JP7002366B2 - Suspension mounting structure - Google Patents

Description

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

Patent Document 1 discloses a suspension structure for a vehicle capable of protecting components such as bearings from muddy water. This vehicle suspension structure includes a shock absorber having a piston rod, a coil spring that rotates relative to the piston rod by steering operation, a spring seat (upper seat) that supports the upper end of the coil spring, and a piston. It is equipped with an upper mount (upper support) for attaching the rod to the vehicle body, and a bearing that is arranged between the spring seat and the upper mount and allows relative rotation between the two. Thereby, the vehicle suspension structure supports the load while allowing the relative rotation of the piston rod and the coil spring.

Here, the spring seat is generally a metal annular plate material, 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 in order to increase the strength. A drain hole is formed at the bottom of the annular groove.

Further, the upper mount is generally a rubber cylindrical member, and is arranged at the lower end thereof with a gap in the thrust direction with respect to the spring seat so as to cover the inner peripheral side region of the upper surface of the spring seat. An umbrella-shaped cover portion (inner cylinder portion of the upper support) is formed. The outer edge of the cover is provided with an annular protrusion whose tip is located radially outward of the outer diameter of the annular groove of the spring seat.

In the vehicle suspension structure having the above configuration, the muddy water that has entered the upper surface side of the cover portion of the upper mount flows outward in the radial direction on the upper surface of the cover portion and moves from the outer edge portion of the cover portion to the annular protrusion portion. .. Then, it flows downward from the annular protrusion. At this time, since the tip of the annular protrusion is located radially outward of the outer diameter of the annular groove of the spring seat, the muddy water that has flowed downward from the annular protrusion is into the annular groove of the spring seat. It flows out of the annular groove of the spring seat without penetrating. Further, even if it penetrates into the annular groove of the spring seat, it flows downward from the drain hole formed at the bottom of the annular groove. Therefore, according to the vehicle suspension structure described in Patent Document 1, components such as bearings can be protected from muddy water.

Japanese Unexamined Patent Publication No. 2006-2996

Conventionally, a high-pressure car wash machine that injects high-pressure water from a nozzle attached to the tip of a hose has become widespread. The user can wash the car by operating the nozzle and spraying high-pressure water on the part where the dirt is to be removed. Here, the user may inject high-pressure water into the tire house with the nozzle directed upward from near the ground in order to clean the inside of the tire house. In this case, in the vehicle suspension structure described in Patent Document 1, the high-pressure water that has infiltrated into the tire house from near the ground upwards hits the ceiling of the tire house and changes the direction of travel, and the upper mount and the spring seat are used. There is a possibility of entering the annular groove of the spring seat through the gap between the tires. Here, if the amount of drainage from the drain hole of the annular groove is smaller than the amount of high-pressure water entering the annular groove, water overflows from the annular groove and infiltrates into the bearing, which deteriorates the sliding performance of the bearing. .. On the other hand, if the drainage hole of the annular groove is enlarged in order to improve the drainage property of the water accumulated in the annular groove, the strength required for the spring seat may not be obtained.

Further, in the suspension structure for vehicles described in Patent Document 1, since the spring seat is generally made of metal, the surface is coated with rust preventive coating, but if the surface is scratched by flying stones or the like, high pressure water is applied there. There is a possibility that it will rust and corrode due to the application.

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

In order to solve the above problems, in the present invention, the spring seat is made of synthetic resin and is arranged so as to be relatively rotatable with a gap in the thrust direction with respect to the upper mount by the bearing, and the upper end of the coil spring is on the lower surface. A support surface is formed to support the portion, and a flange is provided on the outer peripheral surface of the annular spring seat body in which the upper surface side of the outer peripheral surface is surrounded by the outer edge portion of the upper mount so as to project radially outward from the outer edge portion of the upper mount. rice field. Here, in the flange, the angle α formed by the line segment passing through the outer edge of the upper surface of the flange and the lower end of the outer edge of the upper mount and the vertical line 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 by the assumed injection direction of the high-pressure water entering the house and the perpendicular line.

