Auxiliary switch and frame circuit breaker

Abstract

The utility model relates to the technical field of low-voltage electric appliances, and particularly discloses an auxiliary switch and a frame circuit breaker. A microswitch of the auxiliary switch is arranged in a shell, a contact of the microswitch penetrates out of a penetrating hole of the shell to be arranged on the outer side of the shell, a push plate is arranged on the outer side of the shell and rotationally connected with the shell, an elastic piece is connected with an operating mechanism and the push plate, the operating mechanism acts to enable the push plate to rotate relative to the shell, and then a first end of the push plate triggers the contact of the microswitch. The push plate is provided with a plurality of mounting holes, and the elastic piece can be mounted in different mounting holes, so that the force required by the push plate to trigger the contact of the microswitch can be adjusted, the condition that the microswitch in each auxiliary switch is fully matched or does not need to be fully matched is met, or the requirements of different frame circuit breakers on the trigger force of the push plate are met; it is guaranteed that the push plate can reliably trigger the microswitch, the microswitch is not damaged, the requirement for operation of assembly personnel is not high, and the assembly flexibility is high.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to an auxiliary switch and a frame circuit breaker. Background Art

[0002] Frame circuit breakers distribute electrical energy and protect circuits, protecting power equipment from hazards such as overload, undervoltage, short circuit, and single-phase grounding. Auxiliary switches within frame circuit breakers function as electrical control circuits. With increasing intelligence, auxiliary switches are increasingly being used in frame circuit breakers.

[0003] In the prior art, most auxiliary switches are composed of a combination of several micro switches, gaskets, splints, and push plates. A micro switch is provided between two splints, and a gasket is provided between adjacent micro switches. The splints, gaskets, and several micro switches are fixed by a screw-nut structure. The push plate is connected to the operating mechanism by a spring, and the push plate is used to trigger the micro switch. The assembly of this auxiliary switch is inconvenient, time-consuming, and labor-intensive. In addition, the micro switches of existing auxiliary switches are all set according to full matching. A sufficient number of gaskets need to be provided to meet the installation of the micro switches when the micro switches do not need to be fully matched. When the micro switches do not need to be fully matched, there will be surplus gaskets, thereby increasing the manufacturing cost. In addition, for frame circuit breakers of different specifications, the force required for the push plate to trigger the micro switch is different. Alternatively, according to customer requirements, there is also a situation where the micro switches in the auxiliary switch do not need to be fully matched. In this case, the force required to trigger the micro switch becomes smaller. However, in the prior art, only one type of spring is configured for different application scenarios, and the force of the push plate to trigger the micro switch cannot be adjusted, thereby failing to ensure that the push plate can reliably trigger the micro switch, or the force used to trigger the micro switch is too large and may easily damage the micro switch. Utility Model Content

[0004] The purpose of the utility model is to provide an auxiliary switch and a frame circuit breaker, which realizes the modular setting of the auxiliary switch, is convenient for assembly, and has low cost. According to different application scenarios, the force of the push plate to trigger the micro switch can be adjusted to ensure that the push plate can reliably trigger the micro switch without damaging the micro switch, thereby extending the mechanical life of the auxiliary switch.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] In a first aspect, an auxiliary switch is provided, comprising:

[0007] A housing, wherein a side wall of the housing is provided with a through hole;

[0008] A micro switch is disposed in the housing, and a contact of the micro switch passes through the through hole;

[0009] a push plate disposed outside the housing, wherein a middle portion of the push plate is rotatably connected to the housing, wherein a first end of the push plate is used to trigger the contact of the micro switch, and wherein a plurality of mounting holes are provided on the push plate, wherein the plurality of mounting holes are arranged from the second end of the push plate toward the first end;

[0010] An elastic member, one end of which is connected to one of the mounting holes, and the other end of which is used to be connected to the operating mechanism.

[0011] As an optional technical solution for the above-mentioned auxiliary switch, a plurality of micro switches are arranged in sequence along the first direction in the shell, a first row of mounting holes is provided in the middle of the push plate, and the plurality of mounting holes in the first row are arranged from the second end to the first end of the push plate.

[0012] As an optional technical solution for the above-mentioned auxiliary switch, at least one mounting hole in the second column is provided on at least one side of the mounting holes in the first column on the push plate, the mounting holes in the second column are placed between two adjacent micro switches, and the multiple mounting holes in the second column are arranged from the second end to the first end of the push plate.

[0013] As an optional technical solution for the above-mentioned auxiliary switch, a plurality of partition plates are provided at intervals within the housing, and the plurality of partition plates form a plurality of mounting slots within the housing, the bottom of each mounting slot being provided with the through hole, and the micro switch being detachably provided within each mounting slot, and a first hole being provided along a first direction on a first side wall of the housing and on the partition plate, the first hole being coaxial with a second hole of the micro switch disposed within the mounting slot;

[0014] The auxiliary switch also includes a connecting shaft, the first end of the connecting shaft passes through the first hole and the second hole and abuts against the inner side of the second side wall of the shell, a fixing piece is provided on the outer side of the first side wall of the shell, and the second end of the connecting shaft is detachably connected to the fixing piece.

[0015] As an optional technical solution for the above-mentioned auxiliary switch, each of the mounting grooves is arranged to penetrate a side wall along the second direction, and a first limit member is provided at the notch of the mounting groove. The first limit member is arranged close to the other side wall of the mounting groove along the second direction, and the first limit member is configured to limit the micro switch in the third direction.

[0016] As an optional technical solution of the above-mentioned auxiliary switch, the first limiting member includes a first limiting plate, and the first limiting plate extends along the first direction; and / or

[0017] The plurality of first limiting plates and the shell are integrally formed.

[0018] As an optional technical solution for the above-mentioned auxiliary switch, along the first direction, a second limit member is provided on one of the side walls of each of the mounting grooves, the spacing between the second limit members in each two adjacent mounting grooves is the same, and the micro switch is accommodated between the second limit member and the other side wall of the mounting groove.

[0019] As an optional technical solution of the auxiliary switch, the second end of the connecting shaft is provided with a crank arm, and the crank arm is arranged at an angle to the connecting shaft;

[0020] The fixing member includes an L-shaped bent plate, one end of the bent plate is connected to the first side wall of the shell, and a fixing groove is formed between the other end of the bent plate and the first side wall of the shell, and the crank arm can be inserted into the fixing groove;

[0021] And / or, the bending plate and the shell are an integrally formed structure.

[0022] As an optional technical solution for the above-mentioned auxiliary switch, the bending plate is provided with a receiving groove on the side facing the shell, and a guide slope is provided on the side facing the notch of the fixed groove when the crank arm rotates, and the guide slope is configured to enable the crank arm to pass through the notch of the fixed groove and be placed in the receiving groove.

[0023] In a second aspect, a frame circuit breaker is provided, comprising an operating mechanism and any one of the auxiliary switches described above.

[0024] Beneficial effects of the utility model:

[0025] The utility model provides an auxiliary switch, wherein the micro switch is arranged in a shell. By setting up a shell, multiple micro switches can be installed, thereby realizing a modular design of the auxiliary switch, and the number of micro switches can be flexibly configured, which is convenient to assemble. Compared with the prior art, the number of parts set is reduced, thereby reducing the cost; the contacts of the micro switch pass through the through-hole of the shell and are placed on the outside of the shell, the push plate is placed on the outside of the shell and is rotatably connected to the shell, the elastic member connects the operating mechanism and the push plate, and the operation of the operating mechanism can cause the push plate to rotate relative to the shell, thereby causing the first end of the push plate to trigger the micro switch The switch contacts, a push plate is provided with multiple mounting holes, and the multiple mounting holes are arranged from the second end to the first end of the push plate. The elastic member can be installed in different mounting holes, and then the force required for the push plate to trigger the contacts of the micro switch can be adjusted to meet the situation where the micro switch in each auxiliary switch is fully equipped or not fully equipped, or to meet the triggering force requirements of the push plate of different frame circuit breakers, without the need to replace the elastic member, ensuring that the push plate can reliably trigger the micro switch without damaging the micro switch, extending the mechanical life of the auxiliary switch, and having low work requirements for the assembly personnel and strong assembly flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of a frame circuit breaker provided by an embodiment of the present utility model in an open state;

[0027] Figure 2 This is a structural diagram of a frame circuit breaker provided by an embodiment of the present utility model in a closed state;

[0028] Figure 3 This is an axonometric diagram of an auxiliary switch provided by an embodiment of the present utility model;

[0029] Figure 4 This is a schematic diagram of the connection structure between the auxiliary switch and the operating mechanism provided by an embodiment of the utility model;

[0030] Figure 5 This is an exploded view of the auxiliary switch provided by an embodiment of the present utility model;

[0031] Figure 6 This is a schematic structural diagram of a push plate provided by an embodiment of the present utility model;

[0032] Figure 7 This is a schematic diagram of the assembly structure of the micro switch and the housing provided by an embodiment of the utility model;

[0033] Figure 8 This is a schematic structural diagram of a housing provided by an embodiment of the present utility model;

[0034] Figure 9 This is a schematic structural diagram of a micro switch provided by an embodiment of the present utility model;

[0035] Figure 10 It is a schematic diagram of the connection structure between the connecting shaft and the housing provided by an embodiment of the present utility model.

[0036] In the picture:

[0037] 100, operating mechanism; 101, rocker arm; 102, connecting rod; 103, main shaft; 200, base;

[0038] 1. Housing; 2. Micro switch; 3. Push plate; 4. Elastic member; 5. Connecting shaft; 6. Fixing member; 7. First stopper; 8. Second stopper;

[0039] 11. Through hole; 12. Partition plate; 13. Mounting slot; 14. First hole; 15. Connecting seat; 151. Connecting hole; 16. Connecting plate; 161. Assembly hole; 17. Reinforcement rib; 18. Reinforcement seat;

[0040] 21. Contact; 22. Second hole; 23. Terminal;

[0041] 31. Mounting hole; 32. Rotating shaft;

[0042] 51. crank arm; 52. guide slope;

[0043] 61. Bending plate; 62. Fixing groove; 63. Accommodating groove. DETAILED DESCRIPTION

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0045] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0046] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0047] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0048] like Figures 1 to 5As shown, this embodiment provides an auxiliary switch for use with a frame circuit breaker. The auxiliary switch includes a housing 1, a microswitch 2, a push plate 3, and an elastic member 4. The side wall of the housing 1 is provided with a through-hole 11. The microswitch 2 is disposed within the housing 1, and the contact 21 of the microswitch 2 passes through the through-hole 11 and is positioned outside the housing 1. The push plate 3 is disposed outside the housing 1, with the middle portion of the push plate 3 rotatably connected to the housing 1. The first end of the push plate 3 is used to trigger the contact 21 of the microswitch 2. The push plate 3 is provided with a plurality of mounting holes 31, arranged in an array from the second end of the push plate 3 to the first end. One end of the elastic member 4 is connected to one of the mounting holes 31, and the other end of the elastic member 4 is connected to the operating mechanism 100.

[0049] The micro switch 2 is arranged in the housing 1. By setting up one housing 1, multiple micro switches 2 can be installed, realizing the modular design of the auxiliary switch, and the number of micro switches 2 can be flexibly configured, which is convenient for assembly. Compared with the prior art, the number of parts set is reduced, which reduces the cost; the contact 21 of the micro switch 2 passes through the through hole 11 of the housing 1 and is placed on the outside of the housing 1, the push plate 3 is placed on the outside of the housing 1 and is rotatably connected to the housing 1, and the elastic member 4 connects the operating mechanism 100 and the push plate 3. The operation of the operating mechanism 100 can cause the push plate 3 to rotate relative to the housing 1, thereby causing the first end of the push plate 3 to trigger the contact of the micro switch 2. 21. The push plate 3 is provided with a plurality of mounting holes 31, and the plurality of mounting holes 31 are arranged in an array from the second end to the first end of the push plate 3. The elastic member 4 can be installed in different mounting holes 31, thereby adjusting the force required by the push plate 3 to trigger the contact 21 of the microswitch 2. This satisfies the requirements of whether the microswitch 2 in each auxiliary switch is fully equipped or not fully equipped, or satisfies the triggering force requirements of the push plate 3 for different frame circuit breakers. This eliminates the need to replace the elastic member 4, ensuring that the push plate 3 can reliably trigger the microswitch 2 without damaging the microswitch 2, thereby extending the mechanical life of the auxiliary switch, reducing the operational requirements for the assembler, and providing greater assembly flexibility. It should be further explained that, in one case, when the auxiliary switch is assembled on different models of frame circuit breakers, the operating mechanism 100 applies different forces to the elastic member 4. Therefore, in order to ensure that the push plate 3 can reliably trigger the microswitch 2, the elastic member 4 needs to be installed in different mounting holes 31, thereby satisfying the force required by the push plate 3 to trigger the contact 21 of the microswitch 2. In another case, according to customer requirements, the micro switch 2 in the auxiliary switch is fully equipped or does not need to be fully equipped. The force required for the push plate 3 to trigger the micro switch 2 is different. Therefore, the elastic member 4 can be installed in different mounting holes 31, thereby meeting the force required for the push plate 3 to trigger the contact 21 of the micro switch 2.

[0050] Operating mechanism 100 includes a rocker arm 101, a connecting rod 102, and a main shaft 103. The other end of elastic member 4 is connected to rocker arm 101. When the frame circuit breaker is closed, main shaft 103 rotates connecting rod 102 and rocker arm 101. Connecting rod 102 moves the movable contact of the frame circuit breaker toward the stationary contact, thereby closing the circuit. At this time, rocker arm 101 stretches elastic member 4, which pulls push plate 3 to rotate. The first end of push plate 3 triggers contact 21 of microswitch 2, switching the auxiliary switch between open and closed positions.

[0051] Reference Figure 5 and Figure 6 As shown, multiple mounting holes 31 are arranged from the second end to the first end. For example, when the auxiliary switch does not need to be fully equipped with micro switches 2, the force F1 of the push plate 3 triggering the micro switch 2 decreases, and the force arm L1 of the first end of the push plate 3 triggering the micro switch 2 remains unchanged. For the same frame circuit breaker, the force F2 applied to the elastic member 4 by the operating mechanism 100 remains unchanged. According to the formula F1×L1=F2×L2, it is necessary to reduce the force arm F2 applied by the elastic member 4 on the push plate 3. Therefore, one end of the elastic member 4 is connected to the mounting hole 31 near the first end of the push plate 3. Conversely, if the force F1 of the push plate 3 triggering the micro switch 2 increases, one end of the elastic member 4 needs to be connected to the mounting hole 31 near the second end of the push plate 3.

[0052] In some embodiments, multiple microswitches 2 are arranged sequentially along a first direction within the housing 1. A first row of mounting holes 31 is provided in the middle of the push plate 3, with the multiple mounting holes 31 in the first row arranged from the second end toward the first end of the push plate 3. Depending on the force required by the push plate 3 to trigger the contacts 21 of the microswitches 2, one end of the elastic member 4 can be connected to different mounting holes 31. Providing the first row of mounting holes 31 in the middle of the push plate 3 allows for more balanced force applied by the elastic member 4 to the push plate 3, ensuring that even microswitches 2 contacting the edges of the push plate 3 can be reliably triggered.

[0053] Further, optionally, at least one second row of mounting holes 31 is provided on at least one side of the push plate 3 positioned adjacent to the first row of mounting holes 31. The second row of mounting holes 31 is positioned between two adjacent microswitches 2, and the plurality of mounting holes 31 in the second row are arranged from the second end of the push plate 3 toward the first end. If the user does not require a full complement of microswitches 2, the elastic member 4 can be connected to the mounting holes 31 on the push plate 3 near the microswitches 2, concentrating the force of the push plate 3 on the side where the microswitches 2 are located, ensuring that the microswitches 2 can be stably triggered. In actual processing, the second row of mounting holes 31 can be fabricated based on the user's requirements for installing the microswitches 2. The number of second row mounting holes 31 and their specific locations are not specifically limited herein.

[0054] The spacing between adjacent mounting holes 31 in the first column of mounting holes 31 and the second column of mounting holes 31 may be the same or different, and the number of mounting holes 31 in each column is not specifically limited.

[0055] Two connecting seats 15 are spaced apart on the outer side of the housing 1. Each connecting seat 15 has a connecting hole 151. A rotating shaft 32 is fixedly provided on the push plate 3. The two ends of the rotating shaft 32 are rotatably connected to the two connecting holes 151 of the connecting seats 15. Alternatively, a rotating shaft 32 is provided on the push plate 3, the rotating shaft 32 is rotatably connected to the push plate 3, and the two ends of the rotating shaft 32 are fixedly connected to the two connecting holes 151 of the connecting seat 15.

