Pull-out hose device, in particular sanitary pull-out hose device

Abstract

The invention relates to a pull-out hose device, comprising: a hose holder; a pull-out hose held at the hose holder; the rotary locking device is provided with a locking wheel capable of rotating and a locking claw which abuts against the locking wheel in an elastic pre-tightening mode and can swing around a locking claw axis. The locking wheel is coupled to the pull-out hose in a kinematic manner such that the locking wheel rotates in a pull-out rotational direction with a pull-out movement of the pull-out hose and rotates in a retraction rotational direction opposite the pull-out rotational direction with a retraction movement of the pull-out hose. In the pull-out release position, the locking claw releases the rotation of the locking wheel in the pull-out rotation direction of the locking wheel. The detent pawl can be displaced by the detent wheel from a pull-out release position into a retracted detent position by rotation in its retracted rotational direction and from a retracted detent position into a retracted release position by rotation in its pull-out rotational direction.

Description

Technical Field

[0001] The present invention relates to a pull-out hose device according to the preamble of claim 1, hereinafter also referred to as a pull-out hose device of this type, which may in particular be a sanitary pull-out hose device. Background Technology

[0002] Accordingly, the hose extension device includes a hose support; an extension hose that can be extended to an extension end position by an extension movement in the extension direction and retracted to a retracted end position by a retraction movement opposite to the extension movement, and held at the hose support; and a rotary lock having a rotatable locking wheel and a locking pawl that is elastically pre-tightly abutting against the locking wheel and oscillating about a locking pawl axis. The locking wheel and the extension hose (also referred to herein as the hose) are kinematically coupled such that the locking wheel rotates in the extension rotation direction with the extension movement of the extension hose and rotates in the retraction rotation direction opposite to the extension rotation direction with the retraction movement of the extension hose. The locking pawl releases the rotation of the locking wheel in its extension rotation direction in the extension release position. Therefore, the hose extension device includes an extension hose and an extension hose guide, referring to the remaining components of the hose extension device that house the extension hose and guide the hose during the extension and retraction movements of the hose.

[0003] Such pull-out hose devices are used, for example, in the hygiene field for pull-out handheld showerheads in bathtubs, sinks, and shower rooms, and for kitchen pull-out showerheads, i.e., pull-out handheld showerheads for kitchen sinks. Furthermore, these and similar pull-out hose devices are also used outside of hygiene technologies, such as for refueling hoses at gas stations for vehicles. The pull-out hose can be pulled out by the user from a retracted or extended position to a pulled-out or extended position, and then returned to the retracted position, typically automatically using a suitable retraction device that applies a subordinate retraction or pull-back force to the pull-out hose. The retraction force is typically provided by the retraction device as spring force when using a retraction spring and / or by gravity when using guide rollers inserted into the bend of the pull-out hose.

[0004] Non-traditional pull-out hose devices with such a retraction mechanism but without a rotation lock are disclosed, for example, in publications EP 3 647 503 A1, US 2017 / 0356170 A1 and WO 2021 / 191609 A1, utility model document DE 202005 019 492 U1, and patent document EP 3 394 353 B1. Another such pull-out hose device is described in the applicant's earlier EP application 24164172.9. In these non-traditional pull-out hose devices, the user must hold the pull-out hose in the corresponding pull-out position to prevent retraction, i.e., a hose holding force is used for this purpose.

[0005] In this type of hose pull-out device, the user unloads the hose holding force by rotating the locking device. By rotating the locking device, the hose can be secured in the desired pull-out position by preventing or inhibiting the hose from retracting, for example, by a retraction force provided by a retraction device, while simultaneously allowing the hose to be pulled out. To this end, the locking device performs its intended function in that the locking pawl allows the locking wheel to rotate in the direction of rotation (here, the pull-out rotation direction), and thus allows the hose to be pulled out, while the locking pawl prevents, i.e., blocks, the rotation of the locking wheel in the opposite direction of rotation (here, the retraction rotation direction), and thus prevents, i.e., blocks, the retraction or withdrawal of the hose.

[0006] Utility model document CN 203545354 U discloses a pull-out hose device of this type for a handheld sanitary spray head, wherein the locking wheel is composed of a rotating ring that is anti-rotationally coupled to a hose roller, and the pull-out hose is wound onto the hose roller. A locking pawl is associated with a user-operable button, which allows the user to move the locking pawl from its pull-out release position (in which the locking pawl releases rotation of the locking wheel in its pull-out rotation direction and simultaneously blocks rotation of the locking wheel in its retraction rotation direction) to a retracted release position, in which the locking pawl disengages from the locking wheel, thus releasing rotation of the locking wheel in its retraction rotation direction.

[0007] Similarly, utility model document CN 216548954 U discloses a pull-out hose device of this type for oxygen hoses, wherein the locking pawl can be moved by the user from its pull-out release position (which also serves as a retracted locking position, in which the locking pawl thus releases the rotation of the locking wheel in its pull-out rotation direction and prevents rotation in its retracted rotation direction) to a retracted release position (in which the locking pawl releases the rotation of the locking wheel in its retracted rotation direction). In this case, the locking pawl is constructed as a rack that is pivotally hinged at its end region, which works in conjunction with the outer toothed ring of the locking wheel under the action of a preload spring, and can be pivoted by the user to the retracted release position at its other end region via a button and a lever.

