CN113889369A

CN113889369A - Counter linkage device

Info

Publication number: CN113889369A
Application number: CN202010621577.XA
Authority: CN
Inventors: 周旭东; 何春; 张健; 杨玉勇
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2022-01-04

Abstract

A counter linkage, characterized by: the counter linkage device (9) comprises a transmission connecting rod (901), the transmission connecting rod (901) can rotate around the center of a self shaft, one end of the transmission connecting rod (901) is linked with one end of a toggle connecting rod (902) in the rotating process, the toggle connecting rod (902) is installed on a positioning pin shaft (903) and can rotate around the positioning pin shaft (903), and the other end of the toggle connecting rod (902) is linked with a counter gear lever (904) to drive a counter digital meter (905) to perform action counting in the rotating process; the toggle connecting rod (902) is connected with a reset torsion spring (906) which can enable the toggle connecting rod to rotate and reset so as to drive the transmission connecting rod (901) to rotate and reset. The counter linkage device resets by utilizing the reset torsion spring, simplifies the structure of the counter linkage device, avoids the jamming phenomenon and improves the counting reliability of the counter linkage device.

Description

Counter linkage device

Technical Field

The invention belongs to the technical field of electric operating mechanisms of circuit breakers, and particularly relates to a counter linkage device for an electric operating mechanism of a circuit breaker.

Background

The traditional miniature circuit breaker and the opening and closing actions of the switch need manual operation. With the development of smart power grids, miniature circuit breakers and switch products capable of reliably realizing automatic opening and closing are urgently needed. Therefore, electric operation devices have been commercially available which are used in combination with a small circuit breaker and a switch and can drive the opening and closing operations of the small circuit breaker and the switch. Through sending the instruction to this electric operating means, can realize driving miniature circuit breaker, the automatic separating brake of switch, combined floodgate, and do not need artifical manually operation, effectively practiced thrift manpower and materials, use extensively day by day. The common electric operating mechanism in the existing market can not automatically measure the self action times or the reset of the counting device adopts the spring reset, and the reset force and the poke rod piece which are provided by the installation mode of the spring are difficult to keep on the same straight line, so that the interference phenomenon is easy to occur.

Disclosure of Invention

The invention aims to overcome the defect that the reset force provided by the counter linkage device of the electric operating mechanism of the existing circuit breaker is difficult to keep on the same straight line with the poke rod piece due to the installation mode of the spring, and the jamming phenomenon is easy to occur.

Technical scheme

In order to achieve the above object, the present invention provides a counter linkage device, comprising: the counter linkage device comprises a transmission connecting rod, the transmission connecting rod can rotate around the center of a self shaft, one end of the transmission connecting rod is linked with one end of a toggle connecting rod in the rotation process, the toggle connecting rod is arranged on a positioning pin shaft and can rotate around the positioning pin shaft, and the other end of the toggle connecting rod is linked with a counter stop lever to drive a counter digital meter to perform action counting in the rotation process;

the toggle connecting rod is connected with a reset torsion spring which can enable the toggle connecting rod to rotate and reset, so that the drive connecting rod is driven to rotate and reset.

Further, the transmission connecting rod comprises an upper rod part, the upper rod part is connected with one end of the rotating shaft part, the other end of the rotating shaft part is connected with the tail rod part, the tail rod part is linked with one end of the stirring connecting rod, and the transmission connecting rod can rotate around the shaft center of the rotating shaft part.

Furthermore, the reset torsion spring is arranged on the positioning pin shaft, one end of the reset torsion spring is hung on a pin extending out of the toggle connecting rod, and the other end of the reset torsion spring is propped against the shell.

Further, the transmission link is mounted on the housing 1 with a rotation shaft portion.

Further, the positioning pin shaft is mounted on the housing.

Advantageous effects

According to the counter linkage device provided by the invention, the reset torsion spring is used for resetting, the structure of the counter linkage device is simplified, the jamming phenomenon is avoided, and the counting reliability of the counter linkage device is improved.

Drawings

Fig. 1 is a perspective view of an electric operating mechanism in an embodiment of the present invention.

Fig. 2 is an exploded view of an electric operating mechanism in an embodiment of the present invention.

Fig. 3 is a diagram showing the relationship between the meshing positions of the worm and the third gear in the embodiment of the present invention.

Fig. 4 is a diagram showing the meshing position of the final stage gear and the output shaft ring gear in the embodiment of the invention.

FIG. 5 is a first perspective view of a counter linkage in an embodiment of the present invention.

FIG. 6 is a second perspective view of the counter linkage in an embodiment of the present invention.

FIG. 7 is a schematic structural diagram of a drive link in an embodiment of the present invention.

FIG. 8 is a schematic structural diagram of a toggle link in an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Examples

The electric operating mechanism shown in fig. 1 and 2 comprises a housing 1, a motor 2 is mounted on the housing 1, a first gear 3 is mounted on an output shaft of the motor 1 extending into the housing 1, the first gear 3 is meshed with a second gear 4, the second gear 4 and a worm 5 are coaxially and integrally mounted, the second gear 4 can drive the worm 5 to rotate in the same direction while rotating, the worm 5 is meshed with a third gear 6 to drive the third gear 6 to rotate, and the third gear 6 is preferably a helical gear in this embodiment. The third gear 6 and the first-stage gear 701 of the gear set 7 are coaxially and integrally mounted, the third gear 6 rotates and can drive the first-stage gear 701 to rotate in the same direction, the last-stage gear 704 of the gear set 7 is meshed with the output shaft gear ring 8 and can drive the output shaft gear ring 8 to rotate, and in the embodiment, the last-stage gear 704 is meshed with the output shaft gear ring 8. A shifting boss 801 is arranged outside the output shaft gear ring 8, and the shifting boss 801 can be linked with the counter linkage device 9 in the rotating process of the output shaft gear ring 8 to realize the counting of the action times of the electric operating mechanism by the counter linkage device 9.

