Overvoltage protection device with at least one overvoltage protection unit, consisting of a socket part and a plug part which can be connected to the socket part

Abstract

The invention relates to an overvoltage protection device with at least one overvoltage protection unit, consisting of a socket part and a plug part which can be connected to the socket part and which receives means for protecting against an overvoltage, wherein insulated electric conductors can be introduced into the socket part, said electric conductors being contacted using vampire or cutting clamps, thereby penetrating the conductor insulation, and with contact surfaces which can be found on the socket part and which correspond to mating contact surfaces on the base of the plug part. According to the invention, the socket part is made of multiple parts consisting of a base part and a lever part. The base part is designed as a marble panel and has multiple parallel grooves for inserting and receiving the insulated electric conductors. On one face of the base part, hook-shaped protrusions are provided parallel to the grooves. The lever part has axle stubs, which engage into the hook-shaped protrusions, on one lever end. The lever part has at least one cutting clamp on the lever part lower face facing the marble panel and in the vicinity of the axle stubs, wherein the cutting clamp leads to a plug contact which can be found in the lever part and which can be accessed from the upper face of the lever part in order to receive the plug part.

Claims

1. An overvoltage protection device with at least one overvoltage protection unit, composed of a base part and a plug part connectable to the base part, which accommodates means for protecting against overvoltage, wherein insulated electrical conductors can be introduced into the base part, which are contacted by means of vampire or cutting clamps while penetrating the conductor insulation, and contact surfaces located in the base part, which correspond to mating contact surfaces on the bottom of the plug part, characterized in that the base part is realized to be multi-part and is composed of a bottom part (1) and a lever part (6), wherein the bottom part (1) is configured as a core plate and has a plurality of grooves (2) extending in parallel for inserting and accommodating the insulated electrical conductors (3), and on one side of the bottom part (1) and extending in parallel to the grooves (2), hook-shaped protrusions (4) are provided, furthermore at one lever end, the lever part (6) has lateral axle stubs (7) engaging into the hook-shaped protrusions (4), on its lower side pointing toward the core plate (1) and close to the axle stubs (7), the lever part (6) has at least one cutting clamp (8), wherein the cutting clamp (8) leads to a plug contact or a mating plug contact (9) located in the lever part (6), which plug contact is accessible from the upper side of the lever part (6) for accommodating the plug part (10), and wherein in the cutting area, the cutting clamps (8) have protrusions (12) extending toward groove sidewalls of the grooves (2), wherein the protrusions (12) engage into guiding recesses within the bottom part (1) when the closing movement of the lever part (6) toward the bottom part (1) is executed.

2. The overvoltage protection device according to claim 1, characterized in that in the core plate (1), a pair of hook-shaped protrusions (7) is provided per groove (2), and each groove (2) has a lever part (6) associated.

3. The overvoltage protection device according to claim 1, characterized in that the groove depth substantially corresponds to the diameter of the conductor (3) including the insulation.

4. The overvoltage protection device according to claim 1, characterized in that when the lever part (6) is actuated, the respective cutting clamp (8) cuts through and displaces the insulation of the respectively inserted conductor (3) and contacts the conductor core over a large area and at the circumferential side.

5. The overvoltage protection device according to claim 1, characterized in that a window-like breakthrough for recognizing the position of the conductor (3) and cutting clamp (8) is formed in the lateral surface of the bottom part (1).

6. The overvoltage protection device according to claim 1, characterized in that a recess having clamping lugs (16) for assembly to a top hat rail (5) is provided at the underside of the bottom part (1).

7. The overvoltage protection device according to claim 1, characterized in that the lever part (6) can be hung into the hook-shaped protrusions (4) of the bottom part (1) with its axle stubs (7).

8. The overvoltage protection device according to claim 1, characterized in that the respective cutting clamp (8) is configured as a punched and bent part and is attached at the underside of the lever part (6) in a longitudinal recess.

9. The overvoltage protection device according to claim 1, characterized in that the underside of the lever part (6) has a setback portion (13), which is complementary to a longitudinal recess (14) in the bottom part (1), which recess extends in parallel to the respective groove (2), so that the lever is guided when closing, and a form closure between the lever part (6) and the bottom part (1) is given when the closing movement is completed.

10. An overvoltage protection device with at least one overvoltage protection unit, composed of a base part and a plug part connectable to the base part, which accommodates means for protecting against overvoltage, wherein insulated electrical conductors can be introduced into the base part, which are contacted by means of vampire or cutting clamps while penetrating the conductor insulation, and contact surfaces located in the base part, which correspond to mating contact surfaces on the bottom of the plug part, characterized in that the base part is realized to be multi-part and is composed of a bottom part (1) and a lever part (6), wherein the bottom part (1) is configured as a core plate and has a plurality of grooves (2) extending in parallel for inserting and accommodating the insulated electrical conductors (3), and on one side of the bottom part (1) and extending in parallel to the grooves (2), hook-shaped protrusions (4) are provided, furthermore at one lever end, the lever part (6) has lateral axle stubs (7) engaging into the hook-shaped protrusions (4), on its lower side pointing toward the core plate (1) and close to the axle stubs (7), the lever part (6) has at least one cutting clamp (8), wherein the cutting clamp (8) leads to a plug contact or a mating plug contact (9) located in the lever part (6), which plug contact is accessible from the upper side of the lever part (6) for accommodating the plug part (10), and wherein the underside of the lever part (6) has a setback portion (13), which is complementary to a longitudinal recess (14) in the bottom part (1), which recess extends in parallel to the respective groove (2), so that the lever is guided when closing, and a form closure between the lever part (6) and the bottom part (1) is given when the closing movement is completed.

