EP2189726A2 - Retractable grip for a door of a household device and door of a household device with such a grip - Google Patents

Abstract

The concealable gripping device (5) comprises a handle bar (6) and a bar holder (8,9), which is connected with the handle bar and a grip fastener (7). The bar holder is arranged relatively movable to the handle bar and to the grip fastener. A slide block (18,19,24,25) is provided, which is arranged at the bar holder, which is engaged to the movement control of the bar holder in a guide way (20,21,22,23,27,28,30,31) in the grip fastener.

Description

The invention relates to a retractable handle device with a handle bar and with bar holders, which are connected to the handle bar and a handle holder. Furthermore, the invention relates to a door for a household appliance with such a handle device.

In built-in stoves and ovens doors for closing a feed opening of a cooking chamber are known, on which the outside, a handle is arranged. In this regard, fixed handles are known which survive over the front surface of the door permanently. This can then easily entangle garments of operators and / or you can bump into it. In addition, such a configuration is relatively space-consuming.

From the DE 23 64 647 is a oven door known, which has a pivotable door handle. This is pivotable about an axis of rotation and can thus be folded or sunk only by a pivoting movement to the outside. Therefore, a relatively large amount of space is required to enable this movement, and relatively much space for the handles is also available in the sunk state.

From the DE 38 38 917 A1 is a closure device for the door of a hot air steam oven known. In an alternative embodiment it is provided that a handle device for the door has a handle bar and thus fixed and immovably connected holder for this handle bar, wherein the handle device can be pushed in a linear movement in the door or pulled out of this. In the retracted state, the handle device is recessed substantially in the door. Also for this embodiment, a relatively large amount of space is required. In addition, the accessibility is limited, so that the removal of the recessed handle can be done only very expensive and laborious.

It is an object of the present invention to provide a retractable handle device, which can be easily operated and is designed to save space.

This object is achieved by a grip device having the features of claim 1. Furthermore, this object is also achieved by a door for a domestic appliance having the features of claim 14.

A retractable handle device according to the invention comprises a handle bar and rod holder for holding this handle bar. The pole holders are connected to the handle bar and a handle holder. The rod holders are relatively movable to the handle bar and arranged relatively movable to handle holder and on a rod holder at least one sliding block is arranged, which engages for guiding the movement of a rod holder in a guide track of a handle holder. As a result of this embodiment of the retractable gripping device, the sinking process or the retraction process can be carried out with little effort and reliability. An obstruction, jamming or spreading can be avoided. In addition, a very component-minimized configuration can be provided by this embodiment of the handle device, which can also be realized compact and space-saving beyond.

Preferably, the handle holder has a slot-like receiving space into which the rod holders extend. On the one hand, components of the gripping device can thereby be arranged wear-resistant and protected against damage or other interferences, and moreover, the space requirement of the gripping device can be further reduced.

Preferably, a rod holder on its upper side at least two spaced-apart upper sliding blocks. Through the plurality of sliding blocks, the leadership of the rod holder can be improved and unstable brackets and an unstable guide can be avoided. As a result, the wear can be reduced.

Preferably, two separate upper guideways are formed on an upper cover of the receiving space and in each case an upper sliding block engages in one of upper guideways. Due to this at least duality of two guideways and two sliding blocks, the guide curve or the guideway can be optimized. This can be done in terms of space-saving as possible depression and extension of the handle bar and on the other hand with regard to minimal displacement in a direction parallel to the axis of the handle device. The entire movement during sinking or retracting can thus be done in the smallest possible space.

Preferably, a first upper sliding block is arranged at a front end of the rod holder and a second upper sliding block is positioned in the longitudinal direction of the rod holder approximately centrally on the rod holder at its upper side. Due to the relatively large spacing of the sliding blocks, the occurring position forces can be kept as small as possible.

It is preferably provided that a rod holder has at least two spaced-apart lower sliding blocks on a lower side. It is particularly preferred that at least one sliding block, preferably in each case two sliding blocks, are arranged both on the upper side and on the lower side. The advantages mentioned above are thereby further favored.

