DE102009005725B3 - Touch protection device for a connector pin - Google Patents

Abstract

The invention relates to a Berührschutzvorrichtung for receiving an electrical connector pins, comprising a symmetrical top plate with a arranged in the center of the top plate symmetrical opening, and connected to the top plate, flexible, compressible protective jacket, which forms a receiving space for the connector pin, wherein the flexible protective sheath the pressing on the top plate can be actuated from its initial state flexibly and reversibly into a compressible end state.

Description

The The invention relates to a contact protection device for one Connector pin according to the preamble of Claim 1.

The The invention therefore relates to a contact protection device for a Plug pin, in particular a pin or a socket an electrical connector, which are accessible to touch.

in the State of the art regularly dips the problem on that with electrical plugs, especially with single-pole electrical connectors, the problem arises that the pin or the socket (plug pin) arranged in the connector housing are so that they are touchable with a finger. This can if so the connector pin under an electrical load, for example one electric voltage is at risk of impairment and health Lead life. To this dangerous conditions To avoid, there are different solutions in the art.

A usual procedure around a pin against contact to protect, is the application of an insulating head at the end of the connector pin, so that not the plug pin itself is touchable, but only the electrically insulating section, which at the end of the connector pin was attached.

A alternative and conceivable simple solution is the extension the housing wall so far, a finger with usual finger length can not dive so deep into the connector that the end the connector pin remains accessible.

This has the disadvantage that such connectors either expensive to manufacture are or a big one Require space. In some cases, concrete connectors are required that have a unimportant space and thus for the purpose of contact protection the above measures are not suitable. About that In addition, the application of an insulating head on the end the plug partly with other problems.

On the one hand Not every connector already on the market offers one Such mounting point for securing such a contact protection device and, on the other hand, when you remove the mating connector, you may that the insulating head, so the shock protection device from the connector pin accidentally demolished or separated and thus a dangerous State is brought about. The variety of different contact pins is a problem.

The US 2,755,449 deals with an electrical connector which has improved insulation to prevent the connector from inadvertent short circuiting, with the entire length of the connector being surrounded by a flexible sleeve that can be reversibly compressed as the connector and mating connector mate , This shell also represents a form of contact protection.

In the US 3,683,315 discloses an electrical cable connector having an electrically insulating housing and an electrical contact therein, which is surrounded by a shielding sleeve around the contact around. The shielding sleeve is arranged compressible along the plug axis and protects at least in a certain area the plug against accidental contact.

The DE 600 11 654 T2 discloses a male connector for wet environment, in particular an underwater connector having a protective sheath surrounding the connector, the sheath being secured by a first end secured to the front end portion and a rear end secured to the rear end of the male connector; has, wherein the sheaths have coaxial longitudinal axes and are formed of a material, although kinked in the longitudinal direction but are designed to be radially resilient, whereby this can be pushed together reversibly in the radial direction when mating the connector pairs.

The revelation WO 2006/133824 A1 also deals with an insulating environment of an electrical connection part, in this case an electrical connection part for connecting a jumper cable. This disclosure teaches to form an insulating cover in a tubular manner and to arrange it around a central axis of the connecting part so as to be movable around it.

The movable insulating cover protects so against unwanted electrical contacts. The insulating cover is preferably as one-piece Tube or one-piece Hose mechanically stable and exists in particular from a low-cost, electrically insulating plastic, for example from a rubber grommet.

to Prevention of the aforementioned disadvantages is the subject of the present invention with the object, an improved contact protection device for a connector pin to provide, which is also already in the market Connector systems without contact protection device can be installed.

Of the The present invention is therefore based on the additional object, a touch guard universal type.

outgoing from the cited prior art is therefore the additional Task therein, a Berührschutzvorrichtung universal type, which moves only as intended can be and over should have a double Berührschutzeffekt.

