Speargun Handle Segmented Trigger Mechanism
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Solution Overview
Problem
Current spearguns face issues such as inappropriate size for specific fishing conditions, weak trigger mechanisms, increased recoil due to friction and water retention, corrosion, and limited usability for left-handed divers, leading to inefficiency and premature wear.
Innovation Solution
A speargun handle design with a low anatomical profile, reinforced trigger guard, longitudinal hole for hydroplane and water drainage, deflectors to prevent tangling, a shock absorber for handling larger game, adjustable weight, ambidextrous features, and a compact reverse trigger mechanism with a visible screwing point for line holder adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a large-sized speargun is used for blue water hunting, then the weapon can hit large fish, but the weapon hinders the diver's movements and poses a risk of damage in narrow passages
Solution Approach 1:
The speargun is divided into modular components including a detachable handle assembly with trigger mechanism, allowing the weapon to be configured in different sizes and handled more easily in narrow spaces while maintaining firing capability
2Ease of operation
If a small-sized speargun is used for cloudy water hunting, then the weapon is easy to handle, but the weapon cannot hit large fish
Solution Approach 1:
The speargun allows dynamic configuration where the handle and trigger mechanism can be detached and reattached to different barrel sizes, enabling the diver to switch between compact configurations for mobility and larger configurations for hunting bigger fish
3Reliability
If the trigger mechanism is enclosed in a cartridge cover, then the mechanism is protected, but the overall size of the trigger mechanism increases
Solution Approach 1:
The trigger lever is extracted from the enclosed cartridge cover and positioned externally, while the retaining hook remains protected within the trigger chamber. This reduces the overall handle size while maintaining protection of critical components
4Device complexity
If the retaining hook and trigger lever are inside a cover, then the mechanism is compact, but the assembly time increases and strength is reduced
Solution Approach 1:
The trigger mechanism is segmented into separate components (retaining hook, trigger lever, spring) that can be independently assembled and disassembled, reducing assembly time while maintaining a compact configuration when assembled
5Device complexity
If friction is present in the shaft movement, then the shaft speed is reduced, but the weapon structure becomes simpler
Solution Approach 1:
A hydraulic damping system is introduced into the trigger mechanism that uses water pressure to control the shaft release speed, eliminating the need for complex mechanical friction-based speed control while achieving precise shaft velocity regulation
6Reliability
If water cannot enter the weapon barrel, then the original portion is protected, but recoil is increased
Solution Approach 1:
A flexible membrane is introduced at the barrel opening that allows water to enter the barrel during firing to reduce recoil, while maintaining protection of internal components through the membrane's selective permeability and flexible sealing properties
7Device complexity
If the line holder is fixedly mounted, then the mechanism is simple, but the adaptability for different configurations is reduced
Solution Approach 1:
The line holder is designed with adjustable mounting positions along the handle, allowing it to be moved and fixed at different locations to accommodate various shooting configurations and user preferences, while maintaining a simple clamp-based mounting mechanism
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 design enhances agility, reduces recoil, improves shot accuracy, prevents corrosion, and allows for easier handling by left-handed divers, while increasing the speargun's strength and reducing assembly time and parts complexity.
Implementation Method 1
longitudinal hole for hydroplane and water drainage
Implementation Method 2
longitudinal hole for hydroplane and water drainage
Implementation Method 3
shock absorber for handling larger game
Data Source
Figure 1
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AI summary
The invention relates to a speargun handle (1) having a reinforced trigger guard (5) which creates a chamber (6) in which there is a trigger lever (7). The handle (1) has a retaining member (10) with chambers (12) surrounded by a non-slip retaining cover (11). It also has a loading aid (17), a front end (23) for fitting a tube (2), incorporated deflectors (25) for lines and a line holder (32). The handle (1) further comprises a reverse trigger mechanism, wherein the trigger lever (7) is located outside the cartridge (26). The retaining hook (27) may alternatively have a notch for a pivot pin (38) which receives the developing stresses derived from the shaft's (4) launching.