CN111971854A - Connecting terminal, clamping spring of connecting terminal and rail-mounted terminal - Google Patents
Connecting terminal, clamping spring of connecting terminal and rail-mounted terminal Download PDFInfo
- Publication number
- CN111971854A CN111971854A CN201980022295.3A CN201980022295A CN111971854A CN 111971854 A CN111971854 A CN 111971854A CN 201980022295 A CN201980022295 A CN 201980022295A CN 111971854 A CN111971854 A CN 111971854A
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- clamping
- leg
- spring
- actuating
- actuating lever
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Images
Classifications
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- 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
- 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
- H01R4/48455—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar insertion of a wire only possible by pressing 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
- 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
- H01R9/2608—Fastening means for mounting on support rail or strip
Abstract
The invention relates to a connecting terminal having an insulating material housing, a busbar, a clamping spring and an actuating lever which is pivotably received in the insulating material housing via a pivot region and can be pivoted between an open position and a closed position, wherein the clamping spring has an actuating leg which is deflected at least in the open position by a spring driver of the actuating lever, characterized in that the actuating lever is seated in the open position on a first seating point and a second seating point spaced apart therefrom, and the actuating lever is pulled onto the first seating point and the second seating point by a tensile force of the clamping spring acting on the spring driver by the actuating leg.
Description
Technical Field
The invention relates to a terminal having an insulating material housing, a clamping spring and an actuating element which is pivotably received in the insulating material housing via a pivot region, wherein the actuating element interacts with the clamping spring. The clamping spring can have a clamping leg and/or an abutment leg. The clamping tongue can have a clamping tongue. The clamping spring can have a spring bow connected to the abutment leg. The clamping legs can be connected to the spring bow. The clamping spring can have an actuating leg which projects from the clamping leg. The actuating element can interact with the actuating leg in order to move the clamping tongue. The actuating element can be, for example, an actuating lever which is pivotably received in the insulating material housing via a pivot region. The connecting terminal can also have a bus bar.
The invention further relates to a terminal having an insulating material housing, a clamping spring and an actuating lever which is pivotably received in the insulating material housing via a pivot region and can be pivoted between an open position and a closed position, wherein the clamping spring has an actuating leg which is deflected at least in the open position by a spring catch of the actuating lever. The connecting terminal can also have a bus bar. The two mentioned embodiments of the connecting terminal can also be advantageously combined with one another.
The invention further relates to a clamping spring of a connecting terminal for connecting an electrical line to a busbar, wherein the clamping spring has an abutment leg, a spring bow connected to the abutment leg, and a clamping leg which is connected to the spring bow and terminates in a clamping tongue, wherein an actuating leg projects from the clamping leg, wherein the actuating leg has a driver opening for engaging a spring driver of an actuating lever of the connecting terminal. The actuating leg can have two lateral webs spaced apart from one another. The actuating leg can have a transverse web. The transverse webs can connect the lateral webs to one another at their free ends. The lateral webs and the transverse webs can enclose a driver opening. Such a clamping spring is suitable, for example, as a clamping spring for a terminal of the type described above.
The invention further relates to a terminal having an insulating material housing, a busbar, a clamping spring and an actuating lever which is pivotably received in the insulating material housing via a pivot region and can be pivoted between an open position and a closed position, wherein the clamping spring has an actuating leg which is deflected at least in the open position by a spring catch of the actuating lever, wherein the actuating lever is seated on the busbar at least via a partial region of the pivot region by means of a seating force, and wherein the actuating lever can be locked in the open position by means of at least one securing element provided on the actuating lever in cooperation with a mating securing element formed on the busbar. The fastening element mentioned above can be, for example, a fourth fastening element, which is also explained below. A part of the busbar, in particular a bending region of the busbar, which is also described below, can be used as a mating fastening element.
The invention further relates to a rail terminal having an insulating material housing for locking onto a carrier rail, having:
a) at least one first conductor connection element having a first clamping point for connecting a first electrical conductor, and
b) at least one second wire connection element having a second clamping point for connecting a second electrical wire,
c) wherein the first conductor connection element has a spring-loaded clamping connection element with a clamping spring for clamping the first electrical conductor at a first clamping point by means of spring force,
e) wherein the second wire connecting piece
e1) With an actuating opening for introducing a separate actuating tool for opening the second clamping point, or
e2) Having an actuating element in the form of a press for opening the second clamping point, or
e3) The second conductor connection piece has a knife-type clamping connection or a screw connection for connecting the second electrical conductor at the second clamping point.
Disclosure of Invention
In general, the invention relates to the field of wire connection by means of clamping springs. The invention is based on the object of improving such a terminal, its clamping spring and the rail-mounted terminal formed therewith.
The object is achieved by the subject matter described in the independent claims. Advantageous embodiments of the invention are given in the dependent claims. Further advantageous embodiments of the invention are given in the following description and in the drawings.
According to an advantageous embodiment of the invention, it is provided that the actuating lever is arranged on the busbar at least via a partial region of the pivot region. Accordingly, the actuating lever is supported on the bus bar, which enables a robust mounting of the actuating lever and the possibility of securing it in a specific position, for example in the open position or in the closed position. The busbar can be fixed in the insulating material housing, i.e. it is arranged in the insulating material housing essentially immovably in all three spatial directions except for tolerances.
According to an advantageous embodiment of the invention, it is provided that the actuating lever has at least one mounting lug for mounting the actuating lever on the busbar. In this way, a defined seating surface of the actuating lever is provided, via which the actuating lever can be supported on the busbar. The mounting projection can project laterally, for example, out of the pivot plane of the lever, for example on one side or on both sides of the lever.
According to an advantageous embodiment of the invention it is proposed that,
the operating lever has a first guide section,
the busbar has a recess, and
the actuating lever is lowered into a recess in the busbar by means of the first guide section at least via a partial region of the pivot region.
In this way, the actuating lever is additionally guided by the bus bar during pivoting and is held in the desired pivoting plane against laterally occurring forces. The recesses in the busbars can be formed, for example, in the form of slots, i.e., in the form of longitudinal slots of the busbars.
According to an advantageous embodiment of the invention, it is provided that the recesses in the busbar are surrounded in a slit-like manner and in particular on the circumferential side by the material of the busbar. In this way, the recess can form a robust guide for the first guide section of the operating lever. Furthermore, the bus bar is not excessively weakened by the notch.
The invention is also based on the idea of providing a terminal with a clamping spring and a busbar, which has slit-shaped recesses. Such a terminal can also be advantageously combined with the other embodiments of the terminal. The slit-shaped recess can be used for different purposes, for example for fixing a busbar in an insulating material housing. Another possible application for supporting and guiding the operating lever is described above.
In accordance with an advantageous embodiment of the invention, it is therefore provided that the actuating lever is guided in the pivoting movement at least via a partial region of the pivot region by the first guide section in a recess in the busbar.
According to an advantageous embodiment of the invention, it is provided that the mounting lug is arranged on the actuating lever adjacent to the first guide section. The seating projection and the first guide section can be spaced apart, for example, by a groove. In an advantageous embodiment, at least no element having a guiding function is present between the mounting lug and the first guide section. The seating projection and the first guide section can have guide surfaces which are at an angle of, for example, 90 ° to one another. The mounting lug can also be arranged adjacent to the first guide section, for example laterally offset from the first guide section. In this way, the lateral guidance of the actuating lever via the first guide section can be combined in a mechanically advantageous manner with the support of the actuating lever on the busbar by means of the mounting projection.
According to an advantageous embodiment of the invention, it is provided that the contact leg is arranged on the busbar. This has the advantage that the clamping spring can be supported directly on the busbar, which opens up the possibility of providing a self-supporting contact insert in which the least possible transmission of force to the insulating material housing occurs.
According to an advantageous embodiment of the invention, it is provided that the actuating lever is mounted in a floating manner in the insulating material housing. Accordingly, the control lever does not have a fixed (rigid) axis of rotation, but can be moved during the pivoting movement with at least one further degree of freedom, for example a translational degree of freedom. In this way, the function of the lever can be further improved, for example with regard to the fixing of the lever in the open position and in the closed position. The axis of rotation which is effective in the respective operating state of the control lever is also referred to as the instantaneous center. The instantaneous center can thus be location-variable during the pivoting movement of the joystick.
According to an advantageous embodiment of the invention, it is provided that the busbar has a first busbar section, on which a first clamping point of a first conductor connection of the connecting terminal is formed, and a second busbar section, wherein the first busbar section is connected to the second busbar section via a bending region of the busbar, in which bending region the busbar is bent. In this way, a particularly compact connection terminal that can be actuated by means of a lever can be realized. Furthermore, the bending region and/or the second busbar section can be used for other functions of the connecting terminal, for example for the arrangement of a control lever, for additional guidance thereof during pivoting and/or for the fixing thereof, for example in the open position.
In accordance with an advantageous embodiment of the invention, it is therefore provided that the actuating lever is arranged on the busbar in the second busbar section at least via a partial region of the pivot region. The contact leg can be supported on the busbar in or on the first busbar section.
According to an advantageous embodiment of the invention, it is provided that the actuating lever has, in the region which is arranged on the busbar, a contour which is adapted to the curvature of the curvature region, said contour being arranged on the upper side of the curvature region in the open position of the actuating lever, and forming a fourth fastening element for fastening the actuating lever to the busbar. In this way, in the open position of the lever, i.e. in the open pivoted state, the lever can be fixed by the form-fitting engagement of the bending region into the matching contour. The matching contour thus forms a fourth fixing element, for example a locking element, for fixing the actuating lever in the open position.
According to an advantageous embodiment of the invention, it is provided that an interior angle in the range from 105 to 165 degrees or from 120 to 150 degrees is formed between the first busbar section and the second busbar section by means of the bending region. This also contributes to a compact design of the terminal. Furthermore, an advantageous wire insertion direction can be achieved, for example for applications in rail-mounted terminals.
According to one advantageous embodiment of the invention, the bending region is designed such that, starting from the second busbar section, the busbar is first bent concavely with a first radius (R1) and then transitions into a convexly bent section with a second radius (R2). In other words, the radii of curvature of the first radius R1 and the second radius R2 are oppositely oriented. In this way, a kind of "bump" can be realized in the bending region, which is particularly suitable for a form-fitting fixing of the actuating lever in the open position.
The bending region can be designed in particular such that the busbar passes directly from the first radius into the second radius without an unbent region being provided therebetween. By the described arrangement with a first radius and a second radius that is curved opposite thereto, a sort of bulge, i.e. a section that is convex with respect to the adjoining section of the busbar, is formed in the busbar.
According to an advantageous embodiment of the invention, it is provided that the recess of the busbar is provided only in the second busbar section or extends from the second busbar section into the bending region or from the second busbar section via the bending region into the first busbar section. In this way, the region of the busbar for guiding the actuating lever can be spatially separated from the region of the busbar in which the spring-force clamping connection is formed by means of the clamping spring.
According to an advantageous embodiment of the invention, the actuating leg has a driving region and the actuating lever has a spring driver which interacts with the driving region in order to move the spring tongue. In this way, the spring tongue can be deflected by the actuating lever. The driver region on the actuating leg can, for example, be configured as a driver opening or also as a lateral cutout in the actuating leg, as is also explained below.
According to an advantageous embodiment of the invention, the spring catch is arranged at least partially or completely within the recess of the busbar in the closed position. In this way, the spring driver is moved far back, so that it does not exert any influence on the actuating leg. In addition, the spring catch additionally acts as a guide element which guides the actuating lever in the region of the closed position within the recess of the busbar.
According to an advantageous embodiment of the invention, the actuating lever is arranged on the busbar in such a way that: at least one seating projection of the actuating lever is seated on a seating region of the busbar facing the actuating lever. The mounting region is provided, for example, on the upper side of the busbar. The first guide section or an element of the actuating lever connected to the first guide section, for example a second fastening element, can pass through the recess of the busbar and fulfill other functions. In this way, the actuating lever can function in combination with the recess on both sides of the busbar, i.e. not only on the upper side but also on the lower side facing away from the upper side. The actuating lever or its element protruding out of the recess therefore interacts with another element of the connecting terminal, for example with a section of the insulating material housing, as is also explained below with regard to the second fastening element.
According to an advantageous embodiment of the invention, it is provided that the spring catch is arranged at least in the closed position in the bending region of the busbar. This also contributes to providing the connection terminal in a compact configuration. The region of the clamping spring that can be actuated by the spring driver can thus be designed to extend beyond the busbar only slightly. The spring driver is preferably formed on the first guide section of the actuating lever. As a result of the first guide section together with the spring driver being recessed into the slit-shaped recess of the busbar, overall a small overall height of the connecting terminal can be achieved. Furthermore, the length of the steering legs can also be reduced.
According to an advantageous embodiment of the invention, it is provided that the busbar has a line feed opening into which the contact leg and the clamping tongue are inserted. As a result, the terminal can be designed particularly compactly, in particular with regard to the electrical contact insert.
According to an advantageous embodiment of the invention, it is provided that the conductor lead-through opening has a wall section on the periphery, which wall section projects out of the busbar plane and forms a material bead. This enables a good contact of the electrical conductor and a robust mechanical fastening of the electrical conductor. The material flange can be produced in a manner that is advantageous in terms of production technology, for example in one piece from the material of the busbar.
According to an advantageous embodiment of the invention, it is provided that the terminal has a second line connection for connecting a second electrical line, wherein the second line connection is electrically conductively connected to the first line connection via the second busbar section or can be connected via a connecting element. In this way, a plurality of electrical leads can be connected simultaneously. The connecting terminal can be designed, for example, as a rail-mounted terminal.
