CN103515768B - modules especially for system cabling - Google Patents

Abstract

Particularly for the module of system wiring.The present invention relates to it is a kind of particularly for system wiring have the first housing parts（2）With the second housing parts（3）Module（1）, wherein in the housing parts（2、3）Between by machinery connection electrically connected.The present invention is distinguished by, the first and second housing parts（2、3）Between mechanical attachment force be configured to spring force.

Description

modules especially for system cabling

technical field

The invention relates to a module, in particular for system wiring, having a first and a second housing part, wherein an electrical connection is obtained between the housing parts by a mechanical connection.

Background technique

In the field of low-voltage switchgear technology or automation technology, there are different systems and different types of system wiring. The purpose of this system wiring is to reduce conventional wiring costs and to simplify the replacement of defective components. In this case, the user also benefits from less time spent on the construction and commissioning of the system or plant, from reduced wiring costs, from avoiding wiring errors, and from shorter downtimes when replacing defective components. Time is saved.

The system cabling can be installed not only in the switch cabinet but also in the field. Systems used in the field must meet the requirements for the corresponding protection class. The system cabling often consists of a first and a second housing part, which is usually made of plastic and can consist of several parts. The components can be mounted on top-hat rails or fixed in some other way, wherein the second housing part is fitted to the first housing part, which can be configured as a mounting plate. The mounting plate or the first housing part contains the system wiring and can also have contact points or connections for technical functions of the module, such as sensor inputs or switching outputs.

By attaching the second housing part to the mounting plate or the first housing part, a corresponding contact between the system wiring and the module is achieved. The so-called piercing or piercing technique is frequently used for contacting, in which case the contacting to the system wiring is achieved by means of sharp needles which penetrate into the conductors of the system wiring. However, other types of contact are also possible, for example insulation displacement connection technology, conventional plug connectors or the like.

In systems in the field, the connections must comply with a corresponding degree of protection, so that no short circuit can occur due to the surrounding environment. In this case, the mounting plate or the mechanical connection between the first housing part and the second housing part contributes to making it possible to comply with the stated protection class. The mounting plate or the mechanical connection between the first housing part and the second housing part is mostly realized by screwing or mechanical locking.

The disadvantage here is that the "flow" of the material or aging processes reduces the strength of the connection, which can loosen the connection between the two housing parts and thus no longer ensure the degree of protection in the actual system. In screw connections, therefore, the screw must be retightened after a certain period of time, so that contact reliability and the degree of protection can thus be ensured. However, this is time-consuming and cost-intensive, since the system is often already in production operation at the customer of the machine or system manufacturer at this point in time. Thus, the manufacturer has to do it through the service application or leave this task to the customer. In order to be able to retighten the connection without risk, the plant or machine must be disconnected. It is often not possible to shut down the plant without problems, and this is associated with high costs and considerable time-consuming.

A further disadvantage of using screw connections is that tools are required for making and loosening the connection and that it takes considerable time. Furthermore, in order to comply with the contact reliability and the degree of protection, specified tightening torques must be observed, so a torque wrench is required during assembly.

Up to now, components or modules with a higher degree of protection, such as ASI drives, have been fastened to mounting plates by means of screws. In this case, the mounting board is often contacted by means of pins to the conductors inserted into the mounting board. Furthermore, a tightness of the contact points up to degree of protection IP69x is achieved by screwing the mounting plate as well as the assembly.

A module for connecting actuators and/or sensors is known from EP 0 821 434 B1, which has a lower part with a groove and an upper part of the housing with a circuit board and contact means, wherein the The recess serves to receive a shape-coded flat cable, the contact device has contact pins for contacting the flat cable, the lower part being designed as a mounting plate. In this case, the housing upper part is composed of at least two housing parts to form a detachable unit, the circuit board is held detachably in its inner space and the mounting plate and the housing upper part have mutually matched pivoting mechanisms, By means of this pivot mechanism, the upper part of the housing can be pivoted onto the mounting plate, while at the same time the contact pins are brought into penetrating contact with the flat cable.

DE 10 2005 031 708 B4 describes a housing for connection to an electrical line, in particular a bus, with at least one first housing part and a second housing part, with at least one A locking mechanism in which the body part and the second housing part are locked in a common locking position, wherein a contact device for an electrical contact wire is assigned to the first housing part, and wherein at least one is configured in the second housing part for A wire holder for guiding wires. In this case, the conductor holder is formed at least partially in the conductor holder carrier, and the contact device and the conductor holder carrier are rotatable, so that the conductor course can be adjusted relative to the housing.

