JP2593400Y2 - Suspension support - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspension support such as an upper support and a strut mount interposed between a vehicle suspension mechanism and a vehicle body.

[0002]

2. Description of the Related Art Conventionally, as an upper support interposed between a vehicle suspension mechanism and a vehicle body, a metal outer member, and a metal outer member substantially coaxially arranged in a storage space of the outer member. 2. Description of the Related Art There is known an inner member and a rubber elastic body interposed between the outer member and the inner member.

In this vehicle, an outer member is attached to a vehicle body, and an inner member is fixed to an operating shaft of a shock absorber of a suspension mechanism. The rubber elastic body attenuates vibration from the suspension mechanism. By the way, in order to effectively restrict the relative displacement between the outer member and the inner member, it is preferable that the inner member has the most suitable shape. Here, the inner member is manufactured by forging a metal material or welding a plurality of metal parts, but the degree of freedom in selecting a shape at the time of manufacturing is limited.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has an axially protruding metal plate fixed to an operating shaft of a shock absorber of a suspension mechanism. By forming the first protrusion and the second protrusion from resin, the degree of freedom in selecting the shape of the first protrusion and the second protrusion is ensured, and thereby the relative displacement of the outer member and the inner member in the axial direction. It is an object of the present invention to provide a suspension support capable of effectively regulating the suspension.

[0005]

SUMMARY OF THE INVENTION A suspension support according to the present invention comprises an outer member attached to a vehicle body by forming an accommodating space therein by joining the opening peripheral edges of a first member and a second member in an overlapping manner. And an inner member disposed substantially coaxially in a storage space for the outer member and fixed to the suspension mechanism, and a rubber elastic body interposed between the outer member and the inner member. Metal fixed plate fixed to the operating shaft of the shock absorber, and resin is almost coaxially integrated around the entire outer periphery of the fixed plate.
Of formed by injection molding, a first projecting portion that faces the first member protrudes to one axial direction than the fixed platen, morphism resin
Almost coaxially around the entire periphery of the fixed plate
And a second protruding portion that is formed physically and protrudes to the other side in the axial direction from the fixed plate and faces the second member.

In the present invention, the fixed plate constituting the inner member is fixed to the operating shaft of the shock absorber of the suspension mechanism. The fixing means may employ bolting or the like.
The fixed plate is made of metal to secure required strength, and is generally formed of steel or aluminum alloy. The first projecting portion and the second projecting portion are formed by integrally molding a resin substantially coaxially around the entire outer peripheral portion of the fixed plate. The means of the molded, adopt injection molding.

The resin may be either a thermoplastic resin or a thermosetting resin, for example, a nylon resin or a phenol resin. The resin may include a fiber. As the fibers, glass fibers, meta-aramid fibers, whiskers and the like can be employed. In the present invention, by the shrinkage accompanying cooling of the resin after molding, it is possible to secure the integral connection between the first and second protrusions made of resin and the fixed plate. Furthermore, in order to further ensure high integral bonding between the first and second projecting portions made of resin and the fixing plate, a concave or convex engaging portion is formed on the fixing plate, or the surface of the fixing plate is formed. It can be roughened or roughened.

In the present invention, the space between the first member of the outer member and the first protrusion made of resin may be a space, or a part of rubber of a rubber elastic body may be arranged. The same is true between the second member of the outer member and the second protrusion.

[0009]

The first projecting portion made of resin constituting the inner member projects in one axial direction from the fixed plate and faces the first member, and the second projecting portion also made of resin is more axially than the fixed plate. It projects in the other direction and faces the second member. Therefore, the relative displacement in the axial direction between the outer member and the inner member is regulated by the first protrusion and the second protrusion.

[0010]

【Example】

(First Embodiment) An embodiment in which the present invention is applied to an upper support of a vehicle will be described below. A cross section of the upper support 1 is shown in FIG. As shown in FIG. 1, the upper support 1 includes an outer member 2, an inner member 3, and a rubber elastic body 4. The outer member 2 includes a first member 21 having a flange portion 20 having a through hole 20a, and a second member 22 having a flange portion 23 having a through hole 23a. 23 are formed by welding in a superposed state. A mounting bolt 25 is press-fitted into the through hole 20a and the through hole 23a of the outer member 2. Note that a storage space 2r is formed inside the outer member 2.