Preferably, two separate lower guideways are formed on a lower cover of the receiving space and in each case a lower sliding block engages in one of the lower guideways. Viewed in the vertical direction of the rod holder is thus performed with several sliding blocks both upwards and downwards in guideways, so that the retracting or outward movement particularly advantageous in terms of low wear and safe and reliable leadership without splaying and jamming and without tilting up or down or sideways.

In particular, it is provided that a first lower sliding block is arranged at a front end of the rod holder on the underside thereof and a second lower sliding block in the longitudinal direction of the rod holder is arranged approximately centrally on the underside of the rod holder.

It is preferably provided that the upper and the lower sliding blocks are arranged at correspondingly symmetrical positions on the top and bottom.

In particular, it is also provided that the guideways in the upper cover of the receiving space are arranged symmetrically over the guideways in the lower cover of the receiving space and thus the guideways are preferably arranged congruently when viewed from above or from below in the vertical direction. It is preferably provided that a guideway, in particular all guideways are formed curved at least partially. It is preferably provided that all guideways are curved over their entire length and preferably have the same direction of curvature. In an advantageous manner, it is provided that in each case two guideways per rod holder in the upper cover and the lower cover, the corresponding guideways in a cover in the longitudinal direction of the handle holder are arranged partially overlapping. It is essential, however, that the guideways do not touch each other and are thus formed contactlessly and separately from one another over the entire length.

Preferably, a rod holder has an axis of rotation which is oriented perpendicular to the sinking direction and is fixedly arranged on the handle holder. In addition to the sliding blocks and preferably several guideways per rod holder thus the stationary axis of rotation is additionally arranged. To these, the rod holder can then rotate in its sinking movement or during its outward movement.

Preferably, a rod holder has an axis of rotation, which is oriented perpendicular to the sinking direction and is fixedly arranged on the handlebar. In particular, it is thus provided that the rod holder has fixed axes of rotation around which it can rotate and which are fixedly arranged on different components. On the one hand, this increases the stability and stabilizes the desired movement and improves the guiding movement of the sliding blocks in the guideways. It is preferably provided that the rod holders are connected to a coupling mechanism for the movement synchronization of the two rod holders. In particular, such a coupling mechanism on two push rods, which are each connected to a rod holder and coupled via a gear device which is associated with the coupling mechanism. By means of these push rods it is thus possible to synchronize the two rod holders. This is particularly advantageous because the handle bar preferably moves parallel to the front of the handle device, even if it is operated off-center. The synchronization is preferably via a gear of the gear device, which can serve for damping during extension of the handle bar at the same time. Preferably, the gear is connected to a damping device, in particular a rotary damper. As a result, the unlocked handle or the handlebar moves slowly from the depressed end position or the rest position in the extended position or the operating position.

Preferably, the retractable handle device has a locking device for locking the retracted position of the handle bar, wherein the locking device comprises a sliding block which engages in a slide track, in particular a closed heart cam shape having cam track, the locking device. Thereby, the sunken state of the handle bar and thus the rest position can be fixed.

It can be provided that in each rod holder, a spring element, in particular a leg spring, is arranged, by means of which the handle bar can be pressed into the operating position. Preferably, the sliding block of the locking device is arranged centrally in the region of the gear device on the handlebar. The slide track of the locking device is preferably arranged in the lower cover of the handle holder and preferably positioned next to the gear device with the gear and preferably the rotary damper.

By two guideways on the top and the bottom of the receiving space per rod holder, the position of the rod holder can be reliably held and guided and the handle bar and thus the rod holder learn undesirably no right-left shifts.

Preferably, the guideways are shaped to allow linear movement of the handle bar, in particular not crossing each other.

By this embodiment of the retractable handle device, a relatively wide handle bar may be formed, which nevertheless requires a very small footprint for their movement to move out and sinking. In addition, only a coupling mechanism is required for motion synchronization, which is favored in particular by the sliding blocks and the guideways.

Preferably, the handle device, in particular the handle bar, retractable about an axis parallel to the handle bracket. Thus, it can also be a movement to that effect, which not only allows sinking and retracting in the linear direction of movement, but also ensures a rotation about said axis in a rotary motion. The possibilities of movement can thereby be further increased considerably, which is advantageous in particular in the case of gripping devices which are mounted relative to the door to which they are attached. Especially when unfolding a door down can thus be ensured that the handle bar is always facing the user or observer and he can grab them at any time front.

