AT521389A1 - Telescopic collapsible drinking vessel as well as hand and transport protection for the drinking vessel - Google Patents

Abstract

Drinking vessel (1) telescopically collapsible with a bottom surface (4) and at least two telescopically telescoping side wall elements (2), between which a sealing element (10) is inserted into a groove (9) of a side wall element (2) for sealing, the sealing element (10 ) a profiled seal (13), in particular a profiled ring seal, is provided with at least one longitudinal recess (16), the profiled seal (13) between a bottom (14) of the groove (9) and a further side wall element (2) a compression relative to the height of the profiled seal (13) of a minimum of 6% and a maximum of 10% is clamped.

Description

Drinking vessel (1) telescopically collapsible with a bottom surface (4) and at least two telescopically telescoping side wall elements (2), between which a sealing element (10) is inserted into a groove (9) of a side wall element (2) for sealing, the sealing element (10 ) a profiled seal (13), in particular a profiled ring seal, is provided with at least one longitudinal recess (16), the profiled seal (13) between a bottom (14) of the groove (9) and a further side wall element (2) a compression relative to the height of the profiled seal (13) of a minimum of 6% and a maximum of 10% is clamped.

(Fig. 1) / 45

The invention relates to a telescopically collapsible

Drinking vessel, in particular for hot drinks, with a bottom surface and at least two telescopically telescopic

Side wall elements, between which a sealing element is introduced into a groove of a side wall element for sealing.

Furthermore, the invention relates to a set consisting of a telescopically collapsible drinking vessel and a flexible hand and transport protection with an outer shell.

It is estimated that between two and three billion single-use cups are thrown away every year in Germany alone, which is not only a major burden for municipal waste disposal, but also for the environment. The problems associated with disposable cups will all change in the near future

Even more likely to tighten as the

Enjoyment of hot and cold drinks on the way to work or school is becoming increasingly popular. However, since environmental awareness is also increasing among the population, reusable cups are increasingly being used, which can be refilled at home, in a shop or in a coffee house and then taken away. Since the drinks are mostly consumed on the go, cups are particularly needed, which can be easily stowed in a bag on the one hand and on the other hand offer a high degree of reliability in terms of tightness and require little effort when pushed together.

Conventional, non-collapsible cups only partially meet these requirements, since they are usually tight and stable, but because of their size they can only be transported with great difficulty. Telescopic telescopic drinking vessels of the type mentioned at the outset, on the other hand, would be particularly suitable for transport due to their compactness, but have so far had the disadvantage that they easily leak or - if they contain O-ring seals - only / 45 with increased effort the exploded, ie ready to drink, position can be brought. It can also happen that drinking vessels of this type are accidentally pushed together while drinking and spill the contents as a result.

It would therefore be desirable to create a drinking vessel - especially a coffee mug - that would take advantage of both types of

Drinking vessels combined without the disadvantages. From the state of the

Technology for this purpose is already known telescopically collapsible drinking vessels in which attempts have been made to eliminate or alleviate individual disadvantages.

For example, German utility model G 90 14 292.6 discloses a telescopically collapsible drinking vessel in which O-ring seals are used to seal the individual segments. However, it has been found that the O-ring seals are not particularly tight due to the system-free use and twist again and again during pulling apart, so that the tightness of the drinking cup is no longer guaranteed. To prevent this and increase the tightness, the O-ring seals would have to be clamped very firmly between the segments. However, this would in turn lead to an increase in the friction between the segments caused by the O-ring seals and, subsequently, a very high force to pull the drinking vessel apart, which would be a problem especially for people with low forearm strength.

Furthermore, a drinking cup is known from US 2014/0332528 A1, the side wall elements of which have a type of guide thread. The side wall elements can also be sealed to each other by O-ring seals. Similar to the G 90 14 292.6, the ease of pulling apart is lost when using O-ring seals. In addition, as already mentioned above, despite the O-ring seals, the tightness of the drinking cup is not fully guaranteed.

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In addition, DE 68 A discloses a telescopically extendable travel and field cup, which has a case connected to the cup at its upper end. The connection of the cup with the case makes drinking more difficult. In addition, no seals are provided between the individual side wall elements, so that leakage of liquid after a while is not unlikely.

From US 2010/0308042 A1, an extendable drinking vessel is also known, which has sealing elements with projections between the side wall elements.

US 2013/0264340 A1 discloses a further extendable drinking vessel in which guide grooves and guide pins are arranged on the inner sides of the side wall elements.

The state of the art also includes manual and

Transport protection devices for drinking vessels are known. Examples of this can be found in FR 2 670 187 A1, EP 3 028 987 A1 and DE 20

2007 000 854U1.

All pull-out drinking vessels known from the prior art also have in common that their side wall elements are very light

Transfer heat to the outside and therefore cannot be touched with the bare hand immediately after filling with hot drinks. This is due to the fact that the side wall elements have to be made of relatively light and thin material in order to avoid strong step transitions between the individual side wall elements and not to unnecessarily reduce the volume.

It is an object of the present invention to at least partially alleviate or eliminate the disadvantages of the prior art. In particular, it is an object of the invention to solve the O-ring problem described above and thereby create a collapsible drinking vessel of the type mentioned at the beginning, which has an increased tightness between the side wall elements compared to the prior art and at the same time is more easily pulled apart or can be pushed together.

This object is achieved in that a profiled seal, in particular a profiled ring seal, with at least one longitudinal recess is provided as a sealing element in the drinking vessel of the type mentioned at the beginning.

With the help of the profiled seal, the lateral frictional forces acting on the side wall elements can advantageously be reduced during the pulling apart or pushing together and at the same time the sealing effect of the drinking vessel can be increased.

