RU156460U1 - TELESCOPIC DEVICE - Google Patents

Abstract

1. A telescopic device containing two elements of an elongated tubular shape and made of elastic wire retainer, while the external element is hollow and inserted inside it with the possibility of fixed movement in the longitudinal direction, characterized in that the latch is made in the form of a half ring covering the outer an element connected to its free ends of the springy legs and supporting ears connected to them, the latter being passed through holes made in the outer element. 2. The device according to claim 1, characterized in that the annular wedge grooves are made on the inner element.

Description

The utility model relates to telescopic devices used in the production of frame tent structures, as well as to various household items, such as furniture.

A telescopic device is known that contains two elongated tubular shaped elements and a clamp made of elastic wire, while the external element is hollow and an internal element is inserted into it with the possibility of fixed movement in the longitudinal direction (see SE 425021, class F16B 7/14, publ. 23.08.1982). In this device, the latch is held on the external element only due to its multi-turn end, because of which it is possible its axial sliding under the influence of even a small load and the release of the connection of the elements.

The objective of the utility model is to eliminate the noted drawback. The technical result consists in increasing the reliability of a stable and durable fixed connection of the device.

The problem is solved, and the technical result is achieved due to the fact that in the telescopic device containing two elements of an elongated tubular shape and made of elastic wire, the retainer, while the outer element is hollow and an inner element is inserted into it with the possibility of fixed movement in the longitudinal direction, the clamp made in the form of a semicircle covering the external element connected to its free ends of the springy legs and the supporting ears connected to them, the latter being passed through holes made in the outer element. Annular wedge grooves may be provided on the inner member.

A preferred embodiment of the utility model is explained in more detail below with reference to the drawings, in which:

in FIG. 1 is a side view of a telescopic device;

in FIG. 2 - the same, top view;

in FIG. 3 - the same, rear view;

in FIG. 4 is a longitudinal section along line A-A in FIG. 1 in the open state of the latch;

in FIG. 5 is a longitudinal section along line A-A in FIG. 1 in the latched state of the latch for groove locking;

in FIG. 6 is a longitudinal section along line A-A in FIG. 1 in the latched state of the retainer for end fixing;

in FIG. 7 - clamp, top view;

in FIG. 8 - latch, view A1, taking into account the cut line B-B;

in FIG. 9 - latch, side view;

in FIG. 10 - retainer, type A2, taking into account the cut line B-B;

in FIG. 11 - latch, view A3, taking into account the cut line B-B;

in FIG. 12 - retainer, bottom view;

in FIG. 13 - retainer, type A4, taking into account the cut line B-B.

Figures 1, 2 and 3 show a telescopic device 11 used as an arc for a frame tent structure (tent), and also suitable for other purposes where telescopic folding is necessary. The device 11 comprises a hollow elongated tubular outer element 12 and inserted into it with the possibility of moving in the longitudinal direction 13, an elongated tubular inner element 14 protruding from the end of the outer element 12. The length of the device 11 can be adjusted by pushing the inner element 14 into the tubular outer element 12 and advancing from it, followed by fixing the set length.

The outer element 12 contains a pair of holes 15 opposite to each other transverse to the direction 13. The latch 16 is made in the form of a half ring 18, covering the outer element 12, connected to its free ends of the spring tabs 20 and the supporting ears 17 connected to them, which are passed through the holes 15 made in the outer element 12.

The latch 16 is arranged so that, due to its spring properties, the supporting ears 17 (Fig. 6) are inserted inside the holes 15 to the depth necessary for fixing the inner element 14 (end fixing). In order to unclench these support ears 17, that is, to extend them from the inner cavity of the outer element 12, it is necessary to simultaneously press the springy tabs 20 (Fig. 2) of the latch 16, which under certain conditions, for example, at low temperatures, simplifies the use of the device.

The inner element 14 has on its outer side in the transverse direction an annular wedge grooves 19 under the ears of the retainer 16. When combining the wedge groove 19 with the support ears 17, during the longitudinal movement of the inner element 14 relative to the outer element 12, the support ears 17 automatically snap into place wedge groove 19. In this state, a groove fixation of the telescopic device occurs (Fig. 5). With such a grooved fixation, the elements 12 and 14 of the telescopic device cannot be moved in any of the directions 13. While pressing on the springy tabs 20 of the latch 16, it is necessary to slide the inner element 14 towards the folding of the telescopic device, that is, inside the external element 12, while the supporting ears 17 open up, come out of the wedge groove 19, and the elements 12 and 14 of the telescopic device 11 can be shifted in the direction of folding the structure.

For a variant of a telescopic device with groove fixation (Fig. 5) on the inner element 14, it is possible to use an unlimited number of wedge grooves, which allows you to fix the elements 12 and 14 at different distances in the direction 13.

The proposed solution makes it possible to use the end fixation of the telescopic device impossible for other similar devices (Fig. 6), in which the support ears 17 of the latch 16 automatically snap in when the inner element 14 during longitudinal movement relative to the outer element 12 comes out of the transverse plane in which there are supporting ears 17 of the latch 16. With this fixation, the inner element 14 is supported by its end part on the supporting ears 17. With this fixation, the inner element 14 cannot move utsya inside the outer member 12, i.e. a telescopic impossible addition unit 11. In order to fold the telescopic device 11, with an end fixing, while it is also necessary to press the springy tabs 20 of the locking member 16 and inner member 14 to move in the direction of addition of the telescopic device.

At a time when the telescopic device 11 is not fixed (Fig. 4), the supporting ears 17 are supported, due to the springy property of the retainer 16, on the outer walls of the inner element 14. The edges of the supporting ears 17, which are supported on the outer walls of the inner element 14, have a rounded shape, which allows them to freely slide on the wall surface of the inner element 14. Due to this, it is possible to produce unhindered translational movement of the elements 12 and 14 relative to each other in the longitudinal direction 13.

In FIG. 7, 9 and 12 depict a variant of the retainer 16, mainly made of high-strength wire with spring properties.

The thickness of this wire may vary depending on the size of the telescopic device. The shape of the wire in the cut can also vary depending on the purpose and size of the telescopic device. All the gaps and dimensions of the latch 16 may vary depending on the size and purpose of the telescopic device.

Claims (2)

1. A telescopic device containing two elements of an elongated tubular shape and made of an elastic wire retainer, while the external element is hollow and an internal element is inserted into it with the possibility of fixed movement in the longitudinal direction, characterized in that the retainer is made in the form of a half-ring covering the outer an element connected to its free ends of springy legs and supporting ears connected to them, the latter being passed through openings made in the outer element. 2. The device according to p. 1, characterized in that the annular wedge grooves are made on the inner element.

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