A new type of electric operating mechanism for miniature circuit breakers

Abstract

The present invention provides a new type of electric operating mechanism for a miniature circuit breaker, including an operating mechanism body installed and fixed on the circuit breaker body; the operating mechanism body includes a shell, a switch-on and switch-off operating mechanism, a leakage tripping device for leakage protection of the circuit breaker, and a control monitoring module installed in the operating mechanism body and used to control the start and stop of the driving mechanism in the operating mechanism body; the shell is hollow inside and is composed of a bottom shell and a cover that can be detachably assembled together; slide grooves are symmetrically arranged on the inner sides of the bottom shell and the cover; the switch-on and switch-off operating mechanism includes a handle, a square shaft, and a driving mechanism, a driving member, a reversing member, a switch-on and switch-off rod, and a reflective block respectively arranged in the shell. The control part of the present invention has sufficient available space, and the product function has strong scalability; there will be no interference phenomenon in automatic and manual operation alone or mixed operation, the functional characteristics are highly integrated, the overall layout is standardized, and the structure is compact; the manufacturing process of PCBA is simplified, and the cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a novel electric operating mechanism for a miniature circuit breaker. Background Art

[0002] Miniature circuit breakers are widely used in low-voltage power distribution networks, mainly in various places such as industry, commerce, high-rise buildings and residential buildings. They can provide overcurrent protection and leakage protection for electrical equipment such as motors, distribution lines, and lighting circuits. Currently, most miniature circuit breakers on the market are gear mechanisms, and most of them use gear sets with incomplete gears. When closing the circuit, gear interference can easily cause the circuit breaker to be passively tripped. There is also interference in manual closing and automatic opening. All effective gears for closing the circuit must be forced through the interfering gears, which can easily cause gear damage and tripping problems. The multi-stage gear structure also occupies a relatively large space. Summary of the invention

[0003] In view of the above problems, the object of the present invention is to provide a new electric operating mechanism for miniature circuit breakers which has a compact structure, no interference between automatic and manual operation or mixed operation, high integration, standardized overall layout, compact structure and cost saving.

[0004] The specific technical solutions are as follows:

[0005] A new type of electric operating mechanism for a miniature circuit breaker includes an operating mechanism body installed and fixed on the circuit breaker body (the operating mechanism body is usually installed together with the circuit breaker body by rivets, and the two become an inseparable entity), the operating mechanism body is designed to have a module width (18mm), and the detection signal line is connected to the control monitoring module (main control board) through the square hole of the bottom shell on the shell. The operating mechanism body includes a shell, a switch-on and switch-off operating mechanism, a leakage tripping device for leakage protection of the circuit breaker, and a control monitoring module (i.e., a main control board, a conventional circuit breaker main control board) installed in the operating mechanism body and used to control the start and stop of the driving mechanism in the operating mechanism body; the shell is hollow inside and consists of a bottom shell and a cover that can be detachably assembled together; and slide grooves are symmetrically arranged on the inner sides of the bottom shell and the cover.

[0006] The switch-on and switch-off operating mechanism comprises a handle, a square shaft, and a driving mechanism, a driving member, a reversing member, a switch-on and switch-off rod, and a reflective block which are respectively arranged in a housing.

[0007] The handle is rotatably installed in the circuit breaker body.

[0008] The front end of the square shaft passes through the bottom shell and extends into the housing, and the rear end is plugged into the handle and can rotate with the handle;

[0009] The driving mechanism is a reduction motor installed in the housing and its motor shaft points to the right side of the housing.

[0010] The left side of the driving member is installed on the motor shaft of the reduction motor through the installation hole arranged thereon and can rotate with the motor shaft; a driving groove is arranged on the outer periphery of the driving member; and a reflective block installation hole is arranged in the driving groove.

[0011] The reversing member is installed in the shell by means of guide bars 1 and 2 which are arranged on its front and rear sides and respectively inserted into the inner slide grooves of the bottom shell and the surface cover; a reversing column 1 which is engaged in the driving groove is provided at the bottom of the reversing member. The reversing column 1 can move along the driving groove under the drive of the driving member and drive the reversing member to move left and right along the slide groove. The top of the reversing member protrudes upward and a reversing column 2 is provided on both sides of the protrusion in front and behind.

[0012] The splitter and combiner rod is sleeved on the front end of the square shaft through a square hole arranged on the rear side of the rod body; a splitter and combiner rod groove is arranged on the front side of the top of the splitter and combiner rod body; a splitter and combiner rod upper and lower arms are arranged at the bottom of the splitter and combiner rod body, and an inverted U-shaped groove sleeved on the second reversing column is arranged at the bottom of the splitter and combiner rod upper and lower arms.

[0013] The reflective blocks are multiple and are respectively installed in the reflective block installation holes and the separation and combination rod grooves.

[0014] The control and monitoring module is arranged in the shell and located in front of the opening and closing operating mechanism. A photoelectric sensor is provided on the control and monitoring module corresponding to the reflective block. The control and monitoring module controls the start and stop of the reduction motor through the light signals reflected by the reflective blocks at different positions received by the photoelectric sensor.

[0015] Furthermore, the leakage tripping device is installed in the housing, including a tripping coil, a linkage rod, a reset torsion spring, a reset spring, a moving iron core, and a circuit breaker tripping linkage shaft; the tripping coil is installed in the housing and is located on the right side of the opening and closing operating mechanism; the linkage rod is located between the tripping coil and the opening and closing operating mechanism, a column one is provided on the front side surface of the top of the linkage rod, a column two is provided on the front side surface of the bottom of the linkage rod, a buckle is provided on the right end of the front side surface of the linkage rod, a linkage rod waist-shaped hole is provided on the left side of the front side surface of the linkage rod, and an axis hole is provided in the column one, and the linkage rod passes through the axis The hole sleeve is arranged on the bottom shell column preset on the inner side of the bottom shell; the reset torsion spring is sleeved on the column body 1, the torsion spring arm 1 of the reset torsion spring is clamped on the inner side surface of the bottom shell, and the torsion spring arm 2 is placed at the buckle; the reset spring is arranged in the middle inner hole of the tripping coil; the left side of the moving iron core is sleeved on the column body 2 through the waist-shaped hole of the moving iron core arranged thereon, and the core rod on the right side of the moving iron core extends into the middle inner hole of the tripping coil and contacts the reset spring; one end of the circuit breaker tripping linkage shaft is installed in the circuit breaker body, and the other end passes through the bottom shell and extends into the shell body and is then placed in the waist-shaped hole of the linkage rod.

[0016] Furthermore, a linkage rod rib is provided on the lower left portion of the front side of the linkage rod; correspondingly, a locking strip is provided on the right side of the driving member, which can drive the linkage rod rib to rotate and drive the circuit breaker tripping linkage shaft to rotate to trip the circuit breaker.

[0017] Furthermore, the opening and closing operating mechanism and the leakage tripping device are placed in a straight line in the housing.

[0018] Furthermore, the reduction motor and the driving member are arranged on the same axis.

[0019] Furthermore, the driving member is in a cylindrical structure.

[0020] Furthermore, the driving groove includes groove one, groove two, groove three, and groove four, which are respectively concavely arranged on the outer periphery of the driving member; the groove one is obliquely arranged from left to right around the front side of the outer periphery of the driving member; the groove two is V-shaped and arranged on the rear side of the outer periphery of the driving member, and the width of the groove two gradually increases from front to back around the outer periphery of the driving member; the groove three is arranged on the front side of the outer periphery of the driving member, and is composed of a groove body arranged horizontally and a groove body arranged vertically around the outer periphery of the driving member and connected to each other, and the vertical groove body of the groove three is located on the right side of the outer periphery of the driving member; the groove four is arranged on the outer periphery of the driving member The rear side is composed of a horizontally arranged groove and a vertically arranged groove body around the outer periphery of the driving member and connected to each other. The groove of the vertical groove body of groove four is connected with the groove on the left side of the rear end of groove two, and the vertical groove body of groove four is located on the left side of the outer periphery of the driving member; the front end groove of groove two and the left end groove of groove one are intersected and connected at the left end groove of the horizontal groove body of groove three, and a reflective block mounting hole one is provided at the intersection; the right side groove at the rear end of groove two and the right end groove of groove one and the groove of the vertical groove body of groove three are intersected and connected at the right end groove of the horizontal groove body of groove four, and a reflective block mounting hole two is provided at the intersection.

[0021] Furthermore, the number of the photoelectric sensors is four, of which two photoelectric sensors are correspondingly arranged below the reflective block mounting hole 1 and the reflective block mounting hole 2 on the driving member; the other two photoelectric sensors are correspondingly arranged directly in front of the position of the opening and closing rod groove when the opening and closing rod is in the closing position or the opening position.

[0022] The advantages of the present invention are:

[0023] (1) It can realize the compact layout of internal mechanisms and parts, and achieve the minimum design in thickness and height; it expands the available space of the control part, thereby enhancing the functional scalability of the product.

[0024] (2) There will be no interference between automatic and manual operation alone or in combination. Each will run according to its corresponding planned route, and all actions comply with normal circuit breaker operation specifications. The functional features such as drive parts and linkage parts are highly integrated, the overall layout is standardized, and the structure is compact.

[0025] (3) By integrating the functions of rotation, reset, and locking on the linkage rod, it is possible to place the electromagnet horizontally, close to the same axis as the main operating mechanism, creating a regular rectangle for the PCBA below, simplifying the PCBA manufacturing process and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention is further described in detail below with reference to the accompanying drawings.

[0027] Figure 1 It is a structural schematic diagram of a novel electric operating mechanism for a miniature circuit breaker according to the present invention;

[0028] Figure 2 It is a structural schematic diagram of the bottom shell of the novel electric operating mechanism for the miniature circuit breaker of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the opening and closing operating mechanism of the novel electric operating mechanism for the miniature circuit breaker of the present invention;

[0030] Figure 4 Schematic diagram of the structure of the driving member in the new electric operating mechanism for miniature circuit breaker in different states of the present invention ( Figure 4 The lower figure is obtained by rotating the upper figure 180°);

[0031] Figure 5 It is a structural schematic diagram of a commutation member in a novel electric operating mechanism for a miniature circuit breaker according to the present invention;

[0032] Figure 6 It is a structural schematic diagram of the opening and closing rod in the novel electric operating mechanism for the miniature circuit breaker of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the novel electric operating mechanism for miniature circuit breaker of the present invention when it is in the open state;

[0034] Figure 8 It is a structural schematic diagram of the novel electric operating mechanism for miniature circuit breaker of the present invention when it is in a closed state;

[0035] Fig. 9 It is a structural schematic diagram of the novel electric operating mechanism for miniature circuit breaker of the present invention in a remote locking state;

[0036] Fig.10 This is a developed view of the outer surface of a driving member in the novel electric operating mechanism for a miniature circuit breaker according to the present invention;

[0037] Fig.11 It is a structural schematic diagram of the leakage tripping device in the novel electric operating mechanism for the miniature circuit breaker of the present invention;

[0038] Fig.12 It is a structural schematic diagram of a linkage rod in a novel electric operating mechanism for a miniature circuit breaker according to the present invention;

[0039] As shown in the figure: 1-circuit breaker body, 2-operating mechanism body, 201-housing, 202-opening and closing operating mechanism, 203-leakage tripping device, 204-control monitoring module, 3-bottom shell, 301-motor installation position, 302-slideway, 303-bottom shell hole, 304-bottom shell column, 305-tripping coil installation position, 306-limiting rib 306, 307-square hole, 4-face cover, 5-handle, 6-square shaft, 7-reduction motor, 8-driving part, 801-installation hole, 802-locking strip, 803-groove one, 804-groove two, 805-groove three, 806-groove four, 807-reflective block installation hole one, 80 8-reflective block mounting hole 2, 9-commutating part, 901-commutating column 1, 902-guide bar 1, 903-commutating column 2, 904-guide bar 2, 10-opening and closing rod, 1001-rod body, 1002-opening and closing rod groove, 1003-square hole, 1004-opening and closing rod upper and lower arms, 11-reflective block, 12-linking rod, 1201-linking rod rib, 1202-axis hole, 1203-column 1, 1204-buckle, 1205-column 2, 1206-linking rod waist hole, 13-moving iron core, 14-reset torsion spring, 15-tripping coil, 16-reset spring, 17-circuit breaker tripping linkage shaft, 18-photoelectric sensor. DETAILED DESCRIPTION

[0040] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0041] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Embodiment 1:

[0044] like Figure 1 As shown, a new type of electric operating mechanism for a miniature circuit breaker of the present invention includes an operating mechanism body 2 installed and fixed on the circuit breaker body 1 (the operating mechanism body 2 is usually installed together with the circuit breaker body 1 by rivets, and the two become an inseparable entity). The operating mechanism body 2 includes a shell 201, a switch-on and switch-off operating mechanism 202, a leakage tripping device 203 for leakage protection of the circuit breaker, and a control monitoring module (i.e., a main control board, using a conventional circuit breaker main control board) 204 installed in the operating mechanism body 2 and used to control the start and stop of the driving mechanism in the operating mechanism body 2; the shell 201 is hollow inside and is composed of a bottom shell 3 and a cover 4 that can be detachably assembled together; slide grooves 302 are symmetrically arranged on the inner sides of the bottom shell 3 and the cover 4, and in addition, as shown in FIG. Figure 2 As shown, the bottom shell 3 is also provided with a motor mounting position 301 for mounting the reduction motor 7, a bottom shell hole 303 for the square shaft 6 to extend into the housing 201, a bottom shell column 304 for sleeve-mounting the linkage rod 12, a tripping coil mounting position 305 for mounting the tripping coil 15, a limiting rib 306 for limiting the tripping coil 15 and blocking the right side of the reset spring 16, and a square hole 307 for the detection signal line to pass through. The operating mechanism body 2 is designed to have a module width (18mm), and the detection signal line is connected to the control monitoring module (main control board) through the upper hole 307 of the bottom shell 3. The opening and closing operating mechanism 202 and the leakage tripping device 203 are placed in the housing 201 in a straight line.

[0045] like Figure 3 As shown, the opening and closing operating mechanism includes a handle 5, a square shaft 6, and a driving mechanism, a driving member 8, a reversing member 9, an opening and closing rod 10, and a reflective block 11 respectively arranged in the housing 201. The handle 5 is rotatably installed in the circuit breaker body 1 (the handle 5 is a structure of the circuit breaker). The front end of the square shaft 6 passes through the bottom shell 3 and extends into the housing 201, and the rear end is plugged into the handle 5 and can rotate with the handle 5 (the circuit breaker body 1 and the operating mechanism body 2 are linked through the square shaft 6); the driving mechanism is a reduction motor 7 installed in the housing 201 and its motor shaft points to the right side of the housing 201. The reduction motor 7 and the driving member 8 are arranged on the same axis.

[0046] like Figure 4 As shown, the left side of the driving member 8 is installed on the motor shaft of the reduction motor 7 through the mounting hole 801 set thereon and can rotate with the motor shaft; a driving groove is set on the outer periphery of the driving member 8; a reflective block mounting hole is set in the driving groove. The driving member 8 is a cylindrical structure. The driving groove includes groove 1 803, groove 2 804, groove 3 805, and groove 4 806 which are respectively concavely set on the outer periphery of the driving member 8; Figure 4 As shown in the figure located on the upper side, the groove 803 is arranged obliquely from left to right around the front side of the outer periphery of the driving member 8; Figure 4 As shown in the figure located at the lower side, the second groove 804 is in a V-shaped structure and is arranged on the rear side of the outer periphery of the driving member 8. The width of the second groove 804 gradually increases from front to back around the outer periphery of the driving member 8; Figure 4 As shown in the figure located on the upper side, the groove three 805 is arranged on the front side of the outer periphery of the driving member 8, and is composed of a groove body arranged horizontally and a groove body arranged vertically around the outer periphery of the driving member 8 and connected to each other. The vertical groove body of the groove three 805 is located on the right side of the outer periphery of the driving member 8; Figure 4 As shown in the figure located at the lower side, the groove 4 806 is arranged at the rear side of the outer periphery of the driving member 8, and is composed of a groove body arranged horizontally and a groove body arranged vertically around the outer periphery of the driving member 8 and connected to each other. The vertical groove body of the groove 4 806 is located on the left side of the outer periphery of the driving member 8; the groove opening of the vertical groove body of the groove 4 806 is connected to the groove opening on the left side of the rear end of the groove 2 804; Figure 4 As shown in the figure located on the upper side, the front end notch of groove 2 804 and the left end notch of groove 1 803 intersect and communicate at the left end notch of the horizontal groove body of groove 3 805, and a reflective block mounting hole 1 807 is provided at the intersection; Figure 4 As shown in the lower figure, the right notch at the rear end of groove 2 804 intersects and connects with the right notch at the right end of groove 1 803 and the notch of the vertical groove body of groove 3 805 at the right notch at the horizontal groove body of groove 4 806, and a reflective block mounting hole 2 808 is provided at the intersection.

[0047] like Figure 5 As shown, the switching member 9 is installed in the housing 201 by means of a guide bar 1 902 and a guide bar 2 904 (slidable left and right) which are arranged on its front and rear sides and respectively inserted into the inner slide grooves 302 of the bottom shell 3 and the surface cover 4; a switching column 1 901 which is engaged in the driving grooves (including groove 1 803, groove 2 804, groove 3 805, and groove 4 806) is provided at the bottom of the switching member 9. The switching column 1 901 can move along the driving grooves under the drive of the driving member 8 and drive the switching member 9 to move left and right along the slide groove 302. The top of the switching member 9 protrudes upward (forming a triangular plate-like structure) and a switching column 2 903 is provided on both sides of the front and rear of the protrusion.

[0048] like Figure 6As shown, the separating and combining rod 10 is sleeved on the front end of the square shaft 6 through a square hole 1003 arranged on the rear side of its rod body 1001; a separating and combining rod groove 1002 is provided on the front side of the top of the rod body 1001 of the separating and combining rod 10; a separating and combining rod upper and lower arms 1004 (composed of two parallel arm plates) are provided at the bottom of the rod body 1001 of the separating and combining rod 10, and an inverted U-shaped groove sleeved on the reversing column 2 is provided at the bottom of the separating and combining rod upper and lower arms 1004 (the two arm plates of the separating and combining rod upper and lower arms 1004 are respectively located on both sides of the top protrusion of the reversing member 9 and are movably clamped on the reversing column 2 903 through the inverted U-shaped groove thereon).

[0049] like Figure 3 As shown, the reflective block 11 is composed of multiple blocks and is respectively installed in the reflective block installation holes (including the reflective block installation hole 1 807 and the reflective block installation hole 2 808 ) and the separation and combination rod groove 1002 .

[0050] like Figure 1 As shown, the control monitoring module 204 is arranged in the housing 201 and is located in front of the opening and closing operating mechanism 202 (and the leakage tripping device 203). A photoelectric sensor 18 is provided on the control monitoring module 204 corresponding to the reflective block 11. The control monitoring module 204 controls the start and stop of the reduction motor 7 through the light signal reflected by the reflective block 11 at different positions received by the photoelectric sensor 18.