[0056] In the prior art, the auxiliary switch includes two clamping plates and a gasket, and multiple micro switches are arranged between the two clamping plates. A gasket is arranged between two adjacent micro switches. The clamping plates, the gasket and the micro switches are fixed by bolts and nuts, thereby fixing the micro switches between the two clamping plates. This has the problem of inconvenient assembly, time-consuming and labor-intensive, affecting the overall assembly efficiency and increasing production costs. To address this problem, Figures 7 to 10 As shown, in some embodiments, a plurality of partitions 12 are spaced apart within the housing 1, and the plurality of partitions 12 form a plurality of mounting slots 13 within the housing 1. Each mounting slot 13 has a through-hole 11 at its bottom, and a micro switch 2 is detachably mounted within each mounting slot 13. Adjacent micro switches 2 are separated by partitions 12. The provision of partitions 12 can increase the creepage distance between the plurality of micro switches 2, ensuring sufficient safety electrical distance between the micro switches 2 for safe and reliable use. The structure of the housing 1 provided in this embodiment achieves a modular design of the auxiliary switch, facilitating assembly. This replaces the prior art method of fixing the micro switch 2 by connecting two clamps and a partition with screws and nuts, facilitating assembly of the micro switch 2, saving time and effort, and improving assembly efficiency. Optionally, the partitions 12 and the housing 1 are integrally formed, reducing the number of components required and further improving assembly efficiency. Furthermore, when the micro switch 2 does not need to be fully assembled, there will be no remaining components, reducing production costs.

[0057] Along the first direction, a first hole 14 is defined on the first sidewall of the housing 1 and the partition plate 12. The first hole 14 is coaxial with the second hole 22 of the microswitch 2 positioned within the mounting slot 13. The auxiliary switch further includes a connecting shaft 5. The first end of the connecting shaft 5 passes through the first hole 14 and the second hole 22 and abuts against the inner side of the second sidewall of the housing 1. A fixing member 6 is provided on the outer side of the first sidewall of the housing 1. The second end of the connecting shaft 5 is detachably connected to the fixing member 6. The connecting shaft 5 secures the microswitch 2 within the mounting slot 13, preventing it from dislodging. The second end of the connecting shaft 5 is connected to the fixing member 6 disposed on the outer side of the housing 1, preventing the connecting shaft 5 from dislodging from the housing 1 and ensuring that the connecting shaft 5 effectively secures each microswitch 2 within the mounting slot 13. The coupling between the connecting shaft 5 and the fixing member 6 in this embodiment replaces the conventional method of securing the microswitch 2 with bolts and nuts. This solves the conventional problem of the clamping plate squeezing the microswitch 2 due to the inability to control the tightening force of the nut, causing deformation and thus affecting the switching of the microswitch 2.

[0058] Further optionally, each mounting slot 13 extends through one sidewall along the second direction, and a first stopper 7 is provided at the opening of the mounting slot 13. The first stopper 7 is positioned adjacent to the other sidewall of the mounting slot 13 along the second direction. The first stopper 7 is configured to restrict the microswitch 2 in the third direction. The mounting slot 13 extends through one sidewall along the second direction, allowing the microswitch 2 to be installed and removed from this side of the mounting slot 13, thereby improving the ease of installation of the microswitch 2. The first stopper 7 cooperates with the bottom of the mounting slot 13 to prevent the microswitch 2 from rotating about the connecting shaft 5.

[0059] The first stopper 7 includes a first stopper plate extending in a first direction. This simple structure does not interfere with the installation and removal of the microswitch 2. Optionally, each mounting slot 13 corresponds to a first stopper plate, and adjacent first stopper plates can be connected to form a single piece. Multiple first stopper plates are integrally formed with the housing 1, reducing the number of components and eliminating the need for subsequent assembly.

[0060] Different types of micro switches 2 have different structures. For example, the wiring terminals 23 of the micro switch 2 are arranged at both ends of the micro switch 2. Then, it is necessary for each installation groove 13 to be penetrated by both side walls along the second direction for the wiring terminals 23 to pass through, so as to facilitate the installation and removal of the micro switch 2 and the wiring.

