A combination accessory switch for a molded case circuit breaker

Abstract

The utility model discloses a kind of combination accessory switches for moulded case circuit breaker, combination accessory switch includes accessory lower seat, accessory lower seat is used to install electromagnet assembly, trigger component and trigger rod component, electromagnet assembly includes at least one of the under-voltage electromagnet with the first linkage of the shunt-wound electromagnet and the second linkage, trigger component includes at least one of shunt-wound trigger piece, auxiliary trigger piece and alarm trigger piece, trigger rod component includes at least one of shunt-wound auxiliary trigger rod, alarm trigger rod and under-voltage trigger rod, and the underside of accessory lower seat is respectively equipped with first installation part and second installation part, first installation part is used to install shunt-wound auxiliary trigger rod and under-voltage trigger rod, second installation part is used to install alarm trigger rod.The combination accessory switch of the utility model is assembled flexibly, can reach the purpose of single function independent use or multiple function integrated use, can effectively reduce inventory pressure.

Description

Technical Field

[0001] This utility model relates to the field of electrical component technology, and in particular to a combination accessory switch for molded case circuit breakers. Background Technology

[0002] A circuit breaker is a switching device that carries and interrupts current under normal and abnormal circuit conditions. Additional functions of a circuit breaker are achieved through its main body and accessories. Accessories can be selected to meet the application requirements of different situations. Currently, the internal accessories used in existing circuit breakers are mounted on both sides of the circuit breaker mechanism, enabling functions such as alarm, undervoltage, auxiliary, and shunt tripping. However, in current production, different injection molds need to be designed to produce combination accessories with corresponding functions, resulting in certain inventory pressure. Utility Model Content

[0003] To address the shortcomings of the existing technology, the purpose of this utility model is to provide a combination accessory switch for molded case circuit breakers. This combination accessory switch is flexible in assembly and can achieve the purpose of using a single function independently or using multiple functions in combination, thereby effectively reducing inventory pressure.

[0004] The technical solution adopted by this utility model to solve its technical problem is a combined accessory switch for a molded case circuit breaker. The combined accessory switch includes an accessory base, which is used to install an electromagnet assembly, a trigger assembly, and a trigger rod assembly. The electromagnet assembly includes at least one of a shunt electromagnet with a first linkage and an undervoltage electromagnet with a second linkage. The trigger assembly includes at least one of a shunt trigger, an auxiliary trigger, and an alarm trigger. The trigger rod assembly includes at least one of a shunt auxiliary trigger rod, an alarm trigger rod, and an undervoltage trigger rod. A first mounting part and a second mounting part are respectively provided on the lower side of the accessory base. The first mounting part is used to install the shunt auxiliary trigger rod and the undervoltage trigger rod, and the second mounting part is used to install the alarm trigger rod.

[0005] Preferredly, the shunt electromagnet having the first linkage, the shunt trigger, and the shunt auxiliary trigger rod are combined to form a first type of combined accessory switch.

[0006] Preferredly, the shunt electromagnet, the shunt trigger, the auxiliary trigger, and the shunt auxiliary trigger rod, having the first linkage, are combined to form a combined accessory switch of a second usage form.

[0007] Preferredly, the shunt electromagnet, the shunt trigger, the alarm trigger, the shunt auxiliary trigger rod, and the alarm trigger rod, having the first linkage element, are combined to form a third type of combined accessory switch.

[0008] Preferredly, the single auxiliary trigger and the shunt auxiliary trigger rod are combined to form a fourth type of combined accessory switch.

[0009] Preferably, the two auxiliary triggers and the shunt trigger rod are combined to form a fifth type of combined accessory switch.

[0010] Preferably, the auxiliary trigger, the alarm trigger, the shunt trigger rod, and the alarm trigger rod are combined to form a sixth type of combined accessory switch.

[0011] Preferably, the alarm trigger and the alarm trigger lever are combined to form a seventh type of combination accessory switch.

[0012] Preferredly, the undervoltage electromagnet having the second linkage and the undervoltage trigger rod are combined to form an eighth type of combination accessory switch.

[0013] Preferably, the combined accessory switch also includes an accessory upper cover, a first connecting structure between the accessory upper cover and the accessory lower base, the first connecting structure being used to connect the accessory lower base and the accessory upper cover, a second connecting structure between the accessory lower base and the triggering component, the second connecting structure being used to limit the triggering component to be located on the accessory lower base, a third connecting structure between the accessory lower base and the electromagnet assembly, the third connecting structure being used to limit the electromagnet assembly to be located on the accessory lower base, a first fixing member is also provided on the accessory upper cover, and a second fixing member is also provided on the accessory lower base, both the first fixing member and the second fixing member being used to install the combined accessory switch.