This is due on the one hand to the low line loads of profiled seals and on the other hand to the increased stability against twisting and rolling of such seals. The increased sealing effect compared to the prior art is also achieved in that at least two contact points between the profiled seals and the side wall elements, namely on both sides of the recess, are available. As a result, there is a double failure protection if a profiled seal should nevertheless move or buckle. Since in the invention the sealing element is formed by a profiled, these terms are equivalent.

A profiled seal in the sense of the invention is one

Gasket, which, similar to a profile seal for window frames, when in contact with a surface using the long side

Recess includes at least one cavity and thus forms several contact points with the surface. An O-ring seal, on the other hand, forms only a single contact point and also has higher line loads.

If the profiled seal is a self-contained element, such as a ring seal, means “along the length of the inner or outer circumference. If, on the other hand, / 45 it is a strip-like, profiled seal, means “on the longitudinal side parallel to the longitudinal axis.

The longitudinal recess preferably extends over the entire length or the entire circumference of the seal, in particular over the entire outer circumference. Several longitudinal recesses can also be provided. Examples of a profiled seal include X-ring seal or QuadRing seal, V-ring seal or S-ring seal, the cross-sectional shape of which corresponds to the shape of the letter of its name.

For the purposes of this disclosure, directions such as "above," below, "inside or" outside refer to the ready-to-drink, exploded position of the drinking vessel. "At the bottom is the floor area and" inside the drinking chamber delimited by the side wall elements.

The drinking vessel according to the invention, which is intended in particular for hot drinks, is by hand

Pull apart from the collapsed position to the extended, i.e. Ready to drink, position and vice versa convertible. For this purpose, the drinking vessel has at least two side wall elements which can be telescopically pushed into one another, which are in particular made of metal or plastic and are preferably completely insertable into one another. For this purpose, the side wall elements each have a different diameter. The side wall elements preferably have a round cross section, but other shapes, such as square or generally polygonal, are also possible. The innermost side wall element, that is the one with the smallest diameter, can also form the bottom surface of the drinking vessel. The outermost side wall element, i.e. the one with the largest

Diameter, can be a drinking mouth or a counterpart for one

Form the lid or a sealing cap. Incidentally, “side wall elements which can be pushed into one another are also to be understood as side wall elements which are rotated relative to one another during the pushing together.

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The groove in which the profiled seal is received can be located on an inside or outside of a side wall element. However, the groove is preferably provided on the outside of the side wall element. In the place of the groove, this can

Sidewall element be thickened accordingly. The groove is preferably designed in such a way that it is delimited by three sides of the respective side wall element, namely a bottom and two opposite side walls. As a result, the sealing element inserted into the groove is against displacement or

Secured slipping. Therefore, it is convenient if the width of the

Groove corresponds approximately to the width of the sealing element. However, there must be little play to the side walls in order to allow compression and expansion of the sealing element.

The height of the side walls of the groove is in any case less than the height of the sealing element in the groove, so that

Sealing element come into contact with another side wall element and between the bottom of the groove and the other

Sidewall element can be clamped or pressed. The further side wall element is the side wall element with the next larger or smaller diameter. For an optimal sealing effect, the sealing element between the bottom of the groove and the further side wall element with a compression based on the height of the sealing element, deviating from the prior art, of a minimum of 3% and a maximum of 15%, particularly preferably a minimum of 6% and a maximum of 10% , Clamped, the height of the sealing element is measured perpendicular to the bottom of the groove and is therefore parallel to the compression.

When the drinking vessel is pulled apart or pushed together, the sealing element slides along the further side wall element and is held in position by the groove.

In a preferred embodiment it is provided that the profiled seal is an X-ring seal, a V-ring seal, a Δ-ring seal, a Y-ring seal or an S-ring seal, the profiled seal preferably being coated with polytetrafluoroethylene or a lacquer. This / 45

In experiments, types of profiled seals have proven to be particularly advantageous with regard to a reduced line load and the associated reduced frictional forces

Pulled apart or pushed together. To the

To reduce frictional forces even further, it is preferably provided that the profiled seal is coated with polytetrafluoroethylene (Teflon) or a lacquer.

Because the coating, i.e. the paint or that

Polytetrafluoroethylene, which frequently comes into contact with food, it is advantageous if it is food-compatible, in particular food-compatible according to the European regulation EG 1935/2004.

Since the sealing element is secured by the groove and therefore slides along the side wall element with the next larger or next smaller side wall element, it is advantageous if the at least one recess of the sealing element faces away from a bottom of the groove. Alternatively, the at least one

Recess facing a side wall. Further longitudinal recesses can also be provided, which can face the bottom or the side walls of the groove.

In order to further improve the sliding properties of the side wall elements with respect to one another and in particular to reduce the static friction after long periods of non-use, it can be advantageous if the at least one recess is filled with a lubricious, food-compatible lubricant, in particular a lubricating paste. If several recesses of the profiled seal face away from the bottom of the groove, these can also be filled with the lubricant. The lubricant is in particular a viscous one

Lubricating paste, for example petroleum jelly, an ointment or coconut oil to prevent it from quickly being used up or draining away. By using lubricating paste, it could also be shown that the ease of pulling apart the drinking vessel can be improved for many hundreds of cycles. The lubricant can include a silicone base or a / 45

Have polytetrafluoroethylene base. The lubricant is advantageously tasteless. These lubricants are advantageously approved for low contact with food and are colloquially called Hl approved if they meet FDA rule 21 CFR 178.3570 class NSF Hl.

