EP0051095A1
Expired / Lapsed
EP
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A combined seat back angle adjusting and angular vibration isolating mechanism for a vehicle seat
Assignee: Honeywell UOP LLC
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Filing: 1980-11-05
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Granted: —
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Expires: 2000-11-05
Abstract
Abstract An angular vibration isolating mechanism (10) is provided for a vehicle seat comprising a seat frame (16), a seat cushion (14) and a seat back (12), and this mechanism may be combined with a mechanism for adjusting the angle of the seat bapk. Eccentrically mounted cylindrically shaped cams (38) located at each side of the seat back (12) can be adjustably rotated around a shaft (32) within a guide channel (28) carried by the seat back (12). The cams (38) are positioned at a distance from a pivot axis (22) on the seat frame (16) around which the seat back (12) can tilt in order to adjust the angle of tilt. The flange (42) of each of the guide channels (28) is spaced from its respective cam (38) by a resilient means such as a thick pad (41) of elastomeric material which fills the space between the cam and the flange. The elastomeric pads (41) are compressed as the seat back (12) is forced forwardly against the seat occupant's back due to vehicle vibration, thus permitting the seat back to be driven rearwardly while the occupant's position in space remains relatively fixed.
Inventors
- 👤 Harvey Nick Tengler
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 21:01
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/24; B60N2/38; B60N2/02; B60N2/22; B60N2/2218
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
127 words
An angular vibration isolating mechanism for the seat back of a vehicle seat comprising a seat frame (16), a seat bottom cushion (14) carried by the seat frame (16), a seat back (12) and pivot means (22) for pivotally mounting the seat back (12) for angular tilting movement relative to the seat frame (16), characterized by resilient means (41) engageable with the seat back (12) for normally biasing the seat back (12) to a predetermined angular position, said resilient means (41) being deflectable by the forces developed between the seat back (12) and the back of an occupant of the seat by fore and aft or pitching type vehicular vibrations to cause said seat back to tilt rearwardly when the vibration force is in a forward direction.
Claim 2
Dependent Claim
127 words
An angular vibration isolating mechanism for the seat back of a vehicle seat comprising a seat frame (16), a seat bottom cushion (14) carried by the seat frame (16), a seat back (12) and pivot means (22) for pivotally mounting the seat back (12) for angular tilting movement relative to the seat frame (16), characterized by resilient means (41) engageable with the seat back (12) for normally biasing the seat back (12) to a predetermined angular position, said resilient means (41) being deflectable by the forces developed between the seat back (12) and the back of an occupant of the seat by fore and aft or pitching type vehicular vibrations to cause said seat back to tilt rearwardly when the vibration force is in a forward direction.
Claim 3
Dependent Claim
37 words
A vibration isolating mechanism according to claim 1, characterized in that said resilient means are spring members which are positioned adjacent side portions of the seat and between the seat frame (16) and the seat back (12).
Claim 4
Dependent Claim
201 words
A combined seat back angle adjusting and angular vibration isolating mechanism for a vehicle seat comprising a seat frame (16), a seat bottom cushion (14) carried by the seat frame (16),a seat back (12) and pivot means (22) on the seat frame (16) and the seat back (12) for pivotally mounting the seat back (12) for angular tilting movement relative to the seat frame (16), angular adjustment means mounted on the seat frame (16) and the seat back (12) at a location spaced from the pivot means (22) selectively to adjust the normal angular position of the seat back (12) relative to the seat frame (16) in a predetermined adjustment range, characterized in that said angular adjustment means includes a pair of rigid, cooperating contacting elements (38, 43) at each side of said seat back (12) which limit forward movement of the seat back (12) in any position of adjustment, said angular adjustment means further including resilient means (41) for permitting a limited amount of angular rotation of said seat back (12) in a rearward direction when said seat back (12) is driven against the back of an occupant of the seat by fore and aft or pitching type vehicular vibrations.
Claim 5
Dependent Claim
201 words
A combined seat back angle adjusting and angular vibration isolating mechanism for a vehicle seat comprising a seat frame (16), a seat bottom cushion (14) carried by the seat frame (16),a seat back (12) and pivot means (22) on the seat frame (16) and the seat back (12) for pivotally mounting the seat back (12) for angular tilting movement relative to the seat frame (16), angular adjustment means mounted on the seat frame (16) and the seat back (12) at a location spaced from the pivot means (22) selectively to adjust the normal angular position of the seat back (12) relative to the seat frame (16) in a predetermined adjustment range, characterized in that said angular adjustment means includes a pair of rigid, cooperating contacting elements (38, 43) at each side of said seat back (12) which limit forward movement of the seat back (12) in any position of adjustment, said angular adjustment means further including resilient means (41) for permitting a limited amount of angular rotation of said seat back (12) in a rearward direction when said seat back (12) is driven against the back of an occupant of the seat by fore and aft or pitching type vehicular vibrations.
Claim 6
Dependent Claim
89 words
A mechanism according to claim 3, characterized in that said resilient means comprises a spring member which normally biases said pair of rigid cooperating contacting elements (38, 43) into contact with each other, one of said contacting elements (43) being integral with said seat back (12) and the other (38) being integral with said seat frame (16), said contacting elements (38, 43) being separable with one of them compressing the spring member to permit said limited degree of angular rotation of said seat back (12) in a rearward direction.
Claim 7
Dependent Claim
54 words
A mechanism according to claim 4, characterized in that said one contacting element (43) comprises the forward wall portion of a channel-shaped member (28, 28') having a pair of opposed, parallel wall portions (42, 43), the spring member being mounted between the rearward wall portion (42) and the other (38) of said contacting elements.
Claim 8
Dependent Claim
56 words
A mechanism according to claim 5, characterized in that said other (38) of said contacting elements is a cylindrically shaped member which is eccentrically mounted on an axis (32) which is rotationally adjustable to selectively adjust the normal angular position of said seat back (12) relative to said seat frame (16) in said predetermined adjustment range.
Claim 9
Dependent Claim
20 words
A mechanism according to any of claims 2 to 6, characterized in that said spring members are elastomeric pads (41).
Claim 10
Dependent Claim
26 words
A mechanism according to claim 7, characterized in that said elastomeric pads (41) have a Shore A hardness of from 35 to 70, preferably about 40.
Claim 11
Dependent Claim
26 words
A mechanism according to claim 7 or 8, characterized in that said elastomeric pads (41) are slightly compressed or preloaded when said seat is not occupied.
Claim 12
Dependent Claim
59 words
A mechanism according to claim 9, characterized in that said elastomeric pads (41) are sufficiently preloaded that the normal static loads exerted into the seat back (12) when the seat is comfortably occupied by a person weighing about 47.6 kg (105 pounds) or less will not be sufficient to overcome the preloading and to deflect the seat back (12).
References Cited (Backward Citations)
No citation records indexed.
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