[0008] Patent document US 6,915,816 B2 discloses a pull-out hose device of this type for a handheld sanitary spray head, wherein a locking wheel has locking teeth on slightly more than half of its circumference. In the toothless circumferential region, the locking wheel does not engage with a locking pawl arranged for swinging motion. Therefore, the rotating lock can only hold the pull-out hose in place to prevent retraction in those positions where the locking pawl and the toothed area of ​​the locking wheel are opposite each other. To unlock, the user pulls the pull-out hose out further until the locking pawl reaches the toothless area of ​​the locking wheel, and then the user allows the pull-out hose to retract, whereby once the locking wheel contacts the locking pawl with its toothed area in its retraction rotation direction, the locking pawl is swung into the retracted release position, thereby allowing the pull-out hose to continue retracting without obstruction from the rotating lock. Summary of the Invention

[0009] The present invention addresses the technical problem by providing a pull-out hose device of this type, which offers further advantages over the prior art, particularly in terms of operational comfort and functionality.

[0010] The present invention solves this problem by providing a pull-out hose device having the features of claim 1. Advantageous improvements of the invention are described in the dependent claims, the contents of which are incorporated herein by reference into the specification. This particularly includes all embodiments of the invention resulting from the combinations of features defined by reference in the dependent claims.

[0011] In the pull-out hose device according to the invention, the locking pawl can be moved from the pull-out release position to the retracted locking position by rotation of the locking wheel in its retraction rotation direction. In the pull-out release position, the locking pawl releases the rotation of the locking wheel in its pull-out rotation direction. In the retracted locking position, the locking pawl locks the locking wheel from further rotation in its retraction rotation direction. Furthermore, the locking pawl can be moved from the retracted locking position to the retracted release position by rotation of the locking wheel in its pull-out rotation direction. In the retracted release position, the locking pawl releases the rotation of the locking wheel in its retraction rotation direction.

[0012] By means of these measures according to the invention, a high degree of operational comfort and reliable functionality is achieved for the hose extension device. The rotary locking mechanism is designed such that the retracted locking position of the locking pawl differs from its pull-out release position, and the locking pawl is displaced from the pull-out release position to the retracted locking position by rotation of the locking wheel in its retraction rotation direction. Thus, sufficient for this displacement is that, after the user pulls out the hose to the desired pull-out position, the hose is allowed, preferably only a small retraction movement, by which the locking wheel rotates a short distance in the retraction rotation direction. This mechanism for displacing the locking pawl to its retracted locking position can, in principle, operate in any pull-out position of the hose, i.e., it is not subject to limitations regarding the possible fixed positions of the pull-out hose.

[0013] By rotating the locking wheel again, in this case, by rotating it in the direction of its pull-out rotation, the locking pawl can move from its retracted locking position to its retracted release position, in which the locking pawl releases the rotation of the locking wheel in its retracted rotation direction. Therefore, the user can also indirectly and easily manipulate the locking pawl by pulling out the hose, specifically by pulling the hose out preferably a short distance from its previously set fixed position.

[0014] Therefore, currently, the pull-out release position of the locking pawl is not simultaneously the retracted locking position. Instead, the retracted locking position is defined as the locking pawl's own position, distinct from the pull-out release position. This decoupling of the pull-out release and retracted locking positions based on position allows for the design of the retracted locking position independently of the pull-out release position, thereby gaining functional and operational advantages. For example, such a retracted locking position can be designed to optimize the required locking or blocking function of the locking pawl, taking into account the obstructing force that may occur therein, without having to consider the positional fact that applies to the locking pawl when it is in its pull-out release position. Furthermore, this decoupling of the pull-out release and retracted locking positions allows for the further measure of shifting the locking pawl from the retracted locking position to the retracted release position by rotating the locking wheel in its pull-out rotation direction. This means that the user can then manipulate the hose to move the locking pawl from its retracted locking position to its retracted release position by pulling it out slightly further, thereby unlocking the rotary lock.

[0015] Therefore, the pull-out hose device according to the invention can fix or secure the pull-out hose in virtually every arbitrary pull-out position as desired and needed by simply releasing the pull-out hose or by slightly moving the pull-out hose back, and can easily release the pull-out hose from its fixed position by slightly pulling out the hose, after which the hose can be automatically or assisted by the user to further or completely retract.

[0016] In an improved embodiment of the invention, the locking wheel has a plurality of locking teeth on its circumferential side, which cooperate with the locking pawl, wherein the locking pawl can be displaced from a retracted locked position to a retracted released position by one of the locking teeth through rotation of the locking wheel in its pull-out rotation direction. Therefore, the locking teeth advantageously serve as actuating elements for switching the locking pawl from its pull-out released position to its retracted locked position and / or from its retracted locked position to its retracted released position, thus eliminating the need for other actuating elements. In particular, in a given pull-out position of the hose, the locking teeth adjacent to the locking pawl in either the retracted or pull-out rotation direction serve as actuating elements for correspondingly displacing the locking pawl. The rotation angle of the locking wheel required to switch the locking pawl from its pull-out released position to its retracted locked position or from its retracted locked position to its retracted released position depends not on the angular spacing between adjacent locking teeth of the locking wheel, but only on the angular spacing of the pawl positions. In an alternative implementation, the displacement of the locking pawl from its pulled-out release position to its retracted locking position and / or from its retracted locking position to its retracted release position is performed by other actuating elements configured for this purpose, which are preferably coupled to the rotation of the locking wheel.

[0017] In an improved embodiment of the invention, the retracted locking position of the locking pawl is the clamped position of the locking pawl between the locking wheel and the locking stop of the rotary lock. In this case, the retracted locking position of the locking pawl is advantageously achieved by simply clamping the locking pawl between the locking wheel and the locking stop. Alternatively, the retracted locking position can be achieved in other ways, for example by an automatically disengaging latching mechanism between the locking pawl and a corresponding mating latching element of the rotary lock.

