DE3147293A1 - Suction adhesion device - Google Patents

Abstract

The invention is based on the object of creating cup-shaped suction adhesion devices which maintain a constant suction force, and hence very good adhesion, after being applied to surfaces through which air cannot pass and which are smooth or not smooth, for example to the ribbed and curved dashboard of a motor vehicle or to damaged, rough, scratched points provided with scars. According to the invention, the suction adhesion device according to Fig. 1 is composed principally of a plurality of individually sprung spring laminate sheets which are assembled centrally with the retaining core to form a spring rim. The cup-shaped spring rim has a very soft, elastically deformable sealing material, through which air cannot pass, all the way round - firmly connected to one another - on the contact surface with a plurality of sealing ribs which, in the fitted state, penetrate permanently into severely damaged or scratched surfaces, because of the suction effect, and thus provide sealing. Since the suction adhesion device can be fitted perfectly well to both smooth and non-smooth surfaces, and can be removed again at any time and can be fitted to another surface again as required, without the suction effect deteriorating, the field of application is considerably extended and a large number of additional fields of use are thus available for the first time. <IMAGE>

Description

Adhesive suction device

Description The invention is based on a suction and holding device that specified in the preamble of claim 1 and by patent specification 2723616 known species.

In known such holding devices are used as suction elements Suction cups, i.e. cup-shaped. elastically deformable parts are used. These suction elements with attached very soft sealing ring are with their concave contact surface on a smooth or non-smooth, e.g. damaged or ribbed surface is pressed on, whereby the air is displaced from the cavity between the surface and the base and as a result of the tendency to return of the suction element made of elastic material in its original position, then a negative pressure is generated.

However, these known suction cups or suction holding devices have the disadvantage that they hold the negative pressure for a short time, but with increasing Fatigue of the actual carrier material - mostly made of plastic, rubber or there is something similar - the negative pressure decreases and finally the suction element of the pad falls off.

Investigations prove that new suction cups or suction holding devices have a concave shape on their contact surface.

This does not apply to suction elements that have been used for a long time you then have an almost flat or flat contact surface that practically does not tend to return and thus an immediate re-attachment to a base is almost impossible power.

The cause of this phenomenon lies in the quality of the suction cup material, which in turn is essentially dependent on the operating temperature.

These suction elements can only be used on flat surfaces or only very lightly be attached to curved supports.

Often, however, there is now a need to hold a suction device securely in place to be attached to such Unterlageil that with the already known suction elements are to be regarded as critical or not possible. These are mainly documents with serious damage, e.g. scratches, are uneven or in those places that are ribbed, grained, slightly or strongly arched, curvatures or spherical Have shapes.

The object of the invention is to provide suction devices of the in the preamble of claim 1 specified type to improve that in the application on a not completely flat surface - for example ribbed or curved dashboard of a motor vehicle, on damaged rough or scratched, pitted tiles, tiles, glass, laminated panels with regular or irregular structure - a constant suction power and thus a very good adhesion with a very brittle area of application is achieved.

To solve this problem are in the invention in the identification part of claim 1 specified design features provided, with still in the subclaims 2 to 8 for the task solution advantageous and beneficial further training claimed which in some cases show overlapping characteristics with the state of the art.

The invention; based on the prior art according to the patent specification 2723616, about the task specified for this starting point with the in the identification part of claim 1 specified solvents to develop, so the corresponding Developing a design principle for the invention was not easy for the person skilled in the art further and without inventive considerations possible. because for this development in the case of the state of the art, no such technical information can be seen that would have carried out this development without further ado and without inventive considerations permit.

Although it is known in the art, sealing rings as a separate part or suction elements according to patent specification 2723616 with the known materials established, but the other technical conditions are with the respective State of the art stored 818 quite differently in the case of the invention.

The spring wreath with the very good resilience and with the very soft, elastically deformable and usually all-round sealing material or with a very soft sealing ring - preferably made of plastic, rubber, etc. - Equipped adhesive suction device also ensure uneven surfaces to a certain extent Documents, e.g. uneven, damaged, grained, scratched, ribbed, curved, corrugated surface etc., after pressing, for a perfect seal the suction device and the pad, so that a penetration of Guft in the Void is reliably avoided.

