TW201304284A - Contact arrangement for direct electric contacting of printed circuit boards - Google Patents

Abstract

The invention relates to a contact arrangement (1) for the direct electric contacting of a counter contact surface, especially a counter contact surface on a printed circuit board, said arrangement comprising a contact housing (1) that has a plurality of parallel contact chambers (3), and a plurality of contact elements (4) that can be inserted respectively into the contact chambers (3) in a fitting direction (6), said contact elements respectively having a contact surface (11) for applying to a counter contact surface in a normal force direction (12). According to the invention, the contact elements (4) comprise at least one through-opening (13) extending transversely to the fitting direction (6) and transversely to the normal force direction (12), and the inserted contact elements (4) are engaged and/or locked in the contact housing (2), against the fitting direction (6), as a result of the at least one through-opening (13) thereof

Description

Contact device for direct electrical contact of a circuit board

The present invention relates to a contact device of claim 1 for electrically contacting a pair of opposing contact faces (especially an opposing contact face on a circuit board).

The control device is mostly composed of a circuit board on which an electronic component is placed and a casing. Generally, a blade rib is mounted on the circuit board in the engine control device to cause an electrical connection between the cable bundle plug and the circuit board. The knife rib is therefore an additional component when the control device is installed.

There are also so-called direct electrical contact means in which the knife ribs are dispensed with and the individual poles of the cable bundle are in direct contact on the circuit board. For this purpose, electrical contact faces ("land") are provided on the circuit board, which are contacted by contact elements which are inserted into a contact housing of the cable bundle plug, and are therefore also referred to as direct plug contacts. The contact surface is mostly contacted by the contact layer of the contact element (that is, in the direction of the normal force), and the protrusion protruding from the contour of the contact element is used to make the contact element in a contact housing. They are latched or latched, but when installed, for example, they prevent the contact elements from passing through a rubber seat seal for sealing.

In this regard, it is an object of the present invention to enable a contact element to be securely engaged or latched in a contact housing in a contact device of the type described above, even if it is not connected. The same is true when the outline of the point element protrudes.

This object is achieved according to the invention by a contact device for direct electrical contact using the features of claim 1 of the patent application.

According to the invention, the contact element has one or two through openings which allow the inserted contact element to engage and/or latch in the chamber of the contact housing against the mounting direction. In addition to pulling the inserted contact element out of the chamber, the contact element can be prevented from falling out when the contact chamber is open to the circuit board. By using the through opening as a snap or latch, the snap hook can be inserted into the through opening as a primary latching means, or a latching bar can be used to pass through all the through openings of the adjacent contact elements as a second latch. means. If the contact element has two through openings, the contact element can utilize a through opening for initial carding and another through opening for secondary locking.

Since the contact element of the present invention does not have an engagement projection protruding from its contour, for example, the rubber element seal provided when the contact element is over-sealed during the mounting process is not hindered.

Other advantages and advantageous designs of the subject matter of the invention are found in the description, drawings and claims.

The invention will now be described in detail by means of two exemplary embodiments illustrated in the drawings.

The contact device (1) shown in Figures 1A and 1B comprises a contact housing (2) [e.g., a contact housing of a cable bundle plug having a plurality of parallel adjacent contact chambers (3)] and A plurality of contact elements (4) (which can each be inserted into the contact chamber (3) in a mounting direction (6) via a chamber opening (5). Contact chambers (4) (also referred to as direct plug contacts) are used to directly contact an opposing contact surface (not shown, particularly a "land") on a circuit board. Each of the chamber walls (7) of the contact chamber (3) is provided with an engaging protrusion (8) protruding toward the chamber opening (5) against the mounting direction (6), which protrudes by a snap hook (8a) Extend to the contact room (3) and go in.

As shown in Figure 2, the contact element (4) can be designed in the form of a flat sheet metal stamped part ("flat joint") (9), a cable ("cable strip") of a line (10) soft Solder, weld or crimp onto it. Here, the contact element (4) has a contact surface (11) (for example formed only by the edge of the sheet metal stamping member) to lean against an opposite contact surface in a normal direction of force (12). Furthermore, the contact element (4) has a circular through opening (13) which extends in a direction perpendicular to the mounting direction (6) and perpendicular to the normal force direction (12). If there is no circular cross section as shown, any other opening cross section can be used. The normal force F _{N of} the contact element (4) is used for contact with the force contact surface. The elastic design of the point surface (11) (for example designed as a contact spring) or the design of the elastic ring (Fig. 2) is applied, or by another additional spring of the contact chamber (3).

