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Tightly overmoulded component and method for producing such a component

A sealing and encapsulating technology, applied in the field of components, can solve problems such as insufficient sealing

Inactive Publication Date: 2014-12-10
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technique has also proven insufficient to seal

Method used

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  • Tightly overmoulded component and method for producing such a component
  • Tightly overmoulded component and method for producing such a component
  • Tightly overmoulded component and method for producing such a component

Examples

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Embodiment Construction

[0027] figure 1 and 2 is a sectional view of a component 1 according to the invention according to a first embodiment. figure 1 shows component 1 before application of encapsulation 5, figure 2 The component 1 is shown after application of the encapsulation 5 . Depend on figure 1 It can clearly be seen that a closed annular space 4 is formed by a groove 23 in the two-part base part 2 comprising a first part 21 and a second part 22 . On this groove 23 is placed a seal 3 which seals the space 4 from the environment. The seal 3 thus ensures that no melt can reach the space 4 during the encapsulation. figure 2 The component 1 is shown after the encapsulation 5 has been applied. It can be seen that the seal 3 is elastically deformed by the encapsulation 5 . Since the seal enters the space 4 here, the gas located therein is compressed. In this way the seal 3 is further tightened so that a robust seal is formed between the base part 2 and the envelope part 5 . However, the...

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PUM

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Abstract

The present invention relates to a component comprising a base part (2), a sealing element (3) and an overmoulding (5), which extends at least partly around the base part (2) and at least partly around the sealing element (3), wherein the encapsulation (5) keeps the sealing element (3) in an elastically deformed state.

Description

technical field [0001] The invention relates to a component which is encapsulated with another material. Furthermore, the invention relates to a method for producing an encapsulation component and a fuel injection system for an internal combustion engine, which comprise an encapsulation according to the invention. Background technique [0002] Metal base parts are known from the prior art, in particular, which are encapsulated in plastic. However, due to the different expansion coefficients of the base part and the encapsulation, insufficient fixation of the encapsulation on the base part often results. Micro gaps are thus created into which liquid or gaseous media transported by capillary action can enter. This leak can thus lead to undesired corrosion phenomena. Furthermore, attempts to improve the seal between the base part and the encapsulation are known from the prior art. For this purpose it is possible to use, for example, a hermetic labyrinth, in which one or mor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M55/00F16L3/10F16L21/00F02M63/00
CPCF02M2200/80F16L13/10F02M2200/8046F02M55/005F02M55/004Y10T428/24562Y10T428/24628Y10T428/24752F02M61/168F16L3/1058F16L21/005
Inventor R·克罗默
Owner ROBERT BOSCH GMBH