Patent Application
20200156294
The present invention relates to a mounting element, a mounting set, a method for mounting, and a component. The present invention relates in particular to a mounting element, a mounting set and a method for mounting a terminal element to a component housing of a component body by extrusion-coating the component body at least in part with a coating material, and to a component which is formed using the mounting element, the mounting set and/or the method for mounting.
In the industrial manufacture of components, frequently multiple component parts have to be connected to one another and then have to be jointly enclosed by an embedding coating material. For this purpose, mounting elements are used which hold two component parts together and position them relative to one another, whereby the positioning is to be maintained during the coating. In the case of many valves, for example, it is necessary to electrically contact electrical terminals of a base body of the valve using a plug and then to embed in the coating material at least a portion of the base body and its housing, as well as the electrical terminals and the contacting plug. For contacting the plug, i.e., for the pre-mounting, mounting clips are used as mounting elements for holding and positioning, which carry the plug to be contacted and are attached to the housing of the base body of the valve by a force fit and/or a form fit for pre-mounting. During the coating, the mounting clip is embedded as a lost element in the coating material.
Traditionally, existing mounting elements are unable in any event to maintain the initially selected positioning between the component parts during the coating process, whereby a relatively large degree of production variances occur.
An example mounting element according to the present invention may have the advantage over the related art that the initially selected position between component parts that are held to one another may be maintained even during a coating process, whereby a higher degree of reliability during production occurs. According to the present invention, this is achieved by an example mounting element, and in particular a retaining element or a clip, provided for mounting a terminal element at a component housing of a component body by extrusion-coating the component body at least in part with a coating material, which is designed (i) for holding and positioning a terminal element at a component housing of a component body while the component body is being coated at least in part with a coating material, and (ii) to be accommodated at least in part in the interior of a molding tool during the coating. The mounting element according to the present invention includes at least two support elements which are designed in such a way that they are supported on an inner surface of the molding tool when the mounting element is held at the component housing of the component body while the component body and the mounting element are accommodated in the interior of the molding tool.
Preferred refinements of the present invention are described herein.
Generally, all geometries which ensure the support function are possible for the design of the support elements. However, geometries are preferred which do not adversely affect the handling of the mounting element. For example, the support elements should not make it more difficult, or should not make it significantly more difficult, to attach the mounting element at the component body and in particular at the component housing. When using a clip, for example, this means that the force that has to be overcome in order to attach the clip should be increased at most very little by providing the support elements.
In the example mounting element according to the present invention, a particularly simple and suitable structure is obtained if, according to one preferred refinement, a respective support element is designed as a support knob.
A respective knob may for example be designed essentially in the shape of a cylinder, a cone or a truncated cone, a pyramid or a truncated pyramid, a prism or a truncated prism, a sphere or a portion of a sphere, an ellipsoid or a portion of an ellipsoid.
In another advantageous refinement, the number and/or the mutual geometric arrangement and/or orientation are alternatively or additionally designed relative to one another and/or relative to the geometry of an underlying body of the mounting element and/or of an underlying molding tool.
The number, the positioning and/or the orientation of the support elements may be selected in such a way that the latter are supported for example counter to the direction of flow of the coating material during the coating.
In one preferred specific embodiment of the mounting element according to the present invention, a plurality of support elements are formed in pairs at the mounting element.
As an alternative or in addition, elements of a respective pair of support elements may be attached to the mounting element essentially opposite one another—in particular diametrically opposite one another—with respect to the mounting element, in particular with respect to a center of gravity, an axis of the figure, an axis of symmetry and/or a plane of symmetry of the mounting element, in order to form a pair made up of a bearing and a counter-bearing when supported on the inner surface while accommodated in the interior of a molding tool.
In another advantageous additional or alternative refinement of the mounting element according to the present invention, this is designed in the form of a one-material piece.
In addition or as an alternative, the mounting element according to the present invention may be designed with a flexible and/or pretensioned clip area, which is configured to encompass an area of a component housing in a spring-pretensioned, form-fitting and/or force-fitting manner with bearings and counter-bearings for holding and positioning at the component housing.
In another advantageous embodiment, the mounting element according to the present invention is designed with a connecting element for accommodating and holding the terminal element, and/or with or made of a material that differs from a provided coating material for the coating to be formed.
Furthermore, the present invention also relates to a mounting set for mounting a terminal element at a component housing of a component body by extrusion-coating the component body at least in part with a coating material.
The mounting set according to the present invention includes a mounting element of the type according to the present invention and also a molding tool, it being possible for the latter to be configured in the manner of an injection mold or casting mold.
In the mounting set according to the present invention, the molding tool is configured to accommodate the mounting element, which holds and positions a terminal element, in its interior in such a way that, in the accommodated state, support elements of the mounting element are supported on an inner surface of the molding tool, in particular in the manner of bearings and counter-bearings.
In one advantageous specific embodiment of the mounting set according to the present invention, it includes a coating material in liquid or past-like form, which is different, in particular, from a material underlying the mounting element, in particular in terms of its composition.
According to another aspect of the present invention, a method for mounting a terminal element at a component body or at a component housing of a component body is also provided.
In the provided example method for mounting a terminal element, at least one mounting element according to the present invention is used and in particular the mounting set according to the present invention, the terminal element being held and positioned at a component body or at a component housing of a component body with the aid of the mounting element.
