• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A support plate (20) of a strut for supporting a spring in a vehicle suspension comprises an inner tubular portion (21) for mounting on an outer tube (11) of the strut and an annular portion ( 22) which forms an annular channel opening upwardly extending around the tubular portion (21). The two tubular (21) and annular (22) portions are integrally formed of a composite material consisting of a fiberglass reinforced PA polymer matrix.
    公开号:FR3057925A3
    申请号:FR1759893
    申请日:2017-10-20
    公开日:2018-04-27
    发明作者:Walter Bruno；Piero Antonio Conti；Giordano Greco
    申请人:Sistemi Sospensioni SpA；
    IPC主号:
    专利说明:

    The present invention relates to a support plate of a strut for supporting the spring of a vehicle suspension.
    The backing plate is intended, particularly, but not exclusively, to be used in a MacPherson type suspension. Alternatively, the backing plate may be used in a "coil spring over" type suspension (" coil Over ").
    The weight reduction of vehicle components has become increasingly important for both vehicle manufacturers and their suppliers, due to increasingly stringent regulations on reducing CO2 emissions from vehicles. For vehicle suspension components, it is also important to reduce the unsprung masses, that is to say those masses that move in solidarity with the wheels. In fact, a reduction in these weights ensures better comfort for the occupants and a better contact between tire and road, thus optimizing road holding and road safety.
    Suspension struts for conventional type suspensions include spring backing plates made of steel.
    In the field of suspension struts, substantial weight reduction can be achieved by adopting unconventional materials for the main components. In the case of suspension struts which are used in MacPherson suspensions, it is particularly advantageous to make the spring support plate of a composite material. The object of the present invention is to concretely reduce the weight of a spring support plate for a strut.
    This object and other objects and advantages are achieved, according to the invention, by a spring support plate of a suspension strut having the features specified in the description.
    In summary, it is proposed to provide a spring support plate for suspension struts having a radially inner tubular portion to be installed on an outer tube of the strut and a radially outer annular portion forming an annular channel opening towards the top that extends around the tubular portion. The two tubular and annular portions are integrally formed of a composite material consisting of a fiberglass-reinforced PA polymer matrix. The plate has a plurality of upper external reinforcing ribs which extend in a radial pattern in respective angularly spaced axial planes, the upper external reinforcing ribs connecting an upper portion of the tubular portion with the upper surface of the outer annular portion. . Preferably, the composite material is PA6-I GF40, wherein the glass fibers are present in a weight percentage of about 40%. A spring backing plate according to the present invention has a reduced weight of about 50% compared to the weight of an equivalent spring backing plate, of the conventional type, made of steel, with production costs at large scale comparable to conventional backing plates.
    The spring support plate of the present invention is particularly, but not exclusively, suitable for the mass production of vehicle segments A, B and C.
    According to one aspect of the invention, a strut support plate for a spring in a vehicle suspension comprises: a radially inner tubular portion to be installed on an outer tube of a strut, a radially outer annular portion forming an upwardly opening annular channel extending around the tubular portion, wherein the two tubular and annular portions are integrally formed of a composite material consisting of a fiberglass-reinforced PA polymer matrix, and wherein the tubular portion extends longitudinally between an upper edge and a lower edge, and the outer annular portion connects with the tubular portion about the latter along a junction area intermediate the upper edges and 1 |
    I lower, so as to define an upper portion of the tubular portion, above the outer annular portion, and a lower portion of the tubular portion, below the outer annular portion; characterized in that the plate has a plurality of upper external reinforcing ribs which extend in a radial pattern in angularly spaced axial planes, the upper external reinforcing ribs connecting the upper portion of the tubular portion with the upper surface. of the outer annular portion.
    Preferably, the composite material is PA6-I GF40 with glass fibers in a weight percentage of about 40%.
    Embodiments may provide for the tubular portion to have a generally cylindrical longitudinal internal through cavity defining a sequence of cylindrical wall segments interspersed with a plurality of longitudinal internal reinforcing ribs.
    Preferably, the upper outer ribs extend toward an angular sector of the outer annular portion where a peripheral edge is provided.
