DE9319198U1 - Retractable handle for suitcases and cases - Google Patents

Description

Applicant:

DR.STRUNKMANN-MEISTER TRUSTEE-

AND PARTICIPATION COMPANY MBH (Dr.SMT)

Ainmillerstrasse 50

80801 Munich

Munich, 14.15.1993 Handle

Description

Retractable carrying handle for suitcases and gases

The invention relates to a retractable carrying handle for suitcases and cases, which enables the production of a functionally, ergonomically and design-optimized carrying handle for suitcases and cases with a minimum of material and effort. The carrying handle according to the invention is particularly suitable for cases for transporting computers, e.g. lab tops.

Retractable carrying handles are known which are attached to the case (or suitcase) with two links with axes of rotation in the longitudinal axis of the carrying handle and which, when folded over, fit into a corresponding recess in the case shell. This solution has the disadvantage that a case cannot be made from two shell halves of the same shape. Furthermore, this solution is unsatisfactory in terms of design, since the handle remains visible even when retracted, whereas goods and simple lines are preferred in the IT sector, particularly in the computer sector. In contrast, the solution according to the invention makes it possible to shape the upper handle shell 1, for example, rectangular and smooth, in any case adapted to the shell half(s) in such a way that a functionally and design-optimal form fit is achieved between the case wall and the carrying handle when retracted.

There are known carrying handles that also achieve the above-described form-fitting, but they do so with complex mechanisms, the disadvantages of which are not only due to the complex manufacturing process, but above all in the fact that the case or suitcase must be shaped in a very specific way to accommodate the mechanisms. In contrast, the solution according to the invention consists in combining the entire recessed mechanism into a compact form - in that all elements of the mechanism are practically under the upper handle shell -

Dr.SMT, 14.12.1993 Carrying handle

space - which makes it possible to attach the handle according to the invention to any conventional case or shell case - e.g. using two bolts or screws - with minimal structural changes to the case or case

A further disadvantage of previously known retractable handles is that the locking of the handle in the retracted position is either inadequate, so that the handle, for example, interferes with the handling of a lab top in the calculation position by folding it out even with the slightest impact, or that the locking is too tight, which makes handling when folding out the handle unsatisfactory because too much force has to be used and there is a risk of fingernails breaking off, for example. According to the invention, this disadvantage is eliminated by a special arrangement of the locking elements.

Another disadvantage of previously known handles is that when the joints are positioned transversely to the handle axis, the handle can come closer to the case or suitcase during typical swinging movements, causing the carrying hand to become trapped between the case and the handle. This disadvantage is eliminated by the inventive restriction of the pendulum angle of the carrying handle.

Finally, the disadvantage of the previously known handles is that the excessive construction effort required to bring about a form-fitting recess in the handle requires too much material, which in turn - together with the inadequate shaping of the individual elements - prevents the compact shape of the recessed handle. According to the invention, this disadvantage is eliminated by a corresponding shaping of the individual elements of the retractable carrying handle.

Examples of embodiments are now described with reference to the accompanying drawings. Ro. 1

shows the carrying handle according to the invention with all its elements - with the exception of the joints and the locking springs - in an oblique top view, in the cut-out state, ready for carrying. Under the upper handle shell 1, on which the palm of the hand rests when carrying, the back of the handle 2 of the lower handle shell, which is not fully visible here, can be seen, around which the fingers wrap when carrying. The connection between the handle bar consisting of the two handle shells and the case or suitcase is made by the two brackets 3, which are movably hinged to the carrying bar and to the case with bending axes positioned transversely to the carrying bar.

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-3-Dr.SMT, 14.12.1993 carrying handle

In the embodiment shown in Fig. 1, the carrying handle is mounted on the edge of a gas shell in such a way that the carrying handle can be pulled upwards, ie out of its recess, from the edge 4 of the case shell by reaching under the upper handle shell 1 in the recessed position. In another embodiment, the carrying handle is placed on the frame of one half of the handle shell, with the two case shells being shaped in a trough-like manner in this area to allow the fingers to reach under the carrying bar in the recessed position.

Flight 2

shows the carrying handle according to the invention in side view - except for the upper handle shell in the folded-out state 1 - in section. The surface of the recessed upper handle shell 1' forms a plane with the surrounding case or suitcase shell 6 - shown here partially broken away.

