DE102020005298A1 - Electrical connection socket for connection to at least one male part - Google Patents

Abstract

The invention relates to an electrical connection socket for connection to at least one plug-in part. The connection socket has at least one socket element and at least one insulating housing part. The socket element has a fastening tab, a crimping tab and two mutually spaced, opposite flexible contact elements which are connected to one another in a U-shape by a connecting part. So that a connector socket can be provided that is light and compact for the vehicle sector and still has a certain stability, it is proposed according to the invention to form a latching lug with a latching surface for latching and locking the socket element with the housing part. Furthermore, it is proposed that each contact element is designed with an end face for securing the socket element in the housing part and that the contact elements for clamping and contacting the plug part can be bent from an initial position into an expanded position in such a way that the two end faces are in the expanded position with the two second Stop surfaces can be brought into contact.

Description

The invention relates to an electrical connection socket for connection to at least one plug-in part, having at least one socket element and at least one insulating housing part with inner walls for accommodating the at least one socket element, the socket element having a fastening tab for mechanically fastening a cable, a crimping tab for connecting the stripped cable. Furthermore, the connecting socket has two spaced, opposite flexible contact elements which are connected to one another by a U-shaped connecting part in such a way that a receiving space is formed for the plug-in part and the connecting part, which extends along the receiving space and for connecting the two contact elements, the crimping tab and the fastening tab is formed on.

From the DE 10 2018 125 964 A1 a one-piece socket contact element for an electrically conductive connection is known, which has a contact box in the contact area for producing a detachable connection with a contact box plug. In its accommodation space, the contact box has contact elements which, in the form of cylindrical lateral surfaces, make contact with the plug. An orientation lip is arranged on the outside of the contact box, with which the socket contact element is introduced into a contact carrier or into a housing and is latched by means of a lug. A disadvantage of the prior art is that the nose has a small contact surface with the housing and can therefore only provide a small amount of support.

The object of the invention is to provide a connecting socket with socket element and housing part, which is designed to be lightweight and compact in terms of its geometric dimensions for the automotive sector, and easy to manufacture and yet stable enough to withstand any - even higher - tensile forces that occur act the socket part to hold up.

The object of the invention is achieved by the connection socket according to claim 1.

The object is characterized in that a latching lug with a latching surface for latching and locking the socket element with the housing part is formed on a surface of the connecting part facing away from the receiving space, the housing part having a first stop surface on an inner wall for positively receiving the latching surface; and each contact element has a first leg wall and a second leg wall connected thereto, the first leg walls each having an insertion bevel for inserting the plug part and the second leg walls each having an end face for securing the socket element in the housing part, the housing part being formed on two inner walls each have a second stop surface for receiving the end faces in a non-positive manner, the contact elements for clamping and contacting the plug-in part being bendable from an initial position into an expanded position in such a way that the two end surfaces can be brought into contact with the two second stop surfaces in the expanded position.

The electrical connection socket according to the invention can be used in particular in motor vehicles.

That according to claim 1 latches or locks the latching lug with its latching surface to a first stop surface has the advantage that the socket element is seated firmly in the housing part and a non-detachable connection is created between the housing part and socket element for further use or plugging into a plug or plug strip .

The fact that each contact element has a first leg wall and a second leg wall connected thereto has the advantage that each contact element has a concave shape which bears against the plug-in part at its bulge for contacting. A one-piece component can be produced as a result of the connection, which advantageously saves costs. The fact that the first leg walls each have an insertion bevel for inserting the plug-in part ensures that the plug-in part can be inserted securely or, conversely, that the electrical connecting socket can be securely plugged onto a plug-in part. Advantageously, the second leg walls each have an end face, and the housing part is correspondingly designed in a complementary manner on two inner walls each with a second stop face. Thus, the end face of the respective second leg wall is received in a non-positive manner by the respective second abutment surface. Thus, in addition to the latching by means of the latching lug and the first stop surface, a second latching or securing for securing the socket element in the housing part is possible. Advantageously, the force that occurs when the cable is pulled is distributed over a larger area, namely the first and the second stop surface, and the electrical connection element is not only more stable due to the higher holding force, but is also very compact and flexible due to the structure according to the invention thus suitable, for example, for the vehicle sector.