To further improve the sealing effect, it can be beneficial if the sealing ring at a radial distance from one another one or more circumferential, over the contact surface has protruding sealing ribs, because then the seal through Penetration of the sealing ribs into even more damaged documents takes place.

The actual functional part, for the effective and even pressure load on the very soft sealing material or on the sealing ring, forms the spring ring, which can be attached to a receiving core near the center.

The spring ring made of spring steel or a corresponding resilient plastic material the spring lamellae, preferably evenly divided into almost any Number attached in a star shape and each one independently, freely and resiliently moves, always has the property that the underneath the spring wreath, Firmly connected or loosely attached very soft sealing material after pressing is pressed against a surface. Thus, through the individual, solo working spring lamellas irregularities in the base such as curvatures, roundings, Bulges, scars, Depressions, raised areas, etc. are evened out and on those otherwise critical documents, a secure durability of the suction device guaranteed.

Another enormous advantage reads in the property of the spring slats even, especially if they are made of high quality spring material or the like are.

These spring slats work in principle - if they are not overstretched - back to the original position, so that therefore the suction device Can be attached to a base for any length of time and securely and if necessary can immediately be reattached to any other surface.

The combination, ederkrar: z firmly connected or loosely attached with the very soft sealing material on the contact surface are the actual characteristics the invention.

To test a bond between the spring ring and the very soft one To get sealing material it is necessary to make the spring ring made of spring steel or something similar pretreatment, which is usually not necessary with the appropriate plastic material.

Of course, the spring ring can consist of one part that is connected to itself in the middle area and the spring lamellae towards the edge area attached freely movable by a parting line.

Or the spring wreath consists of the receiving core, peder lamellas and the pressure ring, which can be assembled, compressed or the like, for example.

Furthermore there is the possibility to create a suction device, e.g. with an injection-molded part made of appropriate plastic material, the consists of one part, i.e. the receiving core in the middle and conical to the circumference running out has several and freely resilient spring slats and also with a very soft »ichttnmaterial most appropriate all around, read connected with the molded part is.

Another embodiment of the adhesive suction device is that one around the resilient, perforated spring lamellae e.g.

made of spring steel, plastic or the like, a previously common, elastic one Deformable suction cup material, preferably about 50 Shore A, injected all around and a circumferential recess on the contact surface in the outer edge area of the suction element attaches.

The over the contact surface of the suction device into the recess inserted, protruding, firmly connected, very soft sealing ring with an or several »ichtripen and preferably less than 20 Shore A, forms the actual here Sealing element to prevent the air supply from outside to inside. Press here too the spring lamellas with the same pressure, the sealing ring, after pressing, evenly downward.

It is certainly also possible to use the very soft suction element with a to manufacture centrally attached connecting pins from one part. At their contact surface facing the back is a support part with attached spring slats before pressing e.g.

made of spring steel or correspondingly resilient plastic material by means of Connecting pin connected to the suction element. The spring slats sit, however loosely on the suction element. This creates the very soft suction element after pressing pressed against the base.

In principle, the sealing ring or the sealing ribs can be any Have shape. Particularly good results can be achieved if the Serving sealing Part of the sealing ring or the sealing ribs in the Cross-section approximately triangular and with its sharp edge of the base can be put on sina. The sharp edge is particularly easy to get into any unevenness of the document.

The features of the invention and its technical advantages emerge also from the following description of exemplary embodiments in conjunction with the claims and the drawing. It shows: FIG. 1 a first embodiment the new adhesive suction device in section A - B; FIG. 2 shows a partial plan view of the suction device; FIG. 3 shows a partial cross section through a second embodiment of an adhesive suction device before pressing; FIG. 4 shows a partial cross section through a third embodiment an adhesive suction device after pressing; Figure 5 is a partial cross-section through a fourth embodiment of an adhesive suction device before pressing; Figure 6 in the corresponding partial cross-section the device of Figure 5 after pressing; FIG. 7 shows a section through a fifth embodiment before pressing; figure 8 shows a partial cross-section through a sixth embodiment before pressing; figure 9 shows a partial cross section through a seventh embodiment after pressing; at the embodiments of suction devices shown in the drawing it was assumed that their suction elements or contact surfaces essentially are circular. Of course, however, the design of the suction elements also be a different one, e.g. oval, angular, etc.

