CN114122752A - Clamping device for connecting electrical conductors - Google Patents

Clamping device for connecting electrical conductors Download PDF

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Publication number
CN114122752A
CN114122752A CN202110686864.3A CN202110686864A CN114122752A CN 114122752 A CN114122752 A CN 114122752A CN 202110686864 A CN202110686864 A CN 202110686864A CN 114122752 A CN114122752 A CN 114122752A
Authority
CN
China
Prior art keywords
clamping
leg
clamping device
housing part
section
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
CN202110686864.3A
Other languages
Chinese (zh)
Inventor
马赛尔·维特克
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.)
Phoenix Contact GmbH and Co KG
Original Assignee
Phoenix Contact GmbH and Co KG
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 Phoenix Contact GmbH and Co KG filed Critical Phoenix Contact GmbH and Co KG
Publication of CN114122752A publication Critical patent/CN114122752A/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
    • H01R4/483—Pivoting arrangements, e.g. lever pushing on the spring
    • 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
    • H01R13/02—Contact members
    • H01R13/04—Pins or blades for co-operation with sockets
    • 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
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/4819—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end the spring shape allowing insertion of the conductor end when the spring is unbiased
    • H01R4/4821—Single-blade spring
    • 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
    • H01R4/4835—Mechanically bistable arrangements, e.g. locked by the housing when the spring is biased

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

The invention relates to a clamping device (1) for connecting an electrical conductor (2), comprising a housing part (11) having a plug-in opening (10) for inserting the electrical conductor (2). A spring element (14) is arranged on the housing part (11) and has a clamping leg (142) for acting on the electrical conductor (2) inserted into the plug-in opening (10) and a supporting leg (141) for supporting the spring element (14) relative to the housing part (11). The operating element (12) serves to adjust the clamping leg (142) between different positions relative to the supporting leg (141). The spring element (14) has a tensioning element (144) which is formed on the clamping leg (142) or the supporting leg (141) and which can be elastically deformed when the clamping leg (142) is adjusted relative to the supporting leg (141) in order to generate an elastic tensioning force between the clamping leg (142) and the supporting leg (141).

