UA80668C2 - Lock-type joint - Google Patents

Abstract

The invention relates to general machine-building, in particular to devices for connection of elements of constructions with following fixation of those and is intended for split connection of elements of construction of means of transportation, mostly aircrafts. A lock-type joint has a body, locking element, mounting element and connecting elements. The joint has front and back covers. The locking element is made split and consists of bar and key insert. The inner locking surface of bar has at least one section on which tangent line to the surface forms obtuse angle with axis of locking element, and outer locking surface or mounting element is congruent to inner locking surface of bar, between bar and key insert at least one control pad is installed. The body has restrictor of angular displacement. The invention increases reliability of fixation of elements of construction, decreases requirements on accuracy of mutual placement of lockelements, increases rigidity of connection of elements one of which is thin-wall element, and reliably connects and prevents self-opening of elements of construction operating under conditions of vibration.

Description

Description of the invention

The invention relates to general mechanical engineering, namely to devices for connecting structural elements 2 with their subsequent fixation and can be used for releasable connection of structural elements of vehicles, preferably elements of aircraft.

Known removable connection International application MU 99/20909, cl. E16B 21/09, publ. 29.04.99), consisting of two elements. The first element has two flat parts, one of which has a hole with a wide and narrow section, and the second has a pin located opposite the narrow section. The second element contains a 70 hollow horseshoe spike having a tapered portion at the base and a thickening at the tip. When connecting the first and second elements, the horseshoe spike is driven through the wide section of the hole and moves to the region of the narrow section of the hole. The elements are connected after their rotation relative to the axis of the spike.

Among the disadvantages of this invention, one should include a limited field of application due to the impossibility of using it to connect structural elements with a lock, if they are hinged. This 72 is explained by the fact that in this known invention, to connect structural elements, it is necessary to move one element relative to another in several directions. The disadvantages should also include the incomplete fixation of the structural elements that are connected, because the connection involves the mutual rotation of these elements, while the fixation is ensured only in a given range of the relative angular position of the structural elements that are connected, and outside this range spontaneous disconnection of these elements is possible.

A well-known rack cargo lock (US Patent Mob, 241,109, class A47РО05/00, publ. 05.06.01), consisting of an I-shaped mounting bracket and a vertical rack. The first shelf of the bracket is adjacent to the front face of the vertical rack, and the second - to the side face of the vertical rack. Mounting pins and holes are placed on the first shelf of the bracket, and a resilient locking element with a locking pin is installed on its outer surface. This pin protrudes through the holes in the bracket and in the vertical post, thereby preventing the movement of the bracket relative to the vertical post, while fixing the elements (39 of the structure.

The disadvantage of this device is the impossibility of using this lock to connect hinged structural elements, due to the need to perform a complex movement of one element of the lock relative to another to fix them. The connection resource is low, because the lock design contains a flexible element, which with frequent use is prone to rapid wear and, as a result, ceases to perform its functions, which leads to the need to replace it. Disadvantages should also include increased requirements for the accuracy of installing the lock elements on the connecting structural elements. Unreliability of fixation, Ha"), because when working in vibration conditions, there is a possibility of the fixation pin installed on a flexible element coming out of the hole in the bracket and, as a result, spontaneous disconnection of the structural elements. co

Known mounting device International application UUO 01/66963, cl. E168B 21/02, publ. 13.09.0111, which includes the covered part and the covered part. The part to be covered has a dividing part located between the closing parts, which form two supporting protruding planes. The covering part has a "cutout, limited in the longitudinal direction by two projecting planes. With 50 The disadvantage of this invention is the low reliability of the connection when working in vibration conditions, because the covered part is fixed in the covered part only due to frictional forces. Increased requirements for the accuracy of installation of the lock elements on the connecting structural elements, because the present invention does not provide for the possibility of adjusting the relative position of the covered part and the covering part after their installation on the connecting structural elements. The disadvantages include the low stiffness of the connection when using a lock to connect elements that are a thin-walled structure. so Closest to the invention in terms of technical essence, purpose and the result achieved, and av | the chosen prototype is a connecting lock | Patent of the Russian Federation Mo97101468 cl. Eb4 (57/30, publ. 27.03.99), which includes a case, a locking element, a mounting element and connecting elements. The body is two

It has plane-parallel vertical walls with a sickle-shaped cutout, connected to each other by means of a shelf. b 20 The locking element is a flat locking lever installed between the vertical walls of the case with the possibility of turning around an axis that is rigidly connected to the vertical walls of the case and is parallel to the longitudinal axis of the lock.

