EP0563709B1
Expired / Lapsed
EP
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A seat with improved lumbar support, particularly for motor vehicles
Assignee: Fiat Auto SpA
•
Filing: 1993-03-19
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Granted: 1996-10-02
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Expires: 2013-03-19
Abstract
No abstract record available.
Inventors
- 👤 Antonio Dal Monte
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 12:00
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/64; B60N2/66; B60N2/666; B60N2/667; B60N2/6671; B60N2/6673
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
85 words
A seat including a backrest (B) with a support element (4) for cooperating with and supporting the lumbar portion of the occupant's back, said support element (4) having associated movement means (12, 13; 12a, 12b; 13a, 13b) for selectively varying the vertical position of the element (4) relative to the backrest (B), characterised in that the lumbar support element (4) is supported in the backrest (1) with the interposition of means (5) for enabling the element (4) to pivot generally about a substantially horizontal axis.
Claim 2
Dependent Claim
19 words
A seat according to Claim 1, characterised in that the lumbar support element (4) is generally hourglass- or butterfly-shaped.
Claim 3
Dependent Claim
30 words
A seat according to any one of the preceding claims, characterised in that the element (4) carries associated resilient means (5) for supporting the element (4) in the backrest (B).
Claim 4
Dependent Claim
28 words
A seat according to any one of the preceding claims, characterised in that the movement means include at least one flexible-cable control (12, 13; 12a, 12b; 13a, 13b).
Claim 5
Dependent Claim
24 words
A seat according to Claim 4, characterised in that the movement means (12, 13) act in a generally central position of the backrest (B).
Claim 6
Dependent Claim
38 words
A seat according to Claim 5, characterised in that the movement means (12, 13) are associated with means for distributing the forces (7) applied by the movement means (12) to the lumbar support element (4) as a whole.
Claim 7
Dependent Claim
51 words
A seat according to any one of the preceding claims, characterised in that the support element (4) has associated resilient means (9) for biasing it towards an end position of its vertical adjustment movement, and in that the movement means (12, 13) act in opposition to the resilient biasing means (9).
Claim 8
Dependent Claim
42 words
A seat according to any one of the preceding claims, characterised in that the movement means include at least two flexible-cable controls (12a,12b) which operate in a complementary manner in order to move the lumbar support element (4) upwards and downwards, respectively.
Claim 9
Dependent Claim
39 words
A seat according to any one of the preceding claims, characterised in that the movement means include two movement units (12a, 12b; 13a, 13b) acting on different portions of the lumbar support element (4) in a generally symmetrical arrangement.
Claim 10
Dependent Claim
20 words
A seat according to any one of the preceding claims, characterised in that the movement means are operated manually (15).
Claim 11
Dependent Claim
20 words
A seat according to any one of Claims 1 to 9, characterised in that the movement means are motor-driven (15).
Claim 12
Dependent Claim
62 words
A seat according to any one of Claims 1 to 9, characterised in that, in addition to the movement means (12a, 13a; 12b, 13b) for selectively controlling the vertical position of the lumbar support element (4), the lumbar support element (4) is associated with further movement means (16) for selectively varying at least one further characteristic of the lumbar support element (4).
Claim 13
Dependent Claim
54 words
A seat according to Claim 12, characterised in that the further movement means (16) can selectively vary at least one characteristic of the lumbar support element (4) selected from the group constituted by: - the fore-and-aft position of the lumbar support element (4), - the degree of concavity of the lumbar support element (4).
Claim 14
Dependent Claim
34 words
A seat according to Claim 12 or Claim 13, characterised in that the movement means (12a, 13a; 12b, 13b) and the further movement means (16) carry associated drive means (15a, 17) of different kinds.
Claim 15
Dependent Claim
30 words
A seat according to any one of the preceding claims, characterised in that the lumbar support element (4) is fixed to a mass of padding (18) of the backrest (B).
Claim 16
Dependent Claim
46 words
A seat according to Claim 15, characterised in that the padding (18) has grooves (19), preferably in its rear face, for facilitating the compression and extension of the padding (18) as a result of the adjustment of the vertical position of the lumbar support element (4).
References Cited (Backward Citations)
No citation records indexed.
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