DE102006025610A1 - Contact for a plug or a socket - Google Patents

Abstract

The The invention relates to a contact for a plug and / or a Socket, comprising a contact element (10) serving as a contact pin or contact socket is formed and for an electrical connection in a corresponding contact socket inserted or on a corresponding contact pin can be placed, and a connection element (11) with a connection area connected to an electrical conductor firmly or detachably connectable is, wherein the contact element (10) and the connection element (11) are formed as separate components and interconnected and the contact element (10) is a hollow body formed by deep-drawing. Preferably, the connection element (11) on a carrier tape (116) formed. The invention further relates to a process for the preparation a contact.

Description

The The invention relates to a contact for a plug and / or a Outlet, especially for one Plug and / or socket for trailer wiring.

contacts are formed as contact pins or contact sockets, and have a contact area to which an associated second contact can be contacted is by making a contact pin to make an electrical connection into an associated contact socket is plugged, and a connection area to which the contact with a conductor, such as a cable or a wire, connectable is on. It is known, the contact permanently, for example by soldering, or detachable, for example by a screw connection, to connect with the conductor. The contact is formed from a suitable material to ensure a good electrical To realize connection. A contact socket can be on its outside for one Be coated insulation. The contacts are for use in a plug or a socket in a contact holder can be arranged in a casing the plug or the socket inserted and / or in one piece with this is formed.

It is for example from the DT 26 51 108 A1 known to produce a contact pin of a metal sheet by punching and rolling, wherein the contact pin has an open gap extending over the axial length of the manufactured contact pin. Such a contact is easy to produce, but as a rule has only a low surface quality.

It is still known, contacts for Sockets or plugs for trailer wiring produce as turned parts. A production requires such contact but a big one Cost of materials and therefore is usually costly. moreover is an automated production of such contacts only conditionally possible.

It The object of the present invention is to create a contact which for a socket or plug suitable for trailer cabling is, has a high surface quality and easy to produce.

These Task is solved through a contact, for a plug and / or a socket, in particular for a Plug and / or a socket for a trailer wiring, comprising a contact element, which is shaped as a contact pin or contact socket is and for an electrical connection in a corresponding contact socket inserted or can be placed on a corresponding contact pin, and a connection element that is fixed with an electrical conductor or solvable is connectable, wherein the contact element and the connection element are formed as separate components and interconnected and the contact element is a hollow body formed by deep drawing.

By the multi-part shape of the contact, comprising at least one Contact element and a connection element, are for different areas the contact different materials and / or different Manufacturing process selectable, so that different requirements for each area berücksichtigbar are. In addition, you can various contact elements and connecting elements connected to each other become a big one Number of different variants of the contact at least to obtain partially identical elements.

By the production of the contact element by deep drawing can Material use opposite Forming the contact as a rotating part can be significantly reduced. Due to the achievable high surface quality, is it also possible store the contact exactly in a contact holder, with a bearing point can be safely sealed. For contact pins is thus a closed body given with a high surface finish, by the penetration of moisture into the connection area preventable. A production by thermoforming is further in the Usually faster and cheaper feasible than a production as a turned part.

In an embodiment the connecting element is formed as a punched / bent part. The connection element is inexpensive automated production. A connection area for one Head is in an advantageous embodiment with two clamping arms formed, which can be bent around the conductor. In other embodiments the connection area is soldered or otherwise connected to the conductor.

In a further embodiment the connection element is formed on a carrier tape. A variety At connecting elements is thereby produced inexpensively automated and with a corresponding number of contact elements on the carrier tape connectable. Through the carrier tape are the contacts thus present in a suitable manner for further processing prepared.

In a further embodiment, the connection element has a stop which is formed by bending, in particular by rolling, of the stamped / bent part. The stop is used in one embodiment as a stop in a latching of the contact in a contact holder. The stop acts according to an embodiment with a surface together on the contact element, wherein a contact can be inserted through a recess in a contact holder and is axially secured by the stop and the surface.

In a further embodiment the contact element and the connection element are connected by crimping. For the Crimp connection are in one embodiment in the contact element and / or the connection element crimping zones, for example as depressions, formed.

In a further embodiment the invention, the contact element has a substantially cylindrical Contact area and a connection area for connecting to the Connection element on. Sockets or plugs for connections between one Motor car and a trailer are for example, in accordance with ISO 7638-1, ISO 12098 and / or ISO 1185/3731 standardized. Such is for example according to ISO 7638-1 the length a contact area of a cylindrical contact pin set to 23.5 mm and the diameter to 4 mm. A design of the connection area and / or the connection area, however, is currently not through Standards and / or other standards. The connection area and / or the connection area thus be designed freely according to other requirements.