According to one refinement of the example method according to the invention, in the held state, the mounting element holding and positioning the terminal element is accommodated, together with at least a portion of the component body or of the component housing of the component body, in the interior of a molding tool and in particular of the molding tool of the mounting set in such a way that support elements are supported on an inner surface of the molding tool.
In another advantageous embodiment of the method according to the present invention, in a state in which the mounting element holding and positioning the terminal element is accommodated in the interior of the molding tool and in which support elements of the mounting element are supported on an inner surface of the molding tool, a coating material and in particular the coating material of the mounting set is filled into the molding tool and in particular is cured.
Thereafter, the molding tool is preferably then removed to expose the mounting element in order to finish the component including component body, terminal element, and mounting element.
According to another preferred refinement of the method according to the present invention, a valve, a fuel injector or a high-pressure valve or a base body of a valve, a fuel injector or a high-pressure valve is used as the component body.
In addition or as an alternative, a plug element or a flat plug made of an electrically conductive material and in particular of metal may be used as the terminal element in the method according to the present invention, and in particular, prior to a coating, the plug element as the terminal element is electrically connected to a power supply and/or control connections of the valve or base body of the valve, for example by welding or soldering.
In preferred embodiments of the method according to the present invention for mounting, a valve, a fuel injector or a high-pressure valve is thus produced.
Finally, another aspect of the present invention is to provide a component, in particular an electrical component, a valve, a high-pressure valve or a fuel injector.
The component according to the present invention has a coating, in which a mounting element according to the present invention is embedded at least in part.
In particular, the component according to the present invention is produced on the basis of a specific embodiment of the method according to the present invention for mounting.
Specific embodiments of the present invention are described in detail below with reference to the figures.
Exemplary embodiments of the present invention and the technical background will be described in detail below with reference to
The illustrated features and further properties may be isolated from one another in arbitrary form and may be arbitrarily combined with one another, without departing from the core of the present invention.
Prior to discussing the present invention in detail, a conventional mounting set 100′ and in particular a conventional mounting element 2′ in a molding tool 20 should initially be explained with reference to
In the situation shown in
Conventional mounting element 2′ according to the specific embodiment of
In order to accommodate a component that is to be pre-mounted, for example a terminal element, a plug or the like, conventional mounting element 2′ includes connecting element 7 which may also be referred to as a connecting piece and which is configured to hold the component that is to be pre-mounted.
First and second mold part 21, 22 of molding tool 20 may also be separated from one another along this plane of symmetry.
The situation shown in
It may be seen from the arrangement shown in
This traditionally results in a loss of quality during production.
This problem is avoided according to the present invention by providing relevant support elements 5 on mounting element 2 according to the present invention and in particular by arranging these on its outer circumference.
In comparison to
In contrast to the arrangement shown in
It is clearly apparent that a respective knob as a support element 5 is supported against a respective mold part 21, 22 from interior 23 on inner surface 20-1, which may also be referred to as the inner surface. When coating material 1′ is supplied in order to form a coating 1, relevant forces which are exerted on mounting element 2 as the coating material flows around mounting element 2 according to the present invention are absorbed and compensated for as a result of being supported on inner surface 20-1. This prevents the forces from changing the position and/or the orientation of mounting element 2, which is pre-mounted at a component body 11.
According to the present invention, therefore, mounting element 2 remains at the predetermined position and in the predetermined orientation during the coating process, so that terminal element 4 held by mounting element 2 also remains fixed in the preselected position and orientation.
These and other features and properties of the present invention will be further explained on the basis of the following explanations:
In the case of a fuel injector as component 10, flat plug 4 is clipped onto the connection sleeve as housing element 3 by a retaining clip as mounting element 2 during the mounting process, and then is pushed to the intended position. Thereafter, flat plug 4 is connected to contacts 13 of the magnetic coil. In this case, the electrical conductors are connected by resistance welding.
A clip 2, 2′ is required since simultaneous pre-mounting and welding cannot be carried out in one operation.
When forming coating 1 of fuel injector 10, a conventional clip 2′—as shown in
It is an object of the present invention to avoid the floating of conventional clip 2′ and the resulting displacement of current-carrying flat plugs 4 using preferably simple and inexpensive means.
Reinforcing conventional clip 2′ in order to prevent the deformation would have the result of increasing the clipping force that has to be overcome.
Another possibility would be to change the incoming flow or other adjustable parameters of the machine when forming coating 1. However, this is not possible in many cases for technical or cost reasons.
The support knobs provided as support elements 5 according to the present invention may be inexpensively produced directly during manufacture of clip 2 according to the present invention. No additional parts or work processes are necessary.
In the case described, clip 2 according to the present invention is positioned in molding tool 20 by four support knobs 5 in such a way that clip 2 and flat plug 4 connected thereto may not be displaced as the coating is being formed.
Support knobs 5 are positioned in such a way that they are supported on tool inner wall 20-1 during the coating in tool 20. The position may be selected in such a way that they are supported counter to the direction of flow of the injected mass of coating material 1′.
In the case described, four support knobs 5 are symmetrically attached at clip 2 according to the present invention and at connection element 7 to flat plug 4.
According to the present invention, more or fewer support knobs 5 may also be attached.
The shapes of the support knobs may also be suitably selected depending on the type of support and conditions.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2017 212 971.9 | Jul 2017 | DE | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2018/065310 | 6/11/2018 | WO | 00 |