[0018] In an improved embodiment of the invention, the retracted release position of the locking pawl is a self-holding position of the locking pawl at the pawl retaining element of the rotary lock. Therefore, the pawl retaining element serves as a retaining element for the locking pawl in its retracted release position. The locking wheel, including locking teeth that may be constructed at the locking wheel, is unloaded by this function, so that the locking pawl does not need to interact with the locking wheel or its locking teeth in this position. The pawl retaining element can be, for example, the aforementioned locking stop or other retaining elements provided at the rotary lock. Self-holding can be achieved, for example, through a form-fit or force-fit connection. In an alternative embodiment, the retracted release position of the locking pawl can be achieved in other ways, for example, as a non-self-holding position in which the locking pawl is held by the user, who allows the hose to retract.

[0019] In one improved embodiment of the invention, the locking pawl is capable of being displaced along an axial guide track with its locking pawl axis. This has the advantage that the locking pawl can be displaced or moved along an axial guide track as needed for transitional movement between its three different positions (i.e., pull-out release position, retracted locking position, and retracted release position). Depending on the needs and system implementation, this can be accompanied, for example, by additional rotational or oscillating movement of the locking pawl about its locking pawl axis. In an alternative embodiment, the locking pawl axis is fixed, and the locking pawl can otherwise transition between its three positions. For this purpose, elastic deformability can be provided, for example, by means of the deformability of the hinge, preferably combined with oscillation about its locking pawl axis.

[0020] In one design of the invention, the axial guide rail extends with a track direction component relative to the radial direction of the locking wheel. This is the optimal orientation of the axial guide rail for many applications because, in this case, the locking pawl can perform a radially outward clearance movement relative to the locking wheel with its locking pawl axis during its transition movement, for example, to enable the locking pawl to swing along the diameter line of the locking pawl axis and the locking wheel axis. In an alternative embodiment, the axial guide rail extends without a radial track direction component, for example, purely along the circumferential direction of the locking wheel, to which other components of the lock are then designed accordingly to achieve the desired pawl transition movement.

[0021] In one embodiment of the invention, the displacement of the locking pawl from its pulled-out release position to its retracted release position and / or from its retracted locking position to its retracted release position includes displacement of its locking pawl axis along an axial guide track. In this case, the axial guide track is specifically designed to allow the locking pawl to make a corresponding avoidance movement along its locking pawl axis to transition the locking pawl from its retracted locking position to its retracted release position. In an alternative embodiment, this transition movement does not involve displacement of the locking pawl axis along the axial guide track. For example, for this purpose, a purely oscillating movement of the locking pawl to a disengaged locking position, etc., can be provided.

[0022] In another embodiment of the invention, the locking pawl abuts against the anti-rotation stop of the rotating lock in its pull-out release position, and as the locking wheel rotates in its pull-out rotation direction, the locking pawl shifts along an axial guide track with its locking pawl axis. In this embodiment, when the locking pawl abuts against the anti-rotation stop in its pull-out release position, the locking pawl can avoid the locking wheel rotating in its pull-out rotation direction (especially locking teeth, if possible, provided on the circumferential side of the locking wheel) by shifting or moving along an axial guide track with its locking pawl axis. The anti-rotation stop fixes the locking pawl in this position to prevent additional avoidance oscillations about its locking pawl axis. Thus, the locking pawl maintains the angular position defined by the anti-rotation stop during the hose pull-out movement. In an alternative implementation, the pull-out release position of the locking pawl is achieved in other ways, for example, in the case of using a locking wheel with locking teeth on the circumferential side, in a conventional manner, such that the locking pawl spring elastically abuts against the locking teeth so that the locking teeth can rotate through the locking pawl in the pull-out rotation direction of the locking wheel, and the locking pawl here induces an avoidance swinging motion.

[0023] In one improved embodiment of the invention, the displacement of the locking pawl from its pull-out release position to its retracted locking position includes a swing about its locking pawl axis. Therefore, the retracted locking position differs from the pull-out release position, at least in the angular position of the locking pawl. In embodiments having an axial guide rail for the locking pawl axis, this transitional movement of the locking pawl preferably additionally includes, for example, an avoidance movement along the axial guide rail along the locking pawl axis. In alternative embodiments, this transitional movement of the locking pawl is achieved in other ways, for example as a pure translational movement of the locking pawl, particularly along the axial guide rail along its locking pawl axis.

[0024] In one improved embodiment of the invention, the rotary lock is movably arranged along the fixed portion of the hose bracket, more specifically coupled to the pull-out and retraction movements of the hose, and the fixed portion of the hose bracket has a fixed pawl conversion element on the retracted end position side, which shifts the locking pawl from its retracted release position to its pull-out release position in a conversion position on the retracted end position side of the rotary lock moving along the hose bracket.

[0025] This is an advantageous implementation of the connection between the rotary lock and the hose support for many applications. To this end, the rotary lock is arranged at a relevant fixed portion of the hose support such that it can move along it, whereby this movement of the rotary lock is coupled to the pull-out and retraction movements of the hose. This fixed portion of the hose support, which does not move with the pull-out hose and the rotary lock, includes a pawl conversion element fixed at the retracted end position side, which should be understood as being associated with the retracted end position of the pull-out hose. Through this pawl conversion element, the locking pawl in the corresponding retracted end position side of the rotary lock (i.e., when the rotary lock, moving along the hose support during hose retraction, is located at a position associated with, and close to, the retracted end position of the pull-out hose) shifts from its retracted release position, i.e., transitions to its pull-out release position. This ensures that when the pull-out hose reaches its furthest retracted position (i.e., its retracted end position), the locking pawl is in its pull-out release position, which constitutes the initial position of the rotary lock. In an alternative embodiment, the rotary lock, along with its locking pawl, is otherwise responsible for being in this initial position when the pull-out hose is fully retracted.