In a further embodiment the contact element is open at both ends. The contact element is formed as a contact socket.

In an embodiment the contact element is closed at one end. The contact element is formed, for example, as a contact pin, wherein the closed End, for example, hemispherical or conical is formed. In another embodiment, the contact element formed as a socket, wherein the closed end has a connection area for a Connecting element forms. When using a contact in a power outlet, which in the outdoor area a vehicle is mounted, such as a power outlet for temporary connection of the vehicle with a trailer, is a good seal of the connection area for connection to the electrical Ladders even without inserted plug desirable. By shaping the contact element as a deep-drawn part with high surface quality and at least A closed end can allow moisture to penetrate the contact in the connection area can be prevented.

In a further embodiment is an end of the contact element forming the connection area open and the connection element in the connection area for a connection used. The contact element can be a contact socket or a contact pin be formed.

In another embodiment is an end of the contact element forming the connection area closed and the Anschlussele ment on the connection area for one Connectable. The contact element is formed as a contact socket.

In Further development of the invention is the contact element as a contact socket with at least one indented Contact point formed. The depressed contact point is a electrical and / or mechanical connection of the contact socket to a corresponding contact pin can be improved. Contact points are preferably following a molding of the contact socket formed as a deep-drawn part.

In a further embodiment the contact element is formed as a contact socket for receiving a clamping sleeve. By arranged in the contact socket clamping sleeve a secure contact to a corresponding contact pin feasible. Due to the high surface quality of the deep-drawn part is a safe recording of the clamping sleeve possible.

In another embodiment is the contact element as a contact socket with at least one contact blade is formed. The contact blades are preferably at a Thermoforming process for forming the contact bush ausformbar. Besides However, it is also conceivable, the contact blades in retrospect form a contact socket.

It It is a further object of the invention to provide a process for the production to create a contact.

These Task is solved by a method of making a contact comprising the steps of: Deep drawing of the contact element; Punching the connection element; and Connecting the contact element and the connection element. The procedure is partially or fully automated feasible, with By the individual steps a high quality can be achieved.

In an embodiment Connecting elements are manufactured on a carrier tape. Through the carrier tape is an easy handling of the connection elements during the Production and an automated transfer possible.

In a further embodiment, the contact elements are connected to the connection elements on the carrier tape. The contacts thus produced are therefore further processed as conventional stamped and rolled contacts, but have ge compared to this a much higher quality.

In a further embodiment become the contacts on the carrier tape wrapped on a roll. The individual layers of the role will be there in one embodiment with interleaf paper or a similar one Covered material. In one embodiment, before one Winding up a quality control, for example, by video.

In a further embodiment be the contact element and the connection element by crimping connected. Crimping is also automated.

In a further embodiment For the production of the contact element, first blanks made of a material punched out, the punched round blanks deep-drawn and the deep-drawn parts on length milled. The steps are all automated.

In a further embodiment become the contact elements on a machine in various steps manufactured. By such a machine is a simple production possible.

Further Advantages of the invention will become apparent from the following description of exemplary embodiments of the invention shown in the drawings. For same or similar Components are used uniform reference numerals.

In show the drawings:

1 a schematic sectional view of a contact unit and a contact according to a first embodiment of the invention;

2 a schematic sectional view of the contact according to 1 ;

3 an enlarged view of a connection element according to 2 ;

4 a schematic perspective view of a contact according to a second embodiment of the invention;

5 a schematic sectional view of the contact according to 4 ;

6 a schematic perspective view of a contact according to a third embodiment of the invention;

7 a schematic sectional view of the contact according to 6 ;

8th a schematic perspective view of a contact according to a fourth embodiment of the invention;

9 a schematic sectional view of the contact according to 8th ;

10 a schematic perspective view of a contact according to a fifth embodiment of the invention;

11 a schematic sectional view of the contact according to 10 ;

12 a schematic perspective view of a contact according to a sixth embodiment of the invention;

13 a schematic sectional view of the contact according to 12 ;

14 a schematic perspective view of a contact according to a seventh embodiment of the invention;

15 a schematic sectional view of the contact according to 14 ;

16 a schematic perspective view of the contact according to 2 during production, and

17 a schematic representation of a tool for producing a contact element.

