DE202010016711U1 - Connecting device with Ferring for contact force generation - Google Patents

Abstract

Electrical connection device (10), which is provided for connecting an electrical conductor (4) to an electrical assembly, the connection device (10) comprising a relief spring ring (3) which, in the assembled state, is arranged concentrically around the electrical conductor (4) and causes a strain relief of the electrical conductor (4), characterized in that the connecting device (10) comprises a pin contact (11) and a further contact spring ring (2), which is also arranged concentrically around the conductor in the assembled state and, in particular under tensile load of the electrical conductor (4), a contact force (F) is generated on the pin contact (11).

Description

The invention relates to an electrical connection device which is provided for connecting an electrical conductor to an electrical assembly, wherein the connection device comprises a relief spring ring, which is arranged concentrically around the electrical conductor in the assembled state and causes a strain relief of the electrical conductor.

For electrical connection devices for connecting electrical conductors to a plug or electrical equipment high demands are made in terms of tensile strength of the connected electrical conductors and the protection of the electrical contacts against dust and moisture.

The publication DE 1 196 745 shows, for example, such a connection device for connecting an electrical conductor to an electrical device. In this connection device, an electrical conductor is inserted through an insertion nozzle in an electrical device, wherein a locking disc causes a strain relief and a voltage applied to the locking disc sealing disc ensures protection against moisture.

The object of the invention is to provide a connection device of the above type, which is provided for connecting an electrical conductor to a pin contact of the connection device, and on the one hand ensures a secure contact between the electrical conductor and the pin contact, even under tensile load, and On the other hand ensures a very good dust and moisture protection. Another object of the invention is that the connection device is very easy to install.

The object is achieved with an electrical connection device which is provided for connecting an electrical conductor to an electrical assembly, wherein the connection device comprises a relief spring ring which is arranged concentrically around the electrical conductor in the mounted state and causes a strain relief of the electrical conductor, wherein the Connecting device comprises a pin contact and another contact spring ring, which is also arranged concentrically around the conductor in the assembled state and, in particular under tensile load of the electrical conductor, generates a contact force on the pin contact.

When mounted, the electrical conductor is connected to the pin contact. In this case, the contact force preferably comprises at least one component which acts in the radial direction on the electrical conductor. It is particularly preferred that the contact spring ring is provided in the assembled state in the region of the pin contact, so that this component acts on the pin contact. Due to the contact force generated by the contact spring ring and acting on the pin contact the electrical conductor is pressed in the assembled state to the pin contact, so that an electrical contact between the electrical conductor and the pin contact is ensured.

In a preferred embodiment, the relief spring ring and the contact spring ring are provided spaced apart in the mounted state. For this, the electrical connection device preferably comprises a spacer, which is arranged in the assembled state between the contact spring ring and the relief spring ring. Particularly preferably, the spacer in the assembled state is provided concentrically around the electrical conductor. Most preferably, it is cylindrical and therefore very easy and inexpensive to produce.

It is further preferred to provide a seal between the relief spring ring and the contact spring ring. The seal is particularly preferred both on the relief spring ring and on the contact spring ring. Further preferably, it concentrically surrounds the electrical conductor. It is preferable that it is provided between the electrical conductor and the spacer. In this arrangement, it ensures together with the distance protection a very good dust and moisture protection.

In a preferred embodiment, the electrical connection device comprises a conductor connection housing and a contact connection housing.

The conductor connection housing preferably has a passage for passing through the electrical conductor. It is particularly preferably cylindrical, so that it is simple and inexpensive to produce.

The contact spring ring and the relief spring ring are preferably arranged in the assembled state in the contact connection housing, in particular in a receiving space of the contact connection housing. Further preferably, the pin contact is provided in the contact connection housing, and particularly preferably arranged on an electrical contact part. In this case, the electrical contact part is preferably designed as a plug contact part or as a socket contact part, so that a corresponding socket or plug contact part can be connected to the electrical contact part.

For this, the contact connection housing also preferably has a bushing which is intended for Recording the electrical contact part is provided. In this case, the contact connection housing is preferably provided concentrically around the electrical conductor and / or the electrical contact part. It is particularly preferably provided at least in sections cylindrical, so that it is easy and inexpensive to produce.

