CN117501548A - Connection terminal and associated electrical device - Google Patents

Connection terminal and associated electrical device Download PDF

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Publication number
CN117501548A
CN117501548A CN202280042909.6A CN202280042909A CN117501548A CN 117501548 A CN117501548 A CN 117501548A CN 202280042909 A CN202280042909 A CN 202280042909A CN 117501548 A CN117501548 A CN 117501548A
Authority
CN
China
Prior art keywords
connection terminal
button
actuation
channel
electrical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202280042909.6A
Other languages
Chinese (zh)
Inventor
埃吉迪奥·布鲁内蒂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hager Electro SAS
Original Assignee
Hager Electro SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hager Electro SAS filed Critical Hager Electro SAS
Publication of CN117501548A publication Critical patent/CN117501548A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/4828—Spring-activating arrangements mounted on or integrally formed with the spring housing
    • H01R4/48365—Spring-activating arrangements mounted on or integrally formed with the spring housing with integral release means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
    • H01R9/22—Bases, e.g. strip, block, panel
    • H01R9/24—Terminal blocks
    • H01R9/26—Clip-on terminal blocks for side-by-side rail- or strip-mounting

Landscapes

  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

The present invention relates to a connection terminal comprising: -an insulating housing (1); -an insertion channel (2); -a clamping spring (6) comprising a second clamping portion (8); -a conductive rod (9), in a connected state (E3) of the connection terminal, the connection terminal being configured to clamp the electrical conductor (5) between the conductive rod (9) and the second clamping portion (8); -a button (10), the button (10) being mounted for movement in the actuation channel (13) between a first position (P1) and a second position (P2), the button (10) being movable under an actuation force from the first position (P1) to the second position (P2); the connection terminal is characterized in that it comprises return means (16) separate from the clamping spring (6) and configured to allow the automatic return/movement of the push button (10) from the second position (P2) to the first position (P1) at least in the connected state (E) and without an actuation force.

