EP1024511A2 - Electro-mechanical switching device - Google Patents

Abstract

A controllable electromagnet is arranged in an elongate housing. The magnet has a pivotably mounted armature (48) which operates at least one switch contact via a switching device. The armature is pivotable about an axis that is transverse to the longitudinal axis of the housing.

Description

The invention relates to an electromechanical switching device for mounting on a mounting rail with an elongated Housing in which a controllable electromagnet is arranged with a pivotably mounted anchor, at least one via a switching device Switch contact actuated.

Such switching devices come in particular as impulse switches, Installation relays, installation contactors, Timers and staircase lighting timers are used. You can do this as modular devices on a Mounting rail. To control an electrical control voltage pulse on the electromagnet be created. The result is that the Anchor is pivoted. This pivotal movement will via a switching device, for example in the form of a Shift linkage with locking teeth, at least transmit a switching contact, which is optional can be opened and closed.

The switchgear points for mounting on the mounting rail an elongated, essentially cuboid Housing on with after installation of the Carrier rail facing back, one of the carrier rail facing away from the front, and with the back with the long and narrow sides connecting the front. A variety of such can be on the mounting rail electromechanical switching devices with their long sides can be arranged next to each other. At acquaintances Switchgear is a minimal installation width, d. H. a minimum distance of the two long sides, from 18mm provided. In many cases stands for assembly only a limited space is available for the mounting rail, it is desirable to have one in this room to assemble the largest possible number of such switching devices.

The object of the present invention is a generic Switchgear to develop such that it has a smaller installation width.

This is an electromechanical task Switching device of the type mentioned in the introduction solved in that the anchor is transverse to the longitudinal direction of the housing aligned pivot axis pivotable is.

Is used in known switching devices to achieve a smaller installation width the dimensioning of the components reduced in the transverse direction, this has a Impairment of functional safety, in particular, the narrowing of the electromagnet leads including its anchor that the actuation of the switching contacts via the switching device is not guaranteed in all cases.

Surprisingly, it has been shown that these difficulties can be remedied that the Swivel axis of the armature in deviation from the previously usual Longitudinal alignment of the housing, now is aligned transversely to the longitudinal axis of the housing. Such Alignment of the swivel axis also ensures a reliable one for particularly narrow switchgear Actuation of the switch contacts by means of the armature. It can have installation widths of, for example only nine millimeters can be achieved. By means of the Switchgear can thus be doubled so large number of units on a mounting rail assemble as usual.

To achieve a particularly small installation width high functional reliability, it is advantageous if the Do not anchor directly on a yoke of the electromagnet is held. This is the case with a preferred embodiment provided that the armature is pivotable on the housing is stored. You can do this, for example Cones are used which correspond to Immerse recordings.

It is favorable to arrange the pins on the anchor and the to form corresponding recordings in the housing. It is particularly advantageous here if the Pins are integrally connected to the anchor.

Alternatively, an embodiment has proven itself in which the pins are molded onto the housing and the anchor has corresponding recordings.

As mentioned earlier, it is beneficial if the anchor not directly supported on a yoke of the electromagnet is. Instead, the anchor can be provided pivotable by means of a separate bearing part hold. This has proven to be an inexpensive Assembly proved to be advantageous, the bearing part positively to connect to the housing. For example, it can be provided that housing with a guide receptacle train in which the separate bearing part can be inserted when installing the switch. In one The anchor on the bearing part can then carry out a further assembly step be fixed.

To achieve a particularly slim design is provided in a preferred embodiment, that the electromagnet is a solenoid and a Yoke comprises, the solenoid substantially cuboid is formed parallel to the longitudinal direction of the housing aligned long sides and across aligned narrow sides and where the Y-shaped L-shaped along two narrow sides of the solenoid extends. It can be provided that the separate Bearing part at the free end of one leg of the yoke is held. It is favorable if the bearing part is on the free end of the leg is attachable because thereby the bearing part on the narrow side in a simple manner the solenoid can be fixed.

With a particularly simple design it is provided that the bearing part at least one resilient Has holding element that in a corresponding Indentation - preferably the anchor - immersed. This enables a configuration in which the Anchors without additional aids on one end of the electromagnet rests and over the resilient holding element with aligned transversely to the longitudinal direction of the housing Swivel axis using the separate bearing part is held on the yoke.

It is advantageous if the holding element in the anchor Direction towards the yoke, especially towards the end face, elastically preloaded. This gives a particularly reliable pivoting movement of the Anchor.

The electromagnet is preferably arranged laterally Yoke designed as a prefabricated module that inserted into the housing in a functional condition can be.

It is particularly advantageous if the coil connections of the electromagnet through solderless electrical connection, conclusions can be contacted, as this causes contamination be avoided as they are due to use during soldering of the flux can occur.

In a particularly preferred embodiment provided that the housing comprises two housing shells, which can be plugged on in the longitudinal direction of the housing Holding blocks can be fixed to each other. this makes possible a particularly cost-effective assembly because additional mechanical connecting means or adhesives are eliminated can, the fixation of the two housing shells can rather by means of the holding blocks that can be attached laterally respectively. Here it has proven to be beneficial if the holding blocks can be locked with the housing shells are, so that also for fixing the holding blocks no additional mechanical fasteners, Adhesives or the like are required.

For the detachable connection of connecting cables with the Switching devices are provided with connecting terminals. Here it is advantageous if the terminals on the Holding blocks are arranged, as a result of the assembly of the switching device is additionally simplified.

The switching device according to the invention can be single-pole or be designed multi-pole. In particular also at a particularly low degree of multipole training To achieve installation width, it is advantageous if the Holding blocks each several, one above the other Include terminals. For example, it can be provided be that on each narrow side of the switching device two or three staggered and one above the other Terminals are provided.

To the switching device for test purposes too To be able to operate manually, it is advantageous if the switching device on the front of the housing a resilient stored probe element includes. By means of the tactile element the switching device can be operated manually be, the push button on the front of the housing even when the switchgear is installed without more is accessible.

The switching device preferably has a display device to display the current switching status. Here it is favorable if the touch element for displaying the Switching state transparent at least in a partial area is trained. For this purpose, the probe element can be made be made of a transparent material, it can a transparent insert can also be provided, which is from Tactile element is held.

Figur 1:

Einen Längsschnitt einer ersten Ausführungsform eines elektromechanischen Schaltgerätes;

Figur 2:

eine Schnittansicht längs der Linie 2-2 in Figur 1;

Figur 3:

eine Schnittansicht entsprechend Figur 2 einer zweiter Ausführungsform eines elektromechanischen Schaltgerätes;

Figur 4:

eine Schnittansicht entsprechend Figur 2 einer dritten Ausführungsform eines elektromechanischen Schaltgerätes;

Figur 5:

eine schematische Seitenansicht eines Lagerteiles für einen Magnetanker einer vierten Ausführungsform eines elektromechanischen Schaltgerätes;

Figur 6:

eine Ansicht des Lagerteiles längs des Pfeiles A in Figur 5;

Figur 7:

eine schematische Seitenansicht eines Lagerteiles für einen Magnetanker einer fünften Ausführungsform eines elektromechanischen Schaltgerätes und

Figur 8:

eine Ansicht des Lagerteiles längs des Pfeiles B in Figur 7.

The following description of preferred embodiments of the invention serves in conjunction with the drawing for a more detailed explanation. Show it:

Figure 1:

A longitudinal section of a first embodiment of an electromechanical switching device;

Figure 2:

a sectional view taken along line 2-2 in Figure 1;

Figure 3:

a sectional view corresponding to Figure 2 of a second embodiment of an electromechanical switching device;

Figure 4:

a sectional view corresponding to Figure 2 of a third embodiment of an electromechanical switching device;

Figure 5:

is a schematic side view of a bearing part for a magnet armature of a fourth embodiment of an electromechanical switching device;

Figure 6:

a view of the bearing part along the arrow A in Figure 5;

Figure 7:

is a schematic side view of a bearing part for a magnet armature of a fifth embodiment of an electromechanical switching device and

Figure 8:

a view of the bearing part along the arrow B in Figure 7.