A door according to the invention for a household appliance comprises a gripping device according to the invention or an advantageous embodiment thereof. In particular, it is provided that the gripping device, in particular the handle bar, is pivotable about an axis parallel to the handle holder. Preferably, this axis is also parallel to the plane of a front panel of the door to which the handle device is attached.

This pivotability of the handlebar can be ensured by a pivoting device, which may be, for example, a cable pulling device.

Advantageous embodiments of the retractable handle device according to the invention are to be regarded as advantageous embodiments of the door according to the invention.

Preferably, the door for a household appliance for preparing food, such as an oven, a steam cooker, a microwave oven or may be provided. In principle, however, the retractable handle device is suitable for any domestic appliance which has a door.

Further features of the invention will become apparent from the claims, the figures and the description of the figures. The features and combinations of features mentioned above in the description as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figures can be used not only in the respectively specified combination but also in other combinations or in isolation without the scope of the invention to leave.

Fig. 1

eine schematische perspektivische Darstellung eines Hausgeräts mit einer Tür einer daran angeordneten Griffvorrichtung;

Fig. 2

eine perspektivische Darstellung der Griffvorrichtung in einer ersten Betriebsposition; und

Fig. 3a bis 3c

Draufsichtdarstellungen der Griffvorrichtung gemäß Fig. 2 in drei verschiedenen Betriebsstellungen.

An embodiment of the invention will be explained in more detail with reference to schematic drawings. Show it:

Fig. 1

a schematic perspective view of a household appliance with a door of a handle arranged thereon;

Fig. 2

a perspective view of the handle device in a first operating position; and

Fig. 3a to 3c

Plan view of the handle device according to Fig. 2 in three different operating positions.

In the figures, identical or functionally identical elements are provided with the same reference numerals.

In Fig. 1 is shown in a schematic representation of a domestic appliance, which is designed as a baking oven 1. The oven 1 comprises a cooking chamber 3 with a front loading opening 4, which can be closed by a door 2. The door 2 is pivotable in its lower side via a horizontal and parallel to the oven base extending axis of rotation. On the door 2, a handle device 5, which is designed as a retractable handle device, is arranged on the outside. The gripping device 5 can be pivoted about an axis parallel to the pivot axis of the door 2. In particular, a handle bar of the handle device 5 accordingly be pivoted. When folding down the door 2 in the at least partially open position can thus be achieved that the handle bar of the handle device 5 is always facing the user and performs a corresponding pivoting movement about the axis.

In Fig. 2 is a perspective view of the handle device 5 is shown. In this case, an operating position is shown in which a handle bar 6 is shown in the fully extended state. The retractable handle device 5 includes, in addition to the handle bar 6, a handle holder 7 disposed on the front side of the front plate-like part of the door 2. The handle holder 7 may also be arranged integrally in this front panel of the door 2 or even be part of this front panel.

The grip device 5 further comprises two rod holders 8 and 9, which are arranged relatively movable to the handle bar 6 and relatively movable to the handle holder 7. The rod holders 8 and 9 are designed as levers to ensure the sinking movement of the handle bar 6 and / or the extension movement of this handle bar 6.

The handle holder 7 has a receiving space 10, in which the bar holders 8 and 9 hineinerstrecken. As in Fig. 2 can be seen by the partially transparent representation of the handle holder 7, the receiving space 10 is bounded at the top by an upper cover 11 and down through a lower cover 12. The covers 11 and 12 are formed as a kind of plate-like strips.

Between these covers 11 and 12, the rod holders 8 and 9 extend into the receiving space 10. The rod holder 11 is connected to a first axis of rotation 13, which is arranged fixedly on the handle holder 7.

The handle bar 6 can perform their movement linearly in the y-direction and sunk or driven out. The rod holders 8 and 9 have in the receiving space 10 facing elevations 13 and 15.

As already too Fig. 1 addressed, the handle bar 6 or the entire handle device 5 also perform a pivotal movement about the x-axis.

