LOCKING DEVICE FOR MOVING PARTS OF FURNITURE
Patent Information
- Authority / Receiving Office
- MX · MX
- Patent Type
- Patents
- Current Assignee / Owner
- PAUL HETTICH GMBH & CO KG
- Filing Date
- 2023-04-13
- Publication Date
- 2026-05-19
Smart Images
Figure MX434419B0
Abstract
Description
LOCKING DEVICE FOR MOVABLE PARTS OF FURNITURE CQCtrnn / cznz / e / YiAi FIELD OF INVENTION The present invention relates to a locking device for movable furniture parts, with a guide rail, in which a plurality of locking elements are held movably, several bolts, which can be coupled in each case with a movable furniture part, and which can be moved between a locked position and an unlocked position, and in a locked position they lock an opening of the movable furniture part, wherein the locking elements can be moved to a closed position, in which the locking elements are locked on all the bolts in a movement to the unlocked position, and the locking elements in a tilt-protection position can be moved by one of the bolts from the locked position along the guide rail, and in the case of positioning one of the bolts in the unlocked position, the movement of all the other bolts to the unlocked position is blocked.such that only one of the furniture parts can be moved into the open position. BACKGROUND OF THE INVENTION EP 2 239 402 A2 discloses an interlocking arrangement for furniture, in which a plurality of interlocking elements are held movably on an interlocking rod. An extendable furniture part can be locked by means of these locking elements, ensuring that only one of several extendable furniture parts moves to the protruding open position. This provides protection against tilting, for example, in the case of rolling containers. However, a disadvantage of this interlocking arrangement is that only one push element can be locked in the open position at a time, which is particularly inconvenient when disassembling the furniture, for example, for moving it. BRIEF DESCRIPTION OF THE INVENTION Therefore, the object of the present invention is to create a locking device for the movable part of furniture, which is flexible and also allows simultaneous unlocking of all movable parts of furniture in a simple manner. This object is resolved with a locking device with the characteristics of claim 1. The locking device according to the invention comprises several bolts, which can be coupled in each case with a movable part of furniture and can be moved between a locking position and an unlocking position, wherein in a locking position an opening of the movable part of furniture is locked and in an unlocking position an opening movement is permitted. The coupling between the bolt and the moving part of the furniture can be configured, for example, as disclosed in DE 20 2009 000 050 U1. The bolt 5 only moves slightly between the locked and unlocked positions, for example, less than 30 mm, while the moving part of the furniture only engages the bolt for a small portion of its travel and can otherwise move freely. Locking elements can be moved along the guide rail via bolts. In the locked position, these locking elements prevent all bolts from moving to the unlocked position. In the tilt-protection position, only one bolt can be moved from the locked to the unlocked position. This movement displaces the locking elements at least partially, preventing all other bolts from moving to the unlocked position. Only one movable part of the cabinet can then be moved to an open position.The locking elements can be moved to a release position, a third position alongside the locked and tilt-protection positions. In this position, all the bolts can be moved from the locked to the unlocked position on or within a locking element receptacle. When all the bolts are moved from the locked to the unlocked position, all movable parts of the furniture can be moved independently of each other in the opening direction. This is useful, for example, when disassembling the furniture and removing movable parts, such as drawers, for a specific purpose. This increases the flexibility of the locking device and improves user convenience. Preferably, the locking device has at least one switching mechanism, such as a lock, by means of which the locking elements can be moved along the guide rail between the locked position, the tilt-protection position, and the released position. The user therefore only needs to adjust the switching mechanism, for example, the lock, to one of the three positions, for example, by means of a rotary motion, to achieve a complete interlock, a complete opening for all movable parts of the furniture, or a tilt-protection function, in which only one individual movable part of the furniture can be moved to the open position at a time. Through the switching mechanism, for example, the guide rail can be moved vertically with a stop for the locking elements, such that the locking elements move relative to the bolts, particularly in the vertical direction. In a preferred configuration, however, it is also possible to use a second, separate switching mechanism solely for controlling the release position, for example, to prevent unintentional incorrect operation. This second switching mechanism can be concealed from or separate from the first switching mechanism and / or controlled by separate actuating elements. Mechanical or electromechanical locks, switching levers, bolts, or latches can be employed as the