Patent CN217566713U
Updated November 1, 2026Automotive Foot Massage Device with Adjustable Cover Plate
Adding massage features to car seats often requires bulky components that interfere with legroom or seat adjustment tracks. This design solves the spatial constraint by making the overall height adjustable. A driving mechanism moves the cover plate relative to the bearing substrate, allowing the unit to compress into a smaller profile when not in use or expand slightly to accommodate different shoe sizes or foot positions. The structure uses specific mating forms like annular chutes or elastic cables to keep the moving parts stable while minimizing the footprint inside the vehicle's existing seat framework.
- China utility model - active
- No filings outside China
- Automotive interior component
- Adjustable height mechanism
Splat! What let you down?
🚗
Space-efficient design
The cover plate adjusts its distance from the base to fit under car seats.
⚙️
Drive mechanisms
Uses ball screws, sliding fits, or elastic cables to move the cover plate.
💆
Vibration massage
The patent describes a vibration motor on the carrier substrate to massage the foot.
🛡️
Stable structure
Limiting cylinders and guide columns prevent wobbling during movement.
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- 2 Product brief · now How it works, uses and options written up
- 3 Prototype First samples for buyers to review
- 4 Pilot run Small first batch for launch customers
- 5 Volume production Repeat orders at scale
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The problem
Installing massage units in standard automobile seats is challenging due to strict space constraints. Traditional rigid assemblies often require significant vertical clearance between the seat cushion and the floor or adjacent structures, which many vehicle platforms do not provide. Additionally, fixed-height devices cannot easily accommodate different user preferences or footwear thicknesses without protruding uncomfortably. There is a need for a compact, adjustable solution that integrates seamlessly into the existing seat framework while providing effective foot massage functionality.
The solution
The patent presents a foot massage device divided into two main sections: a bearing substrate (11) and a cover plate (12). These parts are connected by a driving mechanism (13) that allows the cover plate to move either closer to or further away from the substrate. This adjustability enables the device to fit within the varying gaps available in vehicle interiors. The structure includes specific mating designs, such as up-down sliding fits or rotational connections, to maintain alignment while changing height. Vibration motors are mounted on the substrate to deliver the massage effect directly to the feet resting on the cover plate.
Who it is for
- Automotive Tier-1 Suppliers: Integrating comfort features into premium sedan and SUV seat modules without redesigning the entire frame.
- Interior Accessory Brands: Creating aftermarket add-ons for older vehicles where original seats lack massage capabilities.
- Commercial Fleet Operators: Adding a comfort feature to long-haul cabs where drivers spend many hours seated.
- Seat Manufacturers: Developing new product lines that offer variable-height massage units for different market segments.
How it works
The main parts
| No. | Part | What it does |
|---|---|---|
| 11 | Bearing Substrate | Base structure housing the motor and mounting points. |
| 12 | Cover Plate | Surface contacting the foot; moves relative to the base. |
| 13 | Driving Mechanism | Motor-driven system (e.g., ball screw) to adjust height. |
| 40, 42, 43 | Limiting Cylinder & Chute | Guides the cover plate vertically and prevents lateral shift. |
| 60, 61, 63 | Elastic Cable System | Alternative drive using retractable bodies and guide columns. |
| 65 | Airbag Group | Optional support layer to assist height adjustment. |
| 117, 119 | Support Cylinders | Hydraulic or electric actuators for tilting or lifting angles. |
Operating steps
- Mounting: The bearing substrate is fixed to the vehicle seat structure.
- Adjustment: The driving mechanism activates, moving the cover plate up or down.
- Massage: When the cover plate is positioned correctly, the vibration motor operates to massage the foot.
- Retraction: After use, the cover plate can be lowered closer to the substrate to minimize space usage.
Applications
Premium Passenger Cars
High-end sedans and SUVs often have complex seat rails. This device’s adjustable height allows it to fit in narrow gaps between the seat cushion and floor pan, offering luxury comfort without compromising legroom.
Electric Vehicles (EVs)
EV battery packs sometimes reduce cabin floor height. This compact massager adapts to reduced vertical space, ensuring comfort features remain viable in newer EV platforms.
Commercial Trucks
Drivers spend hours seated. According to the patent, the vibration massage component is arranged on the carrier substrate to massage the foot during use. The structure is described for repeated adjustment in a vehicle cabin.
Aftermarket Upgrades
Owners of older cars can retrofit this unit into existing seats. The modular design simplifies installation compared to replacing the whole seat assembly.
Where it is less suitable
- Very Low Profile Seats: If the gap between seat and floor is extremely minimal, even the compressed unit may not fit.
- Heavy Industrial Machinery: Designed for automotive cabins rather than high-vibration off-road equipment.
- Open-Air Convertibles: Exposure to weather elements may require additional sealing not detailed in the patent.
Frequently asked questions
How does the height adjustment work?
The device uses a driving mechanism to move the cover plate relative to the bearing substrate. Depending on the chosen design variant, this can be achieved via a ball screw system, an elastic cable pull, or an airbag lift. This allows the unit to change its total thickness to fit into tight spaces under the seat.
Can it fit any car seat?
It is designed for standard passenger vehicle seats with sufficient clearance between the cushion and the floor or seat frame. Specific mounting brackets and dimensions must be adapted to each vehicle platform during the design phase.
Is the massage function strong?
The patent specifies a vibration motor arranged on the carrier substrate. The intensity depends on the motor selected during manufacturing. The structure provides the positioning, while the motor provides the massage action described in the patent.
Does it consume much power?
The device includes a driving motor for adjustment and a vibration motor for massage. Power consumption varies by motor size and duty cycle. Automotive-grade low-power motors are typically used to avoid draining the vehicle battery excessively.
What happens if something breaks?
The modular design separates the drive mechanism from the massage surface. Common wear items like cables or motors can be replaced. The structural integrity relies on the interlocking of the substrate and cover plate guides.
Can I install this myself?
Professional installation is recommended because it involves modifying or accessing the internal structure of the car seat. Incorrect installation could interfere with seat safety features like airbags or heating elements.
Can this design be made and sold in the US?
The patent is currently in force in China only. There is no US patent corresponding to this specific filing. However, you should conduct a freedom-to-operate search for US patents related to adjustable automotive seat components before mass production.
Are you affiliated with the patent owner?
No. IP2M is an independent design and manufacturing service working from the public patent document.
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Helpful details to include:
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- Target vehicle models or seat types
- Available space (height clearance under seat)
- Desired drive mechanism (ball screw, cable, etc.)
- Estimated quantity and target price
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This page is based on the public patent document CN217566713U, assigned to Anwen Automobile Technology Tianjin Co ltd. IP2M is an independent manufacturing service and is not affiliated with, endorsed by or licensed by the patent owner. Images marked as concept renderings are illustrations, not photos of an existing product. Patent status information is provided for reference only and is not legal advice; confirm freedom to operate for your market before production. Full disclaimer.