The Therefore, the present invention makes use of a double Berührschutzeffekt. On the one hand will be a similar, as known from the prior art contact protection device on the end applied to the connector pin. On the other hand, a second becomes universal attachable to the connector pin, inventive Berührschutzvorrichtung to the entire plug pin around (in the electrically conductive area) arranged.

According to the invention is a touch guard from a flexible protective sheath, preferably a folding beam, so with a holding and connecting portion on the pin or attached to the plug pin, that a head plate of the contact protection device, which represents the end of the flexible protective jacket, with its opening along of the connector pin, so that the mating connector plugged into the connector pin of said connector can be.

As a result, that the flexible protective sheath is symmetrical and therefore symmetrical Spring forces around the substantially symmetrical connector pin is arranged around and also the top plate is constructed symmetrically and meanwhile center the said opening for the Connector pin is arranged leaves the shock protection device move only as intended, if the mating connector bestimmungemäß on the connector pin, ie is pushed symmetrically to its thru-axle and in the other activity operated the flexible protective sheath of the shock protection device.

at every operation by a finger and thus due to an uncontrollable contact of the top plate the shock protection device by means of the finger, which is not symmetrical to the thru axle, which is forcibly always the case, since above the Berührschutzvorrichtung the insulating cap is and thus touching in the symmetry and Thrust axle of the top plate is prevented, thus leaves the top plate just so touch that it always carries out an asymmetrical movement. This means that when you touch the top plate with your finger, you touch she forced only one-sided, which by design a produces asymmetrical state and tilted the top plate, thereby let yourself but the flexible protective sheath of the shock protection device and the Do not press the entire headstock, but lock it either in one for it provided groove or this remains intended hold on the outer jacket of the connector pins.

The Touch protection device according to the invention has thus over two operable states. One proper condition, which by proper contact and with it symmetrical touch takes place with the mating connector (whereby the shock protection device press) and a safety condition, which is an actuation of the contact protection device prevented (by tilting the symmetrically constructed contact protection device).

The The aforementioned object is thus with the features of the claim 1 solved.

advantageous Further developments of the invention are specified in the subclaims.

Further Advantages and expedient embodiments are from the further claims, the figure description and the drawings. Show it:

1 an exemplary view of a partition passage with an inserted pin (without shock protection device);

2 a sectional view through a first embodiment of a Berührschutzvorrichtung invention with a connector pin.

The 1 shows a partition passage, thus an electrical connector, in which a connector pin 1 in a housing 2 is arranged for the transmission of electrical energy. The connector pin 1 is touchable at both ends.

Like from the 1 to take out, has the housing 2 two housing openings into which can be immersed with a finger and thus the connector pin 1 can come in electrically touchable contact with the finger.

The 2 shows a detail of one end of a connector pin 1 at the plug-side end of an insulating cap 4 with a circumferential groove 5 is applied. The connector pin 1 is designed as a substantially symmetrical cylindrical pin shaped pin 1 shown. At the plug-in end of the plug pin 1 there is the aforementioned insulating cap 4 having substantially the same outer diameter as the male pin 1 features. The insulating cap 4 has guide sections 7 , at the same time the lateral surface (outer wall) of the insulating cap 4 forms. The thru-axle S is through the Center axis of the connector pin 1 , which at the same time central axis of the insulating cap 4 is formed. The connector pin 1 is in a housing 2 arranged of electrically insulating material, which has a housing wall 3 in the 2 is shown only by way of example. The housing wall 2 In the case of essentials, this extends approximately to the height of the electrically conductive end of the connector pin 1 or something beyond that. The insulating cap 4 Optionally, completely within the housing 2 be arranged or over the housing wall 3 protrude. The insulating cap 4 prevents direct touching of the plug pin end 1 , However, it may be that the distance between the housing wall 3 and the outer jacket 6 of the connector pin 1 Enough is that one with a finger on the insulating cap 4 could reach past and thus could get into the space between pin and housing wall. For this, as in 2 can be seen, a Berührschutzvorrichtung 20 arranged.