[0061] A second stopper 8 is provided on one sidewall of each mounting slot 13. The spacing between the second stoppers 8 in each pair of adjacent mounting slots 13 is uniform, and a microswitch 2 is accommodated between the second stopper 8 and the other sidewall of the mounting slot 13. The second stopper 8 cooperates with the other sidewall of the mounting slot 13 to secure the microswitch 2 in the first direction, while also increasing the spacing between adjacent microswitches 2 and the creepage distance between them. This ensures a sufficient safe electrical distance between the microswitches 2, ensuring safe and reliable operation.

[0062] The second limiting member 8 includes a limiting protrusion, which is integrally formed with the side wall of the installation groove 13, thereby reducing the number of components and eliminating the need for subsequent assembly.

[0063] Optionally, a crank arm 51 is provided at the second end of the connecting shaft 5, and the crank arm 51 is arranged at an angle to the connecting shaft 5. The fixing member 6 includes an L-shaped bending plate 61, one end of the bending plate 61 is connected to the first side wall of the shell 1, and a fixing groove 62 is formed between the other end of the bending plate 61 and the first side wall of the shell 1, and the crank arm 51 can be inserted into the fixing groove 62. The first hole 14 and the second hole 22 are both circular holes, and the connecting shaft 5 is a circular shaft. After the connecting shaft 5 is passed through the first hole 14 and the second hole 22, the connecting shaft 5 is rotated so that the crank arm 51 is inserted into the fixing groove 62. The fixing groove 62 restricts the connecting shaft 5 from being separated from the shell 1, replaces the structure of bolts and nuts, and facilitates the installation and fixation of the connecting shaft 5, thereby improving assembly efficiency.

[0064] The bent plate 61 and housing 1 are integrally formed, reducing the number of components and eliminating the need for subsequent assembly. Furthermore, the bent plate 61 and housing 1 can be made of the same material, such as plastic, reducing production costs. The connecting shaft 5 can be made of either plastic or metal, without specific limitation.

[0065] The side of the bent plate 61 facing the housing 1 is provided with a receiving slot 63. When the crank arm 51 rotates, the side facing the notch of the fixed slot 62 is provided with a guide bevel 52. The guide bevel 52 is configured to allow the crank arm 51 to pass through the notch of the fixed slot 62 and be placed within the receiving slot 63. The provision of the guide bevel 52 makes it easier for the crank arm 51 to be inserted into the receiving slot 63. The receiving slot 63 and the crank arm 51 cooperate to limit the rotation of the connecting shaft 5 about its own axis, preventing the connecting shaft 5 from separating from the housing 1 and causing the micro switch 2 to fail to be fixed.

[0066] In some other possible implementations, the fixing member 6 includes a spring sheet arranged on the first side wall of the shell 1, and a plug-in hole is provided on the spring sheet. When the spring sheet is deformed, the crank arm 51 of the connecting shaft 5 can be plugged into the plug-in hole, thereby positioning the crank arm 51 and preventing the connecting shaft 5 from detaching from the shell 1.

[0067] like Figure 1 and Figure 2 As shown, this embodiment further provides a frame circuit breaker, comprising an operating mechanism 100 and the auxiliary switch described above. The frame circuit breaker further comprises a base 200 , on which the operating mechanism 100 and the auxiliary switch are both disposed.

[0068] like Figure 1 and Figure 3 As shown, a connecting plate 16 is provided on the outside of the auxiliary switch housing 1. This connecting plate 16 is positioned opposite the notch of the mounting slot 13, and one end of the connecting plate 16 is connected to the housing 1. The connecting plate 16 is provided with an assembly hole 161, which is configured for connection to the base 200. To enhance the structural strength of the connection between the connecting plate 16 and the housing 1, a reinforcing rib 17 is connected between the connecting plate 16 and the housing 1. To further enhance the structural strength of the connection between the connecting plate 16 and the base 200, a reinforcing seat 18 is provided on the connecting plate 16 along the circumference of the assembly hole 161, enhancing the structural strength around the assembly hole 161.

[0069] Figure 1 The figure shows a schematic structural diagram of the frame circuit breaker in the open state, in which the push plate 3 does not trigger the contact 21 of the micro switch 2 . Figure 2 The figure shows a schematic structural diagram of the frame circuit breaker in a closed state, where the push plate 3 triggers the contact 21 of the micro switch 2 .

