Pull-out hose guiding device and sanitary shower

Abstract

1. Pull-out hose guide device and sanitary shower. 2.1. The invention relates to a pull-out hose guide device for guiding a pull-out hose (1) with a hose bend (1b) of variable hose bend length, in particular a pull-out hose of a sanitary shower, comprising a stationary device part (3), a guide roller arrangement (4) which is guided translationally on the stationary device part in a hose bend length direction (SLR) and which has a guide element that is guided translationally on the stationary device part, and a guide roller that can be inserted into a bend reversal area of ​​the hose bend (1a), and a retraction device coupled to the guide roller arrangement (4) which includes a spring return unit. 2.2. According to the invention, the retraction device comprises a retraction element (9) which can be wound onto the spring return unit and unwound and wound up with a variable portion of its length.The spring return unit is translationally coupled to the guide roller assembly (4), and the retraction element (9) is fixed to the stationary device part by a fastening section (9a). 2.3. Use e.g. for bathtub hand showers and kitchen pull-out showers. 3. Fig. 4.

Description

[0001] The invention relates to a pull-out hose guide device for guiding a pull-out hose with a hose bend of variable length, in particular a sanitary pull-out hose, wherein the pull-out hose guide device comprises a stationary device part, a guide roller arrangement guided on the stationary device part for translational movement in a hose bend length direction, and a retrieval device coupled to the guide roller arrangement. The guide roller arrangement has a guide part that is guided on the stationary device part for translational movement, and at least one guide roller that can be inserted into a bend reversal region of the hose bend. The retrieval device includes a spring retraction unit, i.e., a unit that provides a spring retraction force, ieA spring force for retracting a retractable object coupled to it, such as, more specifically, for retracting the guide roller assembly and thus the extension hose or an element connected to it. In the case of the sanitary extension hose, a corresponding sanitary fixture, particularly one that discharges water, can be coupled to it, such as a sanitary water outlet fitting or a sanitary shower head unit.

[0002] The invention also relates to a sanitary shower with a shower head unit, a pull-out hose to which the shower head unit is coupled, and a pull-out hose guide device of the type mentioned above for guiding the pull-out hose.

[0003] Such a pull-out hose guide device can be used, for example, to guide a pull-out hose of a pull-out hand shower on a bathtub, in a shower, or on a vanity unit, or a pull-out hose of a kitchen pull-out shower unit. The pull-out hose can be pulled out by the user from a retracted position to an extended position and then automatically returns from the extended to the retracted position if the user permits this return movement. By pulling out or retracting the pull-out hose, the hose bend changes its length accordingly. For the automatic retraction of the pull-out hose from the extended to the retracted position, the return device is configured to exert a necessary tensile force on the guide roller arrangement in the direction of the retracted position of the pull-out hose.

[0004] The guide roller arrangement is guided on the stationary device part in a translationally movable manner in the hose bend length direction, ie the stationary device part has guide means which allow a translational movement of the guide roller arrangement and prevent the guide roller arrangement from moving in other directions.

[0005] The published patent application EP 3 647 503 A1 shows a pull-out hose guide device with a retrieval device in the form of a spring retraction roller, which is coupled to the pull-out hose via a retrieval cord which can be wound up and unwound with a variable part of its length wound onto the spring retraction roller.

[0006] Various other designs for the retraction device are already known, e.g., in the form of a loose roller inserted into a bend of the retractable hose, capable of translational movement counter to a weight and / or spring force. For example, utility model DE 20 2005 019 492 U1 discloses a retractable hose guide device of the type mentioned above, in which a shower hose is accommodated in a housing to form a bend, with a guide roller rotatable about an axis inserted into a bend reversal area of ​​the shower hose. The axis is slidably guided in two parallel guide grooves, and a mechanical tension spring can be provided to generate preload and ensure that the shower hose is pulled into its fully retracted position without counterforce.

[0007] Patent EP 3 394 353 B1 discloses a pull-out hose guide device of the type mentioned above, which is designed to guide a U-shaped, downwardly hanging hose bend of variable length, in particular a hose bend of a pull-out hose of a sanitary fitting. The device has a hose guide box open at the top for receiving the hose bend in a rotationally secured manner. A guide weight roller is provided that can be rotatably inserted into the hose bend and is coupled to the hose guide box via a guide tension spring. The guide tension spring exerts a return spring force in the direction of a predetermined hose bend starting position.

[0008] The published patent application CN 110440043 A shows a pull-out hose guide device with a movable pulley that is inserted into a U-shaped bend of a pull-out hose resting horizontally on a support surface. A clockwork spring arranged in a housing is connected to the pulley via a connecting piece. The clockwork spring exerts a return spring force on the pulley via the connecting piece.

[0009] The published patent application US 2017 / 0356170 A1 shows a pull-out hose guide device with a first pulley that is inserted into a U-shaped, downward-hanging hose bend of a pull-out hose, and a second pulley that is connected to the first pulley via a connecting part, axially offset from the latter. A roller spring with a constant restoring force is coupled at a first end to the second pulley, so that the roller spring wraps around the second pulley, and at a second end to a stationary component. The first pulley is not guided in its movement; due to the elasticity of the roller spring, it can twist and / or tilt to a corresponding extent, for example, with the hose bend.