switching mechanism. These can be actuated directly or indirectly, for example, via levers, cable controls, or other transmission means, and can be moved to a different position. Preferably, each bolt is configured as a drive plate, which can be moved via a self-locking mechanism between the locked and unlocked positions. The bolt then moves only a short distance along the locking elements. The bolt can remain entirely within the guide rail during movement between the unlocked and locked positions in the plan view, thus ensuring a compact structure. Each locking element preferably has a tilt bevel, and one of the pins can be moved in the tilt-protect position against the tilt bevel to displace the locking element and the locking elements arranged above it along the guide rail. Consequently, with little effort, the locking elements can be displaced through the tilt bevel, moving one of the pins from the locked position to the unlocked position. In this position, all the other pins are locked in a single movement to the unlocked position. Preferably, each locking element has a wall to prevent a bolt from moving to the unlocked position when the bolt is locked. This wall acts as a stop for the bolt, which in turn locks the moving part of the furniture in the locked position. Each locking element preferably further comprises a receptacle, for example, a channel-shaped receptacle, in which the bolt can be moved to the unlocked position. Consequently, each bolt can be moved to the unlocked position in one of the locking elements within the receptacle, thereby permitting movement of the movable part of the furniture in the opening direction. For a flat locking device structure, the wall and tilt bevel can be configured to protrude from the guide rail. The receptacle with the channel, on the other hand, is fixed between the wall and the tilt bevel, creating a groove-shaped channel into which the bolt can be inserted if necessary. The locking device according to the invention is preferably used in a piece of furniture comprising a furniture body with several movable furniture parts in the form of drawers that can be locked to the furniture body by means of the locking device. CQCtrnn / cznz / e / YiAi Also, for example, workshop, consultation or laboratory equipment, for which the use of mobile drawers or pushing elements is proposed, are understood as furniture according to the invention. BRIEF DESCRIPTION OF THE FIGURES The invention is explained in more detail below with reference to the accompanying FIGURES and an exemplary embodiment. It is shown: FIGURE 1 is a perspective view of a piece of furniture according to the invention with a locking device; FIGURE 2 is a view of the furniture in FIGURE 1 without a push element; FIGURE 3 is a side view of the locking device in FIGURE 2; FIGURE 4 is a separate view of the parts of the locking device of FIGURE 2; Figures 5A to 5G are various detailed views of the locking device in different positions, and FIGURES 6A and 6B are two detailed views of a locking element of the locking device. DETAILED DESCRIPTION OF THE INVENTION A piece of furniture 1 comprises a furniture body 2, in which pull guides 4 are fixed to opposite side walls. Each extension guide 4 comprises a stationary rail 5 and a sliding rail 6, between which at least one central rail may be optionally provided to extend the extension. An automatic closing mechanism 7 and / or an ejection device for withdrawing or ejecting a movable furniture part 3 in the form of a drawer may be provided in the extension guide 4. On at least one side wall of the furniture body 2, a locking device 10 is provided for movable furniture parts 3, by means of which it can be controlled whether or not a movable furniture part 3 can be moved to an open position via the pull-out guide 4. The locking device 10 comprises a guide rail 11, which is inserted into a groove 12 in the side wall of the furniture body 2 and which can be moved vertically via a switching mechanism 15. In this modality, a switching mechanism 15 is used to adjust all the switching positions of the guide rail 11; optionally, the guide rail 11 can also be moved via several switching mechanisms 15. The guide rail 11 extends in this case through several pull guides 4, as shown in FIGURES 2 and 3. Only two pull guides 4 are shown, where more than two pull guides can also be mounted on a side wall of the cabinet body 2. As shown in FIGURE 4, the stationary rails 5 of the extraction guide are not mounted directly to the side wall, but via an intermediate connection of a spacer 13, specifically a plate. The spacer 13 has a recess in the area of a groove 12 for the guide rail 11. A plurality of locking elements 20, produced, for example, as molded bodies of plastic or metal, are movably retained on the guide rail 11. The locking elements 20 can be moved in the mounted position, and the spacers 13 prevent the stationary rail 5 from locking the locking elements 20. It is also possible to set the groove 12 deeper and dispense with the spacers 13, or to guide the guide rail 11 through other guide elements, particularly linear bearings, instead of in a groove 12. The switching mechanism 15 in this design comprises a mechanical lock with a rotating knob, by means of which a connecting element 14, mounted on a pin 19 in an elongated hole 18, can be moved vertically. The guide rail 11 can be raised or lowered via the connecting element 14. A stop 