load-break switch

Abstract

The present invention relates to the field of low-voltage electrical appliances, and in particular to a load-break switch, comprising a switch housing and three terminals arranged at one end of the switch housing, the three terminals being a first terminal, a second terminal and a third terminal; the first terminal, the second terminal and the third terminal being arranged in a stacked manner side by side in a height direction of the switch housing; the load-break switch further comprising two phase partitions, namely a first phase partition arranged between the first terminal and the second terminal, and a second phase partition arranged between the second terminal and the third terminal; one end of the first phase partition and the second phase partition are respectively connected to the switch housing for limiting rotation; the load-break switch of the present invention has a large creepage distance between the terminals and good insulation.

Description

Technical Field

[0001] The present invention relates to the field of low-voltage electrical appliances, and in particular to a load breaking switch. Background Art

[0002] Existing load-break switches, especially those with a strip-shaped switch housing, often have the following problems:

[0003] 1. Most of them do not have fuse status detection. If you need to confirm the fuse status, you need to go to the site to measure and check, which is time-consuming and laborious.

[0004] Second, the existing load circuit breakers with fuse status detection all have their micro switches installed on the fuse. When replacing a fuse, the user must first remove the micro switch, then pull out the fuse, and then install the micro switch again after replacing the fuse. This operation is complicated, and the power must be turned off before removing the micro switch. If the user replaces the fuse without turning off the power, there is a safety hazard.

[0005] Third, existing load-break switches mostly lack interphase barriers between the terminals. If customers use larger terminals or apply them in high-voltage scenarios (especially AC1000V or DC1500V), there is a risk of interphase short circuits due to the close distance between the terminals or insufficient electrical clearance or creepage distance in high-voltage situations. Alternatively, some existing load-break switches are equipped with interphase barriers, which must be installed by the customer themselves and lack foolproofing. If the customer fails to install, incorrectly installs, or misses the installation, there is a risk of interphase short circuits. This is especially true for stacked terminals, where installing barriers without interfering with wiring operations is crucial.

[0006] Fourth, the opening and closing speed of the existing load-breaking switch depends on the speed of manual operation, which affects the opening speed of the contacts and is not conducive to the rapid extinction of the arc. Summary of the Invention

[0007] The object of the present invention is to overcome the defects of the prior art and provide a load-break switch with a large creepage distance between the terminals and good insulation.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] A load-break switch comprises a switch housing 1 and three terminals arranged at one end of the switch housing 1, the three terminals being a first terminal 50, a second terminal 51 and a third terminal 52; the first terminal 50, the second terminal 51 and the third terminal 52 being arranged in a stacked manner side by side in a height direction of the switch housing 1; the load-break switch further comprises two phase partitions, namely a first phase partition 40 arranged between the first terminal 50 and the second terminal 51, and a second phase partition 41 arranged between the second terminal 51 and the third terminal 52; one end of the first phase partition 40 and the second phase partition 41 are respectively connected to the switch housing 1 for limited rotation.

[0010] Preferably, the switch housing 1 further comprises a first mounting platform 10 a extending along the height direction of the switch housing 1 , and one end of the first phase partition 40 and the second phase partition 41 are respectively connected to the first mounting platform 10 a for limited rotation.

[0011] Preferably, the first mounting platform 10a includes two second partition assembly grooves 100a respectively provided on both sides thereof and two first partition assembly grooves 101a respectively provided at the inlet ends of the two second partition assembly grooves 100a; the second partition assembly grooves 100a extend along the height direction of the first mounting platform 10a and extend from the top end of the first mounting platform 10a to the bottom end of the first mounting platform 10a, and the length of the second partition assembly grooves 100a is greater than the length of the first partition assembly grooves 101a;

[0012] The first phase partition 40 includes a first partition body 400 and two first partition mounting arms 403 arranged side by side and spaced apart at one end of the first partition body 400. A first partition mounting shaft 402 is provided on the inner side of one end of the first partition mounting arm 403. The two first partition mounting shafts 402 are arranged opposite to each other and respectively engage with the two first partition assembly grooves 101a.

[0013] The second phase partition 41 includes a second partition body 410 and two second partition mounting arms 415 arranged side by side at one end of the second partition body 410. A second partition mounting shaft 412 is provided on the inner side of one end of the second partition mounting arm 415. The two second partition mounting shafts 412 are arranged opposite to each other and respectively cooperate with the two second partition assembly grooves 100a.

[0014] Preferably, the two first partition assembly grooves 101a are offset toward the middle of the two second partition assembly grooves 100a relative to the two second partition assembly grooves 100a; the spacing between the two first partition installation axes 402 is smaller than the spacing between the two second partition installation axes 412.

[0015] Preferably, the load-break switch further comprises a first conductive plate 53, one end of which is arranged on the top side of the first mounting platform 10a and connected to the first terminal 50, limiting the first partition mounting axis 402 in the first partition assembly groove 101a.

