Title of Invention	ASSEMBLY FOR A VEHICLE SHOCK ABSORBER COMPRISING A SPRING AND A CHAMBER
Abstract	An assembly for vehicle shock absorber is disclosed which comprises a spring (32) and a chamber (16) supporting the spring, wherein the chamber comprises of two parts (18) facing one another or symmetrical to one another. The two parts (18) are arranged symmetrically to one another on either side of a vertical plane parallel to a driving direction of the vehicle. The assembly comprises a chamber support (6) to which the parts (18) are attached and the support (6) comprises a centering spigot (12). The assembly comprises a side rail (4) to which the chamber support (6) is attached and an comprises an anti-vibration filter (30) interposed between the chamber (16) and the spring (32).

Title of Invention

ASSEMBLY FOR A VEHICLE SHOCK ABSORBER COMPRISING A SPRING AND A CHAMBER

Abstract

An assembly for vehicle shock absorber is disclosed which comprises a spring (32) and a chamber (16) supporting the spring, wherein the chamber comprises of two parts (18) facing one another or symmetrical to one another. The two parts (18) are arranged symmetrically to one another on either side of a vertical plane parallel to a driving direction of the vehicle. The assembly comprises a chamber support (6) to which the parts (18) are attached and the support (6) comprises a centering spigot (12). The assembly comprises a side rail (4) to which the chamber support (6) is attached and an comprises an anti-vibration filter (30) interposed between the chamber (16) and the spring (32).

