ES2608642T3 - Switch insert of an electrical installation switch - Google Patents

Abstract

Switch insert (1) of an electrical installation switch, with a switch housing formed by a lower housing part (3) and by a housing cover (27), in which a rocker key is rotatably fixed. switch (41), providing at least two connection terminals (15, 18, 22) that can be electrically connected by means of a contact rocker (36) on which the rocker switch key (41) acts, provided by the lower face of the housing cover (27) fasteners that retain the contact rocker (36) in a preassembly position, * one step (29) being provided on the base wall (28) of the housing cover (27) ) for the gearing of an actuator arm of the toggle switch key (41), * resulting in the displacement of the contact rocker from the preassembly position to the operating position during assembly of the toggle switch key, characterized in that the elements fixing coughs are formed by ribs (33) in the side walls (30, 31) of the housing cover (27) with thickening (34) configured by sections and why * in the assembly of the rocker switch key (41 ) in the switch housing, the drive arm pushes the contact rocker (36) to an operating position where the contact rocker (36) is supported by a contact rocker support (19).

Description

Switch insert of an electrical installation switch

The invention relates to a switch insert of an electrical installation switch, with a switch housing formed by a lower housing part and a housing cover, in which a rocker switch key is rotatably fixed, provided the At least two connection terminals that can be electrically connected to each other by means of the rocker switch on which the rocker switch acts.

From DE 101 25 690 B4 a switching device is known with several connection terminals provided with inserted contact connections, with several switching chambers and with at least one switching rocker key in a switch housing, in which they can alternatively perform crossing switches, unidirectional switches, selector switches, double switches.

From DE 10 2009 038 234 A1 a switching mechanism of an installation switch with a switch housing is known, in which a switching rocker switch, which acts on a movable contact piece which is also rotatably disposed It is rotatably supported and in two stable final positions comes into contact with two fixed contact parts. The mobile contact piece is configured as a contact rocker and is supported by a knife holder arranged in a stirrup. Another example of a switch insert is described in US-A-4937407.

In the assembly of these switch inserts / switching devices / switching mechanisms from the different components, the assembly of the contact rocker or the rocker switch is especially problematic, since this component has to be inserted with a grana precision in a relatively narrow and hard-to-reach interior space of the switch housing. A minimally wrong positioning of the contact rocker during assembly can already lead to a subsequent failure of the switch insert during operation due to incorrect / inaccurate guidance of the contact rocker.

The purpose of the invention is to propose an optimized switch insert of an electrical installation switch.

This task is solved according to the invention thanks to a switch insert according to claim 1.

The advantages that can be achieved with the invention consist especially in that the assembly of the switch insert from the different components is simplified. In the assembly, the correct positioning of the contact rocker is especially complicated, due to the difficult access to the switching chamber in which the contact rocker has to be found in its operating position. The proposed positioning of the contact rocker in a special preassembly position by the inner face of the housing cover greatly facilitates this assembly step. The movement of the contact rocker from the pre-assembly position to the operating position occurs almost automatically and precisely in the assembly of the rocker switch.

The fixing elements are advantageously configured as ribs in the side walls of the housing cover which are widened in sections. In this way, the contact rocker can be fixed very easily in the interior space of the housing cover in the desired preassembly position between the thickening and the internal face of the housing cover.

The contact rocker preferably has lateral grooves in which the ribs fit. As a consequence, the defined and precise guidance of the contact rocker within the switch insert is guaranteed during the movement of the contact rocker from the pre-assembly position to the operating position.

The operating arm of the toggle switch key is advantageously formed by means of a rod with sliding cams which can be moved and spring loaded in a guide sleeve.

The lower housing part and the housing cover are conveniently connected to each other by means of a cover joint.

The invention is explained below in view of the embodiments shown in the drawing. This one shows in the

Figure 1 an exploded drawing of important components of the switch insert;

Figure 2 an open switch insert before the contact rocker preassembly;

Figure 3 an open switch insert after contact rocker preassembly;

Figure 4 a section through the open switch insert after pre-assembly of the contact rocker;

Figure 5 a switch insert closed before the switch rocker switch assembly;

Figure 6 a cut through a closed switch insert in a preassembly position of the contact rocker before mounting the toggle switch key;

Figure 7 a cut through a closed switch insert just before the switch rocker switch assembly;

5 Figure 8 a fully assembled switch insert;

Figure 9 a section through a fully assembled switch insert with an operating position of the contact rocker.

