Elastic Dog Harness with Stretching Limiting Element
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Solution Overview
Problem
Existing dog harnesses fail to effectively dampen the adverse effects of micro-tuggings and sudden pullings when leading a dog on a leash, leading to discomfort and potential health issues for both the dog and the person holding the leash, due to their rigid design and lack of adequate elastic elements that are not properly protected from environmental factors.
Innovation Solution
The elastic dog harness features a symmetrical moving frame with multiple through openings, a channel portion for the elastic element, and a stretching limiting element to control the maximum stretching of the elastic element, ensuring it is protected and durable, with a design that allows for adjustable length and distribution of forces to reduce peak loads on the dog's joints and the handler's hands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an elastic element is incorporated into the chest strap to dampen micro-tuggings, then the comfort and joint protection for the dog and handler is improved, but the elastic element is exposed to environmental factors and mechanical stress that reduces its service life
Solution Approach 1:
The elastic element is nested within a channel portion formed by the chest strap parts, which protects it from environmental factors while allowing it to function. The channel portion acts as a protective enclosure that keeps the elastic element shielded yet operational.
Solution Approach 2:
The stretching limiting element is positioned beforehand to prevent over-stretching of the elastic element. This limiting structure acts as a pre-established protective measure that stops the elastic element from exceeding its safe deformation range, thereby extending its service life.
2Adaptability or versatility
If the elastic element is allowed to stretch freely to follow every dog movement, then the adaptability and comfort is improved, but the peak forces during sudden pullings increase adversely
Solution Approach 1:
The stretching limiting element changes the parameter of maximum stretch distance, constraining the elastic element to a controlled range. This prevents excessive stretching during sudden pullings while still allowing sufficient movement for comfort and adaptability during normal walking.
3Loss of energy
If the elastic element is made longer to increase damping effect, then the energy absorption capability is improved, but the elastic element becomes more vulnerable to environmental factors and mechanical damage
Solution Approach 1:
The elastic element is nested within the channel portion which provides protective enclosure. This allows the elastic element to be sufficiently long for energy absorption while being shielded from UV radiation, friction, and other environmental factors that would otherwise degrade it.
4Strength
If a rigid chest strap design is used to maintain structural stability, then the strength and durability is improved, but the ability to dampen micro-tuggings and reduce peak forces is lost
Solution Approach 1:
The chest strap assembly combines rigid components (chest strap parts, moving frame, limiting element) with a flexible elastic element. The rigid parts provide structural stability and strength, while the elastic element provides damping capability, creating a composite structure that achieves both objectives simultaneously.
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 harness significantly reduces the adverse effects of tuggings on the dog's joints and the handler's hands, providing long-term comfort and safety by limiting elastic element deformation and extending its service life through proper force distribution and protection from environmental factors.
Implementation Method 1
The elastic element has a length and strength designed as a function of the size of the forces expected to act on the chest strap, in order to ensure the long-term usability of the elastic element and to reduce the adverse effects of the periodic micro-tuggings and sudden pullings
Implementation Method 2
forming a loose loop in a bulging part in the direction of the chest strap part crossing the chest bone as a stretching limiting element, limiting the extent of stretching of the elastic element holding the moving frame tightly
Data Source
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AI summary
The patent relates to an elastic dog harness (1) comprising a back strap (17), a leash ring located on the axis line (22) fixed on the section thereof crossing the axis line (21) for attaching a leash, a chest strap (2) surrounding the neck and chest of the dog, threaded through a moving frame (3) on both sides of the axis line (21), equipped with an elastic element (23), and a belly strap (16) equipped with a buckle portion (19). The moving frame (3) is divided, having at least one limiting element opening (3.c) and a smaller opening for a chest strap part crossing the chest bone (14), separated by a dividing element (3.b). A chest strap part holding a moving frame (5) is threaded through the moving frame (3), the limiting element opening (3.c) thereof, forming a loose loop in a bulging part in the direction of the chest strap part crossing the chest bone (14) as a stretching limiting element (8), limiting the extent of stretching of the elastic element (23) holding the moving frame (3) tightly, as a result of which the service life of the primarily stretching portion (26) of sized length, extending in the direction of the back strap (17), located in a channel portion (12) covered by the chest strap part holding a moving frame (5), is increased.