linear drive

Abstract

The utility model relates to a linear driver, specifically is for the spring force auxiliary linear driver that the closed element especially door or trunk lid of vehicle is moved relative to the vehicle body of motor vehicle, and the spring force auxiliary linear driver at least has: first drive part for coupling with the vehicle body or the closed element, second drive part can slide relative to the first drive part for coupling with another part of vehicle body or closed element, and spring element that force assists the relative movement of these drive parts each other is tensioned between the two drive parts, and the spring element has the elastic outer layer of the form of flocked, is provided with at least one guide sleeve formed by thermoplastic material for guiding the spring element, and is coated with the sliding emulsion on the flocking and is coated with synthetic grease optionally. According to the utility model, the effect of further improved friction reduction and noise reduction is provided for the spring force auxiliary linear driver.

Claims

1. A linear actuator, specifically a spring-force-assisted linear actuator (100) for moving a closing element of a motor vehicle, particularly a door or trunk lid, relative to the body of the vehicle, said linear actuator having at least: A first drive component (110) is used to connect with the vehicle body or the enclosure element. A second drive component (120) capable of sliding relative to the first drive component (110), the second drive component being used to engage with another component of the vehicle body or enclosure element, and A spring element (130) tensioned between the two drive components provides force assistance for the relative movement between the drive components (110, 120), the spring element having a flocked elastic outer layer. Its features are, At least one guide sleeve (111) formed of thermoplastic material is provided for guiding the spring element (130), and a sliding emulsion is coated on the flocking.

2. Linear drive according to claim 1, characterized in that The flocking has polyamide and / or polyester fibers.

3. Linear drive according to claim 2, characterized in that The flocking is applied to the spring element (130) in an electrostatic or electrostatic pneumatic process.

4. The linear drive of claim 1, wherein, The emulsion is water-based and contains no polytetrafluoroethylene or silicone.

5. The linear drive of claim 1, wherein, The thermoplastic material of the guide sleeve (111) is configured to be formed of polyoxymethylene, polyamide, polypropylene or polyethylene.

6. The linear driver according to claim 4, characterized in that, In a spraying or dipping process, the sliding emulsion is applied in liquid form to the flocked spring element (130).

7. Linear drive according to claim 6, characterized in that The sliding emulsion is then dried.

8. The linear drive of claim 7, wherein, The flocked spring element (130) has a synthetic grease coated on it after the sliding emulsion is coated and dried.

9. The linear driver according to claim 8, characterized in that, The synthetic grease contains polytetrafluoroethylene.

10. The linear drive of claim 1, wherein, The flocked material is also coated with synthetic grease.

11. Linear drive according to any of claims 1 to 5, characterized in that The thermoplastic material of the guide sleeve (111) is reinforced with glass fiber.

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