Closure for a water container for a water line

Abstract

The invention discloses a closure bottom for a substantially rotationally symmetrical water container of a water line, comprising an axially extending closure element having a continuous opening in axial direction; wherein the closure bottom comprises a clamping device having a circumferential clamping element which is changeable in radial direction, which is configured to generate a radially directed clamping force in its state of mounting to the water container in order to clamp the closure bottom between opposite walls of the water container or in order to clamp the water container between opposite walls of the closure bottom; wherein the clamping force is based on a change of the diameter of the clamping element in radial direction, the closure bottom further comprising a displacement element which is displaceable in axial direction relative to the clamping element, which is configured to change the clamping element in radial direction due to an axial displacement of the displacement element relative to the closure element. Furthermore, the invention discloses a closure for a substantially rotationally symmetrical water container of a water line and a water line.

Description

Technical Field

[0001] The present invention relates to a sealing bottom of a water container for a water pipe, a sealing member having the sealing bottom, and a water pipe having the sealing member. Background Technology

[0002] A water pipe, also known as a shisha or hookah, typically comprises a water container called a bottle and a closure attached to the water container. A smoke tube is connected to the closure, and a tobacco bowl is positioned at the upper end of the closure, where tobacco is burned or evaporated along with hot coals. The smoke tube extends through the closure into the water container, with its lower end below the water level. Additionally, at least one soft smoke tube extends through a corresponding groove into the air space within the water container positioned between the tobacco bowl and the water level. When the user inhales through the soft smoke tube, a negative pressure is created in the air space within the water container. The tobacco smoke is drawn through the smoke tube by means of this negative pressure and is purified, cooled, and / or humidified as it passes through the liquid.

[0003] Therefore, it is crucial that the closure completely seals the water container, otherwise secondary air will be drawn in, and the water pipes will lack the necessary tensile strength. The bottles are typically hand-blown, with manufacturing tolerances up to 2mm.

[0004] For example, a known closure is formed as a positive thread closure (see...). Figure 1 and Figure 3 ) or a non-positive insertion closure (see Figure 2 and Figure 4 It has a communication opening for one or more smoke hoses.

[0005] However, a drawback of positive thread closures is the need for a closure bottom at the bottle. The closure bottom must be tightly connected to the bottle, for example, glued together. A direct positive engagement between the closure element and the bottle is impossible due to the large manufacturing tolerances of the bottle. Bottles without a suitable closure bottom cannot be used with the closure element. Generally speaking, it can be said that such closures are uneconomical and proprietary.

[0006] Traditional insertable closures use flexible gaskets without a proper engagement to form a sealed connection with the bottle. The disadvantage here is component instability. Therefore, for example, it's impossible to safely lift the entire water pipe at the chimney, as the component may detach or release. Force is required to establish and release the connection. The required force depends on the width of the gap between the closure element and the bottle, as well as the flexible gasket. Due to manufacturing reasons, the inner diameter of the bottle can vary by up to 2mm. Because of the resulting variations in gap width, the force required to establish and release the connection varies considerably. This is disliked by many consumers, as water pipes operate on hot coals, and users expect stable and safe products. Generally speaking, such closures can be considered inconvenient and unsafe. Summary of the Invention

[0007] In view of the above-mentioned prior art, the object of the present invention is to provide an adapter or closure for water pipes that is safe, simple and convenient to use, and can be used on water containers (or bottles) with different connection sizes.

[0008] According to the invention, this objective is achieved by the closure bottom (which is an adapter) taught in the first aspect of the invention and the closure taught in the second aspect of the invention. The water pipe according to the invention is defined in the third aspect of the invention. Advantageous embodiments of the invention are the subject of the dependent claims.

[0009] According to the invention, the bottom of a closure for a water container in a water pipe includes a closure element extending in an axial direction and having a continuous opening in that direction. The bottom of the closure includes a clamping device having a circumferential clamping element that is variable in a radial direction. The clamping element is configured to generate a radially oriented clamping force when fixed to the water container to clamp the bottom of the closure between opposing walls of the water container, or to clamp the water container between opposing walls of the bottom of the closure. The clamping force is based on a change in the diameter of the clamping element in the radial direction.

[0010] Due to the radial clamping force, when the bottom of the closure is fixed to the water container, the bottom of the closure forms a stable assembly with the water container by reducing or suppressing the displacement of the closure relative to the water container, particularly the radial displacement. In the fixed state, the bottom of the closure and the water container are connected to each other through a non-positive engagement. Furthermore, the radial gap between the water container and the closure element can thus be sealed, preventing secondary air from being drawn into the bottle through this gap when inhaled through the hose of the water pipe. Additionally, the magnitude of the clamping force allows it to compensate for the weight of the water container, enabling the water pipe to be lifted from the bottom of the closure without detaching the bottle from it, simplifying the use of the water pipe.

[0011] In one embodiment of the invention, the bottom of the closure further includes a displacement element capable of axially displacing relative to the clamping element. The displacement element is configured to change the clamping element in the radial direction due to the axial displacement of the displacement element relative to the closure element. For example, the displacement element may include a first surface and may be configured to compress the clamping element between the first surface and a second surface of the closure element axially opposite to the first surface, such that the diameter of the clamping element changes in the radial direction due to the axial displacement.

[0012] By reversing the axial displacement in a simple way, the clamping force can be generated and released again.

[0013] Here, when referring to the movement (e.g., displacement, rotation, etc.) of the first element relative to the second element, it refers to the relative movement between the first element and the second element. That is, the first element can move, while the second element can remain still or move differently from the first element; or the second element can move while the first element remains still or moves differently from the second element.

[0014] To enable axial displacement, the bottom of the closure may optionally include an operating element connected to the displacement element.

[0015] In another embodiment of the invention, the first surface of the displacement element and / or the second surface of the closing element are inclined relative to the surface perpendicular to the axial direction.

[0016] Therefore, due to the axial displacement of the displacement element, the clamping element can be displaced in the radial direction. Since the first and / or second surfaces are inclined, a radial component force is generated, which causes the clamping element to displace in the radial direction, for example, to unfold it. This is another possibility, besides compression in the axial direction, for changing the diameter of the clamping element in the radial direction to generate a clamping force.

