Weatherproof cap for knob / electronic cylinder half cylinder
The electronic locking cylinder is protected by a reinforced plastic mechanical protection with a cone-stumped protective cap, preventing water and debris from penetrating and ensuring the cylinder's functionality and longevity in extreme weather conditions.
Patent Information
- Application Number
- DE202025100261
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2025-03-13
- Estimated Expiration
- 2035-01-31
AI Technical Summary
Electronic locking cylinders with knobs are not adequately protected against water, snow, dirt, foreign bodies, and wind, leading to potential short circuits and malfunction due to water penetration, especially in extreme weather conditions.
A reinforced plastic mechanical protection is applied over the electronics cylinder, featuring a cone-stumped protective cap with gaps for water drainage and rubber-like stripes for grip and damping, preventing water, snow, and dirt from penetrating from the front or side while allowing water to flow out from behind.
The solution effectively prevents damage from water, snow, dirt, and wind, extends the lifespan of the electronic cylinder, and maintains its functionality and usability, including RFID key operation and turning the knob, while also providing protection against cold, heat, and mechanical bumps.
Smart Images

Figure 00000000_0001_ABST 
Figure 00000000_0000_ABST
Abstract
Description
[0001] Electronic locking cylinders with knobs are not fully protected against the ingress of water, snow, dirt, foreign objects, or wind. This means that, in practice, water penetration into the electronic cylinder will render it inoperable due to a short circuit. Water penetration is exacerbated by strong winds and extreme weather conditions.
[0002] This problem is solved by the features listed in claim 1.
[0003] The invention ensures that the additional, precisely fitting mechanical protection made of reinforced plastic, which is pushed over the electronic cylinder from the front, prevents water, snow, dirt, foreign objects, or wind from penetrating the cylinder from the front or the side. This also prevents water damage from the front or the side. This increases the service life of the electronic cylinder and, above all, maintains the opening and locking function. Should water penetrate from the rear, it can drain away through the drainage holes at the rear. The function of the electronic cylinder and the RFID key, as well as the operability and turning of the knob when locking and unlocking, are fully retained with the mechanical protection. In addition, the electronic cylinder is further protected against cold, heat, and impacts by the gap and the air cushion.
[0004] The truncated cone protective cap A is designed to create a gap C between the electronics cylinder B and the protective cap at the front and side. Any condensation or water penetrating from the rear can drain diagonally to the rear and through openings G at the end of the protective cap. The protective cap has internal ribs E covered with rubber-like strips F. These, in addition to the precisely fitting protective rings at the front and rear of the protective cap, provide additional grip when turning the electronics knob and cushion the effects of mechanical shocks. The rear protective ring of the protective cap also features a water drip tab D and openings G to allow water to drain away. The rear protective ring is also widened again, see drawing. List of reference symbols A truncated cone shape B Electronic cylinder C Space, air cushion to electronic cylinder D Drip spout water to the rear E Internal bars for stability and gap thickness F Rubber-like material applied to webs G Water drainage openings
Claims
[1] Weather protection cap for knob / electronic cylinder half cylinder characterized by , by truncated cone shape, by raised bars inside, by space between the protective cap and the electronic cylinder on the side and to the front, by additional widened ring at the back with drainage openings for water, by water drip nose at the back of the protective ring. [2] Weather protection cap for knob / electronic cylinder half cylinder according to claim 1, characterized by that there is a gap of a few millimeters (C) between the electronic cylinder and the protective cap. [3] Weather protection cap for knob / electronic cylinder half cylinder according to claim 1, characterized by , that webs a few millimeters(E) inside for the stability of the protective cap and for the space between. [4] Weather protection cap for knob / electronic cylinder half-cylinder according to claim 1, that the shape (A) is truncated cone. [5] Weather protection cap for knob / electronic cylinder half-cylinder according to claim 1, characterized in that a water drip nose (D) on the back is in the form of a raised ring of the protective cap. [6] Weather protection cap for knob / electronic cylinder half cylinder according to claim 1, characterized by that drainage holes (G) for water are on the back of the protective cap. [7] Weather protection cap for knob / electronic cylinder half cylinder according to claim 1, characterized by , the rubber-like material (F) on the webs contributes to the adhesion of the protective cap to the electronic cylinder. [8] Weather protection cap for knob / electronic cylinder half cylinder according to claim 1, characterized by that the full functionality of the electronic cylinders is maintained through a precisely fitting shape. [9] Weather protection cap for knob / electronic cylinder half-cylinder according to claim 1, the protective cap is made of plastic. [10] Weather protection cap for knob / electronic cylinder half cylinder according to claim 1, characterized by that the weather protection cap can be put on and taken off the electronic cylinder without tools. [11] Weather protection cap for knob / electronic cylinder half cylinder according to claim 1, characterized by that the rear protective ring is widened again and offers additional protection.