For example, the suspension mounting structure of the present invention
It 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 steering operation to the vehicle body.
With the fender provided on the car body,
An upper mount for attaching the piston rod to the vehicle body,
A synthetic resin spring seat that is rotatably arranged relative to the upper mount and supports the upper end of the coil spring .
A bearing located between the upper mount and the spring seat to allow relative rotation of the two is provided.
The spring seat is
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 supporting the upper end portion of the coil spring is formed on the lower surface. The ring-shaped spring seat body and
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 is provided.
The outer diameter of the flange is
The angle α formed by the line segment and the perpendicular line passing through the outer edge of the upper surface of the flange and the lower end of the outer edge of the upper mount is the line segment and the perpendicular passing through the edge of the fender and the outer edge of the upper surface of the flange. It is set to be larger than the angle β formed by .

In the present invention, since the spring seat is made of synthetic resin, the corrosion resistance can be improved as compared with the spring seat made of metal. Further, a support surface for supporting the upper end portion 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 in the radial direction from the outer edge portion of the upper mount. Since a flange protruding outward is provided, when washing a car using a high-pressure car wash machine, this flange blocks high-pressure water that is sprayed from the nozzle into the tire house and heads toward the gap between the upper mount and the spring seat. Can be done. In addition, since the upper surface side 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 hits the ceiling of the tire house and changes the direction of travel to 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 possible to prevent high-pressure water from entering the bearing arranged between the upper mount and the spring seat when the car is washed using a high-pressure car wash machine and has excellent corrosion resistance. 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 sectional view taken along the line BB of the spring seat 2 shown in FIG. 3A. .. 4 (A) and 4 (B) are a plan view and a bottom view of the upper mount 3, and FIG. 4 (C) is a sectional view taken along the line CC of the upper mount 3 shown in FIG. 4 (A). .. 5 (A), 5 (B) and 5 (C) are a plan view, a bottom view and a front view of the bearing 4, and FIG. 5 (D) is a view of the bearing 4 shown in FIG. 5 (A). It is a DD cross-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. Further, FIG. 2 is an enlarged view of part 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 arranged so as to surround the shock absorber 51 having the piston rod 50, the coil spring 52 arranged so as to surround the shock absorber 51, and the shock absorber 51. The strut suspension 5 for a vehicle provided with the bump stopper 53 is attached to the vehicle body 6, and the spring seat 2 supporting the upper end portion 520 of the coil spring 52 and the piston rod 50 are attached to the vehicle body 6. It includes an upper mount 3 for mounting and a bearing 4 arranged between the spring seat 2 and the upper mount 3 to allow relative rotation of the two.

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

The spring sheet 2 is formed of a high-strength synthetic resin such as a polyamide resin reinforced with glass fiber, glass powder, carbon fiber, etc., a polypropylene resin, a polyacetal resin, a polybutylene terephthalate resin, etc., and is an annular spring as shown in the figure. It has a seat body 20, a tubular accommodating portion 21, and a flange portion 22.

The spring seat body 20 has 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 for supporting 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 body 20 located around the mounting surface 201, thereby between the mounting surface 201 and the upper surface 200 of the spring seat body 20 located around the mounting surface 201. A stepped surface 208 is formed on the surface. In the center of the mounting surface 201, a mounting hole 204 for mounting the bearing 4 penetrates the lower surface 202 and is formed so that the accommodating portion 21 and the axis O coincide with each other.

On the inner peripheral surface 205 of the mounting hole 204, a plurality of guide grooves 206 along the axial center O are formed at equal intervals in the circumferential direction. A rotation stop 414 (see FIG. 5), which will be described later, of the bearing 4 is inserted into the guide groove 206. In FIG. 3, only a part of the guide grooves 206 are designated with reference numerals.

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

The flange portion 22 is formed on the outer peripheral surface 207 of the spring seat main body 20 and projects radially outward from the outer edge portion 310 of the 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 side of the spring seat main body 20 so as to go 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 body 20 with respect to the support surface 203 of the spring seat body 20, thereby forming a stepped surface 222 with the support surface 203.

