Mechanism of hinged latch

FIELD: construction.

SUBSTANCE: as an operational force a natural phenomenon is used - atmospheric pressure. The main structural component of the mechanism - a body reacting to atmospheric pressure - is a geometric shape - a box, square in cross section. The body is manufactured by compression from an airtight elastic resilient material and has four solid faces, four elastic ribs, and instead the two end faces - two elastic dome. The body is sealed, and when negative pressure is created, acts as a pivot of four sections, being deformed by force of atmospheric pressure into a rhomboid parallelepiped with a sharp angle of 45°. In the mid-points of four faces of the parallelepiped - shaped body there are stops formed that when bound up in pairs can increase the degree of vacuum and atmospheric pressure, the force of impact, without compromising the angle of the rhomb below 45°. The mechanism is attached by one face to the side wall of the furniture, and by an adjacent face - to the door of the furniture.

EFFECT: reliable and efficient work of a hinged latch and ability to hold the door in a closed and open position with a lock effect.

5 dwg

The invention relates to the mechanisms producing the fixing of doors furniture and other doors in the closed and open positions. There are many different mechanisms that acts as a hinge-latch door furniture (cabinets, buffets, tables and so on).

These mechanisms contain many details of the complex structure and high intensity (springs, levers, Cams and the like), but fix the position of the doors are not clearly and firmly.

The purpose of this invention is to provide mechanism of the hinge-latch doors, simple in construction, easy to manufacture and provides reliable and accurate operation.

Among the existing mechanisms hinge-clamps analogues to the mechanism proposed by this invention, not available.

This goal is achieved by two factors:

1. As the applied force is natural phenomenon - atmospheric pressure, which is present everywhere and always.

2. The main constructive element of the mechanism - the body reacting to atmospheric pressure, is the geometric shape of the parallelepiped with the introduction of the following features:

a) four parallel faces in cross section form a square,

b) ribs act as hinges,

C) two end faces replaced by elastic domes,

g) all parts of parallel is piped made of airtight material (for example, rubber).

Thanks to these characteristics parallelepiped able to act as a hinge chetyrehzvennoj (see I.I. II Artobolevsky "Theory of mechanisms and machines", Moscow. Ed. The science. 1988).

The box is a sealed enclosure that allows you to create a vacuum. When creating the vacuum, the housing under the influence of atmospheric pressure deformation of the square in rabidly and directly, without any details performs the operation of the hinge-latch the door in closed and open positions.

The design of the sealed enclosure of a parallelepiped, which is essentially the proposed mechanism is presented in figure 1 outside static condition, figure 2 is in working condition rhomboidea parallelepiped.

Four parallel faces 1 are parts of a hinge mechanism, edges, 2 - hinges, two end faces replaced domes 3, one face has a rubber valve 4 for pumping and pumping air, similar to that used in football and volleyball balls. At the midpoints of the four sides formed by the lugs 5. In one of the edges formed by the handle 6 to the switching mechanism.

Sealed-box is made by pressing of the elastic, airtight elastic material (e.g. rubber) with holding the volcanic mountain rage the purpose of raw materials.

Vulcanization provides the required properties for all parts - temperature resistance and cold resistance; for the four sides and lugs - hardness for edge and end domes - elasticity and firmness.

Pressing is formed a hole for the valve 4.

The mechanism is illustrated by diagrams figure 3, in which he presents in the form of articulated chetyrehzvennoy. Refer to the schemes refer to the structural elements in figures 1, 2, namely: 1 - the four elements (faces), 2 - four hinge (ribs), 6 - shift knob.

In the diagram figa mechanism shown in a static, non-operating: its cross-section is square, the internal volume V₁proportional to the area of a square S₁. The mechanism is in a state of stable equilibrium, because both the outside and inside of atmospheric pressure.

To bring the mechanism to a working state after the valve 4 to pump out some air. In the mechanism (parallelepiped) is a dual process.

a) Created a bit of a vacuum and under atmospheric pressure mechanism is deformed from the square in rabidly, end domes are drawn inward, extended in the direction of the large diagonal of the rhombus, and do not hinder the deformation of the box (see figure 2 and scheme figb).

b) Rhomboidea form is smaller than the square, the density of the air inside is growing and at any stop pumping air is a balance between atmospheric pressure and the pressure of the air inside, and the deformation mechanism is terminated.

