Abstract: A body-weight adjusting device for a seat suspension is provided including an X-shaped link mechanism constituting the seat suspension, a combination of pinions and rack gears and a pair of tension springs. Vertical movement of an operation lever causes rotation of the pinion gears and simultaneous rotation of the intermeshing rack gears, to thereby increase or decrease the tension of the tension springs. In response to such tension variation in the tension springs, the X-shaped link mechanism is raised or lowered corresponding so as to permit a selective adjustment of the seat suspension to accommodate the weight of a seated occupant.

Abstract: A frame for use in a seat for a vehicle such as an automobile is disclosed which can be placed directly on a floor of a vehicle and also can be removed from the vehicle floor by hooking a fingertip on it. In this frame, the inner edge of the frame on which the fingertip is to be caught is foldedly formed into a right-angle shape so as to prevent the fingertip against damage, and the frame is inclined higher in its inward direction to prevent springs from coming into contact with the frame even when they are flexed due to application of loads.

Abstract: A light seat frame for a vehicle seat containing a seat cushion, which can slide forward and backward, containing a reinforcing arm, fixed between a front member and left and right side members of the frame to resist deformation.

Abstract: A base bracket is fixed to a driven shaft and a fixed gear, a lock gear rotatably supported by the base bracket and engageable with the fixed gear, a guide bracket rotatably supported by the base bracket, a handle slidably supported by the base bracket, a member for coupling the guide bracket to the lock gear and a member fixed to the handle and for rotating the guide bracket when the handle is slid relative to the base bracket, wherein the handle is slidably extended most outwardly from the base bracket, the guide bracket is rotated by the rotating member relative to the base bracket and the lock gear is also rotated through the coupling member so that the engagement between the lock gear and the fixed gear is released whereby the base bracket and hence the shaft can be rotatable by the handle.

Abstract: An improved vehicle seat such as an automotive seat is disclosed which is formed with through bores respectively in a seat cushion and a seat back, in particular, in the respective connecting portions thereof, harness means is inserted from within the seat cushion into the seat back via the thus-formed two through bores, and the harness is mounted such that it will never be exposed outside of the seat.

Abstract: A device for visually setting the spring force of a seat suspension for use in an automotive seat according to the weight of an occupant of the seat includes a display section formed of a light reflecting body and disposed on an inside lining of an automotive door for indicating the proper height of the automotive seat, and a visually confirming function section disposed in the seat for enabling the seat occupant to visually confirm the above-mentioned display section when the height of the seat is set at a predetermined level by adjustment of the spring force of the seat suspension. When the spring force of the seat suspension is properly set and thus the height of the seat is set at a predetermined level, the visually confirming function section enables the occupant while remaining seated to visually confirm the display section located in the door lining at a position where the occupant can easily observe it.

Abstract: A body-weight adjusting device for a seat suspension is provided including a combination of bell cranks, tension springs and a connecting rod. Vertical movement of an operation lever results in an increase or decrease in the tension of the springs (depending upon the starting position of the lever) in response to which the seat suspension mechanism is raised or lowered correspondingly so as to permit a selective adjustment of the seat suspension in accordance with the weight of a seated occupant.

Abstract: At the time of blow molding of a frame made of synthetic resin in the shape of a hollow plate, a molding process of the frame of a seat for vehicles which comprises a reinforcement plate in the shape of with leg portions substantially equal to the thickness of the frame plate is mounted within a molding die, thereby forming said reinforcement plate so as to be embedded within said frame. Furthermore, the upper and lower plates of the frame may be connected to each other by means of the leg portions of said reinforcement plate in the shape of so that a frame with a closed construction may be formed.

Abstract: A seat for use in a vehicle such as an automobile is disclosed which comprises a cushion member formed of foam material, a top member for covering the cushion member and a plurality of hanger members. In this seat, the top surface of the top member and the upper portion of the cushion member are respectively divided into a central portion and side portions independently of each other. A partition cloth is provided between the central and side portions of the top member and is then inserted within a cut groove separating the central and side portions of the cushion member from each other. After then, the hanger member is used to pull the inserted partition cloth and thus the top surface of the top member into their respective desired positions. With this structure, when an occupant is seated on the central portion of the seat, it is ensured that such a load applied to the central portion of the seat by the occupant will not have a deterimental effect on the peripheral or side portions of the seat.

Abstract: A head-rest is disclosed in which the lower ends of the stays are fixed to a seat frame of a seat back and a head-rest body is mounted to these stays in a manner that it is free to move in a vertical direction so as to provide a deeper recessed cavity in the rear of the seat back.