As shown in FIG. 2, the outer diameter r of the flange portion 22 of the spring seat 2 is the outer edge portion 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 by the line segment L passing through the lower end (lower end on the outer peripheral surface side) 311 and the vertical line V is the edge portion (not shown) of the fender of the vehicle adopting this suspension mounting structure 1 and the upper surface 220 of the flange portion 22. A line segment passing through the outer edge end 223 of the vehicle, that is, high-pressure water P that is jetted from the nozzle of the high-pressure car wash machine and infiltrates into the tire house of the vehicle when the car is washed using the high-pressure car wash machine of the vehicle adopting this suspension mounting structure 1. It is set to be larger than the angle β formed by the assumed injection direction of and the vertical line V. Specifically, the suspended angle β varies depending on the type and size of the vehicle adopting the suspension mounting structure 1, but in the case of an ordinary automobile, it falls within the range of 30 to 60 degrees. Therefore, the outer diameter r of the flange portion 22 is set so that the angle α formed is at least 30 degrees or more, preferably 45 degrees or more, and 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 sectional view taken along the line CC of the upper mount 3 shown in FIG. 4 (A). ..

The upper mount 3 has a core metal 32 embedded therein and is made of an elastic member such as synthetic rubber, and has 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 main body 30 so that the cover portion 31 and the axial center O are aligned with each other. Further, an accommodating portion 303 for accommodating the bearing 4 is formed on the lower surface 301 of the upper mount main body 30.

The cover portion 31 is formed on the lower surface 301 of the upper mount main body 30 so as to surround the accommodating portion 303 of the upper mount main body 30, and covers the upper surface 200 of the spring seat main body 20 of the spring seat 2. A gap d is provided in the thrust direction with respect to the upper surface 200 of the 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 main body 200 (see FIG. 1).

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

The bearing 4 is a slide bearing, and as shown in the figure, the annular upper case 40 and the piston rod 50 of the shock absorber 51 are inserted, and the tubular lower case 41 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 made of a high-strength synthetic resin such as a polyamide resin reinforced with glass fiber or a polypropylene resin, and the upper surface 400 thereof has a mounting surface 401 in contact with the inner surface 304 of the accommodating portion 303 of the upper mount 3. It is formed. 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 and accommodating the bearing 4 in the accommodating portion 303 of the upper mount 3, the bearing 4 is accommodated in the accommodating portion 303 of the upper mount 3. Is fixed to.

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

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

The outer peripheral surface 412 of the lower case 41 is formed with a flange portion 413 that comes 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 the guide groove 206 formed in the inner peripheral surface 205 of the mounting hole 204 of the spring seat main 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 a part of the rotation stop 414 is designated with a reference numeral.

The center plate 42 is formed of a thermoplastic elastomer having excellent sliding characteristics such as polyethylene and a thermoplastic polyester elastomer, and is arranged 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 arranged 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. The metal washer 43 is made of a steel plate such as steel or stainless steel, or a non-iron alloy plate such as a copper alloy or a titanium alloy. Is formed.

In the suspension mounting structure 1 having the above configuration, when the coil spring 52 rotates in the circumferential direction R around the axis O by a steering operation, the spring seat 2 supporting the coil spring 52 and the lower case 41 of the bearing 4 also have the 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 the stepped surface (not shown) of the piston rod 50 formed at the base portion of the screw portion 500. It is sandwiched by the metal washer 43 of the bearing 4, and is held by the upper mount 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 arranged 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 coil spring 52 to rotate in the circumferential direction R with respect to the upper mount 3 by the bearing 4, and the strut type suspension 5 via the coil spring 52 by the spring seat 2. Supports 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 the metal spring seat.

Further, in the present embodiment, the spring seat 2 has a support surface 203 formed on the lower surface 202 to support the upper end portion 520 of the coil spring 52, 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 is provided on the outer peripheral surface 207 of the annular spring seat main body 2 surrounded by the 310 so as to project radially outward from the outer edge portion 310 of the cover portion 31 of the upper mount 3. Therefore, when the vehicle in which the suspension mounting structure 1 is adopted is washed by the high pressure car wash machine, as shown in FIG. 2, the vehicle is injected into the tire house from the nozzle of the high pressure car wash machine to form 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.

Further, in the present embodiment, in the spring seat 2, the upper surface 200 side of the outer peripheral surface 207 of the spring seat main body 20 is surrounded by the outer edge portion 310 of the cover portion 31 of the upper mount 3. Therefore, when the vehicle in which the suspension mounting structure 1 is adopted is washed by the high-pressure car wash machine, the high-pressure water P'injected into the tire house from the nozzle of the high-pressure car wash machine is the vehicle body 6 as shown in FIG. Even when the direction of travel is changed by hitting (the ceiling of the tire house) and 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 is reached, this high-pressure water P'is applied to the spring seat. It can be blocked by the outer peripheral surface 207 of the main body 2.