In the mounted state, the electrical conductor is preferably guided in an insertion direction through the conductor connection housing into the contact connection housing. In this case, the electrical conductor is preferably passed after passing through the conductor connection housing first through the relief spring ring, then through the spacer, then through the seal, and then through the contact spring ring, and finally plugged onto the pin contact. For mounting the electrical connection device, the electrical conductor is therefore preferably passed only through the aforementioned components of the electrical connection device and attached to the pin contact. It is also preferred that the pin contact has a thread or is thread-like, so that the electrical conductor is turned up by a rotary movement on the pin contact. Such assembly is very easy and quick to carry out.

The conductor connection housing can preferably be arranged reversibly on the contact connection housing. For this purpose, it preferably has a thread and the contact connection housing has a corresponding mating thread. It is preferable to provide the female terminal contact terminal housing and the male terminal lead terminal housing which are rotatable with each other, or vice versa. For connecting the conductor connection housing to the contact connection housing, however, other connection techniques are also preferred, for example a connection by means of snap connectors.

In the assembled state, the relief spring ring is preferably arranged in the insertion direction in front of the contact spring ring. Due to the strain relief by the relief spring ring, the tensile load of the conductor is reduced to the contact spring ring.

It is preferred that the electrical conductor comprises a, in particular electrically insulating, sheath and an electrically conductive core. It is particularly preferred that an opening formed between the springs of the contact spring ring or the discharge spring ring is smaller than the outer diameter of the electrical conductor. Furthermore, the contact spring ring and the relief spring ring preferably have both springs for connecting electrical conductors with a small conductor cross section and springs for connecting electrical conductors with a large conductor cross section, so that they can be used in each case for conductors of different conductor cross sections.

Preferably, the springs of the contact spring ring and the relief spring ring are thereby bent during insertion of the electrical conductor in the insertion direction, so that they rest in a contact region on the electrical conductor, in particular on the sheathing of the electrical conductor. The springs are preferably resilient, so that they are against a restoring force, which forms the contact force, bent. Therefore, the springs, in particular under tensile load of the electrical conductor, that is, under load of the conductor against the insertion direction of the conductor, pressed onto the sheath.

In order to increase the contact force, in particular under tensile load, it is also preferred that the springs of the contact spring ring and the relief spring ring are already bent, at least slightly, in the insertion direction before installation.

In a particularly preferred embodiment, the contact spring ring and the relief spring ring are provided identical. As a result, there is no possibility of confusion when mounting the electrical connection device and storage is easy.

It is further preferred that the contact spring ring and the relief spring ring have a Verdrehschutzmittel which cooperate with anti-rotation countermeasures of the contact terminal housing together and prevent rotation of the spring rings. The anti-rotation means is formed for example as Anformung or web, wherein the anti-rotation antidote is formed, for example, as a corresponding recess or groove. Since the springs of the spring rings are pressed in the mounted state, in particular under tensile load on the sheath of the electrical conductor, the anti-rotation prevents the shroud during assembly or in the assembled state, especially during handling of the electrical conductor or due to a vibration load through the springs will be damaged.

In addition, it is preferable to provide a sealing ring as additional dust and moisture protection provided between the contact terminal housing and the conductor terminal housing. The provided by the seal and the spacer seal and the sealing ring prevent the ingress of dust and moisture into the receiving space of the contact terminal housing, so that the pin contact is protected.

The invention will be explained in more detail below with reference to the drawings with reference to embodiments, wherein further advantages of the invention will become apparent.

It shows:

1 a first perspective view of a connecting device according to the invention in an exploded view,

2 one in a spring washer of the connecting device of 1 inserted electrical conductor,

3 an arrangement of a in a contact spring ring and a discharge spring ring of the connecting device of 1 introduced and connected to a insulation displacement contact conductor, in 3 (a) in a side view and in 3 (b) in a sectional view CC the 3 (a) .