Abstract: A loose-cushion seat for use in a vehicle such as a bus, a passenger car or the like is disclosed which comprises a main pad provided with a skirt portion, a sub-pad placed on the main pad, a top member for covering the sub-pad. In the seat, the main pad is mounted such that it covers the outside surfaces of a seat frame. An insert wire is embedded in the skirt portion of the main pad and the end of the top member for covering the sub-pad is fixedly secured to the insert wire.

Abstract: A seat for vehicles is provided with a reclining device and a remote control means for remotely controlling the reclining device, in which seat an arm rest is pivotally mounted and provided at its forward end portion with the remote control means and at its upper portion with a recessed portion for receipt of one or more small articles. The arm rest has a linking mechanism arranged therewithin for mechanically linking the remote control means to the reclining device. The linking mechanism comprises a rod connected to the remote control means, a substantially V-shaped arm having a first leg portion and a second leg portion, of which leg portions the first leg portion is connected with the rod, an operation wire connected to the second leg portion of the substantially V-shaped arm and further connected to the reclining device and a spring extended between the first leg portion of the arm and the inner wall of the arm rest.

Abstract: A vehicle seat is disclosed in which an air bag is inserted into each of a plurality of support sections provided in a seat cushion and a seat bag respectively, and feed/exhaust operating devices provided collectively at one place are operated to adjust the amount of air within each of the air bags separately or simultaneously so as to expand and thus elevate the front part of the respective support sections by means of air pressure.

Abstract: A head-rest device for a vehicle seat is disclosed in which a head-rest stay mounting a head-rest in its upper portion is supported in such a manner that it can be adjusted vertically with respect to a seat back by means of a lock mechanism provided in a head-rest holder. According to the lock mechanism of the invention, a torsion lock spring is fitted into the head-rest holder through which the head-rest stay is inserted and which is fixed to the seat back. The head-rest stay can be locked relative to the head-rest holder by means of the winding force of the torsion lock spring. An operator can be rotated to rewind the torsion lock spring so as to release such locking of the head-rest stay. Thus, it is possible to adjust the vertical position of the head-rest as required.

Abstract: An improved seat with an air suspension is disclosed in which detector means, a control circuit and electromagnetic valves are cooperatively used to operate the air suspension so as to automatically control the amount of air to be contained within the air suspension according to the weights of different occupants of the seat. Outputs from the detection means for detecting the vertical displacements of the seat are inputted to the control circuit and held therein for a predetermined period of time before the control circuit is operated to control the amount of air to be contained within the air suspension.

Abstract: An adjustment/engagement device applicable to a thigh support device, a head-rest height adjustment device and the like in a vehicle seat is disclosed. In this adjustment/engagement device, a stopper bracket having a plurality of engagement grooves engageable in only one direction and provided at their both ends with engagement pieces is provided in one of a fixed-side member and a movable-side member in a movable adjustment portion of the vehicle seat, while a lock bracket engageable into the front-end-side engagement groove of the stopper bracket and movable in a separating direction after abutment against the front-end-side engagement piece of the stopper bracket as well as a lock-off bracket rotatable when abutted against the rear-end-side engagement piece of the stopper bracket are provided in the other, whereby the position of the movable-side member can be adjusted by directly operating the movable-side member itself.

Abstract: A vehicle seat is disclosed which includes air bags therein in order to form support sections of a predetermined configuration on the surface of the seat. Within a seat pad in the seat, in particular, in its interior portions which correspond to locations where said support sections are formed, there are formed slits respectively such that these slits extend substantially parallel with the surface configurations of the respective support sections. Also, the air bags are inserted into and contained within these slits, respectively. The air bags and thus the support sections can be suitably expanded and compressed by means of an adjustment device.

Abstract: A vehicle seat is disclosed in which the movable arm members of its reclining mechanism are mounted to reinforcing members provided inside a back frame of a pan-type structure. Bolts for fixing the movable arm members are not projected outside the back frame.

Abstract: An improved height adjustment mechanism for a vehicle seat is disclosed which is adapted to incline the entire seat. In this height adjustment mechanism, four plate-like receiving pieces are provided respectively in the four leg rods of a seat frame in such a manner that they are respectively inclined or descend forwardly, and, on the other hand, four support plates are provided in a mounting platform to be fixed to the vehicle in such a manner that they respectively have the same inclined surface as that of the receiving piece, thereby achieving a face engagement between the respective receiving pieces and support plates. Such face engagement allows loads applied to the respective leg rods to be dispersed over the entire mounting platform.

Abstract: A seat for use in a vehicle such as a motor car is disclosed in which a thigh support portion and a bottom support portion are integrally foamed with each other, and separate lower frame wires are embedded independently of each other within the respective support portions, whereby the thigh support portion can be smoothly moved up and down by a thigh support device provided therein.