KR102440003B1 - Suspension device for vehicle - Google Patents

Abstract

The present invention relates to a suspension device for a vehicle, comprising: a shock absorber part disposed between a wheel and a vehicle body to absorb shock while varying in length; a stopper part mounted on the shock absorber part; a seat part mounted on the stopper part; It is mounted on the part and includes a cover part to block the inflow of foreign substances by covering the shock absorber part, and it is possible to prevent wear and corrosion by contact between plastic materials.

Description

Suspension device for vehicle {SUSPENSION DEVICE FOR VEHICLE}

The present invention relates to a vehicle suspension device, and more particularly, to a vehicle suspension device capable of improving assembly properties and preventing corrosion.

In general, a vehicle is driven in various driving environments. A suspension device is installed in the vehicle to absorb the impact of the vehicle. In general straight driving at medium and low speeds, as the rigidity of the suspension device becomes weaker, the shock from the road surface is absorbed better and the riding comfort is improved. However, when braking, accelerating, or turning the vehicle, a tilting phenomenon of the vehicle occurs, so that as the rigidity of the suspension device increases, the riding comfort is improved.

In the related art, there is a problem in that some parts of the suspension device are corroded and thus a normal operation cannot be achieved. Therefore, there is a need to improve it.

Background art of the present invention is disclosed in Korean Patent Application Laid-Open No. 2007-0080028 (published on Aug. 09, 2007, title of the invention: MacPherson strut type suspension for vehicle).

The present invention has been devised to improve the above problems, and an object of the present invention is to provide a suspension device for a vehicle that improves assembly properties and prevents corrosion.

Suspension apparatus for a vehicle according to the present invention includes: a shock absorber portion disposed between a wheel and a vehicle body to absorb shock while varying the length; a stopper part mounted on the shock absorber part; a seat part mounted on the stopper part; and a cover part mounted on the seat part and blocking the inflow of foreign substances by covering the shock absorber part.

The sheet portion includes an inner skeleton of a metal material; And it characterized in that it comprises an external shape part of the plastic material surrounding the internal skeleton part.

The inner skeleton portion is characterized in that the insert injection molding into the outer shape.

The internal skeleton part is characterized in that the injection hole is formed.

The seat portion includes an upper seat portion through which the shock absorber passes, and on which the bearing portion is seated; a central sheet portion extending downward from the upper sheet portion; and a lower seat portion extending laterally from the lower end of the middle seat portion.

The seat portion protrudes to the inside of the central seat portion, characterized in that it further comprises a central projection to be inserted into the insertion groove formed on the outer surface of the stopper portion.

The seat part protrudes downwardly of the lower seat part, and it characterized in that it further comprises a lower protrusion part wound around the spring part elastically supporting the lower seat part.

The seat portion extends downwardly from the lower protrusion and further includes a lower hook portion to which the cover portion is caught and fixed.

The seat portion is disposed on the lower surface of the lower seat portion, characterized in that it further comprises a lower reinforcement portion in contact with the spring portion.

The lower reinforcement part is characterized in that it comprises a metal material.

It is characterized in that a corrosion prevention layer is formed on the outer surface of the lower reinforcement part.

A flat surface is formed on the bottom surface of the lower reinforcement part so as to be in surface contact with the spring part.

The lower surface of the lower reinforcing part is characterized in that a stepped jaw is formed so that the end of the spring part is caught.

The lower reinforcing part is characterized in that it is press-fitted to the bottom surface of the lower sheet part.

The lower reinforcement part is characterized in that the insert injection molding of the lower seat part.

The lower reinforcing portion includes a reinforcing upper plate portion which is insert-molded into the lower sheet portion; a reinforcing middle plate portion extending downwardly from the reinforcing upper plate portion; and a reinforcing lower plate portion extending laterally from the lower end of the reinforcing middle plate portion to be adjacent to the bottom surface of the lower sheet portion, the end portion of which is insert-molded into the lower protrusion portion.

The lower reinforcing portion includes a reinforcing circumferential portion surrounding the lower protrusion; and a reinforcing extension portion extending laterally from the reinforcing circumferential portion to be adjacent to a bottom surface of the lower sheet portion, and a coupling hole portion to which the lower sheet portion is introduced and coupled is formed.

In the suspension device for a vehicle according to the present invention, since the seat part includes an internal skeleton part made of metal and an external shape part made of a plastic material that surrounds the internal skeleton part, it is possible to prevent wear of the contact bearing part while maintaining rigidity.