According to an advantageous embodiment of the invention, it is provided that the first busbar section extends towards its free end in a direction away from the actuating lever. In this way, the lead-in direction for the introduction of the first electrical lead can advantageously be set.
According to an advantageous embodiment of the invention, it is provided that, in the closed position, the outer surface of the manual actuation section extends in the longitudinal extension direction of the actuation lever essentially parallel to the second busbar section, which connects the first busbar section to the third busbar section, or essentially parallel to the third busbar section. The outer surface of the manually manipulatable section is a surface that is distal from the insulating material housing in the closed position when the manipulatable lever is in the closed position. This allows the construction height of the rail-mounted terminal to be minimized.
According to an advantageous embodiment of the invention, it is provided that, in the closed position, in particular when the electrical line is not clamped at the first clamping point, the actuating lever extends from the clamping leg first along the first busbar section and protrudes beyond the bending region. In this way, the actuating leg can be arranged in a space-saving manner and can nevertheless be gripped by the spring catch without problems when the actuating lever is moved into the open position.
According to an advantageous embodiment of the invention, it is provided that the actuating lever projects from the clamping leg, wherein the actuating leg has two lateral webs spaced apart from one another and a transverse web connecting the lateral webs to one another at their free ends, wherein the lateral webs and the transverse web enclose a driver opening for engaging a spring driver of the actuating lever of the connecting terminal. This allows a favorable force transmission from the actuating lever to the clamping leg while simultaneously providing a space-saving design of the connecting terminal.
According to an advantageous embodiment of the invention, it is provided that the crosspiece forms a guard against the lever being pulled out of the insulating material housing in conjunction with at least one region of the insulating material housing at least when the lever is in the open position. Accordingly, no additional securing means, in particular no additional components for preventing the lever from being pulled out in the open position, are required.
According to an advantageous embodiment of the invention, it is provided that the region of the insulating material housing forming the protective section which prevents the actuating lever from being pulled out of the insulating material housing forms a stop for the crosspiece of the actuating leg.
According to an advantageous embodiment of the invention, it is provided that the actuating lever can be pivoted from a closed position, in which the clamping edge, in particular the clamping edge of the clamping tongue, together with the busbar forms a clamping point for clamping the electrical conductor, into an open position, in which the clamping edge is lifted off the busbar in order to open the clamping point. Accordingly, the closed position of the lever corresponds to the closed position of the clamping point, and the open position of the lever corresponds to the open clamping point.
According to an advantageous embodiment of the invention, it is provided that the insulating material housing has an opening which is covered by the actuating lever in the closed position of the actuating lever, wherein the opening leads to the clamping spring or to a further electrically conductive component of the connecting terminal. The opening can in particular be designed as a rod-insertion slot in the ceiling of the insulating material housing. The opening is covered in the closed position, for example, via a manual actuation section of the actuation lever. The current-conducting element within the connection terminal is thereby shielded from the outside environment, so that contact security (finger security) of the connection terminal is achieved. The top plate can be designed as a housing wall of the insulating material housing, which is offset slightly inward with respect to the outer contour of the insulating material housing.
In addition to the aforementioned opening, the insulating material housing can have a rod opening which allows the operating rod to be inserted with the insulating material housing completely installed. The aforementioned opening can here form part of the rod opening. In this way, in the terminal according to the invention, the actuating lever can be inserted through the lever opening, i.e. from above, when the insulating material housing is completely installed, i.e. without further, for example, lateral openings.
The rod opening can be completely surrounded on the circumferential side by the material of the insulating material housing, i.e. by a corresponding wall or other section of the insulating material housing. If the actuating lever is mounted in its final position in the connecting terminal, at least the manual actuating section projects at least partially out of the insulating material housing, i.e. the actuating lever then extends through the lever opening.
The lever opening can have a simple shape, such as, for example, a rectangular shape in plan view. The rod opening can also have a more complex shape. The rod opening can in particular have a tapering portion, so that the width of the rod opening varies over its longitudinal extension. For example, the tapering can be realized by the roof plate mentioned, so that between the roof plate elements the rod passage slots are formed as narrower regions of the rod openings. The width of the lever opening is measured in the transverse direction of the terminal, wherein the direction of the actuating lever perpendicular to the pivot plane is suitable as the transverse direction of the terminal. In this case, the second guide section of the actuating lever can be inserted into the region of the lever opening in which the taper is formed when the actuating lever is in the closed position. The actuating lever can have lateral recesses, by means of which the region of the actuating lever that can be inserted into the region of the lever opening that is formed with the taper can be formed narrower than the adjoining region, for example narrower than the manual actuating section. In the closed position, the top panel can be at least partially received in the lateral recess.
The ceiling plane is defined by the surface of the ceiling directed to the outside of the insulating material housing. In the open position, the spring catch of the actuating lever can project outward from the plane of the top plate.
The top plate can furthermore serve as a stop and/or a mounting element for the actuating lever when the actuating lever is in the closed position. For example, the manually actuated section can be placed with its underside on the top plate.
The actuating element or actuating lever can be formed in particular as an integrated component of the terminal, in contrast to actuating tools which are not part of the terminal and which have to be accessed separately when the clamping point of the terminal is to be opened. By forming the actuating element or actuating lever as an integral component of the connecting terminal, no separate tools need to be available. The actuating element or actuating lever can then permanently provide for the actuation of the clamping spring.
According to an advantageous embodiment of the invention, it is provided that the spring driver sinks into the opening in the open position of the actuating lever. In this way, the opening of the insulating material housing can also be filled in the open position, so that contact security of the connection terminal is also achieved in the open position. In this case, no additional components are required, but the actuating lever can fulfill the function together with its spring driver.
According to an advantageous embodiment of the invention, it is provided that the actuating lever has a second guide section which projects toward the lever passage slot and by means of which the actuating lever is guided in the region of the closed position. In this way, additional guidance of the actuating lever in the closed region can be achieved, in particular in addition to the lower guide, by means of which the actuating lever is guided by its first guide section in the recess of the busbar.
According to an advantageous embodiment of the invention, it is provided that the actuating lever has at least one third laterally protruding fastening element on the second guide section, by means of which the actuating lever can be fastened in the closed position in the region of the top plate. This allows a simple and reliable fixing of the lever in the closed position.
According to an advantageous embodiment of the invention, it is provided that the actuating lever has at least one second fixing element, by means of which the actuating lever is fixed in the open position. In this way, the operating lever can be safely secured in the open position. The fastening can alternatively or additionally to the aforementioned fastening by means of the fourth fastening element be present on the bending region of the busbar.
According to an advantageous embodiment of the invention, it is provided that the second fastening element is recessed into a receptacle formed in the insulating material housing in the closed position. In this way, it is possible to achieve a prevention of the lever being pulled out in the closed position. Furthermore, a reset brake for the actuating lever can be realized in this way, so that occurring lever rebounds are damped. In particular, the operating lever is also prevented from being removed from the insulating material housing or slipping out of the insulating material housing during the rebound of the lever.
According to an advantageous embodiment of the invention, it is provided that the actuating lever in each actuating position is predominantly located in the region enclosed by the outer contour of the insulating material housing. This has the advantage that the operating lever is protected by the insulating material housing and that in each operating state of the operating lever, even when pivoted, only a small amount of additional external space is required. The actuating lever can in the open position lie in a main region of its longitudinal extent, at least in a region of at least 30% or at least 40%, which is enclosed by the outer contour of the insulating material housing.
The actuating lever mentioned above can also be designed differently from a lever, for example, which is designed to actuate a slide or other actuating element. Accordingly, the invention also relates to a terminal of the type mentioned above, wherein instead of an actuating lever, any type of actuating element for actuating the clamping leg is provided.
According to an advantageous embodiment of the invention, it is provided that, in a terminal having an actuating element of any desired design, the actuating leg has two lateral webs spaced apart from one another and a transverse web connecting the lateral webs to one another at their free ends, the actuating element interacting with the actuating leg projecting from the clamping leg in order to move the clamping tongue, wherein the lateral webs and the transverse web enclose a driver opening for engaging a spring driver of the actuating element of the terminal. This allows a good transmission of force from the actuating element to the actuating leg, even in a compact embodiment of the connecting terminal.
According to an advantageous embodiment of the invention, it is provided that the spring driver has a width that varies over its extension, in particular that the spring driver narrows towards its free end. The width of the spring driver is measured in the transverse direction of the connecting terminal. This simplifies the introduction of the spring driver into the driver opening. Accordingly, the spring driver can be configured as follows: first and/or second and/or third spring driver regions are formed on the spring driver. In this case, the first spring driver region can be narrower than the second spring driver region. The second spring driver region can be narrower than the third spring driver region.
The spring driver can additionally or alternatively be narrowed toward its free end by a different dimension than its width, for example in the direction of its height. The height of the spring driver is measured here in a direction perpendicular to the pivot plane of the actuating lever and perpendicular to the maximum longitudinal extent of the actuating lever, i.e. the overall length of the actuating lever.
The spring driver can be designed such that the width decreases continuously and/or in a stepwise manner in its width direction towards its free end. Accordingly, there can be at least one step and/or edge with respect to the width dimension, wherein the step does not necessarily have to run at right angles, but can run at any other angle. The spring driver can be designed such that its height decreases continuously and/or in a stepped manner towards its free end in the direction of its height. Accordingly, at least one step and/or edge can be present with respect to the height dimension, wherein the step does not necessarily have to extend at right angles, but can extend at any other angle.
According to an advantageous embodiment of the invention, the spring driver is rounded in a side view of the actuating lever at its free end, for example with a radius. Accordingly, there is no sharp region and/or edge at the free end of the spring driver, but rather the aforementioned rounding.
If the operating lever is pivoted in its pivot region, the spring driver performs this pivoting movement together with the operating lever.
Overall, the spring driver can be designed to be relatively long and thin in the present invention compared to the prior art solutions. The length of the spring driver can be, for example, at least 20% or at least 25% or at least 30% of the length of the actuating rod in the bearing region. The region of the actuating lever which extends in the longitudinal direction of the actuating lever from the spring driver to the rear end facing away from the spring driver is referred to herein as a bearing region. The portion of the length of the spring driver, based on the total length of the actuating lever, is for example at least 7% or at least 8% or at least 9%.
According to an advantageous embodiment of the invention, it is provided that the third spring driver region forms a guide for the lateral webs of the actuating leg when the actuating element is moved into the open position. Accordingly, the lateral webs each essentially bear against the third spring driver region. As a result, a deflection between the actuating leg and the spring driver is avoided.
According to an advantageous embodiment of the invention, it is provided that the actuating lever rests in the open position on a first resting position and a second resting position spaced apart therefrom, and that the actuating lever is pulled onto the first and second resting positions by the tensile force of the clamping spring exerted by the actuating leg on the spring driver. This has the advantage that the actuating lever is additionally held and fixed in the open position by the tension of the clamping spring, which has the following advantages in relation to a rigid fixation, for example by means of a locking element: even when slightly deflected away from the actual open position, the actuating lever is pulled back again in the direction of the open position. In this way, the joystick can be firmly fixed even in the presence of external loads, such as strong vibration loads.
The first and second mounting points can be arranged on the same component of the terminal or on different components of the terminal. For example, one mounting point can be formed on the insulating housing and the other mounting point on the busbar.
According to an advantageous embodiment of the invention, it is provided that the line of action of the tensile force of the actuating leg extends through the first and second resting locations. In this way, a robust fixation of the lever in the open position can be achieved in a simple manner. It is particularly advantageous if the line of action of the tensile force of the actuating lever extends through the intermediate region between the first and second seating positions, in particular in the range from 30% to 70% of the distance between the first and second seating positions.
According to an advantageous embodiment of the invention, it is provided that the actuating leg extends between the first and second seating positions in the open position. In this way, the connecting terminal and in particular the electrical contact insert can be designed particularly compactly.
According to an advantageous embodiment of the invention, it is provided that the actuating lever has a second fastening element, by means of which the actuating lever is seated in the open position on the first seating point, wherein the second fastening element forms a recess along an outer circumference of the actuating lever. A recess of this type is understood here to mean a concave shape of the surface. The term "bulge" is understood to mean a convex shape of the surface. A secure locking in the sense of a locking of the actuating lever is possible by means of such a depression and a bulge.
According to an advantageous embodiment of the invention, provision is made for a seating surface to be formed on the insulating material housing, which seating surface forms a first seating point in the open position, wherein the seating surface is part of a bulge of the insulating material housing.
According to an advantageous embodiment of the invention, it is provided that the second seating point is provided on the busbar, in particular in the form of a projection of the busbar facing the actuating lever.
According to an advantageous embodiment of the invention, it is provided that the force introduction point of the tensile force into the actuating lever in the open position is configured such that a torque acts on the actuating lever, which is counteracted by the positioning of the actuating lever at the first and second positioning points. The actuating lever is therefore permanently subjected to a torque load when it is in the open position, but is held by the seating on the first and second seating points. Accordingly, the lever does not have to be held manually in the open position.
According to an advantageous embodiment of the invention, it is provided that a connecting line extending through the first and second seating locations has an intersection with the actuating leg, wherein the angle from the actuating leg to the connecting line is less than 90 °. A straight line parallel to the connecting straight line can also have an intersection with the steering leg. In this case, the angle from the steering leg to a line parallel to the connecting line is less than 90 degrees.
According to an advantageous embodiment of the invention, it is provided that the angle from the actuating leg to the connecting line or to a line parallel thereto is greater than 20 °, in particular greater than 30 ° or greater than 45 °. In this way, a particularly secure seating of the actuating lever is ensured in the open position. The operating lever is also held firmly in the open position in the presence of a vibration load.