As shown in FIG. 1B, the inserted contact elements (4) are engaged with each other in the contact chamber (3) against the mounting direction (6) by the engaging projections (8), and the engaging projections are embedded in the embedded joints. In the through opening (13) of the point element (4), the inserted contact element (4) is crammed from the rear against the mounting direction (6). Since a part of the chamber wall (7) also forms the latch protrusion (8) at the same time, when the adjacent latch chamber is installed, the incompletely mounted contact chamber (3) can be detected by the increase in the erosion force. Because if the latch protrusion (8) does not get stuck in the through opening (13), it will prevent the adjacent contact element (4) from entering its chamber.

In the contact device (1) shown in Figure 3, the inserted contact element (4) utilizes a latch bar (14) against the mounting direction (6) in an adjacently disposed contact chamber (3). The latch is latched in the direction (15) through the array of adjacently arranged contact elements (4) and thus the inserted contact element (4) is held back against the mounting direction (6).

The contact element (4) shown in Figure 4 differs from the contact element (4) shown in Figure 2 in that there is a second through opening (16). It extends along a direction perpendicular to the mounting direction (6) and perpendicular to the normal force direction (12), and the contact element (4) can utilize its first in its contact chamber (3) against the mounting direction (6). The through opening (13) is used for the initial card combination and the second through opening (16) is used for secondary engagement.

The contact elements can be held in the contact chamber (3) of the contact housing (2) [they open against the mounting direction (6)] against the mounting direction (6), for example by means of a separate initial engagement or two Secondary latching means.

(1)‧‧‧Contact devices

(2) ‧‧‧Contact housing

(3) ‧‧‧Contact Room

(4)‧‧‧Contact components

(5) ‧ ‧ room opening

(6) ‧‧‧Installation direction

(7) ‧ ‧ room wall

(8) ‧‧‧ engaging projections

(8a) ‧‧‧ snap hook

(9)‧‧‧Metal sheet stamping parts (flat joints)

(10) ‧‧‧ lines

(11)‧‧‧Contact surface

(12) ‧ ‧ direction of normal force

(13) ‧‧‧first through opening

(14)‧‧‧Lock bar

(15) ‧ ‧ direction

(16)‧‧‧Second through opening

F _N ‧‧‧French power

1A, 1B show a first embodiment of a contact device of the present invention in a schematic manner, having a contact housing and a plurality of contact elements which have not been inserted in FIG. 1A but have been inserted in FIG. 1B. Pointing the housing and engaging therein; Figure 2 is a side elevational view of the contact member shown in Figure 1; Figure 3 is a schematic representation of a first embodiment of the contact device of the present invention inserted into the contact housing and commonly locked therein Latch; Figure 4 is a side view of a contact element modified in Figure 2.

(1)‧‧‧Contact devices

(2) ‧‧‧Contact housing

(3) ‧‧‧Contact Room

(4)‧‧‧Contact components

(5) ‧ ‧ room opening

(6) ‧‧‧Installation direction

(7) ‧ ‧ room wall

(8) ‧‧‧ engaging projections

(8a) ‧‧‧ snap hook

(10) ‧‧‧ lines

(13) ‧‧‧first through opening

Claims (8)

A contact device for electrically contacting an opposing contact surface (particularly an opposite contact surface on a circuit board), having a contact housing (2) and a plurality of contact elements ( 4), the contact housing (2) has a plurality of parallel contact chambers (3), the contact elements (4) can be inserted into the contact chamber (3) in a mounting direction (6) and each has a The contact surface (11) rests on an opposite contact surface along a normal force direction (12), characterized in that the contact (4) element (4) has at least one through opening (13) (16) along Extending perpendicular to the mounting direction (6) and perpendicular to the normal loading direction (12), and the inserted contact element (4) utilizes at least one through opening (13) (16) in the contact housing ( 2) The card is engaged and/or latched against the mounting direction (6). The contact device of claim 1, wherein the contact element (4) has two through openings (13) (16), each in a direction perpendicular to the mounting direction (6) and perpendicular to the method Extend in the direction of the force (10). The contact device of claim 2, wherein the inserted contact element (4) is used in the contact housing (2) against the mounting direction by using a through opening (13) for initial card combination. The other through opening (16) acts as a secondary latch or can be used as a secondary latch. A contact device according to any one of the preceding claims, wherein at least a portion of a chamber wall (7) of the contact chamber (3) is each designed to protrude from the mounting direction (6) (8) The snap projection (6) is embedded in at least one through opening (13) of the inserted contact element (4). The contact device of claim 1 or 2, wherein the inserted contact member (4) utilizes a latch bar (14) as a secondary latch, The latch bar is passed over the rear through at least one through opening (13) of the adjacently disposed contact elements (4). A contact device according to claim 1 or 2, wherein the contact element (4) is designed in the form of a flat contact (9). A contact device according to claim 1 or 2, wherein the contact member (4) is integrally formed from a metal piece. The contact device of claim 1 or 2, wherein the contact element (4) is in the contact chamber (3) of the contact housing (2) which is open opposite to the mounting direction (6) In addition, it is held against the mounting direction (6).