Description

Connection terminal and associated electrical device
Technical Field
The present invention relates to the field of connection terminals and to the field of electrical units comprising such connection terminals.
Background
In order to electrically connect an electrical unit to an electrical conductor, a connection terminal is known from publication EP3619773A1, which connection terminal is equipped on the one hand with a push button mounted movable in an insulating housing within an actuation channel, and on the other hand with a clamping spring to allow connection of the electrical conductor by pressing (pin) a conductive rod. The button must be actuated from the first position to the second position, for example, using a screwdriver, to place the connection terminal in a connected state, thereby allowing the electrical conductor to be inserted into the electrical conductor insertion channel of the connection terminal. In this second position of the button, the button is pressed into the actuation channel. In the connection state of the connection terminals, in which the electrical conductor is connected to the conductive rod by pressing the electrical conductor by the clamping spring, the push button remains pressed into the actuation channel.
A disadvantage of this construction is that dust and/or various contaminants originating from the outside may be introduced into the connection terminal in case the push button is in the second position. Contaminants and/or particles may be introduced into the electrical unit incorporating the connection terminal, if applicable. This is particularly detrimental if the electrical unit is an electrical protection unit, such as a circuit breaker.
Another disadvantage of this construction is that the user cannot be assured of the connection of the electrical conductors in the connection terminals. In fact, there is a risk that the button blocks the travel of the clamping spring completely or partially. This may result in no or partial electrical contact being made between the clamping spring and the electrical conductor pressed against the conductor bar. There is then a risk that a partial contact is produced between the clamping spring and the conductor bar, which may lead to a temperature rise and thermal runaway. A user observing that the button is in the second position may incorrectly consider that electrical contact was made correctly, although this is not the case.
Disclosure of Invention
The object of the present invention is to overcome at least one of these drawbacks and to propose a solution that makes it possible to avoid the entry of contaminants and/or particles into the connection terminals and to ensure the formation of a connection of the electrical conductors in the connection terminals.
To this end, the invention relates to a connection terminal comprising at least:
an insulating housing is provided which is arranged on the outside of the housing,
at least one insertion channel comprising at least one insertion hole exposed on an outer wall of the insulating housing, the insertion hole being configured for inserting at least one electrical conductor into the insertion channel, the insertion channel extending along an insertion direction,
at least one clamping spring comprising a first electrical contact portion, a second clamping portion and a third intermediate portion connecting the first electrical contact portion to the second clamping portion,
at least one conductive rod electrically coupled to said first electrical contact portion,
in the connected state of the connection terminal, the connection terminal is configured to clamp the electrical conductor between the conductive rod and the second clamping portion,
at least one button comprising a first actuation end arranged to be actuated in accordance with an actuation force, and a second end substantially facing the second clamping portion,
at least one actuation channel comprising at least one input aperture exposed on said outer wall of the insulating housing, and said button being mounted so as to be translatable in the actuation channel along a direction of movement,
the button being mounted for movement in the actuation channel between a first position in which the actuation interface of the first actuation end is flush with the outer wall,
in the second position, the actuation interface is located in the actuation channel at a distance l1 from the input aperture, the button being movable from the first position to the second position under the action of an actuation force,
the connection terminal is characterized in that it comprises return means, different from the clamping spring, configured to allow the button to move/return automatically from the second position to the first position at least in the connected state and without the actuation force.
The invention also relates to an electrical unit comprising a connection terminal, characterized in that the connection terminal is a connection terminal according to the invention.
Drawings
The invention will be better understood from the following description, which refers to several preferred embodiments given as non-limiting examples and explained with reference to the attached schematic drawings, in which:
figure 1 shows a cross-section of a connection terminal according to the invention in an initial state and incorporated in an electrical unit according to the invention,
figure 2 shows a cross-section of a connection terminal according to the invention in a connected state and incorporated in the electrical unit according to the invention,
figure 3 shows a cross-section of a connection terminal according to the invention in a connected state and incorporated in the electrical unit according to the invention,
figure 4 shows an enlarged cross-sectional view of a part of the connection terminal according to the invention of figure 3,
figure 5 shows a perspective view of an electrical protection unit of the circuit breaker type with a moulded casing and comprising a connection terminal according to the invention according to a first variant of the invention,
figure 6 shows an enlarged perspective view of a portion of the electrical unit of figure 5,
figure 7 shows a perspective view of a portion of a connection terminal of the electrical unit of figure 5,
