Brake mechanism for telescopic rail systems
The brake mechanism with a biased hook, notches, and drive piece decelerates and dampens the transition in telescopic rail systems, addressing uncontrolled movements and enhancing durability.
Patent Information
- Application Number
- PCT/TR2024/050029
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-01-15
- Publication Date
- 2025-07-24
AI Technical Summary
Uncontrolled movements of telescopic rail systems in furniture drawers cause damage and reduce service life due to uncontrolled opening and closing actions.
A brake mechanism with a hook that moves between positions, biased by an elastic means, engages with notches, and is driven by a drive piece to decelerate and dampen the transition from open to closed positions, using a damper to resist the biasing force.
The mechanism smoothes the transition from open to closed positions, enhancing the durability and service life of telescopic rail systems by providing controlled and smooth closure.
Smart Images
Figure TR2024050029_24072025_PF_FP_ABST
Abstract
Description
[0001] BRAKE MECHANISM FOR TELESCOPIC RAIL SYSTEMS
[0002] Technical Field
[0003] The present disclosure relates to brake systems for furniture drawer telescopic rails. In particular, the present disclosure relates to a brake mechanism according to the preamble of appended claim 1.
[0004] Prior Art
[0005] In furniture industry, drawers and corresponding furniture pieces or bodies can be connected to one another via telescopic rail systems. Telescopic rail systems include a plurality of rails that are movable relative to one another along a main axis.
[0006] Uncontrolled conclusions of opening and closing actions cause damage on building parts, or at least reduce service life of such systems.
[0007] Summary
[0008] Primary object of the present invention is to overcome the above-mentioned shortcomings of the prior art. Another object of the present invention is to propose a brake mechanism for smooth closure of a furniture drawer telescopic rail system.
[0009] These objects are achieved with the brake mechanism defined in the appended independent claim.
[0010] The brake mechanism comprises a main body for being fixed on a first rail that can be mounted on an inner side surface of a piece of furniture. The main body is provided with a hook that is movably arranged on the main body, such that the hook can be reciprocated between a first and a second position under one or more forces along a main axis. The hook is arranged to be releasably engage a locus on the main body when brought to the second position, for example, by snagging a notch on the main body. The hook is further arranged to disengage from said locus when hit by a drive piece in a direction from the second position towards the first position, that is, towards a first end of the main body. The hook is biased towards a first end of the main body, thus, towards the first position; therefore, the hook is arranged to automatically transit from the second position to the first position upon disengaging from said locus.
[0011] The brake mechanism is arranged to dampen the transition of the hook from the second position to the second position. As an example to this arrangement, the brake mechanism can further comprise one or more dampers that are arranged to extend in accordance with the transition of the hook from the first position to the second position, and to provide resistance against the bias that is exerted onto the hook towards the first end.
[0012] The brake mechanism can be considered to further comprise a drive piece for being fixed on a second rail that is telescopically movable relative to the first rail. The drive piece is arranged for driving the hook from the first position and second position when forced away from the first end against the bias. The drive piece is further arranged to, upon approaching and hitting the hook in a direction towards the first end, release the hook from the second position and engage the hook to move along with the hook from the second position to the first position.
[0013] In several embodiments, the present application discloses a brake mechanism that is arranged for decelerating a movement of an elongate first rail that extends along a main axis at transition, relative to an elongate second rail, from an open position to a closed position. The brake mechanism comprises a main body arranged to be fixedly attached to the first rail. The main body comprises an end portion. The break mechanism further comprises one or more hooks that are arranged to be axially movable relative to the main body between a first position and a second position that is distal to the end portion relative to the first position. The break mechanism further comprises one or more protrusions in fixed mechanical communication with the hook. The break mechanism further comprises one or more elastic means for axially biasing the hook towards the end portion. The break mechanism further comprises one or more notches that are arranged to engage with the hook when taking the second position. The break mechanism further comprises one or more drive pieces arranged to be fixedly attached at the second rail. The drive piece is provided with one or more indentations arranged for catching and axially driving the hook away from the end portion at transition to the open position. The break mechanism further comprises one or more dampers provided with a damper body and an elongate shaft in mechanical communication with the hook; such that the shaft and hook make substantially identical translational movements at transitions between the first position and second position.
[0014] The present disclosure enables that the transition from the open second position to the closed first position is smoothened by means of the damper. So, an effective braking action takes place at concluding the transition to the closed position.
[0015] The end portion can be arranged to be aligned with the first end of the first rail when attached to the first rail.
[0016] The hook can be arranged to oppose the second rail when in the closed position.
[0017] The protrusion can be arranged to oppose the second rail when in the closed position.