In a particularly preferred embodiment, in order to increase the sealing effect in the case of manufacturing-related dimensional deviations of the side wall elements, it is provided that in a recess, for example the longitudinal recesses, of the profiled seal, in particular a V-ring seal or Y-ring seal, a ring made of a memory alloy for additional tensioning of the profiled seal is arranged. The ring made of a memory alloy is arranged in a recess, for example the longitudinal recess, of the profiled seal, in particular a V-ring seal or Y-ring seal, for subsequent or additional clamping of the profiled seal. This ring is intended to additionally tension the profiled seal outwards against the further side wall element. For this purpose, the profiled seal is conventionally inserted into the groove during assembly. The memory alloy ring is then inserted into the recess in the seal. In order to facilitate this, the ring is open at one point, so that two ends can be pushed or pulled apart in such a way that the original circumference of the ring can be reduced or enlarged. The recess is preferably lateral, i.e. towards the side walls of the groove, provided on the profiled seal, so that the ring towards the bottom and towards the open end of the groove is covered by the seal. After the final assembly, the drinking vessel and thus the ring is heated, whereupon it takes on its original shape, in particular its original size, due to the memory effect. The profiled seal is pressed outwards and thereby stretched against the other side wall element. The commercially available standard alloy NiTi is particularly suitable as a memory alloy. The ring out

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Memory alloy has particular advantages when using Y-ring seals or V-ring seals because larger diameter deviations can be cushioned to the outside.

In order to further reduce the friction between the profiled seal and the side wall element and at the same time to increase the tightness, a spring element can be arranged between the profiled seal and a bottom of the groove. With this

Spring element is an at least partially flexible and resilient element, the width of which is at least as large as the width of the profiled seal, so that the profiled seal is always in contact with the spring element and not directly with the bottom of the groove. The tongue also secures the spring element against unintentional slipping. However, there is also play between the spring element and the side walls of the groove, so that compression or expansion of the spring element is possible. By the invention

Spring element can cause component defects of the side wall elements in terms of size or shape (out-of-round and not exact

Alignments) can be compensated.

In a preferred embodiment, a circumferential sealing ring inserted into the groove, in particular a sealing ring made of an elastic material such as rubber or preferably cellular rubber, is provided as the spring element.

So that component errors that would cause a leak can be compensated even better, it has proven to be particularly advantageous if the spring element has a smaller one

Has spring constant as the sealing element. With

The spring constant is the proportionality constant of the

Hook's law meant an idealized linear

Establishes relationship between the elongation or compression of a spring and the resulting spring force. The spring is formed by the spring element. Therefore, if the profiled seal is pressed against the spring element by clamping the side wall elements, the profiled seal transmits the force / 45 the spring element so that it is compressed more than the profiled seal due to the lower spring constant. This allows component errors to be compensated for without the shape of the profiled seal being significantly changed. In other words, component defects are primarily compensated for by springing back the spring element and not by the profiled seal.

In order to be able to make full use of the surface of the side wall elements as far as possible, it is advantageous if the groove runs along an upper outer edge area or along a lower inner area

Edge area of the side wall element runs. Through this

Measure, the volume available in the pulled-apart state of the drinking vessel can be maximized, since almost the entire height of the side wall elements can be used. If the groove along an upper outer edge region of the

Side wall elements runs, such a groove can be omitted for the side wall element with the largest diameter. The groove on the side wall elements is always aligned so that its open side faces the next larger side wall element, so that the profiled seal can come into contact with this side wall element. In contrast, if the groove runs along a lower inner edge region of the side wall elements, such a groove can be dispensed with in the case of the side wall element with the smallest diameter. The

In this case, the groove is always aligned so that it is open

Side facing the next smaller side wall element, so that the profiled seal in contact with it

Sidewall element can occur.

In order to avoid burns or scalds on the lips, it can be advantageous if at least two side wall elements, including in particular the side wall element which is the most distant from the bottom surface when the drinking vessel is pulled apart, are each made of different materials. The one furthest away from the bottom surface when the drinking vessel is pulled apart / 45

The side wall element is usually the one with the largest diameter. For example, this can be exploded

State of the drinking vessel from the bottom surface of the most distant side wall element made of plastic, for example

Polyoxymethylene (POM), glass, laboratory glass, porcelain or ceramics. The remaining side wall elements can be made from

Plastic or metal, preferably austenitic Cr-Ni steel with approximately 18-20% Cr and 8-10% Ni. It is also beneficial if the one furthest from the floor surface

Sidewall element is thicker than the other side wall elements, both to increase the rigidity and to further reduce the heat transfer.

In order to prevent the drinking vessel from being inadvertently pushed together, the side wall elements can be latched in an upper outer and / or a lower inner edge region, in particular a part of one

Form locking elements forming bayonet catch. Among other things, a side wall element on the inside can have one, preferably three, regularly distributed along the circumference,

Have guide pin (s) in the exploded

State engages in a locking element of the next smaller side wall element (s). However, this principle is also reversible, i.e. the guide pins can be arranged on the outside of the side wall element and in locking elements on the

Intervene on the inside of the next larger side wall element. The

Locking elements can be formed by locking grooves into which the

Snap the guide pins into the extended position.

The locking grooves can additionally have spring locking elements or the like, which additionally secure the guide pins. But it can also be provided that the locking grooves form an angled end position.

In a preferred embodiment of the drinking vessel according to the invention, at least one side wall element has one

Outside at least one guide groove, in particular three guide grooves, and at least one further side wall element in a lower inner edge region, at least one guide pin, in particular three guide pins, for sliding in the at least one guide groove. Of course, the principle can also be reversed, so that a side wall element on an inside has at least one guide groove, in particular three guide grooves, and another side wall element in an upper edge region of an outside has at least one guide pin, in particular three guide pins, for sliding in a corresponding guide groove. The further side wall element is the one with the next larger or the next smaller diameter. In a particularly preferred

Embodiment can be provided that the guide grooves merge into the locking elements, in particular in locking grooves. Thus, the guide pins slide along the respective guide grooves and finally engage in the locking elements in the pulled-apart position of the drinking vessel.

