DE102011089548A1 - Contact protection arrangement for use in electrical plug connector of high current device, has protection element positively coupled with plug pin to prevent movement of protection element relative to plug pin toward longitudinal axis - Google Patents

Abstract

The arrangement (18) has a plug pin (16) extending toward a longitudinal axis (L). The plug pin has a transverse recess i.e. continuous recess, extending transverse to the longitudinal axis. A contact protection element (20) comprises a pin element (26) extending transverse to the longitudinal axis such that the pin element is partially arranged in the transverse recess. The protection element is made of polybutylene terephthalate and glass fibers and positively coupled with the plug pin to prevent movement of the protection element relative to the plug pin toward the longitudinal axis.

Description

The invention relates to a Berührschutzanordnung, with a connector pin and a Berührschutzelement which is coupled to the connector pin.

Plug pins are used in electrical connectors for transmitting electrical currents, in particular for use in high current devices. In electrical connectors, the pin can be arranged in particular in a housing of the connector that this can be touched by a user of the connector. However, such contact should be avoided, in particular if an electrical voltage is applied to the plug pin.

The object of the invention is to provide a Berührschutzanordnung, which provides a permanently reliable protection against contact of the connector pin, especially under load with high currents or high electrical voltages.

The object is solved by the features of the independent claims. Advantageous developments of the invention are characterized in the subclaims.

The invention is characterized by a Berührschutzanordnung, with a extending in the direction of a longitudinal axis of the connector pin, and a Berührschutzelement which is coupled to the connector pin. The plug pin has at least one transverse recess extending transversely to the longitudinal axis, and the contact protection element has at least one pin element extending transversely to the longitudinal axis, which is designed and arranged at least partially in the at least one transverse recess such that the contact protection element is positively coupled to the plug pin in that movement of the contact protection element relative to the plug pin in the direction of the longitudinal axis is prevented.

This has the advantage that the Berührschutzelement can be captively coupled to the connector pin. In particular, even with small cross-sections of the connector pin and / or a rectangular shape of the connector pin, a secure coupling between the contact protection element and the connector pin can be achieved.

In an advantageous embodiment, the transverse recess is formed in the connector pin as a continuous recess. This has the advantage that a simple mounting of Berührschutzelements on the pin is possible. Furthermore, the transverse recess can be easily manufactured. Furthermore, the production of the transverse recess can be made particularly cost-effective.

In a further advantageous embodiment, the plug pin has at least one chamfer surface on an end face, and the contact protection element has at least one chamfer surface. The at least one chamfer surface of the connector pin bears against the at least one chamfer surface of the contact protection element. This has the advantage that continuous transitions of the connector pin and the Berührschutzelements are possible. This allows a high mechanical stability of the connector pin and the Berührschutzelement can be achieved. Furthermore, a simple mounting of Berührschutzelements on the pin is possible. In a further advantageous embodiment, the Berührschutzelement is formed of a material having polybutylene terephthalate. This has the advantage that the Berührschutzelement can be designed high temperature resistant and high voltage resistant.

In a further advantageous embodiment, the Berührschutzelement is formed of a material having glass fibers. This has the advantage that the contact protection element can have a high mechanical stability and a high temperature stability.

Embodiments of the invention are explained below with reference to the schematic drawings. Show it:

1 a perspective view of an electrical connector,

2 a perspective view of a Berührschutzanordnung,

3 a perspective view of a pin, and

4 another perspective view of Berührschutzanordnung.

Elements of the same construction or function are provided across the figures with the same reference numerals.

1 shows a perspective view of an electrical connector 10 , The electrical connector 10 has a housing 12 , The housing 12 has a housing recess 14 on. In the embodiment shown here, the electrical connector 10 a rectangular cross-section. In further embodiments, the electrical connector 10 but also have other cross-sectional shapes.

The electrical connector 10 has further a pin 16 with a longitudinal axis L. The pin 16 is preferably in the housing recess 14 of the housing 12 arranged. In the embodiment shown here, the pin has 16 a rectangular cross-section. In further embodiments, the connector pin 16 but also have other cross-sectional shapes. The pin 16 can accommodate a counter element, which is not shown here. Such a counter element may be formed, for example, as a socket element.

The electrical connector 10 has a shock protection arrangement 18 , The contact protection arrangement 18 includes the extending in the direction of the longitudinal axis L pin 16 and a contact protection element 20 , The contact protection element 20 is with the pin 16 coupled.

The pin 16 has in the embodiment shown here two transversely to the longitudinal axis L extending transverse recesses 22 (please refer 3 ). In further embodiments, the connector pin 16 also one or more than two transverse recesses 22 exhibit. The transverse recesses 22 are formed as a continuous recesses. These can be made particularly simple and inexpensive, for example by punching.

