CN2818711Y

CN2818711Y - 180 degree hidden hinge

Info

Publication number: CN2818711Y
Application number: CN 200520116970
Authority: CN
Inventors: 马亚军
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-06
Filing date: 2005-12-06
Publication date: 2006-09-20
Anticipated expiration: 2015-12-06

Abstract

The utility model discloses a 180 DEG blind hinge which comprises a hinge box (5), a hinge arm (1) for a door leaf in a right-angle shape and a hinge arm (4) for a door frame, wherein the hinge arm (4) for a door frame is fixed on a shaft sleeve (3). The shaft sleeve (3) is hinged with a pin shaft (2) arranged on the hinge box (5). The hinge arm (1) for a door leaf is fixedly connected with the hinge arm (4) for a door frame. The hinge box (5) is fixed on a door frame (10). A hinge arm hole (11) is arranged on the door frame (10). The bent position of a first right-angle arm of the hinge arm (4) for the door frame is provided with a groove (8) of the hinge arm, which is outwards convex. The rotary radius of the first right-angle arm of the hinge arm (4) for the door frame is not beyond the radius of the hinge box (5). When a door leaf (9) is opened 180 DEG, the groove (8) of the hinge arm is matched with an anti-picking step (13) on the door frame (10). After the structure is used and the hinge arm (4) for the door frame can rotate 90 DEG, the hinge arm (4) for the door frame is in contact with the anti-picking step (13) again to cause an anti-picking door to optionally open between 0 and 180 DEG. The utility model has the advantages of simple structure, low cost, good versatility, etc. The utility model can be conveniently adjusted upwards, downwards, leftwards and rightwards.

Description

180 ° of blind hinges

Technical field

The utility model relates to a kind of hinge, particularly a kind ofly can make anti-forcing open the door open 180 ° blind hinge.

Background technology

At present, the blind hinge of domestic pick-proof retail sales place use can be divided into the adjustable blind hinge of C type punching press, 180 ° of stacked blind hinges; Though the adjustable blind hinge of C type punching press can be installed on anti-the forcing open the door on band pick-proof limit, both sides, adjust, increase the pick-proof performance effectively, but weak point is its opening angle and is restricted, generally can only open about 90 °, the installation meeting brings inconvenience to the user on public domain or narrow corridor; Though 180 ° of stacked blind hinges are easy for installation, elegant in appearance, but weak point is can not finely tune position up and down, installation accuracy height, cost of production height, the most fatal defective is that the anti-pick-proof webbing and hinge arms of forcing open the door in opening process collided, and causes anti-the forcing open the door on every band pick-proof limit all can not install and use.

In order to address the above problem, the inventor has released a kind of anti-180 ° of blind hinges of forcing open the door to market, its number of patent application is 200200135221, its feature is that anti-forcing open the door can be opened 180 °, all can adjust up and down, fill up the vacancy of 180 ° of blind hinges of domestic security door, solved the problem that never solves for many years, brought facility for vast manufacturer; But through applying after a while, also expose the some shortcomings part, mainly contain with some: the one, this hinge cost of production height, complex structure, common blind hinge adopts an axle to open, and this hinge adopts four double-action plates on four axles and the pivoted arm to form, and the reliability of its use is subjected to the customer and suspects; The 2nd, this hinge is installed cumbersome, and especially at pick-proof limit this part difficulty especially, it is efficient and convenient like that to be nothing like common 90 ° of blind hinges; The 3rd, present domestic security door market price competition has arrived white-hot degree, and the only way out is to reduce production costs and increases production capacity and wins victory, and so, has a lot of producers just need not this expensive hinge.

In order to reduce production costs, present many producers adopt the adjustable blind hinge of common C type punching press that can only open 90 ° again, in order to increase the security door opening angle, on door frame, make an issue of, constantly increase the pivoted arm hole of door frame, this not only reduces the mechanical strength of door frame, cause door leaf and door frame closure simultaneously after, from the slit of the pick-proof limit of door leaf and door frame, can be clear that the installation site of blind hinge, not have blind hinge safety precaution effect.