4 the arrangement of 3 in a perspective view, wherein between the contact spring ring and the relief spring ring, a sealing ring is arranged,

5 a second perspective view of the connecting device of 1 in an exploded view,

6 in 6 (a) a side view of the connecting device of 1 and in 6 (b) a sectional view of the AA 6 (a) .

7 a perspective view of a contact terminal housing of the connection device of 1 with a connected conductor, wherein the conductor connection housing facing side of the contact terminal housing is shown, and

8th a further perspective view of the connecting device of 1 ,

The 1 - 8th show a connection device according to the invention.

The electrical connection device 10 is intended for connection to an electrical module. An electrical assembly according to the invention is both an electrical conductor or a single electrical component as well as an electrical circuit or an electrical device.

It has a contact connection housing 6 and a conductor connection housing 5 on.

The conductor connection housing 5 is cylindrical and has a passage 55 (S. 5 ), through which an electrical conductor 4 is feasible.

The contact connection housing 6 has a recording room 66 (S. 7 ) in which a pin contact 11 is arranged. The pin contact 11 is on an electrical contact part 1 arranged that is designed here as a plug contact part (s. 6 (b) ), so that a female contact part (not shown) corresponding to the male contact part contacts the contact terminal housing 6 is pluggable. To the electrical contact part 1 to lead to the outside, has the contact terminal housing 6 also an implementation 65 (S. 5 ), in which the electrical contact part 1 is arranged. The contact connection housing 6 is here therefore at least partially cylindrical.

The contact connection housing 6 and the conductor connection housing 5 are in an assembled state (s. 6 . 8th ) are interconnected by means of a screw connection. In the present embodiment, the contact terminal housing 6 for an internal thread 64 (S. 7 ) and the conductor connection housing 5 an external thread 54 on, which are provided corresponding to each other, so that they are rotatable into each other.

In principle, an embodiment is possible on the contact connection housing 6 an external thread 64 and at the conductor connection housing 5 an internal thread 54 provides. However, the embodiment shown here has the advantage that the contact terminal housing 6 facing the end 51 of the conductor connection housing 5 as a stop for those in the recording room 66 arranged components (see below), so that these in the assembled state of the connecting device 10 in the recording room 66 are arranged immovable and thus fixed.

The connection device 10 further includes a relief spring ring 3 and a contact spring ring 2 , which are provided here identical. The spring washers 2 . 3 are in the assembled state of the connection device 10 by means of a spacer ring 7 in the assembled state concentrically around the electrical conductor 4 is arranged, provided spaced from each other. They have evenly radially distributed in the circumferential direction springs 21 . 22 . 31 . 32 of varying length, leaving the springs 21 . 22 . 31 . 32 partially provided for small and partially for large conductor cross-sections. Besides, the springs are 21 . 22 . 31 . 32 in an insertion direction 43 of the leader 4 in the connection device 10 at least slightly bent.

Between the relief spring ring 3 and the contact spring ring 2 is also a seal 8th provided in the assembled state of the connection device 10 also concentric around the electrical conductor 4 and between this and the spacer 7 is arranged. The seal 8th lies in the mounted state on the relief spring ring 3 and on the contact spring ring 2 and ensures together with the spacer ring 7 and a sealing ring 9 , in the assembled state of the connection device 10 between the conductor connection housing 5 and the contact terminal housing 6 is provided (s. 8th ), which neither dust nor moisture in the receiving space 66 penetration.

So no dust and no moisture through the passage 65 of the contact part housing 6 in the recording room 66 penetrate, lies the electrical contact part 1 at least partially sealing the contact terminal housing 6 at.

When assembled, the electrical conductor 4 through the implementation 55 of the conductor connection housing 5 guided. Furthermore, the electrical conductor 4 first through the relief spring ring 3 , then through the spacer 7 as well as the seal 8th and then through the contact ring 2 led before he on the pin contact 11 plugged or turned on.

Therefore, in the assembled state of the relief spring ring 3 , the seal 8th as well as the spacer 7 and the contact spring ring 2 in the recording room 66 arranged immovably.