The electronics housings known from the prior art have the disadvantage that tools such as screwdrivers or torque wrenches are often required for assembly and that a certain amount of time must be taken into account for fastening. A further disadvantage is that the fastening screws must be retightened after several weeks due to the "flow" and aging of the material in order to continue to ensure the corresponding tightness. This is first of all problematic in the delivered device. It is thus difficult to achieve a high degree of protection with connection technology which is based on a latch without a permanently acting spring force between the two components.

Contents of the invention

Accordingly, the object of the present invention is to realize a module, in particular for system cabling, which permits simple assembly and thereby continuously ensures a high degree of protection in terms of tightness.

This object is solved by a module having the features of patent claim 1 . Advantageous embodiments and developments which can be used individually or in combination with one another are the subject matter of the subclaims.

According to the invention, the object is solved by a module, in particular for system wiring, having a first and a second housing part, wherein the electrical connection between the housing parts is achieved by a mechanical connection. The invention is distinguished here in that the mechanical connection force between the first and the second housing part is designed as a spring force.

The solution according to the invention consists in permanently maintaining the mechanical connection force between two components, namely the first and the second housing part, which are electrically connected to each other by means of spring force. An automatic compensation of the effects of the flow and of aging effects is achieved by means of the spring force, so that retightening or readjusting of mechanical connections is no longer necessary. The spring force can be generated by different types of spring elements, such as helical springs, disk springs, spring clips or the like. It is also possible to vary the number of spring elements depending on the connection. In principle, the spring force can be generated by the tension or compression principle. This applies not only to axial applications, but also to radial applications. Here, the principle of operation of the invention remains unchanged.

Another advantage of the solution according to the invention is that no tools are required to form the mechanical connection. For example, the spring force can be generated by snapping a spring. It is likewise conceivable to insert a wedge or to perform a rotary movement by means of a knob. It can also be dismantled without tools. However, this is not mandatory, the advantage of requiring removal of the tool being a certain operational safety.

The mechanical components required to generate the spring force are advantageously accommodated or integrally arranged in such a way as to prevent loss on one of the two housing parts. This has the advantage over separate components that firstly the assembly is simplified and secondly no parts are lost.

The module according to the invention preferably has two housing parts which are fixed to one another by means of one or more clamping springs arranged on one or more sides for the mechanical connection. The housing parts are preferably of square design, wherein one of the two housing parts can be designed as a mounting plate. The two housing parts combine to form a cube, which is held together by spring force, preferably arranged laterally, in the form of clamping springs or other spring elements. In order to fasten the clamping spring or spring element on the housing part, there is a recess in the housing part into which the clamping spring or spring element engages. Preferably, a plurality of clamping springs and/or a plurality of spring elements can be arranged laterally or centrally in the module.

The module according to the invention consisting of two housing parts is distinguished in that the mechanical connection force between the housing parts is designed as a spring force. This has the advantage that no further steps are required after the first assembly to maintain the leak-tightness or contact reliability. Due to the spring properties of the connection, it is no longer necessary to retighten the connection mechanism. It is also advantageous that no other tools are required for assembly. Furthermore, the advantage is obtained that the elements required to generate the spring force are preferably integrated in one of the two housing parts, thus simplifying assembly. Loss of said parts is thus also ruled out.

Description of drawings

Further advantages and embodiments of the invention are explained below on the basis of exemplary embodiments and with reference to the drawings.

It is shown schematically here:

1 is a sectional view of a module according to the invention, which has a first and a second housing part together with a clamping spring arranged on one side for mechanically connecting the two housing parts;

Fig. 2 is a perspective view of the clamping spring according to Fig. 1;

3 is a cross-sectional view of a module with clamping spring fixing structures on both sides according to the present invention;

4 is a sectional view of another embodiment of a module according to the invention in an unlocked state with two housing parts which are mechanically fixed to each other by locking pins together with compression springs;

Fig. 5 is a cross-sectional view of the module according to Fig. 4 in a locked state;

Figure 6 is a perspective view of the locking pin and the pressure spring according to Figures 4 and 5;

7 is a sectional view of another exemplary embodiment for a module according to the invention with two housing parts, which are mechanically fixed to each other by means of a snap-fit connection together with springs;

FIG. 8 is a sectional view of another embodiment of a module according to the invention with two housing parts which are mechanically interlocked with each other via slides together with springs;

Figure 9 is a perspective view of the slide block of Figure 8 together with the spring;

10 is a sectional view for another embodiment of a module according to the invention with two housing parts which are mechanically interlocked with each other by means of a rotary hinge together with a spring;

Fig. 11 is a perspective view of the swivel hinge according to Fig. 10 together with the spring;