30 (FIGURE 3) is provided in the lower area of the guide rail 11, ensuring that the locking elements 20 move together with the guide rail 11. The pins 16, which can be engaged with the moving part of the cabinet 3, are secured in the locking elements 20 and can be moved horizontally between a locked and an unlocked position. In this respect, the pins 16 only move along a short travel range, for example, less than 30 mm, and only engage with the moving part of the cabinet at the beginning of the extension movement. Engagement can be achieved, for example, via an automatic locking mechanism, as disclosed in DE 20 2009 000 050 U1. Other engagement systems are also possible via the drive plate or other mechanisms. Figures 5A to 5G show the functionality of the locking device in different positions of the bolts 16 and the locking elements 20. In FIGURE 5A, the locking device 10 is in a closed position, in which all movement of the bolts 16 is prevented by locking elements 20 from the locked position on the left side of the guide rail 11 to an unlocked position on the right side of the guide rail 11. This is because, through the switching mechanism 15 and the connecting element 14, the guide rail 11 is raised, such that all the bolts 16 are fixed against a wall 22 of the locking element 20, which blocks movement in a horizontal direction to the right in FIGURE 5A. If the switching mechanism 15 is moved to a tilt protection position, for example, by turning a knob 90°, the locking element 14 is lowered. As shown in FIGURE 5B, all the bolts 16 are no longer opposite the wall 22 in a locking element 20, but are adjacent to a tilt bevel 23 of the locking element 20 above. Each tilt bevel 23 is in this case aligned at an angle to the vertical and the horizontal. If one of the movable parts of furniture 3 is now moved in the opening direction, for example, the upper part of furniture 3, according to FIGURE 5C, pin 16 moves from the locked position to the unlocked position on the right side of the guide rail 11. Through this movement of pin 16, the movable part of furniture 3 is released and can now be moved in the opening direction. In this regard, the movement of bolt 16 against the tilting bevel 23 displaced the corresponding locking element 20 upwards, and all the locking elements 20 above it also moved upwards, depending on the position of bolt 16. Consequently, the upper locking element 20 is directly adjacent to a bar 17 on the connecting element 14 and cannot be moved further upwards. If a force is now applied to the lower bolt 16 through the moving part of the furniture 3 to move it from the locked to the unlocked position, the bolt 16 presses against the tilting bevel 23 and attempts to further raise the locking elements 20 arranged above it.However, this movement is blocked by the upper bolt 16, which is in the unlocked position between two adjacent locking elements 20, such that it is ensured that only one individual moving part of furniture 3 can come out of the furniture body 2 at a time, leading to effective protection against tilting. Figure 5D shows the position in which the upper bolt 16 moves back from the unlocked position to the locked position, as indicated by the arrow. The locking element 20 now makes contact with the bolt 16 again via the tilting bevel 23 and can move downwards due to gravity along the guide rail 11. Alternatively, a force accumulator can be arranged on the bar 17 to facilitate this movement, returning the locking elements 20 to their extended position. When the bolt 16 is locked, another movable part of the cabinet 3 can then be moved, and consequently, the bolt 16 coupled with it can be moved to the unlocked position. In FIGURE 5E, the locking device 10 is shown in the tilt protection position, in which one of the bolts 16 can optionally be moved to the unlock position, where the corresponding locking element then moves upwards through the tilt bevel 23. If the user wishes to disassemble the movable furniture parts 3 and move them all simultaneously or independently in the opening direction, the connecting element 14 and the guide rail 11 can be lifted via the or an additional switching mechanism 15, as shown in FIGURE 5F. For this purpose, in the switching mechanism 15 a knob can be turned, for example, 90°, such that the connecting piece 14 moves along the pin 19 within the elongated hole 18 in the connecting piece 14. In this raised release position, all the pins 16 are in the area of a receptacle 24 in a locking element 20.The receptacle 24 allows simultaneous movement of all pins 16 from the locked position on the left side of the guide rail 11 to the unlocked position on the right side of the guide rail 11, as shown in FIGURE 5G. Both pins 16 have been moved to the unlocked position and are located inside the receptacle 24 in a locking element 20. The terms right, left, and up, down refer only to the representation in FIGURES 1 to 5 and may be changed depending on the installation situation. Figures 6A and 6B show in detail a locking element 20 which, for example, can be produced as a body formed from plastic or metal and can be constructed in one or more pieces. Each locking element 20 comprises guide bars 21, which are held by one edge on the guide rail 11, such that the locking element 20 is held linearly displaceable along the guide rail 11. The locking element 20 in this case comprises a plate-shaped section, which is fixed to the