According to an advantageous development of the invention, an angle in the range of 60 ° to 120 ° is formed between a plane of the housing surface of the insulating material housing, in which the actuating lever projects from the insulating material housing in the open position, and a spatial plane running perpendicular to the pivot plane of the actuating lever, which extends centrally through the manual actuating section of the actuating lever. This allows for a beneficial gripping of the joystick in the open position and an ergonomically beneficial transfer from the closed position into the open position. In an advantageous embodiment, the angular range can start at 70 °, 75 ° or 80 ° instead of 60 °. The angular range can end at 110 °, 105 ° or 100 ° instead of at 120 ° in its upper limit value.
According to an advantageous embodiment of the invention, it is provided that at least the second seating point is formed by two seating surfaces spaced apart from one another perpendicular to the pivot plane of the actuating lever, on which seating surfaces the actuating lever is seated. This makes it possible to achieve a multipoint arrangement of the control rod at spatially distributed points, in particular a three-point bearing as explained below.
According to an advantageous embodiment of the invention, it is provided that the actuating lever is mounted in a three-point bearing fashion by means of two mounting surfaces of the second mounting point and by means of the first mounting point. Thereby, the operating lever is reliably held in a mechanically defined manner.
Three mounting points can be formed on the circumference of the control lever, viewed in a side view of the control lever. In this case, the central mounting point (second mounting point) of the three mounting points can be supported on the busbar. Two further contact points (first and third contact points) surrounding the central contact point can be supported on the housing of the connecting terminal. The central placement point can be formed as a single placement point or as two laterally offset placement points. If there are two intermediate contact points, these can be arranged eccentrically in the transverse direction of the lever and accordingly on both sides of the center plane of the lever. For example, the intermediate placement point can be realized by the arrangement of two eccentric fourth fixing elements, which are also described later.
For the three-point bearing in the open position mentioned, the actuating lever can accordingly have at least three resting points. The first fixing element or the second fixing element can form such a mounting point. Additionally, two placement points can be formed by the fourth fixing element. When not only the first fixing element but also the second fixing element form such a mounting point, it is also possible to form a further (fourth) mounting point.
According to an advantageous embodiment of the invention, it is provided that the seating surface of the second seating location is arranged in a respective spatial plane arranged parallel to the pivot plane of the actuating lever, and that the first seating location is arranged in a third spatial plane arranged parallel to the first and second spatial planes, said third spatial plane being arranged between the first and second spatial planes. This allows a firm support of the lever in the open position. In particular, the actuating lever cannot be unintentionally released, even when the connecting terminal is subjected to vibration loads.
According to an advantageous embodiment of the invention, it is provided that the actuating lever is seated in the open position at least at a first seating point, wherein the insulating material housing has an intermediate wall, the first seating point being formed on one side of the intermediate wall, and the clamping spring extends along the opposite side of the intermediate wall. In this way, the clamping spring can advantageously be integrated in the insulating material housing in the region of the intermediate wall. The intermediate wall can be formed within the insulating material housing like an island made of insulating material. In this way, the insulating material housing participates in the positioning of the operating lever and in the other functions of the connecting terminal. This also contributes to a compact construction of the terminal.
According to an advantageous embodiment of the invention, it is provided that the intermediate wall is supported and mounted on the clamping spring in a manner that counteracts the mounting force exerted by the actuating lever on the intermediate wall at the first mounting point. Accordingly, the intermediate wall is tensioned between two forces exerted by the clamping spring, i.e. one of the setting forces transmitted by the actuating lever and the counter force of the clamping spring. In this way, a self-supporting system can advantageously be realized. Furthermore, in this way, the plastic component is supported on the metal component which generates or introduces the force, which is advantageous in the case of moisture effects which can lead to a reduction in the stability of the plastic material.
In accordance with an advantageous embodiment of the invention, it is therefore provided that the intermediate wall bears and bears against the abutment leg and/or against a spring bracket which connects the abutment leg and the clamping leg of the clamping spring to one another, against the setting force which is exerted on the intermediate wall by the actuating lever at the first setting point.
According to an advantageous embodiment of the invention, it is provided that the setting force of the actuating lever is caused by a tensile force transmitted to the actuating lever by the actuating leg of the clamping spring. By transmitting a pure tensile force, the elements involved in the force transmission in the clamping spring, such as for example a part of the actuating leg, are very material-saving and accordingly also space-saving.
According to an advantageous embodiment of the invention, it is provided that the intermediate wall is formed from a solid insulating material or has at least one reinforcement, in particular at least one rib-shaped reinforcement. The insulating material housing can be, for example, plastic.
The embodiments of the clamping spring already mentioned at the outset which are explained later are suitable, for example, as clamping springs for connecting terminals of the type explained above.
The object is also achieved by a clamping spring having an abutment leg, a spring bow connected to the abutment leg, and a clamping leg which is connected to the spring bow and ends with a clamping tongue, wherein the actuating leg projects from the clamping leg, and having two lateral webs which are integrally formed with the clamping spring and wherein the lateral webs are bent out of the clamping leg of the clamping spring with an average bending radius, and wherein the clamping spring is stamped and bent from a flat metal sheet having a predetermined thickness, wherein the ratio of the average bending radius of the metal sheet to the thickness is less than 3. The average bending radius here relates to the material center line of the metal sheet. In this way, the force introduction of the actuating lever via the actuating leg into the clamping spring can be optimized. This results in a direct transmission, a short stroke and thus essentially no tension in the actuating leg. Furthermore, this configuration allows simple production of the used components of the terminal and the entire terminal. The described embodiment of the clamping spring can be advantageously combined with all the other described variants.
The thickness of the metal plate of the clamping spring can be selected in particular as a function of the nominal wire diameter or the nominal wire cross section of the connecting terminal, for example as follows:
according to an advantageous embodiment of the invention, it is provided that a connecting web projecting out of the plane of the driver opening adjoins the transverse web, said connecting web having a curvature, wherein a convex surface of the curvature faces the driver opening. In this way, a curved bearing region can be provided on the actuating leg, which bearing region can be placed in an advantageous manner on the spring driver and can slide along the latter during the pivoting movement of the actuating lever.
According to an advantageous embodiment of the invention, it is provided that the connecting web is formed integrally with the crosspiece and is bent out of the crosspiece. This allows a simple production of the clamping spring with the actuating leg, for example in a stamping and bending process.
According to an advantageous embodiment of the invention, it is provided that the free end of the actuating leg is bent out by means of a transverse web in the direction away from the spring bow. This allows for a strong bend to be provided in the connection piece without requiring an excessive degree of modification in the bending process.
According to an advantageous embodiment of the invention, it is provided that the edge formed at the free end of the web is remote from the driver opening. In this way, excessive wear of the spring driver of the actuating lever is avoided. In particular, contact between the possibly sharp-edged end edge of the web and the spring driver can be avoided.
According to an advantageous embodiment of the invention, it is provided that the width of the driver opening, which is defined by the inner distance between the lateral webs, varies over the longitudinal extent of the actuating leg, in particular decreases towards the free end of the actuating lever. The width reduction can be configured stepwise. In this way, elements of different widths, for example, on the one hand the spring driver and, on the other hand, other elements, such as, for example, parts of the clamping spring, for example, the abutment legs, can be guided through the driver opening.
In accordance with an advantageous embodiment of the invention, it is therefore provided that the abutment leg extends through the driver opening, in particular through a wide region of the driver opening. The wider region of the driver opening is the region in which the inner distance between the lateral webs is greater than in one or more further regions of the driver opening.
According to an advantageous embodiment of the invention, it is provided that the spring tongue tapers from the root region toward the clamping edge at the free end. In this way, a possible tilting of the spring tongue when the busbar is open, for example due to a possible inclined position of the clamping spring, can be avoided. The part of the clamping spring on which the clamping leg branches into the spring tongue and the actuating leg is considered to be the root region. In said portion of the clamping spring, there is thus a root of the clamping tongue and a root of the steering leg.
According to an advantageous embodiment of the invention, it is provided that the clamping leg has a clamping leg arch formed between the spring bow and the foot region, and that the actuating lever has a length from the foot region up to a force introduction region formed for applying an actuating force to the actuating leg, which is greater than a length of the clamping leg from the foot region up to an apex of the clamping spring arch. This can be achieved, for example, by: the length of the actuating lever, which is effective for actuation and is measured from the branching point of the actuating leg from the clamping leg to the curved bearing region, is greater than the length of the clamping leg, which is measured from the branching point of the actuating leg from the clamping leg to the apex of the spring bow. In this way, a spring with a shortened flexion length can be achieved. Such a clamping spring better prevents an undesired bending or buckling of the clamping leg when the fixedly clamped electrical line is pulled from the outside.
According to an advantageous embodiment of the invention, it is provided that the clamping leg has a clamping leg bow formed between the spring bow and the foot region, which clamping leg bow strikes against a part of the insulating material housing of the connecting terminal when the actuating lever is moved from the closed position into the open position. In this way, the bending length of the clamping spring can be advantageously shortened.
According to an advantageous embodiment of the invention, it is provided that the minimum width of the lateral webs is at most 20% of the maximum width of the clamping legs. In this way, very thin lateral webs can be provided, which contributes to material savings of the clamping spring and additionally to a compact design of the terminal. Since the lateral webs only have to transmit tensile forces, a very narrow form of realization is readily possible.
According to an advantageous embodiment of the invention, it is provided that the minimum width of the lateral webs is a maximum of four times the thickness of the metal sheet.
According to an advantageous embodiment of the invention, it is provided that the actuating lever has a spring driver which extends through a driver opening at least in the open position. In this way, the clamping leg can be deflected by the spring driver of the actuating lever.
According to an advantageous embodiment of the invention, it is provided that the spring driver extends through a narrower region of the driver opening at least in the open position. Since only the tensile force has to be transmitted by the actuating leg and its lateral webs, it can be designed to be correspondingly thin, which results in material savings for the clamping spring. In one embodiment of the clamping spring, at least one clamping tongue can be provided by a region stamped out of the actuating leg, in which region a driver opening is formed.
According to an advantageous embodiment of the invention, it is provided that a curved bearing region is formed on the actuating leg in the curved region of the web, wherein the actuating lever has a socket-like bearing on which the curved bearing region slides along the actuating leg of the clamping spring during a pivoting movement of the actuating lever. In this way, the curved bearing region can be guided and slid over the actuating lever reliably, without skewing and with low friction. The socket bearing can be arranged in particular on the spring driver.
The curved support region can have a constant curvature or a varying curvature. In any case, there is a curvature and no sharp edges or bends over the entire extension of the curved bearing region. The minimum radius of curvature of the curved bearing region can be greater than or equal to half the thickness of the sheet metal of the clamping spring.
According to an advantageous embodiment of the invention, it is provided that the actuating leg, starting from the clamping leg, first extends along the first busbar section and protrudes out of the bending region of the busbar at least by means of a part of the driver opening. In this way, the spring driver can be introduced into the driver opening without being impeded by the busbar. In addition, the terminal can be designed particularly compact, for example, in the following manner: the actuating leg runs closely along the first busbar section.
According to an advantageous embodiment of the invention, it is provided that the actuating leg of the clamping spring slides at least partially over the busbar when the clamping leg is displaced. Accordingly, the actuating leg is additionally guided by the bus bar when the actuating lever is pivoted.
In particular, in the closed position, the actuating lever can extend at least approximately parallel to the busbar, for example parallel to the first busbar section, when no electrical line is clamped at the clamping point. In this way, the terminal can be realized in a particularly compact manner. Furthermore, in the manner described, a relatively large lever arm for actuating the clamping leg is realized. This can reduce the operating force of the joystick. In the substantially parallel region between the actuating leg and the busbar, a small distance between the actuating leg and the busbar can be achieved, which likewise contributes to a compact design of the connecting terminal. For example, the distance between the actuating leg and the busbar in this region can be less than the material thickness of the busbar in this region or less than twice the material thickness of the busbar.
According to an advantageous embodiment of the invention, it is provided that the actuating lever has a spring follower which does not contact the actuating leg in the closed position. Wear between the spring driver and the actuating leg is thus avoided in the closed position. The spring driver can extend completely at least partially into the driver opening.
According to an advantageous embodiment of the invention, it is provided that the actuating lever has a spring catch which, in the closed position, does not extend into the catch region of the clamping spring, for example into a catch opening. This maximizes the distance between the spring driver and the actuating leg.
According to an advantageous embodiment of the invention, it is provided that a guide element is formed on the insulating material housing, which guide element forms a housing-side guide of the actuating leg at least in certain actuating situations and/or pivoting positions of the actuating lever. The guide element can guide the actuating leg in particular when the actuating leg executes a pivoting movement close to the open position. In this way, excessive deflection or bending of the actuating leg is counteracted, in particular at the transition to the clamping leg. Furthermore, with this embodiment, the actuating lever first executes a certain idle stroke during the pivoting movement from the closed position into the open position, without the actuating force caused by the clamping spring. The lever can therefore be actuated initially substantially without any effort, for example by means of a finger tip, in order to be able to subsequently be gripped well manually.
According to an advantageous embodiment of the invention, it is provided that the payload arm of the joystick is shorter in the open position than in the closed position. This allows the joystick to be manipulated ergonomically and tactilely comfortably. In particular, to end the pivoting movement in the direction of the open position, the actuating force is maintained at a comfortable level, for example at a force level that is substantially constant within the pivoting angle, by means of the changed transmission ratio when the spring force of the clamping spring increases.
According to a preferred embodiment of the invention, it is provided that the transverse webs and/or the curved bearing regions slide along the spring driver, in particular along the socket bearings, when the actuating lever is moved from the closed position into the open position, and approach the instantaneous center of the actuating lever, i.e. the instantaneous center of action respectively during the pivoting movement of the actuating lever. In this way, a shortening of the load arm upon an opening movement of the operating lever can be achieved in a reliable manner. The cross-piece can be, for example, at least 5% or at least 10% of the length of the spring driver when the lever is moved from the closed position into the open position.
