DE8219272U1 - Electromagnetic relay with mechanical indicator for armature position - Google Patents

Description

W. Grüner G.m.b.H. & Go. Electrical engineering Limited partnership 7209 Wehingen

Representative:

Kohler Schwindling Späth Patent attorneys Hohentwielstrasse 7000 Stuttgart

Electromagnetic relay with mechanical indicator for armature position

The invention "relates to an electromagnetic relay with mechanical indicator for armature position. Known relays of this type have a plate pivoted in a helical manner, the plate facing away from the pivot axis

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this parallel face serves as a display surface. The display device is coupled to a relay armature. There Due to a generally only very small armature stroke, the various display positions change despite the one used Lever mechanisms differ only slightly from each other, additional measures must be taken to a enable clear display. For example, a screen, a window or the like. be provided so that from Only one of the display positions in close proximity is visible.

The invention is based on the object of creating an electromagnetic relay with its mechanical display device respective anchor positions are displayed clearly distinguishable. This task is performed according to the Invention achieved in that the display device has a pivotably mounted pointer, the display plane of which has substantially a right angle to its pivot axis and which is coupled to the relay armature. Of the The advantage of the invention is that the pivoting range of the pointer is due to the external dimensions of individual components of the relay is far less restricted than with

χ known relay is the Pail. This enables indicate different positions of the relay armature by clearly distinguishable positions of the pointer, Additional distinguishing aids required in known relays can be used in a relay according to the invention therefore not applicable.

According to one embodiment of the invention, the pointer of the display device is attached to a shaft ", the axis of which with the pivot axis of the pointer coincides. For further training the invention engages a drive element whose Movement is derived from the lifting movement of the armature, on the shaft outside of its axis. For example is the drive element is connected to the shaft and the armature so that tensile and thrust forces can be transmitted. this has the advantage that no separate return spring is required for the pointer.

In one embodiment of the invention, the shaft is at least in their end area facing away from the pointer designed to be torsionally elastic and mounted in a rotationally fixed manner at this end. For example, the shaft has a non-circular cross-section near its end facing away from the pointer and works with it a suitably trained warehouse.

In further embodiments, the pointer is when pivoting from one display position to another display position moves against the force of a return spring. The return spring can, for example, as a leaf spring or as Be formed coil spring. In a preferred embodiment, the return spring is at one end area attached to the shaft, for example injection molded in one piece, and with its other end region on one of the parts of the Relay supported. In a further development according to the invention this other end region of the return spring is supported on the relay armature or on a part attached to it. These Embodiments have the advantage that the display device can be trained particularly easily.

Both "in the embodiments with the partial torso onelastically trained wave as well as in those with the return spring it is possible to form the coupling between pointer and relay armature loosely, "for example by a tab connected to the relay armature, which is pressed against a part of the display device and the Pointer moves against the respective restoring force and which only has to exert pressure forces. Assembling the relay is thereby facilitated in an advantageous manner.

In one embodiment, a pivot bearing for the shaft is provided on a plug base of the relay. Does it this is the only bearing for the shaft, the bearing and the shaft are designed so that the shaft despite the Coupling with the relay armature at most insignificant deflections in directions radial to the pivot axis of the shaft learns. For example, the shaft is inherently rigid and in the region of its end facing away from the pointer in the pivot bearing guided sufficiently well radially; Axial securing can be achieved by additional means, such as by A split pin or the like. Be provided. Overall, this results in simple handling during assembly. With further Embodiments of the relay according to the invention, however, is an additional pivot bearing for the relay armature Shaft provided. In a further development, this pivot bearing is arranged near the pivot axis of the armature. Through this it is achieved that the pivot bearing only moves its position relative to the stationary parts of the relay when the armature moves changes slightly.

Are on both the relay armature and the connector base Pivot bearing provided for the shaft is "for example the shaft can be inserted into the pivot bearing on the connector base and laterally inserted into the pivot bearing on the relay armature, Thus, in a further development of the concept of the invention, the shaft has at least one area between these bearings Flexural elasticity that is sufficient to bring the shaft under elastic bending in these bearings. Through this are the advantages of a good bearing of the shaft with those of a simple assembly in the manufacture of the relay linked in an amazingly simple way.