[0026] In an improved embodiment of the invention, the rotary locking device is movably arranged along the fixed portion of the hose bracket in coupling with the pull-out and retraction movements of the hose, and the fixed portion of the hose bracket has a fixed claw conversion element on the pull-out terminal position side, which shifts the locking claw from its pull-out release position to its retraction release position in the conversion position of the rotary locking device moving along the hose bracket at the pull-out terminal position side.

[0027] This is also a particularly advantageous measure for the connection between the rotary locking device and the hose support and the pull-out hose. Here, the fixed part of the hose support (where the rotary locking device is movably arranged and moves along the fixed part in coupling with the pull-out and retraction movements of the hose) has a fixed pawl conversion element on the pull-out end position side, that is, a pawl conversion element associated with the pull-out end position of the hose (i.e., the farthest pull-out position of the hose), located at a position where the rotary locking device reaches when the hose moves to the vicinity of its pull-out end position. This pawl conversion element shifts the locking pawl from its pull-out release position to its retraction release position in the corresponding conversion position of the rotary locking device associated with the pull-out position. This ensures that when the hose is in its farthest pull-out position, the rotary locking device is in its unlocked state, in which its locking pawl allows the hose to retract. Although the locking pawl could theoretically be shifted from the previous retraction locking position to the retraction release position by the user by pulling out a shorter section of the hose, such further pull-out of the hose is no longer possible in the pull-out end position. In an alternative implementation, the locking claw is otherwise ensured to occupy its retracted release position when the hose is fully extended.

[0028] In one embodiment of the invention, the hose support has a fixed claw groove track along which the locking claw can translate. The claw groove track has a track shoulder on the retracted end position side constituting a claw conversion element on the retracted end position side and / or a track shoulder on the pulled-out end position side constituting a claw conversion element on the pulled-out end position side. This measure is an advantageous and simple implementation for either the claw conversion element on the retracted end position side or the claw conversion element on the pulled-out end position side. For this purpose, the locking claw is translatably arranged along the fixed claw groove track, and the claw groove track is suitably provided with a track shoulder on the retracted end position side or the pulled-out end position side, so as to provide the relevant claw conversion element in a simple manner. In an alternative embodiment, the corresponding claw conversion element can be implemented in other ways, for example, in the form of a conversion protrusion fixedly arranged at a relevant position, which converts the locking claw in the desired manner when the locking claw abuts against or moves past the conversion protrusion.

[0029] In an improved embodiment of the invention, the hose support has a guide roller assembly comprising: a fixed guide body; a roller retaining member guided at the guide body in a translationally movable manner with the extension and retraction of the hose; and at least one guide roller rotatably retained at the roller retaining member, wherein the hose bend that is pulled out to abut against the guide roller is guided at the roller circumference of the guide roller. Here, a locking wheel is rotatably coupled to the guide roller and / or to a winding roller rotatably retained at the roller retaining member and rotating with the translational movement of the roller retaining member. A locking pawl is arranged at the roller retaining member.

[0030] This is an implementation of a hose support for pulling out hoses that is advantageous for many applications. For this purpose, a guide roller assembly, in a form known per se, such as that described in the prior art mentioned at the beginning, is used. The fixed guide body can be implemented, for example, as a guide plate, guide rail, or hose box that houses the pulling-out hose. A roller retaining member is translatably guided at the guide body, for example by a subordinate groove guide, and serves as a support for one or more guide rollers rotatably arranged therein, which are respectively inserted into the hose bends of the pulling-out hose. Optionally, the roller retaining member also serves to rotatably retain a winding roller, which can be, for example, a component of a hose retraction device, as is known per se. When the hose is pulled out, the roller retaining member moves along the fixed guide body, and the corresponding guide roller typically rotates if the guide roller is not implemented as a sliding roller. The optional winding roller also rotates due to the translational movement of the roller retaining member.

[0031] The rotation of the guide roller or winding roller is transmitted to the corresponding rotation of the locking roller, which is coupled to its rotation. The locking pawl is positioned at the roller retaining component, meaning that the rotary lock generally moves along a fixed guide when the hose is pulled out or retracted. Through rotational coupling from the locking roller to the guide roller or winding roller, the rotary lock fulfills its intended function, particularly regarding the movement of the locking pawl between its pull-out release position, its retracted locking position, and its retracted release position, solely by the corresponding pull-out or retracting movement performed by the user when pulling out the hose. In an alternative embodiment, the rotary lock can be otherwise coupled to the hose support and the hose extension point.

[0032] In one design of the invention, the locking pawl can be guided to translate along the axis of the track by means of its locking pawl axis, and is elastically preloaded against the locking wheel by means of a spring at the roller retaining member. This is a structurally and functionally advantageous coupling and motion guidance for the locking pawl for many applications.