[0010] Published application WO 2021 / 191609 A1 discloses a pull-out hose guide device comprising a housing and a hose reel rotatably mounted therein, onto which a pull-out hose for a shower head can be wound or from which the hose can be unwound. The hose reel is pretensioned in the winding direction by a spiral spring, so that the hose is automatically wound up when the user releases it again after unwinding it from the hose reel or pulling it out of the housing.

[0011] The invention is based on the technical problem of providing a pull-out hose guide device and a sanitary shower equipped therewith, which offer advantages over the above-mentioned prior art, in particular with regard to structure, functioning, assembly and / or handling.

[0012] The invention solves this problem by providing a pull-out hose guide device with the features of claim 1 and a sanitary shower with the features of claim 10. Advantageous developments of the invention are specified in the subclaims.

[0013] In the retractable hose guide device according to the invention, the retraction device includes a retraction element that can be wound and unwound with a variable portion of its length wound onto the spring retraction unit. The spring retraction unit is translationally coupled to the guide roller assembly, i.e., a translational movement of the guide roller assembly causes a translational movement of the spring retraction unit in the same direction. The retraction element is fixed to the stationary part of the device by a fastening section.

[0014] The spring retraction unit provides a spring force acting counter to the unwinding movement and thus in the winding direction on the retraction element. By fixing the retraction element with its fastening section to the stationary device part, it transfers the restoring force of the spring retraction unit as a tensile force to the guide roller assembly translationally coupled to the spring retraction unit and thus to the extension hose inserted therein in the direction of its retracted position. The retraction element is unwound by the spring retraction unit as the extension hose is pulled out. Accordingly, the pull-out force required by the user to pull out the hose can be adjusted to a desired level by selecting a corresponding spring preload of the spring retraction unit.

[0015] Due to this special design of the guide roller arrangement, the pull-out hose guide device according to the invention offers advantages over conventional pull-out hose guide devices with regard to design, functionality, ease of assembly, and / or handling. For example, due to its special retraction mechanism, this pull-out hose guide device can be installed in any desired position, i.e., with any spatial orientation and, in particular, independently of the direction of gravity, e.g., on a washbasin or kitchen sink. A guide weight roller is not absolutely necessary or can be designed as a relatively lightweight guide roller that primarily fulfills a guiding function. As a result, the overall weight of the pull-out hose guide device can be kept relatively low, which facilitates transport and assembly and can also be functionally advantageous.The hose holding force required by the user to hold the extendable hose at a desired extension length can be reduced by the static friction force of the guide roller assembly compared to the hose extension force required to extend the extendable hose to this desired extension length. If necessary, the static friction force can be specifically specified or adjusted by appropriately designing the guide roller assembly. This makes the operation of the extendable hose guide device, and in particular of a shower unit connected to the extendable hose, more comfortable.

[0016] The use of the retraction element has the advantage that the retraction unit can be constructed comparatively compactly and / or with little effort, making it suitable even for confined spaces in the extension hose guide device. The retraction element can be, for example, a retraction cord, a retraction rope, a retraction thread, a retraction wire, a retraction strap, a retraction chain, etc., and can, if required, be provided with a comparatively small cross-section or small transverse dimension and / or with no or only minimal inherent rigidity, so that it does not interfere with the movement of the extension hose. On the other hand, it can reliably transmit the spring force provided by the spring retraction unit as a tensile force to the guide roller assembly in order to automatically retract the extension hose.

[0017] InIn a further development of the invention, the guide part has a roller bearing on which the guide roller is mounted so as to be rotatable about a guide roller rotation axis. This represents a structurally and functionally advantageous implementation for the desired extension or retraction of the extension hose. The roller bearing can be formed integrally with the guide part. The hose holding force required by the user can be reduced compared to the hose extension force required by the user, among other things, by the static friction force between the guide roller and the roller bearing. In alternative embodiments, the guide roller can be mounted on the guide part so as to be fixed against rotation, with the extension hose sliding along a circumferential side of the guide roller during extension or retraction.In this case, the hose holding force to be applied by the user can be reduced compared to the hose extraction force by, among other things, the static friction force between the guide roller and the adjacent hose bend.

[0018] In a further development of the invention, the guide part has a winding bearing on which a winding region of the spring retraction unit is rotatably mounted about a winding rotation axis. This realizes an advantageously simple and functionally reliable winding and unwinding movement of the spring retraction unit from the retraction element. The winding region is designed so that the retraction element unwinds from it during the unwinding movement of the spring retraction unit, i.e. when the extension hose is pulled out of the extension hose guide device, and winds itself onto it during the winding movement of the spring retraction unit, i.e. when the extension hose is pulled into the extension hose guide device. The winding bearing can be formed as one piece with the guide part or prefabricated as a separate component. In a functionally and structurally advantageous embodiment, the winding rotation axis is identical to a guide roller rotation axis of the guide roller.