[0017] This effect can also be achieved by placing the clamping element at the axially extending portion of the displacement element, such that the clamping element overlaps with the radial protrusion in that portion, and that the outer diameter of the displacement element decreases in that portion along the direction of the closed element.

[0018] If the first and / or second surfaces are inclined, the axial component of the force can be reduced, where applicable, so that the clamping element is compressed only very slightly. This is also a state in which the clamping element between the first surface and the second surface of the closing element, which is axially opposite to it, is compressed due to the axial displacement of the displacement element.

[0019] In another embodiment, the closing element has a threaded cylindrical portion, and the displacement element includes a correspondingly mating cylindrical portion, configured such that the displacement element and the closing element are displaceable relative to each other due to axial rotational movement. In one embodiment, the displacement element includes, for example, an internal thread, and the cylindrical portion of the closing element includes a corresponding external thread. In another embodiment, the displacement element includes, for example, an external thread, and the cylindrical portion of the closing element includes a corresponding internal thread.

[0020] Axial displacement can be advantageously achieved using this threaded device. Axial displacement corresponds to the translational component of the helical motion.

[0021] In one embodiment of the closure bottom with such a threaded device, the displacement element is configured to frictionally contact the wall of the water container while the displacement element is fixed to the water container, such that when the displacement element rotates, the co-rotation of the displacement element is reduced or suppressed due to friction. To facilitate this frictional contact, the area of ​​the displacement element in contact with the wall of the water container may include a material that increases friction relative to the wall of the water container or be coated with such a material.

[0022] When the closing element rotates, the closing element rotates relative to the displacement element, causing the displacement element to shift axially relative to the closing element.

[0023] In another embodiment of the closure bottom with such a threaded device, the clamping element is configured to frictionally contact the wall of the water container when it is fixed to the water container, such that when the displacement element rotates, the co-rotation of the clamping element is reduced or suppressed due to friction. Furthermore, the clamping element and the displacement element are in frictional contact with each other. Additionally, the closure bottom may include a friction-reducing element or a friction-reducing coating disposed axially between the second surfaces of the clamping element and the closure element, and this friction-reducing element or coating is configured such that when the closure element rotates, the co-rotation of the clamping element is reduced or suppressed.

[0024] Therefore, it prevents or suppresses the co-rotation of the displacement element when the closing element rotates. That is, when the closing element rotates, the closing element rotates relative to the displacement element, the effect of which is that the displacement element is displaced axially relative to the closing element.

[0025] In another embodiment of the invention, the bottom of the closure includes a valve system for supplying compressed air to the clamping element, and is configured such that the supply of compressed air causes a change in the diameter of the clamping element, for example, due to an increase or decrease in pressure within the clamping element. Therefore, the clamping force can be set by the supplied compressed air. Thus, a displacement element is not required in such an embodiment.

[0026] In another embodiment, the clamping element includes an elastic element, such as a spring, configured to achieve radial change in the clamping element, and also includes a ventilation device for reducing the main pressure in the clamping element. For example, the spring radially outwardly presses against the outer wall of the clamping element, and thus generates a clamping force when the spring is fixed to the water container. This is counteracted by a pressure reduction in the clamping element achieved by means of the ventilation device. Therefore, the clamping force can be set by controlling the pressure in the clamping element. In this embodiment, a displacement element can also be omitted.

[0027] In another embodiment, the bottom of the closure includes a connecting device for connecting the upper part of the closure at the end opposite the clamping device in the axial direction, i.e., at its upper end.

[0028] The closure according to the invention includes a closure bottom according to the invention, and an upper closure portion is fixed at the upper end of the closure bottom, i.e. at the end opposite to the clamping device in the axial direction. The upper closure portion includes a second closure element, a continuous opening for a flue, at least one communicating opening for at least one flue, and at least one continuous first groove for a breathable connection between the water container and the communicating opening.

[0029] In one embodiment of the closure, the second closure element has a substantially cylindrical portion, and the first closure element has a substantially cylindrical portion. They are inserted into each other and configured such that axial displacement of the first closure element relative to the second closure element is prevented by positive engagement, while maintaining 360° rotatability of the first closure element relative to the second closure element. This rotatability provides the advantage that operation becomes more variable without compromising the stability of the closure.

[0030] In one embodiment, positive engagement is achieved by the cylindrical portion of the first closure element and / or the cylindrical portion of the second closure element including a circumferential groove, with an axial blocking element (e.g., an O-ring) fitted into the circumferential groove.

[0031] In another embodiment of the closure, the bottom of the closure according to the invention is integrally formed with the upper part of the closure, such that the closure element includes at least one continuous first groove for at least one smoke hose and for a breathable connection between the water container and the communication opening.

[0032] According to the present invention, a water pipe is also provided, comprising a water container and a closure according to the present invention, the closure being fixed thereon according to one of the above embodiments.

[0033] In embodiments of the water pipe, the water container includes a groove for accommodating a clamping element. It can be circumferentially surrounding the water container, and in embodiments where the closure element is clamped between opposing walls of the water container, it is typically disposed along the inner wall of the water container, and in embodiments where the water container is clamped between opposing walls of the closure element, it is disposed along the outer wall of the water container. Therefore, in addition to the aforementioned non-positive engagement, a positive engagement between the closure element and the water container is also possible. Thus, the sealing performance and stability of the water pipe can be further improved. Attached Figure Description

[0034] Further features and advantages of this embodiment will become apparent from the following drawings, comparative examples and exemplary embodiments, which are provided as examples to explain the invention in more detail, but not to limit the invention thereto.

[0035] Figure 1 This is a schematic diagram (not drawn to scale) of a general structure of a water pipe with a closure according to the prior art, which includes two closure elements;

[0036] Figure 2 This is a schematic diagram (not drawn to scale) of a general structure of a water pipe with a closure according to the prior art, which includes a single closure element;

[0037] Figure 3 A first comparative example of a closure element configured according to the prior art as having two closure elements and an optional valve device as a check valve;

[0038] Figure 4 A second comparative example of a closure element configured according to the prior art, having a closure element and an optional valve device as a check valve;

[0039] Figure 5a According to a first exemplary embodiment of the closure for a water container for a water pipe of the present invention, the closure has a clamping element with an adjustable diameter in the open state, and the bottom of the closure is integrally formed with the upper part of the closure.