Description

Clamping device for connecting electrical conductors
Technical Field
The present invention relates to a clamping device for connecting electrical conductors according to the preamble of claim 1.
Background
A clamping device of this type comprises a housing with a plug opening for inserting an electrical conductor. A spring element is arranged on the housing and has a clamping leg for acting on the electrical conductor inserted into the plug-in opening and a supporting leg for supporting the spring element relative to the housing part. For example, an operating element which can be adjusted manually or by the user in the case of a tool relative to the housing part serves to adjust the clamping leg between different positions relative to the supporting leg.
Such a clamping device makes it possible to connect electrical conductors in a simple, comfortable, tool-free manner if necessary. Such a clamping device can be used, for example, as a block terminal for potential distribution. However, the clamping device may also be used in other electrical or electronic equipment, such as junction boxes and the like.
In a clamping device of the type mentioned, the spring element can be operated and adjusted between different positions by actuating the operating element. For this purpose, the user can act on the actuating element and thereby adjust the actuating element between a clamping position, in which the electrical conductor inserted into the plug opening is clamped and can thus be mechanically locked and electrically contacted, and a release position, in which the conductor is inserted into the plug opening without force, or-if the conductor has already been inserted into the plug opening-can be removed again from the plug opening.
In the clamping device known from DE 102015104625 a1, the operating element is pivotably supported on the housing about an axis and can be operated in order in this way to adjust the clamping legs of the spring element between different positions.
In the clamping device known from DE 102016108826 a1, an actuating element in the form of a lever is pivotably supported on the housing and is connected to a leg of the spring element, so that the leg is adjusted when the actuating element is adjusted.
In such a clamping device, the clamping legs in their clamping position should provide a sufficient, defined clamping force when the electrical conductor is connected, in order to ensure a reliable electrical contact of the electrical conductor in the connected position and, in addition, a secure mechanical locking. The spring element is supported on the housing part via the support leg, wherein the clamping leg can be adjusted elastically relative to the support leg by actuating the actuating element. Due to the elasticity of the spring element, the clamping legs act under elastic pretension on the electrical conductor inserted on the clamping device in order to electrically contact and mechanically lock the electrical conductor in this way.
Disclosure of Invention
The object of the invention is to provide a clamping device which, while being compact, can be constructed simply and inexpensively and can be operated comfortably and reliably and which can provide a reliable clamping force when an electrical conductor is inserted.
This object is achieved by a body having the features of claim 1.
The spring element has a tensioning element which is formed on the clamping leg or the supporting leg and which can be elastically deformed when the clamping leg is adjusted relative to the supporting leg, in order to bring about an elastic tensioning force between the clamping leg and the supporting leg.
The clamping leg is connected to the supporting leg, for example, by a curved connecting section. The clamping leg can be elastically deflected in this case, in particular when bent over the connecting section, toward the supporting leg, for example when using an actuating element, in order to move the clamping leg from the closed clamping position into the open release position in which the electrical conductor can be inserted essentially without force into the plug-in opening of the housing part.
In general, when the electrical line is connected, a clamping force is provided by the elasticity in the region of the connecting section, so that when the electrical conductor is connected, the clamping legs are deflected out of the elastic position and act with an elastic prestress on the conductor in order to electrically contact and mechanically lock the conductor. In order to increase the clamping force of the spring element when the electrical conductor is connected, the spring element has a tensioning element which additionally acts between the clamping leg and the supporting leg in order to provide an auxiliary elastic tensioning force between the clamping leg and the supporting leg when the clamping leg is offset relative to the supporting leg. If the clamping leg is, for example, offset from the (at least maximally) unloaded position into the release position, the tensioning element is elastically tensioned between the clamping leg and the supporting leg and thereby provides an additional tensioning force between the clamping leg and the supporting leg.
By providing such a tensioning element on the clamping or supporting leg, the clamping force when the clamping device is closed can be increased. For example, in this way it is possible to connectHas an electrical conductor of, for example, 1.5mm2、2.5mm2、4mm2Or a nominal conductor cross section of 6mm, for example, a clamping force of more than 15N, for example more than 20N, is reliably provided.