In further embodiments of the relay according to the invention there is a device for mechanically actuating the relay by a formed in a wall of a protective cap of the relay, separated on three sides from this wall Flaps formed, wherein the connection area of the flap and wall is at least partially elastic and the Tabs at a distance from this connection area have a button-shaped elevation on the operator side and on the operator side opposite side has a nose that is spaced from the armature pivot axis with a relay armature (ι attached lever arm cooperates. This device meets the requirements of the market, which also applies to outwardly closed on all sides trained relay a manual operating device desires. Is the mechanical one Actuating device arranged on the wall of the protective cap opposite the plug base, so has this has the advantage that close next to or on top of each other, for example Relays arranged in switch cabinets from the side facing away from the plug base without hindrance through adjacent relays, despite the high component density, they are nevertheless accessible to mechanical actuation are.

According to one embodiment, a protective cap of the Relay on a wall an inwardly protruding projection, which is close to the pivot axis of the pointer on a Side of this pointer is arranged on which a pivot bearing of the pointer is designed to be open. This allows the Display device "when assembling the relay" is particularly easy to bring into its pivot bearing and yet it is after Once the protective cap has been put on, it is secured against jumping out of the pivot bearing to the side.

In a further development of the inventive concept is in the Embodiments listed above, the cooperating with the relay armature nose of the mechanical actuator so "arranged at the pointer as described above. The mentioned advantages of the respective embodiments are thereby connected to one another in a particularly advantageous manner.

Further features and advantages of the invention emerge from the following description of an exemplary embodiment of the invention with reference to the drawing, which shows essential details of the invention, and from the claims. The single ones Features can be individually or collectively in any combination in an embodiment of the Invention be realized. Show it:

Pig. 1 is a side view of an embodiment of a relay according to the invention with a mechanical display device for the anchor position, without protective cap,

• * I ·

Pig. 2 is a plan view of the relay;

Pig. 3 is a front view of the relay in the direction of arrow III in Pig. 1,

Pig. 4 is a perspective view of a display element of the relay;

Pig. 5 one partially broken off on an enlarged scale r- shown partial section of the display element with

a tab associated with this along the line V-V in Pig. 1 ,

Pig. 6 a side view of the relay with attached,

Protective cap shown partially broken off with mechanical actuation device and

Pig. 7 is a front view of the relay in the direction of arrow VII in Pig. 6th

In Pig. 1 to 3 is an eleven-pin socket 3 from insulating material, for example plastic, have (. The electromagnetic relay 5 shown, the coil body 7 and coil core 9 on the horizontal leg 11 of an L-shaped yoke made of magnetizable material 12 are attached, which in turn in a manner not shown with its horizontal leg approximately at right angles is attached to the connector base 3. At the upper end of the vertical leg 13 of the yoke 12 is a relay armature pivoted; on it are three leaf spring-like contact springs 17 for changeover contacts arranged on the plug base 3 20 isolated in the manner described below

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Attached spaced apart and provided with leads 21 shown broken off. On one of the plug socket 3 pioneering port set 23 of the armature 15, which extends beyond the pivot axis and which is fixed to this port set 23 connected, if necessary formed in one piece, engages a return spring formed as a helical spring 25, which is hooked with its other end on a formed in the kink area of the yoke 12 nose 27 and the yoke 12 at in the de-energized state of the coil at a distance from the upper end of the coil core 9. The distance is given by aas Cooperation of the contact springs 17 with the in Pig. 1 arranged above the contact springs 17, with these parts of the changeover contacts 20 together forming the circuit breaker. Are instead of the changeover contacts 20 only on switches provided, then the mentioned distance is provided by a lying on the same side as the port set 23, with the anchor 15 firmly connected, possibly formed in one piece with it, extending downward from the armature 15 approximately at a right angle Stop lever 29 limited.

If instead of the changeover contacts 20 provided in the exemplary embodiment and forming three changeover switches, only two changeover switches or only three on switches or only three off switches are provided, then instead of an eleven-pole plug socket, an eight-pole plug socket can be provided, the contacts of which have a greater spacing from one another with the same pitch circle diameter, whereby standards, for example for devices of group C, 380 V (YDE 011O) _{3 can} be complied with.

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The upper side of the armature 15 is covered by a thin one covered approximately from the pivot axis his approximately to the base-side end of the armature 15 extending plate 30, which with the Armature 15 is firmly connected. On the top of this plate 30, a cuboid plate 31 is arranged and with this is firmly connected, possibly formed in one piece, with which the contact springs 17 are fixed at the respective end on the feed line are connected. The plate 31 v; ice is at its plug socket

/ \ kel 3 facing away from the end two at right angles to it protruding above, running approximately parallel to the leg 13, spaced apart tabs 33 and 34, of which the first tab 33, as in Pig. 2 and 3 can be seen, approximately in the middle, the second tab 34 at a distance from the first tab 33 approximately in the middle of the left half of said area is arranged. The two tabs 33 and 34 are integral with the plate 31 formed and made of plastic, such as polyamide. The tabs 33, 34 are plate-shaped, wherein the tab 34 is arranged on its right side and running essentially parallel to the plate 31 Has recess 35, the lower boundary surface

ν runs slightly above the upper edge of the plate 31. This boundary surface serves together with one in each case formed by the recess 35 in the tab 34, in Pig. the recess 35 on its upper and on its left edge surface limiting, essentially horizontally and vertically extending arm 36 or 37 as a bearing for a subsequent described display element 40, so that in the front view according to Pig. 3 for the tab 34 an approximate picture in the manner of an upside-down "J".

That in Pig. The display element shown in FIG. 4 has an approximately horizontally extending axis 41 and an axis 41 on the right Angle downward pointing pointers 42, which are fixedly connected to one another, optionally formed in one piece. Approximately at the end of the first third of the shaft 41 facing away from the pointer 42 has an integral part of this shaft 41 and flat arm 43 arranged at right angles to it, roughly horizontal, in Pig. 4 running sideways to the right, away from him. This arm 43 is designed similar to a leaf spring and slightly afterwards along its length bent down. The horizontally extending, otherwise circular cross-section having shaft 41 points to the Arm 43 opposite side an approximately plate-shaped tab 45, the thickness of which is approximately the diameter of the corresponds to the aforementioned cross-section. On its underside, the shaft 41 points in the area of the pointer 42 facing away End of the tab 45 is an approximately cuboid, approximately parallel to the arm 43, to this side and downwards open recess 47 so that in this area on the underside of the tab 45 a parallel to the longitudinal direction of the Shaft 41 extending, approximately vertically downward web 48 is formed. This web 48 works with a Tab 50 together, which is at the top of the plate 30 in the The area of its end facing the connector base 3 runs transversely to the contact springs 17 and is also provided with an in this area integrally formed lower web 51 lies in a line; the tab 50 and the web 51 are with the Plate 30 formed in one piece. The height of the web 51 is designed so that the contact springs 17 in the illustrated Rest position of the relay 5 are supported on it.

The display element 40 is with the free end of its shaft 41 in a socket formed on the plug base 3 52 recessed, circular bore 55, with the other end of this shaft 41 in the recess 35 of the bracket 34 around an axis 56 pivotally mounted, the arm 43 at the upper side surface of the plate 31 is resiliently supported. In addition to the bore 55, the arm 36 also removes it from the arm and upward forces transmitted from the tab 50 to the shaft 41. The hole 55, whose axis with the pivot axis 56 coincides, has a depth of approximately 5 mm and a diameter of about 1.5 mm and is almost completely from the part of the shaft 41 mounted here filled, so that there is only a very small radial play for the shaft 41. The tab 45 of the shaft 41 extends extends from a point near the connecting piece 52 to near the tab 34 · The latter results in an axial one Securing the shaft 41, but the distance between the tabs 34 and 45 is dimensioned so that an unimpeded Anchor movement is still guaranteed. When attaching the display element 40, its shaft 41 at least sufficient flexural elasticity in a region lying between the tab 34 and the connecting piece 52 in the assembled state has, to the relay 5, the free end of the shaft 41 is inserted into the bore 55 and in radial Direction pivoted so far that the shaft 41 can be inserted with its other end into the recess 35, in which it is prevented from sliding out laterally due to its axial guidance through the bore 55. The distance between the tabs 33, 34 is dimensioned so that the above-described attachment of the display element

