Clamp-on balcony adapter for fixing-free mounting of accessories on round and square handrails (tubes).
The clampable balcony adapter with a metal clamping structure and foam rubber insert provides a universal, damage-free solution for mounting accessories on round and square handrails, ensuring secure and weather-resistant attachment without drilling.
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- AIGNER MARKUS
- Filing Date
- 2026-01-22
- Publication Date
- 2026-05-07
AI Technical Summary
Existing fasteners for balconies often require drilling, are not universally suitable for different handrail geometries, and pose a risk of damage or scratching, especially when conventional clamping systems fail under load.
A clampable balcony adapter with a metal clamping structure and foam rubber insert that secures to handrails via screw connections, offering two versions for round and square handrails, ensuring a secure, form-fitting connection without drilling.
Enables damage-free, universal, and stable mounting of accessories on various handrails, preventing scratches and ensuring high stability and weather resistance.
Smart Images

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Abstract
Description
Technical field
[0001] The invention relates to a fastening device for balcony handrails and in particular a clampable adapter that enables the mounting of various accessories without the need for drilling or permanent modifications to the railing. State of the art
[0002] Fasteners for balconies come in a wide variety of forms. Many solutions require drilling, special brackets, or are only suitable for specific handrail geometries. Furthermore, conventional clamping systems often carry the risk of damaging or scratching the handrail, or of the device twisting under load. Technical task
[0003] The object of the invention is to provide a stable, safe and damage-free fastening device that is universally suitable for different handrail geometries and allows the mounting of accessories without drilling. Solution to the task
[0004] The problem is solved by a clampable balcony adapter consisting of a metal clamping structure that is fixed to the handrail by means of a screw connection. A piece of foam rubber is glued between the adapter and the handrail to prevent damage and reduce twisting. The invention includes two versions of the clamping structure: one for round handrails and one for square handrails. The clamping surfaces are adapted to the geometry of each handrail and ensure a secure, form-fitting connection. The adapter has a mounting surface or attachment points to which accessories such as birdhouses, lanterns, small tabletops, or decorative elements can be attached. The construction is robust, weather-resistant, and suitable for various handrail cross-sections. Advantages of the invention
[0005] The invention enables damage-free installation without drilling. The protective pad prevents scratches and increases friction. The universal design with two clamping options allows for use on round and square handrails. The construction from 4 mm thick, powder-coated metal ensures high stability and weather resistance. Installation is simple and safe, even for beginners. Example of implementation
[0006] In a preferred embodiment, the balcony adapter consists of a rectangular mounting plate connected to an underlying clamping structure via a vertical support structure. The mounting plate has several holes for attaching accessories and is made of 4 mm thick, powder-coated metal.
[0007] The clamping structure is available in two versions: • For round handrails, it includes two pipe clamp screws that press the cylindrical handrail securely against a flat counter plate. A foam rubber insert is located between the handrail and the clamping surface to prevent damage and increase friction. • For square handrails, an adapter is used that secures the square handrail with the help of two counter plates. The clamping surfaces are flat, ensuring a stable and twist-proof connection. A protective pad is also provided between the metal and the handrail.
[0008] Both versions allow for damage-free, removable, and stable mounting without drilling. The construction is weather-resistant and suitable for permanent outdoor use. Drawing description Fig. Figure 1: Perspective view of the balcony adapter for round handrails. Shown is how the adapter (1) is clamped to a round tube or handrail (2) using two pipe clamp screws (3) and a total of four nuts (7). Fig. 2: Clamping structure for round handrails in detail. Shown is the clamping of the adapter (1) to a round tube or handrail (2) by two pipe bolts (3) and four nuts (7). Fig. Figure 3: Perspective view of the balcony adapter for square handrails. Shown is how the adapter (1) is attached to a square tube or handrail (5) by means of two counter plates (4), four screws (6) and four nuts (7). Fig. 4: Clamping structure for square handrails in detail. Shown is the clamping of the adapter (1) to a square tube or handrail (5) by means of two counter plates (4), four screws (6) and four nuts (7).
Claims
[1] Clampable balcony adapter for mounting accessories on handrails without fixing, comprising a metallic clamping structure which can be fixed to the handrail by means of a screw connection, wherein a protective pad is arranged between the clamping structure and the handrail which prevents damage and reduces twisting of the adapter, and wherein the adapter has a receiving surface or fixing points for mounting accessories. [2] Adapter according to claim 1, characterized by that the protective covering is made of foam rubber. [3] Adapter according to any one of the preceding claims, characterized by , that the clamping structure can be made from different metallic materials, including powder-coated steel, stainless steel or aluminium [4] Adapter according to any one of the preceding claims, characterized by that the mounting surface has several mounting holes for the variable mounting of accessories. [5] Adapter according to any one of the preceding claims, characterized by that the clamping structure is suitable for different handrail cross-sections. [6] Adapter according to any one of the preceding claims, characterized by , that the clamping structure is designed in two versions for round and square handrails.