Telecommunications – Receiver or analog modulated signal frequency converter – Combined with diverse art device
Patent
1990-11-05
1991-12-17
Kuntz, Curtis
Telecommunications
Receiver or analog modulated signal frequency converter
Combined with diverse art device
248 271, 312 71, 361422, 455348, 455349, H04B 108, H05K 700
Patent
active
050739786
DESCRIPTION:
BRIEF SUMMARY
The invention concerns a box-shaped frame, made to receive car radio sets, said frame having electric connections at its rear end.
During installation of radio receiving sets in motor vehicles it is well known that difficulties often arise over getting a good fit between the box-like spaces provided in said vehicles and the radio sets to go in them.
It frequently happens that the radio set for this purpose is longer than the depth of the space in which it has to go and consequently the set projects outward in front. The disadvantages so caused are: extra obstruction, a poor appearance and functional ureliability.
The contrary may also happen, namely that the space is too long for the radio set so that electric contacts on the one and the other do not match properly leading to discontinuity in the circuits to be created between those in the vehicle and those in the set.
An expert must therefore be called in to make what alterations are needed to adapt the set to the prepared aperture, or to replace said aperture with another, or else to buy a radio set that fits better into the one provided. The patent EPO 0 180 035 discloses a device for removably mounting a radio apparatus in motor vehicles.
Said device comprises a substantially tubular frame or housing, of a rectangular cross section, into which the car radio can be slid from the front, there being at the back a U-shaped carrier that can be moved in relation to said housing guided by channels made in its sides.
A connector for a source of electric power is fixed onto said U-shaped carrier, and lies opposite a connector for a source of electric power mounted on the car radio.
On inserting the radio into the tubular housing the two connectors plug into each other.
The U-shaped carrier is pushed towards the front end of the tubular housing, namely towards the car radio, by springs.
The free movement of the U-shaped carrier can clearly give rise to problems of efficiency for the contact between the two connectors.
If the springs were very strong this would create other problems as they would tend to push the radio outside the housing.
The device seems substantially to be complex with consequent risk of failure and considerable repair costs.
The above invention avoids the above drawbacks and, in addition offers other appreciable advantages as will be explained.
Subject of the invention is a box-shaped housing for removeable car radios mounted in motor vehicles, the position of the end section being adjustable to allow for any length of car radio.
Said adjustment is made possible by a number of fastening means placed longitudinally along the walls of the box-shaped housing and of the end section.
The fastening means consist of sets of notches made on the opposite edges of rectangular longitudinal windows cut in the sides of the box-shaped housing, and of projecting strips on the edges of the elastic sides of the end section and turned outwards so that they face towards the sides of the box-shaped housing in a position corresponding to said notches.
The length of the said strip projections is practically the same as the distance between the bottoms of the opposite sets of notches.
It is therefore possible, by manual action alone and without instruments, and overcoming the elastic resistance offered by the sides of the end section, to fit said strip projections into one or another pair of notches.
The end section remains firmly held in the desired position due to the elastic reaction of its sides.
The sides of the adjustable end section are connected to its rear wall at an angle of 90.degree. and the locking strip projections are on the front edges of said sides.
The electric circuits of the car radio are connected to an electric connector mounted in an end plate applied to the back end of the radio, opposite an electric connector mounted on the adjustable end section of the box-shaped housing, so that one connector plugs into the other.
The advantages of the invention are clear.
By adjusting the depth of the box-like frame, mounted in the motor vehicle, the rad
REFERENCES:
patent: 4660900 (1987-04-01), Paterlini
patent: 4699341 (1987-10-01), Ponticelli
patent: 4895326 (1990-01-01), Nimpoeno et al.
Kuntz Curtis
Pham Chi H.
Striker Michael J.
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