CN2934516Y

CN2934516Y - 180 degree hidden hinges

Info

Publication number: CN2934516Y
Application number: CN 200620104099
Authority: CN
Inventors: 丁樟金; 丁国刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-27
Filing date: 2006-05-27
Publication date: 2007-08-15
Anticipated expiration: 2016-05-27

Abstract

The utility model discloses a 180-degree blind hinge comprising a hinge base (8), a door-leaf hinge arm (1) and a C-shaped door-frame hinge arm; wherein, a shifting fork (10) is fixed on the axle of the door-leaf hinge arm (1), a safety apparatus is fixed on the C-shaped door-frame hinge arm, the safety apparatus is composed of a safety base (3), a safety rod (14) and a grooved pulley (15), the safety rod (14) is positioned on the safety base (3), the top part of the safety rod (14) is matched with the upper end face of the hinge base (8), the grooved pulley (15) is arranged at the lower part of the safety rod (14), the grooved pulley (15) is provided with a groove (19), an inclined plane (18) is arranged at the inlet of the groove (19), the shifting fork (10) is matched with the inclined plane (18) and the groove (19); adopting the structure hereinabove, the door leaf (20) is able to rotate ninety degrees along the supporting axle (12) and the movable supporting axle (9), which enables the pickproof door to be opened randomly between zero and one hundred and eighty degrees. The utility model has the advantages of simple and reasonable structure, reliable application, convenient mounting and regulation, low manufacturing cost and favorable universality.

Description

180 degree blind hinges

Technical field

The utility model relates to a kind of door hinge, particularly a kind of blind hinges that can make anti-unlatching 180 degree of forcing open the door.

Background technology

At present, the blind hinge that generally uses on the domestic anti-product of forcing open the door can be divided into the adjustable C shape pivoted arm blind hinge of 90 degree unlatchings and the stacked blind hinge that 180 degree are opened.

The adjustable C shape pivoted arm blind hinge that 90 degree are opened can be installed on anti-the forcing open the door on band pick-proof limit, both sides, adjust, have the mechanical strength height, the pick-proof performance is good, cost of production is low, installation is easy to adjust, its weak point is that opening angle is restricted, generally can only open about 90 degree, anti-the forcing open the door of C shape pivoted arm blind hinge is installed on public domain, office space and narrow corridor can bring inconvenience to the user.

Though stacked blind hinge mechanical strength height, pick-proof performance that 180 degree are opened are good, elegant in appearance, but weak point is can not finely tune the position up and down door leaf, that installation accuracy requires is high, cost of production is high, and a lot of producers abandon using this hinge owing to installation requirement height and cost are too high; The defective that also exists is that the anti-pivoted arm and pick-proof limit of forcing open the door in opening process that has a pick-proof limit collided in addition, causes anti-the forcing open the door on every band pick-proof limit all can not install and use.For this reason, how many manufacturers and knowledgeable people make anti-unlatching 180 degree of forcing open the door carry out improvement and research repeatedly, design many different schemes, but do not have ideal method to solve the problems referred to above so far as yet.

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, use reliable, installations is easy to adjust, cost of production is low, versatility good, can open 180 again spends blind hinges.The technical scheme that its technical problem that solves the utility model adopts, it comprises hinge seat, the door leaf pivoted arm, C shape door frame pivoted arm, on the one end hinged support axle of C shape door frame pivoted arm, bolster is arranged on the hinge seat, the other end of C shape door frame pivoted arm is hinged on the expansion bearing axle, the door leaf pivoted arm is hinged on the expansion bearing axle by axle sleeve, be fixed with shift fork on the axle sleeve of described door leaf pivoted arm, be fixed with safeties on the C shape door frame pivoted arm, safeties are by Insurance Block, bumper bar and sheave are formed, but the bumper bar of upper and lower displacement is arranged on the Insurance Block, the top of bumper bar and the upper surface of hinge seat coupling, sheave is arranged on the bottom of bumper bar, and sheave is provided with groove, the inlet of groove is provided with the inclined-plane, shift fork and the groove coupling that has the inclined-plane.

Described C shape door frame pivoted arm comprises A pivoted arm and B pivoted arm, and the hinged end of A pivoted arm and B pivoted arm is fixed with axle sleeve respectively, and the A pivoted arm is provided with adjustment hole, and the A pivoted arm passes adjustment hole by hold-down screw fixedlys connected with the B pivoted arm.

Light flexibly for door leaf is opened, the axle sleeve bottom of described A pivoted arm and the bolster between the hinge seat are provided with bearing, and the axle sleeve bottom of door leaf pivoted arm is provided with bearing with the expansion bearing axle of the axle sleeve of B pivoted arm.