The inner member 3 is disposed in the storage space 2r of the outer member 2. 3 and 4 show the inner member 3. The inner member 3 is composed of a steel fixed plate 30 and a resin member 31 that is injection-molded with resin substantially coaxially and integrally around the entire outer periphery of the fixed plate 30. The resin is a nylon resin containing glass fibers (30%). The fixed platen 30 has a mounting hole 31a,
A cylindrical portion 31d having a cylindrical portion 31b and a step portion 31c;
And a flange portion 32f extending in the centrifugal direction from the upper end of the flange 32f. As shown in FIG. 4, a flat engaging portion 33 f is formed on the outer peripheral portion of the flange portion 32 f of the fixed platen 30, and the detent property of the resin member 31 is improved.

As shown in FIG. 1, a resin member 31 has a ring-shaped first projecting portion 32 projecting in the axial direction from the fixed plate 30, ie, the direction of the arrow Y 1, and the other in the axial direction from the fixed plate 30. That is, it includes a ring-shaped second protrusion 33 protruding in the direction of arrow Y2 and a ring-shaped third protrusion 34 protruding radially outward from the fixed platen 30 and facing the outer member 2. As shown in FIG. 1, the first protrusion 32 is provided on the first member 21.
Opposing the plate portion 21c. The second protruding portion 33 is a second protruding portion.
It faces the plate 22 c of the member 22. As shown in FIG. 3, the resin member 31 has a flat surface 31h, an inclined surface 31i,
Outer peripheral surface 31j, inclined surface 31k, flat surface 31m, groove 31n
With.

As shown in FIG. 1, the rubber elastic body 4 is interposed between the outer member 2 and the inner member 3. A rubber sleeve 41 is press-fitted into a cylindrical metal fitting 22h bonded to the lower surface side of the second member 22 of the outer member 2. The manufacturing was performed as follows. That is, a rubber material was vulcanized and formed on the outer periphery of the inner member 3 using the inner member 3 as shown in FIG. 3 to form a vulcanized molded product P as shown in FIG. The rubber elastic body 4 according to the vulcanized molded product P is formed with projections 4b and 4c extending in an arc shape. Then, the vulcanized molded product P is press-fitted into the first member 21 and the second member 22 of the outer member 2, and then the first member
The member 21 and the second member 22 were joined by welding.

When assembling the upper support 1 to the vehicle, the operating shaft 50 of the shock absorber 5 is inserted into the mounting holes 31a and 31b of the inner member 3, and
A nut 52 is screwed into a screw portion 51 at the upper end of the operation shaft 50, whereby the inner member 3 is attached to the operation shaft 50. The mounting bolt 25 of the outer member 2 is screwed to the vehicle body, whereby the outer member 2 is mounted on the vehicle body.

In the state where the upper support 1 is mounted on the vehicle as described above, vibration from the operating shaft 50 and the like cause
The inner member 3 and the outer member 2 are relatively displaced, and this relative displacement is allowed by the rubber elastic body 4. As described above, in the present embodiment, the first protrusion 32 protrudes from the fixed board 30 in the arrow Y1 direction, and the second protrusion 33 protrudes from the fixed board 30 in the arrow Y2 direction. Therefore, the rubber stiffness in the directions of the arrows Y1 and Y2, that is, the axial direction increases, and the spring constant in that direction increases. In addition, since the third protruding portion 34 protrudes radially outward from the fixed platen 30, rubber rigidity in the direction perpendicular to the axis increases, and the spring constant in that direction increases.

Further, in the present embodiment, as described above,
A flat engagement portion 33f is formed on the 0 flange portion 32f, and the detent property of the resin member 31 is improved.
The integral coupling between the resin member 31 and the fixed platen 30 constituting the inner member 3 is improved. By the way, when forging a metal material, if the molding shape becomes complicated, a problem such as a lack of a wall occurs, which causes difficulty in molding and an increase in molding cost. In this regard, in the present embodiment in which the first projecting portion 32, the second projecting portion 33, and the third projecting portion 34 are formed by resin injection molding, the entire inner member 3 having the first projecting portion 32 to the third projecting portion 34 is provided. Is more effective in avoiding underfilling and the like, is more advantageous in terms of formability, and can be expected to be lighter than in the case of forming by forging. Since the moldability is easy as described above, the first protrusion 32
The degree of freedom in selecting the shape of the third protrusion 34, the first protrusion 3
The degree of freedom in selecting the amount of protrusion of the second to third protrusions 34 also increases. Therefore, this embodiment is advantageous in tuning the spring constant in the axial direction and the direction perpendicular to the axis.

