Electric operating mechanism and circuit breaker

Abstract

The utility model relates to an electric operating mechanism and a circuit breaker. The driving part is mounted on the mounting seat; the gear assembly is connected with the driving part and is provided with a final-stage gear; the connecting rod rocker arm assembly comprises a connecting rod, one end of the connecting rod is hinged to the last-stage gear, and the hinge point is not collinear with the rotating axis of the last-stage gear; one end of the rocker arm is hinged with the mounting seat, the middle part of the rocker arm is hinged with the other end of the connecting rod, and one end of the rocker arm, which is not hinged with the mounting seat, forms a matching part matched with an operating handle of the circuit breaker; and the driving piece can drive the operation handle to move through the gear assembly and the connecting rod rocker arm assembly, so that the circuit breaker is switched on or switched off.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to an electric operating mechanism and a circuit breaker. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect current under normal circuit conditions and can close, carry and disconnect current under abnormal circuit conditions within a specified time. Circuit breakers are often equipped with electric operating mechanisms, which can replace manual operation and can remotely control the closing or opening of circuit breakers without the need for personnel to arrive at the site.

[0003] In the prior art, the electric operating mechanism uses a slider to reciprocate on a slide rail to push an operating handle to realize the opening and closing operation of the circuit breaker, thereby realizing the electric operation function. The existing electric operating mechanism has the following problems: the slider reciprocates relative to the slide rail to push the operating handle to realize the opening and closing of the circuit breaker, and the swing range of the operating handle is limited by the sliding position of the slider relative to the slide rail. The electric operating mechanism can only meet the swing range requirements of the operating handle under the premise of a large size. The large size of the electric operating mechanism leads to a circuit breaker with a non-compact structure and a large size. Utility Model Content

[0004] Based on this, in order to solve the above problems, an electric operating mechanism and a circuit breaker are provided. The electric operating mechanism can meet the swing range requirements of the operating handle under the premise of small size, so that the structure of the circuit breaker is compact and the volume of the circuit breaker is reduced.

[0005] An electric operating mechanism, used for a circuit breaker, comprising:

[0006] Mounting seat;

[0007] A driving member, mounted on the mounting seat;

[0008] a gear assembly connected to the driving member and having a final gear;

[0009] Linkage rocker arm assembly, including:

[0010] A connecting rod, one end of which is hinged to the final gear, and the hinge point is not colinear with the rotation axis around which the final gear rotates;

[0011] A rocker arm, one end of which is hinged to the mounting base, and the middle part of which is hinged to the other end of the connecting rod, and the end of the rocker arm that is not hinged to the mounting base forms a mating portion for mating with the operating handle of the circuit breaker; the driving member can drive the operating handle to move through the gear assembly and the connecting rod rocker arm assembly, so that the circuit breaker is closed or opened.

[0012] In one embodiment, the gear assembly includes a first driving gear and a multi-stage driven gear, the first driving gear is connected to the driving member, and the driving member is used to drive the first driving gear to rotate around a first axis;

[0013] The first-stage driven gear is meshed with the first driving gear, and each two adjacent stages of the driven gears are meshed with each other; the first driving gear can drive all the driven gears to rotate around a second axis, the second axis is parallel to the height direction of the circuit breaker, and the first axis is perpendicular to the second axis;

[0014] The final driven gear forms the final gear of the gear assembly.

[0015] In one embodiment, the electric operating mechanism further comprises:

[0016] A handle shaft and a second driving gear, wherein the second driving gear is coaxially mounted on the handle shaft, and the second driving gear is meshed with the final driven gear;

[0017] The handle shaft can drive the second driving gear to rotate around a third axis, and the third axis is parallel to the second axis;

[0018] Operating the handle shaft can drive the operating handle to move through the second driving gear, the final driven gear and the connecting rod rocker arm assembly, so that the circuit breaker is closed or opened.

[0019] In one embodiment, the mounting seat includes two mounting plates, and the two mounting plates are arranged at intervals in the extension direction of the second axis; the two mounting plates are respectively a first mounting plate and a second mounting plate;

[0020] The first driving gear is located between the first mounting plate and the second mounting plate, part of the driven gear is located on the side of the first mounting plate facing away from the second mounting plate, part of the driven gear is passed through the first mounting plate to between the first mounting plate and the second mounting plate via the side of the first mounting plate facing away from the second mounting plate, part of the driven gear is located between the first mounting plate and the second mounting plate, and the remaining part of the driven gear is passed through the side of the second mounting plate facing the first mounting plate to the other side of the second mounting plate;

[0021] The second driving gear is located on a side of the second mounting plate facing away from the first mounting plate.

[0022] In one embodiment, the driven gear includes a first primary driven gear, a first driven gear, a second driven gear, a third driven gear, a fourth driven gear and a first final driven gear meshed in sequence;

[0023] The first primary driven gear and the first driven gear are located on a side of the first mounting plate facing away from the second mounting plate, the second driven gear is passed through the first mounting plate to between the first mounting plate and the second mounting plate via the side of the first mounting plate facing away from the second mounting plate, the third driven gear and the fourth driven gear are located between the first mounting plate and the second mounting plate, and the first final driven gear is passed through the second mounting plate from one side of the second mounting plate facing the first mounting plate to the other side.

