Padlock housing for accommodating Euro profile double cylinders

Abstract

Padlock, comprehensive: a) a lock housing (1) with a receptacle (2) for a Euro profile double cylinder (3), b) a locking device (5) passing through the lock housing (1), and c) a locking mechanism (4) arranged in the lock housing (1) which transmits a rotary movement of a locking lug (6) of the Euro profile double cylinder (3) to the locking device (5) in order to lock or unlock it, characterized in that the mechanism (4) is designed to interact with the locking lug (6) over an axial range of more than 10 mm in order to compensate for the variable axial positions of the locking lug (6) of Euro profile double cylinders (3) of different overall lengths.

Description

2. Technical field

[0001] The invention relates to a padlock housing designed to accommodate and cooperate in operation with a Euro profile double cylinder, in particular a cylinder according to the standards DIN 18252 or DIN EN 1303. 3. State of the art

[0002] Padlocks with interchangeable cylinders are widely used in modern technology. However, these are predominantly designed for use with Euro profile half cylinders (according to DIN 18252, size 30 / 10) or proprietary cylinder formats such as KiK (Key-in-Knob) or SFIC (Small Format Interchangeable Core). With Euro profile half cylinders, the position of the locking cam is precisely defined by the fixed inner length of 10 mm, which simplifies the design of the bolt mechanism in the padlock.

[0003] Euro profile double cylinders, on the other hand, have variable lengths on both sides (e.g., 30 / 30 mm, 35 / 70 mm, 45 / 55 mm). As a result, the axial position of the locking cam, which actuates the bolt mechanism, is not fixed but depends on the specific cylinder length. A standardized and commercially available padlock solution that can accommodate and functionally utilize this variability of Euro profile double cylinders is not known. Existing approaches require manual modifications to the padlock body or the use of special cylinders, which contradicts the goal of flexible and universal applicability. Background and Problem Statement

[0004] According to DIN 18252 (or EN 1303), a maximum projection of ±3 mm beyond the protective fitting is permitted for Europrofile double cylinders. This standard-specified cylinder projection represents a compromise between ease of installation and security requirements.

[0005] In contrast, insurance-related recommendations, for example from VdS or various insurance companies, emphasize the need for a smaller protrusion height, often 2.5 mm, or even flush mounting. These recommendations aim to significantly increase mechanical attack resistance and thus improve security. Although these stricter requirements are not legally binding standards, they are strongly recommended from a security perspective. The aforementioned guidelines primarily refer to the installation of locking cylinders in door locks with protective fittings and do not directly apply to padlocks. Nevertheless, it is crucial to consider these security-oriented recommendations when designing the lock housing for this solution, especially in the context of a padlock. 4. Object of the invention

[0006] The object of the present invention is to create a padlock or padlock housing that overcomes the disadvantages of the prior art. In particular, it should enable the use of commercially available Euro profile double cylinders with different length combinations without requiring any modifications to the cylinder or the lock housing by the user. The padlock housing should be able to interact with the variably positioned locking cam of the respective Euro profile double cylinder to actuate a bolt mechanism. 5. Solution and optional embodiment

[0007] This problem is solved by a padlock housing with the features of claim 1. Advantageous embodiments are the subject of dependent claims.

[0008] The invention proposes a padlock housing that has a receptacle for a Euro profile double cylinder. The housing is designed such that the inserted Euro profile double cylinder interacts with an internal locking mechanism. Actuation of the locking cam of the Euro profile double cylinder results in the locking or unlocking of a detent, for example, a locking bolt or locking pin.

[0009] The invention relates to a device for compensating for the variable axial position of the locking cam in Euro profile double cylinders of different lengths. The solution consists of designing the mechanism inside the lock housing—in particular components such as the follower, coupling, or actuator—so that it can interact with the cylinder's locking cam over an extended or modified axial range. This ensures reliable operation of the lock regardless of the specific length of the Euro profile double cylinder (e.g., 30 / 30, 40 / 50, 35 / 55). To achieve this, the internal actuating components are, for example, axially displaceable, extended, or otherwise modified. Specific implementations could include an elongated follower, a transmission rod, or a specially adapted actuator.