11. An overvoltage protection device with at least one overvoltage protection unit, composed of a base part and a plug part connectable to the base part, which accommodates means for protecting against overvoltage, wherein insulated electrical conductors can be introduced into the base part, which are contacted by means of vampire or cutting clamps while penetrating the conductor insulation, and contact surfaces located in the base part, which correspond to mating contact surfaces on the bottom of the plug part, characterized in that the base part is realized to be multi-part and is composed of a bottom part (1) and a lever part (6), wherein the bottom part (1) is configured as a core plate and has a plurality of grooves (2) extending in parallel for inserting and accommodating the insulated electrical conductors (3), and on one side of the bottom part (1) and extending in parallel to the grooves (2), hook-shaped protrusions (4) are provided, furthermore at one lever end, the lever part (6) has lateral axle stubs (7) engaging into the hook-shaped protrusions (4), on its lower side pointing toward the core plate (1) and close to the axle stubs (7), the lever part (6) has at least one cutting clamp (8), wherein the cutting clamp (8) leads to a plug contact or a mating plug contact (9) located in the lever part (6), which plug contact is accessible from the upper side of the lever part (6) for accommodating the plug part (10), and wherein when the lever part (6) is actuated, the respective cutting clamp (8) is configured such that it can cut through and displace the insulation of the respective inserted conductor (3) by means of a chamfer and contacts the conductor core over a large area and at the circumferential side.

Description

(1) The invention will be explained in more detail below using an exemplary embodiment and with reference to Figures.

(2) In this case, shown are in:

(3) FIGS. 1a-1d an exemplary assembly sequence using the overvoltage protection device according to the invention with the bottom part and lever part;

(4) FIG. 2 a front view of an arrangement of a bottom part with the attached lever part mounted to a top hat rail, and a conductor inserted prior to executing the lever movement for forming the insulation displacement;

(5) FIG. 3 a representation similar to that according to FIG. 2, but in a lateral view;

(6) FIG. 4 a lateral sectional representation along line A-A according to FIG. 2 in the state where the cutting edge of the cutting clamp contacts the cable or the core; and

(7) FIG. 5 a perspective representation of the overvoltage protection device according to the invention in a state similar to that of FIG. 4.

(8) The overvoltage protection device according to the invention is composed of a multi-part base part according to the Figures.

(9) First, a bottom part 1 configured as a core plate is present.

(10) In the bottom part, a plurality of grooves 2 extending in parallel are present for inserting and receiving insulated electrical conductors 3.

(11) At one end of the bottom part 1 and in parallel to the grooves 2, hook-shaped protrusions 4 are provided.

(12) At its underside, the bottom part 1 is provided with a recess for enabling it to be snapped onto a top hat rail 5.

(13) Furthermore, lever parts 6 are present, with axle stubs 7 being formed at one lever end.

(14) These axle stubs 7 are capable of engaging into the hook-shaped protrusions 4 so that a detachable articulated connection is the result.

(15) At its underside pointing toward the core plate or toward the bottom part 1 and close to or nearby the axle stubs 7, the lever part 6 has at least one cutting clamp 8.

(16) The cutting clamp 8 in question leads to a plug contact 9 located in the lever part 6, which plug contact is accessible from the upper side of the lever part 6 for receiving the plug part 10.

(17) The plug contact 9 may be an integral part of a one-piece punched and bent part which has the cutting clamp 8 at one end and the mentioned plug contact 9 at the other end.

(18) A pair of hook-shaped protrusions 4 is provided per groove 2 in the core plate 1, wherein each groove also has a lever part 6 associated as can be understood from the sequence of FIGS. 1b to 1d.

(19) As can be understood from the view according to FIG. 2, the depth of the respective groove 2 is realized to be corresponding substantially to the diameter of the conductor 3.

(20) Thus, the conductor lies in the groove in a well embedded manner.

(21) The cutting clamp 8 has two cutting portions on the underside with a longitudinal slot following thereto. The cutting portions have a cutting edge or a chamfer in order to cut through and displace the insulation layer located on the conductor 3 when the cutting clamp enters so that the desired possibly large-area and circumferential electrical contact between the cutting clamp and the conductive core may be established and the surge current carrying capacity may be met according to the requirements.

(22) In the lateral surfaces of the bottom part 1, a guiding recess may in each case be present.

(23) Protrusions 12 of the cutting clamp 8 in question, which reach toward the groove sidewalls, engage into these respective guiding recesses. Hereby, the cutting clamp is prevented from evading when the closing movement is executed by pressing down the lever part toward the base part, and the contact reliability is increased.

(24) The underside of the lever part 6 has a setback portion 13 extending in the longitudinal direction and being complementary to a longitudinal recess 14 in the bottom part 1 so that the lever is guided when closing and a form closure is given between the lever part 6 and the bottom part 1 when the closing movement (see arrow representation according to FIG. 5) is completed.

(25) As already explained, the respective cutting clamp 8 may be configured as a punched and bent part and is attached at the underside of the lever part 6 in a gap or longitudinal recess provided there.

(26) The attachment may be performed by means of screws or rivets 15.

(27) The fixing of the bottom part on the top hat rail 5 by means of the clamping lugs 16 can in particular be understood with reference to FIGS. 3 and 4.

(28) The solution according to the invention results in a secure and reliable insulation displacement connection and has the advantages of a screwless clamping such as, for example, resistance to vibration.

(29) The contacting is performed by a bilateral insulation displacement starting from a position in the representation according to FIG. 2.

(30) Due to the lever mechanism, larger forces for cutting through the insulation and contacting the core are not required so that the solution according to the invention is also applicable to larger diameters. The cutting edge of the cutting clamp is configured such that the insulation is first cut and displaced by a chamfer, and subsequently a large-area contact point freed from insulating material is present.