The shock protection device 20 includes a top plate 21 made of insulating material with an opening in its center 22 is provided, which is substantially the outer diameter of the connector pin 1 equivalent. The opening has the same geometry as the outer geometry of the connector pin. In the embodiment shown here is therefore a circular opening, so a hole whose diameter is the outer diameter of the connector pin 1 roughly equivalent. On the outer circumference, so the outer section 26 the top plate 21 , becomes a flexible protective jacket surrounding the connector pin 23 arranged, which preferably has resilient properties.

With Advantageous, a resilient, compressible folding beam is used for this purpose.

The bellows is circumferentially on the outer section 26 , so to speak ring-shaped, with the top plate 21 connected. At the opposite end, so at the bottom in the 2 is the flexible protective jacket 23 (Bellows) with a holding section 25 on a connecting means 24 mechanically connected to the housing or alternatively with the inserted connector pin. This can be done with advantage by simple clamping connection, creating a Berührschutzvorrichtung 20 according to the present invention can also be incorporated in already installed connector with the same existing task to a manufacture of a contact protection device.

The 2 shows the state in which a corresponding mating connector in the direction S, so the axial direction of insertion of the connector pin can be brought into electrical connection with this, thus the intended initial state.

Not shown is the state in which the mating connector has been engaged with the plug. It shifts the in 2 shown, in starting position, bellows 23 with his head plate 21 in the direction of the housing bottom and thus in the direction of the holding sections 25 ,

However, if you touch outside the thru axle, the top plate 21 with a finger or object, this tilted by an angle α from the vertical to the thru-axle S and tilts in the groove 5 and / or on the outer jacket 6 of the connector pin 1 , Unintentional operation is therefore excluded.

As a result of the construction would theoretically symmetrical operation with the fingers or an object only in the center, so in the opening 22 the top plate 21 in question, but in the insulating cap 4 is arranged and thus a central actuation of the top plate 21 thus prevented. As a result, it is concretely ensured that the electrically conductive outer sheath is accidentally touched or actuated with the finger 6 of the connector pin is exposed.

alternative Training with the same mode of action are also among the Inventive idea.

1

electrical pin

2

casing

3

housing wall

4

insulating

5

groove

6

outer sheath of the connector pin

7

guide sections

20

touch guard

21

headstock

22

opening

23

flexible mantle

24

connecting means

25

holding portions

26

outer portion

27

operating axis

Claims (4)

Electric pin ( 1 ) with a contact protection device ( 20 ), which a rotationally symmetrical head plate ( 21 ) with a concentric opening ( 22 ), and one with the top plate ( 21 ), flexible, compressible rotationally symmetrical protective jacket ( 23 ), which has a receiving space for the plug pin ( 1 ), wherein the flexible protective sheath ( 23 ) by pressing on the top plate ( 21 ) Operable from its initial state flexible and reversible in egg NEN compressible final state is feasible and where both the top plate ( 21 ) as well as the protective coat ( 23 ) substantially rotationally symmetrical about an actuating axis ( 27 ) of the contact protection device ( 20 ) are formed and the actuating axis ( 27 ) substantially with the plug-in direction S of the plug pin ( 1 ) is identical and wherein at the plug-side end of the connector pin ( 1 ) an insulating cap ( 4 ) is arranged, which via an annular circumferential groove ( 5 ). Electric pin ( 1 ) according to claim 1, wherein the flexible protective jacket ( 23 ) via at least one holding section ( 25 ) and at least one with the holding section ( 25 ) connecting means ( 24 ), for connection to a connector pin ( 1 ). Electric pin ( 1 ) according to claim 1 or 2, wherein the flexible protective sheath ( 23 ) is a resilient bellows. Electric pin ( 1 ) according to claim 1, 2 or 3, wherein the annular groove ( 5 ) in the region of the opening ( 22 ) of the head plate ( 21 ) is located.