To prevent liquid from escaping during transport, this can be done in the exploded state of the

Drinking vessel from the bottom surface the most distant side wall element can be sealed by a lid.

That in the pulled-apart state of the drinking vessel from the

Bottom surface of the most distant side wall element is usually the one with the largest diameter. The lid can optionally have a closable drinking opening.

Since telescopically collapsible drinking vessels usually provide as large a drinking volume as possible without pronounced step transitions between the individual side wall elements and should nevertheless be able to be pushed together compactly, thin-walled side wall elements are preferably used, which, however, transmit the heat of the drinking liquid to the outside almost unhindered. In particular, the function as a coffee mug or tea drinking vessel is to avoid

Hand protection required for burns.

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This hand protection is also provided as a flexible hand and transport protection for the telescopically collapsible drinking vessel with an outer shell, which is characterized in that the hand and transport protection is heat-insulating and can be transferred between a storage position and a holding position, with the drinking vessel in the extended state in the stop position by two opposite, preferably exactly on a circumference of the

Drinking vessel adapted openings of the hand and transport protection can be inserted into the hand and transport protection, so that

Drinking vessel is at least partially surrounded by the outer shell and protrudes through both openings.

Due to the thermal insulation of the hand and

Transport protection Burns can be avoided if hot drinks are poured into the telescopically collapsible drinking vessel. Thermal insulation means in this

Context that, despite liquid temperatures of approx. 80 ° C inside the drinking vessel on the tangible side of the outer shell of the hand and transport protection, temperatures are a maximum of 40 C °. Preferably, “heat-insulating means that the specific thermal conductivity of the hand and transport protection has a value of less than 0.06 W / m.K.

It is envisaged that the hand and transport protection on its own also form a separate unit and of that

Drinking vessel completely removable, i.e. is separable. It is also provided that the hand and transport protection between one

Storage position and a holding position is transferable. This transfer can be done, for example, by folding, squeezing or folding the hand and transport protection, which due to the flexibility, i.e. Flexibility and / or foldability, the material is possible. The hand and transport protection is preferably made of lined leather or

Fabric, especially made of lined plastic textiles. In the stop position, the drinking vessel is in the pulled-apart state through two adapted openings in the / 45

Hand and transport protection can be inserted into the hand and transport protection, the openings being arranged opposite one another and the drinking vessel protruding through both openings. "Adapted" means that the openings are adapted to the circumference and preferably also the cross section of the drinking vessel. In particular, the entire outer shell is adapted to the drinking vessel and essentially corresponds in shape to that at least in sections

Outside of the drinking vessel in the extended state, so that the outer shell in the holding position on the outside of the

Drinking vessel is essentially free of wrinkles and curvature and without enclosed cavities. Since most drinking vessels that can be telescopically collapsed have a conical shape, the openings can have two different circumferences or

Cross sections to be adjusted. In other words, the openings each have a different size. Accordingly, the hand and transport protection also has a preferred direction in which the drinking vessel in the hand and

Transport protection can be inserted in the stop position. In the storage position, the hand and transport protection encloses a smaller volume than in the holding position and is therefore compactly stowable.

In a preferred embodiment it is provided that the openings can be closed, in particular can be closed by a zipper, push buttons or magnets. Alternatively, a Velcro fastener or a lacing system can also be provided.

To reduce the heat transfer and the feel of the hand and

To increase transport protection, it is advantageous if the hand and transport protection is lined with cotton on the inside of the outer shell. Foam feeding is also possible.

Also a filling with foamed or granulated insulation and

Isolating substances are possible.

So that the hand and transport protection can be better adapted to telescopically collapsible drinking vessels, which typically have a conical shape at least in sections, so that the drinking vessel does not accidentally slip out of the hand and transport protection, the outer shell can conically converge from one opening to the other.

In a particularly preferred embodiment it is provided that in the storage position of the flexible hand and

Transport protection the drinking vessel can be fully inserted into the hand and transport protection when pushed together.

As a result, the drinking vessel is also protected in the pushed-together position. In a particularly preferred embodiment, the size of the hand and transport protection in the storage position is adapted to the size of the drinking vessel in the pushed-together position such that when it is inserted in its entirety, it is secured and cannot slide around. The size of the outer shell of the holding and transport protection in the storage position therefore corresponds essentially to the size of the drinking vessel when pushed together.

The invention further relates to a set consisting of a telescopically collapsible drinking vessel and a flexible

Hand and transport protection with an outer cover, characterized in that the hand and transport protection is heat-insulating and can be transferred between a storage position and a holding position, the drinking vessel in the extended position in the holding position through two opposite openings of the drinking vessel which are adapted to a circumference of the drinking vessel Hand and transport protection in the hand and

Transport protection can be introduced so that the drinking vessel is at least partially surrounded by the outer shell and by both

Openings protrudes.

In a preferred embodiment it is provided that in the storage position of the hand and transport protection, the drinking vessel can be fully inserted into the hand and transport protection in the contracted state, the openings being closable by a zipper, push buttons or magnets / 45. Alternatively, a Velcro fastener or a lacing system can also be provided.

Advantageously, the shape of the hand and transport protection in the holding position - that is, in the function as hand protection - can be completely adapted to the shape of the outside of the drinking vessel in the pulled-apart state, so that the drinking vessel is prevented from falling out.