Full Text	ASSEMBLY FOR A VEHICLE SHOCK ABSORBER COMPRISING A SPRING AND A CHAMBER The invention relates to rear shock absorbers of automotive vehicles. Such shock absorbers fitted with a spring whose upper end is supported on a chamber connected to the vehicle body are known. The realization of this arrangement proves relatively costly in practice. An aim of the invention is to reduce the cost price of this assembly. To this end, the invention provides a chamber for the vehicle shock absorber spring comprising two identical parts. Thus, the two rear shock absorber chambers of a vehicle may be realized by means of four identical parts and made from the same tools. The number of part references is furthermore reduced. Furthermore, the entire structure is simplified. Lastly, the assembly of the various parts may be outsourced in such a manner that the assembly comprising the chamber is received in the factory ready to be mounted on the vehicle. The chamber according to the invention may furthermore have at least one of the following characteristics: - the chamber is made up of the two parts; - the two parts face one another; and - the two parts are symmetric to one another. The invention also provides an assembly for vehicle shock absorber comprising a spring and a chamber for supporting the spring in accordance with the invention. The assembly according to the invention may furthermore have at least one of the following characteristics: -1- - the two parts are arranged symmetrically to one another on either side of a vertical plane parallel to a driving direction of the vehicle - it comprises a chamber support to which the parts are attached - the support has a centering spigot - it comprises a side rail to which the chamber support is attached; and - it comprises an anti-vibration filter interposed between the chamber and the spring. Other characteristics and advantages of the invention will become more apparent in the following description of a preferred embodiment given for illustration purposes only, and in a non-restrictive manner with reference to the accompanying drawings in which: Figure 1 is a perspective view of the shock absorber chamber in a preferred embodiment of the invention, attached to a side rail; Figure 2 is an exploded perspective view of the chamber, in Figure 1 with its support; Figure 3 is an elevation of the chamber in Figure 1; Figure 4 is an exploded bottom view of the chamber in Figure 1 with its support; and Figure 5 shows the relative arrangement of the chamber, the spring and the anti-vibration filter in the embodiment in Figure 1. We have illustrated in the figures a shock absorber assembly according to a preferred embodiment of the invention. This shock absorber assembly is intended for any of the rear wheels of an automotive vehicle. The shock absorber assemblies of both the wheels are similar. -2- The assembly 2 comprises a side rail 4 illustrated in detail in Figure 1 and schematically in Figure 2. This is a standard side rail and is used for producing the vehicle chassis. The left side rail will be associated with the left rear wheel and the right side rail will be associated with the right rear wheel. The shock absorber assembly comprises a chamber support 6 comprising a lower base 8 and two lateral sidewalls 10a and 10b. The base 8 is in an essentially horizontal plane. It has a flat rectangular form, elongated along the driving direction of the vehicle. The sidewalls 10a and 10b each have a flat form and extend vertically towards the top from the respective longitudinal edges of the base 8. The two sidewalls 10a and 10b face one another at a distance and are parallel to one another. The base 8 has a spigot 12 forming a relief that protrudes towards the bottom with respect to the lower side 14 of the base 8. This spigot has an overall flat circular form. The support 6 is thus arranged to define between the sidewalls a housing capable of receiving a part of the side rail 4 as illustrated in Figures 1 and 2, the lower side of the side rail facing the upper side of the base 8 and the lateral sides of the side rail facing the internal sides of the sidewalls 10a and 10b. The assembly 2 comprises a chamber 16. This chamber comprises two parts 18 which in this particular case form this chamber. The parts 18 are identical. They are furthermore symmetrical to one another with respect to a vertical plane along the driving direction of the vehicle, when the parts 18 are in mounting position. Each part 18 comprises a shell 20 whose surface is defined geometrically by a cylinder whose generatrices are shown in Figure 1. These generatrices are inclined laterally with respect to the vertical direction, towards the other part 18. The shell is limited at the top by an upper edge 22 essentially in a vertical plane and at the bottom by a lower edge 24 essentially in a horizontal plane. This edge has an arc-shaped median cut 26 intended to face the spigot 12. It also has two lateral lugs 27 intended to extend in surface contact with the lower side 14 of the base 8 of the chamber support 6. -3- The parts 18 are intended to be attached to the support 6 extending on either side of it, facing respectively the sidewalls 10a and 1Gb. The upper edge 22 of each part extends in surface contact with the external side of the corresponding sidewall whereas the lower edge 24 extends in surface contact with the lower side of the base 8. The shock absorber assembly includes furthermore an anti-vibration filter 30, for instance in rubber, illustrated in Figure 5. This filter has an overall form of revolving core recessed in the center of its upper side to receive the spigot 12 and exhibiting on the contrary a relief in the center of its lower side to facilitate the centering of the upper end of the shock absorber spring 32. The filter 30 is thus interposed between the assembly formed by the support 6 and the chamber 16 on the one hand and the spring 32 on the other hand, along the vertical direction. The lower edge 24 of the parts 18 thus forms an essentially plane horizontal support of round or oval shape intended for the filter 30, which serves as support for the upper end of the spring. The parts 18 are welded to the base 6 at two points 33 situated at the lower ends of the vertical edge 22. The same parts are welded by cutting 26 to the spigot 12 by means of a weld line. The support 6 is welded by each of its sidewalls to the side rail 4 by means of two points 34 which may also weld each part 18 to the support 6. As illustrated in Figures 2 and 3, the base 8 of the support 6 may be raised in its front and rear end zones. We may also modify the form of the upper edge 22 of each part 18 to give it optionally a curve shape, as illustrated in Figure 1 or a broken line shape, as illustrated in Figure 3. The filter 30 is positioned between the chamber 16 and the spring 32 without indexing insofar as it takes its final position when it is compressed by the spring. It is maintained in position by the pressure of the spring even in the presence of significant displacement. -4- An advantage of this arrangement is also that the spigot 12 is vertical to the side rail 4 in such a manner that the point of entry of the forces generated by the shock absorber on the chassis is under the side rail. As we can see, it is not necessary to displace the spigot with respect to the chamber 16 to achieve this result. The parts 18 and the support 6 may be made of stamped metal. Of course, various modifications may be made to the invention without departing from its scope. The weld spots 33 and 34 may be combined in such a manner that the same welding step realizes the attachments of the semi-chambers, the support 6 and the side rail 4. In the foregoing description, the invention has been described with reference to a specific exemplary embodiment thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the spirit and scope of the invention as set forth in the appended claims. The specification and drawings are, accordingly, to be regarded in an illustrative manner rather than in a restrictive sense. -5- WE CLAIM : 1. A chamber (16) for vehicle shock absorber spring (32), characterized in that it comprises of two identical parts (18). 2. A chamber according to the preceding claim, characterized in that it is made up of the two parts (18). 3. A chamber according to any one of the preceding claims, characterized in that the two parts (18) face one another. 4. A chamber according to any one of the preceding claims, characterized in that the two parts (18) are symmetrical to one another. * 5. An assembly for vehicle shock absorber comprising a spring (32) and a chamber (16) supporting the spring, characterized in that the chamber conforms to any one of the preceding claims. 6. An assembly according to the preceding claim, characterized in that the two parts (18) are arranged symmetrically to one another, on either side of a vertical plane parallel to a driving direction of the vehicle. 7. An assembly according to any one of the claims 5 or 6, characterized in that it comprises a chamber support (6) to which the parts (18) are attached. 8. An assembly according to the claim 7 characterized in that the support (6) comprises a centering spigot (12). 9. An assembly according to any one of the claims 7 or 8 characterized in that it comprises a side rail (4) to which the chamber support (6) is attached. -6- 10. An assembly according to any one of the claims 5 to 9, characterized in that it comprises an anti-vibration filter (30) interposed between the chamber (16) and the spring (32). -7-