[0033] In one embodiment of the invention, the hose support has a retraction device coupled to a guide roller assembly, the retraction device comprising a winding roller, a retraction element wound on the winding roller, and a pull-back spring unit. Preferably, in this case, the locking wheel is coupled to the winding roller in an anti-rotational manner. Attached Figure Description

[0034] Advantageous embodiments of the invention are shown in the accompanying drawings. These and other embodiments of the invention are explained in more detail below. Herein: Figure 1 A side view of the pull-out hose device is shown. Figure 2 It shows the side view from the front. Figure 1 An exploded view of the guide roller assembly of the pull-out hose device, together with the associated retraction device and rotation lock. Figure 3 An exploded view of the guide roller assembly from the rear, viewed from the side, is shown. Figure 4 A perspective view of the guide roller assembly is shown. Figure 5 The rear view shows the guide roller assembly in the pull-out release position, together with the rotational lock with locking pawl. Figure 6 It shows along Figure 5 The sectional view of line VI-VI in the middle. Figure 7 It shows along Figure 6 The sectional view of line VII-VII in the middle. Figure 8 It shows Figure 7 A cross-sectional view showing the locking pawl in the retracted locking position. Figure 9 It shows Figure 7 A cross-sectional view showing the locking pawl in the retracted, released position. Figure 10 A perspective view of the locking pawl is shown. Figure 11 It shows Figure 1 A detailed view of region XI, where the locking pawl is in the retracted and released position, and Figure 12 It shows Figure 11 The detailed image shows the locking pawl in the pulled-out release position. Detailed Implementation

[0035] As shown in the accompanying drawings with the aid of an exemplary embodiment, the hose pull-out device according to the present invention includes a hose support 1, a hose pull-out 2, and a rotary locker having a rotatable locking wheel 3 and a locking pawl 4 that is elastically pre-tensioned against the locking wheel 3 and can swing about the locking pawl axis 5. The elastic pre-tension is preferably implemented as a spring elastic pre-tension.

[0036] The pull-out hose 2 can be extended to the pull-out end position at the hose bracket 1 by a pull-out movement, and can be retracted to the retracted end position by a retraction movement opposite to the pull-out movement, as is common for such pull-out hose devices. The locking wheel 3 is kinematically coupled to the pull-out hose 2 such that the locking wheel rotates in the pull-out rotation direction DA with the pull-out movement of the hose 2, and rotates in the retraction rotation direction DE with the pull-out movement of the hose 2, opposite to the pull-out rotation direction DA. The two rotation directions DA and DE are... Figures 7 to 9 As shown in the image.

[0037] exist Figure 5 , Figure 7 and Figure 12 In the visible pull-out release position AF, the locking pawl 4 releases the locking wheel 3 from rotation along its pull-out rotation direction DA. The locking pawl 4 can move from this pull-out release position AF to the retracted locking position ES, in which the locking pawl 4 locks the locking wheel 3 from further rotation along its retracted rotation direction DE. The retracted locking position ES... Figure 8 As can be seen, the displacement of the locking pawl 4 from its pulled-out release position AF to its retracted locking position ES is caused by the locking wheel 3, particularly by the rotation of the locking wheel 3 along its retraction rotation direction DE.

[0038] Furthermore, the locking pawl 4 can shift from its retracted locking position ES to its retracted release position EF, in which the locking pawl releases the rotation of the locking wheel 3 along its retracted rotation direction DE. The retracted release position EF is... Figure 9 and Figure 11 As can be seen, this displacement of the locking pawl 4 from its retracted locking position ES to its retracted release position EF is also caused by the locking wheel 3, particularly by the rotation of the locking wheel 3 along its pull-out rotation direction DA.

[0039] In an advantageous embodiment, as shown in the example, the locking pawl 4 can be displaced along the axial guide rail 7 with its locking pawl axis 5. The axial guide rail 7 is, for example, in... Figure 3 and Figures 7 to 9 As can be seen in the text.

[0040] In a favorable implementation, as shown in the example, the axis guide rail 7 extends with a radial track direction component 7R relative to the locking wheel 3, such as... Figure 8 As explicitly illustrated by the dashed line, track 7 can be purely radially extended or have an additional circumferential component.

[0041] In the corresponding implementation, the displacement of the locking pawl 4 from its pulled-out release position AF to its retracted release position EF includes the displacement of its locking pawl axis 5 along the axial guide rail 7, as is the case in the example shown.

[0042] In a favorable implementation, the displacement of the locking pawl 4 from its retracted locking position ES to its retracted releasing position EF includes the displacement of its locking pawl axis 5 along the axial guide rail 7, as is also the case in the example shown.

[0043] In an advantageous embodiment, as shown in the example, the locking wheel 3 has a plurality of peripheral locking teeth 3z that interact with the locking pawl 4. In particular, in this case, the displacement of the locking pawl 4 from its retracted locking position ES to its retracted release position EF is caused by the rotation of the locking wheel 3 along its pull-out rotation direction DA, specifically by the locking teeth 3z that are adjacent to, i.e., closest to, the locking pawl 4 in the pull-out rotation direction DA of the locking wheel 3. Figure 8 and Figure 9 In the figure, the locking tooth is marked with the reference numeral 3z1. As is common for this type of locking tooth, the locking tooth 3z has a serrated shape with steep or relatively steep tooth surfaces and flat or relatively flat tooth surfaces.

[0044] In an advantageous embodiment, as shown in the example, the retracted locking position ES of the locking pawl 4 is achieved by the clamping position of the locking pawl 4 between the locking wheel 3 and the locking stop 6 of the rotating lock. Figure 8 In this context, the clamping position of the locking pawl 4 between the locking stop 6 and the locking wheel 3 is specifically given by the clamping of the locking pawl 4 between the locking teeth 3z2 that abut or press against the locking pawl 4 in this state.

[0045] In an advantageous embodiment, the displacement of the locking pawl 4 from its pulled-out release position AF to its retracted locking position ES includes a swing about its locking pawl axis 5, as is the case in the example shown. This is especially true from... Figure 7 and Figure 8 As can be seen from the comparison. In the embodiment of the locking wheel 3 with locking teeth 3z, this displacement of the locking pawl is caused by the locking teeth 3z, which are closest to the locking pawl 4 in the retraction rotation direction DE of the locking wheel 3 before the locking pawl 4 shifts from its pulled-out release position AF to its retracted locking position ES. In the case where the locking pawl 4 is in the clamped position between the locking stop 6 and the locking teeth 3z2, this is the locking teeth 3z2, as from Figure 7 It is visible in the text.