The clamping leg and the supporting leg are designed in one piece with one another and are connected to one another by a particularly curved connecting section, so that the clamping leg can be elastically deflected relative to the supporting leg in the event of elastic deformation at the connecting section. The spring element can be designed, for example, as a stamped and bent part made of spring steel.
The tensioning element can be integrally formed with the clamping leg or the supporting leg or can be provided as a separate element on the clamping leg or the supporting leg.
In one embodiment, the tensioning element is formed as a web on the clamping leg or supporting leg. The tensioning element can be connected in this way with one end to the clamping or supporting leg and with the other end projecting from the clamping or supporting leg in the direction of the respective other leg. When the clamping leg is offset relative to the supporting leg, the tensioning element acts between the clamping leg and the supporting leg in such a way and is adjusted relative to the leg on which the tensioning element is arranged in such a way that the tensioning element provides an additional tensioning force between the clamping leg and the supporting leg.
The tensioning elements formed as webs can be cut out from the clamping legs or the supporting legs, for example. Thus, indentations complementary to the tensioning elements are formed in the clamping legs and the supporting legs, wherein the tensioning elements are bent relative to the clamping legs or the supporting legs and point with the free ends in the direction of the respective other leg.
In one embodiment, the tensioning element does not always act between the clamping leg and the supporting leg, but only when the clamping leg is moved from an (at least maximally) unloaded position (corresponding, for example, to a closed position of the spring element when the clamping device is empty, i.e., not equipped with a conductor) by a certain distance in the direction of the supporting leg and thus approaches the supporting leg. For example, the clamping legs can be adjusted between a release position, in which the electrical conductor can be inserted into the plug opening, and a clamping position for acting on the electrical conductor inserted into the plug opening. The tensioning element is preferably designed to generate an elastic tensioning force between the clamping leg and the supporting leg, in particular in the release position. For example, when the clamping leg is in the (maximally) unloaded position, for example when the clamping device is closed but no electrical conductor is inserted into the plug-in opening, the tensioning element acts between the clamping leg and the support leg without applying a force and thus without elastic tensioning, while when the clamping leg is adjusted out of the unloaded position, the tensioning element is deformed from a certain position of the clamping leg on approaching the support leg, so that an additional tensioning force is provided between the clamping leg and the support leg by the tensioning element. In the release position, the tensioning force provided by the tensioning element is at a maximum here, wherein the tensioning element serves to provide an additional tensioning force even in the clamping position when the electrical conductor is connected and when the clamping legs act on the connected electrical conductor, and thus the clamping force of the clamping device for the clamping legs acting on the electrical conductor is increased.
In one embodiment, the tensioning element is formed on the supporting leg, for example as a web projecting towards the clamping leg. However, the tensioning element may alternatively be formed on the clamping leg. However, it is also conceivable and possible to provide tensioning elements, for example in the form of webs, both on the support legs and also on the clamping legs.
In one embodiment, the actuating element is formed by a lever element which is pivotable relative to the housing part and has an actuating section for the clamping leg acting on the spring element and a lever head. In order to adjust the clamping leg relative to the housing part, the actuating element can be pivoted in the pivoting direction between a first pivot position and a second pivot position in order to adjust the clamping leg in this way between a clamping position (in which the clamping leg can act clampingly on an electrical conductor inserted into the plug opening) and a release position (in which the receiving space inside the housing part is released for inserting or releasing the electrical conductor).
In one embodiment, the clamping device has a guide device arranged on the housing part, which guide device forms a guide surface extending in the pivoting direction. The operating element has a sliding guide section formed on the lever head, which is slidingly guided on a guide surface of the guide means, such that the sliding guide section moves on the guide surface in the pivoting direction when the operating element is pivoted between the first and the second pivoting position.
In this embodiment, the actuating element is guided on the guide surface of the guide device by means of the lever head. The guide surface thus defines a movement track for the lever head and thus a pivoting movement of the operating element. When the actuating element is adjusted, the lever head is moved slidingly along the guide surface, whereby the actuating element is pivoted and the actuating section is adjusted to adjust the clamping leg of the spring element.