figure 8 shows a perspective view of a portion of a connection terminal of the electrical unit of figure 5,
figure 9 shows a perspective view of a portion of a connection terminal of the electrical unit of figure 5,
figure 10 shows a perspective view of an electrical protection unit of the circuit breaker type with a moulded casing and comprising a connection terminal according to the invention according to a second variant of the invention,
figure 11 shows an enlarged perspective view of a portion of the electrical unit of figure 10,
figure 12 shows a perspective view of a portion of a connection terminal of the electrical unit of figure 10,
figure 13 shows a perspective view of a portion of a connection terminal of the electrical unit of figure 10,
fig. 14 shows a perspective view of a portion of a connection terminal of the electrical unit of fig. 10.
Detailed Description
A connection terminal comprising at least:
the insulating housing 1 is provided with a plurality of insulating elements,
at least one insertion channel 2 comprising at least one insertion hole 3 exposed on an outer wall 4 of the insulating housing 1, said insertion hole 3 being configured for inserting at least one electrical conductor 5 into said insertion channel 2, the insertion channel 2 extending along an insertion direction D1,
at least one clamping spring 6 comprising a first electrical contact portion 7, a second clamping portion 8 and a third intermediate portion 39 joining the first electrical contact portion 7 to the second clamping portion 8,
at least one conductive bar (9), which is electrically coupled to said first electrical contact portion 7,
in the connection state E3 of the connection terminal, the connection terminal is configured to clamp the electrical conductor 5 between the conductive rod 9 and the second clamping portion 8,
at least one button 10, comprising a first actuation end 11 arranged to be actuated according to an actuation force F, and a second end 12 substantially facing the second clamping portion 8,
at least one actuation channel 13 comprising at least one input hole 14 exposed on said outer wall 4 of the insulating housing 1, and said button 10 being mounted so as to be translatable in the at least one actuation channel 13 along a direction of movement D2,
the button 10 is mounted so as to be movable in the actuation channel 13 between a first position P1, in which the actuation interface 15 of the first actuation end 11 is flush with the outer wall 4, and a second position P2, in which the actuation interface 15 is located in the actuation channel 13 at a distance l1 from the input aperture 14, the button 10 being movable from the first position P1 to the second position P2 under the action of an actuation force F.
According to the invention, the connection terminal is characterized in that it comprises return means 16, different from the clamping spring 6, which return means 16 are configured to allow the automatic movement/return of the push button 10 from the second position P2 to the first position P1, at least in the connection state E3 and without the actuation force F.
Advantageously, the return means 16 enable an automatic return of the push button 10 from the second position P2 to the first position P1 to be ensured at least in said connection state E3 of the connection terminals and in the absence of said actuation force F. In other words, in the case where the electrical conductor 5 is inserted into the insertion channel 2 and pressed against the conductive rod 9 by the second clamping portion 8 and the button 10 is released, it is ensured that the button 10 automatically returns from the second position P2 to the first position P1. Thus, when the button 10 is released and therefore no actuation force F acts on the button 10, then the button 10 automatically moves from the second position P2 to the first position P1.
Advantageously, the return means 16 also enable to ensure that the push button 10 is kept in the first position P1, at least in said connection state E3 of the connection terminals, when the push button 10 is not pressurized by said actuation force F. In other words, in the case where the electrical conductor 5 is inserted into the insertion channel 2 and pressed against the conductive rod 9 by the second clamping portion 8 and the button 10 is released, it is ensured that the button 10 is held in the first position P1. Thus, when the button 10 is released and thus no actuation force F acts on the button 10, the button 10 remains in the first position P1. Contact of the push button 10 with the clamping spring 6 in the connected state E3 is thus avoided.
In the first position P1 of the push button 10 and in the connection state E3 of the connection terminal, said actuation engagement surface 15 of the first actuation end 11 is thus flush with said outer wall 4 of the insulating housing 1, which makes it possible to ensure a sealing of the connection terminal even when the electrical conductor 5 is connected. Thus, contaminants and/or particles are advantageously avoided from entering the connection terminals in the connection state E3.
On the other hand, in the second position P2 and in the connection state E2 or E3 of the connection terminals, said actuating engagement surface 15 of the first actuating end 11 is at a distance l1 from said outer wall 4 of the insulating housing 1. The distance l1 is not zero. In this position, the seal is not guaranteed. By means of the invention, the time for the connection terminal to leave the push button 10 in the second position P2 is minimized.
Furthermore, in the connection state E3, the connection terminal is configured for the electrical conductor 5 to be advantageously positively connected to the conductive rod 9 by being directly clamped between the second clamping portion 8 and the conductive rod 9. The formation of the connection is ensured to the user, because in the first position P1 the button 10 does not interrupt the connection of the electrical conductor 5, since the button is at a distance from the clamping spring 6. Thus, when the user observes that the connection terminal comprises the electrical conductor 5 in the insertion channel 2 and that the push button 10 is in the first position P1, an effective and complete electrical connection of the connection terminal in the connection state E3 and of the electrical conductor 5 is ensured.