[0010] In a preferred embodiment, the lock housing is dimensioned to fully accommodate the entire Euro profile double cylinder. This eliminates any cylinder protrusion and thus maximizes protection against mechanical attacks. A particularly advantageous optional embodiment of this solution provides for a diagonal or angled arrangement of the cylinder within the housing. This innovative arrangement utilizes the longer diagonal of the housing to create a greater usable length for accommodating the cylinder. This enables the integration of standard Euro profile double cylinders, which would otherwise not fit completely into a compact lock housing due to their length. The angled arrangement represents a flexible and space-saving solution that improves compatibility with a wide variety of cylinder types while simultaneously ensuring the desired high level of security.This design is optional and can be implemented depending on specific requirements and design preferences. 6. Advantages of the invention • Enhanced compatibility: ◯ Use of locking systems that are only available in the Euro profile double cylinder design (e.g. certain electronic or mechatronic cylinders). ◯ Compatibility with older or rare locking systems that were not produced as Euro profile half cylinders. ◯ Use of blindly coded or one-sided defective cylinders (e.g., drilled, damaged or modified Euro profile double cylinders). • Increased security due to longer cylinders: • Some Euro profile double cylinders, especially those with longer lengths (e.g., 35 mm or more on one side), feature more locking elements (e.g., 7-pin systems), thus increasing tamper resistance. Euro profile half cylinders, due to their reduced length (often only 30 mm / 10 mm), often do not offer this enhanced security or the increased number of locking elements. • Reversible installation: o With double-sided coded Euro profile double cylinders, in case of a defect on one side, the functional other side can be used, which is not possible with Euro profile half cylinders. • Sustainability and cost savings: ◯ Possibility of reusing removed Euro profile double cylinders from other applications (e.g. front doors, apartment doors). ◯ Euro profile double cylinders are sometimes cheaper than Euro profile half cylinders, so additional savings are possible. ◯ Upcycling: Euro profile double cylinders that were previously unused or considered unusable are given a new function by being used in padlocks. • Flexibility in the locking system: ◯ Integration of the padlock into existing locking systems without additional acquisition costs for special cylinders or Euro profile half cylinders.

Claims

[1] Padlock, comprising: a) a lock housing (1) with a receptacle (2) for a Euro profile double cylinder (3), b) a locking device (5) passing through the lock housing (1), and c) a locking mechanism (4) arranged in the lock housing (1) which transmits a rotary movement of a locking lug (6) of the Euro profile double cylinder (3) to the locking device (5) in order to lock or unlock it, characterized by , that the mechanism (4) is designed to interact with the locking lug (6) over an axial range of more than 10 mm to compensate for the variable axial positions of the locking lug (6) of Euro profile double cylinders (3) of different overall lengths. [2] Padlock according to claim 1, characterized by , that the longitudinal axis of the receptacle (2) for the Euro profile double cylinder (3) can run parallel to the front of the lock housing (12). [3] Padlock according to claim 1 or 2, characterized by, that the locking mechanism (4) comprises several or one component selected from the group consisting of, for example: a) an axially displaceable, length-adjustable or otherwise modified driver, b) a modified transmission rod (7), c) a modified clutch (8), d) a modified actuator (9) which, for example, interacts with the closing lug (6) via an axial area. [4] Padlock according to any one of the preceding claims, characterized by that the locking mechanism (5) is designed as, for example, a locking bar (10) or a locking bolt (11). [5] Padlock according to any one of the preceding claims, characterized by , that the receptacle (2) and the locking mechanism (4) are designed for use with mechanical, mechatronic or electronic Euro profile double cylinders (3).