Electronic housing

Abstract

Electronic housing (1) with at least one electrical terminal (2) arranged in a recess (3) in the electronic housing (1), wherein the terminal (2) has a terminal housing (7), a first conductor connection element (8) and a first busbar (9), wherein a first conductor entry opening (10) is formed in the terminal housing (7) so that a conductor inserted through the first conductor entry opening (10) can be electrically connected to the first busbar (9) by means of the first conductor connection element (8), characterized by that in the terminal housing (7) of the terminal block (2) a second conductor connection element (11) and a second busbar (12) are arranged, wherein the first conductor connection element (8) is designed as a screw connection and the second conductor connection element (11) as a spring clamp connection, that in the terminal housing (7) of the terminal block (2) a second conductor entry opening (13) is formed on the side opposite the first conductor entry opening (10), so that a conductor inserted through the second conductor entry opening (13) can be electrically connected to the second busbar (12) by means of the second conductor connection element (11), and that the terminal block (2) can be inserted in a first position or in a second position rotated by 180° in the recess (3) in the electronic housing (1), wherein a conductor to be connected can be inserted into the first conductor entry opening (10) in the first position of the terminal block (2) and into the second conductor entry opening (13) in the second position, wherein, depending on the installation position of the terminal block (2) in the electronic housing (1), either only the first conductor connection element (8) or only the second conductor connection element (11) is accessible for connecting the conductor, and wherein the respective other conductor connection element (8, 11) is directed with its conductor entry opening (10, 13) into the interior of the electronic housing (1).

Description

[0001] The invention relates to an electronics housing with at least one electrical terminal block arranged in a recess in the electronics housing, wherein the terminal block comprises a terminal housing, a first conductor connection element and a busbar, wherein a first conductor entry opening is formed in the terminal housing, so that a conductor inserted through the first conductor entry opening can be electrically connected to the busbar by means of the first conductor connection element.

[0002] Electronic enclosures for electronic devices, which may include, for example, devices for measurement, control and regulation technology, interface modules, power supplies, or surge protection devices, serve to house and protect the electrical and electronic components of the electronic devices. Furthermore, electronic enclosures also accommodate electrical terminal blocks for connecting conductors to the electronic devices or to the electrical and electronic components located within the enclosures. Individual components are often mounted on printed circuit boards (PCBs), to which the conductors are connected using the terminal blocks. Particularly when the electronic enclosures are designed for mounting on a DIN rail, the electrical terminal blocks are usually located at the upper corners of the enclosure facing away from the DIN rail.The upper corners of the electronic housings have recesses in which the terminal blocks are arranged or mounted, so that the conductor connection elements of the terminal blocks are accessible for connecting the conductors. This facilitates connecting the conductors to the terminal blocks when several electronic housings or electronic devices are mounted side by side on a DIN rail.

[0003] In electrical terminal blocks, screw terminals or spring-clamp terminals, in the form of tension spring terminals or torsion spring terminals, are primarily used as conductor connection elements. The clamping principle of tension spring terminals is similar to that of screw terminals. While in a screw terminal a tension sleeve pulls the conductor against the terminal block when the adjusting screw is actuated, in a tension spring terminal this task is performed by the clamping leg of the tension spring, which has a recess. In torsion spring terminals, on the other hand, the conductor is pressed against the terminal block by the clamping leg of the spring.

[0004] To operate a spring-loaded terminal block, an operating tool is required, such as a screwdriver, which is inserted into an operating slot to open the terminal block. The tip of the screwdriver then tensions the spring, causing the clamping point to open. A conductor to be connected can then be inserted through the recess in the clamping arm. After the operating tool is withdrawn, the lower edge of the recess clamps the conductor against a busbar connected to the spring-loaded terminal block.