Fig. 1 shows an initial state E1 of the connection terminal, in which the button 10 is in the first position P1. In this case the second end 12 of the button 10 is at a distance from the second clamping part 8 of the clamping spring 6 and does not exert any tension on the second clamping part, and the free end 24 of the second clamping part 8 is pressed against the conductor bar 9. Therefore, in this initial state E1, there is no contact between the clamp spring 6 and the button 10. Furthermore, the clamping spring 6 is permanently tensioned (strain) to the conductor bar 9.
Fig. 2 shows an alternative connection state E2 of the connection terminals, in which state the push button 10 is in the second position P2 after actuation. In this case, the second end 12 of the push button 10 is pressed against the tensioned second clamping portion 8 and the free end 24 of the second clamping portion 8 is at a distance from the conductive rod 9 to form a channel 25 for the end 26 of the electrical conductor 5. In this connection state E2, the electrical conductor 5 can be inserted between the conductive rod 9 and the second clamping portion 8 irrespective of the type of electrical conductor, that is to say irrespective of a flexible, semi-rigid or rigid electrical conductor.
Fig. 3 and 4 show the connection state E3 of the connection terminals, in which state the push button 10 has been returned to the first position P1 by means of the return device 16, which is the subject of the invention. In this case, the second end 12 of the button 10 is at a distance from the second clamping part 8 and does not exert any tension on the second clamping part, and said free end 24 of the second clamping part 8 is capable of pressing or squeezing the electrical conductor 5 against the conductive rod 9.
The transition from the initial state E1 of the connection terminal to the connection state E2 is accomplished by actuating the button 10 under the action of the actuation force F. In fact, in this case, the second end 12 of the push button 10 is pressed against the second clamping portion 8, whereupon the second clamping portion 8 is tensioned, which causes the second clamping portion 8 to move towards the first electrical contact portion 7 and form said channel 25 for the electrical conductor 5.
The transition from the connection state E2 to the connection state E3 is accomplished by inserting the electrical conductor 5 into the insertion channel 2 and then consecutively by releasing the push button 10. Once the electrical conductor 5 is introduced into the channel 25, the button 10 can be released, which will result in the electrical conductor 5 being clamped between the conductive rod 9 and the second clamping portion 8. Advantageously, then, according to the invention, the push button 10 is automatically returned to the first position P1 under the action of the return means 16.
Alternatively, the transition from the initial state E1 to the connection state E3 may be accomplished by inserting the rigid electrical conductor 5 into the insertion channel 2 without manipulating the button 10. In this case, there is no intermediate connection state E2 caused by the actuation of the button 10. The button 10 is held in the first position P1.
The actuation force F may be applied by a user using a tool, for example using a screwdriver.
The electrical conductor 5 may be rigid, semi-rigid or flexible. The electrical conductor 5 may be constituted by an electrical cable.
The rigid or semi-rigid electrical conductor 5 is capable of exerting an insertion force on the second clamping portion 8 of the clamping spring 6 sufficient to allow the second clamping portion 8 to move towards the first electrical contact portion 7.
The flexible electrical conductor 5 cannot exert an insertion force on the second clamping portion 8 of the clamping spring 6 sufficient to allow the second clamping portion 8 to move towards the first electrical contact portion 7. An actuation force F must be applied to the button 10 to form the channel 25. In this case, from the first position P1 to the second position P2, the second end 12 of the button 10 presses against the second clamping portion 8 to allow the second clamping portion 8 to move towards the first electrical contact portion 7.
Thus, the flexible electrical conductor 5 can be inserted between the conductive rod 9 and the second clamping portion 8 only when the button 10 is in the second position P2.
On the other hand, the insertion of the rigid or semi-rigid electrical conductor 5 into the connection terminal does not necessarily require actuation of the button 10. In this case, the button 10 may continue to remain in the first position P1. Thus, the sealing of the connection terminal according to the present invention is maximum and thus optimal.
Preferably, in said connection state E3 and in the first position P1 of the push button 10, the second end 12 of the push button 10 is at a distance from the second clamping portion 8.
Advantageously, in the connected state E3 and in the first position P1, the second end 12 of the push button 10 does not interfere with the clamping spring 6 and, in particular, with its second clamping portion 8.
In contrast, in said connected state E3 and in the second position P2 of the push button 10, the second end 12 of the push button 10 presses against the second clamping portion 8 and tightens the second clamping portion 8.
Preferably, the return means 16 are arranged to store mechanical energy when switching from the first position P1 to the second position P2 and to release said mechanical energy when switching from the second position P2 to the first position P1.
Advantageously, the return means 16 allow the button 10 to return automatically from the second position P2 to the first position P1 when the actuation force F is released.
Preferably, the return device 16 is tensioned in the first position P1 and the return device 16 is tensioned more in the second position P2 than in the first position P1.
Advantageously, the return means 16 enable to keep the push button 10 in the first position P1 without the actuation force F being pressurized. In fact, in this case, only the return means 16 exert a pressure on the push button 10. Furthermore, when the actuation force F is released, the return means 16 allow the button 10 to return automatically from the second position P2 to the first position P1.