[0040] Figure 5b According to Figure 5a A schematic diagram of the closure member of the present invention in a clamping state;

[0041] Figure 6 a to Figure 6 c represents a displacement element with friction elements of different shapes;

[0042] Figure 7 According to Figure 5a The schematic diagram shows the closure of the present invention in a clamping state, and the water container also includes a groove for accommodating the clamping element;

[0043] Figure 8a In a second exemplary embodiment of the closure for a water container for a water pipe according to the present invention, the closure has a clamping element with an adjustable diameter in the open state, and the bottom of the closure is integrally formed with the upper part of the closure.

[0044] Figure 8b According to Figure 8a A schematic diagram of the closure member of the present invention in a clamping state;

[0045] Figure 9 According to a third exemplary embodiment of the closure for a water container for a water pipe of the present invention, the closure has a clamping element with a variable diameter in a clamping state, and the bottom of the closure is integrally formed with the upper part of the closure.

[0046] Figure 10 According to a fourth exemplary embodiment of the closure for a water container for a water pipe of the present invention, the closure has a clamping element with a variable diameter in a clamping state, and the bottom of the closure is integrally formed with the upper part of the closure.

[0047] Figure 11 According to a fifth exemplary embodiment of the closure for a water container for a water pipe of the present invention, the closure has a pneumatic clamping element with a variable diameter in a clamping state, and the bottom of the closure is integrally formed with the upper part of the closure.

[0048] Figure 12 According to a sixth exemplary embodiment of the closure for a water container for a water pipe of the present invention, the closure has a vacuum-operated clamping element with a variable diameter in a clamped state, and the bottom of the closure is integrally formed with the upper part of the closure.

[0049] Figure 13a According to a seventh exemplary embodiment of the closure for a water container for a water pipe of the present invention, the closure has a clamping element with a variable diameter in a clamping state, and the bottom of the closure is integrally formed with the upper part of the closure.

[0050] Figure 13b According to Figure 13a A schematic diagram of the closure of the present invention in the open state;

[0051] Figure 14a According to an eighth exemplary embodiment of the closure for a water container for a water pipe of the present invention, the closure has a clamping element with a variable diameter in the open state, and the bottom and top of the closure are formed separably from each other by a threaded device.

[0052] Figure 14b According to Figure 14a The closure of the present invention, wherein the upper part 42 of the closure is not in a clamping state;

[0053] Figure 15 According to a ninth exemplary embodiment of the closure for a water container for a water pipe of the present invention, the closure has a clamping element with a variable diameter in the open state, and the bottom and top of the closure can rotate 360° relative to each other.

[0054] The meanings of the reference numerals in the figure are as follows:

[0055] 01'- First sealing element according to the prior art

[0056] 02'-Second enclosing element according to the prior art

[0057] 01-(First) Enclosing Element

[0058] 02-Second sealing element

[0059] 03-Water

[0060] 04-Liquid Level

[0061] 05-Water Container (Bottle)

[0062] 06-(Multi-part) flue

[0063] 07-Air Space

[0064] 08-Blade Seal

[0065] 09-Valve Device

[0066] 10-Valve body

[0067] 11-Valve seat

[0068] 12-(First) Cylindrical portion of the closing element

[0069] 13. The walls of the water container

[0070] 14-Cylindrical portion of the second enclosing element

[0071] 15-Protrusion

[0072] 16- Clamping element (at the closing element)

[0073] 17-Tobacco Bowl

[0074] 18-(First) Outer wall of the sealing element

[0075] 19-Tobacco hose connection opening

[0076] 20-cigarette hose

[0077] 22 - Continuous opening (for cigarette hoses)

[0078] 23- Upper flue

[0079] 24-Lower flue

[0080] 26 - Groove for connecting openings

[0081] 27-Tobacco Hose Connection Groove

[0082] 30 - Upper part of the closed element

[0083] 31-groove

[0084] 32-Displacement element with internal thread

[0085] 33-Displacement element with external thread

[0086] 34 - Unthreaded displacement element

[0087] 35-Operating element

[0088] 36- Clamping element (located at the displacement element)

[0089] 38 - Part of the displacement element

[0090] 39-Thread

[0091] 41-Bottom of the closure

[0092] 42-Upper part of the closure

[0093] 51-Neck of the water container

[0094] 52-groove

[0095] 53-Valve Body

[0096] 54-Valve Seat

[0097] 55-Valve Device

[0098] 56-gap

[0099] 61-Clamping element (diaphragm)

[0100] 62-valve

[0101] 63-Ventilation device

[0102] 64 - Elastic elements (e.g., springs)

[0103] 66-(First) Cylindrical portion of the enclosing element

[0104] 67- Cylindrical portion of the second enclosing element

[0105] 68-Circumferential Groove

[0106] 69-Axial blocking element

[0107] 70-Friction element

[0108] 71-Threaded Device

[0109] 72-Connecting device

[0110] 80-First surface of displacement element

[0111] 81 - The second surface of the closed element

[0112] 97-Clamping Device

[0113] 98 - The closure according to the invention

[0114] 98'-Standard enclosure

[0115] 99-Water Pipe Detailed Implementation

[0116] According to existing technologies, such as Figure 1 The water pipe 99 shown first includes a water container 05 containing water 03 during operation, such that the air space 07 is maintained above the liquid level 04. The water container 05 is closed by a closure 98'. A smoke pipe 06 extends through the closure 98', with its lower end opening in the water 03 below the liquid level 04 in the water container 05. A tobacco bowl 17 is provided in the area at the upper end of the smoke pipe 06, which contains heated coal and tobacco to be evaporated. A smoke hose 20 is disposed in a groove 27 of the closure 98', extending through the closure 98' into the air space 07. When the user inhales through the smoke hose 20, a negative pressure is generated in the water container 05, more precisely in the air space 07, and through this negative pressure, air rich in evaporated tobacco flavoring is drawn through the smoke pipe 06 and the water 03, and supplied to the user through the smoke hose 20 in a cooled, purified, and humidified state. In order to generate this negative pressure, it is important that the gap between the water container and the closure be sealed so that secondary air that would hinder the generation of negative pressure is not drawn in.

