Retractable security door
A retractable anti-theft door and door frame technology, applied in the field of anti-theft doors, can solve the problems of the anti-theft door being deformed under pressure, unable to be opened, etc., and achieves the effects of low price, simple structure and convenient use.
Inactive Publication Date: 2015-09-30
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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Problems solved by technology
[0003] The present invention is to provide a retractable anti-theft door. When the anti-theft door is under pressure, the two opposite sides can shrink in the same direction, which can solve the technical problem that the anti-theft door cannot be opened due to compression deformation.
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[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0014] Such as figure 1 As shown, a retractable anti-theft door includes a doorbolt support rod 5, a concave four-bar linkage mechanism 6, a fastening wire rope 7, a fixed rubber ring 8, a sleeve 9, an inner door frame supporting telescopic rod 10, a manually driven automatic Lock retraction device 11, transverse connecting bar 12, longitudinal connecting bar 13.
[0015] Four inner door frame support telescopic rods 10 are connected to form an inwardly telescopic inner door frame, and at least one concave four-bar linkage mechanism 6 is connected to the inner door frame, wherein the inner door frame support telescopic rods 10 on both sides of the inner door frame pass through the sleeve 9 and the horizontal connecting bar 12 are respectively connected with the middle connecting shaft of the inner shortening rod of the concave type four-bar linkage mec...
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The invention relates to an inwards-retracting anti-theft door. The inwards-retracting anti-theft door comprises a bolt support rod, recessed four bar mechanisms, sleeves, four inner-door-frame supporting telescopic rods, transverse connecting strips and longitudinal connecting strips. The inner-door-frame supporting telescopic rods are connected to form an inner door frame capable of retracting inwards. At least one recessed four bar mechanism is connected in the inner door frame. The inner-door-frame supporting telescopic rods of two sides of the inner door frame are connected with middle connecting shafts of inwards-retracting short rods and rear-end connecting shafts of closed long rods of the recessed four bar mechanisms through the sleeves and the transverse connecting strips respectively. The inner-door-frame supporting telescopic rods of the upper end and the lower end of the inner door frame are connected with connecting pins of the closed long rods and inwards-retracting short rods through the sleeves and the longitudinal connecting strips respectively. The inwards-retracting anti-theft door is simple in structure, low in cost and convenient to use, and is widely applied to the fields of family houses, dormitories, various commercial buildings and the like.
Description
technical field [0001] The invention relates to an anti-theft door, in particular to an anti-theft door device with simple manufacturing process, low price and convenient use. Background technique [0002] The existing anti-theft door is deformed due to heat or force extrusion, and the door cannot be opened, especially in the case of a disaster, it is impossible to escape. Therefore, there is a need for a door structure with a retractable four-bar structure as the main body, so that when the door is under pressure, the two opposite sides can shrink in the same direction, avoiding the problem that the door cannot be opened. At the same time, considering the situation of heat exposure, plastic connectors are added, so that the door can ensure the escape function in case of disaster. Contents of the invention [0003] The present invention provides a retractable anti-theft door. When the anti-theft door is under pressure, the two opposite sides can shrink in the same dir...
Claims
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IPC IPC(8): E06B5/11E06B3/92
Inventor 吴懋亮李少锋李其华戚晨晨陈英超
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER