CN218482180U - Electric switch operating device and circuit breaker - Google Patents

Abstract

The utility model relates to a low-voltage apparatus technical field especially relates to an electrical switch operating device and circuit breaker. The electric switch operating mechanism comprises a base, a handle, a moving contact and a static contact, wherein the moving contact and the static contact are arranged in the base; the lower end of the handle is rotatably arranged in the base, and the upper end of the handle penetrates out of the base; the moving contact is installed in the handle, and turning handle can drive the moving contact and rotate, makes moving contact and static contact or separation. The electric switch operating mechanism provided by the application cancels a link mechanism or a support between a handle and a moving contact, the moving contact is directly arranged on the handle, and the moving contact can be directly pushed to rotate by rotating the handle, so that the problem that the moving contact cannot rotate due to the fact that the link mechanism is easy to block in the prior art is solved, and the mechanism is safer and more reliable to use; moreover, the electric switch operating mechanism provided by the application also has the advantages of rapid reaction of the moving contact, small overall occupied space of the device, convenience in disassembly and assembly and the like.

Description

Electric switch operating mechanism and circuit breaker

Technical Field

The utility model belongs to the technical field of the low-voltage apparatus technique and specifically relates to an electrical switch operating device and circuit breaker are related to.

Background

A circuit breaker is a switching device for closing, carrying and breaking a current under normal or abnormal circuit conditions, and an operating mechanism of the circuit breaker is a main mechanical part of the circuit breaker that controls the on or off of a power supply circuit. The existing circuit breaker operating structure generally comprises a handle, a moving contact, a fixed contact and a link mechanism or a bracket which is connected between the handle and the moving contact and used for transmission; during operation, a worker rotates the handle, and then the moving contact is driven to rotate through the connecting rod mechanism or the support, so that the moving contact and the fixed contact are contacted or separated, and a power supply loop is connected or disconnected.

In the process of rotating a moving contact, the conventional electric switch operating mechanism is easy to have the problem that the moving contact cannot rotate continuously due to the fact that a connecting rod mechanism or a bracket is blocked, and the reliability of the breaking current of the circuit breaker is influenced; in addition, because the link mechanism or the bracket needs to occupy the internal space of the circuit breaker, the existing electric switch operating mechanism also has the problems of complex structure, large occupied space of the whole device and inconvenient assembly and disassembly.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide an electrical switch operating mechanism, this electrical switch operating mechanism can avoid the moving contact that exists among the prior art to lead to unable pivoted problem because of the link mechanism card is dead easily to, this electrical switch operating mechanism still has the moving contact reaction rapidly, the whole occupation space of device is little and easy dismounting's advantage.

In order to realize the purpose, the utility model adopts the following technical scheme:

an electrical switch operating mechanism comprises a base, a handle, a moving contact and a static contact, wherein the moving contact and the static contact are arranged in the base;

the lower end of the handle is rotatably arranged in the base, and the upper end of the handle penetrates out of the base;

the moving contact is arranged on the handle, and the moving contact can be driven to rotate by rotating the handle, so that the moving contact is contacted with or separated from the fixed contact.

Furthermore, the handle comprises a rotating shaft, and two ends of the rotating shaft are respectively connected to the base and the handle.

Furthermore, the device also comprises a first elastic element, wherein one end of the first elastic element is connected to the base, and the other end of the first elastic element is connected to the movable contact or the handle.

Furthermore, a first elastic piece connecting structure is arranged on the movable contact, a second elastic piece connecting structure is arranged on the inner wall surface of the base, and two ends of the first elastic piece are respectively connected to the first elastic piece connecting structure and the second elastic piece connecting structure;

the first elastic piece connecting structure and the second elastic piece connecting structure are respectively positioned on two sides of the rotating shaft; the center of the first elastic element connecting structure and the center of the second elastic element connecting structure are connected by a connecting line which is a comparison line, and the center of the rotating shaft can be positioned on the comparison line and can be positioned at two sides of the comparison line in the rotating process of the moving contact.

Furthermore, the first elastic piece is provided with a tension spring, the first elastic piece connecting structure is provided with a first connecting shaft, the second elastic piece connecting structure is provided with a second connecting shaft, and two ends of the tension spring are respectively hooked on the first connecting shaft and the second connecting shaft;

or, first elastic component sets up to the torsional spring, first elastic component connection structure sets up to first connecting hole, second elastic component connection structure sets up to the second connecting hole, two of the torsional spring are participated in respectively and are located first connecting hole with in the second connecting hole.

Furthermore, one end of the rotating shaft is connected to the base, and the other end of the rotating shaft is sequentially connected to the handle and the moving contact.

Furthermore, the moving contact can swing around the axis of the rotating shaft relative to the handle, so that impact force applied to the moving contact is buffered when the moving contact is in contact with the fixed contact.

Furthermore, a shifting structure is arranged on the handle, and the moving contact can be driven to rotate by rotating the handle.

Further, the toggle structure comprises a first boss and a second boss which are arranged on the handle, and the moving contact is arranged between the first boss and the second boss;

or, a moving contact placing groove is arranged on the handle, and the moving contact is inserted in the moving contact placing groove; the toggle structure comprises a first push surface and a second push surface which are positioned on two sides of the handle in the moving contact placing groove.

Further, the device also comprises a buffering elastic piece;

the two ends of the buffering elastic element respectively act on the base and the static contact so as to buffer the impact force on the static contact when the moving contact is contacted with the static contact.

Furthermore, a static contact is arranged at one end of the static contact, and the moving contact can rotate to be in contact with or separated from the static contact; the buffering elastic piece is set to be a compression spring or an elastic piece, and two ends of the compression spring or the elastic piece are respectively abutted to the end face, far away from the static contact, of the static contact and the base.

Furthermore, an arc-shaped sliding groove is formed in the inner wall surface of the base, a sliding shaft is arranged on the movable contact and inserted into the arc-shaped sliding groove, and the sliding shaft can slide in the arc-shaped sliding groove in the process of rotating the handle.

A second object of the utility model is to provide a circuit breaker, this circuit breaker can avoid the moving contact that exists among the prior art to lead to unable pivoted problem because of the link mechanism card is dead easily to, this circuit breaker still has moving contact reaction rapidly, small and easy dismounting's advantage.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a circuit breaker including an electrical switch operating mechanism as described above.

The device further comprises an outer shell, and a signal acquisition device, a signal processing device, a fault indicating device and an electronic circuit board which are arranged in the outer shell; the base is arranged in the outer shell, and the upper end of the handle penetrates out of the outer shell;

the signal acquisition device, the signal processing device and the fault indication device are connected to the electronic circuit board, the signal acquisition device is used for acquiring a fault signal of the circuit breaker and sending the fault signal to the signal processing device, the signal processing device processes the fault signal and sends a control instruction, and the fault indication device sends an alarm according to the control instruction.

The utility model has the advantages that:

the utility model provides an electrical switch operating mechanism and a circuit breaker, wherein the electrical switch operating mechanism comprises a base, a handle, a moving contact and a static contact which are arranged in the base; the lower end of the handle is rotatably arranged in the base, and the upper end of the handle penetrates out of the base; the moving contact is installed in the handle, and turning handle can drive the moving contact and rotate, makes moving contact and static contact or separation. Compared with the prior art, the electric switch operating mechanism provided by the application cancels a link mechanism or a support between a handle and a moving contact, and the moving contact is directly arranged on the handle, so that the moving contact can be directly pushed to rotate by rotating the handle, the problem that the moving contact cannot rotate due to the fact that the link mechanism is easy to block in the prior art is solved, the reliability of breaking current of the operating mechanism is improved, and the mechanism is safer and more reliable to use; moreover, the electric switch operating mechanism further has the advantages of rapid reaction of the moving contact, small overall occupied space of the device, convenience in disassembly and assembly and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic three-dimensional structure diagram of an electrical switch operating mechanism according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an internal structure of an electrical switch operating mechanism according to an embodiment of the present invention;

fig. 3 is a schematic view of a stressed state of the movable contact when the tension spring is in a first state of driving the movable contact to be away from the stationary contact in the electrical switch operating mechanism provided in the first embodiment of the present invention;

fig. 4 is a schematic view of a stressed state of the movable contact when the tension spring is in a dead point state of applying a vertical downward elastic force to the movable contact in the electrical switch operating mechanism according to the first embodiment of the present invention;

fig. 5 is a schematic view of a stressed state of the movable contact when the tension spring is in a second state of driving the movable contact to be close to the fixed contact in the electrical switch operating mechanism provided by the first embodiment of the present invention;

fig. 6 is a schematic view of a connection structure between a handle and a movable contact in an electrical switch operating mechanism according to an embodiment of the present invention;

fig. 7 is a schematic view of an internal structure of a second base in an electrical switch operating mechanism according to a first embodiment of the present invention;

fig. 8 is a schematic view of an internal structure of a first base in an electrical switch operating mechanism according to a first embodiment of the present invention;

fig. 9 is a schematic structural view of a position of a buffering elastic member in an electrical switch operating mechanism according to a first embodiment of the present invention;

fig. 10 is a schematic view of an internal structure of an electrical switch operating mechanism according to a second embodiment of the present invention;

fig. 11 is a schematic structural diagram of a torsion spring in an electrical switch operating mechanism according to a second embodiment of the present invention;

fig. 12 is a schematic view of an internal structure of an electrical switch operating mechanism according to a third embodiment of the present invention;

fig. 13 is a schematic structural view of a handle in an electrical switch operating mechanism according to a third embodiment of the present invention;

fig. 14 is a schematic diagram of a three-dimensional mechanism of a circuit breaker according to a fourth embodiment of the present invention;

fig. 15 is an internal schematic structural diagram of a circuit breaker according to the fourth embodiment of the present invention.

An icon:

11-a base; 111-a spindle placement groove; 112-a second connecting shaft; 113-a second connection hole; 114-arc chute; 115-handle limiting hole; 1151-a first stop surface; 1152-a second stop surface; 1153-a third limiting surface; 1154-a fourth limiting surface; 116-a first inner wall surface; 117 — second inner wall surface; 118-a static contact placing groove; 119-a static contact limiting table; 1110-moving contact limit table; 1111-a first base; 1112-a second base;

12-a handle; 121-a first shaft mounting hole; 1211 — a first through hole; 1212-a second via; 122 — a first boss; 123-a second boss; 124-moving contact placing grooves; 1241-a first pushing surface; 1242-a second pushing surface;

13-moving contact; 131-a first connecting shaft; 132-a first connection aperture; 133-a second shaft mounting hole; 134-sliding shaft; 135-third connection hole;

14-a static contact; 15-a rotating shaft; 151-limit boss; 16-a first elastic member; 161-pin; 17-a cushion spring;

2-an outer shell;

3-a signal acquisition device;

4-a signal processing device;

5-a fault indication device;

6-electronic circuit board.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It should be noted that, in the description of the present invention, the terms "connected" and "mounted" should be interpreted broadly, for example, they may be fixedly connected, detachably connected, or integrally connected; can be directly connected or connected through an intermediate medium; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example one

Referring to fig. 1 and 2, the first embodiment provides an electrical switch operating mechanism, which includes a base 11, a handle 12, and a movable contact 13 and a fixed contact 14 disposed in the base 11; the lower end of the handle 12 is rotatably arranged in the base 11, and the upper end of the handle 12 penetrates out of the base 11; the moving contact 13 is installed on the handle 12, and the rotating handle 12 can drive the moving contact 13 to rotate, so that the moving contact 13 is contacted with or separated from the static contact 14.

Taking the view angle shown in fig. 2 as an example, the handle 12 is rotated counterclockwise, the movable contact 13 is pushed by the handle 12 and contacts the stationary contact 14 after rotating a certain angle, the power supply circuit is connected, and the operating mechanism is switched on. When the circuit breaker breaks down or needs to break a circuit, the handle 12 is rotated clockwise, the handle 12 pushes the moving contact 13 to rotate, the moving contact 13 and the static contact 14 are separated, a power supply circuit is disconnected, and the operating mechanism is switched off. Compared with the prior art, the electric switch operating mechanism provided by the application cancels a link mechanism or a bracket between the handle 12 and the moving contact 13, and the moving contact 13 is directly arranged on the handle 12, so that the moving contact 13 can be directly pushed to rotate by rotating the handle 12, the problem that the moving contact 13 cannot rotate due to the fact that the link mechanism is easy to block in the prior art is solved, the reliability of breaking current of the operating mechanism is improved, and the mechanism is safer and more reliable to use; in addition, the electric switch operating mechanism further has the advantages that the moving contact 13 reacts quickly, the whole occupied space of the device is small, the dismounting and the mounting are convenient, and the like.

With reference to fig. 1, the base 11 includes a first base 1111 and a second base 1112 that are detachably connected, and the movable contact 13 and the fixed contact 14 are disposed in a cavity defined by the first base 1111 and the second base 1112. The upper end plate of the base 11 is provided with a handle limiting hole 115, in this embodiment, the upper end plate of the first base 1111 and the upper end plate of the second base 1112 are surrounded to form the handle limiting hole 115; the upper end of the handle 12 passes through the base 11 through the handle limiting hole 115.

Further, the handle limiting hole 115 has a first limiting surface 1151 and a second limiting surface 1152 which are oppositely disposed, the first limiting surface 1151 and the second limiting surface 1152 are perpendicular to the rotation axis of the handle 12 relative to the base 11, and the first limiting surface 1151 and the second limiting surface 1152 respectively abut against two sides of the handle 12, so that the handle 12 cannot move along the rotation axis of the handle 12.

Further, the handle stopper hole 115 has a third stopper surface 1153 and a fourth stopper surface 1154 which are disposed opposite to each other, and the upper end of the handle 12 can swing between the third stopper surface 1153 and the fourth stopper surface 1154. The third and fourth limiting surfaces 1153 and 1154 can limit the swing angle of the handle 12, and thus the swing angle of the movable contact 13.

Referring to fig. 2, the electric switch operating mechanism further includes a rotating shaft 15, and both ends of the rotating shaft 15 are connected to the base 11 and the handle 12, respectively.

In this embodiment, the inner wall surface of the base 11 is provided with a rotating shaft placing groove 111, the handle 12 is provided with a first rotating shaft mounting hole 121, one end of the rotating shaft 15 is inserted into the rotating shaft placing groove 111, the other end of the rotating shaft 15 penetrates through the first rotating shaft mounting hole 121, and the handle 12 can rotate relative to the base 11 around the rotating shaft 15 through the structure. In other embodiments, the rotating shaft 15 may also be configured such that one end is fixedly disposed on the base 11 (or the handle 12), and the other end is rotatably connected with the handle 12 (or the base 11); alternatively, a raised structure may be provided on the base 11 (or the handle 12), and a groove may be provided on the handle 12 (or the base 11) to mate with the raised structure, so that the handle 12 can rotate relative to the base 11 about the raised structure. The above-described structure is within the scope of the present application.

Further, the electrical switch operating mechanism further includes a first elastic member 16, one end of the first elastic member 16 is connected to the base 11, and the other end of the first elastic member 16 is connected to the movable contact 13 or the handle 12, so as to directly apply a force to the movable contact 13 or indirectly apply a force to the movable contact 13 through the handle 12.

