阅读说明：本技术 线材连接元件 (Wire connecting element ) 是由 A·维格尔 于 2019-11-27 设计创作，主要内容包括：本发明涉及一种线材连接元件(1),其用于经由所述线材连接元件(1)的连接部分(V)将金属线材(2)与电路板或导电基材连接,其中线材连接元件(l)具有由预组装部分(B)和与其相邻的最终组装部分(C)组成的双区部分(Z),其中所述预组装部分(B)设计成用于固定线材线圈(10),其中所述最终组装部分(C)形成用于所述线材丝线圈(10)的接触区域,在所述线材线圈(10)围绕所述预组装部分(B)固定之后,所述线材线圈按预期移动到所述最终组装部分(C)上,优选地挤压所述最终组装部分。(The invention relates to a wire connecting element (1) for connecting a metal wire (2) to a circuit board or an electrically conductive substrate via a connecting portion (V) of the wire connecting element (1), wherein the wire connecting element (l) has a double-zone portion (Z) consisting of a pre-assembly portion (B) and a final assembly portion (C) adjacent thereto, wherein the pre-assembly portion (B) is designed for fixing a wire coil (10), wherein the final assembly portion (C) forms a contact region for the wire coil (10), the wire coil being moved onto the final assembly portion (C) as intended after the wire coil (10) is fixed around the pre-assembly portion (B), preferably pressed.)

1. Wire connecting element (1) for connecting a metal wire (2) with a circuit board or an electrically conductive substrate via a connecting portion (V) of the wire connecting element (1), wherein the wire connecting element (l) has a double-zone portion (Z) consisting of a pre-assembly portion (B) and a final assembly portion (C) adjacent to the pre-assembly portion, wherein the pre-assembly portion (B) is designed for fixing a wire coil (10), wherein the final assembly portion (C) forms a contact region for the wire coil (10), the wire coil being moved onto the final assembly portion (C) as intended after the wire coil (10) is fixed around the pre-assembly portion (B), preferably pressed against the final assembly portion.

2. Wire connecting element (1) according to claim 1, characterised in that the wire connecting element (1) has a substantially cylindrical elongated shape in the region of the double zone portion (Z).

3. Wire connection element (1) according to claim 1 or 2, characterised in that the wire connection element (1) has, in the region of the final assembly zone (C), preferably square, with a plurality of sidesA cross-section of the rim (K) and having an outer circumference A which is substantially constant in a longitudinal direction L as seen in a circumferential direction around a central axis of the wire connecting element_c。

4. Wire connecting element (1) according to one of the preceding claims, characterized in that the wire connecting element (1) has a preferably square, rounded-edged cross section or has a circular cross section in the region of the preassembly zone (B) and has an outer circumference A which is substantially constant in the longitudinal direction L, viewed in the circumferential direction around the central axis of the wire connecting element_B。

5. Wire connecting element (1) according to claim 1, characterised in that the preassembly zone (B) has an outer circumference a_BLess than the outer circumference A of the final assembly area (C)_CAnd preferably continuously increases by a circumferential slope (R) during the transition to said final assembly zone (C).

6. Wire connection element (1) according to one of the preceding claims, characterized in that the wire connection element (1) has a wire coil (10) which surrounds the final assembly region (C), which is pushed onto the final assembly region (C) after the r windings (W1, W2, ·, Wr) have been produced around the preassembly region (B), wherein preferably the edge (K) enters at least partially into the wire (2) of the wire coil (10).

7. Wire connection element (1) according to one of the preceding claims, characterised in that the connection portion (V) of the wire connection element (1) forms a circuit board connection, preferably consisting of two legs (L1, L2) which are also preferably connected at a leg tip on the plug side or at least in the state of contact with the circuit board contact each other at a leg tip on the plug side.