    The plate may include a plurality of lower outer reinforcing ribs which extend radially in respective angularly spaced axial planes, and connect the bottom of the tubular portion with the lower surface of the outer annular portion. The lower outer ribs may extend to an angular sector of the outer annular portion where a peripheral edge is provided.
    Embodiments may provide that the lower edge forms at least one anti-rotation recess or protuberance configured to engage at least one corresponding protuberance or recess of a support ring secured to the outer tube of the stent leg. suspension, so as to fix the angular position of the plate around the longitudinal axis of the strut.
    A through hole may be formed in the bottom of the outer annular portion for the discharge of water.
    One or more through holes may be formed in the outer annular portion to allow a band-shaped elastic interface member to be secured to be interposed between the suspension janibe spring and the plate.
    Preferably, the spring support plate is obtained by means of an injection molding process.
    Additional features and advantages of this invention will be apparent from the following detailed description, given purely by way of non-limiting example with reference to the accompanying drawings, in which: Figures 1 and 2 are perspective views, at various angles, of A suspension strut having a spring support plate according to an embodiment of the present invention; Fig. 3 is an enlarged vertical sectional view of the spring support plate of Figs. 1 and 2; Figure 4 is a top plan view of the plate of Figure 3; Figure 5 is a perspective view from the bottom of the plate of Figure 3; Figure 6 is a perspective view from above of the plate of Figure 3; and Figure 7 is a top perspective view of the plate similar to Figure 6 with the addition of another component.
    Referring initially to Figures 1 and 2, a suspension strut for a vehicle suspension, such as a MacPherson type, is indicated generally at 10.
    The general schema of the suspension strut shown in Figure 1 is considered generally known. Consequently, hereinafter in the present description, only the elements of importance and of specific interest in the sense of the implementation of the present invention will be described in detail. For the construction of parts and elements not shown in detail, reference may be made to any known type of MacPherson suspension. |
    A support plate 20 for the suspension spring (not shown) has a tubular portion 21, substantially central or radially inward, which is installed on the outer tube 11 of the strut, and a shaped annular portion. radially outer 22 of a receptacle or an annular cup opening upwards. The outer annular portion 22 forms a circular channel opening upwards surrounding the tubular portion 21.
    As used herein, terms and expressions indicating orientations such as "radial" or "longitudinal" or "axial" should be interpreted with reference to the longitudinal axis x of the strut.
    The plate 20 is preferably made of composite material PA6-I GF40, consisting of a polymer matrix PA reinforced with glass fibers with a percentage by weight of about 40%. In fact, experimental tests carried out by the applicant have shown particularly effective results in terms of structural strength, lightness and ease of assembly, with a percentage of glass fibers of about 40%.
    The plate 20 is made in one piece by a single injection molding operation.
    The outer annular portion 22 provides a vertical support surface and a radial or transverse confinement for the lower end of the suspension spring.
    The tubular portion 21 extends vertically or longitudinally between an upper edge 21a and a lower edge 21b. The outer annular portion 22 is connected in one piece with the tubular portion 21 around the latter, identifying a junction zone 21c whose vertical position is intermediate between the upper and lower edges 21a, 21b and varies around the tubular portion 21.
    Thus, an upper portion 21c of the tubular portion 21 is defined above the outer annular portion 22, and a lower portion 21d of the tubular portion 21 below the outer annular portion 22,
    The tubular portion 21 has a longitudinal internal through cavity 35, of generally cylindrical shape, defining a sequence of cylindrical wall segments 23 dotted with a plurality of longitudinal internal reinforcing ribs 24 which protrude towards the central longitudinal axes x.
    The ribs 24 extending around the cavity 35 of the tubular portion 21 cause an alternation of full and vacuum which elasticizes the clamping fit of the plate 20 with the outer tube 11 of the strut, thus facilitating execution of the same coupling.
    According to one embodiment, the plate 20 comprises a plurality of upper external reinforcing ribs 25 extending radially in angularly spaced axial planes, in the form of buttresses at the top of the plate (Figures 4, 6, 7). The upper external ribs 25 connect the upper part 21c of the tubular portion 21 with the upper surface of the outer annular portion 22.