[0005] Leg-spring terminals, on the other hand, have the advantage that a stripped rigid conductor or a flexible conductor fitted with a ferrule can be connected directly to the terminal without tools by inserting the conductor into the clamping point between the end of the terminal leg and the current bar. Such terminals are therefore also referred to as direct-plug terminals or push-in terminals (see brochure “CLIPLINE 1 2011 series terminals”, page 17 of Phoenix Contact GmbH & Co. KG).

[0006] DE 10 2013 101 830 A1 discloses an electrical terminal block with a terminal housing consisting of a main housing part and a housing closure part. A contact insert, consisting of a busbar and two clamping springs, can be inserted into the hood-shaped main housing part. This allows two conductors to be connected to the terminal block simultaneously through two conductor entry openings provided on opposite sides of the main housing part.

[0007] DE 199 18 842 A1 discloses a busbar connection for PE and N conductors, consisting of an insulating housing in which at least one terminal with a large conductor cross-section and a plurality of terminals with smaller conductor cross-sections are arranged, wherein the terminals, designed as spring-clamp connections, are all electrically connected to each other via a common busbar. The insulating housing of the terminal has the shape of an angle, so that two insulating housings of this type can be assembled with an arrangement rotated 180° relative to each other to form a rectangular shape.

[0008] From DE 94 20 189 U1, an electronics enclosure for DIN rail mounting is known, comprising several terminal blocks arranged in series and a printed circuit board located inside the enclosure. The terminal blocks are grouped in rows into pluggable terminal strips that can be attached to the enclosure.

[0009] DE 20 2006 015 897 U1 discloses an electronic device comprising a housing, a printed circuit board arranged within the housing, and several connectors, each of which has a plug-in terminal in the housing for receiving a connector. To prevent unintentional disconnection of a connector from a plug-in terminal, a locking element for securing an inserted connector is pivotably arranged on the housing in the area above the plug-in terminal.

[0010] DE 10 2012 105 509 A1 discloses an electronics housing with several plug-in contact units, each of which can be fitted with a connector. Each plug-in contact unit is associated with an ejector unit pivotally mounted about a pivot axis and equipped with an ejector arm, so that a fitted connector can be detached from the housing by pivoting the ejector unit.

[0011] To offer users different connection options, functionally identical electronic devices with essentially the same housing designs are offered, but with different electrical terminals. Since terminals with different conductor connection elements typically have different terminal housings, the respective electronic housings must also be at least partially different in design to accommodate and connect the various electrical terminals. This results in multiple variants of the electronic devices or housings being required for functionally identical electronic devices, such as the same types of power supplies or interface modules, leading to increased documentation and, in particular, increased inventory.

[0012] The present invention therefore aims to provide an electronics housing that avoids the aforementioned disadvantages. The goal is to offer the customer various connection options while minimizing the number of housing variants required.

[0013] This problem is solved in the electronic housing described above, with the features of claim 1, by arranging a second conductor connection element and a second busbar in the terminal housing of the terminal block, wherein the first conductor connection element is designed as a screw terminal and the second conductor connection element as a spring-clamp terminal. Furthermore, a second conductor entry opening is provided in the terminal housing of the terminal block on the side opposite the first conductor entry opening, so that a conductor inserted through the second conductor entry opening can be electrically connected to the second busbar by means of the second conductor connection element.The terminal block and the electronics housing are designed in such a way that the terminal block can be inserted into the recess in the electronics housing in a first position or in a second position rotated by 180°, whereby a conductor to be connected can be inserted into the first conductor entry opening in the first position of the terminal block and into the second conductor entry opening in the second position.

[0014] The electronic housing according to the invention thus has an electrical terminal block, which is a type of "combination terminal" that has two different types of conductor connection elements for connecting a conductor. A conductor can therefore be connected to the terminal block either by means of the screw connection or by means of the spring-clamp connection when the electrical terminal block is arranged in the corresponding position in the recess in the electronic housing. Even though the electrical terminal block has two conductor connection elements, only one of the two conductor connection elements is accessible through the corresponding conductor entry opening when the terminal block is mounted in the electronic housing.This creates the possibility, by appropriately arranging the electrical terminal block in the recess in the electronics housing, for example during the assembly of the electronics housing, to provide an electronics housing with a screw terminal or an electronics housing with a spring-loaded clamp terminal.