[0117] The closure 98' includes a first closure element 01' and a second closure element 02', which can be interlocked or threaded together. The second closure element 02' is permanently attached, for example, to the bottle 05, to achieve the desired seal. The disadvantage here is that, due to the high manufacturing tolerances in the production of the water container 05, this closure 98' typically must be individually adapted to the water container 05, making manufacturing more expensive.

[0118] According to existing technology, Figure 2 The water pipe 99 shown is Figure 1 The water pipes correspond to the design of the 98' closure. Figure 2The illustrated closure 98' includes a separate closure element 01', which is provided with a blade seal 08. A disadvantage here is that the assembly of the closure 98' and the water container 05 is generally unstable and may move or shift in the radial and / or axial directions.

[0119] Figure 3 The prior art is shown in detail. Figure 1 An exemplary embodiment of the two-part closure 98' is shown. It includes a first closure element 01' and a second closure element 02', and an optional valve device 09. The second closure element 02' includes a substantially cylindrical portion 14, which has a flange-type protrusion 15 at its lower end (i.e., the end facing the water container 05). The inner diameter of the flange-type protrusion 15 is slightly larger than the outer diameter of the neck 51 of the water container 05, such that the second closure element 02' can be placed on the neck 51 of the water container 05, and for example, can be glued there. The neck 51 of the water container 05 is the upper region of the water container 05 having a substantially cylindrical shape.

[0120] The first closure element 01' has an upper portion 30 and a cylindrical portion 12 that is also substantially cylindrical. The shape and size of the cylindrical portion 12 of the first closure element 01' allow it to be inserted into or screwed into the cylindrical portion 14 of the second closure element 02', and can be removed from it again.

[0121] The first sealing element 01' includes a continuous opening 22. Two-part smoke pipes 23 and 24 are connected inside this opening 22, with the upper smoke pipe 23 screwed into the upper region of the opening 22 and the lower smoke pipe 24 screwed into the lower region of the opening 22. (Example...) Figure 1 or Figure 2 As shown, the tobacco bowl 17 is fixed to the upper end of the upper tobacco pipe 23 (not shown). The lower tobacco pipe 24 leads to the water 03 in the water container 05.

[0122] Two grooves 26, each with a connecting opening 19 for connection. Figure 1 or Figure 2 The shown cigarette hoses 20 are respectively disposed in the upper part 30 of the first sealing element 01' at an angle of approximately 45° relative to the axis of the cigarette hose. The groove 26 for accommodating the communicating opening 19 leads to the substantially cylindrical groove 27 that opens relative to the internal air space 07.

[0123] Optional valve assembly 09 includes a valve body 10 and a valve seat 11 disposed in the recess 27. A communication opening 19 is screwed into a first closing element 01'. The threaded connection is releasable, allowing the valve body 10 to be selectively removed.

[0124] Figure 4 The prior art is shown in detail. Figure 2 An exemplary embodiment of the closure 98' shown is provided. It provides a single closure element 01' comprising a generally cylindrical portion 12, the outer diameter of which is slightly smaller than the inner diameter of the neck 51 of the water container 05, so that it can be inserted into and removed from the neck 51 of the water container 05.

[0125] In its cylindrical portion 12, the closure element 01' includes a circumferential blade seal 08 that makes sealing contact with the wall 13 in the neck 51 of the water container 05, thereby sealing the gap 56 between the outer wall 18 of the closure element 01 and the inner wall 13 of the neck 51.

[0126] The upper part 30 of the closing element 01' includes at least one groove 26, and the communicating openings 19 are respectively introduced into the groove 26 for connection. Figure 1 and Figure 2 The shown is a smoke hose 20. At least one groove 26 for receiving at least one smoke hose 20 leads to at least one groove 27 opening to the lower end of the closing element 01' and to the air space 07.

[0127] The enclosure element 01' also includes one or more optional recesses 52 that allow the air space 07 to connect with the surrounding environment. At least one optional valve device 55 is provided in at least one recess 52, the valve device 55 including a valve body 53 and a valve seat 54.

[0128] Figure 5a A first exemplary embodiment of a closure 98 for a water container 05 for a water pipe 99 according to the present invention is shown. In this embodiment, the bottom 41 of the closure is integrally formed with the upper part 42 of the closure. Figure 14a A similar embodiment is shown in which the bottom 41 of the closure is not integrally formed with the upper 42 of the closure.

[0129] Since the water container 05 used for the water pipe 99 is typically rotationally symmetrical with respect to the axis of rotation A1 due to its manufacturing process, when describing the closure 98 according to the invention, with reference to such an axis, the direction parallel to the axis of rotation A1 is referred to as the axial direction, and the direction perpendicular to the axis of rotation A1 that radiates from or extends toward the axis of rotation A1 is referred to as the radial direction. However, the closure 98 according to the invention is not limited to the rotationally symmetrical water container 05. This is expressed in the claims using the word "substantially". In the exemplary embodiments shown, the axial direction is also a vertical direction, and the radial direction is a horizontal direction, but is not limited thereto.

[0130] Figure 5aThe illustrated closure 98 includes an axially extending closure element 01 having a continuous opening 22 for a flue 06, at least one communicating opening 19 for at least one flexible flue 20, and at least one continuous first groove 27 for a breathable connection between a water container 05 and the communicating opening 19. Figure 3 As shown, the two-part smoke pipes 23 and 24 can be connected within the opening 22, wherein the upper smoke pipe 23 can be screwed into the upper region of the opening 22, and the lower smoke pipe 24 can be screwed into the lower region of the opening 22. Figure 1 or Figure 2 As shown, the tobacco bowl 17 can be fixed to the upper end (not shown) of the upper tobacco pipe 23. The lower tobacco pipe 24 extends into the water container 05 and can be connected to the water 03 within the water container 05 during operation. In this respect, the sealing element 01 is no different from the prior art and can be modified according to the prior art. Therefore, Figure 5a The closing element 01 (and the additional closing elements 01, 02 described below) may also include, for example, reference to Figure 3 and Figure 4 The valve devices described are 09 and 55.