The disadvantages of this invention are: - low reliability of fixing the structural elements that are connected, because in the direction perpendicular to the plane of rotation of the locking lever, the mounting element is fixed only due to the force of friction that occurs

ГФ) between the mounting element and the sickle-shaped cutout of the case; yuyu - increased requirements for the accuracy of the installation of the lock elements on the connecting structural elements, because there is no provision for the possibility of adjusting the relative position of the locking locking lever and the mounting element after their installation on the connecting structural elements; 60 - low rigidity of the connection when installing the lock on a thin-walled structure, due to the small surface area of the contact of the installation elements of the lock with the structural elements. This leads to the need to use additional elements to increase the rigidity of the connection. The invention is based on the task of increasing the reliability of fixing the elements of the structure that are connected, reducing the requirements for the accuracy of the mutual location of the elements of the connecting lock on the elements of the structure, and increasing the rigidity of the connection of the elements, one of which is a thin-walled structure.

The task is solved by the fact that the connecting lock contains a housing installed on the first structural element, a locking element installed in the housing, a mounting element installed on the second structural element, and connecting elements. According to the invention, the lock includes front and back covers that are connected to each other by means of screws. The locking element is made detachable and consists of a bolt and a key insert, and the internal locking surface of the bolt contains at least one area in which the tangent to the specified surface forms an obtuse angle with the axis of the locking element, and the external locking surface of the mounting element is congruent with the internal locking surface of the bolt. At least one adjusting shim is installed between the bolt and the key insert. The housing contains an angular displacement limiter. 70 In addition, in another specific embodiment, at least one adjusting gasket is installed between the bolt and the housing.

A hole is made in the key insert and bolt, in which there is a locking element, made in the form of a screw, and placed on the thread. The present invention provides: - increased reliability of the connection due to the design of the contact surfaces of the bolt and mounting elements, /5 in such a way that the internal locking surface of the bolt contains at least one area where the tangent to the specified surface forms an obtuse angle with the axis 5 of the locking element , and the outer locking surface of the mounting element is congruent with the inner locking surface of the bolt. This execution of the locking surfaces allows geometrically closing the mounting element in the cavity of the locking element, in three orthogonal directions of the relative position of the connecting elements. - reducing the requirements for the accuracy of the mutual location of the lock elements on the connecting structural elements, due to the fact that it is possible to compensate for the errors of the mutual location of the mounting element relative to the locking element, after they are installed on the structural elements. This is achieved by using shims placed between the bolt and the key insert or between the bolt and the housing, depending on the error. сч - increasing the rigidity of the connection of elements that are a thin-walled structure. The use of front and back covers in the design of the connecting lock allows to increase the area of the connection of the lock with i) elements of thin-walled construction, thus increasing the rigidity of the connection of the lock with the design elements.

It should be noted that this invention allows you to reliably connect the elements of a structure that operates under conditions of vibration, and the use of a locking element in the design of the lock allows you to avoid spontaneous disconnection of the structural elements. In addition, when applying a load to the lock body, the mounting element is reliably and rigidly fixed in the locking element. Ge

Thus, the claimed invention makes it possible to increase the reliability of the detachable connection of two structural elements, ensuring the fixation of their mutual position in three orthogonal directions, to reduce the requirements for

Зз5 to the accuracy of the mutual location of the lock elements on the elements of the structure that are connected, as well as to increase the rigidity of the connection of the elements, one of which is a thin-walled structure.

Figure 1 shows a general view of the connecting lock; Fig. 2 - section AA; Fig. 3Z - cross-section B-B.