[0024] In one embodiment, the mounting seat includes three mounting plates, and the three mounting plates are arranged at intervals in the extension direction of the second axis; the three mounting plates are respectively a third mounting plate, a fourth mounting plate and a fifth mounting plate which are arranged at intervals in sequence;

[0025] The first driving gear and part of the driven gear are located between the third mounting plate and the fourth mounting plate, part of the driven gear is located between the third mounting plate and the fourth mounting plate, the remaining part is arranged between the fourth mounting plate and the fifth mounting plate, and the remaining part of the driven gear and the second driving gear are located between the fourth mounting plate and the fifth mounting plate.

[0026] In one embodiment, the electric operating mechanism includes a second primary driven gear, a fifth driven gear, a sixth driven gear, a seventh driven gear and a second final driven gear meshed in sequence;

[0027] The second first-stage driven gear, the fifth driven gear and the sixth driven gear are located between the third mounting plate and the fourth mounting plate, a portion of the seventh driven gear is located between the third mounting plate and the fourth mounting plate, and the remaining portion is located between the fourth mounting plate and the fifth mounting plate, and the second final-stage driven gear is located between the fourth mounting plate and the fifth mounting plate.

[0028] In one embodiment, the final driven gear includes a first wheel and a second wheel sleeved on the same mounting shaft, the first wheel meshes with the previous driven gear, and the second wheel meshes with the second driving gear; the connecting rod rocker arm assembly is connected to the second wheel or the mounting shaft; the mounting shaft is fixedly arranged with the second wheel;

[0029] A limit stop assembly is provided between the first wheel and the mounting shaft. When the first wheel rotates forward, the limit stop assembly can drive the mounting shaft and the second wheel to rotate synchronously. When the second driving gear drives the second wheel and the mounting shaft to rotate forward, the first wheel does not rotate synchronously with the second wheel under the action of the limit stop assembly.

[0030] In one embodiment, the position-limiting and anti-return assembly includes a locking column and an elastic member, the mounting shaft is provided with a mounting hole in the radial direction, the locking column and the elastic member are both located in the mounting hole, and the elastic member is located between the locking column and the mounting shaft;

[0031] A step portion is provided on the first wheel. When the first wheel rotates forward, the locking column can cooperate with the step portion, and the first wheel can drive the installation shaft and the second wheel to rotate; when the second wheel drives the installation shaft to rotate forward, the locking column does not contact the step portion, and the installation shaft idles relative to the first wheel.

[0032] In one embodiment, the electric operating mechanism further comprises:

[0033] A connecting disk, which is a fan-shaped disk provided on the end surface of the second wheel facing away from the first wheel and connected to the mounting shaft, and the connecting rod is hinged to the final gear through the connecting disk; or

[0034] The connecting disk is a circular disk, and the connecting disk is connected to the installation shaft. The diameter of the connecting disk is larger than the diameter of the installation shaft. The connecting rod is hinged to the final gear through the connecting disk.

[0035] A circuit breaker comprises a body, an operating handle and the above-mentioned electric operating mechanism, wherein the operating handle and the electric operating mechanism are both mounted on the body.

[0036] In one embodiment, the circuit breaker further includes an inner shell and a control panel:

[0037] In the height direction of the circuit breaker, the electric operating mechanism, the inner shell and the control panel are sequentially installed above the body, and the operating handle extends into the inner shell; the control panel is used to control the electric operating mechanism;

[0038] An indicator, mounted on the inner shell;

[0039] A reset member, disposed between the body and the indicator member;

[0040] When the connecting rod rocker arm assembly of the electric operating mechanism drives the operating handle to move relative to the main body to close the switch, the connecting rod rocker arm assembly and / or the operating handle can push the indicator to move relative to the main body, the reset member stores energy, and the indicator shows closed; when the connecting rod rocker arm assembly drives the operating handle to move relative to the main body to open the switch, the indicator is released, the indicator is reset under the action of the reset member, and the indicator shows open.

[0041] In one embodiment, the control panel is located on the upper side of the operating handle, and the indicator includes a driving part and an indicating part;

[0042] In the width direction of the circuit breaker, the driving portion is located on one side of the operating handle, the gear assembly is located on the other side of the operating handle, and the indicating portion is located on an upper side of the control panel.

[0043] In one of the embodiments, in the width direction of the circuit breaker, the gear assembly is located on one side of the operating handle, and in the length direction of the circuit breaker, the driving member is located on one side of the operating handle.

[0044] The electric operating mechanism and circuit breaker described above, because the electric operating mechanism includes a connecting rod rocker arm assembly, the connecting rod rocker arm assembly can enlarge the swing stroke, and under the premise of the connecting rod rocker arm assembly having a small size, it can meet the swing range requirements of the operating handle, thereby improving the structural compactness of the entire electric operating mechanism, that is, improving the structural compactness of the circuit breaker and reducing the volume of the circuit breaker. In addition, because the hinge point where the connecting rod is hinged to the final gear is not colinear with the rotation axis of the final gear, the connecting rod rocker arm assembly can further enlarge the swing stroke and further reduce the volume of the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A structural diagram of a circuit breaker provided in one embodiment of the present application;

[0046] Figure 2 for Figure 1 The circuit breaker shown in the figure omits part of the structure;

[0047] Figure 3 for Figure 2 A partial exploded view of the structure shown in;

[0048] Figure 4 for Figure 1 The circuit breaker shown in the figure omits part of the structure;

[0049] Figure 5 A structural diagram of an electric operating mechanism provided in one embodiment of the present application;

[0050] Figure 6 for Figure 5 Another perspective structural diagram of the electric operating mechanism shown in ( Figure 6 The mounting base is omitted);

[0051] Figure 7 for Figure 5 A structural diagram of another perspective of the electric operating mechanism shown in ( Figure 7 The mounting base is omitted);

[0052] Figure 8 for Figure 5 A structural diagram of the electric operating mechanism from another perspective shown in ;

[0053] Fig. 9 for Figure 5 A structural diagram of another perspective of the electric operating mechanism shown in ( Fig. 9 The mounting base is omitted);

[0054] Fig.10 A structural diagram of an electric operating mechanism provided in another embodiment of the present application ( Fig.10 The mounting base is omitted);

[0055] Fig.11 for Fig.10 A structural diagram of the electric operating mechanism from another perspective shown in ;

[0056] Fig.12 for Figure 5 A sectional view of a partial structure of a final driven gear of an electric operating mechanism shown in ;

[0057] Fig.13 for Fig.12 An exploded view of the structure shown in;

[0058] Fig.14 for Fig. 9 A structural diagram of the electric operating mechanism from another perspective shown in ;

[0059] Fig.15 for Figure 1 Exploded view of the circuit breaker shown in .

[0060] Description of reference numerals:

[0061] 1000, circuit breaker; 100, electric operating mechanism; 10, driving member; 20, first driving gear; 30, driven gear; 30a, first primary driven gear; 30b, first driven gear; 30c, second driven gear; 30d, third driven gear; 30e, fourth driven gear; 30f, first final driven gear; 30h, second primary driven gear; 30i, fifth driven gear; 30j, sixth driven gear; 30k, seventh driven gear; 30l, second final driven gear; 31, small gear; 32, large gear; 33, first wheel; 331, step portion; 34, second wheel; 35, mounting shaft; 351, mounting hole; 36, limit stop assembly; 361 , locking column; 362, elastic member; 40, connecting rod rocker arm assembly; 41, connecting rod; 42, rocker arm; 421, first part; 422, second part; 43, matching part; 50, bevel gear; 60, handle shaft; 70, second driving gear; 80, mounting seat; 81, mounting plate; 81a, first mounting plate; 81b, second mounting plate; 81c, third mounting plate; 81d, fourth mounting plate; 81e, fifth mounting plate; 200, body; 300, operating handle; 400, indicator; 401, closing indicator; 402, opening indicator; 403, driving part; 500, reset member; 600, inner shell; 700, control panel; 800, cover; 801, display window. DETAILED DESCRIPTION

[0062] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0063] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0064] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0067] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0068] See also Figure 1-Figure 4 In one embodiment of the present application, a circuit breaker 1000 is provided, comprising a body 200, an operating handle 300 and an electric operating mechanism 100. The operating handle 300 and the electric operating mechanism 100 are both mounted on the body 200. The electric operating mechanism 100 can push the operating handle 300 to move relative to the body 200, so as to remotely close or open the circuit breaker 1000, without the need for personnel to arrive at the site to operate the circuit breaker 1000.

[0069] See also Figure 5-Figure 8The electric operating mechanism 100 includes a mounting seat 80, a driving member 10, a gear assembly and a connecting rod rocker arm assembly 40. The mounting seat 80 is mounted on the body 200, and the driving member 10 is mounted on the mounting seat 80. The gear assembly is connected to the driving member 10 and has a final gear. The connecting rod rocker arm assembly 40 includes a connecting rod 41 and a rocker arm 42. One end of the connecting rod 41 is hinged to the final gear, and the hinge point is not colinear with the rotation axis around which the final gear rotates. One end of the rocker arm 42 is hinged to the mounting seat 80, and the middle part is hinged to the other end of the connecting rod 41. The end of the rocker arm 42 that is not hinged to the mounting seat 80 forms a matching portion 43, and the matching portion 43 is matched with the operating handle 300. The driving member 10 can drive the operating handle 300 to move through the gear assembly and the connecting rod rocker arm assembly 40, so that the circuit breaker 1000 is closed or opened.

[0070] In the above arrangement, since the electric operating mechanism 100 includes the connecting rod rocker arm assembly 40, the connecting rod rocker arm assembly 40 can enlarge the swing stroke, and under the premise that the connecting rod rocker arm assembly 40 has a small size, it can meet the swing range requirements of the operating handle 300, thereby improving the structural compactness of the entire electric operating mechanism 100, that is, improving the structural compactness of the circuit breaker 1000 and reducing the volume of the circuit breaker 1000. In addition, since the hinge point where the connecting rod 41 is hinged to the final gear is not colinear with the rotation axis of the final gear, the connecting rod rocker arm assembly 40 can further enlarge the swing stroke and further reduce the volume of the circuit breaker 1000.

[0071] Optionally, the gear assembly includes a first driving gear 20 and a multi-stage driven gear 30. The first driving gear 20 is connected to the driving member 10, and the driving member 10 is used to drive the first driving gear 20 to rotate around the first axis. The first-stage driven gear 30 is meshed with the first driving gear 20, and each adjacent two-stage driven gear 30 is meshed, and the connecting rod rocker arm assembly 40 is hinged with the final-stage driven gear 30. At this time, the final-stage driven gear 30 is the final-stage gear of the gear assembly. The first driving gear 20 can drive all the driven gears 30 to rotate around the second axis, the first axis is perpendicular to the second axis, and the second axis is parallel to the height direction of the circuit breaker 1000. Figure 6 Here, L1 represents the first axis, and L2 represents one of the second axes.

[0072] With the above arrangement, when the circuit breaker 1000 receives a closing command, the driving member 10 drives the first driving gear 20 to move, the first driving gear 20 drives the first-stage driven gear 30 to move, the upper-stage driven gear 30 drives the lower-stage driven gear 30 to move, and the final-stage driven gear 30 drives the connecting rod rocker arm assembly 40 to move, thereby driving the operating handle 300 to move relative to the body 200 to close the circuit. When the circuit breaker 1000 receives an opening command, the driving member 10 drives the first driving gear 20 to move, the first driving gear 20 drives the first-stage driven gear 30 to move, the upper-stage driven gear 30 drives the lower-stage driven gear 30 to move, and the final-stage driven gear 30 drives the connecting rod rocker arm assembly 40 to move, thereby driving the operating handle 300 to move in the opposite direction relative to the body 200 to open the circuit. In this way, the electric operating mechanism 100 can remotely realize the closing or opening of the circuit breaker 1000 without the need for personnel to arrive at the site to operate the circuit breaker 1000.

[0073] In the above-mentioned electric operating mechanism 100, the cooperation between the first driving gear 20 and the first-stage driven gear 30 changes the driving direction of the driving member 10. Since the second axis is parallel (consistent) with the height direction of the circuit breaker 1000, and the second axis is perpendicular to the first axis, that is, the placement direction of the driving member 10 is perpendicular to the height direction of the circuit breaker 1000, the driving member 10 and each driven gear 30 are arranged in parallel. Compared with the method of superimposing the driving member 10 and the transmission assembly in the height direction of the circuit breaker 1000 in the prior art, the height of the circuit breaker 1000 is reduced, and the application scenario of the circuit breaker 1000 is expanded.

[0074] In some specific embodiments, the first driving gear 20 can drive all the driven gears 30 to rotate around different second axes respectively. At this time, all the driven gears 30 are arranged in parallel and are not overlapped in the height direction of the circuit breaker 1000, thereby reducing the height of the circuit breaker 1000 and expanding the application scenarios of the circuit breaker 1000.

[0075] The driving member 10 is a driving motor, which has high driving accuracy and is easy to control.

[0076] In some embodiments, see Figure 6 The first driving gear 20 and the first-stage driven gear 30 both include a bevel gear 50, and the first driving gear 20 and the first-stage driven gear 30 are meshed through the bevel gear 50. The bevel gear 50 can change the driving direction of the driving member 10, which is convenient for the driving member 10 and each driven gear 30 to be arranged in parallel to avoid stacking, and the bevel gear 50 does not occupy too much space, thereby improving the compactness of the structure of the electric operating mechanism 100.

[0077] Continue reading Figure 7, except for the last driven gear 30, the other driven gears 30 include a coaxially arranged pinion 31 and a large gear 32, and the pinion 31 of the upper driven gear 30 meshes with the large gear 32 of the lower driven gear 30. In this way, the driven gears 30 form a reduction gear set to reduce the driving speed of the driving member 10 and avoid damage to the operating handle 300 when opening and closing the switch. At the same time, since the driven gear 30 includes a coaxially arranged pinion 31 and a large gear 32, and the pinion 31 of the upper driven gear 30 meshes with the large gear 32 of the lower driven gear 30, the arrangement of the driven gear 30 is more compact, and the volume of the electric operating mechanism 100 is reduced.

[0078] Optionally, see Fig. 9 All driven gears 30 are arranged to extend along the first direction, and the extension direction of the first axis and the extension direction of the second axis are perpendicular to the first direction. In this way, the arrangement direction of all driven gears 30 is perpendicular to the first axis, which prevents the electric operating mechanism 100 from extending too long in the extension direction of the first axis and reduces the size of the electric operating mechanism 100 in the extension direction of the first axis.

[0079] Continue reading Figure 7 and Fig.10 The electric operating mechanism 100 also includes a handle shaft 60 and a second driving gear 70, the second driving gear 70 is coaxially mounted on the handle shaft 60, and the second driving gear 70 is meshed with the final driven gear 30. The handle shaft 60 can drive the second driving gear 70 to rotate around a third axis, and the third axis is parallel to all the second axes. The operating handle shaft 60 can drive the operating handle 300 to move through the second driving gear 70, the final and driven gears 30 and the connecting rod rocker arm assembly 40, so that the circuit breaker 1000 is closed or opened. With such a configuration, the electric operating mechanism 100 can not only automatically promote closing or opening, but also manually operate the handle shaft 60 to close or open the circuit breaker 1000, thereby increasing the application scenarios of the electric operating mechanism 100.

[0080] In some embodiments, see Figure 8 The mounting seat 80 includes two mounting plates 81, which are arranged at intervals in the extending direction of the second axis. The two mounting plates 81 are respectively a first mounting plate 81a and a second mounting plate 81b.

[0081] Further, the first driving gear 20 is located between the first mounting plate 81a and the second mounting plate 81b, part of the driven gear 30 is located on the side of the first mounting plate 81a facing away from the second mounting plate 81b, part of the driven gear 30 is passed through the side of the first mounting plate 81a facing away from the second mounting plate 81b and is arranged between the first mounting plate 81a and the second mounting plate 81b, part of the driven gear 30 is located between the first mounting plate 81a and the second mounting plate 81, and the remaining part of the driven gear 30 is passed through the side of the second mounting plate 81b facing the first mounting plate 81a and is arranged on the second mounting plate 81b to the other side. The second driving gear 70 is located on the side of the second mounting plate 81b facing away from the first mounting plate 81a. In this way, the first driving gear 20, all the driven gears 30 and the second driving gear 70 are concentrated on or near the first mounting plate 81a and the second mounting plate 81b in the extension direction of the second axis, so that the electric operating mechanism 100 has a higher integration degree in the height direction of the circuit breaker 1000, which can reduce the height of the circuit breaker 1000.