The first elastic element 16 may apply an elastic force to the movable contact 13 to drive the movable contact 13 to approach the stationary contact 14, or may apply an elastic force to the movable contact 13 to drive the movable contact 13 to move away from the stationary contact 14.

Referring to fig. 3 to 5, in the present embodiment, the movable contact 13 is provided with a first elastic member connecting structure, the inner wall surface of the base 11 is provided with a second elastic member connecting structure, and two ends of the first elastic member 16 are respectively connected to the first elastic member connecting structure and the second elastic member connecting structure. The first elastic piece connecting structure and the second elastic piece connecting structure are respectively positioned at two sides of the rotating shaft 15; the line connecting the center of the first elastic member connection structure and the center of the second elastic member connection structure is a comparison line, and the center of the rotating shaft 15 can be located on the comparison line and can be located on both sides of the comparison line in the rotating process of the movable contact 13.

As an alternative embodiment, the first elastic element 16 is configured as a tension spring, the first elastic element connecting structure is configured as a first connecting shaft 131, the second elastic element connecting structure is configured as a second connecting shaft 112, and two ends of the tension spring are hooked on the first connecting shaft 131 and the second connecting shaft 112, respectively.

The operation of the first elastic member 16 provided in the present embodiment will be explained in detail.

The extension spring that this embodiment provided has three kinds of states at the moving contact 13 in-process of rotating, is respectively: a first state in which the first elastic element 16 drives the movable contact 13 away from the fixed contact 14; the dead point state of the elastic force exerted by the first elastic element 16 on the movable contact 13 vertically downward; the first elastic element 16 drives the movable contact 13 to approach the second state of the fixed contact 14.

Fig. 3 is a schematic view of a stressed state of the movable contact 13 when the tension spring is in the first state in the process of rotating the movable contact 13. Referring to fig. 3, in this state, the tension direction of the tension spring (i.e., the direction in which the center of the first connecting shaft 131 is directed toward the center of the second connecting shaft 112) is on the right side of the line connecting the center of the rotating shaft 15 and the second connecting shaft 112; under the action of the tension spring, the movable contact 13 tends to rotate clockwise, so that the handle 12 also tends to rotate clockwise, until the handle 12 is reversely propped against the base 11, the handle 12 keeps not acting, therefore, the movable contact 13 does not act, and the mechanism is in a stable opening state.

Fig. 4 is a schematic view of the stressed state of the movable contact 13 when the tension spring is in a dead point state in the rotation process of the movable contact 13. Referring to fig. 4, in this state, a line connecting centers of the first connecting shaft 131 and the second connecting shaft 112 (i.e., the reference line described above) is parallel to the vertical direction, and a center of the rotating shaft 15 is located on the line connecting centers of the first connecting shaft 131 and the second connecting shaft 112; at this time, the tension spring is in a state of being stretched longest in the whole movement process, and the direction of the tension force of the tension spring on the movable contact 13 is vertically downward.

Fig. 5 is a schematic view of a stressed state of the movable contact 13 when the tension spring is in the second state in the process of rotating the movable contact 13. Referring to fig. 5, in this state, the tension direction of the tension spring (i.e., the direction in which the center of the first connecting shaft 131 is directed toward the center of the second connecting shaft 112) is on the left side of the line connecting the rotating shaft 15 and the center of the second connecting shaft 112; under the action of the tension spring, the moving contact 13 tends to rotate anticlockwise, so that the handle 12 also tends to rotate anticlockwise; at this time, the external force applied to the handle 12 is cancelled (or not cancelled), the movable contact 13 automatically and rapidly rotates in the counterclockwise direction under the action of the tension spring until the movable contact is contacted with the fixed contact 14, and the mechanism is in a stable closing state.

When the mechanism is changed from a closing state to an opening state, the handle 12 is rotated clockwise, so that the movable contact 13 rotates clockwise, the movable contact and the static contact are separated, and the mechanism is opened; when the movable contact 13 rotates past the dead point of the first elastic element 16, the external force applied to the handle 12 is cancelled (or not cancelled), and the movable contact 13 automatically and rapidly rotates clockwise to return to the stable open state under the action of the tension spring.

This application is through setting up first elastic component 16 for moving contact 13 can be in stable separating brake or combined floodgate state under the elastic force effect of first elastic component 16, the security performance of hoist mechanism when using.

Referring to fig. 6, one end of the rotating shaft 15 is connected to the base 11, and the other end of the rotating shaft 15 is connected to the handle 12 and the movable contact 13 in turn. Specifically, the movable contact 13 is provided with a second rotating shaft mounting hole 133, one end of the rotating shaft 15 is inserted into the rotating shaft placing groove 111, and the other end of the rotating shaft 15 sequentially passes through the first rotating shaft mounting hole 121 and the second rotating shaft mounting hole 133 along a direction away from the rotating shaft placing groove 111.

