TWI539686B - Contacting inserter for directly contacting a circuit board - Google Patents

Description

Contact plug for direct electrical contact with the board (2)

The invention relates to a contact plug of claim 1 of the patent application.

Control devices in the automotive field are mostly formed by a circuit board and a housing on which electronic components are placed. In a motor control device, a blade edge is typically attached to the circuit board to create an electrically conductive 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 contacts in which the ribs are omitted and the individual poles of the cable ties are directly in contact on the circuit board. For this purpose, contact faces ("land") are provided on the circuit board. This is achieved by directly contacting the contact plug of the contact point of the contact element of the cable bundle plug.

According to the invention, the spring is arranged with its central section in the unsealed region and with its two free spring legs extending through the seal in the past into the sealing region of the contact plug connector. Therefore, the length of the spring is no longer limited by the seal, but an additional length of the magazine is obtained without affecting the overall construction space of the smallest seal. The spring (spring characteristic curve) can be optimized so that a larger working range is obtained and works in the sealed and unsealed areas of the contact plug, the spring being preferably a spring clasp or a long leg spring.

Direct contact in the art of DE 10 2005 063 239 A1, the contact The plug has two mutually pivoted contact carriers which are pretensioned with respect to each other by a snap ring spring which is open against the insertion direction of the contact plug. During the insertion process, all of the spring force is utilized, and the two-contact carrier is pivoted upward using a control wedge on the side of the board. Here, if it is required to exceed the maximum preset operating force in terms of the main body, the operating force can be maintained by using an additional cubit or mover, but the additional component cost is increased.

It is an object of the present invention to reduce the operating force or the insertion force that occurs during installation and disassembly in the case of the above-described type of contact plug.

This object is achieved according to the invention by means of a contact plug having the features of claim 1 of the patent application.

According to the invention, when the plug connector is mounted and disassembled, the spring is first pushed into its pre-engagement position, in which the spring force acting on the contact carrier is reduced, and then the spring is pushed to its end position, In this position, the spring force acting on the contact carrier is greatest, and the contact element is tilted against the contact surface of the board with the associated normal force. With this movable spring, it is possible to achieve the engagement and pull-out force of the contact plug irrespective of the number of poles. With this reduced operating force, a limit (and thus an additional lever or mover must be used) can be moved up a lot.

Preferably, in the end position of the spring, the spring leg is also pushed into an intermediate space, and the two-contact carrier is pivoted upwardly into the space with the control wedge provided on the circuit board, in this way, "contacting the opposite plug It can be protected from being pulled out from the contact plug (for example, built into a car). (anti-theft protection)

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

The invention is described in detail below using the embodiments illustrated in the drawings.

The contact plug (e.g., cable bundle plug) (1) shown in Figure 1 is used to make direct electrical contact between the contact areas ("land") (3) (Fig. 2c) provided on both sides of a circuit board (2). The insertion direction of the contact plug (1) is indicated by (4).

The "contact plug" (1) which can be inserted into the circuit board (2) comprises two pivoted contact carriers (6) which are pivotally connected to each other by a film hinge (5), and a plug is formed therebetween. Connecting the receiving portion (7) (Fig. 2b) to accommodate the circuit board (2) and each having a column of spring-elastic contact elements (8) projecting into the plug-in receiving portion (7) and including a direction opposite to the insertion direction (4) an open V-shaped or U-shaped spring (such as a snap ring spring or a long leg spring) (9) that pretensions the two contact carriers (6) toward each other and includes a control passage (10). Formed between the two contact carriers (6) and beside the plug-in receptacle (7), the control channel (10) is mated with a control wedge (11) provided on the circuit board (2) (figure 2a) When the circuit board (2) is inserted, the two-contact carrier (6) is pivoted upward against the force of the spring (9) and pivoted back by the force of the buckle spring (9), and the control channel (10) The two opposite "control protrusions" (12) of the two-contact carrier (6) are narrowed. A sealing member (13) seals the contact plug (1) in a plug sleeve (14) of a "contacting opposite plug" (15).