In FIG. 1 there is an overall reference number 10 occupied electromechanical switching device in the form of a Impulse switch shown. This is as a built-in device trained and can on one in the Mounting rail, not shown, can be mounted according to the standard DIN-EN 50022.

The impulse switch 10 essentially comprises one cuboid housing 12 with a bottom in Figure 1 shown back 14, which when mounting on the Carrier rail comes to rest, one facing away from the back Front 16 and the back with the front connecting left and right narrow sides 18 and 20 and front ones aligned parallel to the drawing plane and rear long sides 22 and 24. The housing 12 is here in the form of a front and a rear housing shell 26 and 28 designed, each one Form long side 22, 24 and by means of in the area of Narrow sides 18 and 20 in the longitudinal direction of the housing 12 laterally attachable to the housing shells 26 and 28 left and right clamp holding blocks 30 and 32 held together become.

A magnet system 34 is arranged within the housing 12 with a magnetic coil 36, the lower end face 38 of the rear side 14 and its upper end face 40 the front 16 is facing.

The magnet system 34 also includes an L-shaped magnet yoke 42, the first leg 44 along the lower Front side 38 of the magnetic coil 36 runs while whose second leg 46 transverse to the longitudinal direction the housing 12 is aligned and along a Narrow side of the magnetic coil 36 runs.

On the upper end face 40 is a pivotable Magnetic armature 48 positioned, the pivot axis - like is particularly clear from Figure 2 - across Longitudinal direction of the housing 12 is aligned.

With its free end facing away from the pivot axis 50 52, the magnet armature 48 is located on a driver 54 biased elastically towards the front 16 Slider 56, whose facing away from the magnet armature 48 End is fork-shaped and in one Locking teeth 58 of a gear 60 engages. On this is a first arm 64 of a two-armed lever 62 on, on the second arm a resilient contact tongue 68 abuts, the free end of a contact button 70 trains. The latter can be done by swiveling of the control lever 62 optionally in contact with a stationary in the housing 12 arranged counter contact 72 or in Distance to be brought to this.

The first arm 64 of the actuating lever 62 is integral with connected to a boom 74 facing the front side 16, with which a pivoted display lever 76 is coupled.

The slide 56 forms together with the gear 60, the Control lever 62 and the contact tongue 68 a known per se mechanical switching device with whose help through the contact button 70 and the mating contact 72 trained switching contact by a pivoting movement of the armature 48 optionally opened and closed can be. The actuation takes place in such a way that by a first pivoting movement of the magnet armature 48 the gear 60 is rotated such that the adjusting lever 62 with its second arm 66, the contact tongue 68 moved towards the counter contact 72, as in Figure 2 shown in dash-dotted lines. Another Swiveling movement of the magnet armature 48 then results in that the gear 60 is rotated so far that the contact button 70 of the contact tongue 68 due to the pivoting movement of the actuating lever 62 to the counter contact 72 spaced apart position. This is in Figure 1 in Solid line illustrated. The position of the contact tongue 68, and thus the switching state of the impulse switch 10, is indicated by the indicator lever 76, since this depends on the position of the Adjusting lever 62 is aligned differently.

The control of the solenoid 36 for pivoting the Magnet armature 48 takes place laterally from the magnet coil 36 protruding coil connections 78, 80, at their free ends each have a resilient contact 82 or 84 is present. The latter reach through a side Opening 86 and 88 of the left and right side walls 90, 92 of the housing 12. Further side openings 94 and 96 are in the left and right Side wall 92, 94 for reaching through the contact button 70 opposite end region of the contact tongue 68 or for reaching through one of the counter contact 72 Spring contact 98 provided.

To connect not shown in the drawing external control lines to the coil connections 78 and 80 as well as for connecting in the drawing external power lines, not shown, to the contact tongue 68 and spring contact 98 are on the left and right narrow side 18, 20 of the housing 12 each two staggered terminals 100, 102 and 104, 106 are provided. The terminals 100 and 102 are in the left clamp holding block 30 arranged while the terminals 104 and 106 are held in the right clamp holding block 32. The connection terminals each include a clamping screw 108, with the help of a clamp 110 in the direction of the associated resilient contact 82, 84 or in the direction on the contact tongue 68 or the spring contact 98 can be raised so that one in the terminal inserted connecting cable can be jammed. Alternatively can also be provided, the terminals 100, 102, 104 and 106 self-locking by the clamp 110 resilient to the corresponding Contacts.