[0019] In one embodiment of the invention, the guide part is guided on the stationary device part in a rotationally fixed manner, and the spring retraction unit has a receiving body that is rotationally coupled to the guide roller or held so as to be rotatable relative to it, and a spiral spring. "Rotationally coupled" here means that a rotational movement of the guide roller causes a rotational movement of the receiving body in the same direction. The receiving body includes the winding region and a spring receiving region that receives the spiral spring. The spiral spring is connected to the guide part in a rotationally fixed manner by a first, radially inner or outer end region and is connected to the receiving body in a rotationally fixed manner by a second, radially outer or inner end region. This represents a spring retraction unit that is relatively easy to manufacture, can be constructed compactly, and provides advantageous retraction functionality for the extension hose.The spring preload of the coil spring can be individually adjusted. These measures enable the restoring force of the spring retraction unit to be transmitted as a tensile force to the guide roller arrangement translationally coupled to the spring retraction unit and thus to the extension hose inserted therein in the direction of its retracted position in a structurally and functionally advantageous manner. The receiving body can, for example, have a cylindrical, preferably annular, cross-section. The winding region can preferably be arranged on a jacket surface or an outer circumference of the receiving body. The spring receiving region can preferably be circumferentially surrounded by a jacket surface of the, in this respect, cylindrical receiving body, so that the coil spring received therein is also surrounded by the jacket surface.

[0020] InIn further embodiments of the invention, the receiving body is designed in one piece with the guide roller or as a component separate from the guide roller, which is connected to the guide roller in a rotationally fixed, preferably detachable, manner or is arranged such that it can rotate relative to it, e.g., it can rotate freely. Additionally or alternatively, in a further embodiment of the invention, the receiving body is arranged coaxially to the guide roller. These measures each realize an advantageously simple and functionally reliable transmission of the restoring force of the spring return unit to the guide roller. In this case, a jacket surface of the receiving body and a jacket surface of the guide roller can optionally be arranged in a common plane. In addition, the winding rotation axis of the winding area can optionally be identical to a guide roller rotation axis of the guide roller.

[0021] InIn a further embodiment of the invention, the winding area surrounds the spring receiving area circumferentially. This represents a structurally advantageous implementation for the desired function of the receiving body and a particularly compact design of the guide roller arrangement. In an alternative embodiment of the invention, the winding area is arranged axially offset from the spring receiving area, which can be advantageous for corresponding applications.

[0022] In a further development of the invention, the stationary device part has a hose guide box which is designed to receive the hose bend in a position sagging towards the inside of the box in a manner secured against rotation, the guide part being translationally movable outwards in the direction of the hose bend length as the hose bend length decreases and inwards in the box as the hose bend length increases. In addition to receiving the hose bend in a manner secured against rotation, the hose guide box serves to guide the same, preferably in that a guide section of the guide part of the guide roller arrangement is guided on an inner side of the hose guide box. The hose guide box is open on its hose insertion side, i.e. the side on which the pull-out hose is guided into the box and out again from it, so that the hose bend can protrude into the hose guide box through this open hose insertion side.On all other sides, the hose guide box can be fully or partially open as required, or closed, for example to protect against water leaks. Furthermore, the hose guide box can be cuboid-shaped, but any other box shapes are also possible, particularly those that ensure that the hose bend cannot twist in the hose guide box. The hose entry side can be at the top when the box is in use, i.e. in an upright installation position with the hose bend hanging vertically downwards, it can form the top of the box. Alternatively, the box can also be arranged in any other spatial orientation, e.g. in a horizontal installation position, i.e. with the hose bend oriented horizontally, or in an overhead position with the hose entry side facing downwards or in an installation position that is inclined relative to the box.

[0023] InIn alternative embodiments, the stationary device part has, instead of the said box, only a stationary guide rail which is designed to receive and guide the guide part of the guide roller arrangement in a rotationally secured manner and can be fastened, for example, to a vanity unit or the like.

[0024] InIn one embodiment of the invention, the retraction element is fixed with its fastening section to a fixing area of ​​the hose guide box, in particular to a front side area of ​​the hose guide box. This measure allows the pull-out hose guide device to be realized in a particularly compact manner. Furthermore, the pull-out hose guide device can be installed quickly and easily. The fixing area preferably has a fixing part that is releasably attached to the hose guide box. In alternative embodiments, the retraction element is fixed with its fastening section, for example, to a stationary part of a sanitary washbasin or sink unit or the like.

[0025] In a further development of the invention, the guide roller forms a base body that at least partially accommodates the return mechanism, and the guide part forms a cover body that is placed on the base body and at least partially covers the return mechanism. This represents a structurally and functionally advantageous implementation of the guide roller arrangement. The guide part is preferably disc-shaped and detachably attached to the guide roller. In a functionally and structurally advantageous embodiment, the guide part completely covers the return mechanism.

[0026] The sanitary shower head according to the invention comprises a shower head unit, a pull-out hose to which the shower head unit is coupled, and a pull-out hose guide device according to the invention for guiding the pull-out hose. This sanitary shower head thus takes advantage of the advantageous properties of this pull-out hose guide device.