In the suspension device for a vehicle according to the present invention, the lower hook part is hook-coupled to the cover part, so that assembly of the cover part can be improved.

In the suspension device for a vehicle according to the present invention, since the lower reinforcement portion is disposed on the bottom surface of the lower seat portion, it is possible to prevent wear of the lower seat portion due to direct contact between the spring portion and the lower seat portion.

The suspension device for a vehicle according to the present invention may prevent corrosion of the lower reinforcing portion by forming a corrosion-preventing layer on the outer surface of the lower reinforcing portion.

1 is a diagram schematically illustrating a vehicle suspension device according to an embodiment of the present invention.
FIG. 2 is a diagram schematically illustrating a coupling relationship between an internal skeleton and an external shape in the suspension device for a vehicle according to an embodiment of the present invention. Referring to FIG.
3 is a cross-sectional view schematically illustrating a shape of a seat portion in a vehicle suspension device according to an embodiment of the present invention.
4 is a cross-sectional view schematically showing a lower reinforcing part in a vehicle suspension device according to an embodiment of the present invention.
5 is a view schematically illustrating a state in which a flat surface is formed on a bottom surface of a lower reinforcement part in the suspension apparatus for a vehicle according to an embodiment of the present invention.
FIG. 6 is a view schematically illustrating a state in which a stepped jaw is formed on a lower surface of a lower reinforcement part in the suspension device for a vehicle according to an embodiment of the present invention.
7 is a view schematically illustrating a state in which the lower reinforcement part is press-fitted to the lower seat part and coupled to the suspension device for a vehicle according to an embodiment of the present invention.
8 is a view schematically showing a first embodiment of the lower reinforcement part to be insert-molded in the vehicle suspension device according to an embodiment of the present invention.
8 is a view schematically showing a first embodiment of the lower reinforcement part to be insert-molded in the vehicle suspension device according to an embodiment of the present invention.
9 is a view schematically showing a second embodiment of the lower reinforcement part to be insert-molded in the vehicle suspension device according to an embodiment of the present invention.

Hereinafter, an embodiment of a suspension device for a vehicle according to the present invention will be described with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users and operators. Therefore, definitions of these terms should be made based on the content throughout this specification.

1 is a diagram schematically illustrating a vehicle suspension device according to an embodiment of the present invention. Referring to FIG. 1 , a vehicle suspension device 1 according to an embodiment of the present invention includes a shock absorber unit 10 , a stopper unit 20 , a seat unit 30 , and a cover unit 40 . do.

The shock absorber unit 10 is disposed between the wheel 100 and the vehicle body 200 and absorbs shock while varying in length. For example, the shock absorber unit 10 includes a cylinder unit 11 and a rod unit 12 , the cylinder unit 11 is connected to the wheel 100 , and the rod unit 12 is connected to the vehicle body 200 . can be connected In the above state, when the wheel 100 moves up and down, the rod part 12 is inserted into the cylinder part 11 to absorb the shock transmitted to the vehicle body 200 .

The stopper unit 20 is mounted on the shock absorber unit 10 . For example, the stopper unit 20 may be made of a urethane material, and may be mounted on the rod unit 12 to limit the movement of the rising cylinder unit 11 .

The seat part 30 is mounted on the stopper part 20 . For example, the seat part 30 may be coupled to the rod part 12 . The bearing part 50 may be seated on the upper surface of the seat part 30 , and the upper end of the spring part 60 may be supported on the lower surface of the seat part 30 .

The cover part 40 covers the shock absorber part 10 and is mounted on the seat part 30 to block the inflow of foreign substances. For example, the cover part 40 is made of a plastic material, and has a corrugated tube shape so that the length can be varied. A spring part 60 is disposed on the outside of the cover part 40 , and the lower end of the cover part 40 and the spring part 60 may be coupled to a support plate (not shown) formed on the side surface of the cylinder part 11 . have.

FIG. 2 is a diagram schematically illustrating a coupling relationship between an internal skeleton and an external shape in the suspension device for a vehicle according to an embodiment of the present invention. Referring to FIG. 1 and 2 , the seat part 30 according to an embodiment of the present invention includes an internal skeleton part 31 and an external shape part 32 . The inner skeleton part 31 is made of a metal material. The outer shape part 32 surrounds the internal skeleton part 31 and is made of a plastic material.

Since the outer shape part 32 is made of a plastic material, even if the bearing part 50 made of a plastic material seated on the upper surface of the seat part 30 and the external shape part 32 come into contact with each other, it is worn by homogeneous contact. can be suppressed.

