Gruner actuators for individual haptic feedback

Variable, natural, precise - our actuators are tailored precisely to the character of your HMI application.

Feels far superiorHaptic actuators for your HMI solutions

Active haptic feedback makes user interfaces and operating elements safer, more intuitive, more comfortable and of a higher quality - it feels better than ever. Gruner has in-depth expertise in the field of tactile feedback technology and offers customer-specific solutions and standard actuators for all types of operating systems.

We offer more: In order to make active haptics a tangible experience and to convince our customers of our solutions, we are constantly developing new demonstrators. On our YouTube channel, we introduce our demonstrators. Check it out:

YouTube

Contact us - we will be happy to present our demonstrators to you and create individual proofs of concept for you!

Different solutions for different industries and applications

AUTOMOTIVE

Tactile feedback in control elements ensures increased driving safety and comfort.

In Software-defined Vehicles (SDV) active haptics can bridge this gap between digital vehicle functions and a physical user experience.

We develop and produce the right actuator for your automotive interior application! Whether for displays, touchpads, light strips, steering wheel switches, gear selector switches, rotary knobs, overhead consoles, or smart surfaces.

OTHER APPLICATIONS

Computer Accessories & Gaming
Elevators
Home Appliances
Displays and other control elements for industrial applications (e.g. CAN keypads) and medical technology

Contact us - We will support you in selecting and integrating the right actuator for your HMI application!

Active Haptics for Software-defined Vehicles

Software-defined Vehicles (SDV) represent a fundamental shift: vehicle functions are becoming more centralized, software-based, and updateable throughout the entire vehicle lifecycle.

Displays, smart surfaces, etc. are taking over more and more functions. At the same time, selected buttons, rotary knobs, and driver-oriented control elements remain relevant wherever fast, clear, and low-distraction interaction is essential.

Active haptics can bridge this gap between digital vehicle functions and a physical user experience. The same control element can provide different haptic feedback depending on menu context, driving situation, or user profile.

Active haptics therefore enhance control elements: they become more intelligent, more flexible, and more context-aware.

Depending on the application, different actuator principles may be suitable — including HSA, voice coil, pulling solenoid, linear solenoid, and others.

The solution for extremely precise feedbackHaptic-Sense-Audio-Actuator

Our HSA (Haptic Sense Audio) actuators are three-in-one actuators, combining haptic feedback, force sensing, and audio output.

Maximum flexibility of the haptic signal: The direct drive concept enables a wide variety of signal shapes over a broad frequency range.
Extremely precise feedback: There is no latency and very short event times can be achieved (<9- 15ms).
Variable application: The actuators are available in different sizes, for single buttons to large displays.

The solution for strong performance - simply integratedVoice Coil Actuator

The flexible product design and stable performance of our voice coil actuator speaks for itself.

Adjustable resonant frequency
Configurable strands and connectors (AWG 28-24)
Low frequency tolerances over temperature
Suitable for masses up to approx. 100 grams (one actuator)
Easy assembly (tape)

The solution for major tasksPulling solenoid

Pulling solenoids can also be used as haptic actuators. These actuators can be integrated oscillating systems These actuators can be integrated into single or coupled damped oscillation systems, which enables them to deal with big masses.

Solder-free connection technology: Reliable process contacting of stranded wires and enameled wires using insulation displacement connections (IDC) or directly with the printed circuit board (press-fit).
Active damping: With targeted double impulses, it is possible to influence the damping of an entire system.
Rapid & high levels of force: Measures involving reduced eddy currents achieve the required rapid build-up of flux and force.
Dynamic properties: Here, high forces can be achieved within 1-3 ms for moving masses of > 300 grams.

The solution for big tolerance chainsLinear solenoid actuator

These types of solenoids operate in active haptic systems that are based on the physical principle of an oscillating system with single damping. Due to the linearity across a wide range of linear solenoids, tolerance problems become a relatively minor issue.

Plug & Play: Depending on the solution, it is possible to achieve direct mounting and contacting with the PCB.
Big tolerances: Tolerances of > 1 mm can be achieved without any problem by influencing the characteristic curve in a targeted manner.
Typical service life: Depending on the application and the armature mounting, 1-5 million switching cycles are possible.

Highest know-howWhy Gruner is your reliable development partner

Customized HMI solutions: We offer customized solutions for your requirements.
Agile development: Close collaboration with our expert teams to develop the ideal solution for you.
Proof of concept: Fast A-sample development and delivery.
Simulation expertise: To support development, we create a digital twin that incorporates the application (mass, spring rate, etc.) in order to be able to assess influences/changes in parameters.
Experienced expertise: Decades of experience in the development of solenoids, relays and servomotors guarantee products of the highest quality.
Global reach: Scalable production facilities in Germany, Tunisia, Serbia, and India.