Preferably, the push button 10 comprises a body 17 between said first actuating end 11 and said second end 12, and the return means 16 are joined on the one hand to the insulating housing 1 or to the conductive rod 9 and on the other hand to the body 17 or are pressed onto the body 17 by protruding into said actuating channel 13.
Preferably, the return means 16 comprise at least one leaf spring comprising a first end 18 joined to the insulating housing 1 or to the conductive rod 9 and a second end 20 joined to the body 17 or pressed against the body 17.
For example, the body 17 may include a receiving area 27 for the second end 20 of the leaf spring, the second end 20 of the leaf spring exerting a tension on the receiving area. According to one possibility, the second end 20 of the leaf spring rests on a receiving area 27.
Alternatively, the return device 16 may be formed by two leaf springs.
Preferably, the connection terminal further comprises a contact 22 made of electrically conductive material, which contact 22 is located in a control channel 23 arranged beside the actuation channel 13, the contact 22 being electrically coupled to said conductive rod 9 by means of an electrically conductive means 21.
Advantageously, the contacts 22 enable checking whether there is a voltage outside the insulating housing 1 beside the push button 10. The user simply introduces the voltage measuring instrument into the control channel 23 to the contact 22 on the one hand and into the reference point, for example between the neutral pole (neutral pole) and the phase pole (phase pole), on the other hand. In practice, when the conductive rod 9 is connected to the electric network (electrical network), then the conductive rod 9, the conductive means 21 and the contacts 22 are at the same electric potential.
For example, the conductive means 21 takes the form of a flat conductive member 28 comprising at a first end 29 attachment means 30 attached to the conductive rod 9, for example in the form of a clamp made of conductive material. The planar member 28 includes a second end 31 opposite the first end 29. The flat member 28 extends in a longitudinal direction, preferably parallel to the moving direction D2. Preferably, the electrically conductive means 21 are arranged in a compartment of the insulating housing 1, which is located beside the actuation channel 13 and is prolonged by the control channel 23.
Preferably, the return means 16 made of electrically conductive material is electrically coupled to said conductive rod 9 by means of electrically conductive means 21, and the return means 16 is mounted on said conductive rod 9 via electrically conductive means 21.
Advantageously, the conductive means 21 on the one hand enable to electrically couple the return means 16 to the conductive bars 9, and to mechanically couple the return means 16 to the conductive bars 9 instead of mechanically coupling them to the insulating housing 1.
In this case, the second end 31 of the planar member 28 may be electrically and mechanically coupled to the first end 18 of the leaf spring.
Preferably, the return means 16, the conductive means 21 and the contacts 22 form a part made of a single piece.
Advantageously, this configuration makes it possible to optimize the volume inside the insulating housing 1 and to aid industrialization. Furthermore, this configuration also makes it possible to limit the number of components and share the component for different types of connection terminals.
In this case, in the aforementioned electrically conductive means 21, the second end 31 of the flat part 28 is directly prolonged by return means 16 in the form of a leaf spring extending into the actuation channel 13. The second end 20 of the leaf spring is joined to the body 17 of the push button 10. For example in the receiving area 27 where tension is applied at the second end 20 of the leaf spring. Also in this case, in the aforementioned conductive means 21, the second end 31 is directly prolonged by the contact 22 extending in the control channel 23. The contacts 22 may for example take the form of tongues.
As shown in fig. 5 to 9, the connection terminal may include a phase conductive rod 9a and a neutral conductive rod 9b. The connection terminal may include a first insertion passage 2a of the phase conductor 5, a first button 10a mounted to be movable in a first actuation passage 13a, and a first clamping spring 6a. The connection terminal may further comprise a second insertion channel 2b of the neutral conductor 5, a second button 10b mounted movable in a second actuation channel 13b, and a second clamping spring 6b. In this case, each button 10a, 10b is associated with its dedicated return means 16a, 16 b. In other words, the connection terminal comprises a first return means 16a, different from the first clamping spring 6a, and a second return means 16b, different from the second clamping spring 6b, the first return means 16a being configured to allow the first button 10a to move/return automatically from the second position P2 to the first position P1 at least in said connection state E3 and without said actuating force F, the second return means 16b being configured to allow the second button 10b to move/return automatically from the second position P2 to the first position P1 at least in said connection state E3 and without said actuating force F.
This configuration is particularly suitable for connecting the phase conductor 5 to the phase conductor bars 9a and the neutral conductor 5 to the neutral conductor bars 9b, each having a maximum cross section of 6mm 2 . In this case, the aforementioned passage 25 is at least 6mm 2 . Preferably, the channels 25 allow a section of between 0.75mm 2 To 6mm 2 The connection of the electrical conductors 5 therebetween.
In this configuration, illustrated in figures 5 to 9, the first return means 16a made of electrically conductive material are electrically and mechanically linked to said conductive rod 9a by means of first electrically conductive means 21a and to a first contact 22a made of electrically conductive material, which is located in a first control channel 23a beside the first actuation end 11 of the first button 10 a. In addition, the second return means 16b made of electrically conductive material are electrically coupled to said neutral conductor bar 9b and to a second contact 22b made of electrically conductive material, located in a second control channel 23b beside the first actuation end 11 of the second button 10b, by means of a second electrically conductive means 21 b.