On the basis of the structure, the movable contact 13 can swing around the axis of the rotating shaft 15 relative to the handle 12, so that impact force applied to the movable contact 13 is buffered when the movable contact 13 is in contact with the static contact 14. Referring to the view shown in fig. 5, when the movable contact 13 rotates counterclockwise to be rapidly contacted with the fixed contact 14, the movable contact 13 can swing clockwise by a small angle around the axis of the rotating shaft 15 relative to the handle 12, and returns to the state of being contacted with the fixed contact 14 under the action of the tension spring, so that the impact force exerted on the movable contact 13 is buffered, the impact force generated when the movable contact 13 is contacted with the fixed contact 14 is relieved, the movable contact 13 or the fixed contact 14 is prevented from being damaged due to the impact between the movable contact 13 and the fixed contact 14, and the safety and the service life of the mechanism are improved.

Further, a shifting structure is arranged on the handle 12, and the moving contact 13 can be driven to rotate by rotating the handle 12.

In this embodiment, the toggle structure includes a first boss 122 and a second boss 123 disposed on the handle 12, and the movable contact 13 is disposed between the first boss 122 and the second boss 123. When the operating mechanism is in a stable opening state, the moving contact 13 abuts against the second boss 123 under the action of the tension spring; in the process that the operating mechanism is changed from the stable opening state to the closing state, the handle 12 is rotated, the moving contact 13 rotates through the dead point state of the tension spring under the pushing of the second boss 123, and at the moment, the moving contact 13 abuts against the first boss 122 under the pulling force of the tension spring; when the external force applied to the handle 12 is removed (or not removed), the movable contact 13 automatically and rapidly rotates to be in contact with the fixed contact 14 under the action of the tension spring.

Alternatively, the handle 12 in this embodiment is formed by directly forming the first boss 122 and the second boss 123. In other embodiments, the first boss 122 and the second boss 123 may be removably attached to the handle 12; illustratively, two insertion holes are provided on the handle 12, and the first boss 122 and the second boss 123 are respectively inserted into the two insertion holes on the handle 12. In addition, the first boss 122 and the second boss 123 may be connected to the handle 12 by a screw connection.

In this embodiment, the upper end of the handle 12 can swing between the first boss 122 and the second boss 123, so as to buffer the impact force applied to the movable contact 13 when the movable contact 13 contacts the stationary contact 14.

It is understood that in other embodiments, the handle 12 may be disposed between the first boss 122 and the second boss 123, and two opposite side surfaces of the handle 12 are respectively abutted against the first boss 122 and the second boss 123; in this structure, the movable contact 13 can be rotated by rotating the handle 12, the first boss 122 and the second boss 123. In addition, in the present embodiment, the movable contact 13 is mounted on the handle 12 through the rotating shaft 15, the first boss 122 and the second boss 123; in other embodiments, the handle 12 and the movable contact 13 may be configured to be fixedly connected, for example, the two are fixed by a screw or integrally formed, and the movable contact 13 can be installed on the handle 12, and the movable contact 13 can be driven to rotate by rotating the handle 12, which is also within the protection scope of the present application. However, in the above-described configuration, the movable contact 13 cannot swing with respect to the handle 12, and does not have an effect of buffering an impact force applied to the movable contact 13.

With continued reference to FIG. 6, the first shaft mounting hole 121 includes a first through hole 1211 and a second through hole 1212 communicating with each other, and the diameter of the second through hole 1212 is larger than the diameter of the first through hole 1211; the peripheral portion of the rotating shaft 15 is annularly provided with a limiting boss 151, the limiting boss 151 is disposed in the second through hole 1212, and two ends of the limiting boss 151 respectively abut against the movable contact 13 and the connection surfaces of the first through hole 1211 and the second through hole 1212. With the above arrangement, the rotation shaft 15 can be restricted from moving in its own axial direction. In other embodiments, the two ends of the limiting projection 151 may also be connected to the inner wall surface of the base 11 and the connection surfaces of the first through hole 1211 and the second through hole 1212, and this structure can also limit the movement of the rotating shaft 15 along its own axial direction, which is different from the connection sequence of the first through hole 1211 and the second through hole 1212 with respect to the movable contact 13.

Referring to fig. 6 and 7, the arc-shaped sliding slot 114 is disposed on the inner wall surface of the base 11, the sliding shaft 134 is disposed on the handle 12, the sliding shaft 134 is inserted into the arc-shaped sliding slot 114, and the sliding shaft 134 can slide in the arc-shaped sliding slot 114 in the process of rotating the handle 12, so as to improve the stability of the movable contact 13 in the rotating process.

In order to simplify the device structure, in the present embodiment, the first connecting shaft 131 and the sliding shaft 134 are the same piece. One end of the first connecting shaft 131 (sliding shaft 134) is inserted into the third connecting hole 135 of the movable contact 13, the other end of the first connecting shaft 131 (sliding shaft 134) is inserted into the arc-shaped sliding slot 114, and two axial end surfaces of the first connecting shaft 131 (sliding shaft 134) are respectively abutted against the bottom surfaces of the handle 12 and the arc-shaped sliding slot 114. Analyzing the above structure, the first elastic element 16 is disposed between the movable contact 13 and the inner wall surface of the base 11 on which the arc-shaped sliding slot 114 is disposed, and one end of the first elastic element 16 is hooked to the first connecting shaft 131 (sliding shaft 134); both end surfaces of the first connecting shaft 131 (sliding shaft 134) abut against the handle 12 and the groove bottom surface of the arc chute 114, respectively, thereby restricting displacement of the first connecting shaft 131 (sliding shaft 134) in its own axial direction.