[0015] According to an advantageous embodiment of the electronic housing according to the invention, a cover is formed in the area of ​​the recess for the terminal block, so that the terminal block can be removed from or inserted into the electronic housing when the cover is open. This allows the user to change the orientation of the electrical terminal block within the electronic housing even after it has been installed, thereby enabling the exchange of the conductor connection element accessible for connecting a conductor. The electronic housing thus features a type of reversible connector as its terminal block, offering two different connection faces or connection options.

[0016] If, upon delivery of the electronic housing, the terminal block is inserted in its first position, where the first conductor entry opening in the terminal block is accessible through the recess in the housing, a conductor can be connected using the spring-loaded clamp. However, a user also has the option of opening the cover on the electronic housing, removing the terminal block, rotating it 180°, and then reinserting it in the second, rotated position. In this position, the second conductor entry opening in the terminal block is accessible through the recess in the housing for connecting a conductor using the spring-loaded clamp.The electrical terminal block thus has two different connection faces pointing in opposite directions, whereby, depending on which of two possible positions the terminal block is arranged in the electronic housing, one or the other connection face is accessible from the outside for connecting an electrical conductor.

[0017] According to a preferred embodiment of the invention, the cover is integrally connected to the electronics housing via a hinge, so that the cover cannot be lost. Preferably, the hinge is designed as a film hinge, allowing the cover to be easily pivoted from its first, closed position to its second, open position. To ensure the cover is as easily accessible as possible, the cover and the hinge are preferably located on the top of the electronics housing. When the cover is in its first, closed position, it is preferably latched to the electronics housing, thus securing the cover in the closed position.Additionally, a locking element may be formed between the cover and the electronics housing, which can only be opened using a special tool or a key, so that the cover can only be opened by an authorized person.

[0018] There are various ways in which the first and second conductor connection elements can be configured. The following descriptions will always focus on one first and one second conductor connection element, regardless of the fact that the electrical terminal block can also have multiple first and multiple second conductor connection elements, in which case it would not be a single-pole terminal block but a multi-pole terminal block. The individual first and second conductor connection elements are then preferably configured identically.

[0019] According to a first embodiment, the first conductor connection element, designed as a screw terminal, has an adjusting screw and a pull sleeve that can be actuated by means of the adjusting screw. A section of the first busbar is arranged in the receiving space of the pull sleeve, so that the position of the pull sleeve relative to the busbar can be changed by adjusting the adjusting screw. A conductor inserted through the first conductor entry opening into the receiving space of the pull sleeve can then be clamped by the pull sleeve against the section of the first busbar, thereby establishing the electrically conductive connection between the conductor and the busbar. In this embodiment, the first conductor connection element is thus a classic screw terminal, as has been used in principle for decades in electrical terminal blocks.

[0020] According to one embodiment of the invention, the second conductor connection element, designed as a spring-clamp terminal, has a loop-shaped tension spring, wherein the tension spring and a section of the busbar form a tension spring clamp. The loop-shaped tension spring has a clamping leg with a recess and a contact leg, which are approximately perpendicular to each other and connected by a curved back section. The section of the busbar associated with the tension spring projects through the recess in the clamping leg, so that a conductor inserted into the recess through the second conductor entry opening can be clamped against the busbar by the clamping leg or the lower edge of the recess.In this version, the second conductor termination element is therefore a classic tension spring that must be opened using a tool so that a conductor to be connected can be inserted into the clamping point through the recess in the clamping leg.