The leader 4 includes an electrically conductive wire 42 , which can be made both as a strand as well as solid material, and a sheath 41 , which is preferably electrically insulating, and it has a conductor cross-section, here by a double arrow 44 (S. 2 ) is shown. He is by insertion in the insertion direction 43 mounted, whereby he last on the pin contact 11 plugged or turned on until it is on the electrical contact part 1 is applied.

So that he in the mounted state on train, ie contrary to the insertion direction 43 , is resilient, is the relief ring 3 intended. In contrast, the electrical contact between the wire 2 of the leader 4 and to ensure the pin contact is the contact ring 2 intended.

The spring washers 2 . 3 each have an opening, here for the relief spring ring 3 through an arrow 35 (S. 5 ) is shown. In the present embodiment, a conductor cross section 44 chosen, at least larger than the opening 35 the longer springs 21 . 31 is, so at least these springs 21 . 31 both spring washers 2 . 3 when inserting the conductor 4 in the insertion direction 43 bend. The spring washers 2 . 3 are resiliently provided so that they bend against a restoring force and into the sheath 41 of the leader 4 be pressed.

Because the spring washers 2 . 3 in the mounted state immovable in the receiving space 66 are arranged, the springs are 21 . 31 bent back in the mounted state at a tensile load and further into the sheath 41 pressed. Therefore, the leader 4 the mounted connection device 10 on the one hand no longer by pulling on the ladder 4 removable. The upstream in the pulling direction relief spring ring 3 on the other hand causes a strain relief. And furthermore, the restoring force has a radial component, which is shown here by the arrows F (see FIG. 4 ), and the contact spring ring 2 causes a contact force acting in the radial direction. The contact spring ring 2 is in the area of the pin contact 11 provided so that the contact force F on the contact spring ring 2 not just on the ladder 4 but also on the pin contact 11 acts, and a secure electrical contact between the wire 42 of the leader 4 and the pin contact 11 guaranteed.

To prevent the electrical conductor 4 through the springs 21 . 31 the spring washers 2 . 3 during installation or when handling the connection device 10 damaged, have the spring rings 2 . 3 an anti-rotation, which here as a Anformung 23 . 33 is formed (s. 2 ). The anti-rotation agent 23 . 33 acts with an anti-rotation agent 63 , which here on the contact connection housing 6 arranged and formed as a groove (s. 7 (b) ), together.

The connecting device according to the invention 10 is, only by moving the electrical conductor 4 in insertion direction 43 through the mentioned components 5 . 3 . 7 . 8th . 2 on the pin contact 11 , very easy to install and guaranteed on the one hand by means of the relief spring ring 3 caused strain relief and on the other hand by the on the ladder 4 and the pin contact 11 acting contact force F a secure contact of the conductor 4 with the pin contact 11 or the electrical contact part 1 , In addition, the connection device ensures 10 that the leader 4 not when handling the connection device 10 dissolves from this.

LIST OF REFERENCE NUMBERS

1

contact part

11

Pin contact, piercing contact

2

Contact spring ring

21

Springs for small conductor cross section

22

Springs for large conductor cross section

24

Contact area of the springs with the sheathing of the electrical conductor

23

Anti-rotation device, molding, web

3

Relief spring ring

31

Springs for small conductor cross section

32

Springs for large conductor cross section

34

Contact area of the springs with the sheathing of the electrical conductor

35

Opening of the relief spring ring

4

Electrical conductor

41

Sheath of the electrical conductor

42

Core of the electrical conductor

43

Conductor insertion direction

5

Conductor connection Enclosure

51

The contact part connection housing facing side of the conductor connection housing

52

From the contact terminal housing side facing away from the conductor connection housing

54

Mating thread, external thread of the conductor connection housing for arranging the contact connection housing to the conductor connection housing

55

execution

6

Contact adapter connector housing

61

The conductor connection housing facing side of the contact part terminal housing

62

Side facing away from the conductor connection housing side of the contact part connection housing

63

Anti-rotation counter, recess, groove

64

Thread, internal thread of the contact part connection housing for arranging the conductor connection housing to the contact connection housing

65

execution

66

accommodation space

7

spacer

8th

poetry

9

seal

10

Electrical connection device

F

At least the radially acting in the direction of the pin contact on the conductor component of the contact force