Full Text

ASSEMBLY FOR A VEHICLE SHOCK ABSORBER COMPRISING A SPRING AND A CHAMBER
The invention relates to rear shock absorbers of automotive vehicles. Such shock absorbers fitted with a spring whose upper end is supported on a chamber connected to the vehicle body are known. The realization of this arrangement proves relatively costly in practice.
An aim of the invention is to reduce the cost price of this assembly.
To this end, the invention provides a chamber for the vehicle shock absorber spring comprising two identical parts.
Thus, the two rear shock absorber chambers of a vehicle may be realized by means of four identical parts and made from the same tools. The number of part references is furthermore reduced. Furthermore, the entire structure is simplified. Lastly, the assembly of the various parts may be outsourced in such a manner that the assembly comprising the chamber is received in the factory ready to be mounted on the vehicle.
The chamber according to the invention may furthermore have at least one of the following characteristics:
- the chamber is made up of the two parts;
- the two parts face one another; and
- the two parts are symmetric to one another.
The invention also provides an assembly for vehicle shock absorber comprising a spring and a chamber for supporting the spring in accordance with the invention.
The assembly according to the invention may furthermore have at least one of the following characteristics:
-1-

- the two parts are arranged symmetrically to one another on either side of a
vertical plane parallel to a driving direction of the vehicle
- it comprises a chamber support to which the parts are attached
- the support has a centering spigot
- it comprises a side rail to which the chamber support is attached; and
- it comprises an anti-vibration filter interposed between the chamber and the
spring.
Other characteristics and advantages of the invention will become more apparent in the following description of a preferred embodiment given for illustration purposes only, and in a non-restrictive manner with reference to the accompanying drawings in which:
Figure 1 is a perspective view of the shock absorber chamber in a preferred embodiment of the invention, attached to a side rail;
Figure 2 is an exploded perspective view of the chamber, in Figure 1 with its support;
Figure 3 is an elevation of the chamber in Figure 1;
Figure 4 is an exploded bottom view of the chamber in Figure 1 with its support; and
Figure 5 shows the relative arrangement of the chamber, the spring and the anti-vibration filter in the embodiment in Figure 1.
We have illustrated in the figures a shock absorber assembly according to a preferred embodiment of the invention. This shock absorber assembly is intended for any of the rear wheels of an automotive vehicle. The shock absorber assemblies of both the wheels are similar.
-2-