[0046] In particular, in this case, the displacement of the locking pawl 4 from its pulled-out release position AF to its retracted locking position ES is caused by the locking tooth 3z2 abutting the front end of the locking pawl 4 with its steep tooth surface (the locking pawl 4 is elastically preloaded against the locking wheel 3 at this front end), and the front end of the locking pawl drives the locking pawl 4 as it rotates in the retraction rotation direction DE (in this case, counterclockwise). Consequently, the locking pawl 4 rotates accordingly about its locking pawl axis 5, clockwise in the example shown, until it reaches... Figure 8 The retraction locking position ES, such as by means of Figure 7 and Figure 8As can be seen by comparison. Additionally, when needed, the locking pawl 4 can perform radial avoidance movement by moving the locking pawl with its locking pawl axis 5 in the axis guide rail 7.

[0047] In an advantageous embodiment, as shown in the example, the retracted release position EF of the locking pawl 4 is achieved as a self-holding position of the locking pawl 4 at the pawl holding element 15 of the rotary lock. Figure 9 As shown, in the example illustrated, the claw retaining element 15 and the locking claw 4 are coordinated in shape for this purpose, such that the claw retaining element 15 shape-fits and / or force-fits the elastically pre-tightened locking claw 4, thereby allowing the locking wheel 3, along with its locking teeth 3z, to rotate freely in its retraction rotation direction DE without obstruction from the locking claw 4. For completeness, it should be mentioned that in this retracted release position EF, the locking claw 4 also allows the locking wheel 3 to rotate in its pull-out rotation direction DA; that is, in this state of rotating the locking device, the user can freely retract the pull-out hose 2 not only to any length but also to any length. In the example illustrated, the claw retaining element 15 and the locking stop 6 are constructed from the same component; that is, the locking stop 6 also functions as the claw retaining element 15.

[0048] In an advantageous embodiment, as shown in the example, the rotation lock includes an anti-rotation stop 8 against which the locking pawl 4 abuts in its pulled-out release position AF, wherein, as the locking wheel 3 rotates in its pulled-out rotation direction DA, the locking pawl 4 is displaced along the axial guide rail 7 by its locking pawl axis 5. This is particularly evident from Figure 7 As can be seen. When Figure 7 When the locking wheel 3 rotates in its pull-out rotation direction DA, in this case, the locking pawl 4 slides along the flat tooth surface of the locking tooth 3z with its facing pawl tip in a clockwise direction, and presses radially outward through these tooth surfaces, while the anti-rotation stop 8 prevents the locking pawl 4 from swaying. The axis guide rail 7 enables this radial swaying movement of the locking pawl 4.

[0049] In an advantageous embodiment, as shown in the example, the rotary lock is movably arranged along the fixed portion of the hose support 1, wherein the rotary lock's movement is coupled to the pull-out and retraction movements of the hose 2. The fixed portion of the hose support 1 has a fixed pawl conversion element 9 on the retracted end position side, which shifts the locking pawl 4 from its retracted release position EF to its pull-out release position AF at the corresponding retracted end position side of the rotary lock moving along the hose support 1.

[0050] This is Figure 11 and 12 The details are shown in the partial image. Figure 11The diagram shows the situation when the extended hose 2 is near its retracted end position during its retraction movement. Here, the locking pawl 4 is in its retracted release position EF, which allows the hose 2 to retract. Figure 12 This illustrates the situation after the hose 2 has retracted slightly to its retracted end position or has reached that position. Here, the locking pawl 4 has been engaged by the pawl conversion element 9 on the retracted end position side. Figure 11 The retraction release position EF is shifted to its position. Figure 12 The pull-out release position AF shown, in the example illustrated, is specifically achieved through the swinging motion of the locking pawl 4, optionally accompanied by the avoidance motion of its locking pawl axis 5 along the axial guide rail 7. For this functionality, as particularly from... Figure 10 As can be seen in the example shown, in addition to abutting against the claw portion 4a of the locking wheel 3, the locking pawl 4 also has a conversion protrusion 4b, and the claw conversion element 9 works together with the conversion protrusion. The conversion protrusion 4b is connected to the claw portion via a connecting piece 4c, preferably in one piece, wherein the locking pawl 4 is guided in the axial guide rail 7 by its connecting piece 4c.

[0051] This mechanism ensures that when hose 2 is fully retracted, i.e., in its retracted end position (from which the user can pull the hose out), the locking pawl 4 is in its pull-out release position AF (which in this case constitutes the initial position of the rotary lock). In particular, this ensures that when the user wishes to secure or fix hose 2 in the desired pull-out position, the locking pawl 4 can be moved from its pull-out release position AF to its retracted locking position ES upon the next pull-out of hose 2. This eliminates the need for a mechanism to directly move the locking pawl 4 from its retracted release position EF to its pull-out release position AF.

[0052] In an advantageous embodiment, as shown in the example, the rotary lock is movably arranged along the fixed portion of the hose support 1, wherein the rotary lock's movement is coupled with the pull-out and retraction movements of the hose 2. The fixed portion of the hose support 1 has a fixed pull-out end position side claw conversion element 10, which shifts the locking pawl 4 from its pull-out release position AF to its retraction release position EF in the corresponding pull-out end position conversion position of the rotary lock moving along the hose support 1. This mechanism, and in particular the pull-out end position side claw conversion element 10, functions similarly to the mechanism described above with the retraction end position side claw conversion element 9. In the example shown, the locking pawl 4 again interacts with the pull-out end position side claw conversion element 10 via its conversion protrusion 4b. In this case, this mechanism ensures that when the hose 2 is pulled out to its pull-out end position, the locking pawl 4 is in its retraction release position EF, so that the hose can then retract again without obstruction by the rotary lock.

