Chairs and seats – Chair hardware or attachment
Patent
1998-06-09
2000-03-07
Nelson, Jr., Milton
Chairs and seats
Chair hardware or attachment
2485031, 411 15, B60N 244
Patent
active
060330287
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a fastening device.
BACKGROUND OF THE INVENTION
When assembling displaceable seats in vehicles, a system is often utilized which is composed of three parts: a floor attachment, a runner and the seat itself which includes the seat back. The runner is attached to the seat and is displaceably mounted on the floor attachment. The floor attachment is screwed to the floor at four different fastening points, two at the front and two at the back.
A problem in connection with the above-described assembly is that vertical play normally arises between one of the fastening points and the floor. If four fastening points are utilized for the attachment, play therefore arises at the fourth fastening point after the first three fastening points have been secured with screws. When mounting the floor attachment, the fastening procedure therefor has to be adjusted in order to compensate for variations in the vertical direction which arise at the fourth fastening point. This is normally accomplished by means of the mounting holes of the fastening points, in the rear, having a diameter which is larger than the diameter of the fastening screws which are utilized. This permits a certain degree of lateral displacement of the floor attachment. This type of fastening is, however, not possible in the case where all of the fastening surfaces are arranged horizontally, i.e. if they are parallel to the seat of the vehicle.
An object of the present invention is therefore to solve the above mentioned problem and to provide a fastening device for the fastening of a first and a second object which are separated from each other by a certain distance in space. The above mentioned objects preferably comprise fastening surfaces which are essentially arranged parallel to each other.
SUMMARY OF THE INVENTION
In accordance with the present invention, this and other objects have now been realized by the discovery of a fastening device for joining a first object to a second object including an aperture at a predetermined distance from each other, the fastening device comprising a sleeve member adapted to be firmly affixed to the first object, a distance member movably disposed within the sleeve member whereby the distance member is adapted to abut against the second object, an expansion member adapted to bear against the distance member within the sleeve member, and a fastening screw for interacting with the aperture in the second object whereby when the fastening screw is tightened the expansion member is pressed against the distance member and is thereby expanded to lock against the sleeve member. In a preferred embodiment, the sleeve member has an inner dimension and includes a bottom surface defining an aperture having an inner dimension, and the distance member comprises a flange having an outer dimension, the outer dimension of the flange being greater than the inner dimension of the aperture in the bottom surface of the sleeve member and less than the inner dimension of the sleeve member. In a preferred embodiment, the expansion member bears against the flange.
In accordance with one embodiment of the fastening device of the present invention, the fastening device includes a planar washer disposed between the fastening screw and the expansion member.
In accordance with another embodiment of the fastening device of the present invention, the expansion member has a circumference and comprises a plurality of radial tongues extending towards the circumference, the plurality of radial tongues being curved in relation to the plane of the expansion member.
In accordance with another embodiment of the fastening device of the present invention, the fastening device includes a transport securing device fixed on the distance member and interacting with the fastening screw.
In accordance with the present invention a vehicle seat is also provided comprising a fastening device as set forth above.
The fastening device according to the present invention comprises a sleeve member which is prefera
REFERENCES:
patent: 1137443 (1915-04-01), Ackerman
patent: 2365372 (1944-12-01), Allen
patent: 4218954 (1980-08-01), Morel
patent: 5246322 (1993-09-01), Salice
Hammarverken i Vaxjo AB
Jr. Milton Nelson
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