DE102011076176A1 - Steckkontaktierung - Google Patents

Abstract

The invention relates to a device and a method for producing an electrical contact between a printed circuit board substrate (30) which has at least one contact surface (42, 44) and at least one plug-side contact (64). At least one contacting element (46, 48) is arranged in an insertion area (62), which comprises a deflectable part (56) and a contact arm (80). Its contact point (50) can be set against the at least one contact surface (42, 44).

Description

State of the art

Out US 5,531,615 is known a plug-in contact, in which an electronic connection element for edge attachment to electronic devices is used. The connector includes a pair of housing members adapted to define an elongate slot. This is a pair of oppositely arranged, mutual forces generating spring elements which are arranged such that they receive a plug contact and exert on this a pressing force.

In previously used plug contacts according to the prior art higher insertion forces are required to produce a plug-in contact; Furthermore, the generation of the connector is quite cumbersome. Furthermore, in the case of plug-in contacts, there may be potential damage to joining partners to be contacted with one another, in which case both damage to the plug contacts and damage to the contacts on the respective printed circuit board to be contacted may occur.

Presentation of the invention

According to the invention, a plug-in contact is proposed, in which standing by an insertion of a plug-in element with contacts in electrical connection contacting elements are deflected so that they are applied with a contact force on contact surfaces ("Lands"), for example, at the top and bottom of the axial Direction plug connector inserted into a plug. The solution proposed according to the invention makes it possible to design a printed circuit board or a contacting provided thereon in such a way that it provides only a guiding function. The insertion in the insertion direction of a plug contact requires only before reaching the final electrical contact a certain force, however, increases linearly and not gradually. By this force is a potential damage to the contact surfaces ("Lands"), which are located on at least one side of the plug contact and damage to the corresponding counter contact on the circuit board excluded.

In an advantageous embodiment of the concept underlying the invention, the contacting elements, each having a contact point, designed as elastic elements, so for example as a spring blades. These on the one hand can cause a deflection of contact elements provided on the contact points and on the other hand compensate for tolerances, since the Kontaktierungsweg, the contacting elements for contacting the at least one contact surface ("Lands") is sized to the plug contact so that match or compensate for manufacturing tolerances can be.

In a particularly advantageous embodiment of the invention underlying idea spaced contacts are arranged such that they limit an insertion opening for a plug contact. Opposite, the insertion opening for the plug contact limiting contacts each have a resiliently formed contacting element, which is deflected by insertion of the plug contact in such a way that on the resilient contact elements formed contact points on contact surfaces ("Lands"), at least one contact surface , which is located on the plug contact in an axial extension, are employed. By the insertion movement of the plug contact in the resilient contact elements, which limit the insertion of the plug contact, a position of the contact points is ensured by the presence or the deflection of the contacting an extending in the axial direction on at least one side of the plug contact surfaces. On the other hand, the contact surfaces or "lands", which are formed on at least one side of the plug contact, dimensioned in the axial direction such that a sufficiently large area for the contact is given by the contact points of the contacting elements on the plug contact.

Advantageously, the plug contact has a rounded trained, for example, made of molding compound deflecting element, which deforms the contacting elements in execution of the insertion process such that elongated by the deflection of, for example, resiliently formed fins in one direction, an adjusting movement of contact points to the in the axial direction formed contact surfaces on at least one side of the plug contact.

As long as the plug contact remains between the contacting elements, it is ensured on account of the deflection of the resiliently configured spring blades that the contact points with a well-defined spring force are applied to the contact surfaces extending in the axial direction on at least one side of the plug contact.

In a particularly advantageous manner, at one of the plug opening facing end side of Printed circuit board arranged a nose-shaped deflecting element, which is rounded on its side facing the insertion opening. The in the insertion direction, preferably horizontally extending contact surfaces on one or both sides of the printed circuit board end are elongated, so that it is ensured that when generating a contact force on the contact points, which are formed at the ends of resiliently formed contact arms, and the contact surfaces, an electrical connection can be made by maintaining a contact force. As long as formed on the spring-trained contact elements auszulenkende parts remain deflected by the deflection element, resiliently formed contact elements, in particular the resiliently formed contact arms and the contact elements formed thereon are employed with a well-defined contact force to the provided on at least one side of the circuit board contact surface.

As long as the deflection element is inserted between the parts to be deflected of the at least one contact element, as long as counteracted in a countermovement against the deflection of the resilient contact elements in the region of the auszulenkenden parts the resilient contact arms with contact points formed thereon to the contact surfaces on at least one side of the circuit board end.

Brief description of the drawings

With reference to the drawing, the invention will be described below in more detail.