In particular, the following preferred embodiments of the drinking vessel, the hand and transport protection and the set are provided:

1. Telescopically collapsible drinking vessel with one

Bottom surface and at least two telescopically telescopic side wall elements, between which a sealing element is inserted into a groove of a side wall element for sealing, a profiled seal, in particular a profiled ring seal, with at least one longitudinal recess being provided as the sealing element.

2. Telescopically collapsible drinking vessel after

Embodiment 1, wherein the profiled seal is an X-ring seal, a V-ring seal, a Y-ring seal, a Δ-ring seal or an S-ring seal, the profiled

Seal is preferably coated with polytetrafluoroethylene or a lacquer.

3. Drinking vessel that can be pushed together telescopically

Embodiment 1 or 2, wherein the at least one recess of the profiled seal faces away from a bottom of the groove.

4. Telescopically collapsible drinking vessel according to one of the

Embodiments 1 to 3, wherein the at least one recess is filled with a lubricious, food-compatible lubricant, in particular a lubricating paste.

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5. Telescopically collapsible drinking vessel according to one of the

Embodiments 1 to 4, wherein in a recess, for example a longitudinal recesses, the profiled seal, in particular a V-ring seal, a ring made of a memory alloy is arranged for additional tensioning of the profiled seal.

6. Telescopically collapsible drinking vessel according to one of the

Embodiments 1 to 5, being between the profiled

Seal and a bottom of the groove, a spring element is arranged.

7. Telescopically collapsible drinking vessel after

Embodiment 6, wherein as a spring element, a circumferential, in the

Groove-inserted sealing ring, in particular a sealing ring made of an elastic material such as rubber or cellular rubber, is provided.

8. Telescopically collapsible drinking vessel after

Embodiment 6 or 7, wherein the spring element is a smaller one

Has spring constant than the profiled seal.

9. Telescopically collapsible drinking vessel according to one of the

Embodiments 1 to 8, wherein the groove along an upper outer edge region or along a lower inner

Edge area of the side wall element runs.

10. Telescopically collapsible drinking vessel according to one of the

Embodiments 1 to 9, wherein at least two side wall elements, including in particular the side wall element furthest from the bottom surface when the drinking vessel is pulled apart, from different

Materials exist.

11. Telescopically collapsible drinking vessel according to one of the

Embodiments 1 to 10, wherein the side wall elements in an upper outer and / or a lower inner edge region / 45

Locking elements, in particular part of a

Form locking elements forming bayonet catch.

12. Telescopically collapsible drinking vessel after

Embodiment 11, wherein at least one side wall element on an outer side has at least one guide groove, in particular three guide grooves, and at least one further side wall element in a lower inner edge region has at least one guide pin, in particular three guide pins, for sliding in the at least one guide groove.

13. Flexible hand and transport protection for a telescopically collapsible drinking vessel with an outer shell, the hand and transport protection being heat-insulating and between one

Storage position and a holding position can be transferred, the drinking vessel in the exploded state in the

Holding position can be inserted into the hand and transport protection through two opposite openings of the hand and transport protection which are adapted to a circumference of the drinking vessel, so that the

Drinking vessel is at least partially surrounded by the outer shell and protrudes through both openings.

14. Flexible hand and transport protection according to embodiment 13, the openings being closable, in particular closable by a zipper, push buttons or magnets.

15. Flexible hand and transport protection according to embodiment 13 or 14, wherein the hand and transport protection is lined on the inside of the outer shell with cotton or foam.

16. Flexible hand and transport protection according to one of the

Embodiments 13 to 15, wherein the outer shell tapers from one opening to the other.

17. Flexible hand and transport protection according to one of the embodiments 14 to 16, wherein in the storage position of the flexible hand and transport protection, the drinking vessel is pushed together in the / 45 state into the hand and transport protection

Is fully insertable.

18. Set, consisting of a telescopically collapsible drinking vessel and a flexible hand and transport protection with an outer shell, the hand and transport protection is heat-insulating and can be transferred between a storage position and a holding position, with the drinking vessel in the extended position in the holding position by two Opposite openings of the hand and transport protection that are adapted to a circumference of the drinking vessel can be inserted into the hand and transport protection, so that the drinking vessel at least

partially openings of protrudes. the Surround the outer shell is and through both 19th set to embodiment 18, wherein in the storage position of the hand and transport protection the drinking vessel in the contracted condition entirely in the Hand-

and transport protection can be introduced, the openings being closable by a zipper, snap fasteners or magnets.

20. Set according to embodiment 18 or 19, the shape of the hand and transport protection in the holding position being closely adapted to the shape of the drinking vessel in the pulled-apart state.

The invention is explained in more detail below with the aid of illustrative examples, to which, however, it should not be restricted.

Fig. 1 shows a cross-sectional view of a telescopically collapsible drinking vessel according to the invention in an exploded state.

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2 shows a cross-sectional illustration of a drinking vessel which can be telescopically pushed together in a pushed-together state.

Fig. 3 shows an inventive telescopically collapsible drinking vessel in a side view.

Fig. 4 shows a schematic cross-sectional representation of a profiled seal in a groove in an unloaded state.

Fig. 5 shows a schematic cross-sectional representation of a profiled seal in a groove in a clamped

Status.

Fig. 6 shows a single side wall element in a side view.

Fig. 7 shows a hand and transport protection in its function as a hand protection.

Fig. 8 shows a hand and transport protection in one

Storage and transport position.

FIG. 9 shows a resilient profile seal according to the invention with the aid of a memory metal spring ring in a cross-sectional illustration.

