Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Hinge – Having means to facilitate assembly and disassembly of hinge...
Patent
1994-12-07
1996-10-08
Mah, Chuck Y.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Hinge
Having means to facilitate assembly and disassembly of hinge...
16260, 16262, E05D 710
Patent
active
055618863
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a hinge, particularly a door hinge for switch and instrument cabinets, according to the preamble of claim 1.
EP 157,344 B1 discloses a door hinge having a first hinge part fixed to the inside of a cabinet door and having a bearing hole, as well as a second hinge part on the cabinet side. The cabinet-side hinge part has two bearing holes on a fastening plate, between which is located the door-side bearing hole and are connected by means of two hinge pins in each case insertable in a cabinet-side bearing hole.
In order to be able to remove a folding door, e.g. for assembly or maintenance work, it is necessary to release the hinge joint, whilst maintaining the hinge pins fixed. For this purpose the hinge pins have in each case two spaced locking grooves, in which can engage a stop spring fixed on each cabinet-side bearing hole, so that the hinge pins, relative to the door-side bearing hole or the door-side hinge part can be held in an uncoupling position and a coupling position. In addition, on each hinge pin is provided a ring groove and a projecting retaining section, in order to be able to remove the hinge pins counter to the spring tension with the aid of a suitable tool, e.g. a screwdriver. However, this requires certain skill, because the hinges are often located in an area of an angled edge of the cabinet door and are not readily accessible.
A further disadvantage of this known hinge is the relatively complicated construction of in particular the hinge pin provided with different ring and locking grooves and the resulting cost-intensive manufacture of the hinge.
The object of the invention is to provide a hinge, which has a particularly simple design and robust construction and which is preferably used for 19" cabinets, switch and instrument cabinets, in which a rapid and uncomplicated removal and joining together of the hinge parts is advantageous.
According to the invention this object is achieved through the characterizing features of claim 1. Advantageous, appropriate developments appear in the subclaims and the specific technical description.
The invention is based on the idea that a particularly easy assembly and disassembly of hinge parts, e.g. for fixing and releasing a door on a cabinet or cabinet frame is possible if at least one hinge part, namely a cabinet-side or door-side hinge part, optionally also both hinge parts comprise two portions, which can be fixed independently of one another and are axially adjustable relative to one another and therefore in principle in the vertical direction in a cabinet.
According to the invention a bipartite compartment-side or door-side hinge part comprises a first, e.g. lower and a second, e.g. upper hinge portion, between which in the fixed state as a corresponding hinge part is provided a door-side or cabinet-side hinge part and is pivotably mounted by means of at least one hinge pin.
In a first embodiment of the invention a one-piece, door-side hinge part has a hinge pin projecting axially over a hinge pin support and which engages in a bearing hole of an upper cabinet-side hinge portion and in a bearing hole of the lower, cabinet-side hinge portion.
Preference is given to a construction with in each case one hinge pin on the lower and upper cabinet-side hinge portion, the hinge pins preferably being received in fixed manner, e.g. being inserted with press fit in a sleeve-like receptable. The door-side hinge part then has an e.g. rolled-in or curled hinge hole and is pivotably held between the bipartite and appropriately homologously constructed cabinet-side hinge portions fixed by means of in each case one fastening area by means of their hinge pins.
In a particularly simple manner in in each case one fastening area of the lower and the upper cabinet-side hinge portion is provided an elongated hole with a complementary depression for receiving a countersunk screw in a virtually central manner. The depression for the countersunk screw is in each case located on the hinge pin-side end of the elongated hole.
During assembly there
REFERENCES:
patent: 313740 (1885-03-01), Jaques
patent: 1962709 (1934-06-01), Case
patent: 2748420 (1956-06-01), Clover
patent: 3021555 (1962-02-01), Hogedal
patent: 4010504 (1977-03-01), Griffin
patent: 5111503 (1992-05-01), Takagi
Knurr-Mechanik fur die Elektronik Aktiengesellschaft
Mah Chuck Y.
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