Business Card Holder with Rack and Pinion Engagement Structure

The problem

Traditional business card holders often keep cards hidden inside a deep or narrow box. To retrieve a card, a user must either reach inside blindly, risking dropping others, or pick up the entire holder to inspect the contents. This disrupts workflow during meetings or networking events. Additionally, lids can be left open accidentally, exposing cards to dust or causing them to fall out if the holder is bumped. There is a need for a compact desktop organizer that presents cards clearly upon interaction and secures them automatically when not in use.

The solution

The patent describes a card holder where the lid and the inner box are mechanically linked through a gear system.

1. A bottom plate serves as the foundation. Two parallel arc-shaped racks are permanently connected to this plate.
2. A box body holds the cards. It is hinged at its front lower end to a connection cross bar on the bottom plate, allowing it to pivot.
3. Two gears are rotatably connected to the top rear side of the box body. These gears mesh with the arc-shaped racks on the base.
4. A box cover (lid) is hinged to the top rear side of the box body.
5. Crucially, the left and right ends of the box cover have rectangular protrusions. These protrusions fit into corresponding rectangular openings on the gears. This connection ensures that when the lid moves, it forces the gears to rotate.

When the user lifts the box cover, the rectangular protrusions turn the gears. Because the gears are meshed with the stationary curved racks, they cannot move linearly; instead, they roll along the curve. This rolling action pulls the rear of the box body downward relative to the front hinge, causing the entire box to tilt forward and upward. This exposes the cards. When the user releases the lid, the weight of the box body tends to return it to the horizontal position. As the box falls back, the gears rotate in the opposite direction along the racks, driving the lid back down to close over the box.

Who it is for

• Corporate Office Suppliers: Brands looking to offer functional desk accessories that differentiate from basic plastic boxes.
• Executive Gift Manufacturers: Companies producing high-end stationery sets where mechanical novelty adds perceived value.
• Hotel and Concierge Services: Venues needing durable, self-closing containers for guest information cards.
• Retail Display Designers: Stores wanting interactive display units for loyalty cards or product specs that draw customer attention.

How it works

The main parts

Operating Steps

1. Open: Lift the box cover. The protrusions turn the gears. The gears roll along the arc-shaped racks, tilting the box body forward.
2. Access: Cards are now angled toward the user for easy removal.
3. Close: Release the cover. Gravity returns the box body to the horizontal position. This rotation drives the gears backward, pulling the cover down to close the box.

Applications

Executive Desk Organization

In professional settings, quick access to contact details is essential. This holder keeps cards visible without cluttering the desk surface. The automatic closing feature maintains a tidy appearance after each use.

Hotel Front Desk Displays

Concierge desks often display room service menus or local attraction cards. This unit allows guests to flip through options easily. The self-closing lid protects the cards from damage when not being viewed.

Retail Product Information Stands

Small retail items like electronics or cosmetics often have spec sheets nearby. Placing these in a tilted, auto-closing holder draws attention while keeping the information clean and organized.

Trade Show Booths

Booth operators need to hand out business cards efficiently. This holder presents cards in an accessible way. When not actively distributing, the closed lid prevents loss or theft of remaining stock.

Where it is less suitable

• Large Volume Storage: The mechanism relies on the specific weight distribution of a standard card box. Overloading with thick brochures may hinder the gravity-assisted closing.
• High-Vibration Environments: In moving vehicles or unstable surfaces, the loose components might rattle or fail to close properly due to external forces overriding gravity.
• Minimalist Flat Designs: The arc-shaped racks and protruding gears add height and complexity, making it unsuitable for ultra-slim or flush-mounted drawer organizers.