CN1155976C - Coupling device - Google Patents

Abstract

A connecting device for use on the actuator of a switching device (1), such as that used in an automatic fuse. The connecting device has a through hole (33) in the actuator into which a connecting member (40) can be inserted. In the assembled position of the inserted connecting member (40), its first end (47) protrudes from one end (35) of the through hole (33), while its second end (50) is flush with the opposite end (34) of the through hole (33). In this position, the connecting member (40) forms a groove (25) at one end of the actuator, while the end (47) of the connecting member (40) protrudes at its opposite end. The shape of this protruding end (47) is adapted to fit into the groove (25).

Description

Connecting device

technical field

The invention relates to a coupling device for an actuator of a switchgear, comprising a through hole perpendicular to the moving direction of the movable member, a coupling piece adapted to be inserted into the through hole, at the opposite end of the coupling piece It has a first end and a second end, in the inserted state, the first end protrudes from one end of the through hole, and the second end is flush with the opposite end of the through hole.

Background technique

Such coupling devices are used, for example, on single-pole automatic fuse cutouts, residual current operated devices or actuating parts of protective electromechanical switches. Often switching devices such as accessory switches, remote circuit breakers or auxiliary switches are mounted or stacked on such switches. For synchronous actuation of the switches, the actuating members of such a stack of switches can be connected to each other by means of a coupling.

It is known from the prior art to design the coupling member as a circular shaft which is movable through a through hole of an adjacent switch actuator. For example an auxiliary switch could be mounted on one LS switch, the circular shaft moving in the through hole of the actuating member of both switches. When the circular shaft is inserted into the actuator through hole, the circular shaft cannot be used to mount other devices on the attached switch already attached.

It is also known from the prior art to integrally form a protrusion on the actuating part of the auxiliary switch as a coupling part. When the auxiliary switch is mounted on, for example, an LS switch, the protrusion fits into a suitable recess in the actuating member of the LS switch, thereby coupling the two switches to each other. However, due to its design, this auxiliary switch actuator with protrusion can only be mounted on the left or right side of the LS switch actuator.

Contents of the invention

It is therefore the object of the present invention to provide a coupling device for a switch actuating element, whereby the actuating elements of other switching devices can be easily and quickly coupled to both sides of the actuating element. Furthermore, the coupling device allows a plurality of switching devices to be stacked.

The above object is achieved by a coupling device for a movable part of a switchgear: it comprises a through hole perpendicular to the moving direction of the movable part, a coupling part adapted to be inserted into said through hole, and said coupling part The opposite end portion of has a first end portion and a second end portion, in the inserted state, the first end portion protrudes from one end of the through hole, and the second end portion is connected to the opposite end portion of the through hole flush, wherein said second end has a protruding portion through which a groove is formed at the end of the corresponding through hole, said first end being shaped to fit into said groove Inside.

The invention is described below in the form of an exemplary embodiment with the aid of the drawings.

Description of drawings

Fig. 1 is a schematic side view of a switch;

Figure 2a is a cross-sectional view of a switch actuator including a coupling;

Figure 2b is a cross-sectional view of the coupled switch actuator;

Figure 3a is a cross-sectional view of an actuator without a coupling;

Figure 3b is a side view of the coupling;

Fig. 4 is a schematic diagram of the space of the coupling and the actuator;

Figure 5a is a cross-sectional view of the LS switch;

Figure 5b is a spatial schematic view of the LS switch release lever connected to a corresponding piece of a switch device;

Figures 6a and 6b are schematic spatial views of other embodiments of the coupling device according to the present invention.

Detailed ways

FIG. 1 shows a schematic side view of a single-pole switch 1 . The switch 1 includes a knob 10 usually made of synthetic resin such as thermoplastic. The knob is supported in the switch 1 and can be moved about an axis of rotation into an on-position and an off-position. The knob 10 comprises an actuating member 20, which is attached to the knob 10 via a plug-in connection terminal 2 shown in FIG. 2a. In addition, a through hole 33 extends parallel to the pivot axis 11 in the actuating element 20 .

Opposite the rotary knob 10, the switch 1 shown in FIG. 1 comprises a mounting part 12, by means of which the switch 1 can be attached to a not shown fixing rail.

Figure 2a shows a cross-sectional view of the actuating member 20 described above. To form the coupling means, a coupling piece to be described below is inserted into the through hole 33 of the actuator.

The through hole 33 of such an actuator 20 is rectangular in shape, with inner walls 21 to 24 - shown in FIG. 4 . In addition, the through hole 33 is usually divided into an insertion portion 36 and a clamping portion 37, as shown in FIG. 3a.