The protruding brackets 3 each have a guide cylinder 7 with pivot point A at their upper leg ends and are articulated around a transverse axis at the lower pivot point B. If pressure is exerted on the upper handle from top to bottom, the two pairs of guide cylinders 7 move when the upper pivot points A are slightly closer to the middle than the lower pivot points B (tilted inwards) when the carrier is unfolded, guided by the guide rails 8 incorporated into the lower handle 5 and the inner roof 9 of the upper handle 1 towards the middle. This movement process is completed when the support beam sits on the base parts 10. In this position, in which the carrying handle is sunk, the brackets 3' are in a horizontal position, the pivot points A have moved towards each other up to position A'. This movement of the guide cylinder 7 is limited to the outside by the inner wall 11 of the upper handle shell 1 and towards the middle by the vertical outer walls 12 of the middle base 13 of the lower handle shell 5

When the carrying handle is opened, the movement sequence described above takes place in the opposite direction, with the carrying bar being pulled from bottom to top. The tensile forces acting here, or their components, cause the guide cylinders 7 to move outwards to the inner wall 11 of the upper handle shell 1. The tensile forces that occur when the case or suitcase is carried have the same effect. Since in this opened position the pivot points A are slightly outside the vertical line leading through the pivot points B (tilt outwards), the two brackets 3 remain in place even when the suitcase or case is put down, thus preventing the carrying bar from sinking into the lowered position. Only by moving the carrying bar slightly back and forth in the longitudinal direction are the pivot points A moved towards the middle, the brackets tilt inwards and the carrying bar sinks into the lowered position.

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Dr.SMT ₁ 14.12.1993 Carrying handle

When carrying, the stop of the bracket 3 on the case or suitcase shell 8 and on the lower edge of the inner wall 11 of the upper handle shell together with the fingers of the carrying hand placed around the back of the handle 2, which limit the longitudinal displacement of the carrying bar, prevent the carrying bar from coming closer to the case or suitcase and thus prevent the carrying hand from becoming trapped.

Fig.3

shows a partially broken-off part of the lower handle shell 5 with guide rail 8 and central base 13 in a top view. The two brackets 3' are in the folded-in position so that the guide cylinders 7 are in front of the vertical outer walls 11 of the central base 13. In this position, the convex friction shafts 15 of the spring element 14 press against the free circular parts of the guide cylinders and thus ensure that the handle can only be pulled up from its recessed position with a slight effort.

shows a view of the narrow side of the carrying handle, with the part of the suitcase or case shell 6 broken away and cut. Also shown in section are the fastening parts of the carrying handle, namely the bearing element 16, the washer 17, the screw 18 and the plug pin 19.

The embodiment shown here is one with very little use of material. The bearing element 16 is therefore screwed directly to the trough bottom (part of 6) of the case shell using the screw 18. If the shell wall is thicker, the washer 17 can be omitted. Assembly effort is also saved by the fact that the plug pin, which movably connects the bearing element to the bracket, is held by the shell wall, making screwing or riveting unnecessary.

In a further embodiment according to the invention, the complete carrying handle can be pre-assembled as an assembly on a base plate and thus inserted into the bowl recess in a time-saving manner - or also as an attached, i.e. non-retractable carrying handle - and screwed on from the inside.

shows the elements of the carrying bar in an oblique top view, namely the upper handle shell 1, the lower handle shell S and the spring element 14, which is inserted into the groove 20, whereby its nose 21, introduced into the nose groove 22, causes the lateral locking so that the convex friction shafts 15 in the unfolded carrying handle can swing freely in order to rub the friction in the folded carrying handle.

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• · ft

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Dr.SMT, 14.12.1993 Carrying handle

Guide cylinder 7 is locked by spring pressure.

The flat inner roof 9 of the upper handle shell 1 and the middle rail surface 10 form ideal bonding surfaces for assembling the support beam by gluing.

shows the bracket 3, the plug pin 19 and the bearing element 18 with the horizontal hole 23 for receiving the plug pin 19 and the vertical hole 24, which contains the internal thread for screwing in the screw 18.