[0082] In some specific implementations, see Figure 6 and Fig. 9 , the driven gear 30 includes 6 driven gears 30, namely, the first primary driven gear 30a, the first driven gear 30b, the second driven gear 30c, the third driven gear 30d, the fourth driven gear 30e and the first final driven gear 30f. Among them, the first final driven gear 30f is the final gear of the gear assembly. The first primary driven gear 30a and the first driven gear 30b are located on the side of the first mounting plate 81a facing away from the second mounting plate 81b, the second driven gear 30c is arranged through the first mounting plate 81a to between the first mounting plate 81a and the second mounting plate 81b through the side of the first mounting plate 81a facing away from the second mounting plate 81b, the third driven gear 30d and the fourth driven gear 30e are located between the first mounting plate 81a and the second mounting plate 81b, and the first final driven gear 30f is arranged from the side of the second mounting plate 81b facing the first mounting plate 81a to the other side. The driving member 10 drives the first driving gear 20 to rotate around the first axis, and the first primary driven gear 30a, the first driven gear 30b, the second driven gear 30c, the third driven gear 30d, the fourth driven gear 30e and the first final driven gear 30f rotate in sequence, thereby driving the connecting rod rocker arm assembly 40 to move.

[0083] It is conceivable that in some other embodiments, when the mounting base 80 includes two mounting plates 81 , the number of driven gears 30 included in the electric operating mechanism 100 is not limited, that is, it is not limited to the above-mentioned 6 driven gears 30 .

[0084] In some embodiments, see Fig.11The mounting seat 80 includes three mounting plates 81, which are arranged at intervals in the extension direction of the second axis. The three mounting plates 81 are respectively a third mounting plate 81c, a fourth mounting plate 81d and a fifth mounting plate 81e which are arranged at intervals in sequence.

[0085] Further, the first driving gear 20 and part of the driven gear 30 are located between the third mounting plate 81c and the fourth mounting plate 81d, part of the driven gear 30 is located between the third mounting plate 81c and the fourth mounting plate 81d, the remaining part is located between the fourth mounting plate 81d and the fifth mounting plate 81e, and the remaining part of the driven gear 30 and the second driving gear 70 are located between the fourth mounting plate 81d and the fifth mounting plate 81e. The first driving gear 20, all the driven gears 30 and the second driving gear 70 are concentrated between the third mounting plate 81c and the fifth mounting plate 81e in the extension direction of the second axis, so that the electric operating mechanism 100 has a high degree of integration in the height direction of the circuit breaker 1000, and the height of the circuit breaker 1000 can be reduced.

[0086] In some specific implementations, see Fig.10 The driven gear 30 includes five driven gears 30, namely, a second primary driven gear 30h, a fifth driven gear 30i, a sixth driven gear 30j, a seventh driven gear 30k and a second final driven gear 30l. Among them, the second final driven gear 30l is the final gear of the gear assembly. The second primary driven gear 30h, the fifth driven gear 30i and the sixth driven gear 30j are located between the third mounting plate 81c and the fourth mounting plate 81d, a portion of the seventh driven gear 30k is located between the third mounting plate 81c and the fourth mounting plate 81d, and the remaining portion is located between the fourth mounting plate 81d and the fifth mounting plate 81e, and the second final driven gear 30l is located between the fourth mounting plate 81d and the fifth mounting plate 81e. The driving member 10 drives the first driving gear 20 to rotate around the first axis, and the second primary driven gear 30h, the fifth driven gear 30i, the sixth driven gear 30j, the seventh driven gear 30k and the second final driven gear 30l rotate in sequence, thereby driving the connecting rod rocker arm assembly 40 to move.

[0087] It is conceivable that in some other embodiments, when the mounting base 80 includes three mounting plates 81 , the number of driven gears 30 included in the electric operating mechanism 100 is not limited, that is, it is not limited to the above-mentioned five driven gears 30 .

[0088] Optionally, continue to Figure 6The final driven gear 30 includes a first wheel 33 and a second wheel 34 sleeved on the same mounting shaft 35. The first wheel 33 is meshed with the previous driven gear 30, and the second wheel 34 is meshed with the second driving gear 70. The connecting rod rocker arm assembly 40 is connected to the second wheel 34 or the mounting shaft 35. The mounting shaft 35 is fixedly connected to the second wheel 34. Fig.12 and Fig.13 A limit stop assembly 36 is provided between the first wheel 33 and the mounting shaft 35. When the first wheel 33 rotates forward, it can drive the mounting shaft 35 and the second wheel 34 to rotate synchronously through the limit stop assembly 36. When the second driving gear 70 drives the second wheel 34 and the mounting shaft 35 to rotate forward, the first wheel 33 does not rotate synchronously with the second wheel 34 under the action of the limit stop assembly 36. In this way, the driving member 10 is prevented from rotating when the electric operating mechanism 100 is manually operated, thereby protecting the driving member 10.