In addition to the electromagnetic control in the impulse switch 10 a manual operation intended. For this is on the front 16 of the housing 12 a resilient feeler lever 112 arranged on its underside facing the back 12 one Pin 114 carries. By actuating the lever 112 pin 114 will move toward armature 48 moves, so that it pivots mechanically and thereby via the switching device 77, the contact tongue 68 optionally applied to or from the mating contact 72 can be lifted off. The feeler lever 112 is off made of a transparent plastic material, so that by an operator on the front 16 the position of the display lever 76 and thus the switching state of the impulse switch 10 can be recognized.

As already explained, the pivot axis 50 is the armature 48 transverse to the longitudinal direction of the housing 12 aligned. This is particularly clear from Figure 2. The magnet armature 48 is stored at a first embodiment of the impulse switch 10 by means of one piece on the magnet armature 48, in Direction of the front and rear long sides 22, 24 protruding spigot 116 and 118, which in corresponding Immerse recordings 120 or 122. The recordings 120 and 122 are in the front and rear housing shells 26 or 28 molded. Such storage of the magnet armature 48 enables the impulse switch 10 to be made particularly narrow, whereby nevertheless a reliable swiveling movement of the magnet armature 48 when a control voltage pulse is applied the coil connections 78 and 80 is guaranteed. To the others, the impulse switch 10 can be particularly assemble inexpensively. All that is required is the magnet system 34 with the magnet coil 36 and insert the magnetic yoke 42 into the housing shell 26. The magnet armature 48 can then with its rear pin 118 in the receptacle 122 of the rear housing shell 28 be inserted. Then the switching device 77 assemble. The front housing shell 26 can then be placed on the rear housing shell 28, the front pin 116 of the armature 48 in the corresponding receptacle 120 of the front housing shell 26 dips. To attach the two Housing shells 26 and 28 are then only required, the left and right clamp holding blocks 30 or 32 laterally in the area of the narrow sides 18 and 22 to be pushed onto the assembled housing shells 26 and 28. Through the clamp holding blocks 30 and 32 the two housing shells 26, 28 held together. The Fixing the clamp holding blocks 30, 32 on the housing shells 26, 28 takes place by means of a snap-in connection in Shape laterally from the left and right side walls 90 and 92 each of the protruding locking tongues 124 and 126, in the corresponding snap-in shots 128 and 130 of the Engage clamp holding blocks 30 or 32.

FIGS. 3 to 8 show alternative configurations of the impulse switch 10 shown, which is different from the embodiment shown in Figures 1 and 2 differ only in the mounting of the magnet armature 48. The following are therefore for identical Components used the same reference numerals as in the Figures 1 and 2.

In Figure 3 is an embodiment of the impulse switch 10 shown in the front and rear Housing shell 26 and 28 each one in the interior of the Housing 12 bearing pivot 132 or 134 formed is corresponding, while the magnet armature 48 Has bearings 136 and 138. During installation can the magnet armature 48 with its the rear Housing shell 28 facing bearing receptacle 138 on the Put on the protruding journal 134. When assembling of the two housing shells 26 and 28 then engages molded on the front housing shell 28 journals 132 in the corresponding bearing receptacle 136, see above that the magnet armature 48 without additional bearing elements is pivotally mounted on the housing.

In the embodiment shown in Figure 4 is the magnet armature 48 as well as that shown in FIG. 2 first embodiment with side pin 116 and 118 are formed. However, these do not work immediately in corresponding shots in the front and rear housing shell 26 and 28, the storage rather, it is done with the help of a separate one Bearing part 140. This is in corresponding Bearing guides 142 and 144 of the front and rear Housing shell 26 and 28 insertable and in turn forms again receptacles for the pins 116 and 118 of the Magnetic armature 48.

