which the bearing 4 is placed. Projecting from the upper surface 200 of the spring seat body 20 located around the placement surface 201, a step surface 208 is formed between the upper surface 200 of the spring seat body 20 located around the placement surface 201. Yes. For this reason, when a vehicle employing the suspension mounting structure 1 is washed with a high-pressure car wash machine, as shown in FIG. 2, the high-pressure water P ′ injected into the tire house from the nozzle of the high-pressure car wash machine is The direction of traveling toward the ceiling of the tire house is changed to reach the gap between the outer edge portion 310 of the cover portion 31 of the upper mount 3 and the flange portion 22 of the spring seat 2 and exceed the outer peripheral surface 207 of the spring seat body 2. Even when it enters the inside, it can be blocked by the step surface 208 of the spring seat body 2, so that high-pressure water can be more reliably prevented from entering the bearing 4.

  In addition, this invention is not limited to said embodiment, Many deformation | transformation are possible within the range of the summary.

  For example, in the spring seat 2 of the above-described embodiment, a plurality of guide grooves 206 are formed at equal intervals in the circumferential direction on the inner peripheral surface 205 of the mounting hole 204 of the spring seat body 20, and in accordance with this, a bearing On the outer peripheral surface 412 of the four lower cases 41, a plurality of rotation stoppers 414 are formed at equal intervals in the circumferential direction. However, the present invention is not limited to this. It is sufficient that at least one guide groove 206 is formed on one of the inner peripheral surface 205 of the mounting hole 204 of the spring seat body 20 and the outer peripheral surface 412 of the lower case 41 of the bearing 4. Alternatively, it may be formed on the other of the inner peripheral surface 205 of the mounting hole 204 of the spring seat body 20 and the outer peripheral surface 412 of the lower case 41 of the bearing 4. Even in this case, the lower case 41 is prevented from rotating with respect to the mounting surface 201 of the spring seat body 20, and the lower case 41 and the spring seat body 20 are prevented from being worn by sliding between them. Can do.

  In the spring seat 2 of the above-described embodiment, the upper end portion 520 of the coil spring 52 is directly in contact with the support surface 203 of the spring seat main body 20, but the lower surface 202 of the spring seat main body 20 or the spring seat main body. A cushioning material made of rubber, elastomer, or the like is provided to cover the lower surface 202 of 20 and the outer peripheral surface 212 of the accommodating portion 21, and the upper end portion 520 of the coil spring 52 is brought into contact with the support surface 203 of the spring seat body 20 through this cushioning material May be. In this case, the cushioning material may be integrated with the spring seat body 20 or may be separate.

  In the above embodiment, the bearing 4 is arranged between the annular upper case 40, the cylindrical lower case 41 that is rotatably combined with the upper case 40, and the upper case 40 and the lower case 41. In the above description, a sliding bearing having an annular center plate 42 that allows rotation between the two is taken as an example. However, the present invention is not limited to this. The bearing 4 only needs to allow rotation between the spring seat 2 and the upper mount 3, and may be, for example, a rolling bearing.

  The present invention is not limited to the strut suspension 5 and can be widely applied to a suspension mounting structure for mounting a suspension having a shock absorber and a coil spring to the vehicle body 6.