[0021] According to an alternative, preferred embodiment of the invention, the second conductor connection element is a torsion spring comprising a clamping leg and a contact leg, wherein the clamping leg, or its free end, forms a clamping point with a section of the busbar for a conductor inserted through the second conductor entry opening. The clamping spring can be U-shaped or V-shaped, with the contact leg then abutting a corresponding contact wall or a contact projection in the terminal housing. However, the clamping spring can also have a nearly closed shape, with an angled retaining leg attached to the contact leg. The retaining leg can have an opening through which a section of the busbar extends, with the angled end of the retaining leg preferably resting on the busbar, so that the torsion spring is self-supporting and attached to the busbar.

[0022] If the second conductor connection element is designed as a torsion spring, so that the electrical terminal has a screw terminal and a torsion spring terminal, a rigid electrical conductor can simply be inserted into the torsion spring terminal without the need for an actuating tool. To allow flexible conductors to also be connected to the torsion spring terminal and, if necessary, to allow a connected conductor – rigid or flexible – to be pulled out of the terminal again, an actuating opening for an actuating tool or an actuating push button is provided in the terminal housing according to a further preferred embodiment of the invention.Using an actuating tool inserted into the actuating opening, for example the tip of a screwdriver, or an actuating pusher inserted into the interior of the housing, the clamping leg is deflected against the spring force of the leg spring, thereby opening the clamping point so that a connected conductor can be pulled out of the leg spring or a flexible conductor can be inserted into the clamping point.

[0023] As stated at the outset, the terminal housing of the terminal block contains, in addition to a first conductor connection element and a second conductor connection element, a first busbar and a second busbar. These can, in principle, be two separate busbars, each assigned to only one conductor connection element. Preferably, however, the two busbars are connected to each other, so that together with a connecting section, they form a single metal part. This metal part can be easily stamped from a flat piece of metal and bent to achieve its final shape. The two busbars are preferably mirror images of each other, with the connecting section located midway between them.

[0024] To enable a conductor to be connected not only electrically to the terminal block or busbar, but also to electronic components, such as a printed circuit board (PCB) located within the electronics housing, the two busbars either each have their own contact section or share a common contact section. The contact section(s) can be designed as a terminal pin or a spring-loaded contact fork that can be inserted into corresponding contact holes in a PCB. Alternatively, a contact section can also be designed as a contact spring that, when the electrical terminal block is mounted, makes contact with a corresponding contact surface, such as a section of a busbar located within the electronics housing or a contact surface on a PCB.

[0025] The advantage of a pluggable contact section is evident in the fact that removing and inserting the electrical terminal into the recess of the electronic housing is particularly easy. If the two busbars are also arranged symmetrically to each other, then preferably both busbars have identical contact sections. In this case, the electronic housing or a circuit board located within the electronic housing also has two identical contact holes for the two contact sections, so that the electrical terminal can be inserted into the two contact holes with both contact sections, regardless of whether it is in its first or second position.

[0026] In detail, there are numerous possibilities for designing and further developing the electronic housing according to the invention. Reference is made to both the claims subordinate to claim 1 and the following description of exemplary embodiments in conjunction with the drawing. The drawing shows: Fig. 1. A perspective view of two electronic devices arranged on a mounting rail, each with electrical connection terminals according to the state of the art. Fig. 2 a part of an electronic housing according to the invention, with a terminal block in the first position, from the side and in perspective view, Fig. 3 the part of the electronics housing according to Fig. 2, with a terminal block in the second position, from the side and in perspective view, Fig. 4 the part of the electronics housing according to Fig. 2, with the cover open and the terminal block removed, in perspective view.

[0027] In the Fig. 2 and Fig. Figure 4 shows a part of a preferred embodiment of an electronic housing 1 according to the invention, namely only the upper, right part of an electronic housing 1 with an electrical terminal 2 arranged in a recess 3 in the electronic housing 1. The left part of the electronic housing 1 – not shown here – can, in principle, be designed in the same way as the right part of the electronic housing 1 shown, and thus, in particular, can also have a corresponding electrical terminal 2. However, the left part of the electronic housing 1 can also have a differently designed terminal or no terminal at all.