Referring to fig. 7 and 8, the base 11 has a first inner wall surface 116 and a second inner wall surface 117 that are opposite to each other, a static contact placing groove 118 is disposed on the first inner wall surface 116, a static contact limiting table 119 is disposed on the second inner wall surface 117, the static contact 14 is disposed in the static contact placing groove 118, and the static contact 14 is clamped between a groove bottom surface of the static contact placing groove 118 and the static contact limiting table 119, so that the static contact 14 is limited from moving in a direction perpendicular to the first inner wall surface 116 and the second inner wall surface 117.

In this embodiment, the rotating shaft placing groove 111 is disposed on the first inner wall surface 116, the handle 12 is rotatably connected to the first inner wall surface 116, the movable contact limiting table 1110 is disposed on the second inner wall surface 117, and the movable contact 13 is clamped between the handle 12 and the movable contact limiting table 1110, so as to limit the movable contact 13 from moving in a direction perpendicular to the first inner wall surface 116 and the second inner wall surface 117.

In this embodiment, the first inner wall surface 116 is disposed on the first base 1111, and the second inner wall surface 117 is disposed on the second base 1112.

Alternatively, one end of the second connecting shaft 112 is inserted into the connecting shaft insertion slot on the first inner wall surface 116, and two ends of the second connecting shaft 112 abut against the slot bottom surface of the connecting shaft insertion slot and the second inner wall surface 117, respectively, so as to limit the relative position of the second connecting shaft 112 and the base 11.

Referring to fig. 9, the electric switch operating mechanism provided in the present application further includes a buffer elastic member 17; two ends of the buffering elastic element 17 respectively act on the base 11 and the static contact 14 to buffer the impact force applied to the static contact 14 when the movable contact 13 is in contact with the static contact 14.

As an alternative embodiment, one end of the static contact 14 is provided with a static contact, and the movable contact 13 can rotate to be in contact with or separated from the static contact; the buffering elastic member 17 is a compression spring or an elastic sheet, and two ends of the compression spring or the elastic sheet respectively abut against the end surface of the static contact 14 far away from the static contact and the base 11. In this embodiment, the static contact 14 and the compression spring or the elastic sheet are both disposed in the static contact placing groove 118, and both ends of the compression spring or the elastic sheet respectively abut against an end surface of the static contact 14 far away from the static contact and a side wall surface of the static contact placing groove 118 far away from the static contact; the compression spring or the elastic sheet cannot be separated from the static contact placing groove 118 under the limiting action of the second inner wall surface 117 of the base 11.

In the process of switching from the opening state to the closing state, when the moving contact 13 rotates counterclockwise to be rapidly contacted with the static contact 14, the static contact 14 can move in the direction away from the moving contact 13, and returns to the state of being contacted with the moving contact 13 under the action of the elastic force of the compression spring or the elastic sheet; meanwhile, the movable contact 13 can swing clockwise by a small angle around the axis of the rotating shaft 15 relative to the handle 12, and returns to a state of contacting with the static contact 14 under the action of the tension spring; through the flexible contact between the moving contact 13 and the static contact 14, the impact force applied to the moving contact 13 and the static contact 14 can be simultaneously relieved, the moving contact 13 or the static contact 14 is prevented from being damaged due to the impact between the moving contact 13 and the static contact 14 to the maximum extent, and the safety of the mechanism is further improved and the service life of the mechanism is further prolonged.

When the electrical switch operating mechanism provided in this embodiment is installed, first, one end of the rotating shaft 15 passes through the first rotating shaft installation hole 121 on the handle 12 and is inserted into the rotating shaft placing groove 111 on the first inner wall surface 116, and the other end of the rotating shaft 15 is inserted into the second rotating shaft installation hole 133 on the movable contact 13 to push the movable contact 13, so that the two ends of the limiting boss 151 on the rotating shaft 15 respectively abut against the movable contact 13 and the connection surfaces of the first through hole 1211 and the second through hole 1212; then, one end of the first connecting shaft 131 (sliding shaft 134) is inserted into the third connecting hole 135 on the movable contact 13, one end of the second connecting shaft 112 is inserted into the connecting shaft slot on the first inner wall surface 116, the static contact 14 and the buffer elastic member 17 are placed in the static contact placing slot 118 on the first inner wall surface 116, and two ends of the first elastic member 16 are respectively connected to the first connecting shaft 131 (sliding shaft 134) and the second connecting shaft 112; finally, the arc-shaped sliding groove 114, the fixed contact limiting table 119 and the movable contact limiting table 1110 on the second inner wall surface 117 are respectively in one-to-one correspondence with the first connecting shaft 131 (sliding shaft 134), the fixed contact 14 and the movable contact 13, and then the first base 1111 and the second base 1112 are fixedly connected, so that the installation of the mechanism can be completed.

After the installation, the handle 12, the movable contact 13, the fixed contact 14, the rotating shaft 15 and the elastic buffer member 17 are clamped by the first inner wall surface 116 and the second inner wall surface 117 of the base 11, and do not move in a direction perpendicular to the first inner wall surface 116 and the second inner wall surface 117. The whole installation process of the inside of the base 11 does not need fixing parts (such as screws) for auxiliary fixation, and the dismounting is convenient and fast.