The composition of the connecting lock includes the body 1, which is installed on the first structural element, and the locking element 2, which is installed in the body 1. The composition of the connecting lock also includes the mounting element C, which is installed on the second structural element. Body 1, made in the form of a hollow c cylinder with a cutout on the side surface. The lock also includes the front 4 and back 5 covers, connected to each other by means of screws. The specified covers are connected to the body 1 and are designed to increase the stiffness of the connection;" structural elements when installing a connecting lock on a thin-walled structure. The locking element 2 consists of a bolt 6 and a key insert 7, interconnected by means of connecting elements 8,

For example, pins. Key insert 7 on its outer surface contains. Indentation 9, intended for

Go! the key The internal locking surface 10 of the bolt 6 is congruent with the external locking surface 11 of the mounting element

C. The latch b also has a radial cutout designed for the insertion of the mounting element 3. Between the latch 6 and the key insert 7 and/or between the latch 6 and the body 1, adjusting spacers 12 are placed, which repeat

Ge» the shape of the cross section of the bolt 6 and are designed to adjust the axial position of the bolt 6 relative to the body 1 by increasing or decreasing the thickness and/or their number between the body 1 and the bolt 6, or between

Me, bolt b and key insert 7. In the hole made in the key insert 7 and bolt 6, there is a locking element 13, made in the form of a screw, and placed on the thread. In housing 1, a hole is also made in such a way that, in the closed state of the lock, it coincides with the hole in the key insert 7 and bolt 6. In housing 1, the limiter 14 of angular movement is immovably installed, made in the form of a pin and designed to limit the rotation of bolt 6 by an angle , due to the angular size of the bend 15.

The invention is used as follows. Install the key for opening the lock in recess 9

F) of the key insert 7. Combine the cutouts on the bolt 6 and on the body 1. Insert the mounting element 3, installed on the second structural element, through the specified cutout into the cavity of the bolt 6. Turn the locking element 2 with the help of a key to the angle specified by the angular size of the recess 15 on the bolt b, up to the stop in the limiter of the angular displacement 14. At the same time, the bolt 6 geometrically locks the mounting element 3, fixing its cross section (А-А) in the cavity of the bolt 6. In the closed state of the lock, the hole in the housing 1 coincides with the locking element 13, which is installed on the thread in the key insert 7 and bolt 6. The lock is locked in the closed state by twisting the locking element 13 until it enters the hole in the housing 1. At the same time, the locking element 13 prevents the rotation of the locking element 2 relative to the housing 1. 65 Invention, which is claimed, allows to increase the reliability of fixing the elements of the structure that are connected, to reduce the requirements for the accuracy of the mutual location of the elements of the lock on the elements of instructions Increase the rigidity of the connection of elements, one of which is a thin-walled structure, and also allows you to reliably connect and prevent spontaneous disconnection of the elements of the structure that works in vibration conditions.

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Claims (1)

Formula of the invention (Se) 1. A connecting lock for connecting two structural elements, containing a housing installed on the first structural element, a locking element installed in the housing, a mounting element installed on the second structural element, and connecting elements, which is characterized by , that the lock includes front and rear covers that are connected to each other by means of screws, the locking element is detachable and consists of a bolt and a key insert, and the internal locking surface of the bolt contains at least one area in which the tangent to the specified surface forms an obtuse angle with the axis of the locking element, and the external locking surface of the mounting element is congruent with the internal locking surface of the bolt, at least one adjusting gasket is installed between the bolt and the key insert, the housing contains an angular movement limiter. at, c 2. The connecting lock according to claim 1, which is characterized by the fact that at least "» one adjusting gasket is installed between the bolt and the body. " C. A combination lock according to claims 1, 2, which is characterized by the fact that the key insert and the bolt have a threaded hole in which the locking element, made in the form of a screw, is located. Co. Official Bulletin "Industrial Property". Book 1 "Inventions , useful models, topographies of integrated microcircuits", 2007, M 17, 25.10.2007. State Department of Intellectual Property of the Ministry of Education and Science of Ukraine. (22) b 50 IR e) F) ime) 60 b5