Summary of the invention

In order to overcome the above-mentioned disadvantage that existing blind hinge exists, the invention provide a kind of simple in structure, easy to adjust, cost of production is low, versatility good, can open 180 ° blind hinge again.The technical scheme that its technical problem that solves the utility model adopts, it comprises hinge box, right angle type door leaf pivoted arm, the door frame pivoted arm, the door frame pivoted arm is fixed on the axle sleeve, axle sleeve is hinged with the bearing pin that is arranged on the hinge box, the door leaf pivoted arm is fixedlyed connected with the door frame pivoted arm, hinge box is fixed on the door frame, have the pivoted arm hole on the door frame, first right angle arm bending part of described door frame pivoted arm is provided with the pivoted arm groove of outside protrusion, first right angle arm radius of gyration of door frame pivoted arm does not exceed hinge box, force open the door when opening 180 ° anti-, the pivoted arm groove matches with pick-proof step on the door frame.

Light for door leaf is opened, the bearing pin of described axle sleeve bottom is provided with bearing.

After adopting said structure,, the door frame pivoted arm can be contacted behind many half-twists again, thereby anti-forcing open the door can arbitrarily be opened between 0 to 180 ° with the pick-proof step of door frame because first right angle arm bending part of door frame pivoted arm is provided with the pivoted arm groove of outside protrusion; The perforate of pivoted arm hole is less, after door leaf and door frame closure, and the installation site that can not see blind hinge from the slit of the pick-proof limit of door leaf and door frame; It has thoroughly changed many deficiencies that existing hinge exists, and eliminates blocking the passageway; Have simple and reasonable, firm and reliable connection, up and down easy to adjust, cost of production is low, conventional anti-forcing open the door such as can both install and use at advantage.

Description of drawings

Structural representation when Fig. 1 opens 90 ° for the utility model.

A-A generalized section when Fig. 2 opens 90 ° for the utility model Fig. 1.

A-A generalized section when Fig. 3 is the utility model Fig. 1 closure.

A-A generalized section when Fig. 4 opens 180 ° for the utility model Fig. 1.

The specific embodiment

Fig. 1 is to shown in Figure 4, specific embodiments for 180 ° of blind hinges of the utility model, it comprises hinge box 5, right angle type door leaf pivoted arm 1, door frame pivoted arm 4, door frame pivoted arm 4 is fixed by welding on the axle sleeve 3, axle sleeve 3 is hinged on the bearing pin 2 on the hinge box 5, the bearing pin 2 of axle sleeve 3 bottoms is provided with bearing 7, by adjust between axle sleeve 3 and the bearing pin 2 between the upper and lower every the gap up and down of adjusting door leaf 9; Door leaf pivoted arm 1 is provided with the kidney groove, be convenient to adjust gap, door leaf 9 left and right sides, and be fixed on the door frame pivoted arm 4 by screw 6, hinge box 5 is fixed on the door frame 10, have pivoted arm hole 11 on the door frame 10, first right angle arm bending part of described door frame pivoted arm 4 is provided with the pivoted arm groove 8 of outside protrusion, door frame pivoted arm 4 can be touched with the pick-proof step 13 of door frame 10 behind many half-twists mutually, first right angle arm of door frame pivoted arm 4 does not exceed hinge box 5 in rotary course, when door leaf 9 was opened 180 °, pivoted arm groove 8 just was buckled on the pick-proof step 13 on the door frame 10.After adopting said structure, as long as it is just passable that pivoted arm hole 11 is reached on the plane step of pick-proof step 13, just can guarantee that door leaf 9 freely opens in 0 to 180 ° of scope, its inboard can also keep more than the 4mm, can guarantee after door leaf 9 closures, the pick-proof limit 12 of door leaf 9 covers pivoted arm hole 11, from outside toward in, can not from the slit of the pick-proof limit 12 of door leaf 9 and door frame 10, see the installation site of blind hinge.

Claims

1, a kind of 180 ° of blind hinges, comprise hinge box (5), right angle type door leaf pivoted arm (1), door frame pivoted arm (4), door frame pivoted arm (4) is fixed on the axle sleeve (3), axle sleeve (3) is hinged with the bearing pin (2) that is arranged on the hinge box (5), door leaf pivoted arm (1) is fixedlyed connected with door frame pivoted arm (4), hinge box (5) is fixed on the door frame (10), have pivoted arm hole (11) on the door frame (10), it is characterized in that: first right angle arm bending part of described door frame pivoted arm (4) is provided with the pivoted arm groove (8) of outside protrusion, first right angle arm radius of gyration of door frame pivoted arm (4) does not exceed hinge box (5), when door leaf (9) was opened 180 °, pivoted arm groove (8) matched with pick-proof step (13) on the door frame (10).

2,180 ° of blind hinges according to claim 1 is characterized in that: the bearing pin (2) of described axle sleeve (3) bottom is provided with bearing (7).