[0014] In summary, this utility model has the following beneficial effects: 1. By providing an accessory base for installing the electromagnet assembly, trigger assembly, and trigger rod assembly, by selectively installing either the shunt electromagnet with the first linkage member or the undervoltage electromagnet with the second linkage member, by selectively installing either the shunt trigger member, the auxiliary trigger member, or the alarm trigger member, and by selectively installing either the shunt auxiliary trigger rod, the alarm trigger rod, or the undervoltage trigger rod, and by providing a first mounting part and a second mounting part on the accessory base respectively, eight usage modes of the combined accessory switch are achieved. These eight usage modes are single shunt, shunt + auxiliary, shunt + alarm, auxiliary + alarm, single auxiliary, double auxiliary, single alarm, and single undervoltage. This allows for the on-demand configuration of the electromagnet assembly, trigger assembly, and trigger rod assembly, achieving single... 1. While each function can be used independently, multiple functions can be integrated to meet diverse needs, and the assembly of the combined accessory switch is flexible; 2. By setting an accessory upper cover and a first connecting structure between the accessory upper cover and the accessory lower base, the purpose of separate production of the accessory upper cover and accessory lower base is achieved. The structural design is reasonable. By setting a second connecting structure between the accessory lower base and the trigger component, the safe and reliable installation of the trigger component is achieved. By setting a third connecting structure between the accessory lower base and the electromagnet component, the safe and reliable installation of the electromagnet component is achieved. Furthermore, by setting a first fixing part on the accessory upper cover and a second fixing part on the accessory lower base, the combined accessory switch can be fixed in two ways, which has a wider range of applications and realizes the universality of the structure, significantly reducing the number of molds and development costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the accessory lower seat structure of this utility model; Figure 2 This is a schematic diagram of the accessory cover structure of this utility model. Figure 1 ; Figure 3 This is a schematic diagram of the accessory cover structure of this utility model. Figure 2 ; Figure 4 This is a schematic diagram of the mating structure of the lower accessory seat and the upper accessory cover of this utility model. Figure 1 ; Figure 5 This is a schematic diagram of the mating structure of the lower accessory seat and the upper accessory cover of this utility model. Figure 2 ; Figure 6 This is a schematic diagram of the structure of the shunt trigger, auxiliary trigger, and alarm trigger of this utility model; Figure 7 This is a schematic diagram of the shunt trigger rod, alarm trigger rod, and undervoltage trigger rod of this utility model; Figure 8This is a schematic diagram of the first fixing frame structure of this utility model; Figure 9 This is a schematic diagram of the first fixing plate structure of this utility model; Figure 10 This is a schematic diagram of the first linkage component of this utility model; Figure 11 This is a schematic diagram of the second fixing frame structure of this utility model; Figure 12 This is a schematic diagram of the second fixing plate structure of this utility model; Figure 13 This is a schematic diagram of the second linkage component of this utility model; Figure 14 This is a partial structural diagram of the present invention. Figure 1 (Divider incentive + auxiliary); Figure 15 This is a partial structural diagram of the present invention. Figure 2 (Distribution incentive + alarm); Figure 16 This is a partial structural diagram of the present invention. Figure 3 (Single incentive); Figure 17 This is a partial structural diagram of the present invention. Figure 4 (Dual support); Figure 18 This is a partial structural diagram of the present invention. Figure 5 (Auxiliary + Alarm); Figure 19 This is a partial structural diagram of the present invention. Figure 6 (Single Auxiliary); Figure 20 This is a partial structural diagram of the present invention. Figure 7 (Single alarm); Figure 21 This is a partial structural diagram of the present invention. Figure 8 (Single undervoltage); Figure 22 This is a schematic diagram of the overall structure of the present invention. Figure 1 (Single excitation or excitation + auxiliary); Figure 23 This is a schematic diagram of the overall structure of the present invention. Figure 2 (Distribution incentive + alarm); Figure 24 This is a schematic diagram of the overall structure of the present invention. Figure 3 (Auxiliary + Alarm); Figure 25 This is a schematic diagram of the overall structure of the present invention. Figure 4 (Single support or double support); Figure 26 This is a schematic diagram of the overall structure of the present invention. Figure 5 (Single alarm); Figure 27 This is a schematic diagram of the overall structure of the present invention. Figure 6 (Single undervoltage); Figure 28 This is a schematic diagram of the seven-component structure of this utility model with the ZML125 molded case circuit breaker. Figure 1 (Divider incentive + auxiliary); Figure 29 This is a schematic diagram of the seven-component structure of this utility model with the ZML125 molded case circuit breaker. Figure 2 (Single undervoltage); Figure 30 This is a schematic diagram of the seven-component structure of this utility model with the ZML125 molded case circuit breaker. Figure 3 (Auxiliary + Alarm); Figure 31 This is a schematic diagram of the seven-component structure of this utility model with the ZML125 molded case circuit breaker. Figure 4 (Divider incentive + auxiliary); Figure 32 This is a schematic diagram of the seven-component structure of this utility model with the ZML125 molded case circuit breaker. Figure 5 (Single undervoltage); Figure 33 This is a schematic diagram of the seven-component structure of this utility model with the ZML125 molded case circuit breaker. Figure 6 (Auxiliary + Alarm); Figure 34 This is a schematic diagram of the seven-component structure of this utility model with the ZML160 molded case circuit breaker. Figure 1 (Divider incentive + auxiliary); Figure 35 This is a schematic diagram of the seven-component structure of this utility model with the ZML160 molded case circuit breaker. Figure 2 (Auxiliary + Alarm); Figure 36 This is a schematic diagram of the seven-component structure of this utility model with the ZML160 molded case circuit breaker. Figure 3 (Single undervoltage); Figure 37 This is a schematic diagram of the structure of this utility model in conjunction with the ZML160 molded case circuit breaker (shunt trip + auxiliary). Figure 38 This is a schematic diagram of the structure of this utility model in conjunction with the ZML160 molded case circuit breaker (single undervoltage). Figure 39 This is a schematic diagram of the structure of this utility model in conjunction with the ZML160 molded case circuit breaker (auxiliary + alarm). Figure 40 This is a schematic diagram of the structure of this utility model in conjunction with the ZML250 molded case circuit breaker (shunt trip + auxiliary). Figure 41This is a schematic diagram of the structure of this utility model in conjunction with the ZML250 molded case circuit breaker (single undervoltage). Figure 42 This is a schematic diagram of the structure of this utility model in conjunction with the ZML250 molded case circuit breaker (auxiliary + alarm). Figure 43 This is a schematic diagram of the structure of this utility model in conjunction with the ZML250 molded case circuit breaker (shunt trip + auxiliary). Figure 44 This is a schematic diagram of the structure of this utility model in conjunction with the ZML250 molded case circuit breaker (single undervoltage). Figure 45 This is a schematic diagram of the structure of this utility model in conjunction with the ZML250 molded case circuit breaker (auxiliary + alarm). Figure 46 This is a schematic diagram of the structure of this utility model in conjunction with the trip plate. Figure 1 ; Figure 47 This is a schematic diagram of the structure of this utility model in conjunction with the trip plate. Figure 2 ; Figure 48 This is a schematic diagram of the structure of this utility model in conjunction with the rotating shaft. Figure 1 ; Figure 49 This is a schematic diagram of the structure of this utility model in conjunction with the rotating shaft. Figure 2 ; Figure 50 This is a schematic diagram of the structure of this utility model in conjunction with the rotating shaft. Figure 3 .