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• DE 1196745 [0003]

Claims (15)

Electrical connection device ( 10 ) for connecting an electrical conductor ( 4 ) is provided to an electrical assembly, wherein the connecting device ( 10 ) a relief spring ring ( 3 ) in the assembled state concentrically around the electrical conductor ( 4 ) is arranged and a strain relief of the electrical conductor ( 4 ), characterized in that the connecting device ( 10 ) a pin contact ( 11 ) and another contact spring ring ( 2 ), which in the assembled state is likewise arranged concentrically around the conductor and, in particular under tensile load of the electrical conductor ( 4 ), a contact force (F) on the pin contact ( 11 ) generated. Electrical connection device ( 10 ) according to claim 1, characterized in that the contact force (F) comprises a component which in the radial direction on the electrical conductor ( 4 ) acts. Electrical connection device ( 10 ) according to one of the preceding claims, characterized in that the contact spring ring ( 2 ) in the assembled state in the area of the pin contact ( 11 ) is provided. Electrical connection device ( 10 ) according to one of the preceding claims, characterized in that the relief spring ring ( 3 ) and the contact spring ring ( 2 ) are provided spaced apart in the assembled state. Electrical connection device ( 10 ) according to one of the preceding claims, characterized in that it comprises a spacer ( 7 ), which in the assembled state between the contact spring ring ( 2 ) and the relief spring ring ( 3 ) is arranged. Electrical connection device ( 10 ) according to one of the preceding claims, characterized in that between the relief spring ring ( 3 ) and the contact spring ring ( 2 ) a seal ( 8th ) is provided. Electrical connection device ( 10 ) according to one of the preceding claims, characterized in that it comprises a conductor connection housing ( 5 ) as well as a contact connection housing ( 6 ), wherein in the assembled state of the pin contact ( 11 ) in the contact connection housing ( 6 ) and the electrical conductor ( 4 ) in an insertion direction ( 43 ) through the conductor connection housing ( 5 ) in the contact connection housing ( 6 ) is guided. Electrical connection device ( 10 ) according to one of the preceding claims, characterized in that the contact spring ring ( 2 ) and the relief spring ring ( 3 ) in the mounted state in the contact connection housing ( 6 ) are arranged. Electrical connection device ( 10 ) according to one of the preceding claims, characterized in that the pin contact ( 11 ) on an electrical contact part ( 1 ) is arranged. Electrical connection device ( 10 ) according to one of the preceding claims, characterized in that in the assembled state of the relief spring ring ( 3 ) in the insertion direction ( 43 ) in front of the contact spring ring ( 2 ) is arranged. Electrical connection device ( 10 ) according to one of the preceding claims, characterized in that the electrical conductor ( 4 ) a, in particular electrically insulating, sheath ( 41 ) and an electrically conductive wire ( 42 ). Electrical connection device ( 10 ) according to one of the preceding claims, characterized in that the contact spring ring ( 2 ) and the relief spring ring ( 3 ) both springs ( 22 . 32 ) for connecting electrical conductors ( 4 ) with a small conductor cross-section as well as springs ( 21 . 31 ) for connecting electrical conductors ( 4 ) comprising a large conductor cross-section. Electrical connection device ( 10 ) according to one of the preceding claims, characterized in that one between the springs ( 21 . 22 . 31 . 32 ) of the contact spring ring ( 2 ) or the relief spring ring ( 3 ) formed opening ( 25 . 35 ) is smaller than the outer diameter ( 45 ) of the electrical conductor ( 4 ). Electrical connection device ( 10 ) according to one of the preceding claims, characterized in that the springs ( 21 . 22 . 31 . 32 ) of the contact spring ring ( 2 ) and the relief spring ring ( 3 ) during insertion of the electrical conductor ( 4 ) in the insertion direction ( 43 ) and in a contact area ( 24 . 34 ) on the electrical conductor ( 4 ), in particular on the sheath ( 41 ) of the electrical conductor ( 4 ), issue. Electrical connection device ( 10 ) according to one of the preceding claims, characterized in that the contact spring ring ( 2 ) and the relief spring ring ( 3 ) are provided identical.

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