Electrical connection element
阅读说明:本技术 电气连接元件 (Electrical connection element ) 是由 亚历山大·海尔曼 亚历山大·霍尔农 于 2018-05-16 设计创作,主要内容包括:本发明涉及一种电气连接装置(1),特别是二次回路焊接连接装置,其用于提供在焊接设备(S)的电极(3)的电极侧耦接点(2)与电源点(5)的电源侧耦接点(4)之间的电接触。所述连接装置(1)包括电导体(6),该电导体具有第一接触部(7)和第二接触部(8),其中第一接触部设置在电导体一端用于连接电极侧耦接点(2),第二接触部设置在电导体的与第一接触部(7)相对的一端并且用于连接电源侧耦接点(4)。第一接触部(7)与电极侧耦接点(2)以及第二接触部(8)与电源侧耦接点(4)构成插座-插头连接件(20、21)的形式,并且能够沿插入轴线(A)插接在一起。(The invention relates to an electrical connection device (1), in particular a secondary circuit welding connection device, for providing an electrical contact between an electrode-side coupling point (2) of an electrode (3) of a welding apparatus (S) and a power-supply-side coupling point (4) of a power supply point (5). The connecting device (1) comprises an electrical conductor (6) having a first contact section (7) which is arranged at one end of the electrical conductor for connecting the electrode-side coupling point (2) and a second contact section (8) which is arranged at the opposite end of the electrical conductor from the first contact section (7) and is used for connecting the power-supply-side coupling point (4). The first contact section (7) and the electrode-side coupling point (2) and the second contact section (8) and the power-supply-side coupling point (4) form a socket-plug connection (20, 21) and can be plugged together along an insertion axis (A).)
1. An electrical connection device (1), in particular a secondary-circuit welding connection device, for establishing an electrical contact between an electrode-side coupling point (2) in the region of an electrode (3) of a welding apparatus (S) and a power-supply-side coupling point (4) of a power supply point (5), wherein
The connecting device (1) comprises an electrical conductor (6) having a first contact section (7) arranged at an end and a second contact section (8) arranged at an end opposite the first contact section, wherein the first contact section (7) is intended for connection to the electrode-side coupling point (2) and the second contact section (8) is intended for connection to the power-supply-side coupling point (4),
it is characterized in that the preparation method is characterized in that,
the first contact section (7) and the electrode-side coupling point (2) and the second contact section (8) and the power-supply-side coupling point (4) are designed as socket/plug connections (20, 21) and can be plugged together along an insertion axis (A).
2. Electrical connection device (1) according to claim 1, characterised in that the electrical conductor (6) is configured as a flexible cable and/or the electrical conductor (6) has a thickness of more than 200mm2And/or at least one electrically conductive contact strip (11, 12) is arranged between each connection point (2, 4) and the respective contact portion (7, 8).
3. Electrical connection device (1) according to claim 1 or 2,
the contact sections (7, 8) of the electrical conductor (1) are designed as plug pins (21), and the coupling points (2, 4) of the electrode (3) or the power supply point (5) are designed as sockets (20);
alternatively, the contact sections (7, 8) of the electrical conductor (1) are designed as sockets (20) and the coupling points (2, 4) of the electrode (3) or of the power supply point (5) are designed as pins (21).
4. The electrical connection device (1) according to claim 3, characterized in that the plug pin (21) is oriented in the direction of the central axis (M) of the electrical conductor (1); or the plug pin (21) is inclined at an angle, in particular at a right angle or at 45 °, with respect to a central axis (M) of the electrical conductor (1).
5. The electrical connection device (1) according to one of the preceding claims, characterized in that a contact unit (9) with which an electrical contact can be established in the socket/plug connection (20, 21) is arranged between the first contact section (7) and the electrode-side coupling point (2) and between the second contact section (8) and the power-supply-side coupling point (4), respectively.
6. The electrical connection device (1) according to claim 5, characterised in that the contact unit (9) comprises a contact body (10) designed to be electrically conductive, a first contact strip (11) and a second contact strip (12), the first contact strip (11) establishing an electrical contact between the contact portion (7, 8) and the contact body (10), and the second contact strip (12) establishing an electrical contact between the contact body (10) and the coupling point (2, 4).
7. Electrical connection device (1) according to claim 5 or 6, characterised in that the contact strips (11, 12) are supported in recesses on the contact body (10); and/or that the two contact strips (11, 12) are arranged at least partially overlapping one another, viewed in a cross-section perpendicular to the insertion axis (A).
8. Electrical connection device (1) according to one of claims 5 to 7, characterised in that a mechanical locking connection (13) is provided between the electrical conductor (6) and the contact body (10).
