Holder for keys for bump key technology

Abstract

(Main claim) Holder (1) for keys for bump key technology, characterized in that •an elongated base body (2) with a length of approximately 20 centimeters is provided, •a receptacle (3) for a key head (4) is arranged at one end of the base body (2), •the receptacle (3) can be closed by means of two screws (6, 7) in order to firmly fix the key head (4) of a bump key (5), •the base body (2) is made of plastic or metal.

Description

Technical field

[0001] The invention relates to a holder for keys used in the bump key technique (also known as bump-key technology). In particular, the invention relates to a device for securely fixing and guiding bump keys that utilize the principle of percussion to open lock cylinders. State of the art

[0002] The bump key technique is a well-known method for opening lock cylinders, in which a specially prepared key (bumper key) is inserted into the lock cylinder and the cylinder is opened by a controlled impact. The resulting percussion briefly moves the lock's tumblers into the open position.

[0003] In conventional applications of the impact wrench technique, the impact wrench is held directly by hand and struck with a hammer or similar tool. However, this method has several disadvantages: Firstly, the force transmission during the strike is often uneven and difficult to control, since the key can only be gripped by its head. This leads to a suboptimal percussive effect and makes successfully opening the lock more difficult. Secondly, directly handling the key poses a risk of finger injuries from misfires of the hammer. The limited gripping area of ​​the key head makes secure guidance difficult. Thirdly, the achievable torque when turning the key after the strike is limited, as only the small key head is available as a lever arm. This can be particularly problematic with stiff or older locks. Fourth, the technique requires precise post-strike adjustments, in which the key must be slightly withdrawn from the cylinder to position it for the next attempt. This movement is difficult to control by hand and time-consuming. Object of the invention

[0004] The invention is based on the objective of creating a device that overcomes the aforementioned disadvantages of the prior art and enables an improved, safer and more effective application of the bump key technique.

[0005] In particular, the device should ensure secure fixation of the impact key, reduce the risk of injury to the user, allow for higher torque, and optionally provide automatic key resetting after impact. Further improvement could be achieved by incorporating a spring mechanism into the holder. Solution to the task

[0006] The problem is solved by a holder for keys for the bump key technique with the features of the main claim.

[0007] The holder according to the invention comprises an elongated base body approximately 20 centimeters long, which can be made of plastic or metal. At one end of the base body, a recess (recess) for the key head is provided, which can be closed by means of two screws. This arrangement enables secure and firm fixation of various key types.

[0008] The elongated base acts as an extended lever arm, allowing for significantly higher torque to be generated when turning the key after impact compared to direct handling. Simultaneously, the holder provides a secure grip, minimizing the risk of injury from misfires.

[0009] In a future embodiment, the holder is equipped with a spring mechanism implemented by inserting a small sealing ring. This spring mechanism causes the key to be automatically retracted a defined distance from the lock cylinder after being struck, thus optimally positioning it for the next strike. This feature is optional. Advantages of the invention

[0010] The mounting according to the invention offers several significant advantages over the prior art: Increased safety: The holder increases the distance between the user's hand and the striking point, significantly reducing the risk of injury from misfires. The secure fixation of the key also prevents it from slipping during use.

[0011] Improved torque: The approximately 20-centimeter-long base acts as an extended lever arm, enabling the generation of significantly higher torque when turning the key. This is particularly advantageous for stiff or older locks that require more force.

[0012] Precise force transmission: The secure connection between the key and the holder ensures consistent and controlled force transmission upon impact. This results in improved percussive action and increases the likelihood of successfully opening the lock. Automatic reset: The optional spring mechanism allows the key to automatically reset after impact, speeding up and simplifying the process. The user does not need to manually reposition the key, saving time and increasing precision.

[0013] Versatility: The holder can be used with different key types, as the adjustable screws and the recess for the key allow the holder to be adapted to different key head sizes.

[0014] Robust construction: The use of plastic or metal ensures high durability and resistance to the mechanical stresses encountered during impact wrench use. Examples of implementation

[0015] The invention is explained in more detail below with reference to exemplary embodiments and the accompanying drawings. First embodiment

[0016] In a first embodiment, the holder (1) consists of an elongated base body (2) with a total length of 200 millimeters. The base body (2) is made of plastic and has a rectangular cross-section with dimensions of 25 x 15 millimeters.