It shows:

1 and 2 Plug housing and plug contacts according to an embodiment of the prior art,

3 a first embodiment of the inventively proposed device for making an electrical contact,

4 an insertion phase of the printed circuit board end,

5 the contact time at which the rounded deflecting element contacts the resiliently formed, electrical contact elements,

6 the further insertion process of the printed circuit board end and of the deflection means received thereon between the resiliently formed contact elements, the deflection movement of the same and the adjustment movement of the contact arms with contact points,

7 the finally produced electrical contact,

8th an inserted circuit board and

9 a further embodiment of the invention proposed device for producing an electrical contact.

The representations according to the 1 and 2 Variations of connector housings and contacts according to the prior art can be seen.

1 shows a plug 10 that has a plug housing 12 that is in a series of contact straps 14 are included. The contact hanger 14 are on a contact carrier 16 executed, that of the connector housing 12 is enclosed. 2 shows the in the connector housing according to 1 insertable plug-in elements 18 that a contact cheek 20 have, wherein the plug-in elements 18 over a crimp connection 22 connected with a cable. On the contact cheek 20 opposite side are the plug-in elements 18 with snap hook 24 Mistake.

variants

The representation according to 3 is a first embodiment of the present invention proposed device for making an electrical contact in more detail.

From the illustration according to 3 shows that at one end of a printed circuit board substrate 30 a nose-shaped deflecting element, for example designed as a molding compound molded nose is arranged. The printed circuit board substrate 30 has a first page 32 and one of these opposite second page 34 which extend in a substantially horizontal direction parallel to each other. On the first page 32 of the printed circuit board substrate 30 there is a first contact area 42 ("Country"), while on the second page 34 of the printed circuit board substrate 30 a second contact surface 44 ("Country") is located. Both contact surfaces 42 . 44 also extend substantially in the horizontal direction parallel to each other and extend substantially in parallel to a plug, see position 66 in 3 ,

From the illustration according to 3 further states that on connector-side contacts 64 that have an insertion area 62 define, in each case a first contact element 46 and a second contact element opposite this 48 are arranged. The two opposing contact elements 46 respectively. 48 are essentially resilient and are made of metallic Material manufactured. In the in 3 illustrated embodiment of the resilient contact elements 46 respectively. 48 These include a contacted part 54 , The contacted part 54 extends - also with resilient properties - starting from the opposite plug-side contacts 64 which the insertion area 62 limit, to a junction 52 , At the junction 52 goes the contacted part 54 the contact elements 46 . 48 in one with reference number 80 indicated resilient contact arm on, at the end of which is a thickened trained formed as a material accumulation contact point 50 located.

From the branch 52 in the opposite direction to the spring-trained contact arm 80 extending, extending at the first contact element 46 or on the second contact element 48 each to be deflected parts 56 the contact elements 46 . 48 , each in an open end 58 leak.

As shown in the illustration 3 shows, extend the parts to be deflected 56 of the first contact element 46 and the second contact element 48 at the open end 48 converging, ie the open ends 58 run towards each other.

In the in 3 shown - not contacted - position of the printed circuit board substrate 30 with the first contact element 46 and the second contact element 48 , define the two undeflected contact points 50 at the ends of the resilient contact arms 80 an opening distance 60 , This opening distance 60 is greater than the thickness of the printed circuit board substrate 30 , Based on the plan sides of the two extending in the horizontal direction, oppositely arranged contact surfaces 42 . 44 , At one end 36 of the printed circuit board substrate 30 is the deflection element 38 in nose shape, preferably made of a molding compound and with a rounding 40 arranged arranged, which already to a part in the insertion direction 66 (Also referred to as axial feed) in the insertion 62 is introduced.

The representation according to 4 can be seen that in this position of the printed circuit board substrate 30 this, in relation to the insertion area 62 , is partially inserted into this, without that with the rounding 40 provided deflecting element 38 the mutually assignable deflectable parts 56 both of the first contact element 46 , as well as the opposite second contact element 44 touched. The representation according to 4 corresponds substantially to a reduced scale of the representation according to 3 as described above.

5 shows the time at which the preferred nose-shaped deflection element 38 facing each other auszulenkenden parts 56 the first and the second contact element 46 respectively. 48 just touched. Like a synopsis of 4 and 5 it can be seen, the printed circuit board substrate 30 in the insertion direction 66 (axial feed) in through the opposite contact points 50 limited insertion area 62 inserted. 3 shows that the distance 60 between the insides of the opposed contact points 50 the thickness of the printed circuit board substrate 30 in the area of the first contact surface 42 and the second contact surface 44 exceeds, allowing insertion of the PCB end 30 between the two contact elements 46 . 48 takes place with game, whereby manufacturing tolerances can be compensated in an advantageous manner and a simpler mounting option is given.

