CN211604943U

CN211604943U - Connecting device for an operating mechanism of an electrical switching device and electrical switching device

Info

Publication number: CN211604943U
Application number: CN202020382576.XU
Authority: CN
Inventors: D.特雷福特
Original assignee: Schneider Electric Industries SAS
Current assignee: Schneider Electric Industries SAS
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-09-29
Anticipated expiration: 2030-03-24

Abstract

The present invention proposes a connection device for an operating mechanism of an electrical switching apparatus, comprising two connecting levers and a connecting rod connected between the connecting levers, the connecting levers being rotatable with respect to the operating mechanism and respectively comprising at least one mounting hole, the connecting levers being made of plastic material, the connecting rod being made of metal wire and comprising an elongated intermediate portion and two end portions bent with respect to the intermediate portion; and, the connecting means is configured such that, when the link and the crank arm are operated such that the end portions are forcibly inserted into the respective mounting holes, the end portions can be closely fitted with the mounting holes and cannot be detached from the mounting holes. The utility model provides a neotype connecting device for electrical switchgear's operating device is showing reduction in manufacturing cost, and the structure is more simple, assembles portably reliably.

Description

Connecting device for an operating mechanism of an electrical switching device and electrical switching device

Technical Field

The utility model relates to an electrical switching apparatus field. In particular, the present invention relates to a connection device for an operating mechanism of an electrical switching apparatus, and an electrical switching apparatus comprising such a connection device for an operating mechanism of an electrical switching apparatus.

Background

In an electrical switching apparatus, an operating mechanism is used to transmit switching power of the switching apparatus, and a connecting device of the operating mechanism is used to transmit motion between rotating parts.

With reference to figures 1 and 2, in the known connection devices for operating mechanisms, two crank arms (substantially metallic) are respectively interconnected with a connecting rod, which is in the form of a sheet-metal element with two assembly axes. The crank arm and the connecting rod are installed through an axial stop piece, such as a elastic retainer ring or a nut. The connecting device has high manufacturing cost and is complicated to assemble.

There is therefore a need in the art for a new type of connection device for an operating mechanism of an electrical switching apparatus that is simple in construction, reliable in assembly, and cost-optimized.

SUMMERY OF THE UTILITY MODEL

To this end, in order to solve at least one of the above technical problems, the present invention proposes, in one aspect, a connecting device for an operating mechanism of an electrical switching apparatus, comprising two levers rotatable with respect to the operating mechanism and respectively comprising at least one mounting hole, and connecting rods connected between the levers, the levers being made of a plastic material, the connecting rods being made of a metal wire and comprising an elongated intermediate portion and two end portions bent with respect to the intermediate portion; and, the connecting means is configured such that, when the link and the crank arm are operated such that the end portions are forcibly inserted into the respective mounting holes, the end portions can be closely fitted with the mounting holes and cannot be detached from the mounting holes.

According to a preferred embodiment of the invention, the connecting rod is made of steel wire.

According to a preferred embodiment of the invention, the diameter of the connecting rod is in the range of 1mm to 3 mm. Preferably, the diameter of the connecting rod is 2 mm.

According to a preferred embodiment of the invention, the electrical switching apparatus is a medium voltage secondary switching apparatus.

On the other hand, the present invention also proposes an electrical switching apparatus comprising a connection device for an operating mechanism of an electrical switching apparatus according to the preceding.

The utility model provides a connecting device for operating device of electrical switchgear has optimized manufacturing cost to the structure is more simple reliable.

Drawings

The above and other features and advantages of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings, and the following description and drawings are given for illustrative purposes only, and do not limit the scope of the present invention in any way. Moreover, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

FIG. 1 is a perspective view of a prior art linkage used between rotating components of an operating mechanism;

FIG. 2 is a perspective view of another perspective of a prior art linkage used between rotating components of an operating mechanism;

fig. 3 is a schematic perspective view of a connecting rod of an operating mechanism for an electrical switching apparatus according to the present invention, viewed from the front;

fig. 4 is a perspective view of a connecting rod of an operating mechanism for an electrical switching apparatus according to the present invention from the back.

List of reference numerals

1 first crank arm

2 second crank arm

3 third crank arm

11. Mounting hole of 21, 22, 31 crank arm

4 first connecting rod

5 second connecting rod

41. Ends of

links

42, 51, 52

43. Intermediate part of 53 connecting rod

Detailed Description

The foregoing and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the embodiments with reference to the accompanying drawings. The following description contains various specific details to aid in this understanding, but these details should be construed as merely exemplary.

Throughout the description and claims of this specification, the word "comprise", and variations such as "comprises" and "comprising", means "including but not limited to", and is not intended to exclude other components, integers or steps. It is to be understood that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. In the present application, the expression "or" encompasses any and all combinations of the words listed together. Although various elements of the present invention may be described using expressions such as "first" and "second," they are not intended to limit the respective elements. The above expressions are not intended to limit the order or importance of the corresponding elements. The above description is intended to distinguish one element from another, and "a first element" may be written as "a second element", and similarly "a second element" may be written as "a first element", without departing from the scope of the present invention. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

In addition, the directional terms such as "upper", "lower", "left", "right", and the like mentioned herein are used only for showing relative positional relationships with respect to the drawings, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed accordingly.