While in the embodiments explained above the storage of the magnet armature 48 on the housing shells 26 and 28 takes place, is described in the following Embodiments provided that the magnet armature 48 via a separate bearing part at the free end of the second leg 46 of the magnetic yoke 42 is held is. In the embodiment shown in Figures 5 and 6 is a separate bearing part 146 provided that the free end with a retaining ring 148 of the second leg 46 surrounds in the circumferential direction, wherein a springy bracket 150 extends from the retaining ring 48, which overlaps the magnet armature 48 and in the direction biased to the free end of the second leg 46. The bracket 150 here engages in one of the Front 16 facing top of the magnet armature 48 molded holding groove 152 and is thereby determined.

In the embodiment shown in Figures 7 and 8 the impulse switch 10 is also provided, the magnet armature 48 by means of a separate bearing part at the free end of the second leg 46 of the Magnet yoke 42 to pivot. In addition comes a bearing part 154 is used, which has the free end of the second leg 46 embraces like a clamp and for this two facing each other, the free end of the second leg 46 receiving jaws 156, 158 having. For swiveling mounting of the magnet armature 48, which corresponds to the embodiment shown in Figure 2 is provided with pins 116 and 118 carries the bearing part 154 at a distance from each other two bearing rings 160, 162 by the pins 116 and 118 of the armature 48 can be reached. This enables the Magnetic armature 48 with the interposition of the bearing part 154 with aligned transversely to the longitudinal direction of the housing To store the pivot axis on the magnetic yoke 42.

Claims (17)

Electromechanical switching device for mounting on a DIN rail with an elongated housing, in which a controllable electromagnet is arranged with a pivoted anchor that over a switching device at least one switching contact actuated, characterized in that the anchor (48) to a transverse to the longitudinal direction of the housing (12) aligned pivot axis (50) can be pivoted is. Switching device according to claim 1, characterized in that the armature (48) on the housing (12) can be pivoted is held. Switching device according to claim 2, characterized in that the anchor by means of pins (116, 118; 132, 134) is kept in corresponding recordings Immerse (120, 122; 136, 138). Switching device according to claim 3, characterized in that the pins (116, 118) are arranged on the anchor and the receptacles in the housing (120, 122) are molded. Switching device according to claim 4, characterized in that the pin (116, 118) in one piece with the Anchors (48) are connected. Switching device according to claim 3, characterized in that the pins (132, 134) on the housing (12) are formed and the armature (48) corresponding Has recordings (136, 138). Switchgear according to one of the preceding claims, characterized in that the anchor by means of a separate bearing part (140; 146; 154) held is. Switching device according to claim 7, characterized in that the bearing part (140) with the Housing (12) is connectable. Switching device according to claim 7, characterized in that the electromagnet is a magnetic coil (36) and a yoke (42), the solenoid (36) is essentially cuboid with parallel to the longitudinal direction of the housing (12) aligned long sides and aligned transversely to it Narrow sides and the yoke (42) being L-shaped along two narrow sides of the magnet coil (36) extends and carries the bearing part (146; 154). Switching device according to claim 7, 8 or 9, characterized in that that the bearing part (146) at least has a resilient holding element (150) which in a corresponding recess (152) is immersed. Switching device according to claim 10, characterized in that the holding element (150) the anchor (48) in Resiliently biased towards the yoke (42). Switching device according to one of the preceding claims, characterized in that the housing (12) comprises two housing shells (26, 28) which by means of Longitudinal direction of the housing (12) attachable holding blocks (30, 32) can be fixed to each other. Switching device according to claim 12, characterized in that the holding blocks (30, 32) with the housing shells (26, 28) can be locked. Switching device according to claim 12 or 13, characterized in that that the switching device (10) terminals (102, 106) includes those on the holding blocks (30, 32) are arranged. Switching device according to claim 14, characterized in that the holding blocks (30, 32) each have several Terminals (100, 102; 104, 106). Switching device according to one of the preceding claims, characterized in that the switching device (10) one on the front (16) of the housing (12) spring-mounted probe element (112) includes for manual Actuation of the switching device (77). Switching device according to claim 16, characterized in that the probe element (112) for displaying the Switching state of the switching device (10) at least in a partial area is transparent.

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