[0016] In the diagram: 1-Combined accessory switch, 2-Accessory lower seat, 3-Shunting electromagnet, 4-First linkage component, 5-Undervoltage electromagnet, 6-Second linkage component, 7-Shunting trigger component, 8-Auxiliary trigger component, 9-Alarm trigger component, 10-Shunting auxiliary trigger rod, 11-Alarm trigger rod, 12-Undervoltage trigger rod, 13-First mounting part, 14-Second mounting part, 15-Accessory upper cover, 16-First fixing component, 17-Second fixing component, 18-First connecting hook, 19-First connecting bayonet, 20-Positioning post, 21-Second connecting hook, 22-First fixing frame, 23-First fixing plate, 24-Shunting coil frame, 25-Second fixing frame, 26-Second fixing plate, 27-Undervoltage coil frame, 28-Third connecting hook, 29-Second connecting bayonet, 30-Third connecting bayonet, 31-Rotating shaft, 32-Trigger plate. Detailed Implementation

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model and / or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort. Furthermore, references to orientation only indicate the relative positional relationship between the components, not their absolute positional relationship.

[0018] like Figures 1-50 As shown, a combination accessory switch for a molded case circuit breaker is disclosed. The combination accessory switch 1 includes an accessory base 2, which is used to install an electromagnet assembly, a trigger assembly, and a trigger rod assembly. The electromagnet assembly includes at least one of a shunt electromagnet 3 with a first linkage 4 and an undervoltage electromagnet 5 with a second linkage 6. The trigger assembly includes at least one of a shunt trigger 7, an auxiliary trigger 8, and an alarm trigger 9. The trigger rod assembly includes at least one of a shunt auxiliary trigger rod 10, an alarm trigger rod 11, and an undervoltage trigger rod 12. It should be noted that the shunt auxiliary trigger rod 10, the alarm trigger rod 11, and the undervoltage trigger rod 12 can be elastically rotated and installed using corresponding elastic elements. A first mounting part 13 and a second mounting part 14 are respectively provided on the lower side of the accessory base 2. The first mounting part 13 is used to install the shunt auxiliary trigger rod 10 and the undervoltage trigger rod 12, and the second mounting part 14 is used to install the alarm trigger rod 11. The shunt trigger 7, the auxiliary trigger 8, and the alarm trigger rod 9 are also mounted on the accessory base 2. All components 9 can be corresponding micro switches. In the above structure, by setting an accessory base 2 for mounting the electromagnet assembly, trigger assembly, and trigger rod assembly, by selectively installing the shunt electromagnet 3 with the first linkage 4 and the undervoltage electromagnet 5 with the second linkage 6, by selectively installing the shunt trigger 7, the auxiliary trigger 8, and the alarm trigger 9, and by selectively installing the shunt auxiliary trigger rod 10, the alarm trigger rod 11, and the undervoltage trigger rod 12, and by setting a first mounting part 13 and a second mounting part 14 on the accessory base 2 respectively, eight usage forms of the combined accessory switch 1 are realized. These eight usage forms are single shunt, shunt + auxiliary, shunt + alarm, auxiliary + alarm, single auxiliary, double auxiliary, single alarm, and single undervoltage. The electromagnet assembly, trigger assembly, and trigger rod assembly can be configured as needed. While achieving independent use of a single function, multiple functions can be integrated for use, meeting diverse needs. The assembly of the combined accessory switch is flexible.