12 is a cross-sectional view of another embodiment of a module according to the invention with two housing parts which are mechanically fixed to each other by means of a pivot drive together with a spring;

Fig. 13 is a perspective view of the pivot drive according to Fig. 12 together with the spring;

14 is a sectional view for another embodiment of a module according to the invention with two housing parts, said housing parts being mechanically fixed to each other by means of a pivot drive together with a spring and a locking mechanism;

FIG. 15 is a perspective view of the pivot drive according to FIG. 14 with the spring and the locking nose.

detailed description

FIG. 1 shows a module 1 according to the invention with a first housing part 2 and a second housing part 3 with a clamping spring 4 preferably arranged on one side for mechanical connection. fixed to each other. The housing parts 2 , 3 are preferably of square design, wherein one of the two housing parts 2 , 3 can be designed as a mounting plate. The two housing parts 2 , 3 combine to form a cube, which is held together by clamping springs 4 , which are preferably arranged laterally. For fastening the clamping spring 4 on the housing parts 2 , 3 there are recesses 5 , 6 in which the clamping spring 4 engages. Preferably, the clamping spring 4 can also be arranged centrally on the housing parts 2 , 3 .

FIG. 2 shows the clamping spring 4 according to FIG. 1 . The clamping spring 4 has a preferably planar surface 7 which, in the fixed state, bears against the sides of the cuboidally assembled housing parts 2 , 3 . At its ends, the planar surface 7 merges into preferably S-shaped end pieces 8 , 9 , which are preferably at 90° to the planar surface 7 . Here, it is proposed according to the invention that the lower part parts 10 , 11 of the S-shaped end parts 8 , 9 directly connected to the flat surface 7 surround the housing parts 2 , 3 , while the upper parts 10 , 9 of the S-shaped end parts 8 , 9 The partial parts 12, 13 fit into the recesses 5, 6 on the housing parts 2, 3.

FIG. 3 shows a module 1 according to the invention with clamping spring fastenings on both sides. For this purpose, two further opposite grooves 14, 15 are arranged on the housing parts 2, 3 in the assembled state of the housing parts 2, 3, the S-shaped end pieces 8, 15 of the clamping spring 4 The upper part parts 12, 13 of 9 engage in said grooves.

FIG. 4 shows a further embodiment for a module 1 in an unlocked state according to the invention with two housing parts 2 , 3 which are mechanically connected to each other via a locking pin 16 together with a compression spring 17. fixed. In order to accommodate the locking pin 16 together with the pressure spring 17 , recesses 18 , 19 are provided in the housing parts 2 , 3 , wherein a protrusion 20 is arranged in the recess 18 and two opposite protrusions 21 are arranged in the recess 19 ,twenty two. The locking pin 16 has a preferably cylindrical central part 23 , on which the compression spring 17 is guided. Furthermore, the cylindrical central part 23 of the locking pin 16 has an actuating head 24 at one end and a locking nose 25 at the other end. The locking pin 16 is supported with a compression spring 17 in a recess 19 of the housing part 3 , wherein the compression spring 17 bears against the projections 21 , 22 . Only the cylindrical central part 23 protrudes with the locking nose 25 of the locking pin 16 into the recess 18 of the housing part 2 . In the unactuated state, the locking lug 25 of the locking pin 16 lies opposite the protrusion 20 of the housing part 2 .

FIG. 5 shows the module 1 according to the invention according to FIG. 4 in a locked state. In order to switch the locking pin 16 into the locked state, the actuating head 24 of the locking pin 16 must be pressed into the recesses 18 , 19 so that the compression spring 17 is blocked between the actuating head 24 and the projections 21 , 22 . The locking pin 16 must then be rotated so that the locking lug 25 is arranged under the protrusion 20 .

The locking pin 16 and the compression spring 17 are shown in FIG. 6 . The locking pin 16 has a preferably cylindrical central part 23 , on which the compression spring 17 is guided. An actuating head 24 and a locking nose 25 are arranged at the end of the cylindrical central part 23 of the locking pin 16 .

FIG. 7 shows a further exemplary embodiment for a module 1 according to the invention with two housing parts 2 , 3 which are fastened to one another by a snap connection together with a spring element 26 . In this exemplary embodiment, the snap-in connection is designed as a plug-in element 27 with an actuating head 28 on which a preferably cylindrical body 29 is arranged. On this cylindrical main body 29 a spring element 26 is inserted, wherein one end of the spring element 26 is fastened to the plug element 27 and the free spring end 30 of the spring element 26 is arranged in a recess 31 of the housing part 2 In this spring head the helix has a larger diameter than the helix on the cylindrical body 29 . The plug-in element 27 including the spring element 26 can be removed from the housing part 2 , 3 by turning the actuating head 28 .