[0028] In Fig. Figure 1 shows two electronic devices 4', 4" each comprising an electronic housing 1', 1" and an electrical terminal block 2', 2" as known from the prior art. The two electronic housings 1', 1" each have a mounting foot 5 with which the electronic devices 4', 4" can be snapped onto a mounting rail 6. A corresponding mounting foot for snapping onto a mounting rail 6 can also be provided for the electronic housing 1 according to the invention. Fig. 2 - 4 are planned.

[0029] From the representation according to Fig. Figure 1 shows that the terminal blocks 2', 2" are located at the upper corners of the electronic housings 1', 1" relative to the mounting rail 6. Terminal block 2' is designed as a spring-loaded clamp, while terminal block 2" is designed as a screw terminal. Thus, the conductor connection elements of terminal block 2' are designed as spring-loaded clamps, while those of terminal block 2" are designed as screw terminals. It is also evident that, due to the different housing shapes of terminal blocks 2', 2", the electronic devices 4 also have different external dimensions. Therefore, two device variants must be provided for two functionally identical electronic devices 4, which results in increased documentation effort and increased inventory.

[0030] In the Fig. 2, Fig. 3 to Fig. In contrast, the electrical terminal 2 in the electronic housing 1 shown in Figure 4 has both a screw terminal and a spring-clamp terminal. For this purpose, a first conductor connection element 8 and a first busbar 9 are arranged in the terminal housing 7 of the terminal 2. A first conductor connection opening 10 is formed in the terminal housing 7, through which a conductor to be connected can be inserted and then electrically connected to the first busbar 9 by means of the first conductor connection element 8. Furthermore, the electrical terminal 2 has a second conductor connection element 11 and a second busbar 12. The first conductor connection element 8 is designed as a screw terminal and the second conductor connection element 11 as a spring-clamp terminal.In addition, a second conductor entry opening 13 is formed in the terminal housing 7 on the side opposite the first conductor entry opening 10, through which the second conductor connection element 11 is accessible.

[0031] As a comparison of Fig. 2 and Fig. As can be seen in section 3, the electrical terminal block 2 can be in a first position ( Fig. 2) or in a second position rotated by 180° ( Fig. 3) be inserted in the recess 3 in the electronic housing 1. In the first position of the terminal block 2, a conductor to be connected can be inserted into the first conductor connection opening 10, while in the second position of the terminal block 2, the second conductor entry opening 13 is accessible through the recess 3 in the electronic housing 1, so that a conductor can then be connected to the second conductor connection element 11. Even though the electronic housing 1 according to the invention, with its electrical terminal block 2, which is designed as a kind of "combination terminal", has two different types of conductor connection elements 8, 11 available, depending on the installation position of the terminal block 2 in the electronic housing 1, either only the first conductor connection element 8 or only the second conductor connection element 11 is accessible for connecting a conductor. The other conductor connection element 11, 8 is then accessible with its connection face, i.e.,with its conductor entry opening 13, 10 and the conductor connection element 11, 8 directed into the interior of the electronic housing 1 and thus not accessible for connecting a conductor in this position.

[0032] As can be seen in particular from the presentation according to Fig. As can be seen in Figure 4, a cover 14 is formed in the area of ​​the recess 3 on the electronics housing 1, so that the terminal block 2 can be easily removed from or inserted into the electronics housing 1 when the cover 14 is open. The cover 14 is integrally connected to the electronics housing 1 via a hinge 15, so that the cover 14 cannot be lost even when open and pivoted upwards. When the cover 14 is closed, it is locked to the electronics housing 1 by corresponding locking lugs or hooks, thus securing the terminal block 2 in its position within the electronics housing 1. To ensure easy access to the cover 14, the cover 14 and the hinge 15 are located on the top 16 of the electronics housing 1, so that the cover 14 must be pivoted upwards to open, as shown in Figure 4. Fig. 4 is shown.