1: Suspension mounting structure 2: Spring seat 3: Upper mount 4: Bearing 5: Strut suspension 6: Vehicle body 7: Nut 20: Spring seat body 21: Spring seat 2 housing portion 22: Spring seat 2 flange portion 30: Upper mount body 31: Cover portion of upper mount 32: Core 40: Upper case 41: Lower case 42: Center plate 43: Metal washer 50: Piston rod 51: Shock absorber 52: Coil spring 53: Bump stopper 200: Spring seat Upper surface of main body 20 201: Placement surface of spring seat main body 202: Lower surface of spring seat main body 203: Support surface of spring seat main body 204: Mounting hole of spring seat main body 20 205: Inner peripheral surface of the mounting hole 204 206: Guide groove of the mounting hole 204 207: Outer peripheral surface of the spring seat main body 208: Stepped surface of the spring seat main body 210: Inner peripheral surface of the accommodating portion 21 211: In the accommodating portion 21 Protruding portion 212: outer peripheral surface of accommodating portion 21 220: upper surface of flange portion 221: lower surface of flange portion 22 222: stepped surface of flange portion 22 223: outer edge of upper surface 220 300: upper surface of upper mount body 30 301: upper Lower surface of mount main body 302: Insertion hole of upper mount main body 30 303: Housing portion of upper mount main body 30 304: Inner surface of housing portion 303 310: Outer edge portion of cover portion 311: Lower end of outer edge portion 310: Upper case 40 401: Mounting surface of upper case 40 402: Upper case 0: lower surface 403: mounting hole of upper case 40 404: annular lower surface of upper case 40 410: upper end surface of lower case 41 411: annular upper surface of lower case 41 412: outer peripheral surface of lower case 41 413: flange of lower case 41 414: Rotation stop of the lower case 41 415: Inner peripheral surface of the lower case 41 420: Upper surface of the center plate 42 430: Upper surface of the metal washer 43 431: Boss portion of the metal washer 43 500: Screw portion of the piston rod 50 520: Upper end portion 530 of coil spring 52: Upper end portion of bump stopper 53

Claims (7)

A spring seat made of a synthetic resin that is rotatably arranged relative to an upper mount for attaching the piston rod of the suspension to the vehicle body by a bearing, and supports the upper end of the coil spring of the suspension,
The upper surface is arranged with a gap in the thrust direction with respect to the upper mount, the upper surface side of the outer peripheral surface is surrounded by the outer edge portion of the upper mount, and a support surface for supporting the upper end portion of the coil spring is formed on the lower surface An annular spring seat body,
A spring seat, comprising: a flange formed on the outer peripheral surface of the spring seat body and protruding radially outward from the outer edge portion of the upper mount. The spring seat according to claim 1,
The outer diameter of the flange is
The angle α between the line segment passing through the outer edge of the upper surface of the flange and the lower edge of the outer edge of the upper mount and the vertical line is a line passing through the edge of the fender of the vehicle body and the outer edge of the upper surface of the flange. A spring seat characterized by being set to be larger than an angle β formed with a perpendicular. The spring seat according to claim 2,
The outer diameter of the flange is
The spring seat is characterized in that the angle α formed is set to be larger than 30 degrees. The spring seat according to any one of claims 1 to 3,
The flange is
The lower surface of the said flange is located in the said upper surface side of the said spring seat main body rather than the said support surface of the said spring seat main body. The spring seat characterized by the above-mentioned. The spring seat according to any one of claims 1 to 4,
The flange is
A spring seat characterized in that the upper surface of the flange is inclined toward the lower surface side of the spring seat body as it goes radially outward. The spring seat according to any one of claims 1 to 5,
Formed on the upper surface of the spring seat body, further comprising a mounting surface for mounting the bearing;
The mounting surface described above is
The spring seat characterized by protruding from the upper surface of the spring seat body located around the mounting surface. A suspension mounting structure for mounting a suspension having a piston rod and a coil spring that rotates relative to the piston rod by a steering operation to a vehicle body,
A cylindrical upper mount for attaching the piston rod to the vehicle body;
The spring seat according to any one of claims 1 to 6, which supports an upper end portion of the coil spring;
A bearing disposed between the upper mount and the spring seat to allow relative rotation of both; and
The upper mount is
A cover portion formed at a lower end portion of the upper mount and provided with a gap in a thrust direction with respect to the upper surface of the spring seat body so as to cover the upper surface of the spring seat body of the spring seat. And
The outer edge of the cover part is
The suspension mounting structure characterized by surrounding the upper surface side of the outer peripheral surface of the spring seat body as the outer edge portion of the upper mount.

Images