CN86203358U

CN86203358U - Single tube free hinge

Info

Publication number: CN86203358U
Application number: CN 86203358
Authority: CN
Inventors: 霍建忱
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-05-17
Filing date: 1986-05-17
Publication date: 1987-09-30

Abstract

The utility model provides a single tube free hinge, particularly a single tube free hinge which is suitable for door leaves. The single tube free hinge is composed of an omega-shaped tube base (1), a tank-shaped chain bracket (5), rotary short shafts (2), (9) and an elastic force device. In installation, the center of the rotary short shafts of the single tube free hinge is positioned on the center line, which is different from the traditional way that double tube hinges are positioned on both sides of a door. The maximal single side field angle of the utility model is 110 DEG. The fix position of the hinge is reliable and no bump phenomenon happens. Steel is saved and the cost can be decreased by about one half.

Description

Single tube free hinge

The utility model relates to a kind of free hinge, particularly is applicable to the single tube free hinge of free door leaf.

Existing traditional free hinge is two-tube form, and two pipes are exposed to the both sides of door respectively, and each bears the open and close task of a side.The reset response that it not only plays door also plays positioning action, that is when door is in closed condition, makes door be close to the effect of doorframe.This has just increased the burden of spring, a denier elastic weaken or centrifugal force excessive, door, is not disinclined to regulate because operation is very convenient though adjusting device is arranged just from moving doorframe, door just has the collision phenomenon generation in the process that resets.This is destructive bump, and is harmful, because be two-tube, also is a kind of waste to steel again.

The purpose of this utility model provides a kind of improved single tube free hinge, and this hinge location is reliable, easy to adjust, not fragile.

The utility model is achieved in that this single tube free hinge is made up of Ω type base, grooved chain seat, minor axis, torque spring and adjusting device.At the two ends of Ω type base, respectively insert the minor axis of a tape spool shoulder, the outer face of two minor axises is fastening by two ears or side handles of a utensil of screw and grooved chain seat, constitutes hinge.Base and chain seat are screwed respectively on doorframe and Men Bian.Its axis of rotation is positioned on the center line of door.For the one-sided maximum subtended angle that makes door reaches 110 degree, the axle center to the distance of base installed surface greater than distance to chain seat installed surface.

For door leaf cuts out automatically, be provided with elastic force apparatus.One torque spring is arranged in pipe, the inner face of two minor axises is all made shift fork up and down, and the spring upper end is controlled by the shift fork of last minor axis, and the spring lower end is controlled by the shift fork of following minor axis by adjusting device, respectively establish a latch in the tube wall up and down, this pin is to limit the spring end pivot region.

If the door by original position (fastening position) under the effect of external force when clockwise direction rotates, the shift fork twisting spring of last minor axis, the shift fork of following minor axis is in vacant state, and down latch has blocked the rotation of spring lower end by adjusting device, and spring is in the state of tightening; Then when removing external force, because the effect of elastic force, goalkeeper is to revolution counterclockwise.Because effect of inertia, door is not static to original position, and it also will rotate to an angle, at this moment the shift fork of going up minor axis is in the room, and last latch has then blocked the rotation of spring upper end, and the shift fork of minor axis has just tightened spring down.When being used to the power disappearance, door will turn round again under the effect of elastic force clockwise.Like this, spring two ends is up and down alternately tightened and is stopped, has just been finished the task of freely closing of door by a torque spring.The strong and weak available adjustment device of elastic force is finished.

The single tube free hinge of making is so not only located reliably, and is easy to adjust, and saves steel than original two-tube free hinge.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Fig. 1 is the sectional view of the utility model single tube free hinge.

Fig. 2 is the vertical view of Fig. 1.

As shown in Figure 1, the single tube free hinge is made up of the steel minor axis (2,9) of Ω type base (1), grooved chain seat (5) and two tape spool shoulders.Ω type base (1) is formed by the steel plate compacting of certain mechanical strength.During use, base and chain seat are installed on doorframe and the Men Bian (not drawing among the figure) with screw respectively.The thin footpath of two minor axises and the internal diameter of pipe are for movingly, and two ears or side handles of a utensil of the outer face of minor axis and chain seat tighten together with screw (13), and shift fork is arranged on the inner face.The rotation of fork controls torque spring (4) upper end of last minor axis (2), the shift fork of lower shaft (9) rotates by the lower end that adjusting device is controlled torque spring (4).Last untie-sell (3) and (8) are from the pivot region at relative direction restraining spring both ends.