8. A wire connection method for producing a wire and a wire connection element (1) according to any one of the preceding claims, comprising the steps of:

a. producing a wire winding (10) of r windings (W1, W2.., Wr) around the preassembly zone (B) with a wire (2), whereby the wire (2) of the wire winding (10) is arranged preferably on the entire winding portion after being wound on the outer surface of the preassembly zone (B), and

b. moving the wire coil (10) produced in this way from the preassembly zone (B) onto the final assembly zone (C),

c. wherein r is a purely real or natural number greater than 2, and the maximum value is chosen such that the wire coil (10) viewed in the longitudinal direction of the wire connecting element (1) is at most as long as the final assembly zone (C) viewed in said direction.

Technical Field

The invention relates to a wire connecting element according to claim 1. The invention relates in particular to a wire connection element for connecting a metal wire (2) to a circuit board or an electrically conductive substrate, for which purpose the wire connection element is designed to be inserted directly into a hole or a substantially circular contact region in the circuit board in order to produce a circuit board plug-in connection.

Background

Known contacts for connection to a circuit board, such as press-fit contacts, require expensive, precisely dimensioned tools. Press-fit contacts are known from a number of publications, for example EP 0451674 or DE 3623453. One of the main disadvantages of this solution is that, as mentioned above, the tools used for production are very expensive and at the same time not flexible in size, which in turn requires complex development to achieve the optimum final dimensions of the press-fit contacts.

A press-fit contact and a method for producing a press-fit contact are known from WO 2005122337 a 1. Known press-fit contacts comprise a contact body and two legs formed integrally therewith by non-cutting machining, by which contact a metal wire cannot be directly connected without the aid of known connecting processes such as soldering, welding, etc.

DE 20218295U 1 and DE 102013103818 A1 disclose further press-fit contact elements, but in which the wires cannot be permanently and firmly connected without the aid of an additional welding filler by means of a conventional material-bonding connection process.

The connection by press fit replaces at least partly for example a material bonding process, such as a welded connection. Generally, a press-fit connection can be produced by the formation of both force-fitting and form-fitting parts. At least minimal deformation may occur in the press-fit contacts and/or associated contact receptacles, which may help increase retention and enlarge the contact surface. Unfortunately, however, the prior art also fails to provide a satisfactory solution to replace material bonding methods such as solder connections on the connection side of the contacts.

Disclosure of Invention

On this background, it is an object of the present invention to provide a wire connection element, in particular a direct connection element for connecting a metal wire to a circuit board or an electrically conductive substrate, for which purpose the connection element is also designed to be inserted directly into a hole or a contact area of the circuit board or to have a contact area for connection to the substrate. Another object of the invention is to propose a method for producing such a connection with a wire connection element.

However, the core of the invention relates to the region of such a wire connection element, which is designed for contacting and permanently electrically connecting with a (conductive) wire. The basic idea of the invention is a special geometrical configuration of such wire connection regions.

To this end, the invention provides a wire connecting element for connecting a metal wire with a circuit board or an electrically conductive substrate via a connecting portion of the wire connecting element, wherein the wire connecting element has a two-zone portion consisting of a pre-assembly portion (B) and a final assembly portion (C) adjacent thereto, wherein the pre-assembly portion is designed for fixing a wire coil, wherein the final assembly portion forms a contact region of the wire coil, whereby after the wire coil is fixed around the pre-assembly portion, the wire coil is moved as intended onto the final assembly portion, preferably pressed against the final assembly portion, in order to form a contact connection on the final assembly portion.

It is particularly advantageous if the wire connecting element has a substantially cylindrical and elongated shape in the region of the double-zone portion. In the simplest case, the wire connection element may be an elongated contact pin.

In a particularly advantageous embodiment of the invention, it is provided that the connecting element in the region of the final assembly zone preferably has a square cross section with a plurality of edges and an outer circumference a which is substantially constant in the longitudinal direction L when viewed in the circumferential direction around the central axis of the wire connecting element_c。

Thus, it is advantageous according to the invention that the connecting element is now advantageous in the region of the preassembly zoneOptionally having a cross-section, preferably square, with rounded edges or having a circular cross-section, and having an outer circumference A which is substantially constant in the longitudinal direction L, viewed in the circumferential direction around the central axis of the wire connecting element_B。

In a further advantageous embodiment of the invention, it is provided that the outer circumference a of the preassembly region_BLess than the outer circumference A of the final assembly area_CAnd preferably continuously increases by a circumferential slope (R) during the transition to said final assembly zone.