[0016] Preferably, the switch housing 1 includes a detachable housing base 1a and a housing cover 1b, a first mounting platform 10a is arranged at one end of the housing base 1a, and the housing cover 1b includes two housing limiting ribs 11b arranged side by side at one end thereof, and the housing limiting ribs 11b extend along the height direction of the housing cover 1b, and one end of the two housing limiting ribs 11b is respectively limited and matched with the two second partition mounting shafts 412 to limit the second partition mounting shaft 412 in the second partition assembly groove 100a.

[0017] Preferably, a second annular retaining rib 413 is provided in the middle of the second partition mounting shaft 412, and a second annular groove 414 is formed between the second annular retaining rib 413 and the second partition mounting arm 415. The free end of the second partition mounting shaft 412 is inserted into the second partition mounting groove 100a, and one side of the second annular retaining rib 413 is limitedly engaged with the outer peripheral side wall of one side of the second partition mounting groove 100a.

[0018] The cover shell limiting rib 11b includes a first limiting rib arc groove 1102b and a second limiting rib arc groove 1101b which are arranged at one end and are staggered. The first limiting rib arc groove 1102b is partially limited by the second partition mounting shaft 412 in the second annular groove 414, and the second limiting rib arc groove 1101b is limited by the second annular retaining rib 413.

[0019] Preferably, the switch housing 1 includes a housing base 1a and a first mounting platform 10a, a second mounting platform 11a, and a third mounting platform 12a provided at one end of the housing base 1a. The first mounting platform 10a, the second mounting platform 11a, and the third mounting platform 12a form a three-step structure as a whole.

[0020] The load-break switch further includes a first conductive plate 53, a second conductive plate 54, and a third conductive plate 55. One end of the first conductive plate 53, the second conductive plate 54, and the third conductive plate 55 are respectively arranged on the top side of the first mounting platform 10a, the second mounting platform 11a, and the third mounting platform 12a, and are respectively connected to the first terminal 50, the second terminal 51, and the third terminal 52.

[0021] Preferably, first limiting steps 102a are further provided on both sides of the first mounting platform 10a. After the first phase partition 40 is installed in the first partition assembly groove 101a through the first partition mounting shaft 402, the first partition mounting arm 403 can be rotatably placed on the first limiting step 102a.

[0022] Preferably, the switch housing 1 includes a housing base 1a and a first mounting platform 10a, a second mounting platform 11a, and a third mounting platform 12a provided at one end of the housing base 1a. The first mounting platform 10a, the second mounting platform 11a, and the third mounting platform 12a form a three-step structure as a whole.

[0023] The load-break switch further includes a first conductive plate 53, a second conductive plate 54, and a third conductive plate 55. One end of the first conductive plate 53, the second conductive plate 54, and the third conductive plate 55 are respectively disposed on the top side of the first mounting platform 10a, the second mounting platform 11a, and the third mounting platform 12a, and are respectively connected to the first terminal 50, the second terminal 51, and the third terminal 52.

[0024] Second limiting steps 110a are further provided on both sides of the second mounting platform 11a. After the second phase partition 41 is installed in the second partition assembly groove 100a through the second partition mounting shaft 412, the second partition mounting arm 415 can be rotatably placed on the second limiting steps 110a.

[0025] In the load-break switch of the present invention, the first phase partition 40 and the second phase partition 41 improve the creepage distance and insulation performance between adjacent phases, and one end of the two phase partitions is respectively connected to the switch housing 1 for limited rotation. Firstly, the necessary movable space of the phase partition is maintained to facilitate user wiring. Secondly, it prevents users from privately disassembling the phase partitions, thereby ensuring sufficient creepage distance and insulation performance between the three wiring terminals of the load-break switch. Thirdly, the load-break switch is not shipped until the phase partitions are installed, thereby preventing users from not installing, incorrectly installing, or missing the phase partitions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the load-break switch of the present invention, which at least shows the positional relationship between the fuse and the fuse state detection element;

[0027] Figure 2 It is a schematic structural diagram of the load-break switch of the present invention, showing at least the positional relationship between the fuse, the fuse state detection element and the assembly boss;

[0028] Figure 3 This invention Figure 2 A schematic diagram of the enlarged structure of part A;

[0029] Figure 4 It is a schematic structural diagram of the load-break switch of the present invention, showing at least the positional relationship between the fuse, the internal ejector pin and the fuse status detection element;

[0030] Figure 5 This invention Figure 4 A schematic diagram of the enlarged structure of part B;

[0031] Figure 6 1 is a schematic structural diagram of a load-break switch according to the present invention, showing at least the arrangement relationship between three terminal blocks and two phase partitions;

[0032] Figure 7 It is a schematic diagram of the exploded structure of the first phase partition, the second phase partition and the housing base of the present invention;

[0033] Figure 8 This invention Figure 7 Schematic diagram of the enlarged structure of part C;

[0034] Figure 9 It is a schematic diagram of the exploded structure of the housing cover and the housing base of the present invention, at least showing the structure of the housing limiting ribs;

[0035] Figure 10 This invention Figure 9 A schematic diagram of the enlarged structure of part D;

[0036] Figure 11 Schematic diagram of the matching structure of the first phase partition, the second phase partition and the housing base of the present invention, wherein the first phase partition and the second phase partition both rotate relative to the housing base;

