Reclosing module and small reclosing circuit breaker

Abstract

The utility model discloses a reclosing module and a miniature reclosing circuit breaker, and belongs to the field of circuit breaker structure design. The reclosing module comprises a shell, and a circuit board assembly, a transmission handle, a motor driving mechanism, an electromagnetic driving mechanism and a driving rod which are arranged in the shell; the transmission handle is rotatably arranged in the shell and is in linkage connection with a handle of the circuit breaker module; the driving rod is movably arranged in the shell and is provided with two stress ends and a tripping driving part, and the tripping driving part is arranged close to one stress end; the two stress ends correspond to the output end of the motor driving mechanism and the output end of the electromagnetic driving mechanism respectively, and the tripping driving part extends out of a through hole in the side face of the shell and is used for triggering the circuit breaker module to trip; the electromagnetic driving mechanism and the motor driving mechanism are electrically connected with the circuit board assembly. According to the utility model, the electromagnetic driving mechanism is integrated in the reclosure to realize the tripping protection of the circuit breaker, the internal space of the circuit breaker module is saved, and the reclosure has good practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of circuit breaker, especially to a reclosing module and small reclosing circuit breaker. BACKGROUND

[0002] The current development trend of small circuit breaker is to have reclosing function in addition to traditional manual switching and overcurrent overload automatic tripping function, so as to realize automatic or remote control of circuit breaker switching. The existing small reclosing circuit breaker usually includes a reclosing module and at least one circuit breaker module, the switching of the circuit breaker module is controlled by the reclosing module, and the reclosing module is usually provided with a motor driving mechanism. An electromagnetic driving mechanism is arranged in each circuit breaker module, and the circuit breaker module can be tripped and switched off by the electromagnetic driving mechanism when the main circuit current is abnormal. However, the arrangement of the electromagnetic driving mechanism in the circuit breaker module will affect the internal layout of the circuit breaker module to some extent. Therefore, the structure of the existing small reclosing circuit breaker still needs to be improved. SUMMARY

[0003] The utility model aims at providing a reclosing module and a small reclosing circuit breaker using the same, which integrates the electromagnetic driving mechanism in the reclosing module to realize tripping protection of the circuit breaker, thereby saving the internal space of the circuit breaker module.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] In a first aspect, the utility model provides a reclosing module, which includes a shell, a circuit board assembly, a transmission handle, a motor driving mechanism, an electromagnetic driving mechanism and a driving rod arranged in the shell. The transmission handle is rotatably arranged in the shell and is connected with the handle of the circuit breaker module. The driving rod is movably arranged in the shell and has two force receiving ends and a tripping driving part. The tripping driving part is arranged close to one of the force receiving ends. The two force receiving ends correspond to the output end of the motor driving mechanism and the output end of the electromagnetic driving mechanism respectively. The tripping driving part is extended from the hole in the side of the shell and is used to trigger the tripping of the circuit breaker module. The electromagnetic driving mechanism and the motor driving mechanism are electrically connected with the circuit board assembly.

[0006] The utility model is further provided as follows: the motor driving mechanism includes a motor, a transmission gear and an output gear. The motor shaft of the motor is fixed with a worm gear. The worm gear is drivingly connected with the output gear through the transmission gear. The output gear is coaxially sleeved with the transmission handle. A transmission block is arranged on the side of the transmission handle. A driving protrusion is protruded from one side of the output gear. The transmission block and one of the force receiving ends are respectively arranged on the two sides of the driving protrusion. When the output gear rotates forward and reversely, the transmission block and the corresponding force receiving end are respectively pushed by the driving protrusion.

[0007] The utility model further sets up: the middle part of drive rod is rotatablely connected with the casing through the connecting shaft, and two stress ends are respectively located at the two sides of the connecting shaft.

[0008] The utility model further sets up: the electromagnetic drive mechanism includes electromagnetic subassembly and the top rod driven by electromagnetic subassembly, and the top rod end corresponds to the corresponding stress end.

[0009] The utility model further sets up: the casing side surface is equipped with the slot with the corresponding position of motor, and the motor side surface is embedded in the slot.

[0010] The utility model further sets up: be equipped with the curved crank on drive rod, the crank passes around the mounting shaft of transmission gear.

[0011] The utility model further sets up: the casing is equipped with the limiting block of the movable range stop of drive rod.

[0012] The utility model further sets up: the casing is by the splicing of front shell, middle shell and rear shell, the middle shell has through -going part and baffle part, and the through -going part communicates the front shell and rear shell;The electromagnetic drive mechanism and motor drive mechanism are installed between the baffle part and the front shell.

[0013] The utility model further sets up: the circuit board subassembly includes the first circuit board, second circuit board and third circuit board of interval setting along front -back direction;First circuit board, second circuit board and third circuit board are electrically connected through the needle terminal between;The first circuit board is fixed in the inside of front shell and opposite with the through -going part, and the second circuit board and third circuit board are fixed on the side of middle shell towards rear shell, are equipped with the first support column and second support column that protrude to rear shell direction on the baffle part, the protruding height of first support column is lower than the protruding height of second support column, and the second circuit board is supported to first support column and is fixed through screw, is equipped with the through -hole for second support column to pass through on the second circuit board, and the third circuit board is supported on second support column and is fixed through screw.

[0014] Secondly, the utility model provides small -size reclosing circuit breaker, including the reclosing module and at least one circuit breaker module of parallel arrangement, the reclosing module adopts any reclosing module described above, the transmission handle is connected with the handle coaxially of circuit breaker module, the current transformer is equipped with in the circuit breaker module on main circuit, and the current transformer is electrically connected with circuit board subassembly.

[0015] The utility model has following beneficial effect: the utility model discloses structure is optimized, and on the basis of the motor drive mechanism that the original reclosing module has, adds electromagnetic drive mechanism, and motor drive mechanism and electromagnetic drive mechanism can all be through drive driving rod activity and then control circuit breaker module tripping, can not need to set up electromagnetic drive mechanism in circuit breaker module interior, thereby saves circuit breaker module interior space, is favorable to optimizing circuit breaker module internal layout, electromagnetic drive mechanism and motor drive mechanism all with circuit board subassembly electricity is connected, namely the action of electromagnetic drive mechanism and motor drive mechanism all is controlled by circuit board subassembly. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the perspective view of reclosing module in the utility model;

[0017] Figure 2 It is Figure 1 It is the structural schematic diagram after part component of reclosing module shown in the utility model is given up;

[0018] Figure 3 It is the structure diagram of driving rod, motor drive mechanism and electromagnetic drive mechanism in the utility model when assembling;

[0019] Figure 4 It is Figure 2 It is the structural schematic after removing transmission gear on the basis;

[0020] Figure 5 It is the explosion view of reclosing module in the utility model;

[0021] Figure 6 It is the perspective view of shell in the utility model;

[0022] Figure 7 It is the structure diagram of reclosing module after removing rear shell in the utility model;

[0023] Figure 8 It is the structural schematic of small reclosing circuit breaker in the utility model.

[0024] Marked in the drawing: 1, shell; 12, front shell; 13, middle shell; 131, through part; 132, partition part; 133, first support column; 134, second support column; 14, rear shell; 15, slot; 16, limit block; 2, driving rod; 21- connecting shaft; 22, force end; 23, tripping drive part; 24, crank arm; 3, transmission handle; 31, transmission block; 4, electromagnetic drive mechanism; 41, top rod; 5- motor drive mechanism; 51, motor; 52, transmission gear; 54, output gear; 55, worm; 56, driving protrusion; 6- circuit board subassembly; 61, first circuit board; 62, second circuit board; 63, third circuit board; 7, needle terminal; 8, circuit breaker module; 81, handle. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those of ordinary skill in the art without any creative work belong to the protection scope of the utility model.

[0026] Embodiment 1

[0027] The reclosing module in the embodiment comprises a shell 1, and a circuit board assembly 6, a transmission handle 3, a motor driving mechanism 5, an electromagnetic driving mechanism 4 and a driving rod 2 arranged in the shell 1. Figures 1 to 7 The transmission handle 3 is rotatably arranged in the shell 1 and is connected with the handle 81 of the circuit breaker module 8 in linkage. When a plurality of circuit breaker modules 8 are arranged, the handle 81 of each circuit breaker module 8 is connected and can act synchronously. The driving rod 2 is movably arranged in the shell 1 and has two force receiving ends 22 and a tripping driving part 23. The tripping driving part 23 is arranged close to one of the force receiving ends 22. When the force receiving end 22 is forced, the transmission distance of the force can be reduced due to the close distance, so that the tripping driving part 23 can act faster. The two force receiving ends 22 correspond to the output end of the motor driving mechanism 5 and the output end of the electromagnetic driving mechanism 4 respectively. The tripping driving part 23 is extended from the through hole on the side of the shell 1 and is used to actuate the tripping of the circuit breaker module. On the basis of the motor driving mechanism 5 possessed by the original reclosing module, the electromagnetic driving mechanism 4 is additionally arranged. The motor driving mechanism 5 and the electromagnetic driving mechanism 4 can both drive the driving rod 2 to move and further control the tripping of the circuit breaker module. The electromagnetic driving mechanism does not need to be arranged inside the circuit breaker module, so that the internal space of the circuit breaker module is saved and the internal layout of the circuit breaker module is optimized. The electromagnetic driving mechanism 4 and the motor driving mechanism 5 are electrically connected with the circuit board assembly 6, that is, the actions of the electromagnetic driving mechanism 4 and the motor driving mechanism 5 are controlled by the circuit board assembly 6.

