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An armrest structure includes a support and a body rotatably mounted on the support. The support includes a pair of protrusions and the body includes a notched channel for receiving the protrusions. By rotating the body on the support, the protrusions are repositioned in the notched channel between

An armrest structure includes a support and a body rotatably mounted on the support. The support includes a pair of protrusions and the body includes a notched channel for receiving the protrusions. By rotating the body on the support, the protrusions are repositioned in the notched channel between selected stable use positions. The notches are located on both sides of the channel such that the body can be located in a first position with the first surface on the body facing generally upwardly for use, and a second position with the second surface on the body facing generally upwardly for use. By varying the surfaces on the body, and also the engagement of the protrusion with the notched channel, various spacial positions and functional surfaces can be selectively positioned for use.

대표청구항 ▼

An armrest structure includes a support and a body rotatably mounted on the support. The support includes a pair of protrusions and the body includes a notched channel for receiving the protrusions. By rotating the body on the support, the protrusions are repositioned in the notched channel between

An armrest structure includes a support and a body rotatably mounted on the support. The support includes a pair of protrusions and the body includes a notched channel for receiving the protrusions. By rotating the body on the support, the protrusions are repositioned in the notched channel between selected stable use positions. The notches are located on both sides of the channel such that the body can be located in a first position with the first surface on the body facing generally upwardly for use, and a second position with the second surface on the body facing generally upwardly for use. By varying the surfaces on the body, and also the engagement of the protrusion with the notched channel, various spacial positions and functional surfaces can be selectively positioned for use. m portions of the same circularly-arcuate sector belonging to said peripheral edge. 4. A hinge mechanism according to claim 1, in which the two abutment zones are disposed substantially at 120° to each other about the pivot axis, and the two locking slugs are likewise disposed at substantially 120° to each other about the pivot axis. 5. A hinge mechanism according to claim 1, further including at least one jamming member of a shape that diverges going radially towards the teeth of the second cheek plate, and including a set of teeth facing said teeth of the second cheek plate, said jamming member being mounted on the first cheek plate in such a manner that the teeth of said jamming member come into engagement with the teeth of the second cheek plate at least when the hinge mechanism is subjected to a torque that is greater than a predetermined value, the first cheek plate including at least one guide adapted under such circumstances to co-operate with a side bearing edge belonging to the jamming member and urging said jamming member by a wedging effect against the teeth of the second cheek plate. 6. A hinge mechanism according to claim 5, having four jamming members, one of the jamming members being placed between the two locking slugs on one side of said diametral line and the other jamming members being placed on the other side of said diametral line, opposite the locking slugs. 7. A hinge mechanism according to claim 6, in which the guides corresponding to said three other jamming members are formed by two portions in relief fixed relative to the first cheek plate, said two portions in relief also forming said two abutment zones. 8. A hinge mechanism according to claim 1, in which the cam is urged resiliently by a single spiral spring which is placed in a central housing formed in the first cheek plate, said spring extending between a first end connected to the first cheek plate and a second end connected to the cam. 9. A vehicle seat comprising a seat proper and a seat back interconnected by at least one hinge mechanism according to claim 1. t al.; US-4707026, 19871100, Johansson; US-4720142, 19880100, Holdredge et al.; US-4744603, 19880500, Knoblock; US-4750784, 19880600, Schwartz; US-4787405, 19881100, Karowski, 403/109; US-4793611, 19881200, Thornell; US-4815688, 19890300, Wood; US-4822103, 19890400, Stenvall; US-4828323, 19890500, Broderson et al.; US-4844544, 19890700, Ochiai, 297/391; US-4911501, 19900300, Decker et al.; US-4917438, 19900400, Morgan, 297/116; US-4961610, 19901000, Reeder et al.; US-4966412, 19901000, Dauphin; US-5035466, 19910700, Mathews et al.; US-5046780, 19910900, Decker et al.; US-5056863, 19911000, DeKraker et al.; US-5106157, 19920400, Nagelkirk et al.; US-5143422, 19920900, Althofer; US-5215282, 19930600, Bonutti; US-5265938, 19931100, Melhuish et al.; US-5281001, 19940100, Bergsten et al.; US-5318346, 19940600, Roossien et al.; US-5333368, 19940800, Kriener et al.; US-5368364, 19941100, Kanai; US-5380065, 19950100, Rohrer; US-5382079, 19950100, Wilson et al.; US-5385388, 19950100, Faiks et al.; US-5393124, 19950200, Neil; US-5415459, 19950500, Schultz; US-5542746, 19960800, Bujaryn, 297/411.32; US-5549407, 19960800, Levi et al., 403/109; US-5586810, 19961200, Liu, 297/406; US-5612718, 19970300, Bryan, 297/411.35 ed metal tube being arranged in a forward portion of the seat member with the legs of the first U-shaped metal tube extending from this base toward the common axis, the base of the second U-shaped metal tube being arranged in an upper portion of the back rest with the legs of the second U-shaped metal tube extending from this base toward the common axis. 10. The frame of claim 9, wherein the legs of the first and second U-shaped metal tubes join one another thereby defining the common frame elements. 