[0027] Advantageous embodiments of the invention are illustrated in the drawings. These and other embodiments of the invention are explained in more detail below. In the drawings: Fig. 1 a schematic perspective view of a sanitary washbasin or sink unit with an inventive pull-out hose guide device with hose guide box with retracted pull-out hose, Fig. 2 the view of Fig. 1 with the pull-out hose extended, Fig. 3 a perspective detailed view of the pull-out hose guide device, with a lower part of the hose guide box partially cut away, Fig. 4 the pull-out hose guide device of Fig. 1 in a perspective exploded view in a design with retraction element, guide roller and with this rotationally coupled receiving body for the retraction element, Fig. 5 the exploded view of Fig. 4in a different perspective, Fig. 6 a perspective detailed view of a guide roller arrangement and a retrieval device of the pull-out hose guide device, Fig. 7 a perspective exploded view corresponding Fig. 4 for an embodiment of the pull-out hose guide device with retraction element, guide roller and relative to this rotatable receiving body for the retraction element, Fig. 8 the view of Fig. 7 with retraction element and spiral spring of the spring retraction unit arranged on the receiving body, Fig. 9 a perspective exploded view corresponding Fig. 5 for the execution of the pull-out hose guide device of Fig. 7 and Fig. 10 a schematic perspective view of a use of an extension hose guide device according to the invention in an embodiment with several guide rollers in a bathtub side area.

[0028] As is clear from the exemplary embodiments shown in the figures, the pull-out hose guide device according to the invention comprises a stationary device part 3, a guide roller arrangement 4 guided on the stationary device part 3 in a hose bend length direction SL R so as to be translationally movable, and a retrieval device 7 coupled to the guide roller arrangement 4. The pull-out hose guide device is designed to guide a pull-out hose 1 with a hose bend 1a of variable hose bend length, in particular a pull-out hose 1 of a sanitary shower 2. In the Fig. 1 to 6 a first embodiment of the invention is shown, in the Fig. 7 to 9 a second embodiment and in the Fig. 10 a third embodiment.

[0029] The guide roller arrangement 4 comprises a guide part 5, which is guided for translational movement on the stationary device part 3, and a guide roller 6, which can be inserted into a bend reversal area 1b of the hose bend 1a. The translational movement of the guide part 5 on the stationary device part 3 prevents unwanted evasive movements of the same transversely to the direction of translational movement. In an advantageous implementation, the guide part 5 is guided in a rotationally fixed manner on the stationary device part 3. The retraction device 7 includes a spring retraction unit 8 and a retraction element 9, which can be wound and unwound with a variable portion of its length onto the spring retraction unit 8 and is designed as a retraction cord 9' in the examples shown. In alternative embodiments, the retraction element 9 can be a retraction thread, a retraction cable, a retraction wire, a retraction strap, a retraction chain, etc.The spring retraction unit 8 is translationally coupled to the guide roller assembly 4. As a result, a translational movement of the guide roller assembly 4 results in a translational movement of the spring retraction unit 8 in the same direction. In the illustrated embodiments, the guide roller assembly 4 and the spring retraction unit 8 are coupled to one another in such a way that their translational movements are identical, as shown, for example, in FIGS. Fig. 1 and 2 Alternatively, this translational coupling can include a step-up or step-down gear.

[0030] The retraction element 9 is fixed to the stationary device part 3 by a fastening section 9a, as shown in Fig. 2can be seen. In advantageous embodiments, the guide part 5, as in the examples shown, has a through-opening 35 through which the retraction element 9 is passed. The through-opening 35 acts as a sort of cable catcher, which securely guides the retraction element 9 through the through-opening 35 without the retraction element 9 becoming jammed.

[0031] The pull-out hose guide device according to the invention can be used, for example, for a sanitary washbasin or sink unit for a bathroom washbasin or a kitchen sink, as shown schematically as an example in the Fig. 1 and 2The sanitary washbasin or sink unit comprises a washbasin or sink unit 15, a washbasin or sink unit substructure 16, a sanitary outlet fitting 17 associated with the washbasin or sink unit 15, and a sanitary shower 2 with a shower head unit 14, a pull-out hose 1, to which the shower head unit 14 is coupled, and the pull-out hose guide device according to the invention. In this example shown, the pull-out hose 1 is provided with an operator-side end region 1c, which contains the shower head unit 14, from a hollow fitting housing 17a of the outlet fitting 17 by a Fig. 1 shown retracted position into a Fig. 2 The extended position shown is extendable, as is familiar to the expert.

[0032] The pull-out hose 1 extends with the hose bend 1a of variable hose bend length in the washbasin or sink base 16, wherein the hose bend 1a in the example shown hangs vertically downwards under the washbasin or sink 15 in the base 16 along the hose bend length direction SL R, as shown in the Fig. 1 and 2 can be seen. In the present case, the guide roller 6 is inserted into the bend reversal area 1b of the hose bend 1a. The guide roller 6 is preferably provided with a guide groove 18 on its outer circumference. This secures the hose bend 1a, which surrounds the guide roller 6 over approximately half its circumference, against unintentional detachment from the guide roller 6, particularly during hose extension movements.