Advantageously, the contact elements for clamping and contacting the male part of an initial position into an expanded position in such a way that the two end faces can be brought into abutment with the two second stop surfaces in the expanded position. In this way, several functions can be combined in one element, which contribute to the miniaturization and material saving of the device according to the invention. Advantageously, the contact elements not only clamp the plug-in part and establish the electrical contact, but also increase the holding force as soon as the cable is pulled. Furthermore, the contact elements are closer together in the initial position, so that the socket element is narrower overall. As a result, the opening in the housing part is correspondingly narrow and the housing part is therefore more stable.

Advantageously, the socket element is formed in one piece by a forming process, in particular a stamping and bending process, which results in a favorable production that does not require welding.

In this case, it is expediently provided that the contact elements in a plug-side contact area of the socket element protrude in areas into the receiving space. The fact that the respective two leg walls of the contact elements for clamping and contacting the plug-in part are designed essentially concavely or V-shaped or arc-shaped in order to protrude into the receiving space, there is the possibility that the flexible contact elements can be moved from an initial position to a Expanded position are laterally deflected.

The fact that the two contact elements are spaced apart laterally from a central axis in the direction of extension in such a way that their distance from one another is smaller, i.e. the clear width is smaller than the thickness of the plug-in part to be inserted, enables the socket to be connected to the plug with a precise fit.

In the initial position of the contact elements, the socket element is advantageously latched to the housing part primarily by the latching lug. The position of the socket element in the housing part is thus defined and thus the introduction of the plug part is also clear.

The fact that the socket element (200) is primarily latched to the housing part (300) by the latching lug (210) in the widened position of the contact elements (220) and can secondarily be latched to the second stop surface (320) results in the advantage that in addition to the Latching surface additionally counteract the two end faces of a force acting in the longitudinal direction on the bushing element by contacting the correspondingly designed housing sections.

Advantageously, the latching lug is ramp-shaped, with the insertion of the socket element into the housing part resulting in a guide that leads to locking.

The two second stop surfaces are expediently designed as complementary projections on the inner wall of the housing part.

Further details, features and advantages of the present invention result from the following description of a particular exemplary embodiment with reference to the schematic drawings.

• 1 ein Buchsenelement in perspektivischer Darstellung,
• 2 perspektivischen Längsschnitt der erfindungsgemäßes elektrischen Verbindungsbuchse,
• 3A Schnittdarstellung einer Draufsicht auf die Kontaktelemente im Gehäuse in einer Ausgangsstellung und
• 3B Schnittdarstellung einer Draufsicht auf die Kontaktelemente im Gehäuse in einer Aufweitstellung.

It shows:

• 1 a socket element in a perspective view,
• 2 perspective longitudinal section of the electrical connection socket according to the invention,
• 3A Sectional view of a plan view of the contact elements in the housing in an initial position and
• 3B Sectional representation of a plan view of the contact elements in the housing in an expanded position.

1 shows a perspective view of a socket element 200 in a housing 300, see 2 , is recoverable. The socket element 200 has three areas, a contact area KB, a connection area VB and an insulating area IB, and is made of a metallic material. A cable 600 (not shown) to be connected can be clamped mechanically to the socket element 200 via a fastening strap 207, which is arranged in the insulating area IB. A plug-in part 400 to be inserted (not shown) is inserted in the direction of insertion E into the contact area KB. The connection area VB lies between the contact area KB and the insulating area IB. A crimping lug 206 is arranged in the area, which can electrically conductively connect a stripped conductor of the cable 600 to the socket element 200 via the crimped crimping lug 206 . In the exemplary embodiment shown, the socket element 200 is produced in one piece from an electrically conductive stamped part. The entire socket element 200 is arranged within an insulating housing part 300, see FIG 2 . A contact element 220 is arranged on both sides of a central axis M of the socket element 200 in the contact area KB. The two contact elements 220 are connected to one another via a connecting part 205, which extends along the insertion direction E to the fastening tab 207, and form a receiving space 500 for the plug-in part 400 (not shown). the Receiving space 500 is essentially U-shaped and is covered by connecting part 205 . A latching lug 210 with a latching surface 211, which is arranged on the connecting part 205 or protrudes from it, was formed from the stamped part by a forming process. If the socket element 200 is inserted into the interior of the housing part 300, the latching lug 210 is used for the primary latching of the socket element 200 with the insulating housing part 300.