Drive chain seat (5) rotates to clockwise direction under the effect of external force if door is by original position (fastening position of door), the shift fork of last minor axis (2) just twists the upper end of spring (4), latch (8) has blocked the rotation of spring lower end by adjusting device, and the shift fork of minor axis (9) is in the room, at this moment the words that spring is tightened, when removing external force, spring (4) begins acting, and it twists door to revolution counterclockwise by the shift fork of last minor axis (2).When door by the effect of original position in external force under drive chain seat (5) when counter clockwise direction is rotated, the shift fork of following minor axis (9) is just by adjusting device twisting spring lower end, latch (3) has but blocked the rotation of spring upper end, and the shift fork of going up minor axis (2) is in the room, and spring is at this moment tightened from the lower end; When removing external force, spring just begins acting, and the shift fork twisting door of minor axis (9) turned round to clockwise direction under it passed through.

The adjusting of present embodiment is achieved in that down that there are regulating block (6) and (7) of two steels the top of minor axis (9), the internal diameter of its external diameter and pipe is for movingly, and be uniformly distributed along the circumference and make a plurality of grooves, contact surface between two regulating blocks is mixed with zigzag, plays the effect of unidirectional locking in the process of screwing spring.Regulating block (6) is made shift fork or concave channels with the end that spring (4) contacts, and in order to the twisting spring, regulating block (7) is made the yi word pattern boss with the shift fork contact surface of minor axis (9), is stirred and latch stop by shift fork.When needing to regulate elastic force, earlier door leaf is changeed certain angle by counter clockwise direction, follow closely the groove that blocks on the regulating block (6) with unit from hole (12) again, and then be inserted in the groove of regulating block (7) with the hole, garden that another yuan nail passes the collar (10), make after its revolution certain angle, two yuan of nails are transferred to get final product again.Square hole (11) is convenient to the collar (10) and is rotated and offer.

When this hinge is installed, a gap is arranged between door and frame, can on the door limit, follow closely a batten or anything else solves, can certainly on the door limit, dig a Baltimore groove this hinge is installed, but uneconomical.

Claims

1, a kind of single tube free hinge, single tube free hinge especially for free door leaf, it is characterized in that: it is made up of minor axis [2,9], the torque spring major parts such as [4] of Ω type base [1], grooved chain seat [5], tape spool shoulder, two minor axises [2,9] place the two ends of Ω type base respectively, the thin footpath of minor axis [2,9] and the internal diameter of Ω type base [1] are for movingly, fixedly connected with the ears or side handles of a utensil of chain seat [5] in minor axis [2,9] outer face, the parts of stirring of drive torque spring [4] are arranged on the inner face of minor axis [2,9].

2, according to the described hinge of claim 1, it is characterized in that: a latch (3,8) is respectively established at two ends in the pipe of Ω type base (1), and they have limited the pivot region of upper and lower two torque springs at both ends the other way around.

3, according to the described hinge of claim 1, it is characterized in that: the parts of stirring on the outer face of minor axis (2,9) are made shift fork shape.

4, according to the described hinge of claim 1, it is characterized in that: between described minor axis (9) down and the torque spring (4) adjusting device is arranged, following minor axis (9) is stirred the torque spring lower end by adjusting device.

5, according to the described hinge of claim 4, it is characterized in that: described adjusting device is made up of adjusted piece (6), following regulating block (7) and the collar (10), plays the effect of unidirectional locking in the process of screwing spring.

6, according to the described hinge of claim 5, it is characterized in that: on described, following regulating block (6,7) the external diameter and the internal diameter of pipe are for movingly, and make uniform a plurality of grooves along circumference, shift fork or matrix groove are made in the upper surface of adjusted piece (6), be used for the control spring lower end, zigzag is made in the lower surface, match with the upper surface sawtooth of following regulating block (7), the in-line boss is made in the lower surface of following regulating block (7), limit by the fork controls of following minor axis (9) with by latch (8), the collar (10) is isometrical with pipe, and is drilled with uniform hole, a plurality of garden along circumference.

7, according to the described hinge of claim 1, it is characterized in that: the axis of rotation of hinge is positioned on the center line of door, the axle center to the distance of base installed surface greater than the distance of installing to the chain seat, thereby the one-sided maximum subtended angle of door can reach 110 degree.