Figure 1 shows an exploded drawing of important components of switch insert 1, specifically

10 * the lower housing part 3 in the form of an open parallelepiped with a housing cover 27 fixed by means of a cover joint 11,

* three connection terminals that are mounted in contact chambers of the lower housing part 3, in particular a switching contact connection terminal 14 with a fixing screw 16, a fixed contact connection terminal 18 with a screw fixing 20 and a switching contact connection terminal 22 with a

15 set screw 24,

*

a contact piece 15 that is mounted on the switching contact connection terminal 14, a contact rocker support 19 that is mounted on the fixed contact connection terminal 18 and a contact piece 23 that is mounted on the terminal switch contact connection 22,

*

a contact rocker 36 that is previously mounted on the housing cover 27,

20 * a toggle switch key 41 with a drive arm, preferably formed by a guide sleeve 43, for housing a rod 44 that is guided with longitudinal movement, loaded by a spring 46, into the guide sleeve 19 and which has at its end a switching cam 45 for actuating the contact rocker 36.

Figure 2 shows an open switch insert before the pre-assembly of the contact rocker. The

25 lower housing part 3 is formed by two side walls 5, two front walls 6 and a housing bottom 4 (see also Figures 6 and 9). The housing cover 27, of U-section, has a base wall 28 to which two side walls 30, 31 fit at right angles. The side walls 30, 31 have several locking projections 32 oriented towards outside, that when closing the housing cover 27 they fit, so that they are retained, in the corresponding interlocking windows 7 of the side walls 5 of the part

30 lower housing 3.

Also important are the axle stump seats 8 on the side walls 5 of the lower housing part 3 for the reception of the shaft stumps 42 of the toggle switch key 41, which are used for the rotary fixing of the rocker key of switch 41 on the lower part of the housing 3, see also figure 7. For the pre-assembly of the contact rocker 36 in the housing cover 27, ribs 33 are provided by the

35 inner faces of the side walls 31, these ribs 33 presenting sections thickening 34. In this way the contact rocker 36 can be pre-assembled and fixed in the position required by the inner face of the housing cover 27.

The contact rocker 36 has in its two end sections respectively a switching contact 38 or 39 for contacting the contact parts 23 or 15. The central section of the contact rocker 36

40 is provided with lateral grooves 37, whose width is slightly greater than the width of the ribs 33, so that the ribs 33 can serve to guide the contact rocker 36 by fitting the ribs 33 into said grooves 37. The rocker arm fixing of contact 36 is carried out by means of the thickens 34 of these ribs 33, whose width is slightly greater than the width of the grooves 37, whereby a desired interlocking of a contact rocker 36 preassembled in the cover of the housing 27.

45 Figure 3 shows an open switch insert after pre-assembly of the contact rocker. As can be seen, the contact rocker 36 is previously mounted on the inner face of the housing cover 27, resulting in a lateral positioning by means of the interlocking of the ribs 33 in the grooves 37, avoiding thickening 34, regardless of the position , a fall of the contact rocker 36 of the housing cover, that is, the contact rocker 36 fits between the inner face of the housing cover 27 and the

50 thickening 34.

Figure 4 shows a cut through an open switch insert after pre-assembly of the contact rocker. In the lower part of the housing 3, three contact chambers 13, 17, 21 are formed, respectively separated by separation walls, in which the connection terminals 14, 18, 22. are mounted. Before assembling, the respective parts of the U-contact 15, 23 and contact rocker armrests

55 19, also U-shaped, on the switching contact connection terminals 14, 22 and on the connection terminal of the fixed connection 18. Above the contact chambers 13, 17, 21 there is a camera switching 25, in which switching operations occur by contacting the switching contacts 38, 39 of the contact rocker 36 with the contact parts 15, 23.

Figure 4 also shows, in a complementary way to Figure 3, the contact rocker 36 fitted for pre-assembly between the inner face of the housing cover 27 and the thickens 34, the ribs 33 accurately determining the positioning of the contact rocker 36 on the housing cover 27.

A closed switch insert before mounting the toggle switch key is shown in Figure 5. In the position shown, the lower housing part 3 is closed by means of the housing cover 27. The locking projections 32 are interlocked in the interlocking windows 7. In the base wall 28 of the housing cover 27 it is practiced a central passage 29 for engagement of the drive arm, that is, of the guide sleeve 43 of the toggle switch key 41.

A cut through a closed switch insert in a preassembly position of the contact rocker before mounting the toggle switch key is shown in Figure 6. The contact rocker 36 is located directly on the base wall 28 of the housing cover 27. The engagement between the rib 33 and the groove 37 is characterized. It can also be seen that the contact rocker 36 can be pressed / pushed, in the direction of the arrow A, in the direction of the contact rocker support 19, guaranteeing the gears of ribs 33 / groove 37 the guidance of the contact rocker 36 along the direction of the arrow A. In this movement of the rocker arm of contact 36 along the ribs 33, the thickening 34 must be overcome, for which a slightly increased force is used.