Figure 2 shows a conventional "contact plug connector" (20) between the "contact plug" (1) and the "contacting plug" (15). Figures 2a, 2b show the contact plug connector (20) with the contact plug (1) and the plug sleeve (14) partially interposed. The control wedge (11) is located in the control channel (10) but has not yet cooperated with the "control protrusion" (12). The circuit board (2) is located between the two contact carriers (6), but still Not mated with the contact element (8). When further engaged, the control wedge (11) runs onto the two control protrusions (12) such that the two-contact carrier (6) expands against each other against the force of the spring (9), and the contact element (8) ) rises relative to the board (2) (Fig. 2c). If, when further inserted, the control wedge (11) is pushed over on the control projection (12), the two contact carrier (6) is pivoted back by the action of the spring (9). Thus, the contact element (8) drops to the contact surface (3) of the circuit board (2) and contacts the contact surface (3) at the final insertion position (Fig. 2d).

The contact plug (30) shown in Figure 3 differs from the contact plug (1) of Figure 1 in Figure 2 in that the buckle spring or long leg spring (31) can be used with its two spring legs (32) in Figure 3a. The end position shown and the pre-engagement position shown in Figure 3b move. The two spring legs (32) extend past the seal (13) so that the central spring section (33) of the buckle spring (31) is outside the sealed area. The spring force acting between the two spring legs (32) is indicated by F. The contact carrier spring (31) can be moved by hand using a two-positioned mover (34) that can be moved on the outside of the plug housing (35) and fixed in the central spring section (33) on.

The force of the two spring legs (32) is introduced into the contact carrier (6), and at the end position occurs at a distance L1 from the rotation axis (36) of the two-contact carrier (6), and is pre-engaged. The position is at a negative distance -L2 on the side of the rotating shaft (36). (L2<L1). The spring force works in all positions. If the spring force is transmitted by the rotating shaft (36), the effective torque can no longer be generated to press the two-contact carrier (6), and in order to make the two-contact carrier open at the pre-engagement position, the two spring legs are (32) Move out of the rotation axis (36). Thus, the force of the buckle spring (31) is introduced at a negative distance (-L2) from the rotating shaft, and causes a moment to cause the two-contact carrier (6) to expand.

Before the second plug (1) (15) is inserted (mounted), the retaining ring spring (31) is pushed into its pre-engaged position by the mover (34). When the two plugs (1) (15) are inserted into each other, the control wedge (11) runs to the two control protrusions (12), so that the two contact carriers (6) are relatively inflated relative to each other without force, and the contact elements (8) ) rises relative to the board (2). The contact carrier spring (31) is then pushed to its end position such that the two contact carriers (6) are pivoted and taut, and the contact spring (8) is lowered to the circuit board with the associated normal force (2) ) on the contact surface (3). Before the two plugs (1) (15) are removed, the retaining ring spring (31) is moved to its pre-engaged position by the mover (34).

The contact plug (30) shown in Figure 4 differs from the contact plug of Figure 3 in that the spring legs (32) are also pushed into the end position of the buckle spring (31) shown in Figure 4a. In the intermediate space (37) [the two-contact carrier (6) is pivoted upwards into the intermediate space (37) by the control wedge (11) provided on the circuit board (2) and with its extended free end ( 32a) each embedded in a cavity (38) of the plug housing (35). Therefore, at the end position of the buckle spring (31), the two-contact carrier (6) is blocked by the spring leg (32) and cannot be pivoted upward, and the contact plug between the two plugs (1) (15) The connector cannot be loosened. Only when the retaining ring spring (31) is pushed into its pre-engaged position shown in Figure 4b [in this position the spring leg (32) is no longer embedded in the intermediate space (37)] the two-contact carrier (6) The control wedge (11) provided on the circuit board (2) is pivoted upwards, and the contact plug connector between the two plugs (1) (15) can be released. Therefore, the spring (31) must be pushed to the pre-engaged position before the "contacting the opposite plug" (15) can be pulled out of the contact plug (30). In this way, as long as the mover (34) is unable or difficult to detect in the screwed state of the contact opposing plug (15), the contact opposing plug can be protected from the contact plug (30) ( For example, if it is built into a car, it is launched (anti-theft protection).