[0018] The break mechanism can further comprise one or more hook holders for conducting mechanical force of the elastic means to the hook.
[0019] The hook and hook holder can be sized and shaped such that the hook is pivotally movable around a pivot axis that is transverse to the main axis.
[0020] The hook can comprise one or more denticulations arranged to engage with the notch.
[0021] The indentation can be arranged for catching and axially driving the protrusion towards the end portion at transition to the first position.
[0022] The drive piece can be sized and shaped to fit in-between the hook and protrusion.
[0023] The shaft can comprise a tip distal to the end portion, and the tip can be in mechanical communication with the hook.
[0024] The tip can be in mechanical communication with the hook holder for conducting mechanical force of the elastic means to the hook.
[0025] The damper can be arranged for exerting a force opposite to the biasing force of the elastic means at transiting to the closed position.
[0026] The main body can be arranged to be fixedly attached at a first end of the first rail. In a possible embodiment, the notch can be provided on the main body, e.g., integral to the main body.
[0027] The present application further proposes a telescopic rail system for furniture drawers. The system comprises one or more brake mechanisms according to any of the embodiments disclosed in the present specification, along with the first rail and the second rail.
[0028] Brief Description of the Drawings
[0029] The figures, a brief explanation of which is herewith provided, are solely intended for providing a better understanding of the present invention and are as such not intended to define the scope of protection or the context in which said scope is to be interpreted in the absence of the description.
[0030] Fig.l is a perspective view of an exemplary embodiment of the brake mechanism according to the present disclosure, in a closed, first position.
[0031] Fig.2 is exploded view of the brake mechanism from Fig.l.
[0032] Fig.3 is another exploded view of the brake mechanism from Fig.l.
[0033] Fig.4 is a perspective view of an exemplary telescopic rail system provided with the brake mechanism embodiment from Fig.l, in a closed, first position.
[0034] Fig.5 is close-up view of detail-K from Fig.4.
[0035] Fig.6 is close-up view of detail-K from Fig.4, excluding the second rail.
[0036] Fig.7 is a perspective view of the exemplary embodiment of the brake mechanism shown in Fig.l, in an open, second position.
[0037] Fig.8 is exploded view of the brake mechanism from Fig.7.
[0038] Fig.9 is another exploded view of the brake mechanism from Fig.7.
[0039] Fig.10 is a perspective view of an exemplary telescopic rail system provided with the brake mechanism embodiment from Fig.7, in an open, second position. Fig.11 is close-up view of detail-M from Fig.10.
[0040] Fig.12 is perspective view of a second rail of an exemplary telescopic rail system provided with the brake mechanism, provided with an exemplary drive piece that can be employed in an exemplary embodiment of the brake mechanism according to the present disclosure.
[0041] Fig.13 is close-up view of the vicinity of drive piece on the second rail from Fig.12.
[0042] Fig.14 is a close-up view from the telescopic rail system from Fig.10, excluding the second rail.
[0043] Fig.15a is perspective view of a drive piece embodiment for a brake mechanism according to the present disclosure.
[0044] Fig.15b is another perspective view of a drive piece embodiment from Fig.15a.
[0045] Fig.16 is perspective view of an exemplary telescopic rail system provided with a brake mechanism according to the present disclosure, in a closed state.
[0046] Fig.17 is perspective view of the exemplary telescopic rail system from Fig.16, in an open state.
[0047] Detailed Description
[0048] With reference to the appended drawings, the present disclosure relates to a brake mechanism to be employed in a telescopic rail system for furniture drawers.
[0049] The following section exemplifies several features of possible embodiments of the brake mechanism according to the present application and possible ways of functioning thereof. Fig.l shows a perspective view of an exemplary embodiment of the brake mechanism (1) according to the present disclosure, in a closed, first position. Fig.2 is exploded view of the brake mechanism (1) from Fig.l. Fig.3 is another exploded view of the brake mechanism (1) from Fig.l.
[0050] It can be considered that a system (100) that includes the brake mechanism (1) comprises an elongate first rail (51) that extends along a main axis (A), and an elongate second rail (52) that is arranged to move along the main axis (A) relative to the first rail (51) between an open position and a closed position. The first rail (51) and second rail
[0051] (52) can be arranged for being mounted on a furniture body and a drawer, respectively. The brake mechanism (1) is arranged for decelerating the movement of the second rail (52) relative to the first rail (51) at transition from the open position to the closed position.
[0052] Fig.4 is a perspective view of an exemplary telescopic rail system (100) provided with the brake mechanism (1) embodiment from Fig.l, in a closed, first position. Fig.5 is close-up view of detail-K from Fig.4. Fig.6 is close-up view of detail-K from Fig.4, excluding the second rail.