The inner skeleton part 31 is insert injection molded into the outer shape part 32 . At this time, the injection hole part 33 is formed in the internal skeleton part 31 . For this reason, in the insert injection molding process, the plastic material covers the surface of the inner skeleton part 31 , but they are connected to each other through the injection hole part 33 , so that coupling force can be improved.

3 is a cross-sectional view schematically illustrating a shape of a seat portion in a vehicle suspension device according to an embodiment of the present invention. 1 to 3 , the seat portion 30 according to an embodiment of the present invention includes an upper seat portion 71 , a middle seat portion 72 , and a lower seat portion 73 . The upper seat part 71, the middle seat part 72, and the lower seat part 73 are the shapes of the external shape part 32, and the internal skeleton part 31 may be built in them. .

The upper sheet portion 71 has a circular plate shape with an open central portion, and the rod portion 12 of the shock absorber 10 passes through the central portion. The bearing part 50 is seated on the upper surface of the upper seat part 71 .

The middle seat portion 72 extends downward from the upper seat portion 71 . For example, the middle seat portion 72 may extend downward from the outer end of the upper seat portion 71 .

The lower seat portion 73 extends laterally from the lower end of the middle seat portion 72 . For example, the lower seat portion 73 may extend outwardly from the lower end of the middle seat portion 72 . To prevent corrosion due to accumulation of foreign substances such as moisture on the upper side of the lower sheet portion 73 , the lower sheet portion 73 may be formed to have a horizontal or inclined plane.

The seat portion 30 according to an embodiment of the present invention may further include a central protrusion 74 . The central protrusion 74 may protrude inward of the central seat portion 72 and be inserted into the insertion groove 21 formed on the outer surface of the stopper portion 20 . The central protrusion 74 is inserted into the insertion groove portion 21 , and the seat portion 30 can be maintained in a coupled state to the stopper portion 20 .

The seat portion 30 according to an embodiment of the present invention may further include a lower protrusion 75 . The lower protrusion 75 protrudes below the lower seat portion 73 and is wound around the spring portion 60 that elastically supports the lower seat portion 73 .

The seat portion 30 according to an embodiment of the present invention may further include a lower hook portion 76 . The lower hook part 76 extends downward from the lower protrusion part 75, and the cover part 40 is latched and fixed. As an example, the lower hook part 76 may have a hook shape at the lower end, and the upper end of the cover part 40 having a corrugated tube shape may be caught by the lower hook part 76 to maintain a coupled state. The lower hook portion 76 may have its own elasticity by being formed to have a thin thickness.

4 is a cross-sectional view schematically showing a lower reinforcing part in a vehicle suspension device according to an embodiment of the present invention. 3 and 4 , the seat part 30 according to an embodiment of the present invention may further include a lower reinforcement part 77 . The lower reinforcing part 77 is disposed on the bottom surface of the lower seat part 73 , and comes in contact with the spring part 60 to prevent wear of the lower seat part 73 .

The lower reinforcement part 77 may include a metal material. A corrosion prevention layer 78 is formed on the outer surface of the lower reinforcing portion 77 made of a metal material to prevent corrosion of the lower reinforcing portion 77 . The anti-corrosion layer 78 may be galvanized.

5 is a view schematically illustrating a state in which a flat surface is formed on a bottom surface of a lower reinforcement part in the suspension apparatus for a vehicle according to an embodiment of the present invention. Referring to FIGS. 3 and 5 , a flat surface 771 is formed on the bottom surface of the lower reinforcement part 77 so as to be in surface contact with the spring part 60 .

FIG. 6 is a view schematically illustrating a state in which a stepped jaw is formed on a lower surface of a lower reinforcement part in the suspension device for a vehicle according to an embodiment of the present invention. Referring to FIGS. 3 and 6 , a stepped protrusion 772 may be formed on the bottom surface of the lower reinforcing part 77 to catch the end of the spring part 60 . The end of the spring unit 60 may be caught by the stepped jaw 772 to suppress the flow of the spring unit 60 .

7 is a view schematically illustrating a state in which the lower reinforcement part is press-fitted to the lower seat part and coupled to the suspension device for a vehicle according to an embodiment of the present invention. Referring to FIG. 7 , the lower reinforcement part 77 according to an embodiment of the present invention is press-fitted to the bottom surface of the lower sheet part 73 . For example, the lower reinforcing part 77 may be disposed on the bottom surface of the lower sheet part 73 and then press-fitted into the lower sheet part 73 made of a plastic material through press working.