Example two

This embodiment provides an electrical switch operating mechanism having substantially the same structure as the electrical switch operating mechanism described in the first embodiment, except that: the first elastic member 16 is different in structure.

Referring to fig. 10 and 11, in the present embodiment, the first elastic member 16 is configured as a torsion spring, the first elastic member connection structure is configured as a first connection hole 132, the second elastic member connection structure is configured as a second connection hole 113, and two pins 161 of the torsion spring are respectively inserted into the first connection hole 132 and the second connection hole 113.

Specifically, a torsion spring mounting boss is convexly arranged on the first inner wall surface 116, an end surface of the torsion spring mounting boss far away from the first inner wall surface 116 abuts against the second inner wall surface 117, and a central hole of the torsion spring is sleeved on the torsion spring mounting boss, so that the torsion spring is fixed on the base 11.

After the operation mechanism in this embodiment is installed, the torsion spring always provides a compressive force, i.e. the elastic force direction is the direction in which the center of the first connection hole 132 points to the center of the second connection hole 113. The working principle of the torsion spring is the same as that of the tension spring in the first embodiment, and the description is omitted here.

The remaining structure provided in this embodiment is the same as that in the first embodiment, and is not described herein again.

EXAMPLE III

This embodiment provides an electrical switch operating mechanism having substantially the same structure as the electrical switch operating mechanism described in the first embodiment, except that: the scheme of the toggle structure is different.

Referring to fig. 12 and 13, in the present embodiment, a movable contact placing groove 124 is provided on the handle 12, and the movable contact 13 is inserted into the movable contact placing groove 124; the toggle structure includes a first push surface 1241 and a second push surface 1242 located at two sides of the handle 12 in the movable contact placement slot 124.

Optionally, a gap is formed between the side wall surface of the movable contact placing groove 124 and the movable contact 13, so that the movable contact 13 can swing relative to the handle 12 around the axis of the rotating shaft 15, thereby buffering an impact force applied to the movable contact 13 when the movable contact 13 is in contact with the fixed contact 14.

In other embodiments, the side wall surface of the movable contact placing groove 124 may also be in close contact with the movable contact 13, and in this structure, the movable contact 13 can rotate synchronously with the handle 12.

The remaining structures provided in this embodiment are the same as those in the first embodiment, and are not described herein again. It is understood that the structure of the handle 12 in the second embodiment may also be configured as the structure in the present embodiment.

Example four

The present embodiment provides a circuit breaker, including the electrical switch operating mechanism as described above, and therefore, the technical advantages and effects achieved by the circuit breaker include the technical advantages and effects achieved by the electrical switch operating mechanism described above, which are not described herein again.

Referring to fig. 14 and 15, the circuit breaker provided by the present application further includes an outer casing 2, and a signal acquisition device 3, a signal processing device 4, a fault indication device 5, and an electronic circuit board 6 disposed in the outer casing 2; the base 11 is arranged in the outer shell 2, and the upper end of the handle 12 penetrates out of the outer shell 2; the signal acquisition device 3, the signal processing device 4 and the fault indication device 5 are connected to the electronic circuit board 6, the signal acquisition device 3 is used for acquiring fault signals of the circuit breaker and sending the fault signals to the signal processing device 4, the signal processing device 4 processes the fault signals and sends out control instructions, and the fault indication device 5 sends out an alarm according to the control instructions.

Alternatively, the fault indicating device 5 includes a safety status indicating lamp and a fault status indicating lamp, which have different light colors, the light color of the safety status indicating lamp may be green, and the light color of the fault status indicating lamp may be red. When the circuit breaker works normally, the safety state indicator lamp is on, and the fault state indicator lamp is not on; when the circuit breaker breaks down, the fault state indicator lamp is on, and the safety state indicator lamp is not on, reminds the staff to overhaul. The fault indicating device 5 can also comprise an alarm, when the circuit breaker breaks down, the alarm gives out warning sound, and the fault state indicating lamp is matched to remind a worker of overhauling from the two aspects of vision and hearing.

When the worker finds the action of the fault indicator 5 and carries out maintenance, the worker firstly dials the handle 12 in the electric switch operating mechanism to separate the moving contact 13 from the static contact 14, and the outgoing line in the power supply loop is disconnected at a large distance, so that the worker can be ensured to be free from worry about the maintenance; after the maintenance is finished, the handle 12 in the electric switch operating mechanism is shifted again, so that the movable contact 13 is contacted with the fixed contact 14, the power supply loop is switched on, and the product can start to work again.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (15)

1. An electric switch operating mechanism is characterized by comprising a base (11), a handle (12), a movable contact (13) and a fixed contact (14) which are arranged in the base (11);

the lower end of the handle (12) is rotatably arranged in the base (11), and the upper end of the handle (12) penetrates out of the base (11);

the moving contact (13) is arranged on the handle (12), and the moving contact (13) can be driven to rotate by rotating the handle (12), so that the moving contact (13) is contacted with or separated from the static contact (14).