40 is enabled; in the present exemplary embodiment, this distance is approximately 2 mm.

If necessary, the tab 34 is made of sufficiently elastic material and engages around the shaft 41 like a claw, wherein the recess 35 on the tab 33 facing Side has a height which is less than the diameter of the shaft 41 supported in the recess 35 · to in 3 shows the shaft 41 being pushed into the recess 35 from the right, it is thus in its bearing "locked". This results in a further possibility for laterally securing the shaft 41 in the bearing mentioned.

In the rest position of the relay 5, the display element 40 is with its shaft 41 in the region of the recess 47 on the Tab 50 supported so that this tab 50 is pressed against the web 48 and the display element 40 up to the through a lateral edge 57 of the recess 47 formed stop is pivoted. In the working position of the relay 5 the tab 50 is in a lower position, shown in phantom in FIG. 5, the display element 40 due to the spring action of its arm 43 still with the web 48, but now with its lower, edge 58 pointing away from arm 43, supported on tab 50 and thus counterclockwise into another Position than before is pivoted about the pivot axis 56, which is evident on the front of the relay 5 by a significant change in position of the pointer 42 is visible. If the armature 15 returns to its rest position, the tab moves 50 upwards and thereby pivots the display element 40 back into its original position.

13th

One in Pig. 6 and 7 running vertically, the connector base 3 facing away from wall 61 of a partially broken-off protective cap 62 for the relay 5 has a in the actuating element 64 arranged in the middle of the upper half of the wall 61. This actuating element 64 has a substantially parallel to the wall 61 extending flap 66, which in the region of its upper end one of the Connector base 3, key-shaped elevation 68 pointing the way

{ ) has. In the lower end region, the tab 66 is firmly connected to the protective cap 62, namely injection molded in one piece. Above the lower end region of the tab 66, the wall 61 has an opening which is just sufficient to allow the tab 66 to pass when the projection 68 is pressed in the direction of the plug base 3. In the upper end region of the tab 66, on the side opposite the elevation 68, an approximately frustoconical pin 70 is formed, which points away from the tab 66 at a right angle and runs approximately parallel to the longitudinal direction of the contact springs 17. This pin 70 is directed towards the tab 33, so that when you press the elevation 68 the actuation

/ ting force is transmitted to the tab 33, whereby the

Relay 5 can be operated mechanically from the outside. If the actuation force ceases, the actuation element ί 64 springs into its own due to the inherent elasticity of the tab 66

Rest position back, while the armature 15 is pivoted back in a known manner by the return spring 25 into its rest position will. The pin 70 runs approximately parallel to the pivot axis 56 of the pointer 42 and is close to this pivot axis 56 arranged so that the shaft 41 when attached Protective cap 62 against jumping out of the side

Recess .55 is secured. The protective cap 62 as well as the
Actuating element 64 are made of transparent material,
For example, polycarbonate, is manufactured.

When the protective cap 62 is fitted, the relay 5 has dimensions in the form of a cuboid of approximately 35 × 37 × 47 mm
(Width height χ ran), with the button-shaped elevation 68 protruding from the above-mentioned cuboid by about 3 mm, connecting pins 73 attached to connector base 3 by about 10 mm and a central mandrel 74 attached to connector base 3 by about 13 mm. The shaft 41 of the display element 40 has a length of about 34 mm, its width in the area of the tab 45 is about 4 mm, in the other areas it has a circular cross-section
a diameter of about 1.5 mm; the length of the arm 43 is about 17 mm, its thickness is about 0.2 mm, its extension parallel to the pivot axis of the display element 40 tapers from about 3.5 mm near the shaft 41 to about 2 mm at its free one . End. The pin 70 protrudes from the tab 66, on which it has a diameter of about 4 mm, about 8 mm far at right angles to the tab 33 and has a diameter of about 2 mm at its free end. Further dimensions can be found in the approximately true-to-scale drawing.