The exhaust air is conducted until the acute angle of the rhombus is equal to 45°. At this point, the cross-sectional area of a parallelepiped S₂=S₁×sin45°. As sin45°=0,707, V₁=V₁×0,707, i.e. the volume V₂decreased rounded to 0.3 relative to the volume in an unusable state.

In this position, when the acute angle of the rhombus is 45°, and formed it stops 5, indicated by letters a-b and g-b (see figb), pairwise closed, the mechanism operates as a hinge-latch, locking the door in closed position (see figure 4).

To switch the mechanism from this extreme position to another extreme position corresponding to the open door, the handle 6 is necessary to apply an external force F (for example, force the hands of man, see figv).

The force F in the first moment overcomes the initial force of atmospheric pressure, which occurred earlier when pumping air and deformation of a parallelepiped in rabidly, which reduced its volume by 0.3.

Therefore, the initial force of atmospheric pressure acting on the verge of mechanism, equal to 0.3 of a full atmospheric pressure 1,033 kg/cm²i.e. curved 0.3 kg/cm².

the donkey overcome this pressure under the force F is the rotation mechanism counterclockwise this increases the volume of the parallelepiped and the degree of vacuum inside it, which causes the increase of the current at him in atmospheric pressure. At the time when the shape of the box is a square, its volume increases by 0.3 (as described above), the degree of vacuum inside also increases by 0.3, and the atmospheric pressure becomes maximum (see diagram Figg). At this point, the position of the box is unstable, so he abruptly moves into its second position of stable equilibrium, making an abrupt turn counterclockwise by 90° (see diagram figd).

Thus, due to changes in the volume of the parallelepiped in the shifting mechanism of the atmospheric pressure acts on him like a spring.

In the second equilibrium position, when the acute angle of the rhombus reaches 45° and formed it stops 5, indicated by letters a-g and b-b pairs are closed (see diagram figv), the mechanism also functions as a hinge-latch, locking the door in the open position.

Mount hinge-latch in the piece of furniture (Cabinet) is shown in figure 4 and 5, on which Dan view of the Cabinet top with conventionally the cover removed. Before mounting the hinge arm is located outside of a static condition (see figa). After pumping part of air through the valve 4 hinge-latch force of atmospheric pressure is deformed in rabidly parallelepiped with an angle of a rhombus is 45° (see 4 and 2B).

In this position, the door 12 when it is not docked) is mount hinge-latch to the side wall of the Cabinet 7 by a transition pads 8 and plate 9, 10 by screws 11 (see figure 5). After that, the hinge-latch means of the handle 6 (2) in the other extreme position (see figv) and fastened to the door 12 of the Cabinet through the plate 13 by screws 11 (see figure 5).

Opening and closing the Cabinet door is the handle 14 to which efforts are made with human hands F1, F2, overcoming the atmospheric pressure acting on the faces of the hinge-latch. When this door make an abrupt 90°rotation.

The lugs 5 in the hinge-latch (see figure 2) enable additional air exhaust to increase the degree of vacuum, and hence the effect on the mechanism of atmospheric pressure, preventing reduction of an angle rhomboidea parallelepiped below 45°.

This allows you to set the degree of vacuum and the force of atmospheric pressure, which is hinge-latch to hold the door in closed position with the effect of the lock.

Figure 1.

The hinge-latch doors - square parallelepiped in a static non-working position.

Figure 2.

The design of the hinge-latch doors - box outside static position and two operating positions.

Figure 3.

Schema hinge is CSO of chetyrehzvennoy, explaining the operation of the hinge-latch doors.

Figure 4. View of the Cabinet from the top, illustrating the method of attachment of the hinge-latch (door closed).

Figure 5. View of the Cabinet from the top, illustrating the method of attachment of the hinge-latch (door open).

The hinge-latch doors, characterized by the fact that as the applied force is used, the atmospheric pressure which acts on the sealed enclosure is a square parallelepiped shape made of airtight material, with four solid sides, four elastic elastic edges, two end elastic domes and four formed at the midpoints of the faces of the stops, making an airtight case when pumping out the air and create a vacuum acts as a hinge chetyrehzvennoj that the force of atmospheric pressure deformed in rabidly parallelepiped with an acute angle of 45° and is attached by one edge to a side wall of the furniture and related her face - to door furniture through transition pads and plates that provides the mechanism for the role of the hinge-latch the door in closed and open positions with interlocking pairs of lugs allow you to install pumping a higher degree of vacuum and the force of atmospheric pressure and thereby hold the door in Zack is item position with the effect of the castle.