[0019] Specifically, the shunt electromagnet 3 with the first linkage 4, the shunt trigger 7, and the shunt auxiliary trigger rod 10 are combined to form the first type of accessory opening, 1. This first type of use corresponds to the single shunt function. That is, only the shunt electromagnet 3 with the first linkage 4 and the shunt trigger 7 are installed on the accessory base 2 at this time, and only the shunt auxiliary trigger rod 10 is installed on the first mounting part 13. In normal use, the shunt auxiliary trigger rod 10 will keep in contact with the shunt trigger 7 through the elastic element. When the shunt function needs to be realized, the shunt auxiliary trigger rod 10 moves, releases the contact with the shunt trigger 7, so that the shunt electromagnet 3 is energized. The shunt electromagnet 3 will drive the first linkage 4 to move through the core rod to realize the trip. After the action is completed, the corresponding elastic element will cause the shunt auxiliary trigger rod 10 to rotate and reset. The shunt auxiliary trigger rod 10 will then contact the shunt trigger 7.

[0020] Specifically, the shunt electromagnet 3 with the first linkage 4, the shunt trigger 7, the auxiliary trigger 8, and the shunt auxiliary trigger rod 10 are combined to form the combined accessory switch 1 in the second usage form. This second usage form corresponds to the shunt + auxiliary function. That is to say, only the shunt electromagnet 3 with the first linkage 4, the shunt trigger 7, and the auxiliary trigger 8 are installed on the accessory base 2 at this time. The contacts of the shunt trigger 7 and the auxiliary trigger 8 are arranged on the same side. Only the shunt auxiliary trigger rod 10 is installed on the first mounting part 13. In normal use, the shunt auxiliary trigger rod 10... The shunt trigger 7 and the auxiliary trigger 8 are kept in contact by the elastic element. When the shunt trigger + auxiliary function is required, the shunt trigger auxiliary trigger rod 10 is activated, releasing the contact between the shunt trigger 7 and the auxiliary trigger 8, so that the shunt electromagnet 3 is energized. The shunt electromagnet 3 will drive the first linkage 4 to activate through the core rod, realizing the tripping. The circuit connected to the auxiliary trigger 8 will also be switched, thereby realizing the auxiliary function. When the function is reset, the corresponding elastic element will cause the shunt trigger auxiliary trigger rod 10 to rotate and reset, and the shunt trigger auxiliary trigger rod 10 will once again form contact with the shunt trigger 7 and the auxiliary trigger 8.

[0021] Specifically, the shunt electromagnet 3 with the first linkage 4, the shunt trigger 7, the alarm trigger 9, the shunt auxiliary trigger rod 10, and the alarm trigger rod 11 are combined to form the third type of accessory switch 1. This third type of use corresponds to the shunt + alarm function. That is, at this time, only the shunt electromagnet 3 with the first linkage 4, the shunt trigger 7, and the alarm trigger 9 are installed on the accessory base 2. The contacts of the shunt trigger 7 and the alarm trigger 9 are arranged on different sides. At this time, the shunt auxiliary trigger rod 10 is installed on the first mounting part 13, and the alarm trigger rod 11 is installed on the second mounting part 14. In normal use, the shunt auxiliary trigger rod 10 keeps in contact with the shunt trigger 7 through the elastic element. When the shunt function needs to be realized, the shunt auxiliary trigger rod 10... When the trigger rod 10 is activated, it releases the resistance to the shunt trigger 7, energizing the shunt electromagnet 3. The shunt electromagnet 3 then drives the first linkage 4 via the core rod, achieving tripping. It should be noted that during normal opening and closing, the alarm trigger rod 11 does not resist the alarm trigger 9. When tripping occurs, the alarm trigger rod 11 will resist the alarm trigger 9 under the action of the corresponding elastic element, thus realizing the tripping alarm function. When the function is reset, the elastic element cooperating with the shunt auxiliary trigger rod 10 will cause the shunt auxiliary trigger rod 10 to rotate and reset. The shunt auxiliary trigger rod 10 will then resist the shunt trigger 7 again. The alarm trigger rod 11 will cause the corresponding elastic element to exert an elastic force again, and the alarm trigger rod 11 will release the resistance to the alarm trigger 9.

