DE102013225729A1 - Insertion element and component with an insertion element - Google Patents

Abstract

The invention relates to an insert element (10) having a bushing (11) and an outer body (12) surrounding the bushing (11), wherein the outer body (12) is adapted to a recess of a component (21), characterized in that the bushing (11) is formed of fiber-reinforced plastic, wherein the fiber in the loading direction of the bushing (11) are aligned. Moreover, the invention relates to a component with an insertion element arranged thereon.

Description

The present invention relates to an insertion element having a bushing and an outer body surrounding the bushing, according to the preamble of claim 1. Furthermore, the invention relates to a component on which such an insertion element is arranged.

It is known from the prior art to integrate plastic inserts directly into a component. From the DE 19503579 It is known to use bushes as hole reinforcements in a component.

In addition, it is also known to glue metal inserts or plastic inserts later in a component.

Plastic bushings, however, have shortcomings in creep and / or setting behavior, as well as brittleness. As soon as such sockets come under load, shrinkage effects occur, so that assemblies whose components are assembled with the aid of the jacks get game. To circumvent this problem, prior art bushings have been used in metal. However, these have the disadvantage that in particular the adhesive adhesion to the plastic component is not sufficient. In addition, corrosion effects occur.

Based on this prior art, it is the object of the present invention to provide an insertion element and a component with an insertion element, which overcomes the disadvantages of the prior art. This object is achieved by an insertion element or a component having the features of the independent claims. The dependent claims represent advantageous embodiments of the invention.

To achieve this object, the invention proposes an insert element with a bushing and an outer body surrounding the bush, wherein the outer body is adapted to a recess of a component form. Furthermore, the bush may be formed of fiber-reinforced plastic, wherein the fibers are aligned in the loading direction of the bushing. This offers the advantage that the bushing can absorb particularly high forces in their loading direction and has an improved setting behavior due to the fibers. As a result, the creep is reduced and not least reduces the brittleness of the insert. The forces are absorbed by the socket, the outer body acts as an adapter to the component. The outer body preferably encloses the bush at least in its circumferential direction and has an outer shape which is adapted to the recess in the component. The outer shape of the outer body may be preferably round, oval, triangular or polygonal, so that it can be positively inserted into the recess of the component.

Furthermore, the reinforcing fibers can be unidirectionally aligned. In this case, the socket is formed from unidirectionally oriented fibers or fiber mats, which are aligned in the longitudinal direction of the socket. Due to this orientation, the fibers can absorb particularly high forces in the axial direction of the bushing.

Furthermore, the bush may have a through opening in its axial direction, wherein the unidirectionally oriented fibers are aligned substantially parallel to the axial direction. Essentially in this context means that the unidirectionally oriented fibers can also include acute angles with the axial direction, for example in the range of ± 30 °. In this area, sufficient power is absorbed by the fibers.

The bushing may have a circular, oval, triangular or polygonal cross section, wherein the cross section of the through hole has a corresponding shape. This makes it possible to guide corresponding connecting pins or bolts through the opening, and thus to couple the insert with other components. The provision of a socket with an oval, triangular or polygonal cross-section also brings the advantage that a positive connection can be realized, which prevents spinning of the connecting pin or bolt in the socket.

In addition, the fibers may be formed as continuous fibers. Endless fibers in the context of this invention are fibers with a length greater than 50 mm.

In addition, the fibers may be formed as glass, carbon, aramid, basalt fibers or a combination of individual fibers of these materials.

Furthermore, the outer body may be formed of a thermoplastic and / or thermosetting plastic. To connect the outer body to the socket, the socket can be optionally pressed into the outer body and / or glued. Alternatively, the socket can also be overmolded with the material of the outer body, in the production of the outer body, back pressed or pressed.

By providing an adhesive film on the socket, a secure structural connection of socket and outer body can be ensured, especially when the socket is pressed back with the outer body.

In a further aspect, the invention relates to a component with a recess, in which an insertion element as described above, is introduced. Such a recess may, for example, be formed as a breakthrough or as a bore and have a triangular or polygonal, round or oval cross-sectional shape. The cross-sectional shape corresponds to the outer contour of the outer body, so that the outer body can be introduced into the recess in a form-fitting manner.

Furthermore, the insert can be positively and / or materially connected to the components.

The insert can be glued to the component and / or welded. In a further embodiment of the invention can be introduced on both sides of the component depending on an insert in the recess of the component.

In a further aspect, the invention relates to a method of making an inserter comprising the steps of: creating and providing a socket, creating an outer body, and connecting the socket to the outer body.

Furthermore, the method steps of producing an outer body and connecting the bushing to the outer body can take place at the same time, in which, for producing the outer body, the bush is overmolded with a material forming the outer body. As a result, a material and / or positive connection between the outer body and the socket can be realized in a particularly simple manner.

Alternatively, the socket may be welded or crimped to the outer body.

In the following, the advantages of the invention will be briefly summarized. By providing an insertion element according to the invention, a weight- and cost-reduced coupling element can be realized in which the setting behavior is improved by the continuous-fiber-reinforced core or the bushing. Furthermore, also joining parts with different thicknesses can be connected to each other. The insert element can advantageously be used in single or double sided accessible components. In particular, in the connection of fiber-reinforced plastics as joining parts, the insert elements according to the invention offer the advantage of similar thermal expansion coefficients. Last but not least, corrosion protection is achieved by using non-conductive materials for the outer body.

The invention is explained in more detail below with reference to the description of the figures. The claims, the figures, and the description include a variety of features that will be discussed below in conjunction with exemplary embodiments of the present invention. The person skilled in the art will also consider these features individually and in other combinations to form further embodiments that are adapted to corresponding applications of the invention.