[0089] Furthermore, the position-limiting and anti-return assembly 36 includes a locking column 361 and an elastic member 362. The mounting shaft 35 is provided with a mounting hole 351 in the radial direction. The locking column 361 and the elastic member 362 are both located in the mounting hole 351, and the elastic member 362 is located between the locking column 361 and the mounting shaft 35. The first wheel 33 is provided with a step portion 331. When the first wheel 33 rotates forward, the locking column 361 can cooperate with the step portion 331, and the first wheel 33 can drive the mounting shaft 35 and the second wheel 34 to rotate. When the second wheel 34 drives the mounting shaft 35 to rotate forward, the locking column 361 does not contact the step portion 331, and the mounting shaft 35 idles relative to the first wheel 33. In this way, when the first wheel 33 rotates, it can drive the second wheel 34 to rotate, but when the second wheel 34 rotates, it cannot drive the first wheel 33 to rotate, so as to prevent the first wheel 33 from driving the driving member 10 to rotate through the upper driven gear 30 and the first driving gear 20, thereby protecting the driving member 10.

[0090] It is conceivable that the limit stop assembly 36 may also be arranged in other ways, as long as it can achieve the reverse locking effect.

[0091] Optionally, continue to Fig.14 The rocker arm 42 includes a first part 421 and a second part 422 which are hinged to each other, the first part 421 is hinged to the mounting seat 80, the connecting rod 41 is hinged to the first part 421, and the matching portion 43 is formed on the second part 422. By setting the rocker arm 42 as two parts which are hinged to each other, the rocker arm 42 can swing more flexibly.

[0092] See also Figure 8 The electric operating mechanism 100 includes a connecting plate 90, which is a fan-shaped plate. The connecting plate 90 is arranged on the end surface of the second wheel 34 facing away from the first wheel 33 and is connected to the mounting shaft 35. The connecting rod 41 is hinged to the final gear through the connecting plate 90. Alternatively, refer to Fig.11 The connecting disk 90 is a circular disk, which is connected to the mounting shaft 35. The diameter of the connecting disk 90 is larger than the diameter of the mounting shaft 35. The connecting rod 41 is hinged to the final gear through the connecting disk 90. ​​The setting of the connecting disk 90 facilitates the hinge point to be not aligned with the rotation axis. It can be understood that in some other embodiments, the connecting rod 41 can also be directly hinged to the final gear, which is not limited here.

[0093] In some embodiments, see 15, the circuit breaker 1000 further includes an inner shell 600 and a control board 700. In the height direction of the circuit breaker 1000, the electric operating mechanism 100, the inner shell 600 and the control board 700 are sequentially installed above the body 200. That is, the electric operating mechanism 100 is installed on the body 200, the inner shell 600 is installed on the electric operating mechanism 100, and the control board 700 is installed on the inner shell 600. Among them, the control board 700 is used to control the electric operating mechanism 100.

[0094] Optionally, the circuit breaker 1000 further includes a cover 800, which is connected to the body 100 and covers the electric operating mechanism 100, the inner shell 600 and the control board 700. That is, the cover 800 is disposed on the body 200 and forms an installation space with the body 200, and the electric operating mechanism 100, the inner shell 600 and the control board 700 are all located in the installation space.

[0095] The electric operating mechanism 100, the inner shell 600 and the control board 700 are arranged in sequence in the height direction of the circuit breaker 1000, and the cover 500 is connected to the body 200 and is arranged outside the electric operating mechanism 100, the inner shell 600 and the control board 70. Such assembly makes the circuit breaker 1000 and various structures related to the electric operating mechanism 100 compactly assembled, making the volume of the circuit breaker 1000 small, meeting the user's demand for miniaturization of the circuit breaker 1000.

[0096] Continue reading Figure 1 and Figure 2The circuit breaker 1000 further includes an indicator 400 and a reset member 500. The indicator 400 is mounted on the body 200, and the reset member 500 is disposed between the body 200 and the indicator 400. When the connecting rod rocker arm assembly 40 of the electric operating mechanism 100 drives the operating handle 300 to move relative to the body 200 to close the circuit, the connecting rod rocker arm assembly 40 and / or the operating handle 300 can push the indicator 400 to move relative to the body 200, the reset member 500 stores energy, and the indicator 400 displays closed circuit. That is, when the operating handle 300 completes closing, the indicator 400 can display closed circuit, prompting the user that the circuit breaker 1000 is in a closed state at this time. When the connecting rod rocker arm assembly 40 drives the operating handle 300 to move relative to the body 200 to open the circuit, the indicator 400 is released, and the indicator 400 is reset under the action of the reset member 500, and the indicator 400 displays open circuit. That is, when the operating handle 300 completes the opening, the indicator 400 can display the opening, prompting the user that the circuit breaker 1000 is in the opening state at this time.

[0097] Optionally, continue to Figure 1 and Figure 2 , a display window 801 is provided on the cover 800, and the indicator 400 is provided with a closing indicator 401 and an opening indicator 402. When the circuit breaker 1000 is in the closing state, the closing indicator 401 is located at the display window 801 to indicate closing; when the circuit breaker 1000 is in the opening state, the opening indicator 402 is located at the display window 801 to indicate opening. Specifically, the closing indicator 401 is a red mark applied on the indicator 400, and the opening indicator 402 is a green mark applied on the indicator 400.