8 is a view schematically showing a first embodiment of the lower reinforcement part to be insert-molded in the suspender device for a vehicle according to an embodiment of the present invention, Figure 9 is an insert in the suspender device for a vehicle according to an embodiment of the present invention It is a view schematically showing a second embodiment of the lower reinforcement to be molded. 8 and 9, the lower reinforcement part 77 made of a metal material is insert injection molding into the lower sheet part 73 made of a plastic material.

In a first embodiment, the lower reinforcing part 77 may include a reinforcing upper plate part 771 , a reinforcing middle plate part 772 , and a reinforcing lower plate part 773 (see FIG. 8 ). The reinforcing upper plate portion 771 has a disk shape with an open central portion and may be insert-molded into the lower sheet portion 73 . The reinforcing middle plate portion 772 extends downward from the outer end of the reinforcing upper plate portion 771 . The lower end of the reinforcing middle plate portion 772 may be exposed to the outside. The reinforcing lower plate part 773 is extended laterally from the lower end of the reinforcing middle plate part 772 to be adjacent to the bottom surface of the lower sheet part 73 , and the end is insert-molded into the lower protrusion part 75 . A reinforcing lower plate portion 773 is disposed below the reinforcing upper plate portion 771 , and a portion exposed to the outside may be in contact with the spring portion 60 .

In a second embodiment, the lower reinforcing portion 77 may include a reinforcing circumferential portion 775 and a reinforcing extension portion 776 (see FIG. 9 ). The reinforcing circumferential portion 775 may have a ring shape to surround the lower protrusion 75 . The reinforcing extension portion 776 may extend outwardly from the upper end of the reinforcing circumferential portion 775 to be adjacent to the bottom surface of the lower sheet portion 73 . A coupling hole part 777 for coupling the lower sheet part 73 made of a plastic material may be formed in the reinforcing extension part 776 .

The manufacturing and assembling process of the seat part in the suspension apparatus for a vehicle according to an embodiment of the present invention having the above structure will be described as follows.

The inner skeleton part 31 is insert injection-molded so that the outer shape part 32 made of a plastic material surrounds the inner skeleton part 31 made of a metal material. At this time, the outer shape part 32 includes an upper seat part 71 on which the bearing part 50 is seated, a central seat part 72 extending downward from the upper seat part 71, and a central seat part 72 . It includes a lower sheet portion 73 extending outward from the. The central protrusion 74 protrudes to the inside of the central seat 72, the lower protrusion 75 extends below the lower seat 73, and the lower hook 76 below the lower protrusion 75. is formed In addition, a lower reinforcing part 77 is disposed on the bottom surface of the lower seat part 73 . The lower reinforcing part 77 is press-fitted into the lower seat part 73 or insert injection-molded.

As described above, the center portion of the sheet portion 30 made of a metal material and a plastic material is opened and the rod portion 12 is penetrated. The seat part 30 passing through the rod part 12 is mounted on the stopper part 20 coupled to the rod part 12 .

When the seat portion 30 is mounted on the rod portion 12, the upper end of the cover portion 40 in the shape of a corrugated tube having a variable length is caught and fixed to the lower hook portion 76 to maintain the coupled state.

On the other hand, the bearing part 50 is seated on the upper seat part 71, and since the bearing part 50 and the upper seat part 71 include a plastic material, it is prevented that uneven wear occurs due to similar strength when in contact with each other. restrain

In addition, when the spring part 60 made of a metal material is in direct contact with the lower seat part 73 , wear of the lower seat part 73 may occur, but between the lower seat part 73 and the spring part 60 , a metal The lower reinforcing part 77 of the material is disposed to prevent damage to the lower seat part 73 .

In the vehicle suspension device 1 according to an embodiment of the present invention, the seat part 30 includes an inner skeleton part 31 made of a metal material and an outer shape part 32 made of a plastic material surrounding the inner skeleton part 31 . Therefore, rigidity can be maintained. In addition, since the bearing part 50 made of a plastic material is disposed on the upper side of the outer shape part 32 , it is possible to suppress wear between each other by contact between the same materials.