By guiding the operating element at the lever head via the guide surface of the guide device, it is possible to dispense with the pivoting support of the operating element about the support axis. The movement path of the actuating element is predetermined by the guide surface of the guide device, so that the actuating element moves while slidingly guiding the lever head during pivoting. Since the actuating element does not have to have a bearing axis, which is supported on the housing part, the clamping device can be constructed in a compact manner without the actuating element, for example, projecting into a receiving space, in which an electrical conductor inserted into the plug-in opening is received.
By means of the lever head, for example, a (tool-free) operation by the user can be achieved. The user can, for example, hold the lever head in order to adjust the operating element relative to the housing part between the first pivot position and the second pivot position.
In one embodiment, the operating element can be pivoted about a pivot axis relative to the housing part. The lever head is arranged radially outside the actuating section relative to the pivot axis and is thus spaced radially apart from the actuating section. The lever head can be formed, for example, on the end of the actuating element facing away from the radially inner actuating section.
In one embodiment, the guide surface, on which the sliding guide section of the lever head is guided, is curved about the pivot axis. The guide surface therefore presets a movement path about the pivot axis, along which the lever head moves with sliding guidance via the sliding guide section when the operating element is adjusted.
The lever head can be arranged, for example, on the side of the guide surface that points away from the actuating section. The guide surface can be formed, for example, on an outer wall section of the housing part and directed outward. The lever head can be arranged, for example, outside the housing part, so that the lever head can be easily and comfortably operated by a user and moved for adjusting the clamping leg of the spring element.
In one embodiment, the lever head has a latching means for latching with a corresponding latching means formed on the guide means in the first or second pivot position. The operating element can thus be latched in the first or second pivot position in such a way that the latching means of the lever head comes into (form-fitting) engagement with corresponding latching means of the guide means. The detent connection can be releasable in that the user exerts a force on the lever head which exceeds a predetermined release force, so that the actuating element is held in the corresponding pivot position in a detent manner, but the detent connection can be easily released by the user for adjusting the actuating element and thus the clamping leg of the spring element.
In one embodiment, the actuating section of the actuating element is accommodated in an accommodating pocket formed on the clamping leg. The actuating section is thereby moved in the receiving pocket during adjustment of the actuating element, and acts in a defined manner on the clamping leg. The receiving pocket can be formed, for example, by a curved, for example V-shaped section of the clamping leg, on which the clamping leg is bent, for example, by an angle of between 60 ° and 120 °, for example approximately 90 °, and into which the actuating section engages, so that the actuating section is rotatable in the receiving pocket when the actuating element is pivoted.
In one embodiment, the actuating element has an end section remote from the lever head, which is supported on the housing section of the housing part. The end section can, for example, be formed on a radially inner end of the actuating element and provides a support relative to the housing part, but the end section does not necessarily have to provide a pivot bearing.
In one embodiment, contact elements, which are also referred to as bus bars and are intended to be brought into contact with the electrical conductors inserted into the plug openings, are arranged on the housing part. If the electrical conductor is inserted into the plug opening, the clamping legs of the spring element act on the electrical conductor in the clamping position in order to clamp it with the contact element, so that the electrical conductor is mechanically locked in the plug opening and is also in electrical contact with the contact element. The contact elements can provide, for example, a potential distribution between the different terminals of the clamping device. Additionally or alternatively, an electrical contact element for establishing a plug connection can be electrically connected to the contact element, so that an electrical conductor inserted into the plug opening can be electrically connected to the contact element by contact with the contact element.
The clamping device can have one or more plug-in openings and, respectively, one or more spring elements and one or more actuating elements, wherein preferably each plug-in opening is assigned a spring element and an actuating element. If the clamping device has a plurality of plug openings and, correspondingly, a plurality of spring elements and actuating elements, a plurality of electrical conductors can be connected to the clamping device in order to provide, for example, an electrical potential distribution via the clamping device.
Drawings
The idea underlying the invention is explained in detail below with the aid of embodiments shown in the drawings. The figures show:
fig. 1 shows a view of an embodiment of a clamping device for connecting electrical conductors, with an operating element in a first pivoted position;