9. Electrical connection device (1) according to claim 8, characterized in that the mechanical locking connection (13) prevents a movement between the electrical conductor (6) and the contact body (10) in the direction of the insertion axis (a) while allowing a rotational movement about the insertion axis (a); and/or a locking connection acts on a portion of the electrical conductor (6) or of the contact section (7, 8), the diameter of the locking connection being greater than the diameter of the contact section (7, 8).
10. Electrical connection device (1) according to one of claims 5 to 8, characterized in that the contact body (10) has an interior space (16) bounded by a side wall (15), wherein the side wall has a contact region (14), and wherein a contact portion (7, 8) of the electrical conductor (6) projects into the interior space (16), and the first contact strip (11) is located between an inner side (17) of the interior space (16) and the contact portion (7, 8); and wherein the second contact strip (12) is located on the outer side (18) and establishes an electrical contact with the socket (20).
11. Electrical connection device according to claim 10, characterized in that the contact body (10) has a compression surface (19) on the outside, wherein with the compression surface the contact body (19) can be connected with the respective coupling point (2) by means of a compression connection.
12. Electrical connection device according to one of claims 10 and 11, characterized in that the interior space (16) has a wall (22) opposite an access opening (20) through which the contact portions (7, 8) of the electrical conductor (6) protrude into the interior space (16), which wall closes the interior space (16) towards the rear.
13. Electrical connection device according to one of claims 5 to 12, characterized in that a seal (23) is arranged between the socket (20) and the contact body (10), which seal is arranged in front of the contact strip (12).
14. Electrical connection device according to one of the preceding claims, characterized in that the electrode-side coupling point (2) and/or the power-side coupling point (3) and/or the first contact part (7) and/or the second contact part (8) are provided with a cooling duct (30) which can be connected with a cooling hose (31).
15. Electrical connection device according to claim 14, characterized in that the cooling duct (30) is provided with a duct inlet (32) and a duct outlet (33), one of the cooling hoses (31) being arranged in the region of the duct inlet (32) and the other of the cooling hoses (31) being arranged in the region of the duct outlet (33).
16. Electrical connection device according to one of the preceding claims 14 to 15, characterized in that the cooling duct (30) is arranged integrally on the pin (21) and the socket (20) and passes through the pin (21) or the socket (20) at a point spaced apart from the electrical contact points between the pin (21) and the socket (20).
17. Electrical connection device according to one of the preceding claims 14 to 15, characterized in that the cooling duct is part of a sleeve (36) which circumferentially surrounds the point to be cooled.
18. Welding device comprising an electrode (3) with an electrode-side coupling point (2), a power supply point (5) with a power supply-side coupling point (4) and at least one electrical connection device according to one of the preceding claims.
Technical Field
The present invention relates to an electrical connection element for transmitting high currents, in particular for use in a welding apparatus according to the preamble of
Background
Disclosure of Invention
Starting from this prior art, the object of the present invention is to propose an electrical connection device which overcomes the disadvantages of the prior art. In particular, a preferred object is to propose a connection device which is easier to connect to a welding apparatus, in particular and preferably, while the connection has as good electrical contact properties as possible.
This object is achieved by the subject matter of
This means that in the connecting device according to the invention the coupling point and the contact part connected to the coupling point are configured as a socket/plug connection and can be plugged together along the plug-in axis.
An advantage of designing the two ends of the electrical conductor to be connected to the respective coupling points is that the connection is easier to establish. In addition, the current transmission with respect to the terminals or terminal-like elements is improved, since the terminals or terminal-like elements have an undefined electrical contact. In addition, the connecting means can be easily plugged together and detached again, which is advantageous in inspection work.
The electrode-side coupling point can be located directly on the electrode or on the arm of the welding device on which the electrode is mounted. In the context relevant to the present application, "electrode side" is to be understood as meaning that the respective coupling point leads to the electrode. The electrode-side coupling point may be near the electrode, near the welding arm on which the electrode is mounted, or a connecting element connecting the welding arms.
The connection means is preferably of unipolar design. This means that the pair comprising the electrode-side coupling point, the power-supply-side coupling point and the connecting means is unipolar. Two connecting devices are then arranged in one welding apparatus.
The socket/plug connection is preferably a cylindrical connection, so that the electrical conductor can be rotated relative to the coupling point. In this way, any breaks in the electrical conductors can be eliminated.
The two contact portions are preferably each designed to be substantially identical or even identical to one another. As are the two coupling points. In this way, it is advantageous that the current transmission from the power supply point to the electrical conductor and from the electrical conductor to the electrode, respectively, has the same characteristics. The two contact portions may also be different depending on the installation situation.