According to an advantageous embodiment of the invention, it is provided that the terminal has at least one force reduction means by means of which the setting force can be reduced when the actuating lever is released from the locked open position and/or when the actuating lever is locked into the open position. In this way, the contact point loaded with the setting force is relieved when the actuating lever is released. This has the advantage that the release of the actuating lever is simplified and wear at the elements that are in contact with one another can be reduced or even avoided. By means of the force reduction mechanism, the value of the setting force can be reduced more or less, depending on the embodiment, until the setting force is completely removed (setting force equal to zero). Accordingly, the elements loaded with the setting force at the contact points are separated from each other by the force reduction means. For example, the region of the actuating lever for bearing on the busbar can be lifted off the busbar.
According to an advantageous embodiment of the invention, it is provided that the force reduction means is formed at least partially by mechanical elements of the actuating lever, of the clamping spring and/or of the insulating material housing. Accordingly, no additional components for forming the force reduction mechanism or at least a major part thereof are required. The force reduction mechanism can accordingly be realized in a very simple manner without complex construction.
According to an advantageous embodiment of the invention, it is provided that the mechanical element is formed by a cooperating contour of the actuating lever, the clamping spring and/or the insulating material housing. This also allows a simple implementation of the force reduction mechanism. For example, the force reduction means can be formed by the first seating point in combination with the point of action of the clamping spring on the actuating lever, for example by a contact point between the first fastening element of the actuating lever and the second locking edge of the insulating material housing, in combination with a socket-like bearing of the actuating lever and a curved bearing region formed on the actuating leg of the clamping spring. The two contact points, namely the first contact point and the contact point between the actuating lever and the clamping spring, can be provided in such a way that, when the actuating lever is moved in the direction from the open position into the closed position, a tilting moment is first generated which causes a release of the contact point of the actuating lever on the busbar and the aforementioned lifting of said point.
According to an advantageous embodiment of the invention, it is provided that the setting force can be reduced by the force reduction means to an absolute value which is smaller than the absolute value of the force which acts on the actuating lever by the clamping spring via the actuating leg. In this way, the contact point between the fastening element provided on the actuating lever and the mating fastening element can be reduced such that the mentioned lifting of the actuating lever can be achieved there.
According to an advantageous embodiment of the invention, it is provided that the force reduction means are designed to reduce the setting force by displacing the force of the clamping spring acting on the actuating lever onto a further contact point of the actuating lever, at which the actuating lever is supported in the connecting terminal. This has the advantage that the reduction in the setting force produced by the force reduction mechanism has no disturbing effect on the user and the user does not feel an excessive increase in the force consumption, in particular when the actuating lever is released.
According to an advantageous embodiment of the invention, it is provided that the actuating lever is supported in the terminal at a main contact point via which the force of the clamping spring acting on the actuating lever with the greatest absolute value can be transmitted to at least one further element of the terminal, wherein the main contact point changes discontinuously at least two times, at least three times or at least four times when the actuating lever is pivoted via its pivot region. The location of the main contact point can thus be changed several times during the pivoting movement of the joystick. The change can in particular take place discontinuously, i.e. stepwise. This is also considered an independent aspect of the invention. By virtue of the variability of the location of the main contact points, a pivot mechanism of the joystick can be realized, which enables a relatively complex, discontinuous movement sequence, which in turn enables particular advantages with regard to the haptic sensation for the user and protection of the component. In this case, however, a relatively complex movement sequence can be achieved by means of design features that can be implemented relatively simply, so that the terminal can still be produced cost-effectively.
According to an advantageous embodiment of the invention, it is provided that the first point of the main contact point is formed between the busbar and a region of the actuating lever which is arranged on the busbar in the fixed open position. The first location of the main contact point can be, for example, a second mounting point.
According to an advantageous embodiment of the invention, it is provided that the actuating lever is seated in the open position on a first seating point and a second seating point different therefrom, wherein the actuating lever is seated on the insulating housing in the first seating point and on the busbar in the second seating point, wherein the second point of the main contact point is formed on the first seating point of the actuating lever on the insulating housing.
According to an advantageous embodiment of the invention, it is provided that the actuating lever has at least one laterally projecting bearing element which is spaced apart from the busbar over the entire pivot range, and the third point of the main contact point is formed between the lateral bearing element of the actuating lever and the insulating material housing. The laterally projecting bearing element therefore does not have the function of a pivot axis in the sense of a fixed bearing, but only temporarily forms a bearing of the actuating lever in the sense of a support relative to the insulating material housing in the particular pivoting situation of the actuating lever.
According to an advantageous embodiment of the invention, it is provided that the actuating lever has a first guide section which, at least via a partial region of the pivot region, dips into a recess in the busbar, wherein a fourth point of the main contact point is formed between the first guide section and the insulating material housing.
According to an advantageous embodiment of the invention, it is provided that the actuating lever has at least one mounting lug for mounting the actuating lever on the busbar, which mounting lug projects laterally from the actuating lever relative to the first guide section, wherein a fifth point of the main contact point is formed between the mounting lug of the actuating lever and the busbar.
According to an advantageous embodiment of the invention, it is provided that the first seating point forms a first instantaneous center of the pivoting movement of the actuating lever when the actuating lever is released from the locked open position. In this way, it is advantageously possible to realize multiple functions of the first positioning point, namely in the open position for positioning the actuating lever and its fixing, and as a momentary center and a second point of the main contact point when the actuating lever is released.
The connecting terminals described above can be designed, for example, as rail-mounted terminals, for example, as the rail-mounted terminals mentioned at the outset.
According to an advantageous embodiment of the invention, it is provided that the first line connection element has a tool-free actuating lever, wherein the actuating lever is pivotably mounted in the insulating material housing for actuating the spring-loaded clamping connection element of the first line connection element, and the actuating lever has a manual actuating section for manually actuating the actuating lever. This allows a comfortable handling of the first wire connection without the need for additional tools.
According to an advantageous embodiment of the invention, it is provided that the actuating section of the actuating lever of the rail-mounted terminal extends at least partially beyond the outer contour of the insulating material housing during the entire pivoting process. In particular, the free end of the manual actuating section (actuating handle) of the actuating lever can therefore project beyond the outer contour of the insulating material housing. This allows for simple manipulation of the joystick near the closed position.
According to an advantageous embodiment of the invention, it is provided that the actuating lever automatically maintains the open position when it is moved into the open position. This is ensured by the construction of the connection terminal. For example, the automatic holding of the operating lever in the open position can be achieved by the positioning on the first and second positioning points. In addition, the actuating lever can thus be held in the open position, so that it can be pulled onto the first and second seating points by means of the tensile force exerted on the actuating lever by the clamping spring.
In general, the actuation of the terminal by means of the actuating lever differs from the prior art in that the actuating lever transmits a tensile force via its spring driver to the clamping spring in order to deflect the clamping leg. Accordingly, no pressure is transmitted, as is the case, for example, in actuating solutions with a press. Another difference is the type of manual manipulation of the joystick as opposed to the press. In the present invention, it is advantageous if the actuating lever is manually acted upon by a pulling force on the manual actuating section in order to move the actuating lever from the closed position into the open position. During said movement, the manual operating force can also become a pressure force.
In contrast to the proposals in the prior art, the connection terminal according to the invention can be designed such that the conductor insertion opening is designed as part of the insulating material housing and not as part of other elements, such as, for example, a control lever. In this way, good accessibility of the conductor insertion opening and the electrical conductor inserted into the conductor insertion opening can be achieved.
According to an advantageous embodiment of the invention, it is provided that the actuating lever is mounted in an insulating material housing, i.e. that a corresponding mounting element is formed in the insulating material housing.
In the rail-mounted terminal mentioned, there can be one or more first wire connections and/or one or more second wire connections.
According to an advantageous embodiment of the invention, it is provided that the second wire connection part has an actuating opening for introducing a separate actuating tool for opening the second clamping point. This allows a simple manual actuation when opening the second clamping point. The lever is part of the rail mounted terminal and the separate operating tool is not part of the rail mounted terminal and is thus "separate". The actuating tool can be a screwdriver, for example.
Alternatively, the second clamping point can also have a lever actuation for opening, for example by: the rail-mounted terminal is designed with a further actuating lever for opening the second clamping point.
According to an advantageous embodiment of the invention, it is provided that the second line connection has an actuating element designed as a press for opening the second clamping point. The pressing piece can be part of a rail-mounted terminal.
The second conductor connecting part can also be designed as a spring-loaded clamping connecting part, like the first conductor connecting part, with a clamping spring for the clamping connection of the second electrical conductor.
According to an advantageous embodiment of the invention, it is provided that the second line connection has a knife clamp connection or a screw connection for connecting the second electrical line. This allows an alternative embodiment of the second wire connection part if the second wire connection part is to be designed as a spring-loaded clamping connection part.
According to an advantageous embodiment of the invention, it is provided that the actuating section of the actuating lever of the rail-mounted terminal extends at least partially beyond the outer contour of the insulating material housing during the entire pivoting process. This allows for simple manual manipulation of the joystick. The joystick is easily graspable and easily manipulatable with a finger. Furthermore, the actuating section can be easily touched.
According to an advantageous embodiment of the invention, it is provided that the first line connection has a first busbar section to which the first electrical line can be connected by means of a clamping spring, and that the second line connection has a third busbar section to which the second electrical line can be connected, wherein the first busbar section is electrically conductively connected to the third busbar section or can be connected via an electrical connection element of the rail-mounted terminal. The first and third busbar sections can be part of a common busbar, i.e. permanently connected to one another, or busbar sections which are separate from one another and which are connected to one another only when required, as in rail-mounted terminals, for example.
According to an advantageous embodiment of the invention, it is provided that the rail-mounted terminal has a busbar which is continuous from the first busbar section to the third busbar section. Accordingly, the bus bar establishes an electrically conductive connection from the first bus bar section to the third bus bar section. The bus bar can be formed in one piece or consist of separate parts.
The busbars can run linearly or at least substantially linearly in the second busbar section and in the third busbar section. The busbar can also have one or more steps in the second busbar section and/or in the third busbar section, for example such that, starting from the bending region, in the second busbar section and/or in the third busbar section, the step of the busbar which continues further down than the bending region adjoins the region of the second and/or third busbar section which precedes the bending region. In this way, the lower conductor connection point in the second and/or third busbar section is realized, whereby the connecting terminal can be designed particularly compactly and with reduced dimensions.
According to an advantageous embodiment of the invention, it is provided that the first wire connection part has a first wire insertion opening, the second wire connection part has a second wire insertion opening, and the actuating lever is arranged at least with its longitudinally extending main part between the first and second wire insertion openings. In this way, the actuating lever is arranged relatively centrally in the rail-mounted terminal, so that less additional installation space is required.
According to an advantageous embodiment of the invention, it is provided that the first conductor connection piece has a first conductor insertion direction in which the first electrical conductor can be guided to the first clamping point via the first conductor insertion opening, and the second conductor connection piece has a second conductor insertion direction in which the second electrical conductor can be guided to the second clamping point via the second conductor insertion opening, wherein the first conductor insertion direction is arranged at an angle offset to the second conductor insertion direction. This allows a simple handling of the rail mounted terminal when connecting the first and second electrical conductors, in particular when the rail mounted terminal has been fastened to the carrier rail. Then, the two wire introduction openings are easily accessible. The angular deviation can, for example, have at least 30 °.
According to an advantageous embodiment of the invention, it is provided that the rail-mounted terminal has at least one carrier rail fastening element on the carrier rail fastening side, by means of which the rail-mounted terminal can be fastened to the carrier rail. This allows for a reliable and standard-compliant fastening of the rail mounted terminals and the alignment of the plurality of rail mounted terminals on the carrier rail.
According to an advantageous embodiment of the invention, it is provided that the first conductor insertion opening is completely or at least partially visible in a plan view of the housing side of the rail-mounted terminal facing away from the fastening side of the carrier rail. In this way, it is easy for the user to see where the first electrical conductor should be introduced, in particular when the rail-mounted terminal has been fastened to the carrier rail.
According to an advantageous embodiment of the invention, it is provided that the first conductor insertion opening is arranged below the actuating lever in a plan view of the housing side of the rail-mounted terminal facing away from the fastening side of the carrier rail and is completely or at least partially visible in each pivot position of the actuating lever. The first line insertion opening is therefore also at least partially visible, i.e. it is at least not completely covered by the actuating lever. However, it is possible to arrange the actuating lever in an ergonomically advantageous and space-saving manner and in particular to allow the actuating section of the actuating lever to extend to some extent beyond the outer contour of the insulating material housing.
According to an advantageous embodiment of the invention, it is provided that the actuating lever enters into a housing side of the insulating material housing of the rail-mounted terminal facing away from the fastening side of the carrier rail. This allows a space-saving arrangement in case the joystick is well accessible.
According to an advantageous embodiment of the invention, it is provided that the outer surface of the manually actuated section of the actuating lever in the closed position at least follows the contour of the surface of the insulating material housing adjoining the outer surface of the manually actuated section. Accordingly, the outer surface of the manually actuated section is adapted to the surface contour of the insulating material housing such that essentially no shoulder or step-like transitions occur there. The outer surface of the manually actuated section can thus form a continuous surface with the housing upper side of the insulating material housing.
According to an advantageous embodiment of the invention, it is provided that the actuating lever is designed to be self-retaining in the open position. This has the advantage that the joystick does not have to be held securely by the user. The actuating lever can be locked, for example, by one or more first, second or fourth fixing elements.