By means of the insertion portion 36, the coupling piece 40 can be easily inserted into the through hole 33 from the insertion end 34 on the left in FIG. 3a. For this reason, in the insertion portion 36 , the distance between the upper and lower inner walls 21 and 22 is increased toward the insertion end 34 .

Immediately following the insertion part 36 is a clamping part 37 for fixing the coupling part 40 and preventing it from falling out of the through hole. The outlet end 35 of the through hole 33 on the right in FIG. 3 a is attached to the clamping portion 37 .

Inside the clamping portion 37 there is a catch nose 26, as shown in Figure 3a, on the upper inner wall 21 of the through hole 33, which catch nose is used to interlock with a coupling 40 described below. A shoulder 27 is formed on the lower inner wall 22 of the through hole 33 inside the through hole 33 , offset relative to the outlet end 35 . The shoulder 27 has a delimiting surface 28 and a bearing surface 29 . The delimiting surface 28 faces the insertion end 34 of the through hole 33 .

Figure 3b shows the coupling 40 in detail. Correspondingly, the coupling member 40 comprises a substantially cuboidal base portion 51, as defined by the dashed line in Fig. 3b. The base portion 51 is connected to the front end portion 47 on the right and to the rear end portion 50 on the left in FIG. 3b. Projections 41 , 42 and extensions 43 , 44 are located at the front end portion 47 and the rear end portion 50 .

Specifically, the protrusion 41 at the rear end portion 50 and the protrusion 42 at the front end portion 47 point in opposite directions along the axis of symmetry X of the base portion 51 . In addition, the projections 41 and 42 - in the normal direction of the axis of symmetry X - are offset from each other. That is, the protruding portion 41 of the rear end portion 50 is opposed to the protruding portion 44 of the front end portion 47 . Correspondingly, the protruding portion 43 of the rear end portion 50 is opposed to the protrusion 42 of the front end portion 47 .

According to FIG. 3 b , the extension 44 of the front end portion 47 is followed by a transition portion 45 on the longitudinal underside 49 of the coupling piece 40 . Opposite the transition section 45 , on the longitudinal upper side 48 there are two grooves 46 a , 46 b which are spaced apart from each other in the direction of the axis of symmetry X .

4 shows how the coupling piece 40 is inserted into the through hole 33 of the actuating piece 20 . Accordingly, first, the front end portion 47 of the link 40 is inserted into the insertion portion 36 of the through hole 33 through the inlet port 34 in the arrow A direction. The front end portion 47 of the coupling piece 40 can pass freely through the insertion portion 36 of the through hole 33 until the front end portion 47 abuts against the catch nose 26 or the shoulder 27 of the clamping portion 37 .

In order to ensure that the coupling 40 overcomes the resistance of the gripper nose 26 and passes through the clamping portion 37, the shear force exerted on the rear end portion 50 of the coupling will be greatly increased. With this sufficient shearing force, the front end portion 47 of the coupling member 40 can pass through the clamping portion 37 and enter the first assembly position shown in FIG. 2a.

In this first assembly position, the protrusion 41 of the coupling piece 40 is inserted into the through hole 33 so that it is flush with the inlet end 34 of the through hole 33 . In addition, the protruding portion 43 of the link forms a recess 25 together with the inner walls 21 , 23 and 24 of the through hole 33 . In contrast to the embedded protrusion 41 , an opposite protrusion 42 protrudes from the outlet end 35 of the through hole 33 .

To determine the first assembly position as shown in FIG. 2a, the catch nose 26 in the through hole 33 is locked in one 46a of the recesses 46a, 46b. Furthermore, in the first assembled position—as shown in FIG. 2 a—the transition portion 45 of the coupling piece 40 can be in contact with the delimiting surface 28 of the shoulder 27 .

Starting from the first assembly position shown in FIG. 2a, the coupling part 40 can be moved into a second assembly position. To do this, it is only necessary to exert a pressure against the insertion direction indicated by arrow A on the projection 42 of the coupling part 40 . Thus, first the locking between the nose 26 and the groove 46a is released, and then the coupling 40 is moved until the nose 26 is locked in the other groove 46b. By means of this locking, a second assembly position is determined—corresponding to the first assembly position. The displacement of the link between the first assembly position and the second assembly position corresponds to the distance of the grooves 46a, 46b.