[0051] There are four photoelectric sensors 18, of which two photoelectric sensors 18 are arranged one by one under the driving member 8 and correspond to the positions of the reflective block mounting hole 1 807 and the reflective block mounting hole 2 808 (when the driving member 8 rotates a certain angle, the reflective blocks 11 in the reflective block mounting hole 1 807 and the reflective block mounting hole 2 808 are aligned with the photoelectric sensors 18); the other two photoelectric sensors 18 are respectively arranged in front of the position of the separation rod groove 1002 when the separation rod 10 is in the closing position or the opening position (that is, when the separation rod 10 is rotated to the closing position, the separation rod groove 1002 is facing a photoelectric sensor 18 in front of it, and when the separation rod 10 is rotated to the opening position, the separation rod groove 1002 is also facing a photoelectric sensor 18 in front of it).

[0052] like Figure 7 As shown, when the circuit breaker is in the open state, the reflective block 11 in the reflective block mounting hole 808 rotates with the driving member 8 to a position facing the photoelectric sensor 18 on the lower right side of the driving member 8 (at this time, the reversing column 901 is located at the leftmost end of the driving member 8 and just above the reflective block mounting hole 807, that is, the reflective block mounting hole 807 rotates to the top with the driving member 8 and is located below the reversing column 901), and at the same time, the opening and closing rod groove 1002 faces the photoelectric sensor 18 on the front right side of the opening and closing rod 10 (the opening and closing rod 10 is biased to the right).

[0053] like Figure 8 As shown, when the circuit breaker is in the closed state, the reflective block 11 in the reflective block mounting hole 807 rotates with the driving member 8 to a position directly opposite to the photoelectric sensor 18 on the left side of the lower part of the driving member 8 (at this time, the reversing column 1 901 is located at the rightmost end of the driving member 8 and just above the reflective block mounting hole 808, that is, the reflective block mounting hole 808 rotates to the top with the driving member 8 and is located directly below the reversing column 1 901), and at the same time, the opening and closing rod groove 1002 is directly opposite to the photoelectric sensor 18 on the left side in front of the opening and closing rod 10 (the opening and closing rod 10 is biased to the left).

[0054] like Fig. 9 As shown, when the circuit breaker is in the remote locking state, the reflective block 11 in the reflective block mounting hole 1 807 and the reflective block 11 in the reflective block mounting hole 2 808 are not facing the photoelectric sensor 18 at the bottom of the driving member 8, the reversing column 1 901 is located at the leftmost end of the driving member 8, and the separation rod groove 1002 is facing the photoelectric sensor 18 on the right side in front of the separation rod 10 (the separation rod 10 is biased to the right).

[0055] Fig.10 This is an expanded view of the outer surface of the driving member 8, Fig.10 In the inner figure, A1 and B1 are the positions of the reversing column 901 when the switch is closed, and A2 and B2 are the positions of the reversing column 901 when the switch is open; the sliding track of the reversing column 901 in the driving groove of the driving member 8 is shown in FIG. Fig.10 As shown in the inner diagram b; the automatic closing trajectory in the open state is as follows Fig.10 As shown in the inner c figure; the automatic opening trajectory in the closed state is as follows Fig.10 As shown in the inner figure d; in the open state, the manual closing and automatic opening trajectory is as follows Fig.10 As shown in the inner figure e; in the closed state, the manual opening and automatic closing trajectory is as follows Fig.10 As shown in the figure f.

[0056] The movement process is:

[0057] When the switch is closed automatically, it is in the open state (such as Figure 7 As shown in the state, the reduction motor 7 receives the closing command from the control monitoring module 204, and the motor shaft drives the driving member 8 to rotate in the clockwise direction through the mounting hole 801. The reversing column 1 901 is pushed by the driving groove of the driving member 8 and the trajectory moves from A2 to B1. The guide bar 1 902 and the guide bar 2 904 move linearly to the right along the slide groove 302 of the shell 201 (bottom shell 3, surface shell 4). The reversing column 2 903 drives the upper and lower arms 1004 of the separation and combination rod to make the separation and combination rod 10 rotate counterclockwise. The separation and combination rod 10 drives the handle 5 on the circuit breaker through the square shaft 6 to reach the closing position (as shown in the state shown in the state), and the reduction motor 7 receives the closing command from the control monitoring module 204, and the motor shaft drives the driving member 8 to rotate in the clockwise direction. Figure 8 The photoelectric sensor 18 placed on the control monitoring module 204 uploads a signal (such as Figure 8As shown, at this time, the reflective block 11 in the reflective block mounting hole 807 rotates with the driving member 8 to the position facing the photoelectric sensor 18 on the left side of the lower part of the driving member 8, and at the same time, the separation and combination rod groove 1002 faces the photoelectric sensor 18 on the left side in front of the separation and combination rod 10. The two photoelectric sensors 18 convert the sensed light signals into electrical signals and send them to the control monitoring module 204. The control monitoring module 204 controls the reduction motor 7 to stop rotating and completes the closing movement process. The circuit breaker has a locking feature in this position, and the operating mechanism driving component is in an idle state, without any force, and the state is stable. Fig.10 The inner figure c shows the movement trajectory of the reversing column 901 on the driving member 8.

[0058] When the switch is in the closed state (such as Figure 8 As shown in the state, the reduction motor 7 receives the opening command from the control monitoring module 204, and the motor shaft drives the driving member 8 to rotate in the clockwise direction through the mounting hole 801. The reversing column 1 901 is pushed by the driving groove of the driving member 8 and the trajectory moves from B1 to A2. The guide bar 1 902 and the guide bar 2 904 move linearly to the left along the slide groove 302 of the shell 201 (bottom shell 3, surface shell 4). The reversing column 2 903 drives the upper and lower arms 1004 of the separation and combination rod to make the separation and combination rod 10 rotate clockwise. The separation and combination rod 10 drives the handle 5 on the circuit breaker through the square shaft 6 to reach the opening position (as shown in the state shown in the state), and the reduction motor 7 receives the opening command from the control monitoring module 204, and the motor shaft drives the driving member 8 to rotate in the clockwise direction. Figure 7 The photoelectric sensor 18 placed on the control monitoring module 204 uploads a signal (such as Figure 7 As shown, the reflective block 11 in the reflective block mounting hole 808 rotates with the driving member 8 to the position facing the photoelectric sensor 18 on the lower right side of the driving member 8, and at the same time, the separation rod groove 1002 faces the photoelectric sensor 18 on the front right side of the separation rod 10. The two photoelectric sensors 18 convert the sensed light signals into electrical signals and send them to the control monitoring module 204). The control monitoring module 204 controls the reduction motor 7 to stop rotating and completes the opening movement process; the movement direction during automatic opening is opposite to that of automatic closing, the movement direction of the reduction motor remains unchanged, and other moving parts move in the opposite direction. After opening, the circuit breaker and the operating mechanism are in a stable state. Fig.10 The inner figure d shows the motion trajectory of the reversing column 901 on the driving member 8.

[0059] When the switch is closed manually and opened automatically, the switch is in the open state. The circuit breaker handle 5 is manually pulled to close the circuit. The handle 5 drives the opening and closing rod 10 to rotate counterclockwise through the square shaft 6. The upper and lower arms 1004 of the opening and closing rod force the reversing column 2 903 to drive the reversing member 9 to move linearly to the left along the slide groove 302 in the housing 201, so that the reversing column 1 901 reaches the A1 position from A2. At this time, the circuit breaker is in the closed state (such as Figure 8As shown in the state, the reduction motor 7 receives the opening command from the control monitoring module 204, the reduction motor 7 drives the driving member 8 to rotate clockwise, the reversing member 9 drives the opening and closing rod 10 to rotate clockwise, and the opening and closing rod 10 drives the circuit breaker handle 5 to the opening position (such as Figure 7 Similarly, the photoelectric sensor 18 receives the position signal and transmits it to the control monitoring module 204, and the control monitoring module 204 controls the reduction motor 7 to stop rotating, completing the opening movement. Fig.10 The inner figure e shows the motion trajectory of the reversing column 901 in the driving groove of the driving member 8.

[0060] When the manual opening circuit breaker is automatically closed, its movement direction is opposite to the manual closing circuit breaker. The movement direction of the motor remains unchanged, and other moving parts move in the opposite direction. Fig.10 The inner figure f shows the motion trajectory of the reversing column 901 on the driving member 8.

[0061] Embodiment 2:

[0062] The difference between this embodiment and the first embodiment is that:

[0063] like Fig.11 , Fig.12 As shown, the leakage tripping device 203 is installed in the housing 201, including a tripping coil 15, a linkage rod 12, a reset torsion spring 14, a reset spring 16, a moving iron core 13, and a circuit breaker tripping linkage shaft 17; the tripping coil 15 is installed in the housing 201 and is located on the right side of the opening and closing operating mechanism 202; the linkage rod 12 is located between the tripping coil 15 and the opening and closing operating mechanism 202, a column 1203 is provided on the front side of the top of the linkage rod 12, a column 2 1205 is provided on the front side of the bottom of the linkage rod 12, a buckle 1204 is provided on the right end of the front side of the linkage rod 12, a linkage rod waist-shaped hole 1206 is provided on the left side of the front side of the linkage rod 12, and an axial hole 1202 is provided in the column 1203, and the linkage rod 12 is connected to the linkage rod 12 through the axial The hole 1202 is sleeved on the bottom shell column 304 preset on the inner side of the bottom shell 3; the reset torsion spring 14 is sleeved on the column 1 1203, the torsion spring arm 1 of the reset torsion spring 14 is clamped on the inner side of the bottom shell 3, and the torsion spring arm 2 is placed at the buckle 1204; the reset spring 16 is arranged in the middle inner hole of the tripping coil 15 (the right side is against the left side of the limiting rib 306); the left side of the moving iron core 13 is sleeved on the column 2 1205 through the moving iron core waist hole set thereon, and the core rod on the right side of the moving iron core 13 extends into the middle inner hole of the tripping coil 15 and contacts the reset spring 14; one end of the circuit breaker tripping linkage shaft 17 is installed in the circuit breaker body 1, and the other end passes through the bottom shell 3 and extends into the shell 201 and is placed in the linkage rod waist hole 1206.

[0064] When the control monitoring module 204 detects that there is a leakage condition in the line, the control monitoring module 204 energizes the tripping coil 15, and the moving iron core 13 moves to the right under the action of magnetic force (compressing the reset spring 16). At the same time, the moving iron core 13 drives the linkage rod 12 to move counterclockwise. At this time, the reset torsion spring 14 also stores energy in this process. The linkage rod 12 rotates and drives the circuit breaker tripping linkage shaft 17 to move counterclockwise through the linkage rod waist hole 1206 thereon, thereby using the circuit breaker to trip; when the operation is completed, the control monitoring module 204 stops supplying power to the tripping coil 15, and the moving iron core 13 loses its magnetic effect. At this time, the reset torsion spring 16 releases energy, driving the linkage rod 12 to reset, and the moving iron core 13 and the circuit breaker tripping linkage shaft 17 also return to their initial positions under the action of their respective spring forces.

[0065] Embodiment three:

[0066] The difference between this embodiment and the second embodiment is that:

[0067] like Fig.11 As shown, a linkage rod rib is provided on the lower left part of the front side of the linkage rod; correspondingly, a locking strip is provided on the right side of the driving member, which can drive the linkage rod rib to rotate and then drive the circuit breaker tripping linkage shaft to rotate to trip the circuit breaker.

[0068] like Fig. 9 As shown, during remote locking, after the locking bar 802 of the driving member 8 reaches the locking position driven by the reduction motor 7, the separation rod groove 1002 is directly opposite to the photoelectric sensor 18 on the right side in front of the separation rod 10. The photoelectric sensor 18 converts the light signal reflected by the reflective block 11 in the separation rod groove 1002 sensed into an electrical signal and sends it to the control monitoring module 204. After receiving the signal from the photoelectric sensor 18, the control monitoring module 204 controls the reduction motor 7 to stop rotating. During the process of the reduction motor 7 driving the locking bar 802 to rotate, the locking bar 802 pushes the linkage rod rib 1201 to rotate, and the linkage rod waist-shaped hole 1206 drives the circuit breaker tripping linkage shaft 17 to put the circuit breaker in a tripping state. At this time, the operation of the circuit breaker handle 5 is in a failed state.

[0069] It should be noted that the terms "comprises", "includes" or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0070] The protection scope of the present invention is not limited to the technical solutions disclosed in the specific implementation methods. Any modifications, equivalent replacements, improvements, etc. made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. An electric operating mechanism for a miniature circuit breaker, comprising an operating mechanism body mounted and fixed on a circuit breaker body; the operating mechanism body comprises a housing, a switching operating mechanism, a leakage tripping device for leakage protection of the circuit breaker, and a control monitoring module installed in the operating mechanism body and used to control the start and stop of a driving mechanism in the operating mechanism body; the housing is hollow inside and is composed of a bottom shell and a cover that can be detachably assembled together; slide grooves are symmetrically arranged on the inner sides of the bottom shell and the cover; the characteristics are: The switch-on and switch-off operating mechanism comprises a handle, a square shaft, and a driving mechanism, a driving member, a reversing member, a switch-on and switch-off rod, and a reflective block, which are respectively arranged in a housing; The handle is rotatably mounted in the circuit breaker body; The front end of the square shaft passes through the bottom shell and extends into the housing, and the rear end is plugged into the handle and can rotate with the handle; The driving mechanism is a reduction motor installed in the housing and its motor shaft points to the right side of the housing; The left side of the driving member is installed on the motor shaft of the reduction motor through the mounting hole provided thereon and can rotate with the motor shaft; a driving groove is provided on the outer periphery of the driving member; a reflective block mounting hole is provided in the driving groove; the driving groove includes groove 1, groove 2, groove 3, and groove 4 which are respectively concavely provided on the outer periphery of the driving member; the groove 1 is obliquely provided from left to right around the front side of the outer periphery of the driving member; the groove 2 is V-shaped and provided on the rear side of the outer periphery of the driving member, and the width of the groove 2 is from front to back The groove 3 is arranged at the front side of the outer periphery of the driving member, and is composed of a groove body which is arranged horizontally and vertically around the outer periphery of the driving member and is connected to each other, and the vertical groove body of the groove 3 is located on the right side of the outer periphery of the driving member; the groove 4 is arranged at the rear side of the outer periphery of the driving member, and is composed of a groove body which is arranged horizontally and vertically around the outer periphery of the driving member and is connected to each other, and the groove opening of the vertical groove body of the groove 4 is connected to the groove opening on the left side of the rear end of the groove 2, and the vertical groove body of the groove 3 is located on the left side of the outer periphery of the driving member; The reversing member is installed in the housing through a guide bar 1 and a guide bar 2 which are arranged on the front and rear sides thereof and are respectively inserted into the inner slide grooves of the bottom shell and the cover; a reversing column 1 which is engaged in the driving groove is arranged at the bottom of the reversing member, and the reversing column 1 can move along the driving groove under the drive of the driving member and drive the reversing member to move left and right along the slide groove; the top of the reversing member protrudes upward and a reversing column 2 is arranged on both sides of the protrusion in front and behind; The splitting lever is sleeved on the front end of the square shaft through a square hole arranged on the rear side of the lever body; a splitting lever groove is arranged on the front side of the top of the splitting lever body; a splitting lever upper and lower arms are arranged at the bottom of the splitting lever body, and an inverted U-shaped groove sleeved on the second reversing column is arranged at the bottom of the splitting lever upper and lower arms; The reflective blocks are multiple and are respectively installed in the reflective block installation holes and the separation and combination rod grooves; The control and monitoring module is arranged in the shell and located in front of the opening and closing operating mechanism. A photoelectric sensor is provided on the control and monitoring module corresponding to the reflective block. The control and monitoring module controls the start and stop of the reduction motor through the light signals reflected by the reflective blocks at different positions received by the photoelectric sensor.