Fig. 1 shows a cross-sectional view of a telescopically collapsible drinking vessel 1 according to the invention in an exploded state. The telescopically collapsible drinking vessel 1, subsequently also only as

Designated drinking vessel 1 has six circular, concentrically arranged side wall elements 2, each with different ones

Diameters which can be telescoped and form a drinking chamber 3 in the pulled-apart state. The drinking chamber 3 preferably has a volume between 0.2 and 0.5

Liters. The side wall elements 2/45 are hydrophobically coated on the inside for easier cleaning. The lowest side wall element 2 with the smallest diameter also forms a bottom surface 4 of the drinking vessel 1. The uppermost and thus the most distant side wall element 2 in the extended position from the bottom surface 4 is thicker compared to the other side wall elements 2 for lip protection and forms an outwardly curved drinking mouth 5, which at the same time acts as a counterpart for a closure cap or a lid 6 can be used. For the sake of simplicity, reference number 7 is assigned to the uppermost side wall element in the following. The uppermost side wall element 7 has the largest

Diameter and preferably consists of polyoxymethylene (POM),

Glass, laboratory glass, porcelain or ceramics. The remaining side wall elements 2 are preferably made of a different material than the uppermost side wall element 7, for example metal or another plastic.

By pushing together and, if necessary, turning slightly, the drinking vessel 1 can be transferred from the pulled-apart to the pushed-together state (cf. FIG. 2). In order to facilitate pushing together or pulling apart, 4 depressions 8 can be engaged on the bottom surface for

Fingers are provided.

As can be seen in particular from FIG. 2, FIG. 4 or FIG. 5, 2 grooves 9 with sealing elements 10 located therein are provided between all side wall elements. In the embodiment shown, all side wall elements 2 form up to the uppermost side wall element 7 along an upper outer one

Edge area 11 each have a groove 9. Alternatively, it can also be provided that the grooves 9 along the lower inner one

Edge regions 12 of the side wall elements 2 run. In this

The top side wall element 7 with the largest would also fall

Diameter have a groove 9, while the groove 9 on the

Bottom surface 4 forming side wall element 2 would be omitted.

/ 45

As can be seen in particular from the schematic representations of FIGS. 4 and 5, sealing elements 10 in the form of profiled seals 13 are accommodated in the grooves 9. To clarify the function, most of the remaining elements of the cup have been left out. The grooves 9 have a bottom 14 and two opposite side walls 15 and thus enclose the profiled seals 10 from three sides. The fourth side, however, is open, so that the profiled

Seal 13 come into contact with another side wall element 2 and can thereby seal the space in between.

According to the invention, it is provided that the profiled seal 13 has at least one longitudinal recess 16. Profiled seals 13 therefore have the advantage that they have lower line loads, as a result of which the friction on the side wall elements 2 when pulled apart is reduced in comparison to conventional O-ring seals. In addition, the profiled seals 13 form two contact points 17 with the

Side wall elements 2, which in turn increases the failover. In comparison, O-ring seals form only a single contact point 17. The profiling also increases the stability of the seal against shifting or rolling. A profiled seal 13 in the sense of the invention

Seal that, similar to a profile seal for window frames, includes at least one cavity when in contact with a surface through the longitudinal recess 16 and with the

Surface forms several contact points 17. The in the

Profiled seal 13 shown in the figures is formed by a so-called X-ring seal, which one from the bottom 14 of the

Has groove 9 facing away from the longitudinal recess 16 and three further recesses 18. But there are also other profiled ones

Seals 13, such as S-ring seals or V-ring seals, can be used without restriction.

In the embodiment shown, the recess 16 is filled with a lubricious, food-compatible lubricant 19, in particular a viscous lubricating paste. The / 45

Recess 16 accordingly forms a depot for the lubricant 19. The lubricant 19 makes it easier for the side wall elements 2 to slide against one another without impairing the tightness.

In order to compensate for component errors, in particular size errors, in the drinking vessel 1 shown in the figures, between the

Sealing element 10 and the bottom 14 of the groove 9, a spring element is arranged. The spring element 20 preferably has a smaller one

Spring constant as the profiled seal 13 and is formed by a circumferential sealing ring 21 inserted into the groove 9, in particular a sealing ring 21 made of an elastic material such as rubber or cellular rubber. Due to the lower spring constant than the profiled seal 13, component defects are largely compensated for by the spring element 20, while the profiled seal 13 essentially retains its shape. This is shown in more detail in FIGS. 4 and 5.

FIG. 4 shows the profiled seal 13 and the spring element 20 in an unloaded state, as occurs, for example, before the drinking vessel 1 is assembled. 5 then shows the profiled seal 13 and the spring element 20 in a clamped state. It can be seen that the spring element 20 is compressed more than the profiled sealing element 13 due to the lower spring constant.

In a further embodiment according to the invention, the resilient property of a specially modified and miniaturized V-ring seal 37 as a sealing element 10 or

to increase the profiled seal 13 in that a spring ring 36 is placed in it, that is to say in its recess. It can of course also, as in the other embodiment according to

Fig. 4 and Fig. 5, between the sealing element 10 and the

Bottom 14 of the groove 9, a spring element 20 may be arranged. As shown in FIG. 9, the V-ring seal sits in the groove 9 and is pushed in from below, so to speak. After insertion, the non-closed and tension-free spring ring 36 made of a memory alloy, for example TiNi, is inserted into the recess / 45 of the V-ring seal from above. The absence of voltage is achieved in that the spring ring 36 has a larger one in this state

Has diameter or circumference as the side wall element. The spring tension in the spring ring 36 arises only when the entire

Telescopic coffee mug experiences a temperature of approx. 90 to 100 ° C after final assembly. At this temperature the spring ring returns to its original shape, i.e. narrower or wider shape, back and thereby secures the V-ring seal in the groove 9 or presses against the further, outer side wall element 2 - depending on which effect is to be achieved.