The assembly 2 comprises a side rail 4 illustrated in detail in Figure 1 and schematically in Figure 2. This is a standard side rail and is used for producing the vehicle chassis. The left side rail will be associated with the left rear wheel and the right side rail will be associated with the right rear wheel.
The shock absorber assembly comprises a chamber support 6 comprising a lower base 8 and two lateral sidewalls 10a and 10b. The base 8 is in an essentially horizontal plane. It has a flat rectangular form, elongated along the driving direction of the vehicle. The sidewalls 10a and 10b each have a flat form and extend vertically towards the top from the respective longitudinal edges of the base 8. The two sidewalls 10a and 10b face one another at a distance and are parallel to one another. The base 8 has a spigot 12 forming a relief that protrudes towards the bottom with respect to the lower side 14 of the base 8. This spigot has an overall flat circular form.
The support 6 is thus arranged to define between the sidewalls a housing capable of receiving a part of the side rail 4 as illustrated in Figures 1 and 2, the lower side of the side rail facing the upper side of the base 8 and the lateral sides of the side rail facing the internal sides of the sidewalls 10a and 10b.
The assembly 2 comprises a chamber 16. This chamber comprises two parts 18 which in this particular case form this chamber. The parts 18 are identical. They are furthermore symmetrical to one another with respect to a vertical plane along the driving direction of the vehicle, when the parts 18 are in mounting position. Each part 18 comprises a shell 20 whose surface is defined geometrically by a cylinder whose generatrices are shown in Figure 1. These generatrices are inclined laterally with respect to the vertical direction, towards the other part 18. The shell is limited at the top by an upper edge 22 essentially in a vertical plane and at the bottom by a lower edge 24 essentially in a horizontal plane. This edge has an arc-shaped median cut 26 intended to face the spigot 12. It also has two lateral lugs 27 intended to extend in surface contact with the lower side 14 of the base 8 of the chamber support 6.
-3-

The parts 18 are intended to be attached to the support 6 extending on either side of it, facing respectively the sidewalls 10a and 1Gb. The upper edge 22 of each part extends in surface contact with the external side of the corresponding sidewall whereas the lower edge 24 extends in surface contact with the lower side of the base 8.
The shock absorber assembly includes furthermore an anti-vibration filter 30, for instance in rubber, illustrated in Figure 5. This filter has an overall form of revolving core recessed in the center of its upper side to receive the spigot 12 and exhibiting on the contrary a relief in the center of its lower side to facilitate the centering of the upper end of the shock absorber spring 32. The filter 30 is thus interposed between the assembly formed by the support 6 and the chamber 16 on the one hand and the spring 32 on the other hand, along the vertical direction. The lower edge 24 of the parts 18 thus forms an essentially plane horizontal support of round or oval shape intended for the filter 30, which serves as support for the upper end of the spring.
The parts 18 are welded to the base 6 at two points 33 situated at the lower ends of the vertical edge 22. The same parts are welded by cutting 26 to the spigot 12 by means of a weld line.
The support 6 is welded by each of its sidewalls to the side rail 4 by means of two points 34 which may also weld each part 18 to the support 6.
As illustrated in Figures 2 and 3, the base 8 of the support 6 may be raised in its front and rear end zones. We may also modify the form of the upper edge 22 of each part 18 to give it optionally a curve shape, as illustrated in Figure 1 or a broken line shape, as illustrated in Figure 3.
The filter 30 is positioned between the chamber 16 and the spring 32 without indexing insofar as it takes its final position when it is compressed by the spring. It is maintained in position by the pressure of the spring even in the presence of significant displacement.
-4-

An advantage of this arrangement is also that the spigot 12 is vertical to the side rail 4 in such a manner that the point of entry of the forces generated by the shock absorber on the chassis is under the side rail. As we can see, it is not necessary to displace the spigot with respect to the chamber 16 to achieve this result.
The parts 18 and the support 6 may be made of stamped metal. Of course, various modifications may be made to the invention without departing from its scope.
The weld spots 33 and 34 may be combined in such a manner that the same welding step realizes the attachments of the semi-chambers, the support 6 and the side rail 4.
In the foregoing description, the invention has been described with reference to a specific exemplary embodiment thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the spirit and scope of the invention as set forth in the appended claims. The specification and drawings are, accordingly, to be regarded in an illustrative manner rather than in a restrictive sense.
-5-