[0017] At one end of the base body (2) a receptacle (3) is provided for the key head (4) of the bump key (5). The receptacle (3) is designed as a recess. The key is clamped in place by two screws (6, 7) and is thus secured. The screws (6, 7) are designed as screws to allow tool-free operation; other screw types are also possible.

[0018] The recess for the key is designed to securely hold keys of various head sizes. The base body (2) has an ergonomically shaped gripping surface (8) at the end opposite the receptacle (3). This gripping surface (8) can be provided with a textured finish to ensure a secure grip even in wet conditions (optional). Second embodiment with spring mechanism

[0019] In a second embodiment, the holder (1) is additionally equipped with a spring mechanism (9). This spring mechanism (9) includes, for example, a rubber ring (9) that can be placed on the key.

[0020] The rubber ring (9) is made of an elastic material, preferably nitrile rubber or silicone rubber. Due to the elastic properties of the rubber ring (9), a spring force is generated which automatically retracts the key (5) from the lock cylinder by approximately 2 to 3 millimeters after an impact. Third embodiment made of metal

[0021] In a third embodiment, the base body (2) and holder (1) are made of metal, preferably anodized aluminum or stainless steel. This design offers even higher mechanical strength and is particularly suitable for professional use.

[0022] The metallic base body (2) can be manufactured by machining or extrusion. The receptacle (3) is formed by milling or drilling, with the screws (6, 7) engaging in threaded holes.

[0023] In the metal version, the screws (6, 7) can be designed as socket head cap screws to ensure a particularly strong connection. Alternatively, quick-release fasteners can be used, which allow for even faster operation. Application of the bracket

[0024] The mounting according to the invention is used as follows: First, the impact key (5) is inserted with its head (4) into the receptacle (3) and firmly fixed by tightening the screws (6, 7). Care must be taken to ensure that the key (5) sits straight and without tilting in the receptacle (3).

[0025] The key (5) is then inserted into the lock cylinder to be opened. The holder is held by the grip surface (9), thus ensuring a safe distance to the impact point.

[0026] The impact is delivered to the holder (1) and the other side of the handle surface (2) using a suitable tool, such as a rubber mallet or a special striking tool. The firm connection between the key (5), provided by the recess, and the holder (1) ensures optimal transfer of the impact energy to the key.

[0027] After the strike, the key (5) is turned using the handle (2), whereby the extended lever arm enables a high torque. In versions with a spring mechanism (10), the key resets automatically; otherwise, the key is pulled back slightly manually. Reference symbol list 1 bracket 2 basic shapes 3 recording 4 Key head 5 impact wrenches 6 First screw 7 Second screw 8 Grip surface 9 Spring mechanism - sealing ring

Claims

[1] (Main claim) Holder (1) for keys for bump key technology, characterized by , that •an elongated base body (2) with a length of approximately 20 centimeters is provided, •a receptacle (3) for a key head (4) is arranged at one end of the base body (2), •the receptacle (3) can be closed by means of two screws (6, 7) in order to firmly fix the key head (4) of a bump key (5), •the base body (2) is made of plastic or metal. [2] (Subclaim) Holder (1) according to claim 1, characterized by , that the base body (2) has a total length of 180 to 220 millimeters. [3] (Subclaim) Mounting device (1) according to one of the claims, characterized by , that the base body (2) has an ergonomically shaped gripping surface (8) at its end opposite the receiving (3). [4] (Subclaim) Mounting bracket (1) according to one of the claims, characterized by, that a spring mechanism (9) is provided which automatically retracts the bump key (5) from a lock cylinder after a blow. [5] (Subclaim) Holder (1) according to claim 4, characterized by , that the spring mechanism (9) includes, for example, a sealing ring (9). [6] (Subclaim) Holder (1) according to claim 5, characterized by , that the sealing ring (9) is made of an elastic material. [7] (Subclaim) Mounting bracket (1) according to one of the claims, characterized by , that the base body (2) is made of plastic, anodized aluminium or stainless steel.

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