In a schematic representation:

1 a sectional view of a component with arranged thereon insertion element,

2 a sectional view of a component with both sides arranged insertion and

3 an assembly of two joining partners with respective insertion elements.

1 shows an insert 10 with a socket 11 and an outer body 12 , The socket 11 has an axial direction a and an inner through hole 14 , In the circumferential direction is the socket 11 from the outer body 12 enclosed. The insert element 11 is partially in a recess of a component 21 brought in. About an adhesive 20 is the insertion element 10 with the component 21 bonded. The outer body 12 has a first, in 1 lower portion, which conformed to the recess in the component 21 is trained. In addition, the outer body exhibits 12 a second, in 1 upper section on, as in the circumferential direction of the socket 11 circumferential collar is formed and on a surface of the component 21 rests. The connection between the socket 11 and the outer body 12 becomes during the manufacturing process of the insert 10 generated by, for example, the socket 11 with the material of the outer body 12 is overmoulded. Alternatively, the socket 11 in the prefabricated outer body 12 pressed and possibly additionally glued to this. The socket 11 can, for example, be cut out of a pultrusion profile. The socket 11 is made of fiber-reinforced plastic with unidirectionally oriented fibers, for example. Glass or carbon, which is substantially parallel to the longitudinal direction or axial direction a of the jack 11 are aligned.

The outer body 12 is also made of plastic and may optionally be reinforced with fibers. Particularly suitable for this purpose are short-fiber or long-fiber reinforcements made of glass or carbon, which are arranged in a thermoplastic or duroplastic matrix.

The insert element 10 may alternatively to the bonding, as in 1 shown, also with the component 21 be welded. This is particularly useful when the component 21 is formed of thermoplastic material and at least the outer body 12 also comprises a matrix of thermoplastic material. Alternatively, a connection between the insert element 10 and the component 21 take place if only one of the connection partners is made of thermoplastic material, since thermoplastics may also have sufficient adhesion to other materials. The welded joint is produced by melting the surface of one or both joining partners, joining the inserting element 10 with the component 21 and subsequent cooling. The heat input necessary for the melting can be generated, for example, by means of radiators, contact heating elements, lasers or by rubbing the two joining partners together.

The socket 11 can absorb very high forces in the axial direction a. This is particularly advantageous for example. Screw connections with high biasing force to ensure the function of the screw. In the in 1 As shown embodiment, the socket acts 11 as a force application point and is one-sided with the component 21 together.

2 shows an alternative embodiment in which in a component 21 on both sides depending on an insert 10 . 10 ' is introduced. The insert elements 10 are structurally identical to the insert element 10 already related to the 1 was explained.

3 shows a component assembly consisting of two components to be joined 21 . 22 is trained. Each joining part 21 . 22 has a recess, in each of which an insertion element 10 . 10 ' is arranged. The axial axes a of the through holes 14 the insertion elements 10 . 10 ' are parallel, possibly even aligned coaxially, so that, for example, a screw through both insertion elements can be realized. This creates a detachable connection between the joining partners 21 . 22 created.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19503579 [0002]

Claims (15)

Insertion element ( 10 ) with a socket ( 11 ) and a socket ( 11 ) surrounding outer body ( 12 ), wherein the outer body ( 12 ) to a recess of a component ( 21 ) is shaped, characterized in that the bushing ( 11 ) is formed of fiber-reinforced plastic, wherein the fiber in the loading direction of the bushing ( 11 ) are aligned. Insertion element ( 10 ) according to claim 1, characterized in that the reinforcing fibers are unidirectionally aligned. Insertion element ( 10 ) according to claim 1, characterized in that the bushing ( 11 ) in its axial direction (a) a passage opening ( 14 ) and that the unidirectionally oriented fiber are aligned substantially parallel to the axial direction (a). Insertion element ( 10 ) according to one of the preceding claims, characterized in that the bushing ( 11 ) has a circular, oval, triangular or polygonal inner and / or outer Querschitt. Insertion element ( 10 ) according to one of the preceding claims, characterized in that the fibers are formed as continuous fibers. Insertion element ( 10 ) according to one of the preceding claims, characterized in that the fiber is formed as a glass, carbon, aramid, basalt fiber or a combination thereof. Insertion element ( 10 ) according to one of the preceding claims, characterized in that the outer body ( 12 ) the socket ( 11 ) surrounds in the radial direction. Insertion element ( 10 ) according to one of the preceding claims, characterized in that the outer body ( 12 ) is formed of thermoplastic and / or thermosetting plastic. Component ( 21 ) with a recess in the one insertion element ( 11 ) is introduced according to one of the preceding claims. Component ( 21 ) according to claim 9, characterized in that the insertion element ( 11 ) with the component ( 21 ) is positively and / or materially connected. Component ( 21 ) one of the preceding claims, characterized in that the inserting element ( 11 ) with the component ( 21 ) is glued and / or welded. Component ( 21 ) according to one of the preceding claims, characterized in that in the recess of the component ( 21 ) on both sides of the component ( 21 ) one insert element each ( 11 ) is introduced. Method for producing an inserting element ( 10 ) according to one of the claims 1 to 10 comprising the steps of: - generating and providing a socket ( 11 ), - generating an outer body ( 12 ) and - connecting the socket ( 11 ) with the outer body ( 12 ). Method according to claim 13, characterized in that the method steps generate an outer body ( 12 ) and connecting the socket ( 11 ) with the outer body ( 12 ) at the same time, in which for producing the outer body ( 12 ) the socket ( 10 ) is overmolded with a material forming the outer body, Method according to claim 13, characterized in that the bushing ( 11 ) with the outer body ( 12 ) is welded or pressed.

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