2. The electric operating mechanism for a miniature circuit breaker according to claim 1, characterized in that: The leakage tripping device is installed in the housing, including a tripping coil, a linkage rod, a reset torsion spring, a reset spring, a moving iron core, and a circuit breaker tripping linkage shaft; the tripping coil is installed in the housing and is located on the right side of the opening and closing operating mechanism; the linkage rod is located between the tripping coil and the opening and closing operating mechanism, a column one is provided on the front side of the top of the linkage rod, a column two is provided on the front side of the bottom of the linkage rod, a buckle is provided on the right end of the front side of the linkage rod, a linkage rod waist-shaped hole is provided on the left side of the front side of the linkage rod, an axial hole is provided in the column one, and the linkage rod is sleeved through the axial hole On the bottom shell column preset on the inner side of the bottom shell; the reset torsion spring is sleeved on the column body one, the torsion spring arm one of the reset torsion spring is clamped on the inner side of the bottom shell, and the torsion spring arm two is placed at the buckle; the reset spring is arranged in the middle inner hole of the tripping coil; the left side of the moving iron core is sleeved on the column body two through the waist-shaped hole of the moving iron core arranged thereon, and the core rod on the right side of the moving iron core extends into the middle inner hole of the tripping coil and contacts the reset spring; one end of the circuit breaker tripping linkage shaft is installed in the circuit breaker body, and the other end passes through the bottom shell and extends into the shell body and is then placed in the waist-shaped hole of the linkage rod.

3. The electric operating mechanism for a miniature circuit breaker according to claim 2, characterized in that: A linkage rod rib is provided on the lower left part of the front side of the linkage rod; correspondingly, a locking strip is provided on the right side of the driving member, which can drive the linkage rod rib to rotate and then drive the circuit breaker tripping linkage shaft to rotate to trip the circuit breaker.

4. The electric operating mechanism for a miniature circuit breaker according to claim 1, characterized in that: The opening and closing operating mechanism and the leakage tripping device are placed in a straight line in the housing.

5. The electric operating mechanism for a miniature circuit breaker according to claim 1, characterized in that: The reduction motor and the driving member are arranged on the same axis.

6. The novel electric operating mechanism for a miniature circuit breaker according to any one of claims 1 to 5, characterized in that: The driving member is in a cylindrical structure.

7. The electric operating mechanism for a miniature circuit breaker according to claim 6, characterized in that: The front end slot of groove two and the left end slot of groove one intersect and connect at the left end slot of the horizontal groove body of groove three, and a reflective block mounting hole one is provided at the intersection; the right side slot at the rear end of groove two and the right end slot of groove one and the slot of the vertical groove body of groove three intersect and connect at the right end slot of the horizontal groove body of groove four, and a reflective block mounting hole two is provided at the intersection.

8. The electric operating mechanism for a miniature circuit breaker according to claim 7, characterized in that: There are four photoelectric sensors, two of which are correspondingly arranged below the reflective block mounting hole 1 and the reflective block mounting hole 2 on the driving member; the other two photoelectric sensors are correspondingly arranged directly in front of the position of the opening and closing rod groove when the opening and closing rod is in the closing position or the opening position.

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