Advantageously, in this case, the checking for the presence of a voltage is done by means of a voltage measurement between the first contact 22a and the second contact 22 b.
As shown in fig. 10 to 14, instead of the first insertion passage 2a for the phase electrical conductor 5 and the second insertion passage 2b for the neutral electrical conductor 5 described above, the connection terminal may include the first insertion passage 2a for the phase electrical conductor 5 and the second insertion passage 2b for the phase electrical conductor 5, the third insertion passage 2c for the neutral electrical conductor 5, and the fourth insertion passage 2d for the neutral electrical conductor 5. The connection terminal is then equipped with a first button 10a associated with the first clamping spring 6a and a second button 10b associated with the second clamping spring 6b, both buttons being mounted so as to be movable in the first actuation channel 13 a. In this case, each pair of first/second buttons 10a, 10b is associated with a first return means 16a (for example, a leaf spring). Furthermore, the connection terminal is then equipped with a third button 10c associated with a third clamping spring 6c and a fourth button 10d associated with a fourth clamping spring 6d, both buttons being mounted so as to be movable in the second actuation channel 13 b. In this case, each pair of third/fourth buttons 10c, 10d is associated with a second return means 16b (for example, a leaf spring).
This configuration is particularly suitable for connecting two phase conductors 5 to a phase conductor bar 9a and two neutral conductors 5 to a neutral conductor bar 9b, each having a maximum cross section of 4mm 2 . In this case, the aforementioned passage 25 is at least 4mm 2 . Preferably, the channels 25 allow a section of between 0.75mm 2 To 4mm 2 The connection of the electrical conductors 5 therebetween.
Preferably, the connection terminal comprises blocking means X which prevent the push button 10 from exiting from the actuation channel 13, that is to say prevent the push button 10 from exceeding the outer wall 4. For example, the blocking means 32 may consist of a stop on the insulating housing 1 or on the conductor bar 9.
The insulating housing 1 and/or the push button 10 are preferably made of an insulating material, for example of plastic.
The conductive rod 9 is preferably made of copper with or without surface treatment.
The invention also relates to an electrical unit comprising a connection terminal, characterized in that the connection terminal is a connection terminal according to the invention as described above.
Advantageously, the connection terminal according to the invention enables an easy connection of the electrical units 100, 101 to the electrical grid. Furthermore, when the connection terminals are incorporated into the electrical units 100, 101, contaminants and/or particles are advantageously avoided from entering the electrical units 100, 101. This is particularly advantageous when the electrical unit 100, 101 is an electrical protection unit as described below, as fouling of components is thereby avoided.
The electrical unit is preferably a protection unit, such as a circuit breaker (preferably modular and/or with a Molded Case (MCB) as shown in fig. 5 to 14) or a differential circuit breaker (preferably modular and/or with a molded case (RCBO)) or a connection terminal block.
According to an example not shown, the electrical protection unit may comprise a single electrical terminal for a single pole, and in this case the connection terminal may comprise a single insertion channel 2 and a single button 10 for the electrical conductor 5.
Alternatively, according to another example, not shown, the electrical protection unit may comprise a single electrical terminal for a single pole, and in this case the connection terminal may comprise two insertion channels for the electrical conductors 5 associated with a single button 10.
In the two previous examples, the electrical terminals are electrically connected and preferably directly connected to the conductive bars 9 of the connection terminals.
According to a first variant of the invention, illustrated in fig. 5 to 9, the electrical protection unit 100 may comprise a phase electrical terminal for the phase pole and a neutral electrical terminal for the neutral pole, and in this case the connection terminals comprise a first insertion channel 2a for the phase electrical conductor 5 associated with the first button 10a and a second insertion channel 2b for the neutral electrical conductor 5 associated with the second button 10 b.
According to a second variant of the invention, illustrated in fig. 10 to 14, the electrical protection unit 101 may comprise a phase electrical terminal for the phase pole and a neutral electrical terminal for the neutral pole, and in this case the connection terminals comprise a first insertion channel 2a for the first phase electrical conductor 5 and a second insertion channel 2b for the second phase electrical conductor 5 associated with a pair of first and second buttons 10a, 10b, and a third insertion channel 2c for the third neutral electrical conductor 5 and a fourth insertion channel 2d for the fourth neutral electrical conductor 5 associated with a pair of third and fourth buttons 10c, 10 d.
In the two previous examples, the phase electrical terminals are electrically and preferably directly connected to the phase conductive rods 9a, and the neutral electrical terminals are electrically and preferably directly connected to the neutral conductive rods 9b.
It is obvious that the invention is not limited to the embodiments described and represented in the drawings. Modifications may still be made without in any way departing from the scope of protection of the invention, in particular from the point of view of the construction of the various elements or by substitution of technical equivalents.