[0028] Referring to Figures 2 to 4The motor driving mechanism 5 includes a motor 51, transmission gears 52, and an output gear 54. The number of transmission gears 52 can be one, two, or another number. The motor 51 is fixed on the motor shaft of the motor 51. The worm 55 is in transmission connection with the output gear 54 through the transmission gears 52. When the worm 55 rotates with the motor shaft, the output gear 54 is driven to rotate through the transmission gears 52. The output gear 54 is coaxially sleeved with the transmission handle 3. The transmission block 31 is arranged on the side of the transmission handle 3. The output gear 54 protrudes with a driving protrusion 56 on one side. The transmission block 31 and one force receiving end 22 are respectively arranged on the two sides of the driving protrusion 56. When the motor driving mechanism 5 drives the output gear 54 to rotate forward, the driving protrusion 56 applies a pushing force to the transmission block 31, thereby driving the transmission handle 3 to rotate and further driving the handle 81 of the circuit breaker module 8 to operate, so as to control the circuit breaker to close. When the motor driving mechanism 5 drives the output gear 54 to rotate reversely, the driving protrusion 56 applies a pushing force to one force receiving end 22 of the driving rod 2, thereby driving the circuit breaker module to trip through the trip driving part 23, so as to control the circuit breaker to open. In the state that the circuit breaker module is closed, the electromagnetic driving mechanism is controlled to operate, thereby applying a pushing force to the other force receiving end 22, thereby driving the circuit breaker module to trip through the trip driving part 23, so as to control the circuit breaker to open. Therefore, the motor driving mechanism 5 and the electromagnetic driving mechanism can both control the circuit breaker module to trip and open.

[0029] With reference to Figure 2 and Figure 4 , the middle part of the driving rod 2 is rotatably connected with the shell 1 through the connecting shaft 21. The two force receiving ends 22 are respectively arranged on the two sides of the connecting shaft 21, so that the driving rod 2 can rotate around the connecting shaft 21 to realize installation, which is convenient.

[0030] With reference to Figure 2 and Figure 4 , the electromagnetic driving mechanism 4 includes an electromagnetic assembly and a top rod 41 driven by the electromagnetic assembly. The electromagnetic assembly generally includes a magnetic yoke, a framework, an electromagnetic coil, an iron core, a counter-force spring, and the like. When the electromagnetic coil is powered, the electromagnetic assembly generates a force on the iron core. When the electromagnetic coil is powered off, the force on the iron core disappears. The structure belongs to the prior art. The end of the top rod 41 corresponds to the corresponding force receiving end 22. When the top rod 41 is driven to move by the electromagnetic assembly, a pushing force is applied to the force receiving end 22, thereby driving the trip driving part 23 to drive the circuit breaker module to trip.

[0031] With reference to Figure 1 , Figure 2 and Figure 4 , the shell 1 is provided with a slot 15 at a position corresponding to the motor 51 on the side. The side of the motor 51 is embedded in the slot 15. By embedding a part of the motor 51 in the slot 15, the thickness dimension of the shell 1 of the reclosing module can be reduced, and the overall structure is compact.

[0032] With reference to Figure 3 , the driving rod 2 is provided with a curved crank 24, which passes around the mounting shaft of the transmission gear 52, so as to avoid interference of the mounting position.

[0033] With reference to Figure 4 , the housing 1 is provided with a limiting block 16 for limiting the movement range of the driving rod 2. By arranging the limiting block 16, the movement range of the driving rod 2 can be limited, and the limiting block 16 can prevent the driving rod 2 from losing control due to too large movement range. When the driving rod 2 moves to the limit position, it abuts against the limiting block 16, thereby playing a supporting and limiting role.