1 schematically shows a contact 1 with a contact element 10 and a connection element 11 which is in a contact unit 2 is stored. The contact unit 2 is receivable by a housing, not shown, wherein the illustrated contact unit 2 and the housing comply with ISO 7638-1, for a total of seven contacts 1 for the contact unit 2 are provided. For a better overview, however, the illustration is only one contact 1 shown. The illustrated contact unit 2 includes a contact holder 20 , a protective part 21 and a sealing cap 22 , On the illustrated contact holder 20 are locking elements 200 formed, in which the contact 1 is latched. For axial securing of the engaged contact 1 is on the connection element 11 an attack 112 formed, with the contact 1 through the stop 112 and one the connection element 11 facing end surface of the contact element 10 axially in the contact holder 20 is secured. A positioning of the contact 1 in the contact holder 20 is possible with high accuracy.

The contact 1 according to 1 is in detail in 2 cut and in 3 in perspective posed.

This in 1 - 3 illustrated contact element 10 has a contact area 100 and a connection area 101 on. The contact element 10 is a molded by thermoforming hollow body so that it has a good roundness and cylindricity with high surface quality. The contact element 10 is therefore perfectly fitting in the sealing cap 22 (S. 1 ), so that in the interior of the contact holder 20 lying connection element 11 through the sealing cap 22 is well sealed. The illustrated contact element 10 is as a contact pin with a closed end 102 molded, on which, for example, one in the 4 to 15 shown contact socket is placed. In the illustrated embodiment, the closed end is hemispherical. In modified embodiments, other forms of the closed end are realized.

The illustrated connection element 11 is formed as a punched / bent part, in particular the stop 112 is formed by rolling. The connection element 11 has Klemmarme 110 . 111 through which an unillustrated conductor with the contact 1 is connectable. The illustrated clamp arms 110 . 111 allow a good contact with a conductor, not shown. In modified embodiments, the clamping arms have other shapes and / or is only a pair of clamping arms or more than two pairs of clamping arms are provided. The size and / or shape of the clamping arms is suitably adaptable to a thickness of a conductor, not shown.

The contact element 10 and the connection element 11 are in the connection area 101 of the contact element connected to each other. In the illustrated embodiment, a connection is made by crimping, wherein the connecting element 11 for this purpose, a recess 113 in which the contact element 10 for a good connection.

4 and 5 show schematically a perspective view and a sectional view of a contact 3 according to a second embodiment of the invention. The contact 3 includes a contact element 30 and a connection element 11 , The connection element 11 is substantially the same as the terminal of the contact 1 according to 1 to 3 so that a detailed description is omitted. The contact element 30 is formed by deep drawing as a contact socket and has a contact area 300 and a connection area 301 on. The illustrated contact element 30 is both at one of the contact area 300 associated end 303 as well as at the connection area 301 associated end open, leaving the connecting element 11 in the connection area 301 can be used and connected to this by crimping. The contact socket 3 is for example through a contact holder 2 according to 1 receivable, with the stop 112 and one end of the connection area 301 ensure axial securing in the contact holder. In the contact socket 300 is a contact 1 according to 1 to 3 insertable, the connection between the contact 1 and the contact socket through contact points 302 is improved.

6 and 7 show schematically a perspective view and a sectional view of a third embodiment of a contact according to the invention 3 ' , The contact 3 ' comprises a formed by deep drawing contact element 30 ' and a connection element 11 ' , The contact element 30 ' has a contact area 300 and a connection area 301 ' on. The contact element 30 ' is formed as a contact socket and at the free end 303 open. The contact area 300 essentially corresponds to the contact area 300 the embodiment according to 4 and 5 with contact points 302 for improved contacting of a contact pin, not shown. The contact element 30 ' is further with a connection area 301 ' shaped, which has a closed end in the illustrated embodiment. The illustrated connection element 11 ' is a stamped / bent part. The connection element 11 ' has Klemmarme 110 . 111 for connection to a conductor, not shown. The connection element 11 ' is on with a crimp piece 114 formed by which it connects with the connection area 301 ' of the contact element 30 ' is connectable by crimping. A subarea 304 of the connection area 30 ' on which the crimping piece 114 does not rest, for example, as a receiving surface for locking into a contact holder 20 according to 1 be used, with stops for an axial securing by the crimping piece 114 and a shoulder on the contact element 30 ' are shaped.

8th and 9 show schematically a perspective view and a sectional view of a contact 4 according to a fourth embodiment of the invention. The contact 4 includes a contact element 40 and a connection element 11 , The connection element 11 is formed as a stamped / bent part and corresponds essentially to the already in relation to the in 1 to 5 described connection element. The contact element 40 is as a contact socket with an open end 403 for receiving a contact pin made by deep drawing. The connection to the connection element 11 is done by crimping, wherein the connecting element 11 in the illustrated embodiment in a connection area 401 of the contact element 40 is used. In a contact area 400 of the contact element 40 is a clamping sleeve 402 turned sets, through which the connection between the contact element 4 and one as a contact pin, for example according to 1 to 3 , molded contact is improved. In the illustrated embodiment, the contact area 400 a paragraph 405 on. This paragraph 405 is for receiving the illustrated clamping sleeve 402 advantageous. However, there are also embodiments without paragraph 405 conceivable.