Therefore, according to the present embodiment, high-pressure water has excellent corrosion resistance and when washing a car using a high-pressure car wash machine, high-pressure water infiltrates into the bearing 4 arranged between the upper mount 3 and the spring seat 2. Can be prevented.

Further, 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 line V is injected from the nozzle of the high-pressure car wash machine and infiltrates into the tire house when the vehicle in which the suspension mounting structure 1 is adopted is washed by the high-pressure car wash machine. It is set to be larger than the angle β (range of 30 to 60 degrees in the case of a normal automobile) formed by the injection direction and the perpendicular line V. Therefore, when a vehicle in which the suspension mounting structure 1 is adopted is washed by a high-pressure car wash machine, as shown in FIG. 2, the vehicle is injected into the tire house from the nozzle of the high-pressure car wash machine to form the upper mount 3 and the spring seat 2. The high-pressure water P toward the gap can be more reliably blocked by the flange portion 22.

Further, in the present embodiment, in the flange portion 22 of the spring seat 2, 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. 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 portion 520 of the coil spring 52 is radially larger 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, the upper surface 200 side of the outer peripheral surface 207 of the spring seat main body 20 is surrounded by the outer edge portion 310 of the cover portion 31 of the upper mount 3, so that the thickness of the flange portion 22 is larger than the thickness of the spring seat main body 20. Become thin. Therefore, when the second coil from the upper end portion 520 of the coil spring 52 comes into contact with the lower surface 221 of the flange portion 22, the flange portion 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 closer to the upper surface 200 of the spring seat body 20 than the support surface 203 of the spring seat body 20, so that the upper end portion 520 of the coil spring 52 is located. It is possible to prevent the coil of the second winding 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 main body 20 so that the upper surface 220 of the flange portion 22 is directed outward in the radial direction. Therefore, when the vehicle in which the suspension mounting structure 1 is adopted is washed by the high-pressure car wash machine, the high-pressure water P'injected into the tire house from the nozzle of the high-pressure car wash machine is the vehicle body 6 as shown in FIG. Even when the direction of travel is changed by hitting (the ceiling of the tire house) and the upper surface 220 of the flange portion 22 of the spring seat 2 is reached, this high-pressure water P'flows outward from the upper surface 220 of the flange portion 22 in the radial direction. be able to.

Further, in the present embodiment, the spring seat 2 is formed on the upper surface 220 of the spring seat main body 20 and has a mounting surface 201 for mounting the bearing 4, and the mounting surface 201 is mounted. It protrudes from the upper surface 200 of the spring seat main body 20 located around the mounting surface 201, whereby a stepped surface 208 is formed between the upper surface 200 of the spring seat main body 20 located around the mounting surface 201. There is. Therefore, when the vehicle in which the suspension mounting structure 1 is adopted is washed by the high-pressure car wash machine, the high-pressure water P'injected into the tire house from the nozzle of the high-pressure car wash machine is the vehicle body 6 as shown in FIG. It hits (the ceiling of the tire house), changes the direction of travel, reaches 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 exceeds the outer peripheral surface 207 of the spring seat body 2. Even if it penetrates into the inside, it can be blocked by the stepped surface 208 of the spring seat main body 2, so that it is possible to more reliably prevent high-pressure water from entering the bearing 4.

The present invention is not limited to the above embodiment, and many modifications can be made within the scope of the gist thereof.

For example, in the spring seat 2 of the above 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 main body 20, and bearings are formed accordingly. On the outer peripheral surface 412 of the lower case 41 of No. 4, a plurality of rotation stoppers 414 are formed at equal intervals in the circumferential direction. However, the present invention is not limited to this. At least one guide groove 206 may be 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, and the rotation stop 414 is formed accordingly. Also, it may be formed on the other side 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 main body 20, and the lower case 41 and the spring seat main body 20 are prevented from being worn due to sliding between them. Can be done.

Further, in the spring seat 2 of the above 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, elastoma, etc. that covers the lower surface 202 of the 20 and the outer peripheral surface 212 of the accommodating portion 21 is provided, 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 via the cushioning material. You may. In this case, the cushioning material may be integrated with the spring seat body 20 or may be separate.