fig. 2 shows a view of the operating element together with the spring element of the clamping device, wherein the operating element is in a first pivoted position;
FIG. 3 shows an isolated view of the spring element;
fig. 4 shows a view of the clamping device with the operating element in a second pivoted position; and
fig. 5 shows a view of the operating element together with the spring element, wherein the operating element is in the second pivot position.
Detailed Description
In the exemplary embodiment of the clamping device 1 shown in fig. 1 to 5, the electrical conductor 2 can be inserted into the plug-in opening 10 of the housing part 11 in the plug-in direction E in order to electrically connect the electrical conductor 2 with the stripped conductor end 20 to the clamping device 1 and to mechanically fix it to the clamping device 1.
The clamping device 1 has a spring element 14 arranged on the housing part 11, which is supported on the housing part 11 by means of a support leg 141 and is thus fixed to the housing part 11 and extends into a receiving space 17 connected to the plug-in opening 10 by means of a clamping leg 142. The clamping leg 142 is connected to the supporting leg 141 via the curved connecting section 140 and can be elastically deflected relative to the supporting leg 141 in the event of deformation, in particular in the region of the connecting section 140, so that the clamping leg 142 can be elastically adjusted within the receiving space 17.
The actuating element 12 is arranged pivotably on the housing part 11 and is guided for this purpose via the lever head 120 by means of a sliding guide section 122 inside the lever head 120 on a curved guide surface 131 of the guide device 13 formed on the housing part 11. The actuating element 12 can be pivoted between different pivot positions relative to the housing part 11 in order to act on the clamping leg 142 of the spring element 14 and to adjust said clamping leg between a clamping position (fig. 1 and 2) and a release position (fig. 4 and 5).
In the embodiment shown, a contact element 16 is fixed to the housing part 11, which contact element is electrically connected to a contact element 18 in the form of a contact pin. The electrical conductor 2 can be inserted into the plug-in opening 10 of the housing part 11 in order to connect the electrical conductor 2 to the contact element 18 via the clamping device 1.
In the exemplary embodiment shown, the actuating element 12 has a leg 123, which connects the lever head 120 to the actuating section 125. The lever head 120 and the actuating section 125 are each formed as a projection on the leg 123 and are operatively connected to the clamping leg 142 of the guide device 13 or the spring element 14. The actuating element 12 is therefore open on one side, the leg 123 enclosing the guide 13 formed on the housing part 11 and in this way connecting the lever head 120 arranged outside the guide 13 to the actuating section 125 arranged inside the guide 13.
The guide means 13, via a guide surface 131 formed thereon, presets a movement path for pivoting the operating element 12 in the pivoting direction V. For this purpose, the guide surface 131 is curved and extends about a (virtual) pivot axis S of the actuating element 12 (see, for example, fig. 2).
On the inside of the lever head 120, a latching means 127 in the form of an inwardly projecting latching recess is formed on the slide guide section 122, which in the respective end position of the actuating element 12 (corresponding to the first pivot position in fig. 1 and 2 and the second pivot position in fig. 4 and 5) engages with a corresponding latching means 132, 133 in the form of a respective corresponding outwardly projecting latching projection on the guide surface 131 of the guide means 13, and the actuating element 12 is thus latched with the guide means 13. The operating element 12 is thus locked in a corresponding end position relative to the guide 13, wherein the user acts on the operating element 12 and the operating element 12 can be released from the latching position by applying a sufficient force.
The actuating element 12 is additionally supported on the housing section 110 of the housing part 11 by the end sections 124 on the legs 123, as can be seen from fig. 1 in conjunction with fig. 4.
The operating element 12, which is illustrated in fig. 2 together with the spring element 14, is arranged with its lever head 120 outside the housing part 11, as can be seen, for example, from fig. 1. The lever head 120 is connected via the leg 123 to an actuating section 125 extending transversely to the leg 123, which is designed to act on the clamping leg 142 of the spring element 14 and for this purpose engages in a V-shaped receiving pocket 145 on the clamping leg 142, as can be seen from fig. 2 and 5.
The lever head 120 is guided in a sliding manner on the guide 13, so that a movement path along the adjustment direction V of the actuating element 12 relative to the housing part 11 is predetermined via the guide 13. The lever head 120 is radially spaced from the operating section 125 relative to the pivot axis S. The guide surface 131 of the guide means 13 is directed outwards and the lever head 120 is slidingly guided outside the housing, so that a user can act on the lever head 120 in order to adjust the operating element 12 relative to the housing.
By pivoting the actuating element 12, the clamping leg 142 of the spring element 14 can be pivoted from the clamping position (fig. 1 and 2) into the release position (fig. 4 and 5) in that, when the actuating element 12 is pivoted, the actuating section 125 acts on the clamping leg 142 and moves it out of the region of the receiving space 17 inside the housing part 11, so that the electrical conductor 2 can be inserted into the receiving space 17 via the plug-in opening 10 or the inserted conductor can be removed from the receiving space 17.