[0033] In the Fig. 2, Fig. 3 to Fig. In the embodiment shown in Figure 4, the first conductor connection element 8, designed as a screw terminal, has an adjusting screw 17 and a pull sleeve 18. Furthermore, a section 19 of the first busbar 9 is arranged in the receiving space 20 of the pull sleeve 18, so that the first busbar 9 with the section 19 extends through the receiving space 20 of the pull sleeve 18. A conductor inserted through the first conductor entry opening 10 into the receiving space 20 of the pull sleeve 18 can thus be clamped by the pull sleeve 18 against the section 19 of the first busbar 9 when the pull sleeve 18 is moved upwards relative to the section 19 of the first busbar 9 by tightening the adjusting screw 17.

[0034] As a second conductor connection element 11, a torsion spring 21 is arranged in the terminal housing 7 of the terminal 2, the torsion spring 21 having a clamping leg 22 and a contact leg 23. The free end of the clamping leg 22 forms a clamping point 25 with a section 24 of the two busbars 12 for a conductor inserted through the second conductor entry opening 13. In addition to the clamping leg 22 and the contact leg 23, the torsion spring 21 also has a retaining leg 26, which connects to the contact leg 23 and is bent from it at a slight right angle. In particular, from Fig. 2b and Fig. As can be seen in Figure 3b, the retaining leg 26 has an opening through which the section 24 of the second busbar 12 extends. Since the retaining leg 26 itself is bent in an approximately L-shape, the free end of the retaining leg 26 rests on the section 24 of the busbar 12, so that the leg spring 21 is fixed to the busbar 12 via the end of the retaining leg 26 and the free end of the clamping leg 22.

[0035] To open the terminal 25, allowing either the insertion of a flexible conductor into the terminal 25 or the removal of a connected conductor from the terminal 25, an actuating opening 27 is provided in the terminal housing 7, in which an actuating push button 28 is arranged. When the actuating push button 28 is pushed or pressed into the interior of the terminal housing 7 from the upper position shown in the figures, the end 29 of the actuating push button 28 projecting into the terminal housing 7 deflects the clamping arm 22 against the spring force of the leg spring 21, thereby opening the terminal 25. A connected conductor can then be easily removed from the terminal 25.

[0036] To enable a conductor connected to terminal 2 to be electrically connected to the electronic components arranged in the electronic housing 2, for example, a printed circuit board 30, the two busbars 9, 12 each have a contact section 31, 32 designed as a spring-loaded contact fork. The contact sections 31, 32 are designed for insertion or pressing into corresponding contact holes 33, 34 in the printed circuit board 30 arranged in the electronic housing 1. Because the two busbars 9, 12 are designed and arranged in a mirror-symmetrical manner, the two contact sections 31, 32 can be inserted into the contact holes 33, 34 in the printed circuit board 30 regardless of whether the connector 2 is in its first position ( Fig. 2) or in its second position rotated 180° around the transverse axis ( Fig. 3). In principle, it is sufficient if an electrical connection with the inserted contact section 31, 32 is only made via the first, front contact hole 33, since an electrical conductor is only connected to the respective busbar 9, 12; in the arrangement according to Fig. 2 on the busbar 9 with the contact section 31 and in the arrangement according to Fig. 3 on the busbar 12 with the contact section 32.

[0037] In the illustrated embodiment, the two busbars 9, 12 are connected to each other via the connection area 35, so that the two busbars 9, 12 and the connection area 35 form a common metal part which can be easily produced from a flat metal strip by punching and bending.

