SEAT FOR VEHICLE PREFERABLY AGRICULTURAL VEHICLE

• US 3,572,828 A
• Filed: 10/21/1968
• Issued: 03/30/1971
• Est. Priority Date: 10/23/1967
• Status: Expired due to Term

• Current Assignee: Lehner Wilhelm
• Original Assignee: Lehner Wilhelm
• Inventors: LEHNER WILHELM
• Application Number:
  US04/769,346
• Time in Patent Office: 890 Days
• US Class Current: 297/308
• CPC Class Codes: A47C 31/00 Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
• CPC Class Codes: B60N 2/045 Longitudinal adjustment by means of articulated rods supporting the seat, e.g. parallelogram mechanisms B60N2/38 takes precedence
• CPC Class Codes: B60N 2/502 attached to the base of the seat B60N2/504 takes precedence
• CPC Class Codes: B60N 2/504 attached to the base and the backrest
• CPC Class Codes: B60N 2/505 Adjustable suspension including height adjustment
• CPC Class Codes: B60N 2/507 Parallelogram-like structure
• CPC Class Codes: B60N 2/544 Compression or tension springs B60N2/542 takes precedence
• CPC Class Codes: B60N 2/58 Seat coverings

Abstract

The seat comprises an L-shaped carrying frame for the seat upholstery and an L-shaped mounting frame for connecting the seat to the vehicle. The mounting frame has a rear part which forms a track for rollers carried by the carrying frame. The seat also comprises a rocker arm, which is disposed under the seat proper, and a spring mounting consisting of resilient elements and a vibration damper. The rocker arm is pivoted to the mounting frame and to the seat proper at the forward ends thereof, and the spring mounting elements are connected at one end to the rear part of the mounting frame and at the other end to a short compensating rocker arm, which is pivoted at one end to the rear part of the mounting frame and at the other end by a roller to a track, which is provided on that part of the carrying frame which is near the seat proper.

Claims

1. A vehicle swing seat, particularly for agricultural vehicles, said swing seat comprising:

a seat proper;

a seat back;

a mounting frame extending behind said seat back and substantially parallel thereto, said mounting frame serving to connect the swing seat to its associated vehicles;

a plurality of guide elements connected to said seat back;

guide track means in said mounting frame for guiding said guide elements during upward and downward movement of said swing seat;

a first swing shaft arranged below said seat proper for pivotally connecting the front region of the seat proper to the bottom region of said mounting frame; and

a second swing shaft for pivotally connecting the rear region of the seat proper to said mounting frame;

at least one spring element, the upper end of which is fastened to said mounting frame and the lower end of which is fastened to said second swing shaft; and

a guide path arranged on said seat proper for guiding the end of said second swing shaft associated with the rear region of the seat proper for both rotation and translation.

2. A vehicle swing seat according to claim 1, in which the ends of said first and second swing shafts associated with said mounting frame lie in two horizontal planes, one above the other.

3. A vehicle swing seat according to claim 1, wherein the mounting frame is in the form of a hollow box;

and wherein said guide elements are in the form of plastic rollers rotatably connected to said seat back;

said hollow box defining the guide track means.

4. A vehicle swing seat according to claim 3, and further comprising an L-shaped frame member for stiffening said seat back, said plastic rollers being rotatably connected to said frame member.

5. A vehicle swing seat according to claim 1, and further comprising a roller rotatably fasteneD to the end of said second swing shaft associated with said seat proper, said roller adapted to roll in said guide path upon displacement thereof.

6. A vehicle swing seat according to claim 1, and further comprising a U-shaped support provided on the rear side of said mounting frame, the legs of said support extending through a pair of slots defined in said mounting frame and in a direction substantially transverse to the direction of movement of said guide elements, the legs extending into said mounting frame from the rear thereof;

a threaded spindle associated with and screwed into said U-shaped support;

means for rotating said spindle from outside said mounting frame, thereby screwing same into or out of said support; and

means for connecting the upper end of said spring elements to the legs of the U-shaped support.

7. A vehicle swing seat according to claim 1, wherein the lower edges of said mounting frame are bent in an L-shape in a direction towards each other, and further comprising a baseplate where edges define complementary rails, which rails are bent in an L-shape away from each other, the lower edges of said baseplate associated with said rails and being displaceable therein in a longitudinal direction;

a threaded rod extending transversely to and connecting the lower edges of said baseplate; and

a nut screwed on the threaded rod for clamping the lower edges of the baseplate to the L-shaped rails.