Parking brake device for a motor vehicle transmission
A technology for stoppers and transmission mechanisms, applied in the direction of transmission control, mechanical equipment, components with teeth, etc., can solve problems such as unfavorable structural space requirements
Active Publication Date: 2018-05-11
VOLKSWAGEN AG
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- Abstract
- Description
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Problems solved by technology
[0010] A disadvantage of the known parking lock device is the installation space required in the axial direction of the push rod or in the direction perpendicular to the pivoting plane of the locking pawl
Method used
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[0029] Figure 1-3 A preferred embodiment of the parking lock device 10 according to the invention is shown in three different positions. Figure 4 and 5 (partially only partially) showing Figure 1-3 The various components of the parking brake device 10.
[0030] figure 1 The parking lock device 10 is shown in a position in which the pawl 12 is in its free position, that is to say there is no tooth engagement into the locking tooth 141 of the parking lock wheel 14 in the case of. To this end, the pawl 12 pivots in the direction of the spring force of a torsion spring 18 wound around a pawl pivot axis 20 . In this free position, the locking pawl is secured by means of the wire snap bracket 22 , with which the dome region 221 adjoins the edge 122 in the end face 121 of the locking pawl 12 . Even if the torsion spring 18 breaks, the locking pawl 12 cannot thus lock into the locking engagement 141 of the parking lock wheel 14 .
[0031] Wire buckle bow frame 22 in Figure...
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The invention relates to a parking brake device for a motor vehicle transmission having a base, comprising: a parking brake wheel (14) with a locking toothing (141), a pawl (12) which is pivotable about a pawl pivot axis (20) between a free position and an engagement position and, in the engagement position, engages in the locking toothing (141) and, in the free position, is disengaged from the locking toothing (141) and is spring-prestressed in the direction of the free position, a securing element (22) by means of which the pawl (12) can be secured in the free position by an active portion (221) of the securing element (22) engaging under spring-prestress behind an edge of the pawl (12), and an actuating mechanism (26, 28), by means of which, in the secured free position of the pawl (12), the securing element (22) is transferable from its engaging-behind position, and, by advance of an actuating element (26), the pawl (12) released in this manner is pivotable into its engagement position and is lockable there. The invention is distinguished in that the securing element is designed as a wire snap-type clip (22) which is coupled to a base-mounted support element (24), is pivotableparallel to the pawl and has an apex portion (221) and, on both sides of the apex portion (221), has a clip arm (222, 224), the free arm ends (226) of which, angled in an opposed manner to each otherand offset parallel to each other, are secured on the support element (24).
Description
technical field [0001] The invention relates to a parking brake for a motor vehicle transmission with a base, comprising [0002] - Park stop wheels with stop engagement [0003] - a pawl pivotable about a pawl pivot axis between a free position and an engaged position, in which it engages in the detent engagement and in which it disengages from the detent engagement and is free spring preloaded in the direction of the position, [0004] - a fastening element, by means of which the pawl can be fixed in the free position in such a way that the active section of the fastening element abuts the edge of the pawl with spring pretension, and [0005] - the actuating mechanism, by means of which, in the fixed free position of the pawl, the fastening element can be shifted out of its rearward position, and the pawl thus unfastened can be pivoted to its position by the traction of the actuating element in the engaged position and can be locked there. Background technique [0006]...
Claims
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IPC IPC(8): F16H63/34
CPCF16H63/3416
Inventor S.亨尼希
Owner VOLKSWAGEN AG