[0053] The brake mechanism (1) comprises a main body (10) that is arranged to be fixedly attached at a first end of the first rail (51). It can be considered that the first end of the first rail (51) is axially distal to the second rail (52) when in the open position. It can be further considered that the brake mechanism (1) comprises an end portion (11) that is arranged to be aligned with the first end of the first rail (51) when attached to the first rail (51).
[0054] The brake mechanism (1) further comprises one or more hooks (12). The hook (12) is axially movable relative to the main body (10) between a first position and a second position that is distal to the end portion (11) relative to the first position. Fig.l and Fig.6 represent an example in which the hook (12) is in a first position, whereas Fig.7 and Fig.11 represent an example in which the hook (12) is in a second position. The hook (12) can be considered as arranged to oppose the second rail (52) when in use.
[0055] The brake mechanism (1) further comprises one or more protrusions (13) in fixed mechanical communication with the hook (12), e.g., integral to the hook (12). The protrusion (13) can be considered as arranged to oppose the second rail (52) when in use.
[0056] The brake mechanism (1) further comprises one or more elastic means (14) for axially biasing the hook (12) towards the end portion (11). The elastic means (14) can be considered as a potential energy accumulation device, such as a spring, e.g., tension spring. The elastic means (14) can be attached to the main body (10). The elastic means (14) can be attached to the main body (10) at one end, and in mechanical communication with the hook (12) at another end thereof. As depicted in Fig.l and 7, the brake mechanism (1) can further comprise one or more hook holders (16) for conducting mechanical force of the elastic means (14) to corresponding one or more hooks (12). The hook holder (16) can be fixedly engaged to the hook (12), and the elastic means (14) can be in mechanical communication with the hook (12) over the hook holder (14); such that the biasing force of the elastic means (14) is conducted to the hook (12) by the hook holder (14). The hook (12) and hook holder (14) can be sized and shaped such that the hook (12) is pivotally movable around a pivot axis (A2) that is transverse to the main axis (A) and parallel to a plane that is substantially defined by a surface of a corresponding first rail (51) when in use; said surface can be considered as arranged to be in mechanical contact with a corresponding furniture surface when the system (100) is mounted to the furniture.
[0057] The main body (11) comprises one or more notches (15) arranged to engage with the hook (12) when taking the second position, that is, when brought from the first position to the second position. Hence, it can be considered that the hook (12) is retained by the notch (15) at the second position, against the biasing force of the elastic means (14). For instance, the hook (12) can comprise one or more denticulations (17) arranged to engage with the notch (15).
[0058] The brake mechanism further comprises one or more drive pieces (20) arranged to be fixedly attached at the second rail (52).
[0059] The drive piece (20) comprises one or more indentations (21) for catching and axially driving the hook (12) away from the end portion (11) at transition to the open position, thereby taking the hook (12) from the first position to the second position. The one or more indentations (21) can be further considered as arranged for catching and axially driving the protrusion (13) towards the end portion (11) at transition to the closed position. The drive piece (20) can be sized and shaped to fit in-between the hook (12) and protrusion (13).
[0060] The brake mechanism (1) further comprises one or more dampers (30). The damper (30) has a damper body (31). The damper body (31) can be considered stationary with regard to the main body (10). For example, the damper body (31) can be disposed in or attached to the main body (10) such that the damper body (31) is prevented from moving relative to the main body (10) in directions parallel to the main axis (A). The damper (30) further comprises an elongate shaft (32), a portion of which extends out from the damper body along a shaft axis (Al), in a direction away from the end portion (11). The shaft axis (Al) can be considered parallel to the main axis. The portion that extends out from the damper (30) can be considered to have a variable axial length throughout transitions between the first position and second position. In other words, the shaft (32) can be considered substantially received by the damper body (31) when in the first position, and extended out from the damper body (31) away from the end portion (11) to a greater extent when in the second position. The damper (30) is arranged to produce a resistance against translational movements of the shaft (32) along the shaft axis (Al).
[0061] The shaft (32) can comprise a tip (33) distal to the damper body (31). The tip (33) is in mechanical communication with the hook (12), for instance, through the hook holder (16); such that the shaft (32) and hook (12) perform substantially identical translational movements at transitions between the first position and second position.
[0062] In a possible embodiment, the shaft (32) can be biased outwards the damper body (31), in order to make a translational movement relative to the damper body (31) along the shaft axis (Al), when in the absence of an opposing force that is greater than a force that biases the shaft (32) away from the end portion (11). In other words, the damper (30) can be arranged for exerting a force opposite to the biasing force of the elastic means (14) at transiting to the closed position.