[0033] In another, in Fig. 10 In the illustrated use, the pull-out hose guide device according to the invention is arranged laterally on a bathtub or integrated into a bathtub panel, as in Fig. 10schematically indicated by a section of the upper edge of the bathtub 33.

[0034] As already mentioned and also from the Fig. 4 to 6 and 7 to 9 As can be seen, the pull-out hose guide device comprises the retrieval device 7 coupled to the guide roller arrangement 4. The pull-out hose 1 can thus be pulled back by a user by appropriate actuation from a retracted position, such as in Fig. 1 shown, in an extended position, such as in Fig. 2 shown, extendable and automatically, ie without the user being required to exert a corresponding return movement force, retractable or returnable from the extended position into the retracted position, as is known to the person skilled in the art from conventional pull-out hose guide devices.

[0035] The retrieval device 7 is designed to exert a required tensile force FZ on the guide roller arrangement 4 in the direction of the retracted position of the extension hose 1, ie a retrieving force with a force component parallel to the hose bend length direction SL R , as in the Fig. 2can be seen. For this purpose, the retrieval device 7 comprises the spring retraction unit 8 and the retraction element 9, which is wound onto the spring retraction unit 8 with a variable part of its length so that it can be wound up and unwound. The spring retraction unit 8 can be designed such that it has a desired characteristic for the retracting spring force it provides as a function of the extension length of the retraction element 9, e.g. a constant restoring force or a restoring force that increases or decreases at least in some areas with increasing extension length of the retraction element 9. In addition, the hose holding force required by the user to hold the extension hose 1 at a desired extension length can be reduced by the static friction force of the guide roller arrangement compared to the hose extension force required by the user to extend the extension hose 1 to this desired extension length.

[0036] In advantageous embodiments, as in the examples shown, the guide part 5 has a roller bearing 10 on which the guide roller 6 is rotatably mounted about a guide roller rotation axis FR A, as in the Fig. 5 , 7 and 9 For this purpose, the guide roller 6 has a central bore 19, with which it is attached to the roller bearing 10. The hose holding force required by the user can be reduced by the static friction force between the roller bearing 10 and the guide roller 6 compared to the hose extraction force required by the user.

[0037] In the embodiments shown, the guide part 5 has a guide device 20, with which the guide part 5 is guided in a translationally movable manner on the stationary device part 3. For this purpose, the stationary device part 3 has a guide device 21 complementary to the guide device 20, such as shown in Fig. 3can be seen. In an advantageous implementation, the guide part 5, as in the examples shown, is guided in a rotationally fixed manner on the stationary device part 3.

[0038] In a structurally advantageous embodiment, the guide part 5, as in the examples shown, has a winding bearing 10', on which a winding area 8a of the spring retraction unit 8 is rotatably mounted about a winding rotation axis SW A. The winding area 8a is designed so that the retraction element 9 unwinds therefrom during the unwinding movement of the spring retraction unit 8, i.e. when the extension hose 1 is pulled out of the extension hose guide device, and winds itself up thereon during the winding movement of the spring retraction unit 8, i.e. when the extension hose 1 is pulled into the extension hose guide device. In a functionally and structurally advantageous embodiment, the winding rotation axis SW A is identical to the guide roller rotation axis FR A of the guide roller 6, as shown, for example, in the Fig. 4 and 5 is evident.

[0039] In the versions shown, the roller bearing 10 and the winding bearing 10' are identical, as in the Fig. 5 , 7 and 9 can be seen. The roller bearing 10 or the winding bearing 10' is preferably an elongated, cylindrical body or axle stub, which, as a fixed axle, is connected on one side to the guide part 5 or is formed integrally therewith.

[0040] In the examples shown, the spring return unit 8 comprises a receiving body 11 and a spiral spring 12, as shown, for example, in the Fig. 4 to 6 and 7 to 9 In the example of the Fig. 3 to 6 the receiving body 11 is rotationally coupled to the guide roller 6, in particular the receiving body 11 and the guide roller 6 are connected to each other in a rotationally fixed manner. In the embodiment of the Fig. 7 to 9the receiving body 11 and the guide roller 6 are rotationally decoupled from each other, ie the receiving body 11 and the guide roller 6 can rotate independently of each other.

[0041] In the examples shown, the receiving body 11 includes the winding area 8a and a spring receiving area 11a receiving the spiral spring 12. The spiral spring 12 is connected to the guide part 5 in a rotationally fixed manner by a first, radially inner end area 12a and to the receiving body 11 in a rotationally fixed manner by a second, radially outer end area 12b. In the exemplary embodiments shown, the spiral spring 12 is connected to the roller bearing 10 or the winding bearing 10' in a rotationally fixed manner by the radially inner end area 12a. For this purpose, the roller bearing 10 or the winding bearing 10' has a spring retaining slot 22, as shown in the Fig. 5 and 9 is evident.