FIG. 1 shows the basic embodiment of an adhesive suction device according to the invention. In the middle area it comprises the receiving core 1, for example with a fastening thread 1.1 which is divided all around the circumference and with separating joints 12 provided spring lamellae 2 as well as the pressure ring 3, which is on the receiving core 1 E.g. is pressed on and the spring lamellas 2 hold together stabiS. The 80 shown Spring ring 4 now has resilient properties when pressed against the base 28 (Figures 3, 4, 5, 6, 7, 8, 9).

The spring lamellae 2 as well as the receiving core 1 and the pressure ring 3 are white pretreated because of the adhesive connection and with the very soft sealing material 5, e.g. by pouring in - preferably below 20 Shore A - provided with it all around the sealing material 5 with the spring lamellae 2, receiving core 1 and pressure ring 3 firmly connected and thus a suction effect of the adhesive suction device is after the pressing given with the contact surface 6 on the lower liquor 28.

On the contact surface 6 of the suction device is expediently to apply a thicker layer 5 'of the sealing material 5, since after pressing the suction device this layer 5 'deeper in damage, depressions or the like of the base 28 penetrates and thus an even better seal is achieved.

In the outermost edge area of the suction device, against the contact surface 6, a reinforcement 7 of the sealing material 5 is expediently made, the a possible pulling out of the individual spring lamellae 2 is prevented.

As can be seen from the drawing, has the suction device on their underside one or more circumferential sealing ribs 8, 8 ', which are intended are to the base 28, not shown in Figures 1 and 2 - in Figures 3, 4, 5, 7, 8, 9 -to be pushed.

At this suction device approximately in the middle 9 is the to be attached Part. E.g. hook eyes or the like attached to the ring surface 3 of the pressure ring 3 rests.

It can also be seen from FIG. 1 that the sealing ribs 8, 8 ' are approximately triangular in cross-section, the arrangement being such that that the sharp edges 10 when using the suction device on the base 28 is pressed. It is understandable that the sealing ribs 8, 8 'with their sharp edges 10 when applying pressure in the direction of arrow 11 on the suction device Flawlessly also against a -relatively uneven surface 28 and a reliable one Sealing of the then under pressure space between the contact surface 6 ensure the suction device and the pad 28, which achieves that the suction device is also on a relatively uneven surface 28 long and reliable.

Figure 2 clearly shows the arrangement of the individual in plan view Spring lamellae 2, which can move freely and independently through a parting line 12. This has the enormous advantage that the spring lamellae 2 adhere to the, for example, wave-shaped, Adapt curved base 28 and with the sealing material 5 cast all around Represent a secure network as a whole.

FIG. 3 shows a second embodiment, starting approximately from the middle to the left a partial cross-section of the suction device, in which as a functional part the spring ring i5 or spring lamellas 16 with attached sheet metal passage 17 and «.B. Fastening thread or additionally pressed into the sheet metal passage Receiving core 18 can be seen.

A simple design of the suction device can be used for low holding forces are produced, inden the spring ring 15 with sheet metal passage 17, as e in Figure 3, but without the receiving core 18.

It is not shown in Figure 3 that the part to be fastened, e.g. hooks, Button or the like has attached a snap pin that passes through the sheet metal 17 pressed and connected to the suction device in the snapped-in state is.

The function of the spring slats 16 and the attachment of the very soft Sealing material 19 is as described in FIGS. 1 and 21.

Figure 4 shows a partial cross section of the third embodiment starting approximately from the middle to the right, after pressing, is shown.