[0022] Specifically, the combination of a single auxiliary trigger 8 and a shunt trigger rod 10 forms the fourth type of accessory switch 1, which corresponds to a single auxiliary function. That is, only one auxiliary trigger 8 is installed on the accessory base 2 at this time, and the shunt trigger rod 10 is installed on the first mounting part 13. When the shunt trigger rod 10 is activated, it releases the resistance to the auxiliary trigger 8, and the circuit connected to the auxiliary trigger 8 is switched, thereby realizing the single auxiliary function. When the function is reset, the elastic element that cooperates with the shunt trigger rod 10 will cause the shunt trigger rod 10 to rotate and reset, and the shunt trigger rod 10 will once again resist the single auxiliary trigger 8.

[0023] Specifically, the two auxiliary triggers 8 and the shunt trigger rod 10 combine to form the fifth type of accessory switch 1, which corresponds to the dual auxiliary function. That is, only two auxiliary triggers 8 are installed on the accessory base 2 at this time, and the shunt trigger rod 10 is installed on the first mounting part 13. When the shunt trigger rod 10 is activated, it releases the resistance to the two auxiliary triggers 8, and the circuit connected to the two auxiliary triggers 8 will also be switched, thereby realizing the dual auxiliary function. When the function is reset, the elastic element that cooperates with the shunt trigger rod 10 will cause the shunt trigger rod 10 to rotate and reset, and the shunt trigger rod 10 will once again resist the two auxiliary triggers 8.

[0024] Specifically, the auxiliary trigger 8, alarm trigger 9, shunt trigger 10, and alarm trigger 11 combine to form the sixth type of accessory switch 1, which corresponds to the auxiliary + alarm function. That is, only the auxiliary trigger 8 and alarm trigger 9 are installed on the accessory base 2 at this time, the shunt trigger 10 is installed on the first mounting part 13, and the alarm trigger 11 is installed on the second mounting part 14. When the auxiliary function is needed, the shunt trigger 10 is activated, releasing the resistance to the auxiliary trigger 8. The circuit connected to the auxiliary trigger 8 is switched to achieve the auxiliary function. When the trip is triggered, the alarm trigger rod 11 will contact the alarm trigger 9 under the action of the corresponding elastic element, thereby realizing the trip alarm function. When the function is reset, the elastic element that cooperates with the shunt trigger auxiliary trigger rod 10 will cause the shunt trigger auxiliary trigger rod 10 to rotate and reset. The alarm trigger rod 11 will cause the corresponding elastic element to form an elastic force again, and the shunt trigger auxiliary trigger rod 10 will contact the auxiliary trigger 8 again. The alarm trigger rod 11 will release the contact with the alarm trigger 9.

[0025] Specifically, the alarm trigger 9 and the alarm trigger rod 11 combine to form a seventh type of accessory switch, which corresponds to the single alarm function. That is, the alarm trigger rod 11 is only installed on the second mounting part 14. When tripped, the alarm trigger rod 11 will abut against the alarm trigger 9 under the action of the corresponding elastic element, thereby realizing the tripping alarm function. When the function is reset, the alarm trigger rod 11 will cause the corresponding elastic element to form an elastic force again, and the alarm trigger rod 11 will release the abutment against the alarm trigger 9.

[0026] Specifically, the undervoltage electromagnet 5 with the second linkage 6 and the undervoltage trigger rod 12 are combined to form the eighth type of use of the combined accessory switch 1, which corresponds to the single undervoltage function. That is, at this time, the undervoltage electromagnet 5 is installed on the accessory base 2, and the undervoltage trigger rod 12 is only installed on the first mounting part 13. When the power is normal, the undervoltage electromagnet 5 will be attracted. When the current is too low, the magnetic attraction of the undervoltage electromagnet 5 decreases, the extension length of the core rod decreases, and the second linkage 6 rotates under the action of the corresponding elastic element. The second linkage 6 releases the limit on the undervoltage trigger rod 12, and the undervoltage trigger rod 12 can rotate, thereby completing the tripping and realizing the single undervoltage function. When the function is reset, the undervoltage trigger rod 12 will reset under the action of the corresponding elastic element.