Figure 6 also shows actuation holes 10 made in the bottom of the housing 4 of the lower part of the housing 3, through which a drive / rotation of a screwdriver or other similar tool can be produced. the fixing screws 16, 20, 24, in order to fix / loosen the lines introduced in this way in the connection terminals 14, 18, 22 through the conductive holes 9, see figure 8.

Figure 7 shows a cut through a closed switch insert just before the switch rocker switch assembly. The rocker switch key 41 moves, in the direction of the arrow A, in the direction of the housing cover 27 so that the actuating arm, that is, the guide sleeve 43, passes through step 29 until the cam switching 45 collides with the contact rocker 36. As a consequence of the force exerted on the rocker switch 41, the contact rocker 36 is pressed on the retaining thickens 34 and slides with its grooves 37 along the ribs 33 of the lower housing part 3. When the contact rocker 36 reaches its final position or operating position, the axle dies 32 automatically fit into the axle stump supports 8 of the lower housing part 3.

A fully assembled switch insert 1 is shown in Figure 8. The toggle switch key 41 is rotatably fixed in the switch housing formed by the lower housing part 3 and the housing cover 27. In Figure 9 the conductive holes 9 already defined are defined.

A cut through a fully assembled switch insert 1 is shown in Figure 9. In this operating position the contact rocker 36 is located in the switching chamber 25 and is supported by the contact rocker arm 19, so that a switching process can be triggered by actuating the rocker switch 41. , by turning the switching cam 45, which slides on the contact rocker 36, whereby the contact rocker 36 tilts. The rod 44, which has at its end the switching cam 45, is preferably configured in the form of a rod of rectangular cross-section, which can be moved longitudinally within the guide sleeve 43, the spring 46 pressing the rod 44 in the direction of the rocker arm of contact 36. Depending on the switching position of contact rocker 36, the switching is as follows:

*

electrical connection between the switching contact connection terminal 14 and the contact part 15 - switching contact 39 of the contact rocker 36 - fixed contact connection terminal 18 with the contact rocker support 19, or

*

electrical connection between the switching contact connection terminal 22 and the contact piece 23 - switching contact 38 of the contact rocker 36 - fixed contact connection terminal 18 with the contact rocker support 19.

In the above, the connection terminals are configured in the form of threaded joints. Of course, the connection terminals can alternatively also be made in the form of elastic connection plugs / terminals.

Reference List

1 Switch insert of an electrical installation switch

3 Bottom of housing

4 Shell bottom

5 side walls

6

Front walls

7

Interlocking window

8

Axle stub supports

9

Conductive holes

5

10 Drive holes

eleven

Lid joint

12

-

13

Contact camera

14

Switching contact connection terminal

10

fifteen Contact piece

16

Fixing screw

17

Contact camera

18

Fixed contact connection terminal

19

Contact rocker support

fifteen

twenty Fixing screw

twenty-one

Contact camera

22

Switching contact connection terminal

2. 3

Contact piece

24

Fixing screw

twenty

25 Switching chamber

26

-

27

Cover of housings

28

Base wall

29

Step for drive arm / guide sleeve

25

30 Side wall

31

Side wall

32

Interlocking projections

33

Nerves

3. 4

Thickening

30

35 -

36

Contact seesaw

37

Slots

38

Switching contact

39

Switching contact

35

40 -

41

Toggle switch key

42

Shaft stumps

43

Guide sleeve

44

Dipstick

40

Four. Five Switching cam

46

Spring

Claims (4)

1. Switch insert (1) of an electrical installation switch, with a switch housing formed by a lower housing part (3) and by a housing cover (27), in which a key is rotatably fixed 5 toggle switch (41), provided at least two connection terminals (15, 18, 22) that can be electrically connected by means of a contact rocker (36) on which the rocker switch key (41) acts, provided by the lower face of the housing cover (27) fasteners that retain the contact rocker (36) in a preassembly position, * provided in the base wall (28) of the housing cover (27) a passage (29) for the gearing of an actuator arm 10 of the toggle switch key (41), * causing the movement of the contact rocker from the pre-assembly position to the operating position during the assembly of the switch rocker, characterized in that the fixing elements are formed by ribs (33) in the side walls (30, 31 ) of the housing cover (27) with thickening (34) configured by sections and why 15 * when the switch rocker switch (41) is mounted on the switch housing, the drive arm pushes the contact rocker (36) to an operating position where the contact rocker (36) is supported by a contact rocker support (19). 2. Switch insert according to claim 1, characterized in that the contact rocker (36) has 20 lateral grooves (37) in which the ribs (33) penetrate conductively. 3. Switch insert (1) according to claim 1, characterized in that the actuator arm is configured by means of a rod (44) movable and spring loaded on a guide sleeve (43) and provided with its end of a switching cam (45). 4. Switch insert (1) according to claim 1, characterized in that the lower housing part (3) and the housing cover (27) are connected to each other through a cover joint (11).