As can be seen in FIG. 6, the illustrated side wall element 2 has a guide groove 22 on the outside. Overall are pro

Side wall element 2 (except for the side wall element 7) three such guide grooves 22 are provided at regular intervals along the circumference. Through the guide grooves 22, the movement during

Pull apart the drinking vessel 1, because in the

Guide grooves 22 (indicated) can engage guide pins 26 of another side wall element 2 and slide along. For smooth guidance, the guide grooves 22 extend at an acute angle to the longitudinal axis of the pulled apart

Drinking vessel 1. Around the drinking vessel 1 in the pushed together

To fix the position, the guide groove 22 forms at its end facing the lower edge region 12 a horizontal groove part as the end position. At its end facing the upper edge region 11, the guide grooves 22 merge into locking elements 24 in the form of locking grooves 25. For sliding in the guide grooves and locking grooves 25, the side wall elements 2, as already mentioned, have three guide pins 26 on the inside in the lower edge region 12 for sliding in a corresponding one

Guide groove 22 on. When pulled apart, the guide pins 26 slide along the respective guide grooves 22 and finally snap into the detent grooves 25 in the pulled-apart position of the drinking vessel 1.

/ 45

As is apparent from Fig. 6, the locking or securing the

Locking grooves 25 achieved in that the locking grooves 25 form a downward angled end position 27.

Fig. 7 shows a separate from the drinking vessel 1 hand and

Transport protection 28 with a drinking vessel 1 inserted therein. The hand and transport protection 28 consists of a flexible material such as leather or fabric, is heat-insulating and has one

Outer shell 29 and two opposite openings 30. Der

Hand and transport protection 28 can be moved from the holding position shown in FIG. 7 into the storage position shown in FIG. 8 by being compressed.

Through the openings 30, the drinking vessel 1 in the hand and

Transport protection 28 can be inserted precisely, so that the drinking vessel 1 protrudes through the openings 30. The hand and

Transport protection 28 is particularly necessary when enjoying hot beverages, since the side wall elements 2 of drinking vessels 1 which can be telescopically pushed together must be thin, but this favors the heat transfer from the inside to the outside. As a result, the drinking vessels 1 become so hot that they cannot be touched with the bare hand without protection.

The hand and transport protection 28 is specially designed for telescopically collapsible drinking vessels 1 of the type mentioned at the beginning

Adjusted to minimize dead spaces. With “Be dead dreams

Cavities and air pockets between the hand and transport protection 28 and the drinking vessel 1 designated.

For this purpose, the openings 30 are adapted to the circumference and preferably also the cross section of the drinking vessel 1. Preferably, the outer casing 29 is also adapted to the drinking vessel 1 in such a way that it lies on the outside 31 of the drinking vessel 1 essentially without wrinkles and curvature and prevents the drinking vessel 1 from slipping. This is achieved in that the outer casing 29 in the holding position

Essentially has the conical shape of the outside 31 of the drinking vessel / 45 and the openings 30 are adapted to a circumference of the drinking vessel. In particular, the two openings 30 are of two different circumferences or cross sections

Side wall elements 2 adapted. For example, an opening may have the circumference of the side wall element 2 with the largest

Diameter and the opposite opening 30 the circumference of the

Have side wall element 2 with the smallest diameter.

The adjustment of the openings 30 to intermediate ones

Side wall elements 2 is possible. Because of the different

Size of the openings 30, the hand and transport protection 28 has a preferred direction in which the drinking vessel 1 in the

Hand and transport protection 28 must be inserted. If, in addition, the maximum normal distance between the edges 32 of the openings 30 corresponds to the height of the drinking vessel 1 in the pulled-apart state, the drinking vessel 1 can be inserted into the hand and transport protection 28 in the holding position such that essentially the entire outside 31 of the drinking vessel 1 is covered. However, it can also be shown in FIG. 7 that the maximum normal distance between the edges 32 of the openings 30 is somewhat less than the height of the drinking vessel 1.

“Normal distance denotes the distance projected on the longitudinal axis of the hand and transport protection 28.

Around the hand and transport protection 28 to different sizes

To be able to adapt drinking vessels 1, a predetermined kink 33 running on the outside can be provided, so that projecting edge regions 34 assigned to the openings 30 can be turned inside out.

By squeezing or folding the hand and transport protection, it can be transferred from the holding position to the storage position according to FIG. 8. In the storage position, the drinking vessel 1 can be completely pushed into the

Hand and transport protection 28 can be inserted. The openings 30 can then be closed by magnets, push buttons, a lacing system or, as shown, by a zipper 35, as a result of which the drinking vessel is transported in a / 45

Bag or the like is protected. The hand and transport protection 28 is preferably coated hydrophobically.

An example of a rough calculation for dimensioning the hand and transport protection 28 is shown below. Since the drinking vessel 1 can also be closed with a lid 6, this should also find space in the hand and transport protection 28.

Let D _{h be} the diameter between the two openings 30 of the hand and transport protection 28 in the storage position or the height of the hand and transport protection 28 in the holding position, D _d the diameter of the lid 6, H _tot the total height of the drinking vessel 1 in the extended state, V the volume of the drinking chamber 3 and H the level in the drinking vessel 1.