In the scope of the present invention, the indefinite article "a" or "an" is not to be understood as a word of number. Thus, if for example one component is mentioned, this is to be understood in the sense of "at least one component". As long as the angular specification is made in degrees, this relates to a circumference of 360 degrees (360 °).
Drawings
The invention is explained in detail below with the aid of embodiments using the figures.
The figures show:
fig. 1 shows a side sectional view of the connecting terminal in the closed position, an
Fig. 2 shows a side sectional view of the connecting terminal according to fig. 1 in another sectional plane, an
Fig. 3 shows a side section through the terminal according to fig. 1 with the lever part open, an
Fig. 4 shows a side section through the connecting terminal according to fig. 1 in the open position, an
Fig. 4a shows a side view of the connection terminal according to fig. 1 in the open position, an
Fig. 5 shows the connecting terminal according to fig. 1 to 4 in the sectional plane F marked in fig. 4, and
fig. 6 shows the connecting terminal according to fig. 1 to 4 in the sectional plane G marked in fig. 4, and
FIG. 7 shows a front view of a joystick, an
FIG. 8 shows a side view of the joystick according to FIG. 7, an
Fig. 9, 9a show perspective views of the joystick according to fig. 7 and 8, and
fig. 9b shows a perspective view of the connecting terminal according to fig. 1 in the open position, an
FIG. 9c shows a side view of the joystick according to FIG. 7, an
FIG. 10 shows a side view of a clamping spring, an
Fig. 11 shows a perspective view of the clamping spring according to fig. 10, an
Fig. 12 shows a perspective view of a device composed of the actuating lever according to fig. 7 to 9 and the clamping spring according to fig. 10 to 11, and
FIG. 13 shows a perspective view of a busbar, an
FIG. 14 shows a side view of the busbar according to FIG. 13, an
FIG. 15 shows a perspective view of a hybrid rail-mounted terminal, an
FIG. 16 shows a side view of another embodiment of a clamping spring, an
Fig. 17 shows a perspective view of the clamping spring according to fig. 16, an
Fig. 18 shows a view similar to fig. 1 of a connecting terminal and a clamping spring according to fig. 16 to 17, and
fig. 19 shows another side view of the connection terminal according to fig. 4, an
Fig. 20-22 show the course of movement as the lever moves from the open position in the direction of the closed position and back.
The reference numerals used in the drawings have the following assignments:
1 connecting terminal
2 insulating material housing
20 lead-in opening
21 first locking edge
22 bus duct
23 test opening
24 Top plate
25 rod feed-through slot in the top plate
26 intermediate wall between the contact leg and the spring driver
27 outer contour of insulating material housing
28 receiving groove in the insulating material housing for receiving the second fastening element in the closed position
29 overload protection element
3 bus bar
30 first busbar section
31 second busbar section
32 material flange
33 recess
34 mounting region for mounting a rod
35 bending region and simultaneously engaging the fixing element
36 wire lead-through opening
37 third busbar section
4 clamping spring
40 leg support
41 spring bow
42 operating leg
43 clamping leg
44 clamping tongue
45 clamping edge
46 actuator opening for an actuator lever
47 lateral tab of control leg
48 crosspiece of joystick
49 curved bearing area
5 operating lever
50 Manual operation section (operation handle)
51 test blank
52 first fixing element
53 second fixing element
54 spring driving piece (driving gear)
55 second guide section
56 lateral support element
57 first guide section
58 for mounting on a busbar
Socket-shaped support part of 59 operating rod
60 third fixing element for locking in the closed position
61 first spring driver region
62 second spring driver region
63 third spring driver region
64 fourth fixing element
65 outer surface of manually manipulated section
6 first wire connecting piece
7 first clamping point
8 second wire connecting piece
9 second clamping point
80 manipulation opening
81 further actuating element
82 load rail fastening element
83 upper side of the insulating material housing
84 first placement location
85 second seat area
86 straight connecting line
87 line of action
88 rod opening
89 lateral notches in the lever
90 clamping leg arch
91 second locking edge
92 electric lead
93 connecting sheet
94 stop for rear side of operating lever
95 guide element on a housing of insulating material
96 clamping spring root region
Lead-in direction of the first lead connection of L1
Lead-in direction of the second lead connection of L2
Angle alpha
M1 first instant center
M2 point
K1, K2, K3 and K4 main contact parts
Detailed Description
The connecting terminal 1 has an insulating housing 2, a busbar 3, a clamping spring 4 and an actuating lever 5 as actuating elements for actuating the clamping spring 4.
The insulating material housing 2 has a conductor insertion opening 20, through which an electrical conductor can be inserted in a conductor insertion direction L1 and guided to the first clamping point 7 of the first conductor connection piece 6, where it can be clamped securely by spring force by means of the clamping spring 4 and the busbar 3. The insulating material housing 2 also has a busbar channel 22, through which at least a part of the busbar 3 is guided and at least partially fixed and/or supported there.
The busbar 3 has a first busbar section 30 and a second busbar section 31. The first busbar section 30 is connected to the second busbar section via a bending region 35, so that the busbar 3 as a whole has a curved and/or bent shape. The second bus section 31 is at least largely arranged within the bus duct 22. The busbar 3 has a line feed opening 36 in the first busbar section 30, through which the electrical line to be clamped securely is fed. The line feed opening 36 can be surrounded by a side wall formed on the first busbar section 30, which can be formed, for example, in the form of a material web 32. For example, the conductor lead-through opening 36 has wall sections extending from the bus bar plane on all sides, which form the material webs 32.
The clamping spring 4 has an abutment leg 40, via which the clamping spring 4 is supported against a spring force introduced by a clamping leg 43. The contact leg 40 can be supported on the busbar 3 in the first busbar section 30. The support is effected, as shown, for example, by the free ends of the legs 40 abutting against the inner side of the wire passage opening 36 and/or the material web 32. The clamping spring 4 extends from the abutment leg 40 via the spring bracket 41 to the clamping leg 43. The actuating leg 42 projects from the clamping leg 43, wherein the actuating leg 42 is bent out of the clamping leg 43 at a relatively large angle, for example greater than 45 degrees or greater than or equal to 90 degrees. The actuating leg 42 terminates at its free end with a crosspiece 48, which delimits at the end a driver opening 46, which is not visible in fig. 1. In the region of the free end of the actuating leg 42, the material section of the clamping spring material is bent into a web 93 which projects from the remaining extension of the actuating leg 42 and has at least a part of the bent bearing region 49 of the actuating leg 42. The curved bearing region 49 together with the socket bearing 59 of the actuating lever 5 forms a bearing arrangement of a cylinder and a cylinder housing, similar to a ball-and-socket bearing arrangement.
Furthermore, the clamping leg 43 continues to a clamping tongue 44, which is bent out of the clamping leg 43 in the opposite direction to the actuating leg 42. The clamping tongue 44 terminates at the free end of the clamping leg 43 with a clamping edge 45. The clamping edge 45 together with the busbar 3, i.e. the conductor lead-through opening 36 and/or the material bead 32, forms a first clamping point 7 of the first conductor connection part 6 for the electrical conductor to be clamped there. Accordingly, the contact legs 40 and the clamping tongues 44 are inserted into the conductor lead-through openings 36.
The connection terminal 1 has a control rod 5 which is arranged for the most part in the region enclosed by the insulating material housing 2 and which extends substantially outwardly with a manual actuating section 50, for example an actuating handle, where manual actuation of the control rod 5 is possible. By means of manual actuation of the actuating lever 5, the first clamping point 7 can be opened or closed. If the actuating lever 5 is in the closed position shown in fig. 1, the first clamping point 7 is also closed. If the actuating lever 5 is moved into the open position (as shown in fig. 4), the first clamping point 7 opens. In the open position, the electrical line can be inserted into or removed from the first clamping point 7 without any effort, since the clamping edge 45 is moved away from its contact on the busbar 3 or the electrical line by actuating the actuating lever 5.
The wire insertion direction L can be oriented obliquely to the direction of extension of the manually actuated section 50. Accordingly, an angle can be formed between an extension of the outer face of the manual actuation section 50, which extends approximately flush with the housing surface, and the line insertion direction L1. The angle can be relatively small, for example in the range of 20 to 60 degrees.
The actuating lever 5 is pivotably supported in the insulating material housing 2. Here, no fixed bearing axis is provided, but rather the actuating lever 5 can also perform a certain displacement movement during the pivoting movement from the closed position to the open position and vice versa.
The actuating lever 5 has a test recess 51 which penetrates the actuating lever 5, for example in the region of the manual actuating section 50. In the closed position, the test recess 51 is substantially flush with the test opening 23 of the insulating-material housing 2. The test opening 23 extends to the clamping spring 4, for example to the spring bow 41. If a test rod is introduced through the test recess 51 and the test opening 23, the clamping spring 4 can be electrically contacted and an electrical measurement can be carried out in the manner described. The clamping spring 4 is here fixed via an overload protection element 29, so that a seat for the test rod is provided. In addition, excessive movements and loading of the clamping spring 4 are prevented by means of an overload protection element 29 in the insulating material housing 2. The overload protection element 29 can be designed as an island-shaped material region of the insulating material housing 2, which is arranged within the spring bracket 41.
In the open position, the clamping spring 4 can rest against the overload protection element 29, i.e. against the overload protection element 29, by means of one or more regions, for example the spring bow 41 and/or the clamping leg 43.
The actuating lever 5 is guided, supported and fixed in the connecting terminal 1 in a plurality of ways in defined positions, such as a closed position and an open position. In this case, the actuating lever 5 has a first fastening element 52 in the lower region, i.e. in the part of the actuating lever 5 remote from the manual actuation section 50, and a second fastening element 53 in the rear region, i.e. in the region remote from the spring driver 54. The first and/or second fixing elements 52, 53 can be designed, for example, as locking elements. The first and/or second fixing elements 52, 53 can be formed as material projections or bulges. The fastening elements 52, 53 can be molded directly on the material of the actuating lever 5. The actuating lever 5 furthermore has a first guide section 57, via which the actuating lever 5 is guided in the pivoting movement, in particular in the busbar 3, and is protected against lateral tilting. The first guide section 57 extends through a recess 33 of the busbar 3, for example the recess 33 in the first busbar section 31. The recess can be configured, for example, as a longitudinal slot. If the lever 5 is pivoted, for example from the closed position into the open position, the first guide section 57 extends through the recess 33. Furthermore, it can be provided that the actuating lever 5 is additionally supported and/or guided in the pivoting movement by the second fastening element 53 along an inner guide contour of the insulating material housing.
As mentioned, the actuating lever 5 serves to actuate the clamping spring 4. For this purpose, the actuating lever 5 has a spring catch 54 which is shaped like a catch tooth and which, in the installed state, projects out of the actuating lever 5 in the direction of the clamping spring 4, in particular in the direction of the actuating leg 42. In this case, the spring driver 54 is not engaged with the actuating leg 42 first in the closed position, so that no spring load acts on the actuating lever 5 in the closed position. The spring catch 54 can be located, for example, at least in the closed position in the region of the bending region 35 of the busbar 3. The spring driver 54 transitions at the curved inner contour of the actuating lever 5 into a bearing region of the actuating lever 5, which in this case forms a socket bearing 59. As is also explained below, the socket-like bearing 59 interacts with the curved bearing region 49 of the clamping spring 4 during the pivoting movement of the actuating lever 5.
The actuating lever 5 is secured in the closed position shown in fig. 1 by means of a mechanism other than the first and second securing elements 52, 53. In the closed position, the second fastening element 53 is arranged in the free space of the insulating material housing 2, to be precise in the receiving groove 28. The second fastening element 52 is located in the vicinity of a first locking edge 21 of the insulating material housing 2, which, however, does not have a substantial function in the closed position. A second locking edge 91 is also formed in the insulating housing 2, which second locking edge has a function as described further below in the open position of the actuating lever 5. Likewise, the construction and function of the second guide section 55 of the joystick 5 are discussed below in terms of additional drawings. By accommodating the second fixing element 53 in the accommodating groove 28, it is possible to prevent the actuating lever 5 from falling out of the insulating material housing 2 in the closed position. Furthermore, the accommodation of the second fastening element 53 in the accommodation groove 28 ensures that the actuating lever 5 pivots out when it is pivoted out of the rebound position when the actuating lever 5 is moved from the open position into the closed position. A further prevention of the release or removal of the actuating lever 5, in particular in the open position, is achieved by the top plate 24.
A guide element 95 is also formed on the insulating housing 2. The guide element 95 forms a housing-side guide of the actuating leg 42 at least in certain actuating situations and/or pivoting positions of the actuating lever 5. Thus, the steering leg 42 can slide at least partially along the guide element 95, for example during a pivoting movement of the steering lever into the open position.
The terminal 1 visible in fig. 1 can be designed as a separate connecting clip or as a part of a terminal comprising a further wire connecting piece, as shown. For example as part of a connecting terminal as also explained below with reference to fig. 15.
Fig. 2 shows a top plate 24, which is arranged below the manual actuation section 50, i.e. a limiting wall of the insulating material housing 2, as a further feature of the insulating material housing 2, for shielding the current-conducting elements within the connecting terminal 1 from the outside environment, so that in particular in the open position of the actuating lever 5, a contact-safety (finger-safety) of the connecting terminal 1 is provided. The top plate 24 interacts with a second guide section 55, as is also explained below with reference to the further sectional views.
Furthermore, it can be seen that the outer surface 65 of the manual actuation section 50 runs substantially parallel to the second busbar section 31 and/or the third busbar section 37, which is also explained below.