Furthermore, the rod holder 8 comprises an axis of rotation 14 about which it can perform a rotational movement. The axis of rotation 14 is fixedly positioned on the handle bar 6. In an analogous manner, the second rod holder 9 has a rotation axis 16. On a top 17 of the first rod holder 8 two separate and spaced from each other arranged Kulisssensteine 18 and 19 are arranged. The sliding blocks 18 and 19 are arranged in that part of the rod holder 8 on the upper side 17, which extends in the receiving space 10.

In a corresponding symmetrical arrangement, two sliding blocks, not shown, are arranged on an underside of the rod holder 8, which is the top 17 opposite. The sliding blocks arranged on the underside of the rod holder 8 are arranged at the positions at which the sliding blocks 18 and 19 are positioned on the upper side 17.

In the upper cover 11, two guide tracks 20 and 21 are arranged. Both guideways 20 and 21 are curved over their entire length and overlap in the x-direction at least partially. The guideways 20 and 21 do not touch and also do not intersect. The first sliding block 18 on the upper side 17 engages in the first guide track 20, wherein the second sliding block 19 engages on the upper side 17 in the second guide track 21. In accordance with symmetrical manner, two slide tracks 22 and 23 are also incorporated in the lower cover 12, which are arranged in a congruence with the guide tracks 20 and 21 in the upper cover 11 in a vertical view and thus when viewed in the z-direction substantially. The sliding blocks arranged on the underside of the rod holder 8 each engage in one of the guide tracks 22 and 23. In a corresponding manner, the sliding blocks 24 and 25 are formed on an upper side 26 of the rod holder 9. The sliding block 25 engages in a guideway 27, wherein the sliding block 24 engages in a further guideway 28. The guideways 27 and 28 are symmetrical to the guideways 20 and 21 along a in the y-direction by the handle device 5 centrally extending symmetry axis. In an analogous manner, two sliding blocks are also arranged on a lower side 29 of the rod holder 9, which are positioned at the opposite position to the sliding blocks 24 and 25. The arranged on the bottom 29 sliding blocks also engage in guideways 30 and 31, which Guideways 30 and 31 are again formed congruently under the guideways 27 and 28 in the lower cover 12.

In addition, a coupling mechanism 32 is arranged in the slot-like receiving space 10. The coupling mechanism 32 comprises a first push rod 33, which is connected to the first rod holder 8. The first push rod 33 has, at the end opposite the rod holder 8, a tooth region 34 which meshes with a toothed wheel 37. In addition, the coupling mechanism 32 has a second push rod 35, which is connected to the second rod holder 9. At the end opposite the rod holder 9, the second push rod 35 has a toothed region 36, which also meshes with the gear 37. By this coupling mechanism 32, the movement of the rod holder 8 and 9 can be synchronized. The gear 37 is also connected to a damping device 38, which is preferably a rotary damper, so that the movement is damped. Adjacent to the gear 37 and to the tooth portion 34, a component is provided with a locking device 39. The locking device 39 serves to lock the rest position of the handle bar 6 and thus the retracted position. The locking device 39 has a component 40 which is fixedly arranged in the handle holder 7 and a heart-shaped slide track 41 (FIG. Fig. 3a and 3b and 3c ). In this slide track 41 engages in the locked state, a sliding block 42, which is arranged on the handle bar 6.

The handle bar 6 is preferably formed hollow on its handle holder 7 side facing. Thereby, in the rest position of the handle bar 6 and thus in the depressed state, the front of the handle bar 6 can be arranged flush with the front of the handle holder 7. In this depressed state of the handle bar 6 then extend the upper cover 11 and the lower cover 12 in this cavity of the handle bar 6 in. Not only this, a particularly space-minimized and compact concept of the retractable handle device 5 can be made possible.

In the Fig. 3a to 3c are plan views of the handle device 5 shown in different operating positions.

So shows Fig. 3a a top view of the fully extended position of the handle bar 6, as well as in perspective already in Fig. 2 is shown.

In Fig. 3a Furthermore, two leg springs 43 and 44 are shown, which are arranged in the region of the second rotation axes 14 and 16 of the rod holders 8 and 9. About this leg springs 43 and 44, the handle bar 6 can be pressed into the operating position. In the rest position of the handle bar 6, this is held by the already explained locking mechanism.