10 and 11 show schematically a perspective view and a sectional view of a contact 4 ' according to a fifth embodiment of the invention. The contact 4 ' comprises a deep-drawn contact element 40 ' and a connecting element produced as a stamped / bent part 11 ' which essentially the connection element 11 ' according to the 6 and 11 equivalent. The contact element 40 ' has a contact area 400 with an open end 403 in which a clamping sleeve 402 is used. The contact area 400 and the clamping sleeve 402 are essentially the same as in 8th and 9 represented components. Through the contact area 400 is a contact pin according to 1 to 3 or a differently shaped contact pin receivable. The contact element 40 ' further has a connection area 401 ' through which it with a crimp piece 114 of the connection element 11 ' is connectable. The subarea 404 is as described above as an attack surface for locking with the contact holder 2 according to 1 available.

12 and 13 show schematically a perspective view and a sectional view of a contact 5 according to a sixth embodiment of the invention. The contact 5 includes a connection element 11 and a contact element 50 , The connection element 11 corresponds essentially to the connection element 11 according to 1 to 3 , so that is dispensed with a further description. The contact element 50 has a contact area 500 and a connection area 501 on. The connection area 501 is open, leaving the connecting element 11 can be used in the connection area and can be connected to these, for example by crimping. In this case, for example, the contact 5 between the connection area 501 and a stop 112 of the connection element 11 with the contact holder 2 according to 1 latched. The contact element 50 is formed as a contact socket, wherein a contact pin, for example, a contact pin according to 1 to 3 , about an open end 503 is insertable into the contact socket. At the contact element 50 are in the contact area 500 Multilams 502 molded, through which an unillustrated, inserted contact pin is safely preserved.

14 and 15 show schematically a perspective view and a sectional view of a contact 5 ' according to a seventh embodiment of the invention. The contact 5 ' comprises a formed as a deep-drawn part contact element 50 and a molded as a punched / bent part connecting element 11 ' , The connection element 11 ' corresponds essentially to the connection element already described with reference to the previous figures 11 ' , The contact element 50 ' has a contact area 500 and a connection area 501 ' on. The contact element 50 ' is formed as a contact socket and has an open end 503 on, by an unillustrated contact pin can be used. The connection area 501 ' is closed, with the crimping piece 114 of the connection element 11 ' on the closed connection area 501 ' is attachable and can be connected to this. In the illustrated embodiment, between the contact area 500 and the connection element 11 ' a subarea 504 formed, through which the contact shown 5 ' for example, with the contact holder 2 according to 1 is latched.

16 shows a schematic perspective view of the contact 1 according to 2 during production. The contact 1 includes a contact element 10 and a connection element 11 , which are manufactured as separate components and then connected to each other. The contact element 10 is made by deep drawing and has a connection area 101 on. The connection element 11 is formed as a stamped / bent part and includes clamping arms 110 . 111 for a ladder, not shown, a stop 112 to snap into an in 1 illustrated contact holder and an end 115 that in the connection area 101 plugged in and connectable with this. The connection element 11 is on a partially illustrated carrier tape 116 manufactured. On the carrier tape 116 is a variety of connection elements 11 or connecting elements with inserted contact elements 10 durable. The carrier tape 116 allows easy handling of the contact 1 for further processing.

The contact element 10 is made in one embodiment by first punching blanks from a suitable material. The blanks are then deep drawn and the deep-drawn parts are milled to length.

17 schematically shows a section of a tool 6 for producing a contact element. These are individual components of the tool 6 not shown for a better overview. The tool 6 includes lower transport gripper 61 and upper transport gripper 62 , which are arranged in the illustrated embodiment in two parallel rows. An unillustrated workpiece is by a lower transport gripper 61 received. At the upper transport grippers are drawing book sen 64 arranged so that by a movement of the transport gripper 61 and 62 a recorded workpiece is deep-drawn. At the lower transport grabs 61 are gear drives 63 arranged, through which the lower transport gripper 61 are rotatable about an axis. The transport gripper 61 The parallel rows perform in the illustrated embodiment, opposing rotational movements, so that workpieces not shown both rows are simultaneously transportable in a central region between the rows. From the center area, the workpieces can be removed from the tool. Because the upper transport gripper 62 are also rotatable in the illustrated embodiment, is a continuous operation of the tool 6 possible.