Claims (18)

claims 1. Electromagnetic relay with mechanical indicator for the anchor position, thus marked . indicates that the display device (40) has a has pivotably mounted pointer (42), the display plane of which is essentially at right angles to having its pivot axis (56) and which is coupled to the relay armature (15). 2. Relay according to claim 1, characterized in that that the pointer (42) is attached to a shaft (41), whose axis coincides with the pivot axis (56) of the pointer (42). 3. Relay according to claim 2, characterized in that a drive element (tab 50) whose movement of (the stroke movement of the armature (15) is derived from the Shaft (41) engages outside of its axis. "* 4. Relay according to claim 3, characterized in that the drive element (50) is connected to the shaft (41) and to the armature (15). 5. Relay according to one of claims 2 to 4, characterized characterized in that the shaft is designed to be torsionally elastic at least in its end region facing away from the pointer and is rotatably mounted at this end. 6. Relay according to one of claims 1 to 4, characterized in that the pointer (42) when pivoting from one display position to another display position against the force of a return spring (arm 43) is moved. 7. Relay according to claim 6, characterized in that the return spring is designed as a leaf spring (arm 43) is. 8. Relay according to claim 6, characterized in that the return spring is designed as a spiral spring. 9. Relay according to one of claims 6 to 8, characterized in that the return spring with its one End area attached to the while (41) and with her other end is supported on one of the parts of the relay. 10. Relay according to claim 9, characterized in that the return spring with its other end region on Relay armature (15) or on a part attached to it '(Plate 31) is supported. 11. Relay according to one of claims 2 to 10, characterized in that on a plug base (3) of the Relay (5) a pivot bearing (hole 55) is provided for the shaft (41). 12. Relay according to claim 11, characterized in that Another pivot bearing (tab 34, recess 35) for the shaft (41) is provided on the relay armature (15). • · illiit · '* · » \ if - 13 relay according to claim 12, characterized in that the pivot bearing (34, 35) is arranged near the pivot axis of the armature (15). 14 · Relay according to claim 12 or 13 »characterized in that that the shaft (41) ″ when mounted in the pivot bearing (bore 55) and the further pivot bearing (Tab 34, recess 35) a flexural elasticity at least in one area between these bearings which is sufficient to bring the shaft under elastic bending in these bearings. 15 · Relay according to one of the preceding claims, characterized characterized in that a device (64) for mechanical actuation of the relay (5) by an in a wall (61) of a protective cap (62) of the relay (5) formed on three sides of this wall (61) separate flaps (66) is formed, wherein the connection area of the flap (66) and the wall (61) at least is partially elastic and the tab (66) at a distance from this connection area has a button-shaped elevation (68) on the outside and a nose (pin 70) on the inside, which is spaced from the armature pivot axis cooperates with a lever arm (tab 33) attached to the relay armature (15). 16. Relay according to claim 14, characterized in that the device (64) is arranged on the wall (61) of the protective cap (62) opposite a base (3) is. 17. Relay according to one of the preceding claims, characterized in that a protective cap (62) of the Relay (5) on a wall (61) has an inwardly protruding projection (pin 70) which is close to the The pivot axis (56) of the pointer (42) is arranged on one side of the pointer (42) on which a pivot bearing (Tab 34 * recess 35) of the pointer open (recess 35) is formed. 18. Relay according to claim 15 or 16 and according to claim 17, characterized in that the nose (pin 70) near the pivot axis (56) of the pointer (42) on one side of the pointer is arranged on which the pivot bearing (34, 35) of the pointer is open (recess 35) is.