Functional modern office furniture systems and contract furniture packages need technical solutions that permit independent designs in terms of form while reliably performing their function. Lock systems, in particular, have to meet high standards as regards design, security, function and feel. The Minden-based furniture lock specialist introduced the sliding door lock 515 back in 2006. Rapid installation and a small number of parts have been features of the system since 2009. In the third generation now marketed to coincide with interzum 2013, the sliding door lock is enhanced by an anti-levering device.
In the endeavour to make a good product even better, close cooperation with renowned office furniture manufacturers can provide fresh stimuli. In the case of the sliding door lock 515 the joint process resulted in a new anti-levering device which as well as its security function also gives scope for customisation by manufacturers. The anti-levering device is located on a cup which is set into the second sliding door, allowing the furniture manufacturer to determine the tolerance ranges according to the door thickness and the material. From a manufacturing point of view the additional recess for the cup is easy to incorporate into the production process. What’s more, the new anti-levering device can be used with other systems. For example, it also works reliably in conjunction with the Dial Lock combination lock in the sliding door cabinet version. With this further development of the sliding door lock 515 Lehmann is picking up on the sliding door trend and offering a lock solution which is not only secure but also meets contemporary design requirements.
The sliding door lock, which uses a turning and closing movement instead of the conventional push cylinder function, resolutely follows the principle of rapid assembly with a small number of parts. The lock has been reduced to a single component which is inserted into the pre-drilled stepped hole dia. 40/18 or 40/16.5 mm from the back of the door during the assembly process. No tools are needed. A minimum cylinder projection on the door front prevents damage in transit and blends in unobtrusively with the design. The flat structure on the back of the door enables the gap between doors to be reduced. The sliding door lock can be used with both the Prestige and the VCS 18.2 interchangeable cylinder system.
Lock and design are not mutually exclusive
By combining the sliding door lock 515 with the S65 system, three sliding doors can be locked with only one lock. That reduces the number of lock components on the front and avoids interfering with the lines of the cabinet – a visible advantage in design-oriented furniture systems.
A steel bar runs along the back of the sliding doors. Nearly as long as the door is wide and the same depth as the door thickness, it is carried on brackets with a film hinge allowing the steel bar to move. The sliding door lock can thus be fitted in a hole provided at any position on the steel bar, without using tools, according to the design of the particular piece of furniture. During the locking process the steel bar is either raised or lowered, forcing the steel bar through the lock.
The Lehmann system sliding door lock 515 and S65 is used by renowned office furniture manufacturers in their ranges, as it allows lots of design scope both for furniture systems and for stand-alone solutions. The more extensive the sliding door system, the fewer visible lock cylinders there are per additional meter of storage space. With four sliding doors, for instance, only one additional lock is needed – that’s two locks in total – and with five sliding doors, two steel bars and two locks are used.
Seven years after the launch of the first generation, Lehmann’s sliding door lock system is still evolving with well thought-out variations enabling the product to cover as many requirements as possible, bearing in mind that the user convenience of a piece of office furniture and its adaptability to the modern workspace environment are increasingly important. And that’s just where the little details often make a big difference.
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