In 5 that the contact time 70 between the deflection element 38 and the parts to be diverted 56 shows, are the contact points 50 at the ends of the contact arms 80 in one of the contact surfaces 42 . 44 ("Lands") parked position.

6 It can be seen that upon further insertion of the end over an edge of the printed circuit board substrate 30 between the contact elements 46 . 48 their parts to be deflected 56 through the deflection element 38 , a deflection movement 72 the open ends 58 causing, to be deformed. From the illustration according to 6 shows that the parts to be diverted 56 of the first contact element 46 and the second contact element 48 be spread outwards. With this deflection movement 42 the parts to be deflected 56 At the same time, a reference number is used 74 identified adjusting movement of the contact points 50 to the contact surfaces 42 . 44 associated. Due to the design of the inventively proposed device for making an electrical contact is simultaneously with the deflection movement 72 the open ends 78 the resilient contact elements 46 . 48 a pitching movement in Anstellrichtung 74 the contact arms 80 with the contact points arranged thereon 50 reached. Due to the fact that the deflection element 38 , For example, nose-shaped and made of molding compound, between the parts to be deflected 56 the resilient contact elements 46 . 48 permanently employed, become the contact points 50 simultaneously in the opposite direction to the deflection 72 ie in the direction of adjustment 74 to the contact surfaces 42 . 44 hired.

7 it can be seen that as long as the deflecting element 38 between the parts to be deflected 56 the resilient contact elements 46 . 48 remains inserted, these are spread apart, so that taking advantage of the spring action of the contact arms 80 the contact points 50 with a contact force 78 on both sides of the opposite, substantially parallel and extending in the horizontal direction contact surfaces 42 . 44 be employed. This means that as long as the PCB substrate 30 with its deflection element 38 between the parts to be deflected 46 immersed, at the same time the contact force 78 the contact points 50 at the ends of the resiliently formed contact arms 80 with the contact force 78 to the contact surfaces 42 . 44 be employed. To make an electrical contact and to secure it, forces in the height between 2 N and 3 N are required, based on each contact point. If you include multiple contact points, this force can become relatively high. However, components such as circuit board or control units are fixed in the final state by means of locking elements, so that the contact force does not have to be taken over by the electrical contact alone, but is applied via locking elements, so that the electrical contact not by itself, for example, occurring during operation vibrations solves.

As from the figure sequence the 4 . 5 . 6 . 7 can be seen, the electrical contact is by the insertion of the example, nose-shaped with a rounding 40 trained deflecting element 38 generated. The two substantially opposing contact elements 46 . 48 are preferably made of a good conductive material or a good electrical conductivity properties having alloy. Due to the distance between the two opposite contact points 50 in non-contacted state, compare distance 60 as shown in 3 , on the one hand, easy assembly is possible and on the other hand ensures a balance of tolerances.

The representation according to the figure sequence 4 . 5 . 6 and 7 is further removed that only shortly before reaching the end position, ie after passing through the insertion 66 , a force is needed, namely, when the parts to be deflected 56 the contact elements 46 . 48 be pushed apart, what by the rounding 40 having deflection means 38 he follows. By inventively proposed solution force-free insertion is achieved until shortly before the end position of the connector. Only then is a force application necessary. Because the force 74 with which the contact points 50 at the ends of the resiliently formed contact arms 80 to the contact surfaces 42 . 44 towards the end of the insertion movement of the PCB end 30 in the insertion area 62 is generated, the contact surfaces 42 . 44 also only towards the end of the introduction movement 66 by the contact force 74 acted upon, thereby advantageously damaging the contact surfaces 42 . 44 or the circuit board 30 can be avoided. The proposed solution according to the invention is merely a guide of the printed circuit board end or the printed circuit board edge 30 to which the deflecting element 38 is arranged, required; it is no longer necessary to open. Only shortly before reaching the end position of the PCB edge or PCB end 30 between the opposing contact elements 46 . 44 , is the contact force 74 generated.

8th shows an inserted printed circuit board with on the side surface of the rounded trained deflecting element 38 salaried shortened trained diverted parts 57 , In contrast to the representation according to 7 are in the presentation according to 8th the deflection elements 57 formed shortened, so that they are no longer placed against the insertion direction in its final position, ie after the full impressions, but exactly in the transverse direction of the deflection 38 are employed. As a result, force components which oppose the insertion direction of the printed circuit board substrate 30 act, excluded, the resulting force perpendicular to the deflection 38 is directed.

The representation according to 9 shows a further embodiment of the invention proposed device for producing an electrical contact.