First, the function of the actuating lever 5 during pivoting starting from the closed position shown in fig. 1 is explained in accordance with fig. 3. In fig. 3, the lever 5 is not yet fully in the open position, but shortly before it. The spring driver 54 does not sink into the driver opening 46 in the closed position, while the spring driver 54 then engages into the driver opening 46 when the actuating lever 5 is moved pivotally from the closed position into the open position.
The associated elements of the actuating lever 5 and their interaction with the further elements of the connecting terminal 1 will be explained by the enlarged detail A, B and C drawn in fig. 3.
As can be seen from the drawing a, the first fastening element 52 is not far before the second locking edge 91 is reached. Likewise, as shown in the drawing C, the second fastening element 53 is not far before the first locking edge 21 is reached. The rear stop 94 of the actuating lever 5 on the insulating material housing 2 in the region of the outside of the insulating material housing now serves as a stop and pivot point for the actuating lever 5 for the further movement of the actuating lever 5 in order to reach the open position according to fig. 4. In this further movement, the spring driver 54 moves essentially first in translation along the second busbar section 31. As soon as the second fastening element 53 exceeds the first locking edge 21, the actuating lever 5 is moved "downward", which is oriented substantially perpendicular to the translational movement, by the spring force exerted on the spring driver 54.
The diagram B shows how the actuating leg 42 has been gripped at the end by the spring driver 54 and is guided further via the socket 59. The shape of the socket bearing 59, i.e. the concave inner contour, is adapted to the convex outer contour of the curved bearing region 49, so that the curved bearing region 49 can slide within the socket bearing 59 with low friction. As can be seen from the overall view of the connection terminal in fig. 3, the actuating leg 42 is deflected in this case and the clamping leg 43 is moved accordingly, so that the clamping tongue 44 is moved further from its initial position, which is visible in fig. 1. It can also be seen that in the described configuration, the payload arm of the joystick 5 is shortened in the opening movement, since the curved bearing region 49 slides along the socket bearing 59 and approaches the virtual pivot axis of the joystick 5 here.
Fig. 4 shows the operating lever 5 now in the open position, i.e. at the end of the pivoting movement. In the open position, the actuating lever 5 can also be pressed too far at a small pivot angle, for example a maximum of 5 degrees or a maximum of 10 degrees, in order to counteract damage, but has already reached the actual open position in the position shown in fig. 4. If the actuating lever 5 is pressed excessively, the movement of the excessive pressing is limited by a rear stop 94 on the insulating material housing. With regard to the entire pivot path or pivot angle of the lever 5, the oversteering angle range of the lever 5 amounts to a maximum of 5% of the entire pivot angle range until the rear stop 94 is reached.
The actuating lever 5 is in each actuating position for the most part located within the region enclosed by the outer contour 27 of the insulating material housing 2. In particular, the actuating lever 5 is also located in the open position in its main region extending longitudinally, at least by a minimum of 30% or a minimum of 40%, within the region enclosed by the outer contour 27 of the insulating-material housing 2. In this way, the operating lever 5 is particularly robustly supported so as not to be easily damaged and/or not to be easily tilted. This achieves a robust support of the actuating lever 5 in the insulating material housing 2.
As shown in the enlarged detail views D and E, the first fastening element 52 is now locked behind the second locking edge 91 and the second fastening element 53 is locked behind the first locking edge 21. In addition to the pure pivoting or pivoting movement, i.e., in the transition from the position according to fig. 3 to the position according to fig. 4, the actuating lever 5 additionally executes a displacement movement, i.e., it is moved with a certain amount of displacement path oriented along the second busbar section 31 toward the first clamping point 7, in order to lift the fourth fixing element 64 above the bending region 35 of the busbar 3 and then, perpendicular to the displacement movement, is lowered into the dead point position, so that at least a part of the bending region 35 engages in a form-fitting manner in the fourth fixing element 64. The displacement movement does not have to be carried out by the user, but is caused by the stop 94 and the spring tension, which the actuating leg 42 exerts on the actuating lever 5. As can be seen in fig. 4, the operating lever 5 is now held firmly in this position by: the actuating lever 5 is pulled by the pulling force exerted by the actuating leg 42 onto the respective seating points 84, 85, which are arranged to the left and right of the line of action of the pulling force, namely on the one hand the first seating point 84 formed between the first fastening element 52 and the second locking edge 91 and on the other hand the second seating point 85 in the region of the part F. The second seating point 85 can be formed between the fourth fixing element 64 and the corresponding bending region 35 of the busbar.
In the opposite movement of the actuating lever 5, i.e. from the open position into the closed position, the contact between the fourth fastening element 64 and the bending region 35 at the busbar 3 is removed at the second seating point 85 in the following manner: the second fastening element 53 rises above the first locking edge 21 (see also detail C, fig. 3). In this case, the actuating lever 5 is first pivoted about the first seating point 84 between the first fastening element 52 and the second locking edge 91. Thus, wear at the fourth fixing element 64 is avoided.
In the open position, the two-point mounting of the actuating lever 5 on the insulating housing 2 and/or the busbar 3 and the clamping spring 4 via the substantially central force action of the actuating leg 42 can thus stabilize the position of the actuating lever 5. By means of this force transmission, a funnel-shaped force effect is achieved, by means of which undesired position changes of the actuating lever 5, for example due to vibrations, are particularly securely prevented.
Fig. 4a illustrates, in particular in a detail H, how a fourth fastening element 64 is placed on the bending region 35 and fastened there in a form-fitting manner. The second fastening element 53 passes out of the recess 33 of the busbar 3, so that a part of the second fastening element 53 projects below the second busbar section 31 and is visible there.
Fig. 4a furthermore illustrates the placement of the curved bearing region 49 of the actuating leg 42 on the socket bearing 59.
Fig. 4 also shows that the electrical conductor 92 is inserted into the connection terminal 1 with an end-side stripped region and that the stripped region is arranged in the region of the first clamping point 7. If the actuating lever 5 is now moved into the closed position again, the clamping leg 43 springs back until the clamping edge 45 comes to bear against the stripped region of the electrical line 92 and presses it against the busbar 3, for example against the inner side of the line feed opening 36 or the material flange 32.
Between the contact leg 40 and/or the spring bracket 41 and the inner region of the insulating material housing 2, in which the second guide section 55 is arranged in the closed position and the spring catch 54 is arranged in the open position, there is an intermediate wall 26 of the insulating material housing 2, which has a second locking edge 91. Said intermediate wall 26 causes an additional separation between the actuating lever 5 and the electrical component, in particular the clamping spring 4.
A further advantageous aspect of the embodiment is that the intermediate wall 26 is supported and counter-supported against the setting force of the actuating lever 5 again by the clamping spring 4 at the first setting point 84, since the clamping spring 4 presses against the intermediate wall 26 from opposite sides in the region of the contact legs 40 and/or the spring bracket 41. In this way, a self-supporting system can advantageously be realized. In this way, the plastic component is also supported on the metal component, which induces or introduces forces, which is advantageous in the case of moisture effects, which lead to a reduction in the stability of the plastic material.
Two sectional planes F and G are drawn in fig. 4. The corresponding sectional plane is drawn in fig. 5 and 6, wherein the lever 5 is in the closed position. As shown in the sectional view in section plane F of fig. 5, the actuating rod 5 is arranged with its first guide section 57 in the recess 33 in the second busbar section 31 and is guided longitudinally therein. For additional guidance and support, the actuating lever 5 has a laterally projecting support element 56, which can be embodied as a support pin. Via the lateral bearing elements 56, however, the actuating lever 5 is not fixedly mounted about a non-variable axis of rotation, but rather can be moved within a certain range. In this way, the actuating lever is supported "floating" in the insulating material housing 2.
It can also be seen that the actuating lever 5 is supported on the upper side of the busbar 3, in particular in the second busbar region 31, via a laterally projecting shoulder-shaped mounting projection 58. In particular, the mounting projection 58 can form a mounting point for the actuating lever 5 on the busbar 3 in the open position, wherein the mounting point can be arranged in the bending region 35.
The first fixing element 52 can also move along a guide contour in the interior of the insulating material housing upon a pivoting movement of the actuating lever 5, for example from the open position into the closed position. In this case, the contact between the latching projection 58 on the actuating lever 5 and the latching region 34 for supporting the movement of the actuating lever 5 in the direction of the open position can be released, wherein the actuating lever 5 is removed from the busbar 3. This also serves to reduce wear or abrasion of the actuating lever 5.
Fig. 5 shows that the actuating lever 5 does not extend beyond or substantially beyond the outer contour 27 of the insulating-material housing 2 in the closed position.
Fig. 6 illustrates the fixing of the actuating lever 5 in the closed position by means of a sectional view in the sectional plane G. The actuating lever 5 has a second guide section 55 which projects downward on the manual actuation section 50 and which extends at least in the position of the actuating lever 5 through the lever passage slot 25 in the top plate 24. A third securing element 60 projecting laterally is provided on the second guide section 55, for example integrally formed on the second guide section 55, which engages behind the underside of the edge region of the top plate 24 in the closed position and secures the actuating lever 5 in the manner described. The top plate 24 can be formed by protrusions projecting inwardly from opposite side walls of the insulating material housing 2.
In the open position, the lever passage slot 25 is closed as far as possible by the region of the actuating lever 5 having the spring catch 54, so that in this position too contact safety is ensured.
Overall, there is thus an opening in the insulating material housing 2, such as, for example, a rod passage slot 25, which in the closed position of the actuating rod 5 is pressed too far by the actuating rod 5 and is thus shielded from the outside environment, wherein the opening opens into an electrically active component arranged in the insulating material housing 2, such as the clamping spring 4 or the busbar 3, and the spring driver 54 at least partially closes the opening in the open position of the actuating rod, at least so far as to provide contact protection.
The above-described elements of the actuating lever 5 are additionally illustrated by the different views in fig. 7 to 9, which show the actuating lever 5 in a separate view. It can be seen in particular that the actuating lever 5 does not have to be embodied exactly symmetrically with respect to the pivot plane of the actuating lever 5. Instead, as illustrated in fig. 7, the spring driver 54 and the first guide section 57 connected thereto are arranged eccentrically, for example slightly offset laterally. In order to optimize the installation of the components, in particular the actuating lever 5, in the connecting terminal 1, the spring driver 54 itself can also be configured asymmetrically, for example, tapering asymmetrically on one side toward the end.
Fig. 9a shows a view of the actuating lever 5 in which the mounting lug 58 is visible. The seating surface formed by the seating projection 58 is hatched in fig. 9a for illustration.
As further illustrated, the actuating lever 5 can be designed as a material-and weight-optimized component with a row of recesses which are interrupted by reinforcing walls and which in the described manner give rise to the necessary robustness and rigidity of the actuating lever for the actuating movement. The actuating lever 5 can be produced in one piece, for example, as a plastic component, for example as an injection-molded part.
Fig. 9a furthermore shows that the actuating lever 5 can have a lateral recess 89. The lateral recess 89 can be provided, for example, in the region of the second guide section 55 and/or the third fastening element 60. The top panel 24 can be at least partially received in the lateral notches 89 in the closed position.
Fig. 9b shows the connecting terminal 1 in the open position of the actuating lever 5. As already mentioned, in the open position, the rod passage slit 25 in the top plate 24 is at least as closed as possible.
Fig. 9b furthermore shows that the insulating material housing 2 can have a rod opening 88 which allows the operating rod 5 to be inserted with the insulating material housing 2 completely installed. The actuating lever can be inserted through the lever opening 88 with the insulating material housing 2 completely installed, i.e. from above.
The rod opening 88 is completely surrounded on the circumferential side by the material of the insulating material housing 2, i.e. by a corresponding wall or other section of the insulating material housing 2.
Fig. 9c illustrates the particular scale that the joystick 5 can have according to the invention. In the longitudinal direction of the lever 5, i.e. in the direction a, the lever 5 has a length a. In the rear region, the actuating lever 5 has its bearing region, which for example comprises a third region 63. In the bearing region, the actuating lever 5 is mounted in the insulating material housing 2. In the longitudinal direction, the support area has a length c. Fig. 9c also shows a length b of the spring driver 54, which extends from a base region of the spring driver 54 adjacent to the third region 63 in the longitudinal direction of the actuating lever 5 as far as a free end. The ratio b/c can be, for example, at least 0.2 or at least 0.25 or at least 0.3. The ratio b/a can be, for example, at least 0.07 or at least 0.08 or at least 0.09.
Fig. 10 and 11 show an isolated view of the clamping spring 4. Thus, it is additionally illustrated that the clamping spring 4 has a base region 96 on the clamping leg 43, on which base region the clamping leg 43 branches off into the clamping tongue 44 and the actuating leg 42. As can be seen, the actuating leg 42 is designed with a relatively large recess, which forms the driver opening 46. Two relatively thin lateral webs 47 extend from the clamping leg 43 only to the left and right of the contact leg 40. The lateral webs 47 can be formed very thin, since they transmit pure tensile forces. Furthermore, the contact leg 40 extends through the recess. The actuating leg 42 can be produced together with the clamping tongue 44 from the same material in that: the clamping tongues 44 are separated from the material of the actuating legs 42, for example by a stamping process. Since the lateral webs 47 can be very narrow, a relatively wide intermediate material section for forming the clamping tongue 44 is thereby reserved, so that a relatively wide clamping edge 45 can be provided. This contributes to a firm grip of the electrical conductor and good electrical contact. Furthermore, a high elasticity of the actuating leg 42 is achieved by the narrow lateral webs 47. In the manner described, the actuating leg 42 is joined to the clamping leg 43 relatively flexibly.
