Vehicle Door Safety Lock with Axial Displacement Handle
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Solution Overview
Problem
Existing safety locks for vehicle doors and flaps lack effective security against unauthorized operation and cause damage to frame parts due to vibrations and corrosion from grinding movements of the locking tongue.
Innovation Solution
A safety lock design featuring a lock housing with a rotating clamping sleeve that axially displaces the locking tongue and actuating handle, secured by a cylinder lock and spring mechanism, preventing unauthorized operation and minimizing frame damage through a T-handle design and dual function rotary clamping sleeve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the locking tongue is made to rest tightly on the frame part to ensure secure closure during driving shocks and vibrations, then the reliability of the closure is improved, but the frame part is damaged due to grinding movement of the locking tongue
Solution Approach 1:
The locking shaft is designed to perform two movements: rotation and axial displacement. During closure, the locking tongue first rotates into position, then the locking shaft axially displaces to press the locking tongue firmly against the frame part. This dynamic two-stage movement ensures reliable contact while preventing damaging grinding motions, as the tongue is properly positioned before applying clamping force.
Solution Approach 2:
The invention adds an axial displacement dimension to the traditional rotational movement of the locking shaft. By moving the locking shaft along its axis in addition to rotating it, the system achieves both secure engagement (through rotation) and firm contact (through axial displacement), while eliminating the damaging grinding effect that occurs with pure rotational movement against the frame.
2Ease of operation
If the actuating handle is made freely accessible for easy operation, then the ease of operation is improved, but the security against unauthorized operation deteriorates
Solution Approach 1:
The actuating handle is segmented into two functional parts: a visible outer handle portion that provides ease of operation, and a locking mechanism (locking element) that provides security. The outer handle remains freely accessible for normal operation, while the locking element controls access to the internal mechanism, preventing unauthorized operation while maintaining user convenience.
Solution Approach 2:
The locking element acts as an intermediary between the outer handle and the internal locking mechanism. It allows authorized operation by transmitting the handle's movement to the mechanism while blocking unauthorized access. This intermediary component enables the system to simultaneously achieve ease of operation (through the accessible handle) and security (through the locking element control).
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances security by locking the actuating handle and prevents damage to frame parts by ensuring the locking tongue rests securely without grinding, thus providing both safety and functionality.
Implementation Method 1
a spring mechanism, preventing unauthorized operation
Data Source
Figure 1
Figure 2~3
AI summary
The invention relates to a safety closure for doors or hatches disposed on a vehicle, particularly a motor home or camping trailer, comprising a closure housing (11) attached to a part that is fixed to the vehicle. A locking shaft (22) carrying a locking tongue (28) on the free end thereof is disposed in said housing in a rotatable fashion by means of an operating handle (15) between a closed position and an open position for the door or hatch. The locking shaft (22) is part of a three-phase voltage closure, wherein the locking shaft (22) is displaced by an axial distance in the rotational movement thereof between an open position and a closed position, and wherein the operating handle (15), which is lockable via a cylinder lock (19) is disposed in a movable fashion relative to the locking shaft (22) and is disposed to be axially displaceable between a locked position established in a form fit with a housing part (25) attached to the exterior of the door or hatch and an operating position protruding from the housing part (35).