[0098] The indicator 400 further includes a driving part 403, and the closing indicator 401 and the opening indicator 402 are both connected to the driving part 403. The electric operating mechanism 100 and / or the operating handle 300 can push the indicator 400 to move through the driving part 403. The control panel 700 is located above the operating handle 300. In the width direction of the circuit breaker 1000, the driving part 403 is located on one side of the operating handle 300, the gear assembly of the electric operating mechanism 100 is located on the other side of the operating handle 300, and the closing indicator 401 and the opening indicator 402 are both located above the control panel 700. Since the driving part 403 and the gear assembly are respectively located on both sides of the operating handle 300, and the closing indicator 401 and the opening indicator 402 are both located above the operating handle 300, in this way, multiple structures are respectively located at different positions of the operating handle 300, so that the various structures of the circuit breaker 1000 are arranged reasonably and compactly, and the volume of the circuit breaker 1000 is reduced.

[0099] Furthermore, in the length direction of the circuit breaker 1000 , the driving member 10 is located on one side of the operating handle 300 , so that the driving portion 403 , the gear assembly and the driving member 10 are respectively arranged at different positions of the operating handle 300 , thereby increasing the rationality of the structural arrangement of the circuit breaker 1000 .

[0100] Another embodiment of the present application further provides an electric operating mechanism 100 included in the above-mentioned circuit breaker 1000. Since the above-mentioned circuit breaker 1000 has beneficial effects, the electric operating mechanism 100 belonging to the above-mentioned circuit breaker 1000 has the same beneficial effects, which will not be described in detail here.

[0101] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0102] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An electric operating mechanism for a circuit breaker, characterized in that: include: Mounting seat (80); A driving member (10) mounted on the mounting seat (80); a gear assembly connected to the driving member (10) and having a final gear; The connecting rod rocker arm assembly (40) comprises: A connecting rod (41) having one end hinged to the final gear, and a hinge point and a rotation axis around which the final gear rotates are not colinear; A rocker arm (42) has one end hinged to the mounting seat (80), and a middle portion hinged to the other end of the connecting rod (41); the end of the rocker arm (42) not hinged to the mounting seat (80) forms a mating portion (43) for mating with the operating handle (300) of the circuit breaker; the driving member (10) can drive the operating handle (300) to move through the gear assembly and the connecting rod rocker arm assembly (40), so that the circuit breaker is closed or opened.

2. The electric operating mechanism according to claim 1, characterized in that: The gear assembly comprises a first driving gear (20) and a multi-stage driven gear (30), wherein the first driving gear (20) is connected to the driving member (10), and the driving member (10) is used to drive the first driving gear (20) to rotate around a first axis; The first-stage driven gear (30) is meshed with the first driving gear (20), and each adjacent two stages of the driven gears (30) are meshed with each other; the first driving gear (20) can drive all the driven gears (30) to rotate around a second axis, the second axis is parallel to the height direction of the circuit breaker, and the first axis is perpendicular to the second axis; The final driven gear (30) forms the final gear of the gear assembly.

3. The electric operating mechanism according to claim 2, characterized in that: The electric operating mechanism also includes: A handle shaft (60) and a second driving gear (70), wherein the second driving gear (70) is coaxially mounted on the handle shaft (60), and the second driving gear (70) is meshed with the final driven gear (30); The handle shaft (60) can drive the second driving gear (70) to rotate around a third axis, and the third axis is parallel to the second axis; Operating the handle shaft (60) can drive the operating handle (300) to move via the second driving gear (70), the final driven gear (30) and the connecting rod rocker arm assembly (40), so that the circuit breaker is closed or opened.

4. The electric operating mechanism according to claim 3, characterized in that: The mounting seat (80) comprises two mounting plates (81), and the two mounting plates (81) are arranged at intervals in the extension direction of the second axis; the two mounting plates (81) are respectively a first mounting plate (81a) and a second mounting plate (81b); The first driving gear (20) is located between the first mounting plate (81a) and the second mounting plate (81b), part of the driven gear (30) is located on the side of the first mounting plate (81a) facing away from the second mounting plate (81b), part of the driven gear (30) is passed through the first mounting plate (81a) on the side facing away from the second mounting plate (81b) to between the first mounting plate (81a) and the second mounting plate (81b), part of the driven gear (30) is located between the first mounting plate (81a) and the second mounting plate (81b), and the remaining part of the driven gear (30) is passed through the second mounting plate (81b) on the side facing the first mounting plate (81a) to the other side; The second driving gear (70) is located on a side of the second mounting plate (81b) facing away from the first mounting plate (81a).

5. The electric operating mechanism according to claim 4, characterized in that: The driven gear (30) comprises a first primary driven gear (30a), a first driven gear (30b), a second driven gear (30c), a third driven gear (30d), a fourth driven gear (30e) and a first final driven gear (30f) which are meshed in sequence; The first primary driven gear (30a) and the first driven gear (30b) are located on the side of the first mounting plate (81a) facing away from the second mounting plate (81b); the second driven gear (30c) is passed through the first mounting plate (81a) to between the first mounting plate (81a) and the second mounting plate (81b) via the side of the first mounting plate (81a) facing away from the second mounting plate (81b); the third driven gear (30d) and the fourth driven gear (30e) are located between the first mounting plate (81a) and the second mounting plate (81b); the first final driven gear (30f) is passed through the second mounting plate (81b) from one side of the second mounting plate (81b) facing the first mounting plate (81a) to the other side.