[0053] In a corresponding embodiment, the hose support 1 has a fixed claw slide rail 14, along which the locking claw 4 can translate. The claw slide rail 14 has a track shoulder 14a on the retracted end position side of the claw conversion element 9 and / or a track shoulder 14b on the pulled-out end position side of the claw conversion element 10. In the example shown, a track shoulder 14a on the retracted end position side and a track shoulder 14b on the pulled-out end position side are provided, as from... Figure 1 As can be seen, the corresponding track shoulders 14a, 14b work together with the conversion protrusion 4b of the locking pawl 4 in such a way that the conversion protrusion abuts against the track shoulder and is swung by the track shoulder.

[0054] In an advantageous embodiment, as shown in the example, the hose support 1 includes a guide roller assembly having a fixed guide body 11, a roller retaining member 12 (which is guided at the guide body 11 to translateably move with the pulling and retraction of the hose 2), and at least one guide roller 13 rotatably held at the roller retaining member 12, the hose 2 being pulled out to abut against the hose bend 2B at the circumference of the guide roller. The guide roller assembly has a structural type known per se, as described, for example, in the prior art mentioned at the beginning. In the example shown, two guide rollers 131, 132 are arranged parallel to each other and are positioned in the two bends of the hose 2 in a pulley configuration.

[0055] In the example shown, the guide body 11 consists of two parallel, spaced-apart guide plates that form a laterally open hose box, housing the pull-out hose 2 and the guide roller assembly between them. Here, the roller retaining member 12 is guided translatably within a linear chute track 19 constructed in the guide body 11, or in one of the two guide plates, or within two spaced-apart linear chute tracks 19 constructed in the two guide plates, as shown. Figure 1 , Figure 11 and Figure 12 As can be seen in the image. Furthermore, the claw groove track 14 is constructed at the guide body 11 or at one of the guide plates, for example, as shown in the image. Figure 1 The slide rail 19 shown is parallel to and spaced apart from the slide rail 19 used for the roller retaining member 12.

[0056] In an advantageous implementation, as shown in the example, the locking pawl 4 can be guided to translate along the axial track 7 with its locking pawl axis 5, and is held elastically against the roller retaining member 12 at the locking wheel 3 by means of the spring 20 (in the example shown, in particular a helical tension spring).

[0057] In an advantageous embodiment, as shown in the example, the hose support 1 also has a retraction device coupled to the guide roller assembly, which includes a winding roller 16, a retraction element 17 (e.g., in the form of a retraction rope, retraction line, retraction band, etc.) wound thereon, and a pull-back spring unit 18. The retraction device also has a structural type known per se, as is known from the prior art mentioned at the beginning. The winding roller 16 is rotatably held at the roller retainer 12 and rotates during the translational movement of the roller retainer 12. In the example shown, the pull-back spring unit 18 includes a helical spring inserted into the winding roller 16, which is fixed at one end to the roller retainer 12 and at the other end to the winding roller 16. The retraction element 17 is wound around the outer periphery of the winding roller 16 and unfolds from the winding roller when the hose 2 is pulled out and is wound back onto the winding roller when the hose 2 is retracted.

[0058] In an advantageous embodiment, as shown in the example, the locking wheel 3 is rotatably coupled to the winding roller 16. Here, the locking wheel 3 can be constructed as a single piece with the winding roller 16, as shown in the example, or it can be made as a separate component and rotatably coupled to the winding roller 16. Alternatively or additionally, the locking wheel 3 can be rotatably coupled to one of the guide rollers 13 or 131, 132. Similarly, depending on the need and application, the locking wheel 3 can be constructed as a single piece at one of the guide rollers 13 or 131, 132, or it can be made as a separate component and rotatably coupled to the guide roller.

[0059] As will become apparent from the illustrated embodiments and other explained embodiments, the present invention advantageously provides a pull-out hose device for use, which offers high operational comfort and reliable functionality. The pull-out hose device allows for intuitive operation by the user, particularly enabling the user to easily secure the hose in the desired pull-out position by refraining from further pulling at the desired hose position and unloading the hose from tension, thereby allowing the hose to return with minimal movement, i.e., retract, and the rotary lock is placed in its locked position. To unlock the rotary lock, the user only needs to pull the hose briefly again. This slight pull of the hose causes the locking pawl of the rotary lock to reach its retracted release position, after which the user can freely pull the hose further out or retract it to its retracted end position.

[0060] Pull-out hose devices are particularly suitable as sanitary pull-out hose devices for shower areas, sinks, washbasins, bathtubs, and kitchen sinks; however, they can be used in the same way for non-sanitary applications that require a corresponding pull-out hose device.