guide rail 11. From this plate-shaped section projects a protrusion with a wall 22, which in a closed position blocks all the bolts 16 from movement to the unlocked position. Furthermore, the locking element 20 comprises a tilting bevel 23, which is configured at a lower end and protrudes from the guide rail 11, such that the bolt 16 can displace the locking element 20 upwards along the guide rail 11 during a movement from the locked position to the unlocked position. Between wall 22 and the tilt bevel 23 is channel-shaped receptacle 24, configured in a groove, which allows for a receptacle for bolt 16. When bolts 16 are fixed at the height of receptacle 24, all bolts 16 can be moved simultaneously from the locked position to the unlocked position. In the example configuration shown, only two moving parts of furniture 3 are provided as push elements, which respectively move a bolt 16. Of course, it is also possible to use the locking device for more than two moving parts of furniture 3. The locking device 10 can be moved via an individual switching mechanism 15 to three positions: the tilt protection position, the closed position, and the released position. Alternatively, the release position can be provided via a separate lever or actuating element, such that only the closed and tilt protection positions can be adjusted via the switching mechanism 15. List of reference signs Furniture. Furniture body. Moving part of furniture. Extraction guide. Stationary rail. Sliding rail. Automatic closing mechanism. Locking device. Guide rail. Slot. Separator. Joining element. Switching mechanism. Pin. Bar. Elongated hole. Pin. Locking element. Guide bar. Wall. Bevel tilt. Receptacle. Stop
Claims
1. Locking device (10) for movable furniture parts (3), comprising: a) a guide rail (11) on which a plurality of locking elements (20) are movably retained; b) several bolts (16) each capable of engaging with a movable furniture part (3) and movable between a locked position and an unlocked position, and in a locked position locking an opening of the movable furniture part (3); c) wherein the locking elements (20) can be moved to a closed position in which all the bolts (16) are locked by the locking elements (20) in a movement to the unlocked position;d) and the locking elements (20) can be moved into a tilt-protection position via one of the bolts (16) from the locked position to the unlocked position along the guide rail (11), and in the case of positioning one of the bolts (16) in the unlocked position, the movement of all the other bolts (16) to the unlocked position is blocked, such that only one of the movable furniture parts (3) can be moved to an open position, characterized in that the locking elements (20) can be moved to a release position, in which all the bolts (16) can be moved from the locked position to the unlocked position on or in a receptacle of a locking element (20).; 2. The locking device according to claim 1, characterized in that the locking device (10) has at least one switching mechanism (15), by means of which the locking elements (20) can be moved on the guide rail (11) between the closed position, the tilt protection position and the release position.
3. The locking device according to claim 1, characterized in that the locking device (10) has a first switching mechanism (15), by means of which the locking elements (20) can be moved on the guide rail (11) between the closed position and the tilt protection position and has a second switching mechanism (15), by means of which the locking elements (20) can be moved on the guide rail (11) between the tilt protection position and the release position.
4. The locking device according to claim 2 or 3, characterized in that the guide rail (11) can be moved vertically via the switching mechanism (15) with a stop (30) for the locking elements (20).
5. The locking device according to any of the preceding claims, characterized in that each bolt (16) is configured as a drive plate that can be moved by means of a self-locking mechanism (7) between the locked position and the unlocked position. pQCfrnn / cznz / e / YiAi 6. The locking device according to any of the preceding claims, characterized in that each locking element (20) has a tilt bevel (23) and in the tilt protection position a bolt (16) can be moved against the tilt bevel (23) to displace upwards the locking element (20) and the locking elements (20) arranged above it along the guide rail (11).
7. The locking device according to any of the preceding claims, characterized in that each locking element (20) has a wall (22) for locking in the closed position a movement of a bolt (16) to the unlocked position.
8. The locking device according to any of the preceding claims, characterized in that each locking element (20) has a receptacle (24) configured as a channel and the bolt (16) can be moved along the channel to the unlocked position.
9. The locking device according to any of claims 5 to 7, characterized in that the wall (22) and the tilting bevel (23) are configured to protrude from the guide rail (11).
10. The locking device according to any of claims 5 to 8, characterized in that the receptacle (24) for the bolt (16) is arranged between the wall (22) and the tilting bevel (23) in the locking element (20).
11. Furniture (1) with a furniture body (2) and several movable furniture parts (3) in the form of drawers that can be locked by means of a locking device (10).