9 shows that also in this embodiment of the invention proposed solution, analogous to the embodiment according to 3 , the circuit board 30 at one, preferably both sides 32 . 34 each a substantially horizontally extending contact surface 42 respectively. 44 having. The two opposing, substantially planar and extending parallel to each other contact surfaces 42 . 44 have a length that is in the insertion direction 66 extends. At the edge of the PCB or the end of the PCB 30 is the nose-shaped deflecting element 38 arranged, which the rounding 40 having.

Also in the in 9 shown further embodiment of the invention proposed device for making an electrical contact, are within the insertion 62 between two opposite plug-side contacts 64 each resiliently formed contact elements 46 respectively. 48 arranged. The contact elements 46 respectively. 48 each comprise facing each other to be deflected parts 56 , These extend, starting from the open end 58 , in the direction of a joint 82 , At the hinge points 82 , each with a joint carrier 84 with the assigning plug-side contacts 64 electrically connected, go the parts to be deflected 46 that by the the rounding 40 having deflecting element 38 be contacted in the contact arms 80 at the end of which the points of contact assigned to each other 50 are located. By reference 60 the distance is indicated, in which the mutually facing inner sides of the contact points 50 at the ends of the contact arms 80 opposite each other.

Once with a progressive insertion movement 66 (axial feed) of the PCB edge or of the PCB end 30 the deflection element 38 , which is preferably nose-shaped, the open ends 58 the mutually assignable parts to be deflected 56 touched, there is a simultaneous pivoting movement in the direction of rotation 86 the contact points 50 receiving contact arms 80 to the contact surfaces 42 . 44 , Analogous to in 3 shown first embodiment of the invention proposed device for making an electrical contact, goes with the deflection of the parts to be deflected 56 the contact elements 46 respectively. 48 their distortion 86 around the hinge points 82 accompanied and simultaneously with the deflection of the parts to be deflected 56 become the contact points 50 the resilient trained contact arms 80 towards the end of the insertion movement 66 the PCB edge or PCB end 30 in the insertion area 42 to the contact surfaces 42 . 44 employed, which can be achieved already mentioned above, in connection with the first embodiment already described advantageous effects.

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

• US 5531615 [0001]

Claims (10)

Device for producing an electrical contact between a printed circuit board substrate ( 30 ), which has at least one contact surface ( 42 . 44 ) has at least one plug-side contact ( 64 ), characterized in that in an insertion area ( 62 ) at least one contacting element ( 46 . 48 ), which has a deflectable part ( 56 ) and a contacting arm ( 80 ). Device according to claim 1, characterized in that on an end face ( 36 ) of the printed circuit board substrate ( 30 ) a rounding ( 40 ) having deflection element ( 38 ) is trained. Device according to one of the preceding claims, characterized in that the at least one contacting element ( 46 . 48 ) a deflectable part ( 56 ), whose open end ( 58 ) the deflection element ( 38 ) is opposite. Device according to one of the preceding claims, characterized in that on the at least one contacting element ( 46 . 48 ) a contact arm ( 80 ) forming a contact point ( 50 ) is formed. Device according to one of the preceding claims, characterized in that the contact arm ( 80 ) around a joint ( 82 ), which at the plug-side contact ( 64 ) is arranged, in Anstellrichtung ( 74 ) is pivotable. Device according to one of the preceding claims, characterized in that the contact arm ( 80 ) at the at least one contact element ( 46 . 48 ) from a branch ( 52 ) at which the contacted part ( 54 ) and the deflectable part ( 56 ) converge. Device according to one of the preceding claims, characterized in that on the contact arm ( 80 ) a contact point ( 50 ) which is connected to an opposite contacting point ( 50 ) an insertion area ( 62 ) limited. Device according to one of the preceding claims, characterized in that on the printed circuit board substrate ( 30 ) - in insertion direction ( 66 ) - at least one contact surface ( 42 . 44 ) is trained. Device according to one of the preceding claims, characterized in that the contact arm ( 80 ) over the joint ( 82 . 84 ) with the plug-side contact ( 64 ) is electrically connected, or via a contacted part ( 54 ) starting from the branch ( 52 ), electrically with the frontal contact ( 64 ) connected is. Method for producing an electrical contact with a device according to one of Claims 1 to 9, with the following method steps: a) Inserting a device into a printed circuit board ( 30 ) provided deflection device ( 38 ) in an insertion area ( 62 ), b) deflection of contact elements ( 46 . 48 ) during movement of the printed circuit board ( 30 ) in the insertion direction ( 66 ) and c) simultaneously with process step b) the employment of contact arms ( 80 ) to at least one contact surface ( 42 . 44 ) of the printed circuit board ( 30 ), d) maintaining a contact force ( 78 ) to the at least one contact surface ( 42 . 44 ) by maintaining the deflection movement ( 72 ) of the at least one contact element ( 46 . 48 ) with inserted circuit board ( 30 ).

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