[0063] Fig.7 is a perspective view of the exemplary embodiment of the brake mechanism (1) shown in Fig.l, in an open, second position. Fig.8 is exploded view of the brake mechanism (1) from Fig.7. Fig.9 is another exploded view of the brake mechanism (1) from Fig.7. Note that the shaft (32) is extended out from the damper body (31) to an extent that is greater when compared to that visualised in Fig.2 and Fig.3 that correspond to the first position of the hook (12).
[0064] Fig.10 is a perspective view of an exemplary telescopic rail system (100) provided with the brake mechanism (1) embodiment from Fig.7, in an open, second position. Fig.11 is close-up view of detail-M from Fig.10.
[0065] Fig.12 is perspective view of a second rail (52) of an exemplary telescopic rail system (100) provided with the brake mechanism (51), provided with an exemplary drive piece (20) that can be employed in an exemplary embodiment of the brake mechanism (1) according to the present disclosure. Fig.13 is close-up view of the vicinity of drive piece (20) on the second rail (52) from Fig.12.
[0066] Fig.14 is a close-up view from the telescopic rail system (100) from Fig.10, excluding the second rail (52), but including the drive piece (20) that is aligned with the hook (12) at an instance where the hook (12) is in the second position.
[0067] Fig.15a is perspective view of an exemplary drive piece (20) embodiment for a brake mechanism (1) according to the present disclosure. Fig.15b is another perspective view of a drive piece (20) embodiment from Fig.15a.
[0068] Fig.16 is a further perspective view of an exemplary telescopic rail system (100) provided with a brake mechanism (1) according to the present disclosure, in a closed state. Fig.17 is perspective view of the exemplary telescopic rail system (100) from Fig.16, in an open state.
[0069] With reference to the Fig.l to Fig.16, it can be considered that the brake mechanism (1) and a telescopic rail system (1) equipped with such brake mechanism (1) provide the following mode of operation:
[0070] 1- At a closed position, the hook (12) is at its first position, and the indentation (21) of the drive piece (20) can be in-between the hook (12) and protrusion (13). In other words, at the closed position, the indentation (21) is more distal to the end portion (11) then the protrusion (13), and more proximal to the end portion (11) then to the hook (12). For exemplary visualisation of the brake mechanism (1) at the first position and a telescopic rail system (100) equipped with the same at the corresponding closed position, see Fig.l, Fig.4, Fig.5, Fig.6 and Fig.16.
[0071] 2- When initiating a transition from the closed position to the open position by forcing the second rail (52) axially away from the end portion (11), e.g., through a drawer onto which the second rail (52) can be attached, the drive piece (20) pushes the hook (12), or approaches towards the hook (12) until the hook (12) is caught by the drive piece (20).
[0072] 3- By further pulling the second rail (52), the hook (12) is driven by the drive piece (20) against the biasing force of the elastic means (14), until reaching the second position where the hook (12) engages with the notch (15). The hook (12) can be considered to pivot around the pivot axis (A2) towards the notch (15), e.g., in a rotational direction away from the second rail (52) to engage the notch (15). When the engagement between the hook (12) and notch (15) is established, the drive piece (20) leaves the hook (12) to further move axially away from the end portion (11) relative to the hook (12), until the system (100) reaches the open position. Until reaching the second position, the shaft (32) moves along with the hook (12), relative to the first end (11), due to mechanical communication between the shaft (32) and hook (12).
[0073] For exemplary visualisation of the brake mechanism (1) at the second position and the telescopic rail system (100) equipped with the same at the corresponding open (that is, extended) position, see Fig.7, Fig.11, Fig.14 and Fig.17. - When initiating a transition from the open position to the closed position, e.g., by axially forcing the second rail (52) towards the end portion (11), the drive piece (20) approaches towards the end portion (11) to hit the hook (12) and / or the protrusion (13). Collision between the drive piece (20) and the hook (12) and / or the protrusion (13) results in disengagement of the hook (12) from the notch. At such instance, the hook (12) can be considered to pivot around the pivot axis (A2), in a rotational direction from the first rail (51) towards the second rail (52), thereby disengaging from the notch (15). - It can be considered that the hook (12) retains more distal to the end portion (11) when compared to the protrusion (13). Fig.11 and Fig.14 respectively visualize exemplary sizing and axial positions of the hook (12) and protrusion (13) relative to each other, and an exemplary engagement between the drive piece (20) and hook (12) that can take place simultaneous with the disengagement of the hook (12) from the notch (15). At disengagement from the notch (15), the indentation is in mechanical communication by the hook (12) or protrusion (13), or located inbetween the hook (12) and protrusion (13), thereby the biasing force exerted onto the hook (12) by the elastic means (14) is conducted to the drive piece (20) (and thus, to the second rail 52). As a result, the second rail (52) is automatically forced to the closed position, along with a drawer onto which the second rail (52) can be attached. Thus, the hook (12) arrives the first position, e.g., along with the hook holder (16). The shaft (32) moves relative to the damper body (31), along with the hook (12). Resistance of the damper (30) opposes the biasing force of the elastic means (14), thereby damping the movement speed of the second rail (52) until the conclusion of the transition from the open position to the closed position. So, at the conclusion of the transition from the open position to the closed position, the closing of a respective drawer is provided with an enhanced extent of smoothness.