Claims

1. A pull-out hose device, in particular a sanitary pull-out hose device, having - a hose support (1), - a pull-out hose (2) which is held at the hose support (1) in a pull-out end position by a pull-out movement and in a retraction end position by a retraction movement opposite the pull-out movement, and - a rotation lock having a lock wheel (3) which is movable in rotation and a locking claw (4) which is elastically preloaded against the lock wheel (3) and is movable in oscillation about a locking claw axis (5), the lock wheel (3) being coupled in movement with the pull-out hose (2) in such a way that the lock wheel is rotated in a pull-out rotation direction (DA) with the pull-out movement of the pull-out hose (2) and is rotated in a retraction rotation direction (DE) opposite the pull-out rotation direction (DA) with the retraction movement of the pull-out hose (2), and - wherein the locking claw (4) releases the rotation of the lock wheel (3) in its pull-out rotation direction (DA) in a pull-out release position (AF), characterized in that - the locking claw (4) is displaceable by the lock wheel (3) by a rotation in its retraction rotation direction (DE) from the pull-out release position (AF) into a retraction locking position (ES) in which the locking claw locks a further rotation of the lock wheel (3) in its retraction rotation direction (DE), and - the locking claw (4) is displaceable by the lock wheel (3) by a rotation in its pull-out rotation direction (DA) from the retraction locking position (ES) into a retraction release position (EF) in which the locking claw releases a rotation of the lock wheel (3) in its retraction rotation direction (DE). The lock wheel (3) has a plurality of peripheral locking teeth (3z) which cooperate with the locking claw (4), wherein the locking claw (4) is displaceable by one of the locking teeth (3z) by a rotation of the lock wheel (3) in its pull-out rotation direction (DA) from the retraction locking position (ES) into the retraction release position (EF). The retraction locking position (ES) of the locking claw (4) is a clamping position of the locking claw (4) between the lock wheel (3) and a locking stop (6) of the rotation lock. The retraction release position (EF) of the locking claw (4) is a self-holding position of the locking claw (4) at a claw holding element (15) of the rotation lock. - wherein, The locking claw (4) is displaceable with its locking claw axis (5) along an axis guide track (7). The axis guide track (7) extends with a radial track direction component (7R) relative to the lock wheel (3). The displacement of the locking claw (4) from its pull-out release position (AF) into its retraction release position (EF) and / or from its retraction locking position (ES) into its retraction release position (EF) comprises a displacement of its locking claw axis (5) along the axis guide track (7). ​ ​ 2. The pull-out hose device according to claim 1, further characterized by ​ 3. The pull-out hose device according to claim 1 or 2, further characterized by ​ 4. The pull-out hose arrangement according to any one of claims 1 to 3, further characterized by ​ 5. The pull-out hose arrangement according to any one of claims 1 to 4, further characterized by ​ 6. The pull-out hose device according to claim 5, further characterized by ​ 7. A pull-out hose device according to claim 5 or 6, further characterized in that ​ 8. The pull-out hose arrangement according to any one of claims 5 to 7, further characterized by The locking pawl (4) abuts against an anti-rotation stop (8) of the rotation lock in its pulled-out release position (AF) and is displaced with its locking pawl axis (5) along the axis guide track (7) when the locking wheel (3) is rotated in its pulled-out rotation direction (DA).

9. The pull-out hose device according to any one of claims 1 to 8, further characterized by The displacement of the locking pawl (4) from its pulled-out release position (AF) to its retracted locking position (ES) comprises a pivoting about its locking pawl axis (5).

10. The pull-out hose device according to any one of claims 1 to 9, further characterized by The rotation lock is movably arranged along the fixed portion of the hose holder (1) in a coupled manner with the pulling-out and retraction movement of the pull-out hose (2), and the fixed portion of the hose holder (1) has a fixed retraction end position side pawl switching element (9) which displaces the locking pawl (4) from its retracted release position (EF) to its pulled-out release position (AF) in a switching position on the retraction end position side of the rotation lock moved along the hose holder (1).

11. The pull-out hose device according to any one of claims 1 to 10, further characterized by The rotation lock is movably arranged along the fixed portion of the hose holder (1) in a coupled manner with the pulling-out and retraction movement of the pull-out hose (2), and the fixed portion of the hose holder (1) has a fixed retraction end position side pawl switching element (9) which displaces the locking pawl (4) from its retracted release position (EF) to its pulled-out release position (AF) in a switching position on the retraction end position side of the rotation lock moved along the hose holder (1).

12. The pull-out hose device according to claim 10 or 11, further characterized by The hose holder (1) has a fixed pawl slide track (14) along which the locking pawl (4) is displaceable in a translational movement, wherein the pawl slide track (14) has a retraction end position side track shoulder (14a) which constitutes the retraction end position side pawl switching element (9) and / or a pull-out end position side track shoulder (14b) which constitutes the pull-out end position side pawl switching element (10).

13. The pull-out hose device according to any one of claims 1 to 12, further characterized by The hose holder (1) has a guide roller assembly with a fixed guide body (11), a roller holding part (12) which is guided in a displaceable manner at the guide body (11) with the pulling-out and retraction movement of the pull-out hose (2), and at least one guide roller (13) which is held in a rotatable manner at the roller holding part (12), with the pull-out hose (2) being guided at a hose bend (2B) abutting against the guide roller at a roller circumference of the guide roller, wherein the locking wheel (3) is rotationally coupled with the guide roller (13) and / or a winding roller (16) which is held in a rotatable manner at the roller holding part (12) and rotates with the translational movement of the roller holding part (12), and the locking pawl (4) is arranged at the roller holding part (12).

14. The pull-out hose device according to claim 13, further characterized by The locking pawl (4) is able to perform a translatory movement along the axis of the locking pawl (5) along the guide rail (7) and is held against the locking wheel (3) in the roller holder (12) in an elastically preloaded manner by means of a spring (20).

15. A pull-out hose device according to claim 13 or 14, further characterized by The hose holder (1) has a retraction device coupled with the guide roller assembly, the retraction device comprising the winding roller (16), a retraction element (17) wound on the winding roller and a pull-back spring unit (18).

Images