Extendable and Retractable Mechanism for Connecting Plug, and Child Safety Seat An Adjustable Latch for a Better Car Fit

This patent covers an adjustable connector that lets a child safety seat extend and lock its anchoring plugs to fit different vehicles securely. It comes from Wonderland Switzerland AG, part of the Wonderland group behind the Nuna brand of child car seats and nursery products.

The Problem

A child seat is only as safe as its connection to the car. Most modern seats attach to standard anchor points using rigid connectors, the system widely known as ISOFIX or LATCH. Because cars differ in the depth and position of those anchor points, a connector that cannot adjust may leave the seat too loose or too far forward, which can compromise safety and make installation fiddly. Parents need a connector that slides out to reach the anchors, locks firmly at the chosen length, and releases easily when the seat is moved, all while being simple enough to use correctly without special tools.

What This Invention Does

The patent provides an extendable and retractable mechanism for the connecting plug of a child safety seat. A plug connecting rack slides back and forth on the seat base and carries a row of adjusting recesses spaced along its length. A locking pin drops into any one of those recesses to hold the plug at the chosen extension, so the connector can be set to match how deep the car’s anchor points sit. The end of the locking pin has a rearward-facing slope, which lets the rack ratchet outward smoothly while still locking firmly once positioned. The result is a connector that adjusts to different vehicles, holds securely in place, and can be released and retracted when needed. The filing covers both the mechanism and the child safety seat that uses it.

Key Features

• Adjustable length. A sliding rack with multiple recesses lets the connecting plug extend to match different vehicles.
• Positive locking. A locking pin engages a chosen recess to hold the plug firmly at the set length.
• Sloped pin tip. The rearward-facing slope lets the plug extend smoothly while still locking in place.
• Secure fit. The mechanism is designed to keep the seat tightly anchored to the car.
• Seat integration. The filing protects both the mechanism and the child safety seat built around it.

Who Is Behind It

The applicant is Wonderland Switzerland AG, part of the Wonderland group, a major designer and manufacturer of nursery products and child car seats that owns premium brands including Nuna. The group is known for engineering and safety work on child restraints and has received numerous international design awards. The named inventors are Daliang Zhang and Xiaolong Mo. This filing is a divisional application from an earlier related Australian application.

Why It Matters

Correct installation is one of the biggest factors in how well a child seat protects a child, and connectors that adjust to fit a specific car make a secure fit easier to achieve. A mechanism that extends, locks positively, and retracts cleanly helps parents install seats properly across different vehicles. Protecting the design in Australia supports the company’s products and commercial activity in the local market for child restraints.

Related Concepts

• Child safety seat – the product the mechanism is built into.
• ISOFIX – the international standard for anchoring child seats that the connector works with.
• LATCH (child safety) – the equivalent anchor system used in North America.
• Seat belt – the broader vehicle restraint context for child seats.
• Automotive safety – the wider field of protecting occupants in vehicles.

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AU 2026201959 was published in the Australian Official Journal of Patents on 2 April 2026 and is open for public inspection. Patent applications represent inventions that are sought to be protected and do not necessarily reflect commercially available products.