[0074] Reference signs
[0075] I brake mechanism
[0076] 10 main body
[0077] II end portion
[0078] 12 hook
[0079] 13 protrusion
[0080] 14 elastic means
[0081] 15 notch
[0082] 16 hook holder
[0083] 17 denticulation
[0084] 20 drive piece
[0085] 21 indentation
[0086] 30 damper
[0087] 31 damper body
[0088] 32 shaft
[0089] 33 tip
[0090] 51 first rail
[0091] 511 first end
[0092] 52 second rail
[0093] 100 system
[0094] A main axis
[0095] Al shaft axis
[0096] A2 pivot axis
Claims
Claims1. A brake mechanism (1) arranged for decelerating a movement of an elongate first rail (51) that extends along a main axis (A) at transition, relative to an elongate second rail (52), from an open position to a closed position, wherein the brake mechanism (1) comprises- a main body (10) arranged to be fixedly attached to the first rail (51), the main body (10) comprising an end portion (11),- one or more hooks (12) axially movable relative to the main body (10) between a first position and a second position that is distal to the end portion (11) relative to the first position,- one or more protrusions (13) in fixed mechanical communication with the hook (12),- one or more elastic means (14) for axially biasing the hook (12) towards the end portion (11),- one or more notches (15) arranged to engage with the hook (12) when taking the second position,- one or more drive pieces (20) arranged to be fixedly attached at the second rail (52); the drive piece (20) is provided with one or more indentations (21) arranged for catching and axially driving the hook (12) away from the end portion (11) at transition to the open position,- one or more dampers (30) provided with a damper body (31) and an elongate shaft (32) in mechanical communication with the hook (12), such that the shaft (32) and hook (12) make substantially identical translational movements at transitions between the first position and second position.
2. The break mechanism according to claim 1, wherein the end portion (11) is arranged to be aligned with the first end (511) of the first rail (51) when attached to the first rail (51).
3. The break mechanism according to any of claims 1 or 2, wherein the hook (12) is arranged to oppose the second rail (52) when in the closed position.
4. The break mechanism according to any of claims 1 to 3, wherein the protrusion (13) is arranged to oppose the second rail when in the closed position.
5. The break mechanism according to any of claims 1 to 4, further comprises one or more hook holders (16) for conducting mechanical force of the elastic means (14) to the hook (12).
6. The break mechanism according to claim 5, wherein the hook (12) and hook holder (16) are sized and shaped such that the hook (12) is pivotally movable around a pivot axis (A2) that is transverse to the main axis (A).
7. The break mechanism according to any of claims 1 to 6, wherein the hook (12) comprises one or more denticulations (17) arranged to engage with the notch (15).
8. The break mechanism according to any of claims 1 to 7, wherein the indentation (21) is arranged for catching and axially driving the protrusion (13) towards the end portion (11) at transition to the first position.
9. The break mechanism according to any of claims 1 to 8, wherein the drive piece (20) is sized and shaped to fit in-between the hook (12) and protrusion (13).10.The break mechanism according to any of claims 1 to 9, wherein the shaft (32) comprises a tip (33) distal to the damper body (31), and the tip (33) is in mechanical communication with the hook (12).11.The break mechanism according to claim 10, wherein the tip (33) is in mechanical communication with a hook holder (16) for conducting mechanical force of the elastic means (14) to the hook (12).12.The break mechanism according to any of claims 1 to 11, wherein the damper (30) is arranged for exerting a force opposite to the biasing force of the elastic means (14) at transiting to the closed position.13.The break mechanism according to any of claims 1 to 12, wherein the main body (10) is arranged to be fixedly attached at a first end (511) of the first rail (51).The break mechanism according to any of claims 1 to 13, wherein the notch (14) is provided on the main body (10). A telescopic rail system (100) for furniture drawers, comprising the brake mechanism (1) according to any of claims 1 to 14, along with the first rail (51) and the second rail (52).
Citation Information
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