Back-Mounted Umbrella Stand with Automatic Vertical Balance

The problem

Standard backpacks can carry closed umbrellas, but they cannot provide active protection from sun or rain while worn. Handheld umbrellas occupy one hand, limiting mobility and task performance. Some existing back-mount solutions rely on rigid attachments that tilt with the user’s torso; when the wearer bends forward to work or walk downhill, the umbrella canopy tilts too, failing to block overhead elements effectively. There is a need for a wearable structure that maintains the umbrella’s vertical alignment relative to the ground despite changes in the wearer’s body posture.

The solution

The patent describes a double-shoulder back frame equipped with a mechanical linkage system designed to automatically maintain the vertical balance of an attached umbrella.

1. An upper support rod (11) holds the umbrella handle and is hinged to the back frame via a first fulcrum shaft.
2. A lower support rod (1) connects to the user’s waist area and is hinged to the back frame via a second fulcrum shaft.
3. A corner enlargement support rod (5) acts as a central pivot hub, hinged to the back frame via a third fulcrum shaft.
4. Two connecting rods (7 and 3) link the upper and lower support rods to the corner enlargement support rod.
5. The geometric arrangement of these hinges creates a parallelogram-like linkage. When the user bends at the waist, the lower rod rotates, driving the connecting rods to rotate the upper rod in the opposite direction.
6. This counter-rotation keeps the upper support rod (and thus the umbrella) vertical relative to the ground, rather than tilted with the torso.
7. A tension spring between the upper rod and the back frame assists in resetting the position when the user returns to an upright stance.

Who it is for

• Outdoor laborers: Farmers, construction workers, or gardeners who need constant sun protection while working with both hands.
• Commuters and pedestrians: Individuals walking in rain or intense sun who want to use their phones, carry bags, or push carts without holding an umbrella.
• Tourism and event organizers: Companies looking for novelty wearables for outdoor festivals or guided tours where hands-free convenience is valued.
• Product developers: Brands exploring ergonomic outdoor accessories that solve specific posture-related utility problems.

How it works

The main parts

Operating steps

1. Setup: The user wears the back frame like a backpack. The umbrella handle is fixed to the upper support rod (11). The lower support rod (1) is secured to the user’s waist belt.
2. Standing: In an upright position, the linkage rests in its neutral configuration, keeping the umbrella shaft vertical.
3. Bending Forward: As the user bends at the waist, the lower support rod rotates backward relative to the torso.
4. Linkage Action: This rotation drives the second connecting rod (3), which moves the corner enlargement support rod (5). The movement is transferred through the first connecting rod (7) to the upper support rod (11).
5. Counter-Rotation: The upper support rod rotates forward (opposite to the torso’s tilt) by a calculated angle, maintaining the umbrella’s vertical alignment.
6. Returning Upright: When the user stands up, the tension spring pulls the upper rod back toward its initial vertical position, assisted by the reverse movement of the lower rod.

Applications

Agricultural fieldwork

Farmers tending crops often bend deeply into rows. This device allows them to keep an umbrella overhead for sun protection without stopping to reposition it or sacrificing hand use for tools.

Construction site supervision

Site managers moving around uneven terrain or crouching to inspect foundations benefit from consistent shade. The hands-free nature allows them to hold clipboards or radios while staying protected.

Outdoor tourism and guiding

Tour guides leading groups in sunny or rainy climates can gesture freely and manage equipment while the umbrella provides passive protection for themselves.

Fishing and boating

Anglers sitting or leaning on boat decks need shade from direct sunlight. A back-mounted umbrella that stays vertical even when the angler leans forward to cast or retrieve lines improves comfort.

Where it is less suitable

• High-wind environments: The large surface area of an open umbrella combined with the lever arm of the back mount may create significant torque, making it unstable or uncomfortable in strong gusts.
• Crowded urban settings: The protruding umbrella and wide back frame may be impractical in dense pedestrian traffic where space is limited.
• Heavy-duty industrial safety: This is not a certified protective equipment; it offers no impact protection and should not replace hard hats or specialized safety gear.