[0131] According to the invention, the closure 98 includes a clamping device 97 at its bottom 41, the clamping device 97 including a radially variable circumferential clamping element 16. Here, the clamping element 16 is disposed at an axially extending portion 12 of the closure 01, such that it overlaps with the portion 12 in a radial protrusion. Figure 5a As shown, this clamping element 16 can be a sealing ring (O-ring), for example, it surrounds portion 12 of the closing element 01 and can be introduced into the water container 05. This portion 12, which can be introduced into the water container 05, can be referred to as the lower portion because it faces the water container 05, and can be, for example, cylindrical, and like the clamping element 16, has an outer diameter slightly smaller than the inner diameter of the neck 51 of the water container 05, so that it can be introduced into the neck 51 of the water container 05. Therefore, Figure 5a The closure element 01 shown is configured to be at least partially introduced into the neck region 51 of the water container 05. The upper region 30 of the closure element 01 (i.e., the portion of the upper part 42 of the closure that is axially further away from the lower part of the water container 05) may have an outer diameter larger than the inner diameter of the neck 51 of the water container 05, such that only the lower part 12 of the closure element 01 can be introduced into the neck 51 of the water container 05.

[0132] At the bottom 41 of the closure, according to Figure 5aThe closure 98 of the present invention also includes a displacement element 32, which is axially displaceable relative to the closure element 01. The displacement element 32 is configured to change the radial diameter of the clamping element 16 due to the axial displacement relative to the closure element 01. This change can be an increase in diameter, as shown here. This can be achieved by compression of the clamping element 16 in the axial direction. For this purpose, the displacement element 32 has a first surface 80 in the axial direction, and the closure element 01 has a second surface 81 opposite to the first surface 80 of the displacement element 32. Due to the axial displacement of the displacement element 32 relative to the closure element 01, the clamping element 16 is compressed between the first surface 80 and the second surface 81. Due to this compression, the clamping element 16 extends radially, particularly when it is made of an elastic material, and thus its diameter increases radially. Figure 5b As shown, it thus presses against the inner wall 13 of the water container, thereby clamping the closure element 01 surrounded by the clamping element 16 between the opposing inner walls 13 of the water container 05. The clamping element 16 is therefore configured to generate a clamping force for clamping the closure element 01 between the opposing walls 13 of the water container 05 due to axial compression. In this state, the clamping element 16 is in a state where it is fixed to the water container 05. This state can be referred to as the clamping state. Conversely, Figure 5a The open state is shown because the clamping element 51 is not clamped between the opposing walls 13 of the water container 05.

[0133] In the clamped state or when it is fixed to the water container 05, the clamping element 16 seals the gap 56 between the water container 05 and the sealing element 01 in the radial direction, so that no secondary air is drawn in, and the desired negative pressure is generated in the water container 05 through the smoking hose 20.

[0134] The clamping force can be set to be greater than the weight of the water container 05, thereby allowing the entire water pipe 99 to be safely lifted at the closure 98 without releasing the assembly. Advantageously, the connection between the water container 05 and the closure 98 is reversible and can be released again by reversing the radial direction of the diameter of the clamping element 16, for example by moving the displacement element 32 in the direction opposite to the compression direction. In the exemplary embodiment shown, the compression direction extends upward in the axial direction, while the direction opposite to the compression direction extends downward in the axial direction, but is not limited thereto.

[0135] like Figure 5a and Figure 5bAs shown, the first surface 80 of the displacement element 32 can be inclined relative to a surface perpendicular to the axial direction, for example, relative to the wall 13 of the water container 05, so that the radial change of the clamping element 16 is achieved due to the axial displacement of the displacement element 32. In this embodiment, the first surface 80 of the displacement element 32 is inclined toward the inner wall 13 of the water container 05, such that the upward axial displacement of the displacement element 32 extends the clamping element 16, increasing its inner diameter and causing the clamping element 16 to press against the inner wall 13 of the water container 05. Similar to the compression described above, the axial displacement causes a change in the diameter of the clamping element 16 in the radial direction, and thus a change in the clamping force that holds the closure 98 or the closure element 01 between the walls 13 of the water container 05. Alternatively or additionally, the second surface 81 of the closure element 01 can be inclined in this manner.

[0136] Figure 5a and Figure 5b The illustrated closing element 1 also includes a cylindrical portion 12 having a thread 39 (external thread in this exemplary embodiment), and the displacement element 32 includes a cylindrical portion 38 having a corresponding mating thread 39 (internal thread in this exemplary embodiment), configured such that the displacement element 32 and the closing element 01 can be displaced relative to each other in the axial direction due to rotational movement relative to each other. That is, the aforementioned axial displacement of the displacement element 32 occurs due to the rotation of the displacement element 32 relative to the closing element 01 about an axial rotation axis (A1). In this embodiment, the displacement element 32 may be, for example, a nut.

[0137] Will Figure 5a and 5b The closure 98 (or closure bottom 41) shown is fixed to the water container 05 by inserting the lower region of the closure 98 (including the clamping element 16 and the displacement element 32) into the neck 51 of the water container 05, such that a portion of the displacement element 01, for example, its outer region, contacts and frictionally contacts the inner wall 13 of the water container 05. When the closure element 01 rotates about a substantially axial axis of rotation (A1), the aforementioned portion prevents or reduces the co-rotation of the displacement element 01, resulting in the closure element 01 rotating relative to the displacement element 32. This relative rotation causes a relative displacement in the axial direction between the displacement element 32 and the closure element 01, and the clamping element 16 is compressed as described above if a corresponding direction of rotation is provided.

[0138] To increase frictional contact, the displacement element 32 (particularly the area where the displacement element 32 contacts the wall 13 of the water container 05) can be made of a material that increases friction relative to the wall of the water container 05, such as nitrile rubber (NBR), or coated with such a material. In this case, the displacement element 32 is advantageously formed with a flexible diameter to compensate for the high tolerances of the glass. For this purpose, the displacement element 32 may include a friction element 70 that does not require significant force to insert into or pull out of the closure 98, but generates sufficient radial friction. For example, such a friction element 70 can be formed as an annular NBR edge ( Figure 6 a) Ring-shaped foam rubber ( Figure 6 b) or the O-ring in the V-groove ( Figure 6 c). Friction element 70 does not need to be sealed.

