RU2304739C1 - Detachable joint - Google Patents

Abstract

FIELD: mechanical engineering.

SUBSTANCE: detachable joint comprises female and male members and locking members set in the grooves made in the sides of the female and male members that face each other and bent along the radius. The sides of the locking members are inclined one with respect to the other, and the face of the female member is provided with hollows whose depth is equal or larger than the width of the ring groove in the female member. The sides of the locking member cooperates with the outer surface of the groove made in the female member from one side, and with the inner surface of the groove made in the male member from the outer side.

EFFECT: enhanced reliability.

1 cl, 3 dwg

Description

The invention relates to the field of engineering, in particular to detachable connections.

It is known a detachable connection of female and male parts (see SU 1250746 A1 F16B 21/02), connected to one another by means of a fixing element made in the form of tightly laid to each other through a groove made on the end of the male part in an annular cavity formed by mating grooves of flat split rings.

The disadvantages of the known solutions include the difficulty of dismantling the locking elements, and therefore the details.

The closest is essentially a connecting device (see SU 2194905 F16L 19/08, prototype), containing female and male parts, on the mutually reversed surfaces of which matching annular recesses are made, in the latter a fixing element is installed - two rings, one of elastic material and the other - interacting with it from a material with a memory effect (MEP),

The disadvantages of this solution include a certain temperature mode of operation of the joint due to the presence of MEP, and loose connection of parts due to the movement of the elastic ring under the action of the MEP into the annular recess of the covered part without interference.

The purpose of the invention is the creation of a detachable, gapless, tight connection of two parts.

This goal is achieved by the fact that the lateral working surfaces of the locking elements are made at an angle to each other, and at the end of the enclosing part there are recesses with a depth equal to or overlapping the width of the annular groove, while the locking elements are provided with a bend.

In figure 1. shows a section of the connection; figure 2 is a view of figure 1; figure 3 is a view of B in figure 2; figure 4 is a variant of figure 1.

The detachable connection consists of a male part 1, a female part 2, on the mutually reversed surfaces of which annular grooves 3 and 4 are made, respectively. Moreover, the grooves are made in such a way that when the locking element 5 is placed in them, the latter interact with their lateral surfaces 6 and 7 inclined to each other, on the one hand, with the outer side surface 8 of the groove 4, and on the other, with the inner side surface 9 of the groove 3. Stop element 5 has a radial bend 10, and recesses 11 are made at the end of the enclosing part 2, and their number is equal to the number of locking elements 5, and the depth of the recesses is equal to or greater than the distance from the end to the inner side surface 12 of groove 4. Detail 1 is tightened relative to the part 2 by the sealing ring 13.

The assembly of the connection is as follows. A sealing ring 13 is installed in part 2, then axial movement of part 1 is placed, then stop elements 5 are inserted into groove 3 through groove 11 and inserted into the window formed by grooves 3 and 4, until the inclined side surfaces 6 and 7 The grooves 8 and 9 interacting on the lateral surfaces will not seal parts 1 and 2 together. The joint is ready for operation. Disassembly of the connection is in the reverse order. Acting on the bends 10 of the locking elements 5, they are removed from the windows formed by the annular grooves 3 and 4, after which the parts are disconnected by axial movement.

The choice of the number of locking elements and end recesses depends on the diameter of the connected parts 1 and 2. The minimum number of them can be two.

The execution of the inclined surfaces 6 and 7 of the locking elements 5 with an angle at the apex smaller than the angle of self-braking excludes their locking. If it becomes necessary to lock them, for example, when the connection is operating under vibration, a known method of locking with a wire can be applied, for this purpose, holes of the corresponding diameter are made in the bend 10 of the locking elements 5 and, using the gap between surfaces 7 and 12, the locking is performed or performed on the opposite bend 10 at the end of the locking element 5 was cut and bend one of the parts of the cut.

Thus, due to the use of locking elements with inclined lateral surfaces and the presence of recesses in the female part for their placement in the grooves, a quick and tight connection of the parts, and, if necessary, locking is made.

Claims (2)

1. A detachable connection containing female and male parts, on the mutually reversed surfaces of which there are annular grooves with locking elements installed therein, bent in radius, characterized in that the lateral working surfaces of the locking elements are made at an angle to each other, and at the end of the female part notches are made with a depth equal to or overlapping the width of the annular groove of the male part, with the lateral surfaces of the locking element interacting on one side with the outer side the groove surface of the female part, and on the other with the inner side surface of the groove of the male part. 2. The detachable connection according to claim 1, characterized in that the locking elements are provided with a limb.

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