Lottery Ticket Machine Anti-Theft Locking Mechanism

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional lottery ticket machines experience elastic fatigue over time, leading to a loss of effectiveness in preventing tickets from being illegally drawn out, especially under great external forces.

Innovation Solution

A lottery ticket machine design featuring a press roller with a shaft and a control device composed of a rotary gear, bushing, control wheel, spring, bushing cover, fastener, and outer cover, where the control wheel engages with the outer cover to lock the press rollers when an external force is applied, preventing rotation and thus preventing ticket removal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a control plate with elastic member is used to prevent tickets from being drawn out, then the ticket security is improved, but the control plate produces elastic fatigue over time and loses effectiveness

Engineering Contradiction:

Improveticket securityVSAvoidservice life of elastic member

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The patent replaces the elastic member-based mechanical system with a gear-based mechanical system. The control wheel with engage teeth meshes with the rotary gear, creating a positive engagement mechanism that eliminates elastic fatigue. When external force is applied, the control wheel rotates and disengages from the rotary gear, causing the press rollers to lock tightly onto the ticket through the engage teeth of the outer cover.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a dynamic locking mechanism where the control wheel can rotate freely during normal operation but automatically locks when external force is applied. The spring provides continuous rotational force to the control wheel, and when the control wheel rotates due to ticket pulling force, it disengages from the rotary gear, triggering the locking action through the engage teeth.

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If the press rollers are made to rotate freely for ticket dispensing, then the ease of operation is improved, but the tickets can be illegally drawn out

Engineering Contradiction:

Improveticket dispensingVSAvoidticket theft

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent creates a dynamic system that switches between two states: during normal operation, the control wheel rotates freely with the press rollers to dispense tickets; when external force is applied, the control wheel rotates and disengages from the rotary gear, causing the press rollers to lock tightly onto the ticket through the engage teeth of the outer cover, preventing theft.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent converts the harmful external force (ticket pulling) into a beneficial locking action. When someone attempts to illegally draw out tickets, the external force causes the control wheel to rotate and disengage from the rotary gear, which triggers the engage teeth of the outer cover to lock the press rollers onto the ticket, transforming the theft attempt into an automatic security response.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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

The machine effectively prevents lottery tickets from being stolen by ensuring the press rollers remain locked when an attempt is made to forcibly draw out tickets, maintaining security over the machine's lifespan.

Implementation Method 1

a spring, having one end pushing against the inner wall of the bushing cover

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

the control wheel has its outer side annularly provided with lots of engage teeth... the outer cover is provided inside with lots of engage teeth to be correspondingly engaged with the engage teeth of the control wheel

Methodology Applied

Scientific EffectMechanical interlocking: Mechanical Fastener

Implementation Method 3

the press rollers cannot be rotated at all, and hence the lottery tickets are tightly pressed by the press rollers and impossible to be drawn out

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentUS7922038B2Lottery ticket machine having function of preventing tickets from being illegally drawn out

Publication Date: 2011.04.12 CHENG YUN LAN

AI summary

A lottery ticket machine having function of preventing tickets from being illegally drawn out includes a machine base provided thereon with a driving device, two press rollers and a control device. One of the two press rollers is disposed with a shaft extending out of the machine base for assembling the control device, which consists of a rotary gear with engage holes, a bushing and a control wheel bored with a bushing hole to be fitted on the bushing and provided with engage teeth and projecting bars to be respectively engaged with the engage holes of the rotary gear. An outer cover covered on the control device is disposed inside with engage teeth to be correspondingly engaged with the engage teeth of the control wheel, and a spring has its opposite ends respectively pushing against the control wheel and the inner wall of a bushing cover.