2. The electrical switch operating mechanism of claim 1, further comprising a shaft (15), wherein both ends of the shaft (15) are connected to the base (11) and the handle (12), respectively.

3. The electrical switch operating mechanism according to claim 2, further comprising a first elastic member (16), wherein one end of the first elastic member (16) is connected to the base (11), and the other end of the first elastic member (16) is connected to the movable contact (13) or the handle (12).

4. The electrical switch operating mechanism according to claim 3, wherein the movable contact (13) is provided with a first elastic member connecting structure, the inner wall surface of the base (11) is provided with a second elastic member connecting structure, and two ends of the first elastic member (16) are respectively connected to the first elastic member connecting structure and the second elastic member connecting structure;

the first elastic piece connecting structure and the second elastic piece connecting structure are respectively positioned on two sides of the rotating shaft (15); the connecting line of the center of the first elastic element connecting structure and the center of the second elastic element connecting structure is a comparison line, and the center of the rotating shaft (15) can be positioned on the comparison line and can be positioned at two sides of the comparison line in the rotating process of the movable contact (13).

5. The electrical switch operating mechanism according to claim 4, wherein the first elastic member (16) is provided as a tension spring, the first elastic member connecting structure is provided as a first connecting shaft (131), the second elastic member connecting structure is provided as a second connecting shaft (112), and two ends of the tension spring are respectively hooked on the first connecting shaft (131) and the second connecting shaft (112);

or, first elastic component (16) set up to the torsional spring, first elastic component connection structure sets up to first connecting hole (132), second elastic component connection structure sets up to second connecting hole (113), two of the torsional spring are participated in (161) and are inserted respectively and locate first connecting hole (132) with in the second connecting hole (113).

6. An electric switch operating mechanism as claimed in claim 3, characterized in that one end of said rotary shaft (15) is connected to said base (11), and the other end of said rotary shaft (15) is connected in turn to said handle (12) and to said movable contact (13).

7. The electrical switch operating mechanism according to claim 6, wherein the movable contact (13) is capable of swinging relative to the handle (12) about the axis of the rotating shaft (15) to cushion the impact force on the movable contact (13) when the movable contact (13) contacts the stationary contact (14).

8. The electrical switch operating mechanism according to claim 1, wherein a toggle structure is provided on the handle (12), and rotation of the handle (12) causes the toggle structure to rotate the movable contact (13).

9. The electrical switch operating mechanism of claim 8, wherein the toggle structure comprises a first boss (122) and a second boss (123) disposed on the handle (12), the movable contact (13) being disposed between the first boss (122) and the second boss (123);

or, a moving contact placing groove (124) is arranged on the handle (12), and the moving contact (13) is inserted into the moving contact placing groove (124); the toggle structure comprises a first push surface (1241) and a second push surface (1242) which are positioned on two sides of the handle (12) in the movable contact placing groove (124).

10. The electrical switch operating mechanism according to claim 1, further comprising a cushion elastic member (17);

two ends of the buffering elastic piece (17) respectively act on the base (11) and the static contact (14) so as to buffer the impact force borne by the static contact (14) when the moving contact (13) is in contact with the static contact (14).

11. The electrical switch operating mechanism according to claim 10, wherein one end of the fixed contact (14) is provided with a fixed contact, and the movable contact (13) is capable of rotating to be in contact with or separated from the fixed contact; the buffering elastic piece (17) is set to be a compression spring or an elastic piece, and two ends of the compression spring or the elastic piece are respectively abutted to the end face, far away from the static contact, of the static contact (14) and the base (11).

12. The electrical switch operating mechanism of claim 1, wherein an arc-shaped sliding slot (114) is formed on an inner wall surface of the base (11), a sliding shaft (134) is arranged on the movable contact (13), the sliding shaft (134) is inserted into the arc-shaped sliding slot (114), and the sliding shaft (134) can slide in the arc-shaped sliding slot (114) in the process of rotating the handle (12).

13. The electrical switch operating mechanism of claim 1, wherein the base (11) has a first inner wall surface (116) and a second inner wall surface (117) that are opposite to each other, the first inner wall surface (116) is provided with a static contact placing groove (118), the second inner wall surface (117) is provided with a static contact limiting table (119), the static contact (14) is arranged in the static contact placing groove (118), and the static contact (14) is clamped between a groove bottom surface of the static contact placing groove (118) and the static contact limiting table (119).

14. A circuit breaker including an electrical switch operating mechanism according to any one of claims 1 to 13.

15. The circuit breaker according to claim 14, characterized by further comprising an outer casing (2), and a signal acquisition device (3), a signal processing device (4), a fault indication device (5) and an electronic circuit board (6) arranged inside the outer casing (2); the base (11) is arranged in the outer shell (2), and the upper end of the handle (12) penetrates out of the outer shell (2);

the circuit breaker fault alarm device is characterized in that the signal acquisition device (3), the signal processing device (4) and the fault indicating device (5) are connected to the electronic circuit board (6), the signal acquisition device (3) is used for acquiring a fault signal of the circuit breaker and sending the fault signal to the signal processing device (4), the signal processing device (4) processes the fault signal and sends a control instruction, and the fault indicating device (5) sends an alarm according to the control instruction.

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