11. The frame of claim 10, wherein the legs of the first U-shaped metal tube extend into the back rest, while the legs of the second U-shaped metal tube extend into the seat member whereby at least some of the common frame elements are defined by overlapping legs of the first and second U-shaped metal tubes. 12. The frame of claim 11, wherein the overlapping legs of the first and second U-shaped members are rigidly joined to one another along a substantial portion of their overlap. 13. The frame of claim 1, wherein the frame includes a first stopping mechanism comprising an abutment assembly defined by cooperating abutting surfaces in the back rest and seat member, the cooperating abutting surfaces abutting one another when the back rest moves from the first seating angle to the second seating angle. 14. The frame of claim 13, wherein the abutment assembly includes an abutment member secured to one of the back rest and the seat member and a cooperating bearing member secured to the other of the back rest and the seat member. 15. The frame of claim 14, wherein the abutment member is secured to a lower portion of the back rest and wherein the seat member includes at least one rearward frame element located in a rearward section of the seat member, the bearing member being integral with the rearward frame element. 16. The frame of claim 15, wherein the back rest and the seat member are formed from at least one common frame element, the common frame element defining a frame element section in the back rest of the frame, an abutment member being rigidly secured to the frame element section. 17. The frame of claim 16, wherein the back rest and the seat member are formed from at least two common frame elements, one common frame element being associated with the left side of the frame and another frame element being connected with the right side of the frame, the common frame elements being connected with one another in the seat member by the rearward frame element. 18. The frame of claim 17, wherein the rearward frame element is a metal tube having a rectangular cross-section. 19. The frame of claim 1, wherein the vehicle seat is a bench-type seat for receiving multiple passengers, the frame defining a single unitary back rest designed to receive and support all of the passengers sitting in the seat. 20. The frame of claim 1, further comprising a seat belt/shoulder harness assembly for each passenger sitting in the seat, each seat belt/shoulder harness assembly being connected at least to an upper portion of the back rest. 21. The frame of claim 1, wherein the stopping mechanism includes a swing arm extending from a lower portion of the back rest of the frame underneath the seat member of the frame, the swing arm being rigidly attached to the back rest so that the swing arm remains in fixed spatial relationship with respect to the back rest as the back rest moves from the first to the second seating angles. 22. The frame of claim 21, further comprising a stop member adapted to stop movement of the swing arm after the back rest has moved to the second seating angle. 23. The frame of claim 22, wherein the stop member is designed to stop movement of the swing arm substantially simultaneously with abutment of the back and seat members of the frame. 24. The frame of claim 22, wherein the stop member is a tether. 25. The frame of claim 22, wherein the back rest and the seat member are defined by at least one common frame element having a trans ition portion designed to undergo plastic flow as the back rest moves between the first and second seating angles. 26. The frame of claim 25, wherein the frame includes multiple common frame elements extending between the back rest and the seat member of the frame, the common frame elements being composed of metal tubes each defining a transition portion designed to undergo plastic flow as the back rest moves between the first and second seating angles, the metal tubes further defining frame element sections in the back rest of the frame, an abutment member being rigidly secured to each frame element section for abutting the seat member when the back rest moves to the second seating angle. 27. A vehicle seat incorporating the frame of claim 1. 28. A shock absorbing frame for making a crash resistant vehicle seat comprising a first steel tube defining a seat section and a second steel tube defining a back section, segments of the steel tube in at least one of the seat and back sections extending into the other section, transition portions of the extending segments being strong enough to maintain the back section fixed in a first position with respect to the seat section under normal conditions but weak enough to undergo plastic flow and thereby allow the back section to move forward when an impact force exceeding a predetermined magnitude is applied to the back section, the frame further including at least one stopping mechanism designed to prevent the impact force from moving the back section of the frame past a second predetermined position. 29. The frame of claim 28, wherein the first and second steel tubes are U-shaped and further wherein the legs of both U-shaped steel tubes extend into the other section. 30. The frame of claim 29, wherein the stopping mechanism is composed of a swing arm rigidly attached to the back section so that the swing arm remains in fixed spatial relationship with respect to the back section as the back section moves from its first to second positions. 31. The frame of claim 30, wherein the swing arm is composed of steel flat stock, rigidly secured to a steel tube in the back section. 32. The frame of claim 31, wherein the swing arm includes a base segment rigidly secured to a steel tube in the back section of the frame and an arm segment integral with the base and extending from a lower portion of the back section underneath the seat section of the frame. 33. The shock absorbing frame of claim 32, further comprising another stopping mechanism composed of an abutment member rigidly mounted with respect to a steel tube in one of the back section and the seat section of the frame and a cooperating bearing member rigidly mounted with respect to the steel tube in the other section of the frame. 34. A vehicle seat incorporating the frame of claim 28.