WE CLAIM :
1. A chamber (16) for vehicle shock absorber spring (32), characterized in that it
comprises of two identical parts (18).
2. A chamber according to the preceding claim, characterized in that it is made up
of the two parts (18).
3. A chamber according to any one of the preceding claims, characterized in that
the two parts (18) face one another.
4. A chamber according to any one of the preceding claims, characterized in that
the two parts (18) are symmetrical to one another. *
5. An assembly for vehicle shock absorber comprising a spring (32) and a chamber
(16) supporting the spring, characterized in that the chamber conforms to any one of
the preceding claims.
6. An assembly according to the preceding claim, characterized in that the two
parts (18) are arranged symmetrically to one another, on either side of a vertical plane
parallel to a driving direction of the vehicle.
7. An assembly according to any one of the claims 5 or 6, characterized in that it
comprises a chamber support (6) to which the parts (18) are attached.
8. An assembly according to the claim 7 characterized in that the support (6)
comprises a centering spigot (12).
9. An assembly according to any one of the claims 7 or 8 characterized in that it
comprises a side rail (4) to which the chamber support (6) is attached.
-6-

10. An assembly according to any one of the claims 5 to 9, characterized in that it comprises an anti-vibration filter (30) interposed between the chamber (16) and the spring (32).
-7-

Documents:

03763-kolnp-2006 abstract.pdf

03763-kolnp-2006 claims.pdf

03763-kolnp-2006 correspondence others.pdf

03763-kolnp-2006 description(complete).pdf

03763-kolnp-2006 drawings.pdf

03763-kolnp-2006 form-1.pdf

03763-kolnp-2006 form-3.pdf

03763-kolnp-2006 form-5.pdf

03763-kolnp-2006 international publication.pdf

03763-kolnp-2006 internationalsearch authority report.pdf

03763-kolnp-2006 pct others.pdf

03763-kolnp-2006 priority document.pdf

03763-kolnp-2006-assignment.pdf

03763-kolnp-2006-correspondence-1.1.pdf

03763-kolnp-2006-g.p.a.pdf

3763-KOLNP-2006-(03-09-2013)-ABSTRACT.pdf

3763-KOLNP-2006-(03-09-2013)-AMANDED CLAIMS.pdf

3763-KOLNP-2006-(03-09-2013)-ANNEXURE TO FORM 3.pdf

3763-KOLNP-2006-(03-09-2013)-CORRESPONDENCE.pdf

3763-KOLNP-2006-(03-09-2013)-DESCRIPTION (COMPLETE).pdf

3763-KOLNP-2006-(03-09-2013)-DRAWINGS.pdf

3763-KOLNP-2006-(03-09-2013)-FORM-1.pdf

3763-KOLNP-2006-(03-09-2013)-FORM-2.pdf

3763-KOLNP-2006-(03-09-2013)-OTHERS.pdf

3763-KOLNP-2006-(03-09-2013)-PA.pdf

3763-KOLNP-2006-(03-09-2013)-PETITION UNDER RULE 137.1.pdf

3763-KOLNP-2006-(03-09-2013)-PETITION UNDER RULE 137.2.pdf

3763-KOLNP-2006-(03-09-2013)-PETITION UNDER RULE 137.pdf

3763-kolnp-2006-form 18.pdf

abstract-03763-kolnp-2006.jpg

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Patent Number

263915

Indian Patent Application Number

3763/KOLNP/2006

PG Journal Number

48/2014

Publication Date

28-Nov-2014

Grant Date

27-Nov-2014

Date of Filing

13-Dec-2006

Name of Patentee

RENAULT S.A.S.

Applicant Address

13-15 QUAI LE GALLO, F-92100 BOULOGNE BILLANCOURT, FRANCE

Inventors:

#	Inventor's Name	Inventor's Address
1	KOWALSKI , PHILIPPE	3-ALLEE MAURICE RAVEL, F-78180 MONTIGNY LE BRETONNEUX, FRANCE
2	DENIS,GERALD	12,ALLEE DES EPINS, F-78180 MONTIGNY LE BRETONNEUX, FRANCE

PCT International Classification Number

B60G15/06; B62D25/08

PCT International Application Number

PCT/FR2005/050361

PCT International Filing date

2005-05-25

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	0405896	2004-06-01	France