[0034] With reference to Figures 5 to 7 , in order to facilitate assembly of the components inside the housing 1, the housing 1 is composed of a front shell 12, a middle shell 13 and a rear shell 14. The middle shell 13 has a through portion 131 and a partition portion 132. The through portion 131 connects the front shell 12 and the rear shell 14. The electromagnetic driving mechanism 4 and the motor driving mechanism 5 are limitedly arranged between the partition portion 132 and the front shell 12. Further, the circuit board assembly 6 is composed of three circuit boards, specifically, a first circuit board 61, a second circuit board 62 and a third circuit board 63 arranged along the front-rear direction. The first circuit board 61, the second circuit board 62 and the third circuit board 63 are electrically connected through pin terminals 7. The first circuit board 61 is fixed to the inner side of the front shell 12 and opposite to the through portion 131. The second circuit board 62 and the third circuit board 63 are fixed to the side of the middle shell 13 facing the rear shell 14. The first support column 133 and the second support column 134 are arranged on the partition portion 132 and protrude towards the rear shell 14. The protruding height of the first support column 133 is lower than that of the second support column 134. The second circuit board 62 is supported on the first support column 133 and fixed by screws. The third circuit board 63 is supported on the second support column 134 and fixed by screws. In this way, the three circuit boards can be arranged in layers and in order inside the housing 1, thereby saving space. Moreover, the circuit boards are connected by the pin terminals 7, thereby avoiding connection by soft wires and making the circuit structure clear.

[0035] Embodiment 2:

[0036] The small-sized reclosing circuit breaker of the present embodiment is as shown in Figure 8As shown, it comprises a reclosing module and at least one circuit breaker module 8 arranged side by side; the reclosing module adopts the reclosing module described in any of the above embodiments; the transmission handle 3 is coaxially connected with the handle 81 of the circuit breaker module 8; the circuit breaker module 8 is provided with a current transformer on the main circuit, and the current transformer is electrically connected with the circuit board assembly 6; the current of the main circuit is monitored through the current transformer; when the current of the main circuit is abnormal (such as overload), the circuit board assembly controls the electromagnetic driving mechanism 4 to act, and then controls the circuit breaker module 8 to trip and open, so as to protect the circuit; in addition, the reclosing module of the embodiment 1 is adopted in the embodiment, so it has all the advantages of the reclosing module, which will not be described here.

[0037] Finally, it should be noted that the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A reclosing module, characterized by: The application relates to a reclosing module of a circuit breaker, which comprises a shell, a circuit board assembly, a transmission handle, a motor driving mechanism, an electromagnetic driving mechanism and a driving rod arranged in the shell.

2. The recloser module of claim 1, wherein: The motor driving mechanism comprises a motor, a transmission gear and an output gear, a worm is fixed on a motor shaft of the motor, the worm is in transmission connection with the output gear through the transmission gear, the output gear is coaxially connected with the transmission handle, a transmission block is arranged on the side surface of the transmission handle, a driving protrusion is protruded from one side of the output gear, the transmission block and one force receiving end are respectively arranged on the two sides of the driving protrusion, and the transmission block and the corresponding force receiving end are respectively pushed by the driving protrusion when the output gear rotates forward and reversely.

3. The recloser module of claim 2, wherein: The middle part of the driving rod is rotatably connected with the shell through a connecting shaft, and the two force receiving ends are respectively arranged on the two sides of the connecting shaft.

4. The recloser module of claim 1, wherein: The electromagnetic driving mechanism comprises an electromagnetic assembly and a jack driven by the electromagnetic assembly, and the jack end corresponds to the corresponding force receiving end.

5. The recloser module of claim 2, wherein: A slot is arranged on the side surface of the shell corresponding to the motor, and the side surface of the motor is embedded in the slot.

6. The recloser module of claim 2, wherein: A curved crank is arranged on the driving rod, and the crank passes around the mounting shaft of the transmission gear.

7. The recloser module of claim 3, wherein: A limiting block is arranged in the shell to limit the activity range of the driving rod.

8. The recloser module of claim 1, wherein: The shell is composed of a front shell, a middle shell and a rear shell, the middle shell has a through part and a partition part, the through part connects the front shell and the rear shell, and the electromagnetic driving mechanism and the motor driving mechanism are limitedly arranged between the partition part and the front shell.

9. The recloser module of claim 8, wherein: The circuit board assembly comprises first, second and third circuit boards arranged in the front-rear direction, the first, second and third circuit boards are electrically connected through pin terminals, the first circuit board is fixed on the inner side of the front shell and corresponds to the through part, the second and third circuit boards are fixed on the side of the middle shell facing the rear shell, first and second supporting columns protruding towards the rear shell are arranged on the partition part, the protruding height of the first supporting column is lower than that of the second supporting column, the second circuit board is supported on the first supporting column and fixed through screws, a through hole is arranged on the second circuit board for the second supporting column to pass through, and the third circuit board is supported on the second supporting column and fixed through screws.

10. A compact reclosing circuit breaker comprising reclosing modules and at least one circuit breaker module arranged side by side; characterized in that: The reclosing module adopts the reclosing module in any one of claims 1 to 9, the transmission handle is coaxially connected with the handle of the circuit breaker module, a current transformer is arranged in the main circuit of the circuit breaker module, and the current transformer is electrically connected with the circuit board assembly.

Images