The pin 16 has two more slots 24 connecting the transverse recesses 22 with a front side 28 of the connector pin 16 enable.

The contact protection element 20 has in the embodiment shown here two extending transversely to the longitudinal axis L pin elements 26 , The pin elements 26 have a substantially same cross-section as the transverse recesses 22 , and are in the transverse holes 22 arranged. This is the pen elements 26 positive fit with the pin 16 coupled. This is also the Berührschutzelement 20 positive fit with the pin 16 coupled. This allows the contact protection element 20 captive in the connector pin 16 is arranged, and a movement of the Berührschutzelements 20 opposite the pin 16 in the direction of the longitudinal axis L is prevented.

The slots 24 In particular, therefore, are provided so that the Berührschutzelement 20 can be formed so that the pin elements 26 achieve a high mechanical stability.

At one end 28 of the connector pin 16 are chamfered surfaces 30 educated. The contact protection element 20 also has chamfer surfaces 32 on, at the corresponding chamfer surfaces 30 of the connector pin 16 issue. The chamfer surfaces 30 of the connector pin 16 and the corresponding associated chamfer surfaces 32 the contact protection element 20 allow the contact protection element 20 in a particularly simple way with the pin 16 can be coupled.

The touch protection element is used for mounting 20 preferably opposite the pin 16 shifted in one direction R (see 4 ), and so the contact protection element 20 to the pin 16 pressed until an end stop is reached. The end stop is in each case by the chamfer surfaces 30 of the connector pin 16 and the chamfer surfaces 32 the contact protection element 20 established. Such an assembly of Berührschutzelements 20 on the pin 16 is particularly advantageous because it is automatable.

The contact protection element 20 is preferably formed of a material comprising polybutylene terephthalate. Polybutylene terephthalate is particularly high temperature and high voltage resistant.

The material from which the contact protection element 20 is formed, further preferably comprises a glass fiber material. This can be a high mechanical strength of Berührschutzelements 20 be achieved.

An advantage of the illustrated contact protection arrangement 18 is in particular that with this at a concern of an electrical voltage to the pin 16 the risk of electric shock can be prevented, especially if the counter element is not connected to the pin 16 is plugged. This can be the electrical connector 10 operated and delivered without additional protective covers.

Another advantage of the illustrated Berührschutzanordnung 18 in particular, is that the electrical connector 10 with the pin 16 generally claimed a very small amount of space. By the illustrated Berührschutzanordnung 18 can be a great freedom in the construction of the electrical connector 10 be achieved.

LIST OF REFERENCE NUMBERS

10

 Electrical connector

12

 casing

14

 housing recess

16

 pin

18

 Berührschutzanordnung

20

 Berührschutzelement

22

 transverse recess

24

 slot

26

 pin element

28

Front side of 16

30

Bevel surface of 16

32

Bevel surface of 20

L

 longitudinal axis

R

direction

Claims (5)

Contact protection arrangement ( 18 ), with - in the direction of a longitudinal axis (L) extending pin ( 16 ), and - a contact protection element ( 20 ), which with the pin ( 16 ), wherein - the pin ( 16 ) at least one transversely extending to the longitudinal axis (L) transverse recess ( 22 ), and - the contact protection element ( 20 ) at least one transverse to the longitudinal axis (L) extending pin element ( 26 ) formed in such a way and at least partially in the at least one transverse recess ( 22 ) is arranged, that the contact protection element ( 20 ) with the connector pin ( 16 ) is coupled, so that a movement of the Berührschutzelements ( 20 ) relative to the pin ( 16 ) is prevented in the direction of the longitudinal axis (L). Contact protection arrangement ( 18 ) according to claim 1, wherein the transverse recess ( 22 ) in the connector pin ( 16 ) is formed as a continuous recess. Contact protection arrangement ( 18 ) according to claim 1 or 2, wherein the plug pin ( 16 ) on a front side ( 28 ) at least one chamfer surface ( 30 ), and the contact protection element ( 20 ) at least one chamfer surface ( 32 ), and the at least one chamfer surface ( 30 ) of the connector pin ( 16 ) at the at least one chamfer surface ( 32 ) of the contact protection element ( 20 ) is present. Contact protection arrangement ( 18 ) according to one of the preceding claims, wherein the contact protection element ( 20 ) is formed of a material comprising polybutylene terephthalate. Contact protection arrangement ( 18 ) according to one of the preceding claims, wherein the contact protection element ( 20 ) is formed of a material having glass fibers.

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