[0139] Co-rotation of the displacement element 32 can also be selectively prevented by frictional contact between the clamping element 16 and the displacement element 32 and by frictional contact between the clamping element 16 and the inner wall 13 of the water container 05. Here, it is advantageous to further prevent friction between the clamping element 16 and the closing element 01, for example, friction between the clamping element 16 and the second surface 81 of the closing element 01 (opposite to the first surface 80 of the displacement element 32), thereby preventing or reducing co-rotation of the clamping element 16 and the closing element 01 about a substantially axial axis of rotation (A1). This can be achieved, for example, by introducing a friction-reducing element (e.g., a PTFE support ring (not shown)) or a friction-reducing coating. Due to the frictional contact between the clamping element 16 and the displacement element 32 and the reduced frictional contact between the clamping element 16 and the closing element 01, the displacement element 32 rotates relative to the closing element 01 when the closing element 01 rotates and when the clamping element 16 frictionally contacts the inner wall 13 of the water container 05, and a relative displacement in the axial direction is generated between the displacement element 32 and the closing element 01. The clamping element 16 may be made of NBR, for example, and may be a resilient sealing ring, for example.

[0140] In order to make the clamping element 16 and / or the displacement element 32 contact the inner wall 13 of the water container 05, after the lower region of the closure is introduced into the water container 05, it may be necessary to tilt the closure 98 slightly relative to the axial direction at the start of the rotational movement.

[0141] Figure 7 An exemplary embodiment is shown, in which the following is used Figure 5a and Figure 5b The closure 98 or the bottom 41 of the closure differs in that a groove 31 is provided in the inner wall 13 of the water container 05, which is configured such that the clamping element 16 additionally engages with the groove 31 in the clamping state. The groove 31 may be a circumferential groove 31.

[0142] According to the invention, the closure 98 or the bottom 41 of the closure Figure 8a and 8b The second exemplary embodiment shown corresponds substantially in structure and function to the exemplary embodiment described with reference to FIG. 5. For the sake of avoidance of repetition, please refer to the description given in FIG. 5. Figure 8a , Figure 8b As shown, the bottom 41 of the closure can be integrally formed with the upper part 42 of the closure. However, the embodiment is not limited to this. The difference is that the closure element 01 has an internal thread instead of an external thread, and the displacement element 33 has an external thread instead of an internal thread. In addition, the clamping element 36 is disposed at the axially extending portion 38 of the displacement element 33, such that the displacement element 36 overlaps with the portion 38 in the radial protrusion.

[0143] Furthermore, the closing element 01 is configured such that it can be excluded from the water container 05. Instead, the upper region of the displacement element 33 protrudes from the water container 05 in its fixed state and is movably fixed to the lower region of the closing element 01 in a helical shape around the axis of rotation A1 by threads 39. However, the embodiment is not limited to this, and the closing element 01 may also include a region protruding into the water container 05 in its fixed state. The displacement element 33 may be, for example, a clamping sleeve. As the closing element 01 rotates relative to the displacement element 33 about the axis of rotation A1, the first surface 80 of the displacement element 33 approaches the second surface 81 of the closing element 01, and the clamping element 36 is compressed, causing it to change (deform) in the radial direction and generate a clamping force. Figure 8a The closure 98 is shown in the open state, with the clamping element not compressed. Figure 8b The closure 98 is shown in a clamped state, wherein the clamping element 36 is compressed.

[0144] Figure 9 The third exemplary embodiment of the closure 98 or the closure bottom 41 according to the invention shown herein substantially corresponds to reference to FIG5 and Figure 6 For the exemplary embodiments described, please refer to the description given above to avoid repetition. Figure 9As shown, the bottom 41 of the closure can be integrally formed with the upper part 42 of the closure. However, the embodiment is not limited to this. A clamping element 36 is disposed at a portion 38 of the displacement element 34, and the clamping element 36 extends in the axial direction such that the clamping element 36 overlaps with the portion 38 in the radial protrusion. However, the difference is that the closure element 01 and the displacement element 34 are configured not to have the aforementioned thread 39. That is, in order to change the diameter of the clamping element 36 in the radial direction, the axial displacement of the displacement element 34 relative to the closure element 01 is merely a translational action, that is, it does not include a rotational component. The displacement element 34 can be displaced in the axial direction relative to the closure element 01 by means of an operating rod 35 (as an example of an operating element) fixed to the upper surface 30 of the closure element 01 and connected to the displacement element 34 through the closure element 01. In this embodiment, it may be beneficial to reduce the friction between the inner wall 13 of the water container 05 and the displacement element 34. Within the axially extending portion 38 of the displacement element 34, the clamping element 36 overlaps with this portion 38 in a radially protruding portion, and the outer diameter of the displacement element 34 decreases in the direction of the closing element 01 (i.e., upward). In this way, when the clamping element 36 transitions from a region with a smaller outer diameter to a region with a larger outer diameter during axial displacement, the radial unfolding of the clamping element 36 can be achieved in addition to the compression of the displacement element 34 during axial displacement relative to the closing element 01.

[0145] Figure 10 The fourth exemplary embodiment of the closure 98 or the closure bottom 41 according to the invention shown substantially corresponds to reference to FIG5 and Figure 7 The exemplary embodiments described herein are illustrated below; for the sake of avoiding repetition, please refer to the description given therein. For example... Figure 10As shown, the bottom 41 of the closure can be integrally formed with the upper 42 of the closure. However, the embodiment is not limited to this. A clamping element 16 is disposed at the axially extending portion 12 of the closure element 01, such that it overlaps with the portion 12 in the radial protrusion. The displacement element 32 has an internal thread, while the closure element 01 has an external thread. The thread 39 extends in the axial direction. In its fixed state to the water container 05, the radially extending portion of the displacement element 01 rests on the neck 51 of the water container 05, and the axially extending portion extends into the water container 05. Contrary to the exemplary embodiment described in FIG. 5, the first surface 80 of the displacement element 32 is oriented downward (i.e., in the direction of the bottom of the water container 05), and the second surface 81 of the closure element 01 opposite to the first surface 80 is oriented upward (i.e., away from the bottom of the water container 05). Contrary to the exemplary embodiment described in FIG. 5, the first surface 80 is closer to the bottom of the water container 05 in the axial direction than the second surface 81. The position and size of the radially extending portion of the displacement element 51 are such that the user can hold the displacement element 01 from the outside (at the operating element 35), and thus prevent the displacement element 32 from rotating with the closing element 01. Therefore, frictional contact between the displacement element 32 and the wall 13 of the water container 05 to prevent mutual rotation is unnecessary.

