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Plastic element with screw basement

A technology for plastic parts and screws, applied in the field of plastic parts, can solve the problems of complex installation, unsuitable screw connection, and difficulty in using screwdrivers.

Inactive Publication Date: 2007-03-21
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a device is not only complicated, but also unsuitable for screw connections, since the recess is only accessible from the lateral direction, making it more difficult to use a screwdriver on the screw head

Method used

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  • Plastic element with screw basement
  • Plastic element with screw basement
  • Plastic element with screw basement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] FIG. 1 shows a plastic part 1 with a screw base 2 integrally formed in the plastic part 1 . The plastic part 1 is used to cover the OBD socket provided in the interior space of the motor vehicle and also to cover the interface of the on-board automatic diagnosis system. The screw base 2 has a channel 4 and an outer wall 3 , wherein the channel 4 is defined by the inner wall 5 and the outer wall 3 is arranged opposite the inner wall 5 . The double arrows point out the main ejection direction 7, which comes into play when plastic parts are produced in the injection moulding process. The two overlapping mould parts defining the plastic part from the left and right (see FIG. 4 ) are separated from each other in the direction of the main ejection direction 7 after the injection moulding has been completed. The outer wall 3 is parallel to the main ejection direction 7 .

[0021] A screw, not shown, is fastened in the channel 4 in a screw direction which can extend obliquely...

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PUM

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Abstract

A plastic element, which is in particular attached in the interior of a motor vehicle, has at least one screw boss formed in one piece with the plastic element in an injection molding process. The screw boss has an outer wall and a passage with an associated inner wall, a rotationally symmetrical narrowest point for fixing a screw being formed in the inner wall. The screw can be fixed in the passage in a direction which lies at an acute angle relative to the main demolding direction of the injection molding process. To ensure that the plastic element is produced without an undercut, the outer wall of the screw boss runs parallel to the main demolding direction, and the inner wall is spaced apart from the direction of the screw and from an inner axis, which runs parallel to the main demolding direction, with a spacing which is no smaller at any point of the passage than at the narrowest point.

Description

technical field [0001] The invention relates to a plastic part, in particular for installation in the interior of a motor vehicle, which has at least one screw base integrally formed with the plastic part, the screw base having a channel delimited by the inner wall and a screw base arranged opposite the inner wall. The outer wall, in which the screw can be fixed in the channel, and the plastic part and the screw base are produced by a forming process, in particular by an injection moulding process. Background technique [0002] Today, plastic parts, such as panels, trim panels, partitions or housing parts, are used in the interior of motor vehicles, but also in various electrical and electronic devices in the consumer goods industry, for example in white or Brown household appliances or equipment used in the field of communication technology. Here, the plastic part is fixed by means of screws, clips or locking hooks, for which corresponding recesses are provided and the fix...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16B5/06B60R13/00B29C33/44
CPCB60R11/00F16B5/02B60R2011/0094B60R13/0206B60R2011/0075
Inventor 京特·甘茨
Owner SIEMENS AG