If the hand and transport protection 28 is to leave a distance of 2.4 cm from the drinking mouth 5 in the holding position of the drinking vessel 1, the following must apply

D _n = Hges - 2.4 cm. (1)

To close the hand and transport protection 28 with magnets or zippers, an edge area of 1.8 cm at each opening 30 should be taken into account in the storage position. For this reason, the relationship applies

D _h = D _d + 1.8 cm + 1.8 cm. (2)

Approximately applies to the volume V of the drinking chamber 3

where D is the diameter of the side wall element 2 with the mean diameter, which is approximately the average

28/45 between the smallest and the largest diameter. The

Relationship of equation (3) can now be solved for D:

(4)

The diameter of the central side wall element 2 can thus be determined from the fill level H and the volume V. If it is now assumed that the side wall element 2 with the largest diameter, that is to say that which forms the drinking mouth 5, has a diameter that is 1.62 cm larger than the middle side wall element 2 and the cover 6 has a diameter that is 1.78 cm larger has, the diameter of the lid 6 to [Äv

Dd = ---- l3.4cm

J Calculate H Htt (5). Subsequently, by inserting equation (5) into equation (2), the diameter of the hand and transport protection 28 in the storage position and the height of the hand and transport protection 28 in the holding position can be obtained

4V —— + 7cm

Calculate Ηπ (6). This shows how the diameter D _{d of} the cover 6 is related to the diameter D _{H of} the hand and transport protection 28 and how the fill level H, the volume V and the diameter of the hand and transport protection 28 are linked. It can thus be seen at which dimensions combinations of the telescopic cup a predetermined kink 33 in the hand protection is necessary, whereby the minimization of the dead spaces is always guaranteed.

Claims (15)

1. Telescopically collapsible drinking vessel (1) with a Bottom surface (4) and at least two telescopic telescopic side wall elements (2), between which a sealing element (10) is introduced into a groove (9) of a side wall element (2) for sealing, characterized in that a profiled seal (10) 13), in particular a profiled ring seal, with at least one longitudinal recess (16) is provided, the profiled seal (13) between a bottom (14) of the groove (9) and a further side wall element (2) with a compression relative to the Height of the profiled seal (13) of minimal 6% and a maximum of 10% is clamped. 2. Telescopically collapsible drinking vessel (1) according to claim 1, characterized in that the profiled seal (13) is an X-ring seal, a V-ring seal, a Y- Ring seal, a Δ ring seal or an S ring seal, wherein the profiled seal (13) is preferably coated with polytetrafluoroethylene or a lacquer. 3. Telescopically collapsible drinking vessel (1) after Claim 1 or 2, characterized in that the at least one recess (16) of the profiled seal (13) from one Bottom (14) of the groove (9) faces away. 4. Telescopically collapsible drinking vessel (1) according to one of claims 1 to 3, characterized in that the at least one recess (16) is filled with a lubricious, food-compatible lubricant (19), in particular a lubricating paste. 5. Telescopically collapsible drinking vessel (1) according to one of claims 1 to 4, characterized in that in a recess, for example a longitudinal recesses, the profiled seal (13), in particular a V-ring seal 30/45 (37), a ring (36) made of a memory alloy for additional tensioning of the profiled seal (13) is arranged. 6. Telescopically collapsible drinking vessel (1) according to one of claims 1 to 5, characterized in that a spring element (20) is arranged between the profiled seal (13) and a bottom (14) of the groove (9). 7. Telescopically collapsible drinking vessel (1) after Claim 6, characterized in that a circumferential sealing ring (21) inserted in the groove (9), in particular a sealing ring (21) made of an elastic, is used as the spring element (20) Material such as rubber or cellular rubber is provided. 8. telescopically collapsible drinking vessel (1) according to claim 6 or 7, characterized in that the spring element (20) has a smaller spring constant than the profiled seal (13). 9. telescopically collapsible drinking vessel (1) according to one of claims 1 to 8, characterized in that the groove (9) along an upper outer edge region (11) or along a lower inner edge region (12) of the side wall element (2). 10. Telescopically collapsible drinking vessel (1) according to one of claims 1 to 9, characterized in that at least two side wall elements (2), including in particular the one in the pulled-apart state of the drinking vessel (1) from the bottom surface (4) the most distant side wall element (2 ), consist of different materials. 11. Telescopically collapsible drinking vessel (1) according to one of claims 1 to 10, characterized in that the side wall elements (2) in an upper outer and / or a lower inner edge region (11, 12) locking elements (24), 31/45 in particular form locking elements forming part of a bayonet catch. 12. Telescopically collapsible drinking vessel (1) according to claim 11, characterized in that at least one side wall element (2) on an outside at least one guide groove (22), in particular three guide grooves (22), and at least one further side wall element (2) in a lower one inner edge region (12) has at least one guide pin (26), in particular three guide pins (26), for sliding in the at least one guide groove (22). 13. Set consisting of a telescopically collapsible drinking vessel (1) according to one of claims 1 to 12 and a flexible hand and transport protection (28) with an outer shell (29), characterized in that the hand and transport protection (28) is heat-insulating and can be transferred between a storage position and a holding position, the drinking vessel (1) in the extended position in the holding position through two opposite openings (30) of the hand and transport protection (28) adapted to a circumference of the drinking vessel (1) Hand and transport protection (28) can be inserted, so that the drinking vessel (1) is at least partially surrounded by the outer shell (29) and protrudes through both openings (30). 14. Set according to claim 13, characterized in that in the storage position of the hand and transport protection (28), the drinking vessel (1) can be fully inserted into the hand and transport protection (28), the openings (30). can be closed with a zipper, snap fasteners or magnets. 15. Set according to claim 13 or 14, characterized in that the shape of the hand and transport protection (28) in the holding position is closely adapted to the shape of the drinking vessel (1) in the pulled-apart state.