[0042] With the radially outer end region 12b, the spiral spring 12 is used in the realization of the Fig. 3 to 6 inserted into a spring retaining slot 23 on the receiving body 11 and thereby connected thereto, as shown in the Fig. 6 is evident. In the implementation of the Fig. 7 to 9 the spiral spring 12 engages with its radially outer end region 12b in an associated spring retaining slot 23 in the example of Fig. 3 to 6 corresponding recess 38, see Fig. 7 , on the receiving body 11. In an alternative embodiment, the spiral spring 12 is connected to the receiving body 11 in a rotationally fixed manner with a radially outer end region 24 in another way, e.g., force-locking. The spiral spring 12 exerts a preload force or an associated torque on the rotatable receiving body 11 in a direction corresponding to an unwinding rotation direction DR, as in Fig. 6 specified, opposite winding direction of rotation.

[0043] As in the Figs. 7 and 8As can be seen, in this exemplary embodiment the receiving body 11 has a retaining web structure which is formed from a plurality of axial webs 23' arranged preferably equidistantly in the circumferential direction on an inner circumference of the receiving body 11. A locking screw (not shown) can engage in the spaces between any two adjacent axial webs 23' so that the spiral spring 12 cannot unscrew when it is inserted in a pre-tensioned state into the receiving body 11 for assembly and the latter is placed onto the roller or winding bearing 10, 10' of the guide part 5. For this purpose, the locking screw can be screwed into an opening 39 formed on the guide part 5. After assembly, the locking screw can then be unscrewed from this opening 39 so that the receiving body 11 can rotate relative to the guide part 5, as required during operation of the pull-out hose guide device.

[0044] When the user pulls out the pull-out hose 1 from the pull-out hose guide device, the receiving body 11 with the winding area 8a is moved translationally against the hose bend length direction SL R. Since the retraction element 9 wound on the receiving body 11 is fixed with its fastening section 9a to the stationary device part 3, the retraction element 9 is forced to unwind from the receiving body 11 during the translational movement of the latter. This results in a rotational movement of the receiving body 11 in the unwinding rotation direction DR and in the example of the Fig. 3 to 6an identical rotary movement of the guide roller 6, which is non-rotatably coupled to the receiving body 11, whereby the latter can also be brought about by a corresponding rolling movement of the guide roller 6 on the hose bend 1a. Due to the rotary movement of the receiving body 11 about the roller or winding bearing 10, 10', which is non-rotatably connected to the guide part 5, the spiral spring 12 is further tensioned and a restoring force is generated by this. This restoring force generates a winding torque for a rotary movement of the receiving body 11 or the guide roller 6 opposite to the direction of rotation DR and thus for the winding of the retraction element 9, whereby the latter, together with the receiving body 11, exerts a tensile force on the roller or winding bearing 10, 10' and consequently on the guide part 5 and the guide roller 6 in the hose retraction direction.The pull-out hose 1 inserted into the guide roller 6 is thereby pulled in the direction of its retracted position if the user allows this return movement.

[0045] In the embodiments shown, the receiving body 11 has a cylindrical or cylindrical ring-shaped cross-section, as in the Fig. 4 , 6 and 7 to 9 In other words, the receiving body 11 is realized in this case as a winding core. The winding area 8a is arranged in the present case on a lateral surface 25 of the receiving body 11. In the illustrated embodiments, the spring receiving area 11a is circumferentially surrounded by the lateral surface 25 of the receiving body 11, so that the spiral spring 12 accommodated therein is surrounded by the lateral surface 25, as can be seen from the Fig. 6 and 8 visible.

[0046] In an advantageous implementation, the receiving body 11, as in the example of Fig. 3 to 6, on a side 27 facing the guide part 5 at least one retraction element holding part 26, in the example of Fig. 3 to 6 four radially outwardly projecting holding parts 26 for axially securing the retraction element 9. On a side 28 of the receiving body 11 facing away from the guide part 5, the retraction element 9 is axially secured directly by the guide roller 6 in this example, as shown in the Fig. 6 is evident.

[0047] In advantageous embodiments, the receiving body 11, as in the example of Fig. 3 to 6 , formed in one piece with the guide roller 6, as shown in Fig. 4 can be seen, whereby in this case it is necessarily coupled in a rotationally fixed manner to the guide roller 6.

[0048] In alternative embodiments, the receiving body 11, as in the example of Fig. 6 to 9, as a separate, independent component 11' from the guide roller 6, which is arranged rotatably, in particular freely rotatably, relative to the guide roller 6. For this purpose, the receiving body 11' or the winding sleeve formed by it in the example of Fig. 6 to 9together with the guide roller 6, it is placed onto the axle stub of the guide part 5 which forms the common roller or winding bearing 10, 10', whereby the receiving body 11' can rotate independently of the guide roller 6. This rotational decoupling of the receiving body 11' and the guide roller 6 can be advantageous for corresponding applications, since the winding rotational movement of the receiving body 11' caused by the transverse displacement of the roller or winding bearing 10, 10' does not need to be coordinated with whether or to what extent the guide roller 6 also rotates. For example, this design can be preferred for applications in which it is intended that the pull-out hose 1 does not execute a pure rolling movement in the guide groove 18, but rather a pure sliding movement or a combined sliding and rolling movement. During the sliding movement, the guide roller 6 rotates as a result of the extension orRetraction of the extension hose 1 does not occur while the receiving body 11' is rotated by the extension or retraction of the extension hose 1.