Further, in this embodiment, a fixed plate 30 common to a plurality of vehicle types is used, and the present invention can be applied to different vehicle types only by changing the size of the resin member 31. The fixed plate 30 is shared by a plurality of vehicle types. A common method can be adopted. Second Embodiment A second embodiment of the present invention will be described with reference to FIGS. This example is an example applied to a strut mount of a vehicle. FIG. 9 shows a cross section of this strut mount. As shown in FIG. 9, the strut mount 6 includes an outer member 7 and
It is composed of an inner member 8 and a rubber elastic body 9. FIG.
As shown in the figure, the outer member 7 is composed of a first member 71 having a flange portion 70 having a through hole 70a and a second member 72 having a flange portion 73 having a through hole 73a. The flange portions 70 and 73 are formed by overlapping. The mounting bolt 25 is press-fitted into the through holes 70a and 73a of the outer member 7. Note that a storage space 7r is formed inside the outer member 7.

The inner member 8 is disposed in the storage space 7r of the outer member 7. The inner member 8 includes a steel fixing plate 80,
A resin member 81 is formed by injection molding with resin substantially coaxially and integrally around the entire outer peripheral portion of the fixed platen 80. The resin is a nylon resin containing glass fibers (30%). As shown in FIG. 8, the fixed board 80 has a flat plate shape and has a mounting hole 80a. A flat engaging portion 83f is formed on the outer peripheral portion of the fixed platen 80, and the detent property of the resin member 81 is improved.

As shown in FIG. 9, the resin member 81 is
A first projecting portion 82 a ring-shaped projecting one clogging arrow Y1 direction of the axial direction than 0, the second protrusion 83 a ring-shaped projecting to the other, that the arrow Y 2 axis direction than the fixed plate 80 It has. The first protrusion 82 is provided on the first member 7.
The first protruding portion 83 faces the first plate portion 71c via the gap 71f, and faces the plate portion 72c of the second member 72 via the gap 72f.

The rubber elastic body 9 is bonded to the inner member 8 by vulcanization and is interposed between the outer member 7 and the inner member 8. The rubber elastic body 9 includes a ring-shaped main body 90, a coating film 91 covering the resin member 81, and a lip-shaped film 9.
2, 93. As shown in FIG. 9, the distal ends of the membrane portions 92 and 93 are normally in contact with the second member 72 and the first member 71. Note that a ring fitting 95 is vulcanized and bonded to the outer peripheral surface of the main body 90 of the rubber elastic body 9.

The manufacturing process was as follows. That is,
Using a vulcanized molded product P in which the inner member 8, the rubber elastic body 9 and the ring fitting 95 were integrally formed, the vulcanized molded product P was press-fitted into the first member 71 as shown in FIG. In this state,
The ring fitting 95 is pressed against the inner periphery of the first member 71 by the rubber rebound of the main body 90. After that, the second member 72 was attached to the first member 71.

By the way, at the time of assembling to the vehicle body, as shown in FIG. A nut 52 is screwed into the portion 51, whereby the inner member 8 is attached to the operating shaft 50. The mounting bolt 25 of the outer member 7 is screwed to the vehicle body, whereby the outer member 7 is mounted on the vehicle body.

As described above, in this embodiment, the first protrusion 82 protrudes from the fixed plate 80 in the direction of arrow Y1, and the second protrusion 83 protrudes from the fixed plate 80 in the direction of arrow Y2. , The first projection 82 and the second projection 83
Performs a stopper function in the axial direction. By the way, FIG.
A characteristic line W1 of 0 (a) schematically shows a load-deflection characteristic when an external force acts from a direction perpendicular to the axis. FIG.
A characteristic line W2 in (b) schematically shows a load-deflection characteristic when an external force acts from the axial direction. FIG. 10 (b)
As shown by the characteristic line W2, rising regions W20 and W21 by the first protrusion 82 and the second protrusion 83 that function as a stopper in the axial direction are developed.