After adopting said structure, because the door leaf pivoted arm is hinged on the expansion bearing axle by axle sleeve, be fixed with shift fork on the axle sleeve of described door leaf pivoted arm, be fixed with safeties on the C shape door frame pivoted arm, door leaf can not only revolve around bolster and turn 90 degrees, and under the effect of safeties, revolve and turn 90 degrees, thereby anti-forcing open the door can arbitrarily be opened between 0 to 180 degree around the expansion bearing axle; It has thoroughly changed many deficiencies that existing hinge exists, and eliminates blocking the passageway; Have simple and reasonable, use advantages such as easy to adjust, that cost of production is low, versatility is good be installed reliably, up and down.

Description of drawings

Structural representation on Fig. 1 prevents forcing open the door for the utility model is installed in.

Fig. 2 is that the A of the utility model Fig. 1 is to structural representation.

Fig. 3 is the utility model safeties structural representations.

The specific embodiment

Fig. 1 is to shown in Figure 3, specific embodiments for the utility model 180 degree blind hinges, it comprises hinge seat 8, door leaf pivoted arm 1, C shape door frame pivoted arm, hinge seat 8 is fixed on the door frame 21, door leaf 20 is fixed on the door leaf pivoted arm 1, C shape door frame pivoted arm comprises A pivoted arm 11 and B pivoted arm 7, the hinged end of A pivoted arm 11 and B pivoted arm 7 is fixed with axle sleeve respectively, A pivoted arm 11 is provided with adjustment hole 4, A pivoted arm 11 is by hold-down screw 5, pad 6 is fixedlyed connected with B pivoted arm 7, A pivoted arm 11 ends of C shape door frame pivoted arm are by on the axle sleeve hinged support axle 12, bolster 12 is arranged on the hinge seat 8, B pivoted arm 7 ends of C shape door frame pivoted arm are hinged on the expansion bearing axle 9 by axle sleeve, door leaf pivoted arm 1 is hinged on the expansion bearing axle 9 by axle sleeve, be fixed with shift fork 10 on the axle sleeve of described door leaf pivoted arm 1, be fixed with safeties by screw 2 on the B pivoted arm 7 of C shape door frame pivoted arm, safeties are by Insurance Block 3, bumper bar 14 and sheave 15 are formed, but the bumper bar 14 of upper and lower displacement is arranged on the Insurance Block 3, the upper surface coupling of the top of bumper bar 14 and hinge seat 8, sheave 15 is arranged on the bottom of bumper bar 14 by nut 16, sheave 15 is provided with groove 19, the inlet of groove 19 is provided with inclined-plane 18, shift fork 10 and groove 19 couplings that have inclined-plane 18, gap between bumper bar 14 tops and hinge seat 8 upper surfaces is regulated by cooperating between bumper bar 14 and the sheave 15, clamp nut 16 again after adjust in the gap.By the adjustment hole on the A pivoted arm 11 4 A pivoted arm 11 can be fixed at diverse location and B pivoted arm 7, realize the adjustment in gap, door leaf 20 left and right sides.

The axle sleeve bottom of described A pivoted arm 11 and the bolster 12 between the hinge seat 8 are provided with bearing 17, the axle sleeve bottom of door leaf pivoted arm 1 is provided with bearing 13 with the expansion bearing axle 9 of the axle sleeve of B pivoted arm 7, it is light flexibly that door leaf 20 is opened, and realize regulating the gap up and down of door leaf 20 by bearing 17 on the adjustment bolster 12 and the spacer thickness between the hinge seat 8.

The course of work of the present utility model is as follows, when door leaf is in closed condition, the position of shift fork 10 as shown in figures 1 and 3, shift fork 10 is on the inclined-plane 18 of groove 19.When opening door leaf 20, drive door leaf pivoted arm 1 and rotate around expansion bearing axle 9, shift fork 10 holds up bumper bar 14 by the inclined-plane 18 of groove 19, and bumper bar 14 contacts with the upper surface of hinge seat 8, door leaf pivoted arm 1 is stopped operating, and door leaf 20 can only drive C shape door frame pivoted arm and rotate around bolster 12; After door leaf 20 was opened certain angle, bumper bar 14 disengagings contacted with hinge seat 8 upper surfaces; Two kinds of opening ways are arranged this moment, first kind is that door leaf 20 continues to rotate around bolster 12, until revolve turn 90 degrees after, C shape door frame pivoted arm is run into door frame 21, door leaf 20 stops to rotate around bolster 12, continue to open door leaf 20, door leaf 20 can only rotate around expansion bearing axle 9, and shift fork 10 enters the groove 19 interior and further bumper bars 14 that hold up of sheave 15, revolves around expansion bearing axle 9 until door leaf 20 to turn 90 degrees, thereby realize door leaf 20 from 0 to 180 degree unlatching, as Fig. 1 double dot dash line position; The second way is that door leaf 20 rotates around expansion bearing axle 9 earlier, shift fork 10 enters the groove 19 interior and further bumper bars 14 that hold up of sheave 15, till shift fork 10 is stopped, door leaf 20 revolves just and turn 90 degrees, continue to open door leaf 20, door leaf 20 can only rotate around bolster 12, till C shape door frame pivoted arm is run into door frame 21, door leaf 20 accumulative totals are rotated 90 degree around bolster 12, thereby realize door leaf 20 from 0 to 180 degree unlatching equally.