(1)‧‧‧Contact plug

(2) ‧‧‧ boards

(3) ‧‧‧ Contact area (land)

(4) ‧‧‧Intrusion direction

(5) ‧ ‧ film hinges

(6)‧‧‧Contact carrier

(7)‧‧‧Plug housing

(8)‧‧‧Contact components

(9) ‧ ‧ spring

(10) ‧‧‧Control channel

(11)‧‧‧Control wedge

(12)‧‧‧Control projections

(13)‧‧‧Seal

(14)‧‧‧Drawing sleeve

(15)‧‧‧Contacting the opposite plug

(20)‧‧‧Contact plug connectors

(30)‧‧‧Contact plug

(31)‧‧‧Long leg springs

(32)‧‧‧Spring legs

(33)‧‧‧Central spring section

(34)‧‧‧Mobile

(35)‧‧‧ plug housing

(36)‧‧‧Rotary axis

Figure 1 is a perspective side view of a conventional contact plug; Figures 2a - 2d are a longitudinal section of a contact plug connector known from the German Patent Publication No. DE 10 2005 063 239 A1, which has a "contacting plug", Figure 1 The contact plug is partially (Fig. 2a, 2b) or almost completely (Fig. 2c) or completely (Fig. 2d) inserted into the contact counter, wherein Fig. 2a shows a longitudinal section outside the contact plug, and Fig. 2b~ 2d shows a longitudinal section through the contact plug; Figures 3a, 3b are longitudinal cross-sectional views similar to one shown in Figure 2a by one of the contact plugs of the present invention, showing a contact carrier spring at its end position (Figure 3a) and in the pre-card Figure 4a, 4b is the contact plug of Figure 3 with a modified contact carrier spring that locks the contact opposing plug in its end position (Figure 4a) to prevent pulling out, The contact plug is released in its pre-engaged position (Fig. 4b).

(1)‧‧‧Contact plug

(2) ‧‧‧ boards

(4) ‧‧‧Intrusion direction

(6)‧‧‧Contact carrier

(12)‧‧‧Control projections

(13)‧‧‧Seal

(30)‧‧‧Contact plug

(31)‧‧‧Long leg springs

(32)‧‧‧Spring legs

(33)‧‧‧Central spring section

(34)‧‧‧Mobile

(35)‧‧‧ plug housing

(36)‧‧‧Rotary axis

Claims (8)

A contact plug (40) for directly electrically contacting a circuit board for contacting a contact surface (3) provided on a circuit board (2), having: two mutually connected contact carriers, Forming a plug-in receiving portion (7) for accommodating the circuit board (2), and each of them has at least one contact member (8) protruding into the plug-in receiving portion (7), a spring (31), The spring is biased against the two-contact carrier (6) with its two spring legs (32) and the two-contact carrier (6) is pre-tensioned toward each other, a control channel (10), in the second connection Between the point carrier (6) and at the side of the side of the plug-in receptacle (7), the control channel is narrowed by a plurality of mutually opposite control projections (12) of the two-contact carrier (6) and The control wedge (11) on the circuit board (2) cooperates to pivot the two-contact carrier (6) upward when the circuit board (2) is inserted, characterized in that the spring leg (32) is along the contact plug (30) The insertion direction (4) extends, and the spring (31) can be moved between the end position and a pre-engagement position on the contact carrier (6) by the two spring legs (32), wherein in the end position, the spring The force of the two spring legs (32) is transmitted to the joint Distance (L1) from the rotation axis of two support points (6) when the body (6) (36) is greater than in the pre-engagement position. The contact plug of claim 1, wherein: in the pre-engaged position, the two spring legs (32) are transmitted to the contact carrier (6) at the rotation axis of the two-contact carrier (6) (36). ) reached in the middle. For example, in the contact plug of claim 1, wherein: in the pre-engaged position, the two spring legs (32) are transmitted to the contact carrier. (6) A negative distance (-L2) on the side of the rotating shaft (36) of the two-contact carrier (6). A contact plug according to any one of the preceding claims, characterized in that a mover (34) is movably guided on the outside of the plug housing (35) and coupled to the spring (31) for movement. . For example, the contact plug of claim 1 or 2, wherein the spring (31) is designed in the form of a snap spring or a long leg spring. The contact plug of claim 1 or 2, wherein: in the end position of the spring (31), the spring legs (32) are each pushed into an intermediate space (37), the two contact carrier (6) It is pivoted upwardly into the intermediate space (37) in cooperation with the control wedge (11) provided on the circuit board (2). The contact plug of claim 6 wherein the free end (32a) of the spring leg (32) is embedded in a cavity (38) of the plug housing (35). A direct contact plug connector having a contact plug of any of the preceding claims and having a contact opposing plug (15) having a circuit board (2) and a control wedge (11).