Claims

[1] Electronic housing (1) with at least one electrical terminal (2) arranged in a recess (3) in the electronic housing (1), wherein the terminal (2) has a terminal housing (7), a first conductor connection element (8) and a first busbar (9), wherein a first conductor entry opening (10) is formed in the terminal housing (7) so that a conductor inserted through the first conductor entry opening (10) can be electrically connected to the first busbar (9) by means of the first conductor connection element (8), characterized by , that in the terminal housing (7) of the terminal block (2) a second conductor connection element (11) and a second busbar (12) are arranged, wherein the first conductor connection element (8) is designed as a screw connection and the second conductor connection element (11) as a spring clamp connection, that in the terminal housing (7) of the terminal block (2) a second conductor entry opening (13) is formed on the side opposite the first conductor entry opening (10), so that a conductor inserted through the second conductor entry opening (13) can be electrically connected to the second busbar (12) by means of the second conductor connection element (11), and that the terminal block (2) can be inserted in a first position or in a second position rotated by 180° in the recess (3) in the electronic housing (1), wherein a conductor to be connected can be inserted into the first conductor entry opening (10) in the first position of the terminal block (2) and into the second conductor entry opening (13) in the second position, wherein, depending on the installation position of the terminal block (2) in the electronic housing (1), either only the first conductor connection element (8) or only the second conductor connection element (11) is accessible for connecting the conductor, and wherein the respective other conductor connection element (8, 11) is directed with its conductor entry opening (10, 13) into the interior of the electronic housing (1). [2] Electronic enclosure (1) according to claim 1, characterized by , that in the area of ​​the recess (3) for the terminal block (2) a cover (14) is formed on the electronics housing (1) so that the terminal block (2) can be removed from the electronics housing (1) or inserted into the electronics housing (1) when the cover (14) is open. [3] Electronic enclosure (1) according to claim 2, characterized by, that the cover (14) is connected to the electronics housing (1) via a hinge (15), wherein the cover (14) and the hinge (15) are preferably arranged on the top (16) of the electronics housing (1). [4] Electronic housing (1) according to any one of claims 1 to 3, characterized by , that the first conductor connection element (8), designed as a screw connection, has an adjusting screw (17) and a pull sleeve (18) that can be actuated by means of the adjusting screw (17), wherein a section (19) of the first busbar (9) is arranged in the receiving space (20) of the pull sleeve (18), so that a conductor inserted through the first conductor entry opening (10) into the receiving space (20) can be clamped by the pull sleeve (18) against the section (19) of the first busbar (9). [5] Electronic enclosure (1) according to any one of claims 1 to 4, characterized by, that the second conductor connection element (11), designed as a spring-loaded clamping connection, has a loop-shaped tension spring which has a clamping leg with a recess and a contact leg, wherein a section of the second busbar (12) projects through the recess in the clamping leg of the tension spring, so that a conductor inserted through the second conductor entry opening (13) and the recess can be clamped by the clamping leg against the second busbar (12). [6] Electronic enclosure (1) according to any one of claims 1 to 4, characterized by , that the second conductor connection element (11), designed as a spring-loaded clamping connection, has a leg spring (21) with a clamping leg (22) and a contact leg (23), wherein the free end of the clamping leg (22) forms a clamping point (25) with a section (24) of the second busbar (12) for a conductor inserted through the second conductor entry opening (13). [7] Electronic enclosure (1) according to claim 6, characterized by , that an actuating opening (27) for an actuating tool or an actuating pusher (28) for opening the spring force clamp connection is formed in the terminal housing (7). [8] Electronic enclosure (1) according to any one of claims 1 to 7, characterized by that the two busbars (9, 12) either each have their own contact section (31, 32) or a common contact section, wherein the individual contact sections (31, 32) or the common contact section are preferably designed as spring-loaded contact forks or as connection pins. [9] Electronic enclosure (1) according to any one of claims 1 to 8, characterized by , that the first busbar (9) and the second busbar (12) are connected to each other and the two busbars (9, 12) together with a connecting section (35) form a common metal part. [10] Electronic enclosure (1) according to any one of claims 1 to 9, characterized by , that the two busbars (9, 12) are designed and arranged in a mirror-symmetrical manner relative to each other.

Images