The contact elements 220 each have a first leg wall 221 on the plug contact side and a second leg wall 222 in the insertion direction E. Because the two first leg walls 221 each form insertion bevels, they protrude in the direction of the interior receiving space 500 and the plug-in part 400 can be inserted with a precise fit. The respective second leg walls 222 adjoin in such a way that a concave shape of the two contact elements 220 arises. In the area of this course with the smallest distance between the two contact elements 220 to one another, not only is electrical contact made with the plug-in part 400, but the plug-in part 400 is also releasably clamped. The flexible configuration of the interacting contact elements 220 increases the distance when the plug-in part 400 is inserted in such a way that the contact elements 220 widen from the inside of the receiving space 500 outwards in the direction of the housing walls. In the contact area KB there is enough space inside the housing so that the contact elements 220 can move away from one another in order to receive a plug contact.

2 shows a longitudinal section along the central axis M through the electrical connection socket 100 according to the invention. For the sake of clarity, the crimping tab 206 and the fastening tab 207 can be seen in the uncrimped state. Since the latching lug 210 is ramp-shaped, a complementary inclined surface 315 of the housing part 300 causes the latching surface 211 to first latch with a first stop surface 310 of the housing part 300 after insertion. The socket element 200 is firmly connected to the housing part 300 and can be securely attached to a contact strip be positioned to receive the male part 400. The plug-in part 400 is positioned between the connection part 205 and a lower housing wall 330 and protrudes in the insertion direction E out of the contact area KB, partially into the connection area VB and, depending on the design, also into the insulating area IB.

The invention is not limited to a single female connector 100 for electrically connecting to a single male member 400. The electrical connecting socket 100 can have a multiplicity of socket elements 200 with a multiplicity of housing parts 300, resulting in an arrangement which interacts accordingly with the contact strip, which likewise has a multiplicity of plug-in contacts.

In 3A is a horizontal section in the contact area KB with a view of a housing wall 330, which extends along the insertion direction E through the electrical connection socket 100 according to the invention. 3A shows the contact elements 220 in an initial position in which no plug-in part 400 has yet been plugged in in the direction of insertion E. Because the flexible contact elements 220 are at a smaller distance from one another in this initial position, the socket element 220 can be inserted into the housing part 300 through a smaller housing opening. As already explained above, the socket element 200 is firmly connected to the housing part 300 by means of a locking lug 210 after it has been inserted. If the plug-in part 400 is now plugged into the socket element 200 in the insertion direction E, this plug-in process takes place safely guided along the insertion bevels of the first leg walls 221 of the contact elements 220. By receiving the plug-in part 400, the two flexible contact elements 220 are widened and move away from each other in direction housing walls.

After inserting the plug-in part 400, the contact elements 220 are in an expanded position, which 3B is shown. In the widened position, the two opposing contact elements 220 fulfill three functions. They hold the plug-in part 400 with their material-related restoring force and establish the electrical contact between the cable 600 and the plug-in part 400. In addition, they enable a stable stop in the housing part 300. When the plug-in connection created in this way is released again, the flexible contact elements 220 move towards one another and are in their initial position. When expanding by inserting the plug-in part 400 in the insertion direction E, the end faces 223 of the respective second leg wall 222 are brought into a position that allows a stop. A second stop surface 320, which is correspondingly located inside the housing, strikes when a train is exerted on the cable 600, for example when the electrical system is installed in a motor vehicle or the like. Since this usually takes place only after the plugs have been connected to one another, it is advantageous that the end faces 223 only move after the insertion of the plug part 400 into the receiving space 500 between the con clock elements 220 expand in a direction in which a stop on the second stop surfaces 320 can take place. The end faces 223 and the second stop faces 320 then come into contact and the housing projection with the second stop face 320 counteracts any tensile force that may occur. This serves to secure the socket element 200 in the housing part 300. These second stop surfaces 320 in cooperation with the first stop surface 310 withstand a greater tensile force due to the increase in the overall surface.