Specifically, as shown in fig. 1,2, 3 and 4, the gear set 7 includes a primary gear 701, the primary gear 701 is engaged with a secondary gear 702 to drive the secondary gear 702 to rotate in a reverse direction, the secondary gear 702 and a tertiary gear 703 are coaxially and integrally installed, the secondary gear 702 rotates while driving the tertiary gear 703 to rotate in a same direction, and the tertiary gear 703 is engaged with a final gear 704 to drive the final gear 704 to rotate in a reverse direction.

As shown in fig. 5 and 6, the counter linkage device 9 includes a transmission link 901, the transmission link 901 can rotate around its own axis, one end of the transmission link 901 is linked with the toggle boss 801 during the rotation process, the other end of the transmission link 901 is linked with one end of the toggle link 902, the toggle link 902 is mounted on the positioning pin 903 and can rotate around the positioning pin 903, and the positioning pin 903 is mounted on the housing 1. When the toggle connecting rod 902 rotates, the other end of the toggle connecting rod is linked with the counter gear lever 904 to drive the counter digital meter 905 to count; the toggle link 902 is connected with a reset torsion spring 906 which can make the toggle link rotate and reset so as to drive the transmission link 901 to rotate and reset. In this embodiment, the reset torsion spring 906 is mounted on the positioning pin 903, one end of the reset torsion spring is hung on a pin 902a extending from the toggle link 902, and the other end of the reset torsion spring abuts against the housing 1.

As shown in fig. 7 and 8, the transmission link 901 includes an upper rod portion 901a, the upper rod portion 901a is connected to one end of a rotation shaft portion 901b, the other end of the rotation shaft portion 901b is connected to a tail rod portion 901c, the tail rod portion 901c is linked with one end of the toggle link 902, and the transmission link 901 can rotate around the axial center of the rotation shaft portion 901 b. The transmission link 901 is mounted on the housing 1 with a rotation shaft portion 901 b.

The working process of the embodiment is as follows: the motor 2 is electrified, the first gear 3 starts to rotate clockwise, the second gear 4 starts to rotate anticlockwise, the second gear 4 and the worm 5 are coaxially integrated, the worm 5 starts to rotate anticlockwise, the third gear 6 and the first-stage gear 701 are coaxially integrated, the first-stage gear 701 starts to rotate anticlockwise, the second-stage gear 702 starts to rotate clockwise, the second-stage gear 702 and the third-stage gear 703 are coaxially integrated, the third-stage gear 703 starts to rotate clockwise, the last-stage gear 704 drives the output shaft gear ring 8 to rotate clockwise, and energy is stored in the circuit breaker.

When output shaft ring gear 8 rotated, stir every turn of boss 801 and all can contact the connecting rod on the counter aggregate unit, make the counter begin to count, specific process is: as shown in fig. 5, in an initial state, the toggle boss 801 applies F force to the upper end of the transmission link 901, so that the transmission link 901 rotates counterclockwise around the axis, at this time, the lower end of the transmission link 901 rotates counterclockwise around the axis to contact the toggle link 902, so that the front end of the toggle link 902 rotates clockwise around the positioning pin 903, at this time, the rear end of the toggle link 902 contacts the counter lever 904, so that the counter lever 904 rotates clockwise, and the counter number meter 905 operates. When the external force applied to the toggle boss 801 disappears, the cylindrical pin 902a is extruded by the reset torsion spring 906, the front end of the toggle connecting rod 902 rotates anticlockwise around the positioning pin 903, the front end of the toggle connecting rod 90 contacts the lower end of the transmission connecting rod 901, the lower end of the transmission connecting rod 901 rotates clockwise around the axis, and the upper end of the transmission connecting rod 901 rotates clockwise around the axis to return to the initial state.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A counter linkage, characterized by: the counter linkage device (9) comprises a transmission connecting rod (901), the transmission connecting rod (901) can rotate around the center of a self shaft, one end of the transmission connecting rod (901) is linked with one end of a toggle connecting rod (902) in the rotating process, the toggle connecting rod (902) is installed on a positioning pin shaft (903) and can rotate around the positioning pin shaft (903), and the other end of the toggle connecting rod (902) is linked with a counter gear lever (904) to drive a counter digital meter (905) to perform action counting in the rotating process;

the toggle connecting rod (902) is connected with a reset torsion spring (906) which can enable the toggle connecting rod to rotate and reset so as to drive the transmission connecting rod (901) to rotate and reset.

2. A counter linkage according to claim 1, wherein: the transmission connecting rod (901) comprises an upper rod part (901a), the upper rod part (901a) is connected with one end of a rotating shaft part (901b), the other end of the rotating shaft part (901b) is connected with a tail rod part (901c), the tail rod part (901c) is linked with one end of the toggle connecting rod (902), and the transmission connecting rod (901) can rotate around the axis center of the rotating shaft part (901 b).

3. A counter linkage according to claim 1, wherein: the reset torsion spring (906) is arranged on the positioning pin shaft (903), one end of the reset torsion spring is hung on a pin (902a) extending out of the toggle connecting rod (902), and the other end of the reset torsion spring is propped against the shell (1).

4. A counter linkage according to claim 1, wherein: the transmission link (901) is mounted on the housing (1) with a rotation shaft portion (901 b).

5. A counter linkage according to claim 1, wherein: the positioning pin shaft (903) is installed on the shell (1).