Claims (10)

1. A connection terminal comprising at least:
an insulating housing (1),
at least one insertion channel (2) comprising at least one insertion hole (3) exposed on an outer wall (4) of the insulating housing (1), the insertion hole (3) being configured for inserting at least one electrical conductor (5) into the insertion channel (2), the insertion channel (2) extending along an insertion direction (D1),
at least one clamping spring (6) comprising a first electrical contact portion (7), a second clamping portion (8) and a third intermediate portion (39) joining the first electrical contact portion (7) to the second clamping portion (8),
at least one conductive rod (9) electrically coupled to said first electrical contact portion (7),
in the connected state (E3) of the connection terminal, the connection terminal is configured to clamp the electrical conductor (5) between the conductive rod (9) and the second clamping portion (8),
at least one button (10) comprising a first actuation end (11) arranged to be actuated according to an actuation force (F), and a second end (12) substantially facing said second clamping portion (8),
at least one actuation channel (13) comprising at least one input hole (14) exposed on the outer wall (4) of the insulating housing (1), and the button (10) being mounted so as to be translatable in the actuation channel along a direction of movement (D2),
the button (10) is mounted so as to be movable in the actuation channel (13) between a first position (P1) in which the actuation interface (15) of the first actuation end (11) is flush with the outer wall (4) and a second position (P2) in which the actuation interface (15) is located in the actuation channel (13) at a distance l1 from the input aperture (14), the button (10) being movable from the first position (P1) to the second position (P2) under the action of the actuation force (F),
the connection terminal is characterized in that it comprises return means (16) different from the clamping spring (6), configured to allow the automatic movement/return of the push button (10) from the second position (P2) to the first position (P1), at least in the connection state (E3) and in the absence of the actuation force (F).
2. The connection terminal according to claim 1, characterized in that in the connected state (E3) and in the first position (P1) of the button (10), the second end (12) of the button (10) is at a distance from the second clamping portion (8).
3. Connection terminal according to any of claims 1 and 2, characterized in that the return means (16) are arranged to store mechanical energy when switching from the first position (P1) to the second position (P2) and to release the mechanical energy when switching from the second position (P2) to the first position (P1).
4. A connection terminal according to any one of claims 1 to 3, characterized in that the return means (16) are tensioned in the first position (P1) and the return means (16) are tensioned more in the second position (P2) than in the first position (P1).
5. Connection terminal according to any of claims 1 to 4, characterized in that the button (10) comprises a body (17) between the first actuating end (11) and the second end (12), and in that the return means (16) are joined to the insulating housing (1) or the conductive rod (9) on the one hand and to the body (17) or pressed onto the body (17) by protruding into the actuating channel (13) on the other hand.
6. Connection terminal according to any of claims 1 to 5, characterized in that the return means (16) comprise at least one leaf spring comprising a first end (18) joined to the insulating housing (1) or to the conductive rod (9) and a second end (20) joined to the body (17) or pressed against the body (17).
7. Connection terminal according to any of claims 1 to 6, characterized in that it further comprises a contact (22) made of electrically conductive material, said contact being located in a control channel (23) arranged beside the actuation channel (13), said contact (22) being electrically coupled to the conductive rod (9) by means of an electrically conductive means (21).
8. Connection terminal according to claim 7, characterized in that the return means (16) made of electrically conductive material is electrically coupled to the conductive rod (9) by means of an electrically conductive means (21), and in that the return means (16) are mounted on the conductive rod (9) via the electrically conductive means (21).
9. Connection terminal according to any of claims 7 and 8, characterized in that the return means (16), the conductive means (21) and the contact (22) form a part made of one piece.
10. An electrical unit comprising a connection terminal, characterized in that the connection terminal is according to any one of claims 1 to 9.
CN202280042909.6A 2021-06-30 2022-06-27 Connection terminal and associated electrical device Pending CN117501548A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FRFR2107072 2021-06-30
FR2107072A FR3124900B1 (en) 2021-06-30 2021-06-30 Connection terminal and associated electrical device
PCT/EP2022/067551 WO2023274949A1 (en) 2021-06-30 2022-06-27 Connection terminal and associated electrical apparatus