[0070] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Auxiliary switch, characterized in that, include: A housing (1), wherein a side wall of the housing (1) is provided with a through hole (11); A micro switch (2) is disposed in the housing (1), and a contact (21) of the micro switch (2) passes through the penetration hole (11); A push plate (3) is arranged outside the housing (1), a middle portion of the push plate (3) is rotatably connected to the housing (1), a first end of the push plate (3) is used to trigger the contact (21) of the micro switch (2), and a plurality of mounting holes (31) are provided on the push plate (3), and the plurality of mounting holes (31) are arranged from the second end to the first end of the push plate (3); An elastic member (4), one end of the elastic member (4) is connected to one of the mounting holes (31), and the other end of the elastic member (4) is used to be connected to the operating mechanism (100).

2. The auxiliary switch according to claim 1, characterized in that A plurality of micro switches (2) are arranged in sequence along a first direction in the housing (1), a first row of mounting holes (31) is provided in the middle of the push plate (3), and the plurality of mounting holes (31) in the first row are arranged from the second end to the first end of the push plate (3).

3. The auxiliary switch according to claim 2, characterized in that: At least one second row of mounting holes (31) is provided on at least one side of the push plate (3) located on the first row of mounting holes (31). The second row of mounting holes (31) is located between two adjacent micro switches (2), and the plurality of second row of mounting holes (31) are arranged from the second end of the push plate (3) toward the first end.

4. The auxiliary switch according to any one of claims 1 to 3, characterized in that: A plurality of partition plates (12) are arranged at intervals in the housing (1), and the plurality of partition plates (12) form a plurality of mounting grooves (13) in the housing (1), and the bottom of each mounting groove (13) is provided with the through hole (11), and the micro switch (2) is detachably arranged in each mounting groove (13). Along a first direction, a first hole (14) is provided on a first side wall of the housing (1) and the partition plate (12), and the first hole (14) is coaxial with a second hole (22) of the micro switch (2) arranged in the mounting groove (13); The auxiliary switch further comprises a connecting shaft (5), a first end of the connecting shaft (5) passing through the first hole (14) and the second hole (22) and abutting against the inner side of the second side wall of the housing (1), a fixing member (6) being provided on the outer side of the first side wall of the housing (1), and the second end of the connecting shaft (5) being detachably connected to the fixing member (6).

5. The auxiliary switch according to claim 4, characterized in that: Each of the mounting slots (13) is provided through a side wall along the second direction, a first limiting member (7) is provided at the slot opening of the mounting slot (13), the first limiting member (7) is provided close to the other side wall of the mounting slot (13) along the second direction, and the first limiting member (7) is configured to limit the micro switch (2) in a third direction.

6. The auxiliary switch according to claim 5, characterized in that: The first limiting member (7) comprises a first limiting plate, the first limiting plate extending along a first direction; and / or The plurality of first limiting plates and the housing (1) are an integrally formed structure.

7. The auxiliary switch according to claim 4, characterized in that: Along the first direction, a second limiting member (8) is provided on one side wall of each mounting groove (13), the spacing between the second limiting members (8) in each two adjacent mounting grooves (13) is the same, and the micro switch (2) is accommodated between the second limiting member (8) and the other side wall of the mounting groove (13).

8. The auxiliary switch according to claim 4, characterized in that: A crank arm (51) is provided at the second end of the connecting shaft (5), and the crank arm (51) is arranged at an angle to the connecting shaft (5); The fixing member (6) comprises an L-shaped bending plate (61), one end of the bending plate (61) is connected to the first side wall of the housing (1), a fixing groove (62) is formed between the other end of the bending plate (61) and the first side wall of the housing (1), and the crank arm (51) can be inserted into the fixing groove (62); And / or, the bent plate (61) and the shell (1) are an integrally formed structure.

9. The auxiliary switch according to claim 8, characterized in that: The bending plate (61) is provided with a receiving groove (63) on the side facing the housing (1), and a guiding inclined surface (52) is provided on the side facing the notch of the fixing groove (62) when the crank arm (51) rotates. The guiding inclined surface (52) is configured to enable the crank arm (51) to pass through the notch of the fixing groove (62) and be placed in the receiving groove (63).

10. Frame circuit breaker, characterized in that, The invention comprises an operating mechanism (100) and the auxiliary switch according to any one of claims 1 to 9.

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