Two kinds of modes are arranged when closing door leaf 20, first kind of mode is that door leaf 20 rotates around expansion bearing axle 9 earlier, shift fork 10 moves at the groove 19 of sheave 15, when door leaf 20 rotations 90 are spent, shift fork 10 moves to 18 places, inclined-plane of groove 19, bumper bar 14 resets under the effect of deadweight, shift fork 10 cooperates with the inclined-plane 18 of groove 19, door leaf pivoted arm 1 is close to C shape door frame pivoted arm, door leaf 20 stops to rotate around expansion bearing axle 9, continues to close door leaf 20, and door leaf 20 can only rotate around bolster 12 by C shape door frame pivoted arm, till closing door leaf 20, close thereby finish door leaf 20 around bolster 12 rotations 90 degree.The second way is that door leaf 20 rotates around bolster 12 earlier, after door leaf 20 rotating certain angle, hinge seat 8 upper surfaces are run at bumper bar 14 tops that hold up in the opening process, door leaf 20 stops to rotate around bolster 12, continue to close door leaf 20, door leaf 20 can only rotate around expansion bearing axle 9, shift fork 10 moves at the groove 19 of sheave 15, when door leaf 20 rotates 90 when spending around expansion bearing axle 9, shift fork 10 moves to 18 places, inclined-plane of groove 19, bumper bar 14 resets under the effect of deadweight, bumper bar 14 tops break away from hinge seat 8 upper surfaces and stop, shift fork 10 cooperates with the inclined-plane 18 of groove 19, and door leaf pivoted arm 1 is close to C shape door frame pivoted arm, and door leaf 20 stops to rotate around expansion bearing axle 9, continue to close door leaf 20, door leaf 20 continues to rotate around bolster 12 by C shape door frame pivoted arm again, until rotating around bolster 12 accumulative totals till 90 degree close door leaf 20, closes thereby finish door leaf 20.

Claims

1, a kind of 180 degree blind hinges, comprise hinge seat (8), door leaf pivoted arm (1), C shape door frame pivoted arm, on the one end hinged support axle (12) of C shape door frame pivoted arm, bolster (12) is arranged on the hinge seat (8), the other end of C shape door frame pivoted arm is hinged on the expansion bearing axle (9), door leaf pivoted arm (1) is hinged on the expansion bearing axle (9) by axle sleeve, it is characterized in that: be fixed with shift fork (10) on the axle sleeve of described door leaf pivoted arm (1), be fixed with safeties on the C shape door frame pivoted arm, safeties are by Insurance Block (3), bumper bar (14) and sheave (15) are formed, but the bumper bar of upper and lower displacement (14) is arranged on the Insurance Block (3), the upper surface coupling of the top of bumper bar (14) and hinge seat (8), sheave (15) is arranged on the bottom of bumper bar (14), sheave (15) is provided with groove (19), the inlet of groove (19) is provided with inclined-plane (18), shift fork (10) and groove (19) coupling that has inclined-plane (18).

2,180 degree blind hinges according to claim 1, it is characterized in that: described C shape door frame pivoted arm comprises A pivoted arm (11) and B pivoted arm (7), the hinged end of A pivoted arm (11) and B pivoted arm (7) is fixed with axle sleeve respectively, A pivoted arm (11) is provided with adjustment hole (4), and A pivoted arm (11) passes adjustment hole (4) by hold-down screw (5) fixedlys connected with B pivoted arm (7).

3,180 degree blind hinges according to claim 2, it is characterized in that: the axle sleeve bottom of described A pivoted arm (11) and the bolster (12) between the hinge seat (8) are provided with bearing (17), and the axle sleeve bottom of door leaf pivoted arm (1) is provided with bearing (13) with the expansion bearing axle (9) of the axle sleeve of B pivoted arm (7).