The per rod holder 8 and 9 respectively four guideways ensure that the rod holders 8 and 9 do not tip and stable out. In addition, the sliding blocks can ensure by their relatively widely spaced positioning that the bearing forces that remain as small as possible.

In Fig. 3b an operating position is shown in which the handle bar 6 is shown between the rest position and the extended operating position. It can be seen how the rod holders 8 and 9 move and how they are guided by the shape of the guideways and the rotation about the two axes of rotation.

Through this overall mechanism, a movement can be achieved parallel to the front during the movement of the handle bar 6, even if not centered on the handle bar 6 and thus pressed off-center. Both the retraction and the extension is thus preferably linear in the y-direction.

In Fig. 3c is the rest position and thus the fully sunken position of the handle bar 6 shown. The above-mentioned flush positioning of the front side of the handle bar 6 with the front side of the handle holder 7 can be seen. In addition, it is shown that the upper cover 11 and the lower cover 12 protrude into the cavity of the handle bar 6.

Claims (15)

Retractable handle device with a handle bar (6) and with bar holders (8, 9) which are connected to the handle bar (6) and a handle holder (7), characterized in that the bar holders (8, 9) are relatively movable to the handle bar (6 ) and to the handle holder (7) are arranged and on a rod holder (8, 9) at least one sliding block (18, 19, 24, 25) is arranged, which for the movement guidance of a rod holder (8, 9) in a guide track (20, 21 , 22, 23, 27, 28, 30, 31) in the handle holder (7) engages. Retractable handle device according to claim 1, characterized in that the handle holder (7) has a slot-like receiving space (10) into which the bar holders (8, 9) extend. Retractable handle device according to claim 1 or 2, characterized in that a rod holder (8, 9) on an upper side (17, 26) at least two spaced-apart upper sliding blocks (18, 19, 24, 25). Retractable handle device according to claim 3, characterized in that on an upper cover (11) of the receiving space (10) has two separate upper guide tracks (20, 21, 27, 28) are formed and in each case an upper sliding block (18, 19, 24, 25 ) engages in one of the upper guide tracks (20, 21, 27, 28). Retractable handle device according to claim 3 or 4, characterized in that a first upper sliding block (18, 19, 24, 25) at a front end of the rod holder (8, 9) is arranged and a second upper sliding block (18, 19, 24, 25) is arranged centrally in the longitudinal direction of the rod holder (8, 9). Retractable handle device according to one of the preceding claims, characterized in that a rod holder (8, 9) on a lower side (29) has at least two mutually spaced lower sliding blocks. Retractable handle device according to claim 2 and 6, characterized in that on a lower cover (12) of the receiving space (10) has two separate lower guide tracks (22, 23, 30, 31) are formed and in each case a lower sliding block in one of the lower guide tracks ( 22, 23, 30, 31) engages. Retractable handle device according to claim 6 or 7, characterized in that a first lower sliding block at a front end of the rod holder (8, 9) is arranged and a second lower sliding block in the longitudinal direction of the rod holder (8, 9) is arranged centrally. Retractable handle device according to one of the preceding claims, characterized in that a rod holder (8, 9) has elevations (13, 15) which extend into the receiving space (10). Retractable handle device according to one of the preceding claims, characterized in that a rod holder (8, 9) has a second axis of rotation (14, 16), which is oriented perpendicular to the sinking direction and is fixedly arranged on the handle bar (6). Retractable handle device according to one of the preceding claims, characterized in that the rod holders (8, 9) with a coupling mechanism (32) for movement synchronization of the rod holder (8, 9) are connected. Retractable handle device according to claim 11, characterized in that the coupling mechanism (32) has two push rods (33, 35) which are each connected to a rod holder (8, 9) and coupled via a gear device (34, 36, 37). Retractable handle device according to one of the preceding claims, characterized by a locking device (39) for locking the sunk position of the handle bar (6), which comprises a sliding block (42) which engages in a slide track (41), in particular a closed-loop cam track, the locking device (32). Door for a domestic appliance with a retractable handle device (5) according to one of the preceding claims. Door according to claim 14, characterized in that the handle device (5), in particular the handle bar (6), about an axis parallel to the handle holder (7) is pivotable.

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