Further, in the above embodiment, the bearing 4 is arranged between the annular upper case 40, the tubular lower case 41 rotatably combined with the upper case 40, and the upper case 40 and the lower case 41. The present invention has been described by taking as an example a slide bearing having an annular center plate 42 that allows rotation between the two. However, the present invention is not limited to this. The bearing 4 may be a rolling bearing, for example, as long as it can allow rotation between the spring seat 2 and the upper mount 3.

Further, the present invention is not limited to the strut type 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 type suspension 6: Body 7: Nut 20: Spring seat body 21: Spring seat 2 accommodating part 22: Spring seat 2 flange part 30: Upper mount body 31: Upper mount cover 32: Core metal 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 the main body 20 201: Mounting surface of the spring seat main body 20 202: Lower surface of the spring seat main body 20 203: Support surface of the spring seat main body 20 204: Mounting hole 205 of the spring seat main body 20: Inner peripheral surface 206 of the mounting hole 204 : Guide groove of mounting hole 204 207: Outer peripheral surface of spring seat body 20 208: Stepped surface of spring seat main body 20 210: Inner peripheral surface of accommodating portion 21 211: Projection portion of accommodating portion 21 212: Outer peripheral surface of accommodating portion 21 220: Upper surface of the flange portion 22 221: Lower surface of the flange portion 22 222: Stepped surface of the flange portion 22 223: Outer edge of the upper surface 220 300: Upper surface of the upper mount body 30 301: Lower surface of the upper mount body 30 302: Upper mount body Insertion hole 303: Accommodation part of the upper mount body 30 304: Inner surface of the accommodation part 303 310: Outer edge part of the cover part 31 311: Lower end of the outer edge part 310 400: Upper surface of the upper case 40 401: Mounting surface of the upper case 40 402: The lower surface of the upper case 40 403: The mounting hole of the upper case 40 404: The annular lower surface of the upper case 40 410: The upper end surface of the lower case 41 411: The annular upper surface of the lower case 41 412: The outer peripheral surface of the lower case 41 413: The lower Flange portion of case 41 414: Rotation stop of lower case 41 415: Inner peripheral surface of lower case 41 420: Upper surface of center plate 42 430: Upper surface of metal washer 43 431: Boss portion of metal washer 43 500: Piston rod 50 Screw portion 520: Upper end portion of coil spring 52 530: Upper end portion of bump stopper 53

Claims (6)

It 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 steering operation to the vehicle body.
With the fender provided on the car body,
An upper mount for attaching the piston rod to the vehicle body,
A synthetic resin spring seat that is rotatably arranged relative to the upper mount and supports the upper end of the coil spring.
A bearing located between the upper mount and the spring seat to allow relative rotation of the two is provided.
The spring seat is
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 supporting the upper end portion of the coil spring is formed on the lower surface. The ring-shaped spring seat body and
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 is provided.
The outer diameter of the flange is
The angle α formed by the vertical line and the line segment passing through the outer edge of the upper surface of the flange and the lower end of the outer edge of the upper mount is the line segment passing through the edge of the fender and the outer edge of the upper surface of the flange. A suspension mounting structure characterized by being set to be larger than the angle β formed by the vertical line. The suspension mounting structure according to claim 1 .
The outer diameter of the flange is
A suspension mounting structure characterized in that the angle α formed is set to be larger than 30 degrees. The suspension mounting structure according to claim 1 or 2 .
The flange is
A suspension mounting structure characterized in that the lower surface of the flange is located on the upper surface side of the spring seat body with respect to the support surface of the spring seat body. The suspension mounting structure according to any one of claims 1 to 3 .
The flange is
A suspension mounting structure characterized in that the upper surface of the flange is inclined toward the lower surface side of the spring seat body so as to be outward in the radial direction. The suspension mounting structure according to any one of claims 1 to 4 .
It is formed on the upper surface of the spring seat body and further includes a mounting surface for mounting the bearing.
The above-mentioned surface is
A suspension mounting structure characterized in that it protrudes from the upper surface of the spring seat body located around the mounting surface. The suspension mounting structure according to any one of claims 1 to 5 .
The upper mount is
It has a cover portion formed at the lower end of the upper mount and arranged so as to cover the upper surface of the spring seat body of the spring seat with a gap in the thrust direction with respect to the upper surface of the spring seat body. death,
The outer edge of the cover is
A suspension mounting structure characterized in that the outer edge portion of the upper mount surrounds the upper surface side of the outer peripheral surface of the spring seat body.

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