By pivoting the operating element 12 back, the clamping leg 142 can be released again, for example after insertion of the electrical conductor 2, so that the clamping leg 142 can act on the electrical conductor 2 inserted into the plug-in opening 10 and thus aligned with the receiving space 17 and push it into contact with the contact element 16 in electrical contact therewith and mechanically lock it in the receiving space 17.
When the actuating element 12 is pivoted, the actuating section 125 is moved in a receiving pocket 145 formed on the clamping leg 142 in such a way that the actuating section 125 pivots in the receiving pocket 145 and the clamping leg 142 is moved as a result of the change in position of the actuating section 125 caused by the pivoting of the actuating element 12. Furthermore, when pivoting, the actuating element 12 is supported by its end section 124 on its leg 123 on the housing section 110 of the housing part 10.
As can be seen in particular from the individual view of the spring element 14 according to fig. 3, the spring element 14 has a tensioning element 144 formed on the support element 14 in the form of a web cut out from the support leg 141. The tensioning element 144 is integrally connected to the supporting leg 141 at an end 147 facing the end 143 of the supporting leg 141 facing away from the clamping leg 142 and projects with a free end 146 in the direction of the clamping leg 142, in particular of a receiving pocket 145 formed on the clamping leg 142. A recess 148, which is complementary to the tensioning element 144, is produced in the support leg 141, from which recess the tensioning element 144 is cut out, for example, in the course of a press bending process.
The tensioning element 144 serves to provide an additional tensioning force between the clamping leg 142 and the supporting leg 141 when the clamping leg 142 is moved out of the position according to fig. 1 and 2, i.e. out of the clamping position of the empty clamping device 1, which corresponds to the maximally unloaded position of the clamping leg 142. In the case of an empty clamping device 1, the clamping leg 142 does not come into contact with the tensioning element 144 as can be seen from fig. 2, so that the tensioning element 144 does not function in the unloaded position of the clamping leg 142 in the case of an empty clamping device 1.
If clamping leg 142 is displaced from the clamping position according to fig. 1 and 2 in the direction of the release position according to fig. 4 and 5, tensioning element 144 comes to bear with its free end 146 against clamping leg 142 in the region of receiving pocket 145. Therefore, when adjusting the clamping leg 142, the tensioning element 144 is elastically tensioned from a predetermined adjustment angle, so that in the release position according to fig. 4 and 5 the tensioning element 144 brings about an additional tensioning force between the clamping leg 142 and the supporting leg 141.
The offset of the clamping leg 142 relative to the supporting leg 141 takes place in particular in the region of the curved connecting section 140 with elastic bending. The elastic tensioning of the connecting section 140 caused by the bending is assisted by the deflection of the tensioning element 144, so that an additional tensioning force is provided by the tensioning element 144 for increasing the clamping force of the clamping legs 142 when the electrical conductor 2 is inserted. In this way, it is ensured that, when the electrical conductor 2 is inserted, the clamping legs 142 act with a sufficient clamping force on the electrical conductor 2 and thus press it into reliable electrical contact with the contact element 16 and, in addition, mechanically lock it in the receiving space 17.
For example, the inserted electrical conductor can have a thickness of, for example, 1.5mm with the aid of the tensioning element 1442、2.5mm2、4mm2Or 6mm2Such clamping force on the clamping legs 142 is adjusted to a clamping force of more than 15 newtons, preferably 20 newtons, for a nominal conductor cross section of (a).
Since the tensioning element 144 is formed integrally with the supporting leg 141 and thus with the spring element 14, a simple, low-cost manufacture is achieved. When manufacturing the spring element 14, the tension element 144 may be integrally formed with the spring element 14 in one process step in a press bending process.
The idea on which the invention is based is not limited to the embodiments described above but can also be implemented in other ways.
Clamping devices of the type in question can be used in completely different ways in order to connect electrical conductors to corresponding components. Such a clamping device can be realized, for example, as a block terminal, but can also be used in other electrical devices, such as junction boxes or the like.
Description of the reference numerals
1 clamping device
10 plug-in opening
11 shell component
110 housing segment
12 operating element (Lever element)
120 lever head
122 sliding guide section
123 leg
124 end section
125 operating section
127 locking part
13 guide device
131 guide surface
132 corresponding latch part
133 corresponding latch part
14 spring element
140 connecting section
141 support leg
142 clamping leg
143 end of the tube
144 tensioning element
145 containment bag
146. 147 end part
148 gap
16 contact element
17 accommodation space
18 contact element
2 electric conductor
20 end of conductor
E direction of insertion
S pivot axis
Direction of pivoting of V