In the second assembly position, the protrusion 42 of the coupling piece 40—as previously described—is inserted into the through hole 33 so that it is flush with the outlet end 35 of the through hole 33 . In addition, the protruding portion 44 of the link forms a groove together with the inner walls 22, 23 and 24 of the through hole. On the other hand, the protrusion 41 protrudes from the inlet end 34 of the through hole 33 .

It can also be seen from FIG. 2 a that the transition portion 45 is adapted to the shoulder 27 . As a result, the coupling piece 40 can only be inserted into the through hole 33 from the correct side.

If the coupling piece 40 is inserted into the through hole 33 from the wrong side, the coupling piece 40 gets stuck in the clamping portion 37 of the through hole. As a result, a coupling piece inserted incorrectly into the through hole 33 cannot be clamped correctly.

Consider below the case where an additional auxiliary switch or accessory switch is attached to the LS switch mounted on a fixed rail not shown for simultaneous actuation.

In this context, the actuating members of the switches stacked on top of each other are shown in Fig. 2b. Specifically, another accessory switch or auxiliary switch is shown stacked to the left of the LS switch (on the right side of FIG. 2b ) in FIG. 2b.

To this end, in each actuator 20 of the accessory switch to be installed, the coupling 40 is first placed in the first assembly position shown in Figure 2a, while the actuator of the LS switch (on the right in Figure 2b) It is not necessary to provide any such couplings 40 .

Next, the accessory switches are stacked one by one to the left side of the LS switch actuator 20 through their fitting portion 12, whereby the actuator protrusion 42 of the first accessory switch fits into the through hole 33 of the LS switch actuator. middle. The actuator protrusion 42 of the second accessory switch (the left switch in Fig. 2b) is positively inserted into the recess 25 of the first accessory switch.

According to the invention, the actuators of these accessory switches can be easily modified so that they can be stacked not only - in the manner shown in Fig. 2b - to the left of the LS switch, but also to the right of the LS switch. To this end, the link 40 in the accessory switch actuator is moved from the first assembly position shown in FIG. 2b to the second assembly position. In the second assembled position, the projection 41 of the coupling piece 40 protrudes into the through-opening 33 of the LS switch actuator.

According to the invention, it is also not necessary to provide the actuator 20 of the LS switch with a coupling for mounting and/or stacking accessory switches.

The second accessory switch is stacked to the right of the first accessory switch. The coupling piece 40 of the second accessory switch—just like the coupling piece 40 of the first accessory switch—is in the second assembly position. Subsequently, in the second assembly position, the protrusion 41 of the second accessory switch stretches into the groove of the first accessory switch, and the groove is formed by the protruding part of the coupling part and the inner wall of the through hole 33 of the first accessory switch. 22, 23 and 24 make up.

According to Fig. 2b, the actuator 20 of the auxiliary switch can then be adapted to be stacked on both sides of the LS switch - ie right and left - only by moving its coupling 40. This easy-to-install stacking is also possible between the actuators of the accessory switch.

It is therefore of course also possible to mount auxiliary devices on both sides of the LS switch and to connect their actuating parts with the actuating parts of the LS switch.

Another embodiment of the invention is shown in Figures 5a and 5b.

FIG. 5 a shows an LS switch comprising a knob 10 , an actuator 20 and a release lever 60 . The release lever 60 is movable around a rotary shaft 62 and has a hole 61 . This hole 61 can be a through hole, which has the same shape as the through hole 33 shown in FIG. Alternatively, such a blind hole may have any shape suitable for receiving the first or second end portion 47,50.

A lever similar to the release lever 60 is also provided in the switchgear to be installed. Figure 5b shows a portion 70 of the rod which has a through-hole 33 of the same shape as the through-hole 33 in Figure 3a. A link 40 as described in the first embodiment can be inserted into the through hole in the same manner.

In addition, there are openings (not shown) on the left and right housing walls of the LS switch and switchgear to be installed, which expose the entire movement track of the holes 61 and/or 33 .

In order to obtain a coupling between the switching device to be installed and the LS switch, a coupling piece 40 is inserted into the through hole 33 of the switching device to be installed.

Thus, also in the second embodiment, simultaneous switching of the LS switch and the installed switching device is achieved.

Also in this embodiment, it is of course also possible to install a plurality of switching devices on one side of the LS switch, or on both sides of the LS switch at the same time.

In order to minimize wear of the coupling 40, the material of the coupling 40 is preferably metal. The coupling element can thus be punched out from a sheet metal very simply and inexpensively in a process suitable for mass production. In this case, the basic structure of the coupling is a cuboid.