    In the illustrated embodiment, the upper outer reinforcing ribs 25 extend above an angle which, in a plan view, is less than 180 ° and is positioned toward an angular sector of the outer annular portion 22 where a peripheral edge 26 is provided thereon. This sector identifies the specific bearing area of the last coil of the spring, for which a band-shaped elastic interface member 30 (FIG. 7), typically made of rubber, serves as a vibration-free support between the last coil of the spring. of the suspension and the upper surface of the annular portion of the plate. The band-shaped interface elastic member 30 may be attached to the plate by means of protuberances (not shown) which must couple to one or more through-holes 27 formed in the outer annular portion 22,
    A through hole 28 for the discharge of water may be formed at the bottom of the outer annular portion 22.
    According to one embodiment, the plate 20 comprises a plurality of lower external reinforcing ribs 29 extending radially, in the form of buttresses, in the lower part of the plate (FIG. 5). The lower outer reinforcement ribs 29 extend in respective angularly spaced axial planes, and connect the lower portion 21d of the tubular portion 21 with the lower surface of the outer annular portion 22.
    In the illustrated embodiment, the lower outer reinforcing ribs 29 extend over an angle which, in a plan view, is greater than 180 ° and is positioned toward an angular sector of the outer annular portion 22 where a peripheral edge 26 is provided above.
    In the illustrated embodiment, both the upper ribs 25 and the lower ribs 29 are preferably provided.
    The ribs help to provide resistance to mechanical stress equivalent to that offered by conventional steel plates. ! The correct and correct angular orientation of the plate on the outer tube of the strut can be obtained as follows. The lower edge 21b of the tubular portion may rest on a support ring 32, usually made of steel, secured to the outer tube 11 of the strut. The aforementioned subjection can be accomplished, for example, by welding the support ring 32 on the outer tube 11 of the strut.
    On the lower edge 21b of the tubular portion 21 of the plate, one or more edges 33 may be made, which can engage in corresponding recesses (illustrated in Figures 1 and 2) made on the surface | upper of the support ring 32. Said edges and said recesses confer the correct and stable angular orientation of the plate 20 relative to the tube of the strut and the brackets 34 and 36 connected thereto, guaranteeing stable positioning also vis-à-vis the direction of the vehicle.
    Optionally, as shown in the figures, the support ring 32, in addition to being welded to the tube of the strut, can also rest, via its lower surface, on the bracket 34, which serves to connect the tube II of the strut with the rod (not shown) of the vehicle anti-roll bar.
    Various aspects and embodiments of the backing plate have been described. It is understood that each embodiment can be combined with any other embodiment. The invention is furthermore not limited to the embodiments described, but may vary within the scope defined by the appended claims.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    A suspension strut support plate (20) for a spring in a vehicle suspension, comprising: a radially inner tubular portion (21) for mounting on an outer tube (11) of the strut, a ring portion radially outer portion (22) forming an upwardly opening annular channel extending around the tubular portion (21), wherein the two tubular (21) and annular portions (22) are formed integrally of a composite material consisting of a polymer matrix PA reinforced with glass fibers * and wherein the tubular portion (21) extends longitudinally between an upper edge (21a) and a lower edge (21b), and the outer annular portion (22); ) connects with the tubular portion (21) around the latter along a junction zone (21c) intermediate between the upper and lower edges (21a, 21b), so as to define an upper portion (21c) of the tubular portion ( 21) * above the outer annular portion (22), and a lower portion (21d) of the tubular portion (21), below the outer annular portion (22); characterized in that the plate (20) has a plurality of upper outer reinforcing ribs (25) which extend in a radial pattern, in respective angularly spaced axial planes, the upper external reinforcing ribs connecting the upper portion (21c ) of the tubular portion (21) with the upper surface of the outer annular portion (22).
    [2" id="c-fr-0002]
    The backing plate of claim 1, wherein the composite material is PA6-I GF40 with glass fibers in a weight percentage of about 40%.
    [3" id="c-fr-0003]
    3. Support plate according to claim 1 or 2, wherein the tubular portion (21) has a generally cylindrical internal longitudinal through-cavity (35) defining a sequence of cylindrical wall segments (23) interspersed with a plurality of longitudinal internal reinforcing ribs (24).