[0146] Figure 11 The fifth exemplary embodiment of the closure 98 or closure bottom 41 shown according to the invention differs from the embodiments described above in that no displacement element is provided. Instead, the radially oriented clamping force generated by the clamping element 61 for clamping the closure element 01 between the opposing walls 13 of the water container 05 is based on the supplied compressed air. For example, compressed air may be supplied to the interior of the clamping element 61 via a valve 62, and thus the clamping element expands and thus changes, particularly increasing its diameter in the radial direction. Furthermore, the explanations given so far regarding the exemplary embodiments apply, and reference is made to them to avoid repetition. The clamping element 61 may, for example, be a diaphragm subjected to the impact of compressed air. As in the embodiments described above, the closure bottom 41 may be integrally provided with the closure upper portion 42, and the clamping element 61 is disposed at the axially extending portion 12 of the closure element 01 such that it overlaps with this portion 12 in a radial protrusion.

[0147] Figure 12 The sixth exemplary embodiment of the closure 98 or closure bottom 41 according to the invention shown herein substantially corresponds to Figure 11The embodiment described herein is illustrated with reference to the description given therein. The difference lies in that the clamping element 61 includes an elastic element 64, such as a spring, configured to achieve radial deformation of the clamping element 61, and a ventilation device 63 for reducing the primary pressure in the clamping element 61. For example, the elastic element 64 radially outwardly presses against the outer wall of the clamping element 61, thereby generating a clamping force in its fixed state to the water container 05. This force is counteracted by a pressure reduction in the clamping element 61 achieved by means of the ventilation device 63. The clamping force can be set by controlling the pressure in the clamping element 61. In this embodiment, a displacement element may also be omitted.

[0148] Figure 13a The seventh exemplary embodiment of the closure 98 or closure bottom 41 according to the invention shown substantially corresponds to the preceding exemplary embodiments, and for the sake of avoiding repetition, please refer to the description given therein. The clamping element 16 is formed in a wedge or V-shape in cross-section and is disposed at the axially extending portion 12 of the closure element 01 such that it overlaps with the portion 12 in a radial protrusion. The wedge point points downward in the axial direction. In other words, the clamping element 16 is configured such that its outer diameter increases axially from bottom to top. In the thinner portion of the clamping element 16, the outer diameter is smaller than the inner diameter of the neck 51 of the water container 05, and in its thicker portion, the outer diameter is larger than the inner diameter of the neck 51 of the water container 05. Therefore, the clamping element 16 can be easily introduced into the water container 05, and then, when the outer diameter becomes larger than the inner diameter of the neck 51, a clamping effect is produced that secures the closure 98 or closure bottom 41 within the water container (see...). Figure 13a Especially in the case of the V-shaped clamping element 16, retraction becomes more difficult due to the resulting hook effect. Therefore, the closure 98 or closure element 41 provides a displacement element 34, by means of which the outer diameter can be changed in the radial direction due to the axial displacement of the displacement element 34. The upward displacement achieves a reduction in the outer diameter, thereby offsetting the clamping force, and the closure 98 or the bottom of the closure 41 can be removed from the water container again (see...). Figure 13b ).

[0149] Figure 14aThe eighth exemplary embodiment of the closure 98 or closure bottom 41 according to the invention shown substantially corresponds to the closure 98 or closure bottom 41 described with respect to FIG. 5, for the avoidance of repetition, please refer to the description given therein. An open state is shown. The difference with closure 98 is that the closure bottom 41 is not integrally formed with the closure top 42. Instead, the closure top 42 and the closure bottom 41 are detachably connected to each other by a connecting device 72. The closure bottom 41 includes a closure element 01, and the closure top 42 includes a second closure element 02. The second closure element 02 includes at least one communicating opening 19 for at least one cigarette hose 20 and at least one continuous first groove 27 for a ventilated connection between the water container 05 and the communicating opening 19. The closure element 01 and the second closure element 02 are configured such that they can be plugged into and / or threadedly connected to each other. For this purpose, the closing element 01 has a substantially cylindrical portion 66 at its upper end (i.e., the end facing the second closing element 02), and the second closing element 02 has a substantially cylindrical portion 67 at its lower end (i.e., the end facing the closing element 01). The outer diameter of the substantially cylindrical portion 67 of the second closing element 02 is slightly smaller than the outer diameter of the cylindrical portion 66 of the closing element 01, allowing them to be inserted into each other. Furthermore, a threaded device 71 with mating threads is provided at the substantially cylindrical portions 66 and 67, allowing the closing element 01 to be threadedly connected to the second closing element 02. The cylindrical portion 66 of the closing element 01 has internal threads, and the cylindrical portion 67 of the second closing element 02 has external threads. For example, a bayonet mount can be used instead of the threaded device 71.

[0150] exist Figure 14b In the diagram, the bottom 41 of the closure does not have the upper part 42 of the closure in a clamping state.

[0151] Figure 15 The ninth exemplary embodiment of the closure 98 or closure bottom 41 according to the invention shown substantially corresponds to the exemplary embodiment described with respect to FIG. 14, for the avoidance of repetition, please refer to the description given therein. The only difference is the connecting device 72. The connecting device is configured such that the closure element 01 and the second closure element 02 can rotate arbitrarily relative to each other. Instead of the threaded device 71, a circumferential groove (or notch) 68 is provided at the substantially cylindrical portion 66 of the closure element 01 and / or at the substantially cylindrical portion 67 of the second closure element 02, where a blocking element 69, such as an O-ring, retaining ring, flathead screw, or pin, is provided, which is configured such that axial displacement of the closure element 01 relative to the second closure element 02 is prevented by positive engagement, while maintaining the axial rotatability of the closure element 01 about the axis of rotation of the closure element 02.