Claims (14)

1. Clamping device (1) for connecting electrical conductors (2), having: a housing part (11) having a plug-in opening (10) for inserting the electrical conductor (2); a spring element (14) arranged on the housing part (11) and having a clamping leg (142) for acting on the electrical conductor (2) inserted into the plug-in opening (10) and a supporting leg (141) for supporting the spring element (14) relative to the housing part (11); and an operating element (12) for adjusting the clamping leg (142) between different positions relative to the supporting leg (141), characterized in that the spring element (14) has a tensioning element (144) which is formed on the clamping leg (142) or the supporting leg (141) and which can be elastically deformed when the clamping leg (142) is adjusted relative to the supporting leg (141) in order to bring about an elastic tensioning force between the clamping leg (142) and the supporting leg (141).
2. Clamping device (1) according to claim 1, characterized in that the tensioning element (144) is formed as a web on the clamping leg (142) or the supporting leg (141).
3. The clamping device (1) according to claim 1 or 2, characterized in that the tensioning element (144) is connected on one end (147) with the clamping leg (142) or the supporting leg (141) and the other end (146) is intended to interact with the respective other of the clamping leg (142) and the supporting leg (141).
4. The clamping device (1) as claimed in one of claims 1 to 3, characterized in that the clamping leg (142) is adjustable between a release position, in which an electrical conductor (2) can be inserted into the plug-in opening, and a clamping position for acting on an electrical conductor (2) inserted into the plug-in opening (10), wherein the tensioning element (144) is designed to cause an elastic tensioning force between the clamping leg (142) and the supporting leg (141) in the release position.
5. The clamping arrangement (1) as claimed in one of the preceding claims, characterized in that the operating element (14) is formed by a lever element (12) which can be pivoted relative to the housing part (11) and which has an operating section (125) for acting on a clamping leg (142) of the spring element (14) and a lever head (120), the operating element (12) being pivotable along a pivot direction (V) between a first pivot position and a second pivot position for adjusting the clamping leg (142) relative to a housing.
6. The clamping device (1) according to claim 5, characterized by a guide device (13) arranged on the housing part (11) having a guide surface (131) extending in the pivoting direction (V), wherein the operating element (12) has a slide-guiding section (122) formed on the lever head (120), which slide-guiding section is slidably guided on the guide surface (131) of the guide device (13) such that the slide-guiding section (122) moves in the pivoting direction (V) on the guide surface (131) when the operating element (12) is pivoted between the first and second pivoting positions.
7. The clamping device (1) according to claim 6, characterised in that the operating element (12) is pivotable relative to the housing part (11) about a pivot axis (S), the lever head (120) being arranged radially outside the guide surface (131) relative to the pivot axis (S).
8. The clamping device (1) according to claim 7, wherein the guiding surface (131) is curved around the pivot axis (S).
9. The clamping device (1) according to one of claims 6 to 8, characterized in that the lever head (120) is arranged on a side of the guide surface (131) facing away from the operating section (125).
10. The clamping device (1) as claimed in one of claims 6 to 9, characterized in that a slide guide section (122) is formed on a surface of the lever head (120) facing the operating section (125).
11. The clamping device (1) according to one of the claims 6 to 10, characterized in that the lever head (120) has a latching portion (127) for latching with a corresponding latching portion (133) formed on the guide device (13) in the first or second pivot position.
12. The clamping device (1) according to any one of claims 5 to 11, characterized in that the operating section (125) is accommodated in an accommodating pocket (145) formed on the clamping leg (142).
13. The clamping device (1) according to one of claims 5 to 12, characterised in that the operating element (12) has an end section (124) facing away from the lever head (120), which end section is supported on a housing section (110) of the housing part (11).
14. The clamping device (1) according to one of the preceding claims, characterized by an electrical contact element (16) arranged on the housing part (11), wherein the clamping leg (142) is designed to clamp an electrical conductor (2) inserted into the plug-in opening (10) with the contact element (16) in the clamping position.
CN202110686864.3A 2020-06-22 2021-06-21 Clamping device for connecting electrical conductors Pending CN114122752A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020116380.0A DE102020116380A1 (en) 2020-06-22 2020-06-22 Terminal device for connecting an electrical conductor
DE102020116380.0 2020-06-22

Publications (1)

Publication Number Publication Date
CN114122752A true CN114122752A (en) 2022-03-01

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Application Number Title Priority Date Filing Date
CN202110686864.3A Pending CN114122752A (en) 2020-06-22 2021-06-21 Clamping device for connecting electrical conductors

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CN (1) CN114122752A (en)
DE (1) DE102020116380A1 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015104625B4 (en) 2015-03-26 2022-11-17 Phoenix Contact Gmbh & Co. Kg conductor terminal
DE102016108826A1 (en) 2016-05-12 2017-11-16 Phoenix Contact Gmbh & Co. Kg terminal

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