[0027] Specifically, the combined accessory switch 1 also includes an accessory upper cover 15. A first connecting structure is provided between the accessory upper cover 15 and the accessory lower seat 2, connecting the accessory lower seat 2 and the accessory upper cover 15. A second connecting structure is provided between the accessory lower seat 2 and the trigger assembly, limiting the trigger assembly to be positioned on the accessory lower seat 2. A third connecting structure is provided between the accessory lower seat 2 and the electromagnet assembly, limiting the electromagnet assembly to be positioned on the accessory lower seat 2. A first fixing member 16 is also provided on the accessory upper cover 15, and a second fixing member 17 is also provided on the accessory lower seat 2. Both the first fixing member 16 and the second fixing member 17 are used to install the combined accessory switch 1. In the above structure, by setting the accessory upper cover 1... 5. A first connecting structure is set between the accessory upper cover 15 and the accessory lower seat 2, realizing the purpose of separate production of accessory upper cover 15 and accessory lower seat 2. The structural design is reasonable. By setting a second connecting structure between accessory lower seat 2 and trigger component, the safe and reliable installation of trigger component is realized. By setting a third connecting structure between accessory lower seat 2 and electromagnet component, the safe and reliable installation of electromagnet component is realized. Furthermore, by setting a first fixing part 16 on accessory upper cover 15 and a second fixing part 17 on accessory lower seat 2, the combined accessory switch 1 can be fixed in two ways, which will broaden the scope of application, realize the universality of structure, and significantly reduce the number of molds and development costs.

[0028] Specifically, the first connection structure includes three first connection hooks 18 forming on the accessory lower seat 2 and a first connection slot 19 forming on the accessory upper cover 15. The first connection hooks 18 and the first connection slot 19 engage to connect the accessory upper cover 15 and the accessory lower seat 2. The hook portions of two of the first connection hooks 18 are located on the outer side, and the hook portion of the remaining first connection hook 18 is located on the inner side. At the same time, the two first connection hooks 18 with the hook portions on the outer side also position the electromagnet assembly. More specifically, the electromagnet assembly is supported and placed on the two first connection hooks 18 with the hook portions on the outer side.

[0029] Specifically, the second connecting structure includes positioning posts 20, a first positioning hole, a second positioning hole, a third positioning hole, and a second connecting hook 21. Two positioning posts 20 are provided side-by-side on the accessory base 2. The first positioning hole is formed on the shunt trigger 7, the second positioning hole is formed on the auxiliary trigger 8, and the third positioning hole is formed on the alarm trigger 9. Two of each of the first, second, and third positioning holes are provided. In the above structure, two second connecting hooks 21 are provided, with the hook portion located on the inner side for mounting. When the trigger is set, simply align the first positioning hole, the second positioning hole, and the third positioning hole with the positioning post 20 to install and position the shunt trigger 7, the auxiliary trigger 8, and the alarm trigger 9. At the same time, the second connecting hook 21 will hook and secure the corresponding shunt trigger 7, the auxiliary trigger 8, and the alarm trigger 9, thereby achieving a fixing effect. It should be noted that when only a single trigger is set, a dummy micro switch pad without a button can be placed on the inside of the trigger. Two fourth positioning holes also need to be opened on the dummy micro switch pad.

[0030] Specifically, the shunt electromagnet 3 also includes a first fixed frame 22, a first fixed plate 23, a shunt coil frame 24, a shunt moving iron core, and a shunt stationary iron core. The first fixed frame 22 is U-shaped, and first connecting arms are provided at both ends of the first fixed frame 22. The first linkage 4 has two second connecting arms, and the first connecting arms and the second connecting arms are rotatably connected by a first mounting shaft. At the same time, a first limiting notch is formed on the outer side of one of the first connecting arms, and a first limiting block is formed on the corresponding second connecting arm. The first limiting block cooperates with the first limiting notch to limit the rotation of the first linkage 4. A second limiting block is also formed on the first fixed frame 22, and a corresponding elastic element is installed on the first fixed frame 22. The first fixing plate 23 is mounted on the shaft, and the elastic element will cooperate with the second limiting block to make the first linkage 4 rotate and the elastic element generate elastic force. The first fixing plate 23 has a through hole in the middle, which allows the core rod of the shunt electromagnet 3 to pass through. The first fixing plate 23 also has first mounting ears on opposite sides. The first fixing bracket 22 has first connecting slots on both sides of the upper end. During installation, the first mounting ears are inserted into the first connecting slots, which can limit the first fixing plate 23 to the first fixing bracket 22, so that the first fixing plate 23 can limit the shunt coil frame 24. At the same time, the accessory cover 15 also has a clearance slot, which faces the positioning post 20. The shunt coil frame 24 is used to install the shunt coil.

[0031] Specifically, the first linkage component 4 is further provided with a first linkage plate and a first tripping connecting arm. The first linkage plate is positioned between the two second connecting arms. The first linkage plate is provided with an opening slot. The first linkage plate forms a limiting connection with the core rod in the shunt electromagnet 3 through the opening slot. The first tripping connecting arm is used to realize the tripping action.

