Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Ball screw drive, in particular for a locking brake of a motor vehicle

A technology of transmission device and ball screw, which is applied in the direction of transmission device, brake actuator, mechanical equipment, etc., and can solve the problem that the starting position of the ball or the ball cage cannot be reached.

Inactive Publication Date: 2015-07-29
SCHAEFFLER TECH AG & CO KG
View PDF7 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of this type of ball screw drive is that, in special constructional concepts, the end of the spring facing the spindle nut can bend so that the starting position of the balls or ball cage cannot be reached

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ball screw drive, in particular for a locking brake of a motor vehicle
  • Ball screw drive, in particular for a locking brake of a motor vehicle
  • Ball screw drive, in particular for a locking brake of a motor vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] figure 1 Shown is a service brake of a motor vehicle in combination with a parking brake according to the invention, wherein the parking brake is associated with a ball screw drive 1 according to the invention. A brake disk 4 is arranged in a known manner between the two brake pads 2 of the brake caliper 3 . A brake piston 6 is arranged in the housing 5 . The brake piston 6 can be acted upon with hydraulic fluid and can be pressed along its piston axis in the direction of the brake pad 2 . When the brake piston 6 is actuated, the brake disk 4 is clamped between two brake pads.

[0026] The ball screw drive 1 according to the invention is arranged in the hollow brake piston 6 . The ball screw drive 1 has a spindle nut 8 arranged on a threaded spindle 7 . To actuate the parking brake, the threaded spindle 7 is rotated by a motor (not shown). In the event of a rotation of the threaded spindle 7 , the spindle nut 8 is displaced axially relative to the threaded spindle...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a ball screw drive (1), comprising a spindle nut (8) disposed on a threaded spindle (7) and comprising a helical ball channel (12) which is delimited by ball grooves (10, 11) of the threaded spindle (7) and of the spindle nut (8) and in which a ball row (14) formed of balls (13) is disposed. Said ball screw drive further comprises a helical spring (10) which is disposed along the helical ball channel (12), is supported relative to the spindle nut (8) and is provided for contact on the ball row (14) or on a ball cage (14) which receives the balls (13), wherein a rod (17, 21) provided for stabilising the helical spring (15) engages in the helical spring (15).

Description

technical field [0001] The invention relates to a ball screw transmission device. The ball screw drive converts the relative rotation between the threaded screw and the lead screw nut into a translational relative movement between the threaded screw and the lead screw nut. Furthermore, the invention relates to a parking brake of a motor vehicle, which is equipped with a ball screw drive of this type. In such an application, the spindle nut can, for example, be displaced axially upon rotation of the spindle nut and pressed against a brake piston, which in turn can press the brake lining against the brake disk. Background technique [0002] For example, DE 10 2009 051 123 A1 discloses a ball screw drive for an electromechanically actuated brake system of a motor vehicle. of the document Figure 4 A ball screw drive with a spindle nut arranged on a threaded spindle is shown. The spindle nut and the threaded spindle delimit with their ball grooves a ball channel which is thre...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): F16D65/18F16H25/22F16D125/40F16D121/02F16D121/24
CPCF16D2125/40F16H25/2233F16D65/18F16D2121/02F16D2121/24Y10T74/19781
Inventor 西古尔德·威尔赫姆迪特尔·阿德勒尼茨基·海因里希斯蒂芬尼·贝尔特莱因伯恩哈德·威斯内特
Owner SCHAEFFLER TECH AG & CO KG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com