[0049] In the embodiments shown, the lateral surface 25 of the receiving body 11, 11' is arranged in a plane, i.e., without axial offset, coaxially with a lateral surface or the guide groove 18 of the guide roller 6. In another embodiment, the receiving body 11, 11' is arranged axially offset from the guide roller 6.

[0050] In a structurally advantageous embodiment, the winding area 8a surrounds the spring receiving area 11a circumferentially, as shown in the Fig. 4 and 6 is shown. In an alternative embodiment, the spring receiving area 11a is arranged axially offset from the winding area 8a.

[0051] In advantageous embodiments, such as in the exemplary embodiments shown, the stationary device part 3 has a hose guide box 13, which is designed to receive the hose bend 1a in a position sagging inward toward the box in a rotationally secured manner, wherein the guide part 5 is translationally movable in the hose bend length direction SL R outward from the box as the hose bend length decreases and inward from the box as the hose bend length increases. Preferably, the hose bend 1a is received in the box 13 in a rotationally secured manner, i.e., the box 13 prevents the hose bend 1a with its side walls from rotating around its longitudinal axis within the box and thereby twisting.

[0052] The hose guide box 13 is open at a hose insertion side 29, so that the hose bend 1a extends through the open hose insertion side 29 into the hose guide box 13. In the examples shown, the hose guide box 13 is arranged with the hose insertion side 29 facing upwards. In the examples shown, the hose guide box 13 is designed to be closed on the other sides. In this case, the hose guide box 13 with its entire volume can serve as a water collection container if required, if it is arranged with its side facing upwards. In alternative embodiments, the other sides of the hose guide box 13 can be designed to be completely or partially open. In the embodiment shown, the hose guide box 13 is cuboid-shaped, as shown in the Fig. 1 and 2 can be seen. In alternative designs, the hose guide box 13 has any other box shape.

[0053] In applications not shown, the hose guide box 13 is arranged with the hose insertion side 29 facing downward, meaning that in this case, the user can pull the extension hose downward out of the hose guide box 13. In other applications not shown, the hose guide box 13 is arranged at an angle upward or diagonally. If the hose insertion side 29 faces diagonally downward or directly downward, any leaking water can automatically exit the hose guide box 13 via the hose insertion side 29.

[0054] A general advantage of the invention is that the pull-out hose guide device or the hose guide box 13 can be arranged in any desired spatial position without compromising its functionality. In particular, it is not necessary for the hose bend 1a to extend vertically downward, since the guide roller 6 can be held preloaded against the bend reversal area 1b by means of the retraction device 7 with its spring return unit 8, and the weight of the guide roller is not required for this.

[0055] In the examples shown, the hose guide box 13 has on an inner side 31 the guide device 21 complementary to the guide device 20 in the form of a linear guide, in particular a vertical guide, as shown for example in Fig. 3 is evident.

[0056] In the example of Fig. 1 and 2The hose guide box 13 is placed on a base plate 32 of the substructure 16. In alternative embodiments, the hose guide box 13 can have a box holding frame 34 in order to attach it, for example, directly to a worktop 32 of the substructure 16 or to another desired location, e.g. in the case of a pull-out hose guide device for a pull-out bathtub hand shower, as in the example of Fig. 10 by attaching the box support frame 34 to a bathtub panel or an adjacent wall area of ​​a bathroom. The hose guide box 13 is preferably detachably attached to the box support frame so that it can be removed from it, e.g., for maintenance purposes, without having to dismantle the box support frame itself or loosen its fastening, e.g., to a bathtub panel, a kitchen sink substructure, or the like.

[0057] In a structurally advantageous embodiment, the retraction element 9 is fixed with its fastening section 9a to a fixing area 13a of the hose guide box 13, in particular to a front side area 13b of the hose guide box 13, as shown in the Fig. 1 and 2 is shown. In the examples shown, a fastening part 30 can be fixed to the hose guide box 13, to which the retraction element 9 is fixed. The retraction element 9 preferably has a holding element at each of its ends, in the case shown, as can be seen from the Fig. 7 and 9As can be seen, each ball nipple 36 1 , 36 2 , one of which is arranged in a holding receptacle of the fastening part 30, so that the retraction element 9 is firmly connected to the fastening part 30, while the other is held on the receiving body 11, for which purpose the latter has, for example, a radial insertion slot 37. Alternatively, the retraction element 9 can also be connected to the fastening part 30 in another conventional manner.

[0058] In advantageous embodiments, the guide roller 6, as in the examples shown, forms a base body that at least partially accommodates the return device 7, and the guide part 5 forms a cover body placed on the base body, which at least partially covers the return device 7. In the examples shown, the guide part 5 is disc-shaped and detachably connected to the guide roller 6. In this case, the guide part 5 completely covers the return device 7, as in the Fig. 3 and 10 is evident.