The electrical conductor is preferably configured in the form of a flexible cable. When the installation condition requires a slightly greater flexibility, a flexible cable is preferably used. In addition, the flexible cable can compensate for movement between the power supply side and the electrode side during welding very easily. Furthermore, the flexible cable enables a geometrical bridging, so that complex contacts can be dispensed with. In this respect, by designing the electrical conductor as a flexible cable, a very efficient production, in particular a cost-effective production, of the electrical conductor can be achieved.
The electrical conductor preferably has a thickness of more than 200mm2Cross-section of (a). In particular, the cross-section is 200mm2To 5000mm2Or 500mm2To 800mm2。
At least one electrically conductive contact strip is preferably arranged between each coupling point and the corresponding contact. With the contact strip, a defined electrical contact can be provided.
In the present example, a "contact strip" is understood to be an electrically conductive contact element which has the shape of a strip and comprises a plurality of spring-loaded contact members. The contact member can be provided by the contact strip itself or attached to the contact strip as a separate element.
In a first variant, the contact of the electrical conductor is preferably configured as a plug, and the coupling point of the electrode or of the power supply point is preferably configured as a socket.
In a second variant, the contact portions of the electrical conductors are configured as sockets and the coupling points of the electrodes or power supply points are configured as pins.
The advantage of both variants is that no errors occur during the plugging process.
In a third variant, one end of the electrical conductor is configured as a plug and the other end is configured in the form of a socket, the coupling point being similarly designed accordingly.
Preferably, the pin is oriented in the direction of the central axis of the electrical conductor. Alternatively, the pin is oriented at an angle, in particular at a right angle or 45 °, with respect to the central axis of the electrical conductor.
In the case of an angled version, the electrical conductor can be provided with a further electrical contact element in the region of the bending point. The electrical contact element may be, for example, a plug-in connector.
Preferably, a respective contact unit is provided between the first contact and the electrode-side coupling point and between the second contact and/or the mains-side coupling point, by means of which an electrical contact can be established in the socket/plug connection.
The contact unit has the advantage that the contact between the socket and the plug can be further improved. The advantage is, inter alia, that an optimal space ratio for optimizing the electrical contact can be formed.
Preferably, the contact unit includes: a contact body designed to be electrically conductive, a first contact strip and a second contact strip, the first contact strip establishing an electrical contact between the contact portion and the contact body, and the second contact strip establishing an electrical contact between the contact body and the coupling point. This means that the electrical contact between the coupling point and the contact part is realized by the first contact strip, the contact body and the second contact strip.
With regard to an advantageous design of the contact strip, reference is made to the above description.
Preferably, the contact strip is supported in a recess on the contact body. An advantage of this type of support is that the socket and the pin each have a substantially cylindrical surface with a constant diameter, thereby simplifying the production of the socket and the pin. In addition, the respective diameters do not have to be manufactured exactly so that large tolerances can be tolerated. These tolerances can then be eliminated by the contact strip. This means that larger manufacturing tolerances can be selected.
Preferably, the two contact strips are arranged at least partially overlapping one another, viewed in cross section at right angles to the insertion axis. This means that the outer contact strip is located substantially in the same area as the inner contact strip. In this way, the transmission of current in the contact strip can be optimized.
Preferably, a mechanical locking connection is provided between the electrical conductor and the contact body. The electrical conductor can be locked relative to the contact body such that the connection between the electrical conductor and the contact body is not accidentally separated.
The locking connection preferably acts on the respective contact portions of the contact body and the electrical conductor. The locking means may however also be held elsewhere on the electrical conductor.
Preferably, the mechanical locking connection prevents movement between the electrical conductor and the contact body in the direction of the insertion axis, while allowing rotational movement about the insertion axis. The electrical conductor in the contact body can thus be moved rotatably about the insertion axis, wherein the electrical conductor is prevented from falling out of the contact body.
Preferably, a locking connection acts on a portion of the electrical conductor or the contact portion, the locking connection having a diameter which is larger than the diameter of the contact portion.
Preferably, the locking connection is a stop in the receptacle movably supported on the contact body, the movement being perpendicular to the insertion axis and around a circumferential groove on the bolt, said stop engaging in the groove and being movable out of the groove.
Preferably, the contact body has an inner space delimited by a side wall providing a contact region with an annular cross section, the contact portion of the electrical conductor projecting into the inner space, and the first contact strip being located between the inner side and the contact portion in the inner space; the second contact strip is located on the outside and establishes an electrical contact with the socket.
In the inserted state, the contact body is preferably located substantially completely or at least partially in the interior space of the socket, in the present example the contact area of the contact body being located completely in the interior space of the socket.