6. The electric operating mechanism according to claim 3, characterized in that: The mounting seat (80) comprises three mounting plates (81), and the three mounting plates (81) are arranged at intervals in the extension direction of the second axis; the three mounting plates (81) are respectively a third mounting plate (81c), a fourth mounting plate (81d) and a fifth mounting plate (81e) which are arranged at intervals in sequence; The first driving gear (20) and part of the driven gear (30) are located between the third mounting plate (81c) and the fourth mounting plate (81d), part of the driven gear (30) is located between the third mounting plate (81c) and the fourth mounting plate (81d), the remaining part is located between the fourth mounting plate (81d) and the fifth mounting plate (81e), and the remaining part of the driven gear (30) and the second driving gear (70) are located between the fourth mounting plate (81d) and the fifth mounting plate (81e).

7. The electric operating mechanism according to claim 6, characterized in that: The driven gear (30) comprises a second first-stage driven gear (30h), a fifth driven gear (30i), a sixth driven gear (30j), a seventh driven gear (30k) and a second final-stage driven gear (30l) which are meshed in sequence; The second first-stage driven gear (30h), the fifth driven gear (30i) and the sixth driven gear (30j) are located between the third mounting plate (81c) and the fourth mounting plate (81d), a portion of the seventh driven gear (30k) is located between the third mounting plate (81c) and the fourth mounting plate (81d), and the remaining portion is located between the fourth mounting plate (81d) and the fifth mounting plate (81e), and the second final-stage driven gear (30l) is located between the fourth mounting plate (81d) and the fifth mounting plate (81e).

8. The electric operating mechanism according to claim 3, characterized in that: The final driven gear (30) comprises a first wheel (33) and a second wheel (34) sleeved on the same mounting shaft (35), the first wheel (33) meshing with the previous driven gear (30), and the second wheel (34) meshing with the second driving gear (70); the connecting rod rocker arm assembly (40) is connected to the second wheel (34) or the mounting shaft (35); the mounting shaft (35) and the second wheel (34) are fixedly arranged; A limit stop assembly (36) is provided between the first wheel (33) and the mounting shaft (35). When the first wheel (33) rotates in the forward direction, the limit stop assembly (36) can drive the mounting shaft (35) and the second wheel (34) to rotate synchronously. When the second driving gear (70) drives the second wheel (34) and the mounting shaft (35) to rotate in the forward direction, the first wheel (33) does not rotate synchronously with the second wheel (34) under the action of the limit stop assembly (36).

9. The electric operating mechanism according to claim 8, characterized in that: The position-limiting and anti-return assembly (36) comprises a locking column (361) and an elastic member (362); a mounting hole (351) is radially provided on the mounting shaft (35); the locking column (361) and the elastic member (362) are both located in the mounting hole (351); and the elastic member (362) is located between the locking column (361) and the mounting shaft (35); The first wheel (33) is provided with a step portion (331). When the first wheel (33) rotates in the forward direction, the locking column (361) can cooperate with the step portion (331), and the first wheel (33) can drive the installation shaft (35) and the second wheel (34) to rotate; when the second wheel (34) drives the installation shaft (35) to rotate in the forward direction, the locking column (361) does not contact the step portion (331), and the installation shaft (35) idles relative to the first wheel (33).

10. The electric operating mechanism according to claim 8, characterized in that: The electric operating mechanism also includes: a connecting disk (90), wherein the connecting disk (90) is a fan-shaped disk, the connecting disk (90) is arranged on the end surface of the second wheel (34) facing away from the first wheel (33) and is connected to the mounting shaft (35), and the connecting rod (41) is hingedly connected to the final gear through the connecting disk (90); or The connecting disk (90) is a circular disk, and the connecting disk (90) is connected to the installation shaft (35). The diameter of the connecting disk (90) is larger than the diameter of the installation shaft (35). The connecting rod (41) is hinged to the final gear through the connecting disk (90).

11. A circuit breaker, characterized in that: It comprises a body (200), an operating handle (300) and an electric operating mechanism according to any one of claims 1 to 10, wherein the operating handle (300) and the electric operating mechanism are both mounted on the body (200).

12. The circuit breaker according to claim 11, characterized in that The circuit breaker further comprises an inner shell (600) and a control panel (700): In the height direction of the circuit breaker, the electric operating mechanism (100), the inner shell (600) and the control panel (700) are sequentially installed above the body (200), and the operating handle (300) extends into the inner shell (600); the control panel (700) is used to control the electric operating mechanism (100); An indicator (400) mounted on the inner shell (600); A reset member (500) is disposed between the body (200) and the indicator member (400); When the connecting rod rocker arm assembly (40) of the electric operating mechanism (100) drives the operating handle (300) to move relative to the main body (200) to close the switch, the connecting rod rocker arm assembly (40) and / or the operating handle (300) can push the indicator (400) to move relative to the main body (200), the reset member (500) stores energy, and the indicator (400) displays closed switch; when the connecting rod rocker arm assembly (40) drives the operating handle (300) to move relative to the main body (200) to open the switch, the indicator (400) is released, the indicator (400) is reset under the action of the reset member (500), and the indicator (400) displays open switch.

13. The circuit breaker according to claim 12, characterized in that: The control panel (700) is located on the upper side of the operating handle (300), and the indicator (400) includes a driving part (403) and an indicating part; In the width direction of the circuit breaker, the driving portion (403) is located on one side of the operating handle (300), the gear assembly is located on the other side of the operating handle (300), and the indicating portion is located on the upper side of the control panel (700).

14. The circuit breaker according to claim 12, characterized in that In the width direction of the circuit breaker, the gear assembly is located on one side of the operating handle (300), and in the length direction of the circuit breaker, the driving member (10) is located on one side of the operating handle (300).

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