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Wrap-around braking device for planetary gear trains and planetary gear train having a wrap-around braking device

A technology of planetary gears and braking devices, applied in drum brakes, gear shifting mechanisms, brake types, etc., can solve problems such as labor-intensive manufacturing, and achieve the effects of simplifying structure, reducing manufacturing costs, and cheap manufacturing

Inactive Publication Date: 2013-06-12
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the disadvantage in WO 02 / 093034 A2 is that the threaded spindle must not only have a right-handed thread but also a left-handed thread and is thus very complex to produce

Method used

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  • Wrap-around braking device for planetary gear trains and planetary gear train having a wrap-around braking device
  • Wrap-around braking device for planetary gear trains and planetary gear train having a wrap-around braking device
  • Wrap-around braking device for planetary gear trains and planetary gear train having a wrap-around braking device

Examples

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Embodiment Construction

[0029] exist Figures 1 to 6 A preferred first embodiment of a wind-up brake device 1 for a planetary gear 16 or a wind-up brake 1 with a planetary gear 16 is shown in . Features which are not considered essential to the invention in the following description are to be understood as optional. The following description therefore also relates to further exemplary embodiments of the wrap-around brake device 1 which have partial combinations of the features to be explained below.

[0030] The wrap-around brake device 1 is preferably designed as a band brake device. The wrap-around brake device 1 acts on a planetary transmission 16 , which is preferably designed as a power shift transmission. Particularly preferably, it is a 2-gear planetary transmission, which is preferably used in hybrid and pure electric drives of motor vehicles.

[0031] The planetary gear transmission 16 has at least one ring gear 17, the ring gear 17 is provided with an internal tooth structure in its inne...

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Abstract

The invention relates to a wrap-around braking device (1) for a planetary gear train, comprising at least one wrap-around element (2), which has at least one first and one second cam device (3a, 3b) and which is designed to wrap around at least one ring gear (17) of the planetary gear train for braking engagement, and at least one shift fork (4), which can be moved in the axial direction of the shift fork and which has at least one first actuating element (5a) and one second actuating element (5b) opposite the first actuating element in the axial direction and which is mounted in a rotationally fixed manner in a housing (8) that has at least one first stop (9a) and one second stop (9b) opposite the first stop in the axial direction, wherein for braking engagement on the ring gear, which rotates in a first rotational direction, the shift fork (4); can be moved in a first axial direction in such a way that the first actuating element interacts with the first cam device, while the second stop opposite the first actuating element in the axial direction interacts with the second cam device.

Description

technical field [0001] The invention relates to a winding brake device for a planetary gear transmission, especially for a double-speed planetary gear transmission, and a planetary gear transmission with a winding brake device, especially a double-speed planetary gear transmission. Background technique [0002] A wind-up or band brake for braking a brake drum is known from WO 02 / 093034 A2. Band brakes have a floating-mounted spindle with a right-handed thread and a left-handed thread. The brake band wrapped around the brake drum is fixed not only to the right-hand thread but also to the left-hand thread by means of two nuts. Through the rotation of the lead screw by means of the electric motor, the two nuts are moved towards each other, so that the brake band comes into contact with the brake drum and brakes the brake drum, or the brake band and the brake drum interact with each other. away, thereby opening the brake band and releasing the brake drum. [0003] Housing-sid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D49/00F16D49/08F16D65/14
CPCF16D49/00F16D49/08F16D65/14F16D2121/24F16D2125/40F16D2127/08
Inventor W·鲁德M·施奈德
Owner SCHAEFFLER TECH AG & CO KG
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