FIG. 8 shows a further exemplary embodiment for a module 1 according to the invention having two housing parts 2 , 3 which are mechanically fastened to one another by means of slides 32 together with spring elements 33 . The spring element 33 is preferably arranged in the housing part 2 , protrudes into the housing part 3 and is fastened there to a fastening body 34 which is arranged inside the housing part 3 . A slide 32 is likewise fastened to the fastening body 34 , via which slide the locking device formed by the fastening body 34 and the spring element 33 is accessible from the outside.

FIG. 9 shows the locking device from FIG. 8 with spring element 33 , fastening body 34 and slide 32 .

FIG. 10 shows a further exemplary embodiment for a module 1 according to the invention with two housing parts 2 , 3 which are fastened to one another by means of a swivel joint 37 a together with a spring element 35 . Similar to the embodiment in FIG. 8 , the spring element 35 is preferably arranged in the housing part 2 and protrudes into the housing part 3 and is fastened there to a fastening body 36 which can be formed by means of a preferably three-part The swivel hinge is placed in a tensioned or relaxed state.

FIG. 11 shows the locking device from FIG. 10 with spring element 35 , fastening body 36 and three-part rotary hinge 37 a , 37 b , 37 c .

FIG. 12 shows a further exemplary embodiment of a module 1 according to the invention with two housing parts 2 , 3 which are fixed to each other by means of a pivot drive 38 together with a spring element 39 . The spring element 39 is fixed on the pivot drive 38 . The combination of these two parts is converted into a tensioned state by a pivoting movement initiated outside the housing parts 2 , 3 , wherein the pivot drive 38 is arranged in a recess 40 of the housing part 3 in the tensioned state.

FIG. 13 shows the pivot drive 38 from FIG. 12 together with the spring element 39 .

FIG. 14 shows a further embodiment of a module 1 according to the invention with two housing parts 2 , 3 which are mechanically connected to each other via a pivot drive 41 together with a spring element 42 and finally a locking mechanism. fixed. In this case, the spring element 42 is fastened to the pivot drive 41 . The combination of the two parts is transferred into the tensioned state by a pivoting process initiated outside the housing part 2 , 3 , wherein the pivoting drive 41 has a locking projection that snaps into a recess 44 of the housing part 3 . nose43.

FIG. 15 shows the pivot drive 41 from FIG. 13 together with the spring element 42 .

A module according to the invention consisting of two housing parts is distinguished in that the mechanical coupling force between the housing parts is designed as a spring force. This has the advantage that no further steps are required after the first assembly to maintain the leak-tightness or contact reliability. Retightening is no longer necessary via the spring properties of the connection. It is also advantageous that no further tools are required for assembly. Furthermore, the advantage is obtained that the elements required for generating the spring force are preferably integrated in one of the two housing parts, thus simplifying assembly. This also precludes the loss of said parts.

Claims (6)

1. Module (1) with a first housing part (2) and a second housing part (3) for system wiring, wherein the first housing part (2) and the second housing part (3) Electrical connections are obtained through mechanical connections, It is characterized in that, The mechanical connection force between the first housing part (2) and the second housing part (3) is formed as a spring force, wherein the spring force is formed by a spring element (17, 26, 33, 35, 39, 42) where the first housing part (2) and the second housing part (3) are mechanically fixed to each other by the locking pin (16) together with the compression spring (17) and in order to accommodate the locking pin (16) Together with the pressure spring ( 17 ), recesses ( 18 , 19 ) are provided in the first housing part ( 2 ) and in the second housing part ( 3 ). 2. Module (1) according to claim 1, characterized in that the spring force is formed by a tension or compression principle. 3. The module (1) according to claim 1, characterized in that the spring element (17, 26, 33, 35, 39, 42) is integrally arranged in a loss-proof manner on the first housing part ( 2) and at least one of the second housing part (3). 4 . Module ( 1 ) according to claim 1 , characterized in that the spring elements ( 17 , 26 , 33 , 35 , 39 , 42 ) are arranged on the sides of the module ( 1 ). . 5 . Module ( 1 ) according to claim 1 , characterized in that the spring element ( 17 , 26 , 33 , 35 , 39 , 42 ) is arranged centrally in the module ( 1 ). 6 . The module ( 1 ) according to claim 1 , characterized in that a plurality of the spring elements ( 17 , 26 , 33 , 35 , 39 , 42 ) are arranged on the side of the module ( 1 ). Arranged laterally and/or centrally in the module ( 1 ).