[0152] Several modifications may be made to the exemplary embodiments described herein.

[0153] In the above embodiment, the closure element 01 is clamped between the opposing inner walls 13 of the water container 05. However, the invention is not limited thereto. Alternatively, the neck 51 of the water container 05 may also be clamped between the two opposing walls of the closure element 01. In this case, the clamping element is configured to generate a clamping force that is radially inward toward the outer wall of the neck 51 of the water container 05. In this case, the clamping element typically has an inner diameter slightly larger than the outer diameter of the neck 51 of the water container 05, and the change in the diameter of the clamping element is radially inward. That is, a change in the radial direction can correspond to a decrease in the inner diameter of the clamping element.

[0154] In the closure 98 shown in Figures 5 to 13, the bottom 41 of the closure is integrally formed with the upper part 42 of the closure. However, the embodiment is not limited to this; as shown in Figures 14 and 15, the bottom 41 of the closure may be separately provided from the upper part 42 of the closure. Furthermore, Figures 14 and... Figure 15 The bottom 41 of the closure shown can also alternatively be provided with a reference. Figures 6 to 1 The clamping device 97 described in 3.

Claims

1. A closure bottom (41) of a substantially rotationally symmetric water container (05) for a water pipe (99), comprising a first closure element (01) extending in an axial direction and having a continuous opening (22) in the axial direction, characterized in that, The bottom of the closure (41) includes a clamping device (97) having circumferential clamping elements (16; 36; 61) that are radially variable. These clamping elements (16; 36; 61) are configured to generate a radially directed clamping force when fixed to the water container (05) to clamp the bottom of the closure (41) between opposing walls (13) of the water container (05), or to clamp the water container (05) between opposing walls (14) of the bottom of the closure (41). 3) between; wherein the clamping force is based on the change in the diameter of the clamping element (16; 36; 61) in the radial direction; the bottom of the closure (41) further includes a displacement element (32; 33; 34) which is capable of being displaced in the axial direction relative to the first closure element (01), the displacement element (32; 33; 34) being configured to change the clamping element (16; 36) in the radial direction due to the axial displacement of the displacement element (32; 33; 34) relative to the first closure element (01).

2. The bottom (41) of the closure according to claim 1, characterized in that, The closing element (1) has a cylindrical portion (12) with threads (39), the displacement elements (32; 33) have cylindrical portions with corresponding mating threads (39), and they are configured such that the displacement elements (32; 33) and the first closing element (01) can be displaced relative to each other in the axial direction due to rotational movement relative to each other.

3. The bottom (41) of the closure according to claim 2, characterized in that, The displacement element (32) has an internal thread, and the cylindrical portion (12) of the first closing element (01) has an external thread.

4. The bottom (41) of the closure according to claim 2, characterized in that, The displacement element (32) has an external thread, and the cylindrical portion (12) of the first closing element (01) has an internal thread.

5. The bottom (41) of the closure according to claim 1, characterized in that, It also includes an operating element (35) connected to the displacement element (33; 34).

6. The bottom (41) of the closure according to claim 1, characterized in that, It also includes a valve (62) for supplying compressed air to the clamping element (61), the valve (62) being configured such that the supply of compressed air causes a change in the diameter of the clamping element (61).

7. The bottom (41) of the closure according to claim 1, characterized in that, The clamping element (61) includes an elastic element configured to achieve radial change of the clamping element (61) and a ventilation device (63) for reducing the main pressure in the clamping element (01).

8. The bottom (41) of the closure according to claim 7, characterized in that, The elastic element is a spring element (64).

9. The bottom (41) of the closure according to claim 1, characterized in that, The clamping element (16; 36; 61) is a sealing element, which is also configured to seal the gap (56) between the water container (05) and the first sealing element (01) in the radial direction when it is fixed to the water container (05).

10. The bottom (41) of the closure according to claim 2, characterized in that, The clamping element (16) is disposed at the portion (12) of the first closing element (01) extending in the axial direction, such that it overlaps with the portion (12) in the radial protrusion.

11. The bottom (41) of the closure according to claim 1, characterized in that, The clamping element (36) is disposed at the axially extending portion (38) of the displacement element (33; 34) such that it overlaps with the portion (38) in the radial protrusion.

12. The bottom (41) of the closure member according to any one of claims 1-11, characterized in that, The bottom (41) of the closure has a connecting device (72) at its end opposite to the clamping device (97) in the axial direction for connecting the upper part (42) of the closure.

13. A closure (98) for a substantially rotationally symmetrical water container (05) for a water pipe (99), comprising a closure bottom (41) according to any one of claims 1-12 and a closure upper portion (42) fixed to an end of the closure (98) opposite to the clamping device (97) along the axial direction; wherein, The upper part (42) of the closure includes a second closure element (02), a continuous opening (22) for a flue (06), at least one connecting opening (19) for at least one flexible flue (20), and at least one continuous first groove (27) for a breathable connection between the water container (05) and the connecting opening (19); wherein the second closure element (02) has a substantially cylindrical portion (67), the first closure element (01) has a substantially cylindrical portion (66), the first closure element (01) and the second closure element (02) are inserted into each other and are configured such that axial displacement of the first closure element (01) relative to the second closure element (02) is prevented by positive engagement, while maintaining 360° rotatability of the first closure element (01) relative to the second closure element (02).

14. The closure (98) according to claim 13, characterized in that, The cylindrical portion (66) of the first closure element (01) and / or the cylindrical portion (67) of the second closure element (02) include a circumferential groove (68), in which an axial blocking element (69) is fitted.

15. A water pipe having a substantially rotationally symmetrical water container (5) and a closure (98) according to claim 13 or 14.

16. The water pipe according to claim 15, characterized in that, One wall (13) of the water container (05) includes a groove (31) for receiving the clamping element (16; 36; 61).

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