Since the lateral webs 47 can be designed like "thin legs", they therefore act as a flexible connecting element, i.e. like a wire or rope connection, under tensile load. The relatively small bending radius R3 or the narrow bend formed thereby at the transition from the actuating leg 42 to the clamping leg 43 causes a stiffening in this region, so that under the tensile loads occurring, the lateral webs 47 are stretched to some extent and undergo little elastic deformation in the form of deflection.
The clamping spring 4 can be formed in one piece with all the features described, i.e. it is produced in one piece from a flat metal sheet, for example stamped and bent from a metal sheet having a predetermined thickness.
As can also be seen in fig. 11, the material width of the lateral webs 47 can vary over their longitudinal extent. For example, there can be a transition or step of the lateral webs 47 from the region which is initially narrower starting from the clamping leg 43 to the region which is wider toward the transverse web 48. The wider area of the lateral webs 47 is effective in particular under high spring loads. In this case, the inner distance between the lateral webs 47 in the region of the driver opening 46 in which the contact leg 40 protrudes through the driver opening 46 is greater than in the region of the driver 46 for receiving the spring driver 54.
The clamping tongue 44 can be formed in particular in a trapezoidal manner or can be narrowed toward the free end. This has the advantage that in a possible tilted position of the clamping spring 4, the clamping spring 4 does not catch on the inner side of the material web 32.
The actuating leg 42 has a transverse web 48 on the end face. A bent connecting piece 93 projects from the transverse web 48. The web 93 forms a curved bearing region 49 for placing on the socket bearing 59 of the actuating lever 5 on the underside, i.e. on the side facing the driver opening 46. The actuating leg 42 can be produced in the end-side region in such a way that the region with the crosspiece 48 is bent out of the lateral crosspiece 47 in a first bending direction and the connecting web 93 is bent out of the crosspiece 48 in a further, opposite bending direction. In this way, a relatively large angle of more than 90 degrees between the connecting web 93 and the lateral webs 47 can be achieved while avoiding an excessive degree of modification.
Correspondingly, the actuating leg 42 has two spaced-apart lateral webs 47 which are connected to one another at their free ends via a transverse web 48. The lateral webs 47 and the transverse webs 48 enclose a driver opening 46 for engaging a spring driver 54. A connecting web 93 facing the driver opening 46 adjoins the transverse web 48, said web having a curvature such that a curved bearing region 49 is formed on its convex surface by said curvature, said bearing region being designed for contact with the socket bearing 59 of the actuating lever 5.
Accordingly, the free end of the actuating leg 42, together with the crosspiece 48, is bent away from the spring bracket 41. The curvature or rounding of the curved bearing region 49 is adapted in terms of shape to the shape of the socket bearing 59.
It can also be seen that the actuating leg 42 first branches off from the clamping leg 43 relatively far at the end of the clamping leg 43, but at least closer to the clamping edge 45 than the spring bracket 41. The actuating leg 42 thus extends in the mounted and non-actuated state at a minimum distance from the busbar 3 (see also fig. 1). The actuating leg 42 accordingly extends for the most part substantially parallel to the surface of the first busbar section 30. A relatively large lever arm for actuating the clamping leg 43 is realized in the manner described. This can reduce the operating force of the operating lever 5. The actuating leg 42 can extend along the first busbar section 30 as far as past the bending region 35. The actuating leg 42 can project out of the first busbar section 30, in particular, by means of its driver opening 46, so that the spring driver 54 can engage in the driver opening 46 without being obstructed by the busbar 3.
The clamping spring 4 can be designed in particular elastically. The design also prevents the clamping spring from turning over significantly in the event of a tilting pull.
The actuating leg 42 can additionally be guided in the longitudinal extension of the actuating leg 42 by a guide means in the insulating material housing, for example a housing wall or a housing edge. Such an inner housing edge is formed, for example, by the free end of the intermediate wall 26 in the interior of the insulating material housing 2 (see also fig. 3 and 4). As a result, the bending load at the transition of the actuating leg 42 to the clamping leg 43 can be further minimized. Furthermore, an advantageous guidance of the curved bearing region 49 in the socket bearing 59 can thereby be achieved during the pivoting movement of the actuating lever 5 by: the curved bearing region 46 is guided in the socket bearing 59 in the direction of the pivot axis of the actuating lever 5. In this way, a clamping spring 4 with a shortened bending length can be realized. Such a clamping spring 4 better prevents an undesired bending or buckling of the clamping leg 43 when pulled from the outside at the fixedly clamped electrical conductor. The risk of the clamping legs 43 breaking off when mechanically pulled at the clamped electrical conductor is minimized.
The distance, i.e. the gap size between the actuating leg 42 and the busbar 3, can be less than 1mm or less than 0.5mm, for example. An exemplary advantageous value is 0.3 mm. In this way, the actuating leg 42 also does not contact the busbar, so that wear due to friction is avoided.
According to one advantageous embodiment, the effective length of the actuating leg 42 in terms of actuation, measured from the branching point of the actuating leg 42 from the clamping leg 43 up to the curved bearing region 49, is greater than the length of the clamping leg, measured from the branching point of the actuating leg 42 from the clamping leg 43 up to the apex of the spring bracket 41. In this way, the spring can be realized with a short flexion length and a beneficial operating force.
Fig. 12 shows the interaction between the clamping spring 4 and the actuating lever 5 when the actuating lever 5 is in the open position. The spring driver 54 extends out of the driver opening 46. The advantageous interaction of the curved bearing region 49 with the socket bearing 59 is again apparent.
As fig. 7 to 9 also show, the spring driver 54 has a width that varies over its extension. This can be achieved, for example, by: the spring driver 54 narrows towards its free end, for example by means of an inclined portion on one or both sides. A first region 61 and a second region 62, which is connected to the first region 61, can thus be formed on the spring driver 54. The first region 61 is narrower than the second region 62 in the direction of the width of the spring driver 54. The spring driver 54 can then transition into a third region 63, which is wider than the second region 62. In this way, the spring driver 54 can be easily introduced into the driver opening 46. If the spring driver 54 is introduced into the driver opening 46 by means of its first region 61, a guide for the lateral webs 47 of the actuating legs 42 is formed by the second region 62 and/or the third region 63, which follow as the actuating lever 5 continues to pivot. The guide can be designed in particular as a guide on both sides for the two lateral webs 47. This embodiment of the spring driver 54 is suitable not only for the actuating lever 5 with the described pivotability, but also for other types of actuating elements which are mounted movably, i.e. in the form of sliding elements.
It can also be seen that the actuating leg 42 does not substantially change its position relative to the clamping leg 43 during the actuating movement of the actuating lever 5. This has the advantage that the transition between the actuating leg 42 and the clamping leg 43 is subjected to only slightly varying bending loads during actuation. This is further supported by the relatively small bending radius at the transition from the actuating leg 42 to the clamping leg 43. For example, an average bending radius R3 of the bending region is advantageous, which has a magnitude of at most three times the thickness of the sheet metal. This enables an optimized introduction of force of the actuating lever 5 via the actuating leg 42 into the clamping spring 4. As a result, a direct transmission, a short stroke and thus substantially no tension in the actuating leg 42 is achieved. Furthermore, this configuration allows a very simple production of the components used and of the entire terminal 1.
The clamping spring 4 can therefore be arranged with its majority and in particular with the actuating leg 42 on the same side of the busbar 3, in particular on the side on which the electrical line is introduced into the line feed-through opening 36.
Fig. 13 and 14 show an isolated view of the busbar 3. In this case, the busbar 3 is shown additionally having a third busbar section 37 connected to the second busbar section 31. The busbar 3 has a further line feed opening in the third busbar section 37, at which a further clamping point can be formed.
The first and second busbar sections 30, 31 have the elements already described. The recess 33 for guiding the first guide section 57 and the seating region 34 for seating the seating projection 58 of the actuating lever 5 are visible in particular. The recess 33 can be provided only in the second busbar section 31 or, as shown, also extend into the bending region 35 or even into the first busbar section 30. The recess 33 is surrounded on all sides by the material of the busbar 3. It can be designed as a recess which penetrates the material of the busbar only partially from the side of the seating region 34 or as a completely penetrating recess (without a bottom).
The busbar 3 is formed by the bending region 35 in a bent and/or curved manner, i.e. such that an angle is formed between the first busbar section 30 and the second busbar section 31. By the bent region 35, an internal angle in the range of 105 to 165 degrees or 120 to 150 degrees can be formed between the first busbar section 30 and the second busbar section 31. The bending region 35 can be designed, for example, such that, starting from the second busbar section 31, the busbar 3 is first concavely bent with a first radius R1 and then transitions into a convexly bent section with a radius of curvature R2, in each case in the viewing direction toward the mounting region 34. It is advantageous here for the radius R1 to be greater than the radius R2, for example at least twice as great.
In this way, the actuating lever 5 can be supported at least partially also on the curved region of the busbar 3, i.e. in the bending region 35, and can be moved along it in a pivoting movement.
As an alternative to the one-piece embodiment described above, the busbar 3 can also be designed as a multi-piece embodiment, for example with two or more busbar sections separated from each other. In particular, the third busbar section 37 can be designed as a busbar section separate from the first and second busbar sections 30, 31. This is advantageous for example for applications in split terminals.
Fig. 15 shows a further embodiment of a terminal 1, in this case in the form of a rail-mounted terminal, four terminal 1 being shown, for example, alongside one another. The connecting terminal 1 has the above-described configuration in the region visible to the left, i.e. the arrangement of the busbar 3, the clamping spring 4 and the actuating lever 5 in the insulating material housing 2. The busbar 3 in this case is formed corresponding to the embodiment of fig. 13 and 14, i.e. it has a third busbar section 37. The third busbar section extends into the region of the respective connecting terminal 1 shown on the right, in which at least one second wire connection 8 having a second clamping point 9 is respectively arranged. In the exemplary embodiment shown, each connecting terminal 1 has two second wire connections 8 and correspondingly two second clamping points 9. The corresponding second conductor connection 8 is accessible via a further conductor insertion opening formed in the insulating material housing 2. The electrical line can be introduced into the second line connection 8 in a line introduction direction L2. The wire introduction direction L1 can be different from the wire introduction direction L2.
The connecting terminals 1 have a support rail fastening element 82, by means of which the respective connecting terminal 1 can be fastened to the support rail, for example by being locked thereto. The wire lead-in direction L1 can be arranged, for example, in the range of 30 to 60 degrees relative to the fastening plane of the terminal 1 defined by the carrier rail, and the wire lead-in direction L2 is in the angular range of 75 degrees 105 degrees.
The carrier rail fastening element 82 is arranged on the carrier rail fastening side of the insulating material housing 2. The actuating lever 5 is visible on the housing side of the insulating material housing facing away from the fastening side of the carrier rail, also referred to as housing upper side 83. In this case, the outer surface 65 of the manual actuation section of the actuation lever 5 has the same course in the closed position as the adjacent surface contour of the insulating material housing, i.e. the adjacent part of the housing upper side 83.
The terminal 1 can be actuated in the region of the second wire connection piece 8 by a further actuating element 81, which can be arranged as part of the terminal 1, for example in the form of a press, in an actuating opening 80 of the insulating housing 2, or can be actuated by a separate actuating tool, which is guided to the second wire connection piece 8 if required through the actuating opening 80, but which is not part of the terminal 1.
Fig. 16 to 18 show a further embodiment of a clamping spring 4 and a terminal 1 formed with the clamping spring. In contrast to the exemplary embodiments described above, the clamping spring 4 has an additional curved region in the region of the clamping leg 43, which is referred to as the clamping leg bow 90. In the region of the clamping leg bow 90, the clamping leg 43 is bent towards the inner region of the space enclosed by the clamping spring 4. The overload protection element 29 of the insulating material housing 2 can be adapted to the clamping leg bow 90. By means of the clamping leg bow 90, a reduced bending length of the clamping leg 43 is achieved when the region of the clamping leg 43 between the clamping leg bow 90 and the spring bow 41 rests on the overload protection element 29. Thus, when the actuating lever is moved from the closed position into the open position, the clamping leg bow 90 strikes against the overload protection element 29.
It can also be seen that the clamping spring 4 according to fig. 16 and 17 can have a further configuration of the clamping tongue 44, for example with a width which first decreases towards the clamping edge 45, said width again becoming larger in the end section, so that a relatively wide clamping edge 45 can be provided with a small amount of material. Alternatively, the clamping spring 4 can also have a clamping tongue 44, as shown in fig. 10 and 11.
Fig. 19 shows a view of the terminal 1 similar to fig. 4, but with a different sectional plane, which was already explained at the outset with reference to fig. 1 to 4. In the connecting terminal 1 shown in fig. 19, the actuating lever 5 is again in the open position. The operating lever 5 is seated on the first seating portion 84 and the second seating portion 85. The first seating portion 84 is formed between the first fastening element 52 and the second locking edge 91 of the actuating lever 5, and the second seating portion 85 is formed between the fourth fastening element 64 of the actuating lever 5 and the bending region 35 of the busbar 3.
Fig. 19 shows a connecting line 86, which extends through the first seating point 84 and the second seating point 85. The direction of action of the tensile force exerted by the clamping spring 4 on the actuating lever 5, which is transmitted via the actuating leg 42, is also indicated by the line 87. The direction of the line of action 87 corresponds to the direction of the actuating leg 42 or the lateral web 47 of the actuating leg 42. It can be seen that the angle α is formed by the actuating leg 42 or the line of action 87 with the connecting straight line 86. The angle α is thus defined in a mathematically positive direction along the line of action 87 or in the direction of the steering leg 42 to the connecting line 86. Advantageously, the angle α is less than 90 degrees. This results in a funnel shape, in which the direction of the line of action 87 of the tensile force or of the actuating leg 42 is advantageous compared to the direction of the resting plane formed by the first resting point 84 and the second resting point 85 (indicated by the connecting line 86).