In this embodiment, the same effect as in the first embodiment can be obtained. That is, in the present embodiment, as compared with the case where the entire inner member 8 having the first protrusions 82 and the second protrusions 83 is formed by forging, it is advantageous in terms of formability, and further reduction in weight is expected. it can. Since the formability is easy as described above, the degree of freedom in selecting the shape and the amount of protrusion of the first protrusion 82 and the second protrusion 83 is increased, which is advantageous for tuning the spring constant in the axial direction and the direction perpendicular to the axis. is there.

Further, in this embodiment, it is also possible to adopt a common system in which a fixed plate 80 common to a plurality of vehicle types is used and the size of the resin member 81 is changed. (Other Examples) In the above-described embodiment, the resin members 31 and 81 are formed of a resin containing glass fibers. However, the degree of orientation of fibers such as glass fibers in a predetermined direction is increased, and the resin members 3 and 81 are oriented.
1,81 can be further strengthened. in this case,
The glass fibers can be so oriented in the radial, circumferential, or axial direction of the resin members 31, 81. In this case, for example, it can be formed by loading a resin into the cavity while using a net made of fibers and placing the net in the cavity of the mold so that the fibers are oriented in a predetermined direction.

[0026]

According to the suspension support of the present invention, the first and second protrusions are formed integrally with resin on a metal fixing plate fixed to the operating shaft of the shock absorber of the suspension mechanism. Has been adopted. Therefore, the degree of freedom in selecting the shapes of the first protrusion and the second protrusion is increased. Therefore, the relative displacement in the axial direction between the outer member and the inner member can be effectively regulated.

[Brief description of the drawings]

FIG. 1 is a sectional view of an upper support according to a first embodiment.

FIG. 2 is a sectional view of a vulcanized molded product.

FIG. 3 is a cross-sectional view taken along the line KOK of FIG. 4 showing a cross section of the inner member.

FIG. 4 is a plan view of an inner member.

FIG. 5 is a plan view of the upper support as viewed from the direction of arrow H1 in FIG. 1;

6 is a bottom view showing a state in which the vulcanized molded product according to the second embodiment is press-fitted into a first member, as viewed from the direction of arrow H2 in FIG. 7;

FIG. 7 is a sectional view taken along line MM in FIG. 6;

FIG. 8 is a plan view of a fixing plate of the inner member.

FIG. 9 is a cross-sectional view of a strut mount.

10A and 10B are characteristic diagrams schematically showing load-deflection characteristics.

[Explanation of symbols]

In the drawing, 2 is an outer member, 21 is a first member, 22 is a second member, 2r is a storage space, 3 is an inner member, 30 is a fixed plate, 3
1 is a resin member, 32 is a first protrusion, 33 is a second protrusion,
4 is a rubber elastic body, 7 is an outer member, 71 is a first member, 72
Is a second member, 7r is a storage space, 8 is an inner member, 80 is a fixed plate, 81 is a resin member, 82 is a first protrusion, and 83 is a second member.
The protrusion 9 indicates a rubber elastic body.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-178410 (JP, A) JP-A-4-107337 (JP, A) JP-A-1-85547 (JP, U) JP-A-2-107 18944 (JP, U) Jiko 3-11468 (JP, Y2) Jiko 62-46928 (JP, Y2) (58) Fields investigated (Int. Cl. ⁶ , DB name) F16F 9/00-9 / 58 B60G 13/00

Claims (1)

(57) [Scope of request for utility model registration] An outer peripheral portion attached to a vehicle body is substantially coaxial with an outer member attached to a vehicle body, wherein an opening peripheral portion of the first member and the second member are joined in an overlapping state to form a storage space therein. And an elastic member interposed between the outer member and the inner member, wherein the inner member comprises an operating shaft of a shock absorber of the suspension mechanism. in the metal securing plate to be fixed, the substantially coaxially integrally resin the entire periphery of the outer peripheral portion of the stationary platen
Formed by injection molding, a first projecting portion facing the first member protrudes to one axial direction than the fixed plate, the resin
Almost coaxial with the entire circumference of the outer periphery of the fixed plate by injection molding
A suspension support , which is formed integrally and integrally, and comprises a second projecting portion projecting to the other side in the axial direction from the fixed plate and facing the second member.