    [4" id="c-fr-0004]
    The backing plate of claim 1, wherein the upper outer ribs (25) extend toward an angular sector of the outer annular portion (22) where a peripheral edge (26) is provided,
    [5" id="c-fr-0005]
    A bearing plate according to claim 1 or 3, wherein the plate (20) has a plurality of lower outer reinforcing ribs (29) which extend radially in respective angularly spaced axial planes and connect the bottom ( 21d) of the tubular portion (21) with the lower surface of the outer annular portion (22).
    [6" id="c-fr-0006]
    The backing plate of claim 5, wherein the lower outer ribs (29) extend toward an angular sector of the outer annular portion (22) where a peripheral edge (26) is provided.
    [7" id="c-fr-0007]
    The backing plate of claim 1, wherein the lower edge (21b) forms at least one recess or protrusion antirotation configured to engage with at least one protrusion or corresponding recess of a support ring ( 32) secured to the outer tube (11) of the strut, so as to fix the angular position of the plate (20) about the longitudinal axis (x) of the strut.
    [8" id="c-fr-0008]
    8. Support plate according to any of the preceding claims, having a through-hole (28) formed in the bottom of the outer annular portion (22) for draining water.
    [9" id="c-fr-0009]
    A backing plate according to any one of the preceding claims, having one or more through holes (27) formed in the outer annular portion (22) to allow a resilient strip-like interface member (30) to be secured to the outer annular portion (22). to be interposed between the suspension leg spring and the plate (20). I
    [10" id="c-fr-0010]
    10. Support plate according to any one of the claims | above, manufactured by an injection molding process.
    类似技术:
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    FR3075104A1|2019-06-21|SPRING SUPPORT DEVICE
    EP1443239A1|2004-08-04|Hydraulic vibration isolating joint with axial end-stops, a vehicle equipped with such a joint and manufacturing method for such a joint
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    同族专利:
    公开号 | 公开日
    DE202017106124U1|2017-12-06|
    CN207916486U|2018-09-28|
    IT201600106303A1|2018-04-21|
    BR202017022646U2|2018-06-12|
    FR3057925B3|2018-12-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    WO2020115388A1|2018-12-05|2020-06-11|Coparl|Shock absorber body for vehicle front-axle shock absorber|FR2799693B1|1999-10-14|2002-01-25|Peugeot Citroen Automobiles Sa|LOWER SUPPORT DEVICE FOR SUSPENSION SPRING, ESPECIALLY AUTOMOTIVE|
    FR2809675B1|2000-05-30|2002-08-16|Roulements Soc Nouvelle|SUSPENSION STOP DEVICE|
    DE10124976C2|2001-05-21|2003-11-06|Daimler Chrysler Ag|Spring pad|
    JP2003343634A|2002-05-24|2003-12-03|Showa Corp|Dust cover receiving structure for shock absorber|
    US7655719B2|2004-07-13|2010-02-02|Cool Options, Inc.|Thermally conductive polymer compositions having moderate tensile and flexural properties|
    US8196941B2|2010-05-03|2012-06-12|Tenneco Automotive Operating Company Inc.|Strut assembly having multi-piece spring seat|
    JP6240442B2|2013-09-06|2017-11-29|株式会社ショーワ|Spring seat|
    US9802454B2|2014-07-28|2017-10-31|Tenneco Automotive Operating Company Inc.|Plastic spring seat having integrated crash member|
    US9849746B2|2014-11-04|2017-12-26|Tenneco Automotive Operating Company Inc.|Impact reinforced composite spring seat for a shock absorber|DE112019006241T5|2018-12-17|2021-08-26|Kyb Corporation|Spring guide and suspension device|
    CN111795090A|2020-06-24|2020-10-20|桐乡市博达金属压铸有限公司|Piston type brake chamber parking cavity spring positioning system|
    法律状态:
    2018-09-19| PLFP| Fee payment|Year of fee payment: 2 |
    2019-09-18| PLFP| Fee payment|Year of fee payment: 3 |
    2020-09-17| PLFP| Fee payment|Year of fee payment: 4 |
    2021-09-21| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    IT102016000106303A|IT201600106303A1|2016-10-21|2016-10-21|Spring support plate for structural shock absorber.|
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