It is also advantageous for the wire connecting element to have a wire coil which surrounds the final assembly region and is pushed onto the final assembly region after the r windings (arranged side by side) have been produced around the preassembly region, wherein preferably the edge at least partially penetrates into the wire of the wire coil.

It is also advantageous if the connecting section of the wire connecting element forms a circuit board connection, preferably consisting of two legs which are preferably also connected at the leg ends on the plug side or at least in the state of contact with the circuit board contact each other at the leg ends on the plug side.

Another aspect of the invention relates to a wire connection method for producing a wire and a wire connection element according to any one of the preceding claims, comprising the steps of:

a. producing a wire winding of r windings around the preassembly zone with the wire, whereby the wire of the wire winding is preferably arranged on the entire winding portion after being wound on the outer surface of the preassembly zone, and

b. moving the wire coil produced in this way from the preassembly zone (B) onto the final assembly zone, and

c. wherein r is a purely real or natural number greater than 2, and the maximum value is chosen such that the wire coil viewed in the longitudinal direction of the wire connecting element is at most as long as the final assembly zone viewed in said direction.

Drawings

Further features and advantages of the invention emerge from the following description of a preferred embodiment with reference to the drawings. In the drawings:

fig. 1 is a first view of a wire connecting element according to the present invention;

FIG. 2 is a view of a wire connecting element according to the invention, in which a wire winding is formed around a preassembly zone, an

Fig. 3 is a view of the wire connection element according to fig. 2, wherein the wire coil is implemented, i.e. pushed into the final assembly area of contact,

fig. 4 is an alternative embodiment of a wire connecting element according to the present invention.

Detailed Description

The invention is explained in more detail below with reference to fig. 1 to 3, wherein like reference numerals indicate like functional and/or structural features.

In fig. 1 to 3, a first exemplary embodiment of a wire connecting element 1 according to the present invention is shown. In fig. 4 an alternative embodiment of a wire connecting element 1 according to the invention is shown.

Viewed from below in the upward direction, the wire connecting element 1 has a holding area a for holding the wire connecting element 1 during winding. Adjacent to the holding area is a double zone portion Z consisting of a pre-assembly portion B and a final assembly portion C adjacent thereto. The function of the double zone portion Z is illustrated by fig. 2 and 3.

The preassembled section B is designed for fixing the wire coil 10 and is here composed, by way of example only, of four complete windings (W1, W2, W3 and W4).

The final assembly section C is designed to have a larger outer circumference than the pre-assembly portion B, and a contact area for the wire coil 10 is formed after the wire coil 10 is pushed or pressed from the pre-assembly portion B onto the final assembly portion C as intended.

Fig. 1 also shows the cross-sectional area of the wire connecting element 1, wherein it can be seen that it is designed to have a cross-section comprising a rectangle with (here four) edges K in the area of the final assembly zone C and to have a cross-section around itAn outer circumference A of the wire connecting element, viewed in the circumferential direction of the central axis, which is substantially constant in the longitudinal direction L_c. The wire connecting element 1 has a rectangular cross section with sharply rounded edges in the region of the preassembly zone B. Adjacent to the final assembly zone C is a connecting portion V having two legs L1, L2.

In fig. 4, the portion a as a holding area is omitted and is replaced by an insertion area which is designed in particular with an insertion tip ES, for example, for inserting and pressing in a wire coil.

However, the embodiments of the present invention are not limited to the preferred exemplary embodiments specified above. On the contrary, many variations and implementations of the embodiments are conceivable, and the solutions and methods shown can be utilized even in the case of fundamentally different embodiments.