[0059] In the statements according to the Fig. 3 to 9 the guide roller arrangement 4 includes a single guide roller 6. In alternative embodiments, it comprises several guide rollers. Fig. 10illustrates an example in which the guide roller arrangement 4 includes two guide rollers 6 1 , 6 2 , which are arranged like loose rollers of a pulley system, whereby the extension hose 1 forms a further hose bend 1d in addition to the hose bend 1a. At least one of the two guide rollers 6 1 , 6 2 can be identical to the guide roller 6 in the examples of Fig. 3 to 9 correspond, and at least this guide roller can be the spring return unit 8 in one of the embodiments according to the Fig. 3 to 9 be assigned, preferably in a realization with the receiving body 11, 11' rotationally decoupled from the guide roller(s) 6 1 , 6 2 . Furthermore, the pull-out hose guide device can be Fig. 10 that of the Fig. 3 to 6 or that of the Fig. 7 to 9 In alternative designs, the pull-out hose guide device includes three or more guide rollers in the form of loose pulleys.

[0060] As the exemplary embodiments shown and explained above make clear, the invention advantageously provides a pull-out hose guide device with which a pull-out hose with a hose bend of variable length can be reliably guided. By guiding the pull-out hose, undesired twisting and / or jamming of the hose bend, which could hinder the extension and retraction of the pull-out hose, can be avoided. The inventive arrangement of the retraction device, in particular the spring retraction unit, and the optional additional provision of the hose guide box enables such functionally reliable guidance of the pull-out hose with, at the same time, relatively low assembly effort and a compact design.

Claims

1. Pull-out hose guiding device for guiding a pull-out hose (1) which has a hose bend (1a) with a variable hose bend length, preferably a sanitary pull-out hose (1), comprising - a stationary device part (3), - a guide roller arrangement (4) which is guided on the stationary device part (3) translationally movably in a pull-out hose longitudinal direction (SLR) and comprises a guiding part (5) which is guided on the stationary device part (3) translationally movably and at least one guide roller (6) which can be placed in a bend-reversing region (1b) of the hose bend (1a), and - a retrieving device (7) coupled to the guide roller arrangement (4) and comprising a spring-driven retracting unit (8), characterized in that - the retrieving device (7) comprises a retracting element (9) which is wound with a variable part of its length onto the spring-driven retracting unit (8) so as to be unwound and wound, - the spring-driven retracting unit (8) is translationally coupled to the guide roller arrangement (4), and - the retracting element (9) is fixed with a fastening section (9a) to the stationary device part (3).

2. Pull-out hose guiding device according to claim 1, further characterized in that the guiding part (5) comprises a roller bearing (10) on which the guide roller (6) is mounted rotatably about a guide roller rotation axis (FRA).

3. Pull-out hose guiding device according to claim 1 or 2, further characterized in that the guiding part (5) comprises a winding bearing (10') on which a winding region (8a) of the spring-driven retracting unit (8) is supported rotatably about a winding rotation axis (SWA).

4. Pull-out hose guiding device according claim 3, further characterized in that - the guiding part (5) is guided non-rotatingly on the stationary device part (3) and - the spring-driven retracting unit (8) comprises a receiving body (11, 11') which is rotationally coupled to the guide roller (6) or is held rotationally relative thereto, and a spiral spring (12), wherein the receiving body (11, 11') comprises the winding region (8a) and a spring receiving region (11a) which receives the spiral spring (12), and wherein a first end region (12a) of the spiral spring (12) is connected to the guiding part (5) in a non-rotating manner, and a second end region (12b) of the spiral spring (12) is connected to the receiving body (11) in a conjoint-rotational manner.

5. Pull-out hose guiding device according claim 4, further characterized in that the receiving body (11, 11') is formed in one piece with the guide roller (6) or is formed as a separate component relative to the guide roller (6) and / or in that the receiving body (11, 11') is arranged coaxial with the guide roller (6).

6. Pull-out hose guiding device according to claim 4 or 5, further characterized in that the winding region (8a) peripherally surrounds the spring receiving region (11a) or is arranged axially offset relative thereto.

7. Pull-out hose guiding device according to one of claims 1 to 6, further characterized in that the stationary device part (3) comprises a hose guiding box (13) which is configured to accommodate the hose bend (1a) in a box-inwardly sagging position secured against twisting, wherein the guiding part (5) is translationally movable in the hose bend longitudinal direction (SLR) box-outwardly when the hose bend length decreases and box-inwardly when the hose bend length increases.

8. Pull-out hose guiding device according claim 7, further characterized in that the retracting element (9) is fixed with its fastening section (9a) to a fixing region (13a) of the hose guide box (13), preferably to an end face region (13b) of the hose guide box (13).

9. Pull-out hose guiding device according to one of claims 1 to 8, further characterized in that the guide roller (6) forms a base member which at least partially accommodates the retrieving device (7) and that the guiding part (5) forms a covering member placed onto the base member, the covering member covering the retrieving device (7) at least partially.

10. Sanitary shower head (2) comprising - a shower head unit (14) and - a pull-out hose (1) to which the shower head unit (14) is coupled, characterized by - a pull-out hose guiding device according to one of claims 1 to 9 for guiding the pull-out hose (1).

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