In the suspension device 1 for a vehicle according to an embodiment of the present invention, since the lower hook part 76 formed on the seat part 30 is hook-coupled to the upper end of the cover part 40 , the assembly of the cover part 40 . can be improved

In the vehicle suspension device 1 according to an embodiment of the present invention, the lower reinforcing part 77 is disposed on the bottom surface of the lower seat part 73 , so that the spring part 60 and the lower seat part 73 are in direct contact with each other. It is possible to prevent abrasion of the lower seat portion 73 by the

In the suspension device 1 for a vehicle according to an embodiment of the present invention, the corrosion prevention layer 78 is formed on the outer surface of the lower reinforcement part 77 to prevent corrosion of the lower reinforcement part 77 .

Although the present invention has been described with reference to the embodiment shown in the drawings, this is merely exemplary, and those of ordinary skill in the art to which various modifications and equivalent other embodiments are possible. will understand Accordingly, the true technical protection scope of the present invention should be defined by the following claims.

10: shock absorber part 20: stopper part
21: insertion groove 30: seat portion
31: internal skeleton part 32: external shape part
40: cover part 50: bearing part
60: spring part 71: upper seat part
72: middle seat portion 73: lower seat portion
74: central protrusion 75: lower protrusion
76: lower hook part 77: lower reinforcement part
78: anti-corrosion layer 100: wheel
200: body 771: reinforcing upper plate part
772: reinforcing middle plate part 773: reinforcing lower plate part
775: reinforcement circumferential part 776: reinforcement expansion part
777: coupling hole

Claims (16)

a shock absorber unit disposed between the wheel and the vehicle body to absorb shock while varying the length;
a stopper part mounted on the shock absorber part;
a seat portion mounted to the stopper portion; and
It is mounted on the seat portion and includes a cover portion for blocking the inflow of foreign substances by covering the shock absorber portion,
the sheet part
Internal skeleton made of metal; and
It includes an external shape part of a plastic material surrounding the internal skeleton part,
the sheet part
an upper seat part through which the shock absorber passes, the bearing part is seated;
a central sheet portion extending downward from the upper sheet portion;
a lower sheet portion extending laterally from the lower end of the middle sheet portion; and
It is disposed on the lower surface of the lower seat portion, and includes a lower reinforcement portion in contact with the spring portion elastically supporting the lower seat portion,
The suspension device for a vehicle, characterized in that a stepped jaw is formed on the bottom surface of the lower reinforcement part to catch the end of the spring part.
The method of claim 1,
The suspension device for a vehicle, characterized in that the inner skeleton is insert injection-molded into the outer shape.
3. The method of claim 1 or 2,
Suspension device for a vehicle, characterized in that the injection hole portion is formed in the inner skeleton portion.
delete According to claim 1, wherein the seat portion
The suspension device for a vehicle according to claim 1, further comprising a central projection which protrudes inwardly of the central seat portion and is inserted into an insertion groove formed on an outer surface of the stopper portion.
According to claim 1, wherein the seat portion
The suspension device for a vehicle according to claim 1, further comprising a lower protrusion that protrudes downwardly of the lower seat portion and is wound around the spring portion.
7. The method of claim 6, wherein the seat portion
and a lower hook portion extending downwardly from the lower protrusion and locking the cover portion.
delete The method of claim 1,
The lower reinforcement part is a vehicle suspension device, characterized in that it comprises a metal material.
10. The method of claim 9,
A vehicle suspension device, characterized in that a corrosion-preventing layer is formed on an outer surface of the lower reinforcement part.
The method of claim 1,
A vehicle suspension device, characterized in that a flat surface is formed on a bottom surface of the lower reinforcing part so as to be in surface contact with the spring part.
delete 10. The method of claim 1 or 9,
The lower reinforcement portion is a vehicle suspension device, characterized in that the press-fit to the bottom surface of the lower seat portion.
10. The method of claim 1 or 9,
The lower reinforcement part is a vehicle suspension device, characterized in that the insert injection molding of the lower seat part.
15. The method of claim 14, wherein the lower reinforcement portion
a reinforcing upper plate part which is insert-molded into the lower sheet part;
a reinforcing middle plate portion extending downwardly from the reinforcing upper plate portion; and
and a reinforcing lower plate portion extending laterally from a lower end of the reinforcing middle plate portion to be adjacent to a bottom surface of the lower seat portion, the end portion of which is insert-molded into a lower protrusion wound around the spring portion.
15. The method of claim 14, wherein the lower reinforcement portion
a reinforcing perimeter surrounding the lower protrusion; and
and a reinforcing extension portion extending laterally from the reinforcing circumference portion to be adjacent to a bottom surface of the lower seat portion, and a coupling hole portion to which the lower seat portion is introduced and coupled is formed.

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