Publications (1)

Publication Number Publication Date
CN117501548A true CN117501548A (en) 2024-02-02

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ID=77317128

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202280042909.6A Pending CN117501548A (en) 2021-06-30 2022-06-27 Connection terminal and associated electrical device

Country Status (5)

Country Link
EP (1) EP4364245A1 (en)
CN (1) CN117501548A (en)
AU (1) AU2022305605A1 (en)
FR (1) FR3124900B1 (en)
WO (1) WO2023274949A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2875944B1 (en) * 2004-09-27 2006-12-15 Legrand Sa APPARATUS COMPRISING A CONNECTION BLOCK
EP1914839B1 (en) * 2006-10-21 2010-12-08 Abb Ag Installation switching device
ITMO20140344A1 (en) * 2014-11-25 2016-05-25 Techno S R L GROUP FOR THE ELECTRICAL INTERCONNECTION OF ELECTRIC CABLES
DE102017109694B4 (en) 2017-05-05 2022-10-06 Wago Verwaltungsgesellschaft Mbh terminal block
EP3457497A1 (en) * 2017-09-15 2019-03-20 ABB Schweiz AG Actuation device to open push-in terminals for contactors

Also Published As

Publication number Publication date
FR3124900B1 (en) 2023-12-08
FR3124900A1 (en) 2023-01-06
EP4364245A1 (en) 2024-05-08
WO2023274949A1 (en) 2023-01-05
AU2022305605A1 (en) 2023-12-21

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