[0032] Specifically, the undervoltage electromagnet 5 also includes a second fixing frame 25, a second fixing plate 26, an undervoltage coil frame 27, an undervoltage moving iron core, and an undervoltage stationary iron core. The second fixing frame 25 is also U-shaped. The upper two sides of the second fixing frame 25 are provided with second connecting slots. The opposite sides of the second fixing plate 26 are provided with second mounting ears. During installation, the second mounting ears are inserted into the second connecting slots, so that the second fixing plate 26 is fixed on the second fixing frame 25, so that the second fixing plate 26 can limit the undervoltage coil frame 27. The second fixing plate 26 also has a through hole in the middle, through hole for the core rod of the undervoltage electromagnet 5 to pass through. The undervoltage coil frame 27 is used to install the undervoltage coil.

[0033] Specifically, two third connecting arms can also be formed on the second fixed plate 26, and two fourth connecting arms are provided on the second linkage 6. The third connecting arms and the fourth connecting arms are rotatably connected through the second mounting shaft. The corresponding elastic element is also installed on the second mounting shaft. When the second linkage 6 rotates, the elastic element can generate elastic force.

[0034] Specifically, the second linkage component 6 also has a second linkage plate, which is arranged between the two fourth connecting arms. The second linkage plate is also provided with an opening slot. The second linkage plate cooperates with the core rod in the undervoltage electromagnet 5 through the opening slot. At the same time, a support shaft is also provided between the fourth connecting arms, and one end of the undervoltage trigger rod 12 is supported on the support shaft.

[0035] Specifically, the third connection structure includes two pairs of third connection hooks 28, a pair of second connection ports 29, and a pair of third connection ports 30. The two pairs of third connection hooks 28 are arranged front to back on the accessory base 2, with the hook portion of the third connection hook 28 located on the inner side. The positioning post 20 is also located at the front pair of third connection hooks 28, and both extend upwards. The second connection ports 29 are formed on the left and right side walls of the first fixing frame 22, and the third connection ports 30 are formed on the left and right side walls of the second fixing frame 25. It should be noted that when the shunt electromagnet 3 is installed, the pair of third connection hooks 28 located on the front side and the second connection ports 29 are connected. When the two third connecting hooks 28 located on the rear side cooperate, they will be hooked onto the corresponding side arms of the first fixing frame 22. The two first connecting hooks 18 located on the inner side of the hook part also support the first fixing frame 22. Similarly, when the undervoltage electromagnet 5 is installed, the pair of third connecting hooks 28 located on the front side cooperate with the third connecting port 30, and the pair of third connecting hooks 28 located on the rear side will be hooked onto the corresponding side arms of the second fixing frame 25. It should be noted that a third clearance groove will be formed on the accessory cover 15. The third clearance groove is set corresponding to the third connecting hook 28. This makes the assembly of the accessory cover 15 and the accessory lower seat 2 more reasonable.

[0036] Specifically, the first fixing member 16 can be multiple mounting feet, each with mounting holes for screws. The mounting holes can be aligned with threaded holes, and the combined accessory switch 1 can be fixed after screwing in the screws. The second fixing member 17 can be a U-shaped elastic clip. One end of the second fixing member 17 is vertically connected to the wall of the accessory base 2. The elastic arm of the second fixing member 17 has a pressing part and a locking protrusion. By making the second fixing member 17 a U-shaped elastic clip, it has better elastic clamping force during use. The pressing part increases the contact area between the second fixing member 17 and the finger, ensuring greater stability when pressing the second fixing member 17. The locking protrusion allows for a reliable fit, thus firmly fixing the combined accessory switch 1.

[0037] Specifically, a first mounting slot is provided on the shunt auxiliary trigger rod 10, a second mounting slot is provided on the alarm trigger rod 11, and a third mounting slot is provided on the undervoltage trigger rod 12. One end of the corresponding elastic element will cooperate with the first, second, or third mounting slot. At the same time, a second tripping connecting arm is also provided on the undervoltage trigger rod 12. Accordingly, a first linkage protrusion and a second linkage protrusion are provided on the rotating shaft 31 of the molded case circuit breaker. The first linkage protrusion is used to cooperate with one end of the alarm trigger rod 11, and the second linkage protrusion is used to cooperate with one end of the shunt trigger auxiliary trigger rod 10. By providing the first linkage protrusion and the second linkage protrusion on the rotating shaft 31, reliable linkage cooperation between the rotating shaft 31 and the shunt trigger auxiliary trigger rod 10, the alarm trigger rod 11, and the undervoltage trigger rod 12 can be achieved.

[0038] Correspondingly, two third linkage protrusions will be provided on the trip plate 32 of the molded case circuit breaker. The third linkage protrusions are used to cooperate with the second trip connecting arm and the first trip connecting arm. By providing two third linkage protrusions on the trip plate 32, reliable linkage cooperation between the trip plate 32, the first linkage member 4, and the undervoltage trigger rod 12 can be achieved.