The present invention provides a connecting device for an operating mechanism of an electrical switching apparatus, which is described below with reference to the accompanying drawings. The electrical switching apparatus may be a medium voltage secondary switching apparatus. The electrical switching apparatus may be a fused disconnect switch.

Specifically, the connecting device includes two crank arms and a link connected between the crank arms, such as a pair of crank arms 1, 2 (may be referred to as a first crank arm, a second crank arm) and a link 4 (may be referred to as a first link) interconnected therewith as illustrated, or another pair of crank arms 2, 3 (may be referred to as a second crank arm, a third crank arm) and a link 5 (may be referred to as a second link) interconnected therewith. The crank arm is rotatable relative to the operating mechanism so as to be operated to rotate to open and close the switch mechanism. The

crank arms

1, 2, 3 are preferably made of a plastic material and, as shown in fig. 3, the

crank arms

1, 2, 3 comprise at least one

mounting hole

11, 21, 22, 31, respectively, for assembly with the connecting rods 4, 5.

The links 4, 5 are made of metal wire, in the preferred embodiment of the present application the links 4, 5 are made of steel wire. Preferably, the diameter of the connecting rods 4, 5 is in the range of 1mm to 3 mm. The diameter of the connecting rods 4, 5 is most preferably 2 mm. As shown in fig. 4, the links 4, 5 include elongated intermediate portions 43, 53 and respective two

end portions

41, 42, 51, 52 bent with respect to the intermediate portions, the two bent end portions serving as fitting shafts for connecting the crank arms with the links.

As shown in fig. 4, when the first link 4 and the first and

second crank arms

1, 2 are operated such that the end portions 41, 42 of the first link 4 are forcibly inserted into the

respective mounting holes

11, 21, the end portions 41, 42 can be tightly fitted with the

mounting holes

11, 21 by the resilience of the crank arms of the plastic material and the wire links, and once assembled, the end portions cannot be disengaged from the mounting holes again during the operation of the operating mechanism.

Similarly, the same is true of the assembly of the second link 5 and the second and

third crank arms

2, 3, so that when the second link 5 is inserted into the

mounting holes

22, 31 of the respective crank arms, the

end portions

51, 52 of the second link 5 can be tightly fitted with the mounting holes and can no longer be disengaged from the mounting holes during operation of the operating mechanism. As shown in fig. 4, after the second link 5 is inserted into the mounting hole 31 of the third crank arm 3, the end portion 52 can be bent again to ensure the reliable assembly.

As before, the utility model provides a neotype connecting device for electrical switchgear's operating device is showing reduction in manufacturing cost, and the structure is more simple, and the assembly is simple and convenient reliable. Furthermore, the utility model also provides an electrical switching apparatus including this connecting device.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims. It will be appreciated by persons skilled in the art that variations and modifications may be made to the various embodiments described herein without departing from the scope of the invention as defined by the appended claims. Moreover, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.

Finally, it is also to be understood that certain features of the embodiments may not be necessary to solve a particular technical problem, and thus may be absent or omitted without affecting the solution of the technical problem or the formation of a technical solution; furthermore, the features, elements, and/or functions of one embodiment may be combined, coupled, or coordinated with the features, elements, and/or functions of one or more other embodiments as appropriate, unless the combination, coupling, or coordination is clearly not practical.

Claims

1. A connecting device for an operating mechanism of an electrical switching apparatus, the connecting device comprising two crank arms and a connecting rod connected between the crank arms, the crank arms being rotatable relative to the operating mechanism and each comprising at least one mounting hole, characterized in that,

the crank arm is made of a plastic material, the link is made of a metal wire and includes an elongated middle portion and two end portions bent with respect to the middle portion;

and, the connecting means is configured such that, when the link and the crank arm are operated such that the end portions are forcibly inserted into the respective mounting holes, the end portions can be closely fitted with the mounting holes and cannot be detached from the mounting holes.

2. The connecting device for an operating mechanism of an electrical switching apparatus according to claim 1 wherein the link is made of steel wire.

3. The connection device for the operating mechanism of electrical switching apparatus according to claim 1 wherein the diameter of the connecting rod is in the range of 1mm to 3 mm.

4. A connection device for an operating mechanism of an electrical switching apparatus according to claim 3, wherein the diameter of the connecting rod is 2 mm.

5. Connection arrangement for an operating mechanism of an electrical switching apparatus according to any of claims 1 to 4, characterized in that the electrical switching apparatus is a medium voltage secondary switching apparatus.

6. Electrical switching apparatus, characterized in that it comprises a connection device for an operating mechanism of an electrical switching apparatus according to any one of the preceding claims.