Preferably, the contact body has a compression surface on the outside, by means of which it can be connected with the respective coupling point. This means that, for example, the contact body is pressed into the socket and is held therein in a non-positive and/or positive manner. A compression bond is then established by the compression surface and the inside of the socket. Thereby ensuring the conductivity of the current transmission.
Preferably, the inner space has a wall opposite an access opening through which the contact portion of the electrical conductor protrudes into the inner space. The wall closes the interior space toward the rear. Preferably, the wall extends over the entire cross section, so that the socket is configured in the form of a blind hole and is substantially accessible only through the access opening.
Preferably, a seal is arranged between the socket and the contact body. The seal is arranged in front of the contact strip, viewed in the insertion direction. This means that the seal is positioned closer to the entrance opening so that water or moisture cannot reach the contact strip through the entrance opening. This can prevent corrosion damage, thereby extending the service life.
In a further embodiment, the electrode-side and/or the power-supply-side and/or the first and/or the second contact are provided with a cooling line, which can be connected to a cooling hose. Thereby enabling an efficient cooling to be provided in the region of the electrical contacts.
Preferably, the cooling duct is provided with a duct inlet and a duct outlet, one of the cooling hoses being arranged in the region of the duct inlet and the other of the cooling hoses being arranged in the region of the duct outlet.
Cooling ducts are preferably integrally molded on the pin and/or the socket, the cooling ducts passing through the pin and the socket at points spaced from electrical contacts between the pin and the socket. The spacing between the electrical contacts between the pin and the socket may be axial or radial with respect to the socket.
However, the cooling duct may also be part of a sleeve which peripherally surrounds the point to be cooled. The sleeve is an element formed separately from the pin and/or socket.
A welding device comprising an electrode with an electrode-side coupling point, a power supply point with a power supply-side coupling point and at least one electrical connection device according to the above description.
The welding device is preferably a spot welding device.
Further embodiments are given in the dependent claims.
Drawings
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings, which are for illustration purposes only and should not be construed as limiting. Shown in the attached drawings:
FIG. 1 is a perspective view of a welding apparatus;
FIG. 2 is a cross-sectional view of an embodiment of an electrical connection apparatus according to the present invention;
FIG. 3 is an exploded perspective view of an embodiment of an electrical connection apparatus according to the present invention;
fig. 4 is another perspective view of the electrical connection device according to fig. 2 to 3;
fig. 5 is a detailed cross-sectional view of the electrical connection device according to fig. 2 to 4;
fig. 6 is another detailed cross-sectional view of the electrical connection device according to fig. 2 to 5;
FIG. 7 is another variation of an electrical connection apparatus;
FIG. 8 is another variation of an electrical connection apparatus;
FIG. 9 is an exploded perspective view of a coupling device with an additional cooling system according to the present invention;
FIG. 10 is the connecting device according to FIG. 9 with an additional cooling system in the connected state;
FIG. 11 is a cross-sectional view through a first end region of a connection device having an additional cooling system;
FIG. 12 is a cross-sectional view through a second end region of a connection device having an additional cooling system.
Detailed Description
Fig. 1 shows a welding apparatus S. The welding device S includes an
The
In the embodiment shown, the
Next, the
The
The connecting
The advantage of such a device is that the
With regard to the mounting, it is advantageous: the cable is first slightly bent and then the
Contact strips 11, 12 are preferably arranged between the coupling points 2, 4 and the
In the embodiment shown, the
In the variant according to fig. 2 to 6, the
In the case of an angled version, the electrical conductor can be provided with a further electrical contact element 29 in the region of the bending point 28. The electrical contact elements 29 can be, for example, plug-in connectors which are arranged on the ends of the
In the embodiment shown in fig. 1 to 8,
The
Furthermore, the
In addition, the socket/
In the embodiment shown, the
The
The
The
The
In the exemplary embodiment shown, the
The compression connection is preferably established by a pressure of 2000 to 2500 newton.
The two
The
The
A
In the region of the
Furthermore, a
In fig. 9 to 12, another embodiment of the
For example, cooling ducts can be provided by means of corresponding holes in the individual elements.
Each cooling
Fig. 9 to 12 show that the cooling
For the
This means that the cooling duct is preferably located between the contact points between the
However, in other designs, the cooling conduit may be part of a
Description of the reference numerals
1
2 electrode
3
4 power supply
5 Power Point 25 Lock stop
6 electric conductor 26 groove
7
8 second contact portion 28 bending point
9 contact unit 29 electrical contact element
10
11
12
13
14
15
16
17 internal a insertion axis
18 external E Electrical Path
19 compression surface S welding apparatus
20 central axis of socket M
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