Instead of the coupling used in FIGS. 1 to 5 , other embodiments are also possible which allow a form-fit between adjacent actuating elements acting perpendicularly to the axis of rotation 11 . The cuboid-shaped coupling 40 shown in FIG. 6 a comprises, above and below the end 47 , the axis of symmetry X, projections 44 a , 44 b forming a protrusion 42 symmetrically located on the axis X of symmetry. At the opposite end 50 , above and below the axis of symmetry X there are projections 41 a , 41 b which form a projection 43 located symmetrically on the axis of symmetry X such that the projection 42 fits in this projection 43 .

Alternatively, the coupling piece 40 can also be configured as a cylinder according to FIG. 6b. Accordingly, a journal-like end 47 is attached to the base part 51 , which protrudes from the base part 51 along the axis of symmetry X. As shown in FIG. The opposite end 50 is correspondingly provided with a groove along the axis of symmetry X. In this case, the grooves are formed independently of the inner wall of the through-hole 33 , so that only a form-locking effect perpendicular to the axis of rotation X is produced between adjacent coupling elements 40 .

Claims (13)

1. the coupling arrangement of a switching device movable piece comprises

Through hole (33) perpendicular to the movable piece direction of motion,

A connector (40) that is suitable for being inserted in the described through hole (33) has first end and the second end (47,50) at the opposed end of described connector (40),

At the insertion state, described first end (47) stretches out from an end (35) of described through hole (33), and described the second end (50) is concordant with the opposite ends (34) of described through hole (33), it is characterized in that,

Described the second end (50) has an extension (43), forms a groove (25) by this extension in the end (34) of respective through hole (33),

The shape of described first end (47) is suitable for being assemblied in the described groove (25).

2. coupling arrangement as claimed in claim 1, it is characterized in that, described connector (40) has a rectangular substantially essential part (51), described first end (47) comprises a protuberance (42) and the extension (44) that is positioned under the symmetry axis (X) on the symmetry axis (X) that is positioned at described essential part (51), and described the second end (50) comprises the extension (43) and the protuberance (41) that is positioned under the symmetry axis (X) that are positioned on the symmetry axis (X).

3. coupling arrangement as claimed in claim 1 is characterized in that, described connector (40) comprises a rectangular substantially essential part, and the extension of described the second end (43) extend in the described the second end (50), forms the groove along symmetry axis (X),

Described first end (47) comprises a protuberance (42), and it stretches out along symmetry axis (X) from described essential part (51).

4. coupling arrangement as claimed in claim 2, it is characterized in that, described through hole (33) has clamping part (26,27), the described connector that is inserted into (40) is clamped at wherein, described clamping part (26,27) comprise a shoulder (27), it is formed on the inwall (22) relative with grabbing nose (26) of described through hole, for connector is inserted into the described through hole (33) from a correct side along direction of insertion (A), described connector has a transition portion (45), and the profile phase of its profile and described shoulder (27) adapts to.

5. coupling arrangement as claimed in claim 4, it is characterized in that, described clamping part (26,27) comprise a described nose (26) of grabbing, it is suitable for being locked in described connector (40) and goes up two groove (46a that form, 46b) any one makes the described connector that is inserted into can be fixed on first rigging position and second rigging position.

6. coupling arrangement as claimed in claim 4 is characterized in that, at second rigging position, described the second end (50) stretches out from the end (34) of described through hole (33), and described first end (47) is concordant with the opposite ends (35) of described through hole (33).

7. coupling arrangement as claimed in claim 4 is characterized in that, for described connector is fixed on first rigging position, the described transition portion (45) of described connector can contact with the defining surface (28) of described shoulder (27).

8. as the described coupling arrangement of one of claim 1 to 7, it is characterized in that described connector (40) has a cuboid basic structure, and stamp out with metallic plate.

9. as the described coupling arrangement of one of claim 1 to 7, it is characterized in that described connector has a columniform basic structure.

10. coupling arrangement as claimed in claim 1 is characterized in that described movable piece is an actuated piece, is used for the described switching device of manual activation.

11. coupling arrangement as claimed in claim 10 is characterized in that, described actuated piece attaching is on the knob (10) of described switching device (1).

12. coupling arrangement as claimed in claim 11 is characterized in that, described actuated piece is connected by plug-in type splicing ear (2) with the described knob (10) of described switching device (1).

13. coupling arrangement as claimed in claim 1 is characterized in that, movable piece is a bar that is positioned at described switching device inside, and it can be approaching by the opening on the housing from the both sides of described switching device.

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