Reference List

100

Electrical connection socket

200

socket element

205

connection part

206

crimp tab

207

fastening tab

210

detent

211

rest area

220

contact elements

221

first thigh wall

222

second thigh wall

223

face

300

housing part

310

first stop surface

315

bevel

320

second stop surface

330

housing wall

400

male part

500

recording room

600

cable

KB

contact area

vb

connection area

IB

isolation area

E

insertion direction

M

center axis

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was 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.

Patent Literature Cited

• DE 102018125964 A1 [0002]

Claims (9)

Electrical connection socket (100) for connection to at least one plug-in part (400), having at least one socket element (200) and at least one insulating housing part (300) with inner walls for accommodating the at least one socket element (200), the socket element (200) having: - a fastening lug (207) for mechanically fastening a cable (600), - a crimping lug (206) for electrically connecting the stripped cable (600) and - two flexible contact elements (220) located opposite one another and spaced apart and connected by a connecting part (205 ) are connected to one another in a U-shape such that a receiving space (500) is formed for the plug-in part (400) and - the connecting part (205), which extends along the receiving space (500) and for connecting the two contact elements (220), of the crimping lug (206) and the fastening lug (207), characterized in that on a surface of the V connecting part (205), a latching lug (210) with a latching surface (211) for latching and locking the socket element (200) with the housing part (300) is formed, the housing part (300) having a first stop surface (310) on an inner wall for the non-positive connection having receiving the detent surface (211); and each contact element (220) has a first leg wall (221) and a second leg wall (222) connected thereto, the first leg walls (221) each having an insertion bevel for inserting the plug-in part (400) and the second leg walls (222) each having an end face (223) for securing the socket element (200) in the housing part (300), the housing part (300) having a second stop face (320) on each of two inner walls for receiving the end faces (223) in a non-positive manner, wherein the contact elements (220) for clamping and contacting the plug-in part (400) can be bent from an initial position into an expanded position in such a way that the two end faces (223) can be brought into abutment with the two second stop surfaces (320) in the expanded position. Electrical connection socket (100) after claim 1 , characterized in that the socket element (200) is formed in one piece by a forming process, in particular a stamping and bending process. Electrical connection socket (100) according to one of the preceding claims, characterized in that the contact elements (220) in a plug-side contact region (KB) of the socket element (200) protrude in regions into the receiving space (500). Electrical connection socket (100) according to one of the preceding claims, characterized in that the respective two leg walls (221, 222) of the contact elements (220) for clamping and contacting the plug-in part (400) are essentially concave-shaped or V-shaped or arc-shaped are to protrude into the receiving space (500). Electrical connection socket (100) according to one of the preceding claims, characterized in that the two contact elements (220) are arranged laterally spaced apart from a central axis (M) in the direction of extension (E) in such a way that their distance from one another is smaller than the thickness of the material to be inserted male part (400). Electrical connection socket (100) according to one of the preceding claims, characterized in that the socket element (200) is latched to the housing part (300) primarily by the latching lug (210) in the initial position of the contact elements (220). Electrical connection socket (100) according to one of the preceding claims, characterized in that the socket element (200) in the widened position of the contact elements (220) primarily by the latching lug (210) with the housing part (300) and secondarily with the second stop surface (320 ) can be locked. Electrical connection socket (100) according to one of the preceding claims, characterized in that the detent (210) for inserting the socket element (200) into the housing part (300) is ramp-shaped in the insertion direction (E). Electrical connection socket (100) according to one of the preceding claims, characterized in that the two second stop surfaces (320) are designed as complementary projections on the inner wall of the housing part (300).

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