With the movement sequence of the actuating lever 5 illustrated by fig. 19 to 21, an advantageous force reduction mechanism will now be explained, which is effective at least when the actuating lever 5 is moved from the open position into the closed position. The actuating lever 5 is supported in the connecting terminal 1 at the main contact points K1, K2, K3, K4, K5. The force of the clamping spring acting on the actuating lever with the greatest absolute value is transmitted to at least one further element of the connecting terminal via the main contact points K1, K2, K3, K4, K5. The main contact points K1, K2, K3, K4, K5 can undergo a discontinuous (jumping) change of position several times in their pivot range when the lever 5 is pivoted.
It is initially assumed that the actuating lever 5 is completely in the open position and rests on the first resting point 84 and the second resting point 85, as shown in fig. 19. In this state, a first point of the main contact point K1 is formed between the busbar 3 and the region of the actuating lever 5 which is arranged on the busbar 3, for example on the second arrangement point 85. The first point of the main contact point K1 can alternatively also be formed on the first mounting point 84.
If the actuating lever 5 is now loaded with a force in the direction of the closed position by the action of the manual actuating force on the actuating section 50, the pivoting process of the actuating lever 5 is started by: at the first seating location 84, i.e. between the second locking edge 91 and the first fixing element 52, a first instantaneous center M1 of the pivoting movement is formed. The second location of the main contact location K2 can now be formed on the first resting location 84. At the same time, the locking at the second seating point 85 is released, i.e., the actuating lever 5 is easily lifted in this region, so that the fourth fastening element 64 and its adjacent material region are not subjected to load by friction at the busbar 3 and are accordingly not worn. By means of this movement phase of the actuating lever 5, the second securing element 53 can be lifted at the same time above the first locking edge 21, wherein a certain distance exists between the second securing element 53 and the first locking edge 21.
Fig. 21 shows the further course of the movement of the lever 5 when moving into the closed position. If the actuating lever 5 is moved further in the direction of the closed position, the lateral bearing elements 56 of the actuating lever 5 come into contact with the edges of the insulating material housing 2. At this point in time, the instantaneous center of the pivoting movement of the actuating lever 5 becomes point M2, as shown in fig. 21, i.e. the contact point between the lateral bearing element 56 and the insulating material housing 2. In this position, a third point of the main contact point K3 of the operating lever 5 is now also formed for the further movement phase of the operating lever 5.
The contact between the lateral supporting elements 56 and the insulating-material housing 2 is removed again. The actuating lever 5 can now slide along the guide rail of the insulating material housing with the second fastening element 53 or along the underside of the first guide section 57, so that at this point a fourth point of the main contact point of the actuating lever 5 is now formed.
Furthermore, in the course of the further movement, the mounting projection 58 of the actuating lever 5 comes into contact with the mounting region 34 of the busbar 3, so that a fifth point of the main contact point of the actuating lever can be formed between the mounting region 58 of the actuating lever 5 and the mounting region 34 of the busbar.
Fig. 22 now shows the position of the actuating lever 5 shortly before the opening position is reached when moving from the closing position to the opening position. The underside of the first guide section 57 or the second fastening element 53 slides along the guide rails of the insulating material housing 2 or rests on said guide rails shortly before the open position is reached, so that the fourth fastening element 64 and the mounting lug 58 of the actuating lever 5 are raised or at least slightly spaced apart relative to the busbar 3. In the course of the further movement of the actuating lever 5 into the closed position, the second securing element 53 reaches behind the first locking edge 21 of the insulating material housing 2, so that the actuating lever 5 is pulled by the spring force in the direction of the busbar 3 and the fourth securing element 64 rests on the bending region 35 (second resting point 85) in order to reach its final position in the open position according to fig. 19.
Claims (28)
1. A clamping spring (4) of a connecting terminal (1) for connecting an electrical line (92) to a busbar (3), wherein the clamping spring (4) has: an abutment leg (40); a spring bow (41) connected to the abutment leg (40); and a clamping leg (43) which is connected to the spring bracket (41) and which terminates in a clamping tongue (44), wherein an actuating leg (42) projects from the clamping leg (43), wherein the actuating leg (42) has two lateral webs (47) which are spaced apart from one another and a transverse web (48) which connects the lateral webs (47) to one another at their free ends, wherein the lateral webs (47) and the transverse web (48) enclose a driver opening (46) for engaging a spring driver (54) of an actuating lever (5) of the terminal (1),
it is characterized in that the preparation method is characterized in that,
a connecting web projecting out of the plane of the driver opening (46) adjoins the transverse web (48), said connecting web having a curvature, wherein a convex surface of the curvature faces the driver opening (46).
2. The clamping spring (4) as claimed in claim 1, characterized in that the connecting web is integrally formed with the crosspiece (48) and is bent out of the crosspiece (48).
3. The clamping spring (4) according to one of the preceding claims, characterised in that the free end of the actuating leg (42) is bent out by means of the cross-piece (48) in a direction away from the spring bow (41).
4. Clamping spring (4) according to one of the preceding claims, characterized in that an edge formed on the free end of the connecting web (93) faces away from the driver opening (46).
5. The clamping spring (4) according to one of the preceding claims, wherein a width of the driver opening (46) defined by an inner distance between the lateral webs (47) varies over the longitudinal extension of the actuating leg (42).
6. The clamping spring (4) as claimed in claim 5, characterized in that the width of the driver opening (46) changes in a width-reducing manner towards the free end of the actuating leg (42), in particular in a stepped width-reducing manner.
7. A clamping spring (4) of a connecting terminal (1) for connecting an electrical line (92) to a busbar (3), wherein the clamping spring (4) has: an abutment leg (40); a spring bow (41) connected to the abutment leg (40); and a clamping leg (43) which is connected to the spring bracket (41) and which terminates in a clamping tongue (44), wherein an actuating leg (42) projects from the clamping leg (43) in a base region (96), wherein the actuating leg (42) has two lateral webs (47) which are spaced apart from one another and a transverse web (48) which connects the lateral webs (47) to one another at their free ends, wherein the lateral webs (47) and the transverse web (48) enclose a driver opening (46) for engaging a spring driver (54) of an actuating lever (5) of the connecting terminal (1),
it is characterized in that the preparation method is characterized in that,
the clamping leg (43) has a clamping leg bow (90) formed between the spring bow (41) and the root region (96), and the actuating leg (42) has a length from the root region (96) up to a force introduction region, which is formed for exerting an actuating force on the actuating leg (42), said length being greater than a length of the clamping leg (43) from the root region (96) up to an apex of the clamping leg bow (90).
8. A clamping spring (4) having: an abutment leg (40); a spring bow (41) connected to the abutment leg (40); and a clamping leg (43) which is connected to the spring bow (41) and which terminates in a clamping tongue (44), wherein an actuating leg (42) projects from the clamping leg (43) and has two lateral webs (47) which are integrally formed with the clamping spring (4), and wherein the lateral webs (47) are bent out of the clamping leg (43) of the clamping spring (4) with an average bending radius, and wherein the clamping spring (4) is stamped and bent from a flat metal sheet having a predetermined thickness,
it is characterized in that the preparation method is characterized in that,
the metal plate has an average bend radius to thickness ratio of less than 3.
9. The clamping spring (4) according to claim 8, characterised in that the smallest width of the lateral webs (47) is at most 20% of the largest width of the clamping legs (43).
10. The clamping spring (4) according to claim 8 or 9, characterised in that the minimum width of the lateral webs (47) is a maximum of four times the thickness of the sheet metal.
11. A terminal (1) having an insulating material housing (2), a clamping spring (4) and an actuating lever (5) which is pivotably accommodated in the insulating material housing (2) via a pivot region, wherein the clamping spring (4) has an abutment leg (40), a spring bow (41) connected to the abutment leg (40), a clamping leg (43) connected to the spring bow (41) and having a clamping tongue (44), and an actuating leg (42) projecting from the clamping leg (43), wherein the actuating lever (5) interacts with the actuating leg (42) in order to move the clamping tongue (44),
it is characterized in that the preparation method is characterized in that,
the clamping spring (4) is constructed according to one of the preceding claims.
12. A terminal (1) according to claim 11, characterised in that the actuating lever (5) has a spring driver (54) which interacts with the driver opening (46) in order to move the clamping tongue (44).
13. A terminal (1) according to claim 12, wherein the spring driver (54) extends through the driver opening (46) at least in the open position.
14. A terminal (1) according to claim 13, wherein the spring driver (54) extends through a narrower region of the driver opening (46) at least in the open position.
15. A terminal (1) according to one of claims 11 to 14, characterised in that the spring catch (54) does not contact the actuating leg (42) in the closed position.
16. A terminal (1) according to one of claims 11 to 15, wherein the spring catch (54) does not extend into the catch opening (46) in the closed position.
17. Terminal (1) according to one of claims 11 to 16, characterized in that in the region of the curvature of the web a curved bearing region (49) is formed on the actuating leg (42), wherein the actuating lever (5) has a socket-shaped bearing (59) along which the curved bearing region (49) slides during the pivoting movement of the actuating lever (5).
18. A terminal (1) according to one of claims 11 to 17, wherein the abutment leg (40) is arranged on the busbar (3).
19. A terminal (1) according to any one of claims 11 to 18, wherein the busbar (3) has: a first busbar section (30) on which a first clamping point (7) of a first conductor connection (6) of the connecting terminal (1) is formed; and a second busbar section (31), wherein the first busbar section (30) is connected to the second busbar section (31) via a bending region (35) of the busbar (3), in which bending region the busbar (3) is bent.
20. A terminal (1) according to claim 19, characterised in that the actuating leg (42) extends from the clamping leg (43) first along the first busbar section (30) and protrudes beyond the bending region (35) of the busbar (3) at least with a part of the driver opening (46).
21. A connection terminal (1) according to one of claims 11 to 20, characterised in that the actuating leg (42) of the clamping spring (4) slides at least partially over the busbar (3) when the clamping leg (43) is displaced.
22. A connection terminal (1) according to one of claims 11 to 21, characterized in that a guide element (95) is formed on the insulating material housing (2), which guide element forms a housing-side guide of the actuating leg (42) at least in a specific actuating situation and/or pivot position of the actuating lever (5).
23. A terminal (1) according to any one of claims 11 to 22, wherein a payload arm of the lever (5) is shorter in the open position than in the closed position.
24. Connection terminal (1) according to one of claims 11 to 23, characterized in that the cross-piece (48) and/or the curved bearing region (49) slide along the spring catch (54), in particular along the socket-shaped bearing (59), when the actuating lever (5) is moved from the closed position into the open position, and approach the instantaneous center (M1, M2) of the actuating lever (5) there.
25. Terminal block (1) according to one of claims 11 to 23, characterized in that the clamping leg (43) has a clamping leg bow (90) which is formed between the spring bow (41) and a root region (96) and which strikes against a portion of the insulating-material housing (2) when the actuating lever (5) is moved from the closed position into the open position.
26. A terminal (1) having a clamping spring (4) and an actuating lever (5) for connecting an electrical line (92), wherein the clamping spring (4) has at least one clamping leg (43) and an actuating leg (42), wherein the actuating leg (42) projects from the clamping leg (43), wherein the actuating leg (42) has two lateral webs (47) spaced apart from one another and a crosspiece (48) connecting the lateral webs (47) to one another at their free ends, wherein the lateral webs (47) and the crosspiece (48) enclose a driver opening (46) for engaging a spring driver (54) of the actuating lever (5) of the terminal (1),
it is characterized in that the preparation method is characterized in that,
the crosspiece (48) slides along the spring driver (46) when the actuating lever (5) is moved from the closed position into the open position and approaches the instantaneous center (M1, M2) of the actuating lever (5).
27. A terminal (1) according to one of claims 11 to 26, characterized in that an overload protection element (29) is formed on the insulating material housing (2) as an island-shaped material region of the insulating material housing (2), which overload protection element is arranged within a spring bow (41) of the clamping spring (4).
28. A terminal (1) according to claim 27, wherein the clamping spring (4) bears by means of one or more regions against the overload protection element (29) at least when the operating lever (5) is in the open position.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202018101726.8 | 2018-03-28 | ||
| DE202018101726.8U DE202018101726U1 (en) | 2018-03-28 | 2018-03-28 | Conductor connection terminal, clamping spring of a conductor connection terminal and terminal block |
| PCT/EP2019/057856 WO2019185794A1 (en) | 2018-03-28 | 2019-03-28 | Conductor connection terminal, clamping spring of a conductor connection terminal, and series terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111971854A true CN111971854A (en) | 2020-11-20 |
| CN111971854B CN111971854B (en) | 2022-11-29 |
Family
ID=65995717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980022295.3A Active CN111971854B (en) | 2018-03-28 | 2019-03-28 | Connecting terminal, clamping spring of connecting terminal and rail-mounted terminal |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN111971854B (en) |
| DE (2) | DE202018101726U1 (en) |
| WO (1) | WO2019185794A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019132008A1 (en) * | 2019-11-26 | 2021-05-27 | Phoenix Contact Gmbh & Co. Kg | Terminal as well as electronic device |
| DE102019132007A1 (en) * | 2019-11-26 | 2021-05-27 | Phoenix Contact Gmbh & Co. Kg | Terminal as well as electronic device |
| DE202022102833U1 (en) | 2022-05-23 | 2023-08-25 | Electro Terminal Gmbh & Co Kg | Clamp with release lever and pusher |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE202018101726U1 (en) | 2019-07-01 |
| CN111971854B (en) | 2022-11-29 |
| DE102019108003A1 (en) | 2019-10-02 |
| WO2019185794A1 (en) | 2019-10-03 |
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