Claims (20)

Contact for a plug and / or socket, in particular a plug and / or a socket for a trailer wiring, comprising a contact element with a contact area, which is formed as a contact pin or contact socket and plugged for an electrical connection in a corresponding contact socket or on a corresponding contact pin can be placed, and a connection element with a connection region which is fixedly or detachably connectable to an electrical conductor, characterized in that the contact element ( 10 . 30 . 30 ' . 40 . 40 ' . 50 . 50 ' ) and the connecting element ( 11 . 11 ' ) are formed as separate components and connected to each other and the contact element ( 10 . 30 . 30 ' . 40 . 40 ' . 50 . 50 ' ) is a hollow body formed by deep drawing. Contact according to claim 1, characterized in that the connecting element ( 11 . 11 ' ) is formed as a punched / bent part. Contact according to claim 2, characterized in that the connection element ( 11 . 11 ' ) on a carrier tape ( 116 ) is formed. Contact according to claim 1, 2 or 3, characterized in that the connecting element ( 11 ) a stop ( 112 ), which is formed by bending, in particular by rolling, the stamped / bent part. Contact according to one of claims 1 to 4, characterized in that the contact element ( 10 . 30 . 30 ' . 40 . 40 ' . 50 . 50 ' ) and the connecting element ( 11 . 11 ' ) are connected by crimping. Contact according to one of claims 1 to 5, characterized in that the contact element ( 10 . 30 . 30 ' . 40 . 40 ' . 50 . 50 ' ) has a substantially cylindrical contact area ( 100 . 300 . 400 . 500 ) and a connection area ( 101 . 301 . 301 ' . 401 . 401 ' . 501 . 501 ' ) for connecting to the connecting element ( 11 . 11 ' ) having. Contact according to one of claims 1 to 6, characterized in that the contact element ( 10 . 30 ' . 40 ' . 50 ' ) is closed at one end. Contact according to one of claims 1 to 6, characterized in that the contact element ( 30 . 40 . 50 ) is open at both ends. Contact according to claim 6, characterized in that a connection area ( 101 . 301 . 401 . 501 ) forming end of the contact element ( 10 . 30 . 40 . 50 ) open and the connection element ( 11 ) in the connection area ( 10 . 30 . 40 . 50 ) can be used for a mechanical and electrical connection. Contact according to claim 6, characterized in that a connection area ( 301 ' . 401 ' . 501 ' ) forming end of the contact element ( 30 ' . 40 ' . 50 ' ) is closed, and the connecting element ( 11 ' ) on the connection area ( 301 ' . 401 ' . 501 ' ) Can be placed for a connection. Contact according to one of claims 1 to 10, characterized in that the contact element ( 30 . 30 ' ) as a contact socket with at least one depressed contact point ( 302 ) is formed. Contact according to one of claims 1 to 10, characterized in that the contact element ( 40 . 40 ' ) as a contact socket for receiving a clamping sleeve ( 402 ) is formed. Contact according to one of claims 1 to 10, characterized in that the contact element ( 50 . 50 ' ) as a contact socket with at least one contact blade ( 502 ) is formed. A method of making a contact, comprising the steps of: a. Deep drawing of the contact element ( 10 . 30 . 30 ' . 40 . 40 ' . 50 . 50 ' ); b. Punching the connection element ( 11 . 11 ' ); and c. Connecting the contact element ( 10 . 30 . 30 ' . 40 . 40 ' . 50 . 50 ' ) and the connection element ( 11 . 11 ' ). A method according to claim 14, characterized in that a plurality of connection elements ( 11 . 11 ' ) on a carrier tape ( 116 ) are manufactured. Method according to claim 15, characterized in that contact elements ( 10 . 30 . 30 ' . 40 . 40 ' . 50 . 50 ' ) with the connecting elements ( 11 . 11 ' ) on the carrier tape ( 116 ) get connected. A method according to claim 16, characterized ge indicates that the contacts ( 1 . 3 . 3 ' . 4 . 4 ' . 5 . 5 ' ) on the carrier tape ( 116 ) are wound on a roll. Method according to one of claims 14 to 17, characterized in that the contact element ( 10 . 30 . 30 ' . 40 . 40 ' . 50 . 50 ' ) and the connection element ( 11 . 11 ' ) are connected by crimping. Method according to one of claims 14 to 18, characterized that for the production of the contact element first round blank made of a material be punched out, the rounds deep-drawn and the deep-drawn Parts on length be milled. Method according to claim 19, characterized that the contact elements on a machine in different steps be made.