[0039] Accordingly, two combined accessory switches 1 as described above will be installed on the molded case circuit breaker. The two combined accessory switches 1 can be switches that perform the same function or switches that perform different functions. At the same time, two first fixed structures or two second fixed structures will also be installed on the molded case circuit breaker. The two first fixed structures or two second fixed structures will be arranged in an array (in existing molded case circuit breakers, they will be arranged in a mirror image, making it impossible to use two accessories with the same installation structure on the molded case circuit breaker). This realizes the left and right mutual installation of the combined accessory switches 1 on the molded case circuit breaker, reducing production costs.

[0040] Accordingly, the covers of molded case circuit breakers such as ZLM125, ZLM160, and ZLM250 can be designed as either an integrated structure or a separate structure. When an integrated structure is used, it can be fixedly installed through the first fixing member 16. When a separate structure is used, it can be fixedly installed through the second fixing member 17. It should be noted that the covers of different models of molded case circuit breakers can be manufactured in either an integrated or separate structure according to customer requirements.

[0041] In summary, by designing the rotating shaft 31, trip plate 32, and mounting structure in different models of molded case circuit breakers, the aforementioned combined accessory switch 1 can achieve eight functions and be applied to multiple models of molded case circuit breakers, making its use more reasonable and effectively reducing costs.

[0042] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A combination accessory switch for a molded case circuit breaker, the combination accessory switch (1) comprising an accessory base (2), the accessory base (2) being used to mount an electromagnet assembly, a trigger assembly, and a trigger rod assembly, characterized in that: The electromagnet assembly includes at least one of a shunt electromagnet (3) with a first linkage (4) and an undervoltage electromagnet (5) with a second linkage (6). The trigger assembly includes at least one of a shunt trigger (7), an auxiliary trigger (8), and an alarm trigger (9). The trigger rod assembly includes at least one of a shunt auxiliary trigger rod (10), an alarm trigger rod (11), and an undervoltage trigger rod (12). The lower side of the accessory base (2) is provided with a first mounting part (13) and a second mounting part (14). The first mounting part (13) is used to mount the shunt auxiliary trigger rod (10) and the undervoltage trigger rod (12). The second mounting part (14) is used to mount the alarm trigger rod (11).

2. A combination accessory switch for a molded case circuit breaker according to claim 1, characterized in that: The shunt electromagnet (3) with the first linkage (4), the shunt trigger (7) and the shunt auxiliary trigger rod (10) are combined to form a first type of combined accessory switch (1).

3. A combination accessory switch for a molded case circuit breaker according to claim 1, characterized in that: The shunt electromagnet (3), the shunt trigger (7), the auxiliary trigger (8), and the shunt auxiliary trigger rod (10) with the first linkage (4) are combined to form a combination accessory switch (1) in the second form of use.

4. A combination accessory switch for a molded case circuit breaker according to claim 1, characterized in that: The shunt electromagnet (3), the shunt trigger (7), the alarm trigger (9), the shunt auxiliary trigger rod (10), and the alarm trigger rod (11) with the first linkage (4) are combined to form a third type of combined accessory switch (1).

5. A combination accessory switch for a molded case circuit breaker according to claim 1, characterized in that: The single auxiliary trigger (8) and the shunt trigger rod (10) are combined to form a fourth type of combined accessory switch (1).

6. A combination accessory switch for a molded case circuit breaker according to claim 1, characterized in that: The two auxiliary triggers (8) and the shunt trigger rod (10) are combined to form a fifth type of combined accessory switch (1).

7. A combination accessory switch for a molded case circuit breaker according to claim 1, characterized in that: The auxiliary trigger (8), the alarm trigger (9), the shunt trigger rod (10), and the alarm trigger rod (11) are combined to form a sixth type of combined accessory switch (1).

8. A combination accessory switch for a molded case circuit breaker according to claim 1, characterized in that: The alarm trigger (9) and the alarm trigger rod (11) are combined to form a seventh type of combination accessory switch (1).

9. A combination accessory switch for a molded case circuit breaker according to claim 1, characterized in that: The undervoltage electromagnet (5) with the second linkage (6) and the undervoltage trigger rod (12) are combined to form the eighth type of combination accessory switch (1).

10. A combination accessory switch for a molded case circuit breaker according to claim 1, characterized in that: The combined accessory switch (1) also includes an accessory upper cover (15). A first connection structure is provided between the accessory upper cover (15) and the accessory lower seat (2). The first connection structure is used to connect the accessory lower seat (2) and the accessory upper cover (15). A second connection structure is provided between the accessory lower seat (2) and the trigger component. The second connection structure is used to limit the trigger component to the accessory lower seat (2). A third connection structure is provided between the accessory lower seat (2) and the electromagnet component. The third connection structure is used to limit the electromagnet component to the accessory lower seat (2). A first fixing member (16) is also provided on the accessory upper cover (15). A second fixing member (17) is also provided on the accessory lower seat (2). Both the first fixing member (16) and the second fixing member (17) are used to install the combined accessory switch (1).

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