In the direction of the contact surface 20 is attached centrally below the spring ring 21 a receiving core 22 made of, for example, steel, e.g.

by welding, connected, which is suitable for heavier loads is. An even greater load on the suction device can according to the invention be made by placing a part 29, e.g. hook or the like

is attached, the below a support plate 23 with one at the edge has overlying circumferential knobbed edge 24, and thus under after pressing Preload an additional pressure in the direction of the arrow 25 on the sealing material 26 @ or the sealing ribs 27, 27 'and the base 28 exerts.

In this state, the extremely soft sealing material 26 'or Sealing ribs 2j, 27 'in the edge area even deeper in uneven stitches of the base 28 pressed and achieved an even better seal.

Furthermore, the stability of the suction device is attached Part 29, e.g. hook, holder, increased as a whole when exercised.

The support plate 23 has a circumferential hbdeckrand 30 of the circumference causes a stiffening.

FIG. 5 shows a section of the embodiment on the left, starting from the center before the suction device is pressed against a pad 28, the spring @ wreath from several but individually resilient spring lamellae 33 and in the middle the one cast thereon Aufnanmekern 34 consists and preferably of a corresponding qualitative spray material will be produced.

The spring lamellae 33 logically show from the beginning recess 35 a thicker wall that tapers conically around the edge area and with the thinnest wall 36 'ends.

The spring ring 32 is expediently made with the usual sealing material 37, as described in Figures 1, 2 and 49 z.3.

encapsulated and has a thicker layer 36 on the contact surface 40.

On the suction device is oten, for example. a support plate 38 attached, which has a circumferential knobbed rim 39 on the outside and does not open before it is pressed on the sealing material 41 rests.

FIG. 6 shows a section of the same starting from the center on the right Embodiment, as shown in Figure 5, after pressing the suction device to a base 28. It can be seen that the circumferential knobbed edge 39 of the support plate 38 rests on the sealing material 41 under pretension and thus always the one on the Contact surface 40 existing sealing material 36 or sealing ribs 42, 42 'firmly on the Pad 28 presses.

Another advantage of the support plate 98 is that it has a diameter limited to rest on the sealing material 41 of the suction device. In this The Kaftsaugeinrichtung can quickly through the state at any time after pressing Lifting one or more peder lamellas 33 from the base 28 removed and otherwise fastened again by pressing again without the support plate 38 must be detached from the suction device.

FIG. 7 shows, in section, an embodiment of the suction device Before pressing, the function is similar to that of Figures 1, 3, 4 and 5 to be treated is.

For £ aSt a spring ring 45 with freely working spring lamellas 46, which are provided with several holes 52 at intervals and in the middle area have a receiving core 47, also perforated, or can be without a receiving core 47. This Pederkranz 45 is made as a whole with an elastically deformable e.g. Suction cup material 48 - preferably approx. 50 Shore A - e.g. encapsulated, the one with the spring slats 46 or receiving core 47 represents a composite. Because of the better resilient properties of the spring lamellae 46 are expediently the parting lines 12, as in FIG. 1 1 and 2, the spring lamellae 46 are held larger with respect to one another.

Is on the contact surface 49 'in the outer edge area of the suction element A corresponding circumferential recess 50 is provided, in which a very soft sealing ring 51 with sealing ribs 53, 53 '- preferably less than 20 Shore A - e.g. by gluing is firmly embedded. Reference is made here to that in patent specification 2723u16 intended type. Of course, the very soft sealing ring 51 in the execution as a full plate part - not shown in Figure 7 - on the contact surface 49 'of the Suction element are attached, in which case the circumferential recess 50 not applicable.

FIG. 8 shows a partial cross section of the sixth embodiment the pressing. The suction device has the contact surface 55 on the base -28 a very soft plate part 56 with preferably less than 20 Shore A, with centrally connected hollow pin 57. A connecting pin goes through the hollow pin 57 58, which in turn is the plate part 56 with the spring ring 59 through Pressing firmly connects. The spring ring 59 with its spring lamellae 60 is present the pressing on the plate part 56 loosely and after pressing the press Federlainellen 60 this. Plate part 56 with the plant surface 55 on the base 28 at. Of course, the spring ring 59 with its spring lamellae 60 can e.g. by gluing with the surface 61 of the plate part opposite to the contact surface 55 56 are connected. The lining layer 62 is used for stability and to guide the Spring slats6OO.