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DrSMT ₁ 14.12.1993 Carrying handle

List of references

A Upper pivot point of the bracket 3 with the handle unfolded

A' Upper pivot point of the bracket 3 when the handle is folded

B Lower pivot point of the bracket

1 Upper handle

1' Upper handle with handle folded

2 Gräffrücken of the lower handle

3 brackets

3' handle with handle folded

4 Case shell edge

5 Lower handle

6 Part of the case or suitcase shell

7 Guide cylinder

8 Guide rail

9 Inner roof of the upper handle

10 Middle rail surface

11 Inner wall of the upper handle

12 Vertical outer walls of the central plinth

13 Middle plinth

14 Spring element

15 Convex drive shafts

16 Bearing element

17 Washer

18 Screw

19 locking pins

20 Groove for the spring element

21 Nose of the spring element

22 Nose groove

23 Horizontal drilling

24 Vertical hole

Claims (1)

Dr.SMT, 14.12.1993 Carrying handle Expectations 1 . Collapsible and retractable carrying handle for suitcases and cases, characterized in that the support beam consists of an upper handle shell 1 and a lower handle shell 5 fitted into the upper handle shell 1, which is provided on both long sides with guide rails 8 which are limited towards the middle by a central base 13 and which is equipped with two spring elements 14 inserted in grooves 20 located behind the central base 13, Furthermore, the carrying beam is connected to the suitcase or case via the bearing element 16 with 2 brackets 3 at the upper end around the pivot points A when the carrying handle is opened and at the lower end around the pivot points B, such that the surface of the support beam, which is brought into the folded-in position by pressure from top to bottom, forms a continuous surface with the surface of the surrounding shell part of the case or suitcase, whereby the brackets 3 are practically vertical when the support frame is unfolded, so that the upper pivot points A are slightly outside the vertical line passing through B, so that the brackets 3 are tilted outwards and when the support beam is folded in and thus sunk, the brackets 3' lie horizontally under the upper handle shell 1 in such a way that the guide cylinders 7, which are mounted horizontally inwards on the legs of the brackets 3/3', lie just before the vertical outer walls on the guide rails 8, while folding in, the bracket 3 is guided by the brackets 3/3', the guide rails 8 and the inner roof 9 of the upper handle shell 1 after assuming a tilted position and the support beam is moved back and forth in the longitudinal direction and the pressure exerted on it from top to bottom, wherein the support beam is held in this position by the convex drive shafts of the spring elements rubbed against the free cylinder circular surfaces of the guide cylinders 7 in such a way that pulling the support beam upwards and thus opening the carrying handle is only possible with a certain amount of force. -8th- -8th- Dr.SMT, 14.12.1993 Carrying handle 2. Collapsible and retractable carrying handle according to claim 1, characterized in that the carrying bag's pendulum movement of the carrying handle is limited by the stop of the bracket 3 on the case or suitcase shell 6 and on the edge of the inner wall 11 of the upper handle shell 1 as well as by the fingers of the carrying hand placed around the back of the handle 2 of the lower handle shell 5. 3. Collapsible and retractable carrying handle according to claims 1 and 2, characterized in that In one embodiment, the two bearing elements 16 are mounted on a mounting plate which has the outline of the upper handle shell 4. Collapsible and retractable carrying handle according to claims 1, 2 and 3, characterized in that In one embodiment, the two handle shells 1 and 5 are glued to the inner roof 9 of the upper handle shell 1 and the middle rail surface 10 of the handle shell 5 against each other to form the support beam. 5. Collapsible and retractable carrying handle according to claims 1, 2, 3 and 4, characterized in that in one embodiment as a non-retractable carrying handle placed on the case or suitcase on the mounting plate according to claim 3. on both long sides of which stop walls are mounted corresponding to the part of the case or suitcase shell 6 and by means of these the typical pendulum movement of the carrying handle is restricted. 8. Collapsible and retractable carrying handle according to claims 1, 2, 3, 4 and 5, characterized in that -9- Dr.SMT, 14.12.1993 Carrying handle the carrying handle is mounted on the edge of a gas or case shell, as shown in Rq. 1 , the recessed recess surrounding the base of the carrying handle when the gas or case is open therefore only has recess walls on one broad side and on the two long sides, but not on the side facing the case or case shell opening.