FIG. 9 shows a partial cross section through a seventh embodiment after pressing.

The receiving core 65 is perforated and with the elastically deformable Suction element 66, e.g. conventional suction cup material, preferably with approx. 50 Shore A, injected firmly all around.

The sealing ring 67 is, as in Figure 7, in the circumferential recess 68 of the suction element 66 firmly embedded.

A spring ring lies on the support surface 70 of the suction element a 66 71 with attached spring lamellae 72, e.g. made of Federatahl or the like Fastening part 79 and the receiving core 65 connected iBt and after pressing the suction device a pressure of the sealing ring 67 or the sealing ribs 74, 74 'on the pad 28.

Claims (9)

Patent (protection) claims 1) adhesive suction device with a cup-shaped, with its contact surface on a rough or smooth surface by generating a Vacuum tightly suckable, elastically deformable suction element characterized in that that the suction device preferably has a spring ring (4, 15, 21, 32, 45, 59, 71) with evenly wide circumference divided and with separating joints (12) or (Fig. 1, 2, 3, 4, 5, 6, 7, 8, 9) individual resilient spring slats (2, 16, 33, 46, 60, 72) made of appropriate spring material, e.g. spring steel or plastic spring material, which is attached to or with a receiving core (1, 18, 22, 47, 65) near the center self-connected with a very soft, elastically deformable sealing material (5, 26, 37) embedded in the ring space or only fixed to the underside of the peder lamellae are connected to each other or the spring slats on dcu very soft, elastic deformable sealing ring (51, 67) or plate part (56) rest loosely. 2) suction device according to claim 1, characterized in that the individual resilient spring lamellae with a receiving core (1) and pressure ring (3) are joined together to form a spring ring (4), or that the spring ring which is joined together (15, 21, 32, 45, 59, 71) and the attached resilient spring slats (16, 33, 46, 60, 72) with or without a receiving core (18, 22, 47, 65), the actual spring element form. 3) suction device according to claim 1 and 2, characterized in that that either all around with the spring ring (4, 15, 2X, 32, 45) or only on the Firmly connected, very soft sealing material (5 ', 19, 26', 36), e.g. cast around the underside will or the spring ring (59) rests loosely on the plate part (56) or Sealing ring (51, 67), made of an air-impermeable material with a Hardness of less than 70 Shore A, preferably less than 2G Shore A, exists. 4) suction device according to claim 1 and 2 characterized in that that the spring ring (15) consists of one part and a sheet metal passage in the middle area (17) or a deformation (31) with or without an inserted receiving core (18, 22, 47, 65). 5) suction device according to claim 1, characterized in that the spring ring (32, 59) with the spring lamellae (33, 60) consists of an injection molded part and the very soft sealing material (37) is poured all around, for example, as well as the Has a support surface (20, 40) opposite a support plate (23, 38). 6) suction device according to claim 1 and 2, characterized in that that the spring lamellae (46) act individually resiliently, at intervals with several holes (52) are connected in the middle area with or without a receiving core (47), as a whole with an elastically deformable e.g. conventional suction cup material (48) preferably with about 50 Shore h e.g. is encapsulated and on the contact surface (49 ') in the outer edge area of the suction element has a circumferential recess (50) into which a separate slightly protruding very soft sealing ring (51) with one or more sealing ribs (532 53 ') is inserted and t the suction element is firmly connected. 7) suction device according to claim 1, characterized in that de between the spring lamellae (in Fig. 1, 2, 3, 4, 5, 6, 7, 8, 9) parting lines (12) are present are. 8) suction device according to claim 1, characterized in that a very soft plate part (56) on the contact surface (55) or on the contact surface (69) a very soft sealing ring (67), firmly connected in the suction element (66), is present and on the opposite side a spring ring (599 71) on the suction element rests loosely. 9) suction device according to claim 5, characterized in that the support plate (23, 38) has a circumferential knobbed edge (24, 39).