[0037] Figure 12 Schematic diagram of the matching structure of the first phase partition, the second phase partition and the housing base of the present invention, wherein the first phase partition rotates relative to the housing base;

[0038] Figure 13 It is a structural diagram of the load-break switch of the present invention, and the load-break switch is in a closed state;

[0039] Figure 14 It is a structural diagram of the energy storage operating mechanism of the present invention, the state of the energy storage operating mechanism corresponds to the closing state of the load circuit breaker;

[0040] Figure 15 This is a schematic diagram of the structure of the load-break switch of the present invention. At this time, the user turns the handle assembly in the opening direction, and the energy storage spring completes energy storage;

[0041] Figure 16 It is a structural diagram of the load-break switch of the present invention, and the load-break switch is in the open state;

[0042] Figure 16a It is a structural diagram of the energy storage operating mechanism of the present invention, wherein the first end of the energy storage spring reaches the dead point position of the opening switch;

[0043] Figure 17 Schematic diagram of the structure of the energy storage operating mechanism of the present invention, the state of the energy storage operating mechanism corresponds to the open state of the load circuit breaker;

[0044] Figure 18 It is a schematic diagram of the three-dimensional structure of the energy storage operating mechanism of the present invention;

[0045] Figure 19 It is a schematic diagram of the matching structure of the energy storage operating mechanism and the housing base of the present invention;

[0046] Figure 20 It is a schematic diagram of the explosion structure of the energy storage operating mechanism of the present invention;

[0047] Figure 21 It is a schematic diagram of the exploded structure of the handle assembly of the present invention;

[0048] Figure 22 It is a structural schematic diagram of the side panel assembly of the present invention;

[0049] Figure 23 It is a structural schematic diagram of the linkage rod of the present invention;

[0050] Figure 24 It is a structural schematic diagram of the transmission connecting rod of the present invention. DETAILED DESCRIPTION

[0051] The following is combined with Figure 1-24 The following embodiments are provided to further illustrate the specific implementation of the load break switch of the present invention. The load break switch of the present invention is not limited to the description of the following embodiments.

[0052] like Figure 1 and 6 As shown, the load-break switch of the present invention includes a switch housing 1, at least one circuit-breaking pole circuit disposed in the switch housing 1, and an energy storage operating mechanism 2 disposed at one end of the switch housing 1; the circuit-breaking pole circuit includes a contact system and a fuse 30 connected in series, the contact system includes a movable contact mechanism and a static contact group used in conjunction with each other, the movable contact mechanism includes a contact support 6 connected to the energy storage operating mechanism 2 and a movable contact group disposed on the contact support 6, the energy storage operating mechanism 2 drives the contact support 6 to drive the movable contact group and the static contact group to close / open, thereby closing / opening the load-break switch. Specifically, as shown in FIG. Figure 1 、 2 As shown in Figures 4, 13, 15, and 16, the load circuit breaker of the present invention includes multiple circuit breaker pole circuits, and the number of the circuit breaker pole circuits is preferably 3 (that is, the load circuit breaker of the present invention is a three-phase switch). The contact support 6 of each circuit breaker pole circuit can be an integrated structure or a linked split structure.

[0053] An improvement of the load-break switch of the present invention is that: Figure 1-5As shown, the circuit breaker circuit further includes a fuse state detection element 31 that cooperates one-to-one with the fuse 30. The fuse state detection element 31 is disposed on one side of the fuse 30, and the switch housing 1 is opened from the other side of the fuse 30 to remove and install the fuse 30. The load-break switch of the present invention not only includes the fuse state detection element 31, which facilitates the user to detect the state of the fuse 30 in real time and replace a damaged fuse 30 promptly, but also eliminates the need to remove the fuse state detection element 31 when replacing the fuse 30, thereby improving user operating efficiency.

[0054] Preferably, Figure 1-5 As shown, the fuse 30 includes an internal ejector pin 300 ; the fuse state detection element 31 is a micro switch, including a micro switch driving rod 310 driving and cooperating with the internal ejector pin 300 .

[0055] Preferably, Figure 1 and 6 As shown, the switch housing 1 includes a detachable housing cover 1c and a housing shell 1b, the fuse 30 and the fuse state detection element 31 are stacked in the housing shell 1b, and the housing cover 1c and the fuse state detection element 31 are respectively located on both sides of the fuse 30.

[0056] Another improvement of the load-break switch of the present invention is that: Figure 6-12 As shown, the load-break switch of the present invention further includes three terminals arranged at the other end of the switch housing 1, namely a first terminal 50, a second terminal 51 and a third terminal 52; the first terminal 50, the second terminal 51 and the third terminal 52 are arranged in a stacked manner side by side in the height direction of the switch housing 1; a first phase partition 40 is provided between the first terminal 50 and the second terminal 51, and a second phase partition 41 is provided between the second terminal 51 and the third terminal 52; one end of the first phase partition 40 and the second phase partition 41 are respectively connected to the switch housing 1 for limited rotation. In the load-break switch of the present invention, the first phase partition 40 and the second phase partition 41 improve the creepage distance and insulation performance between adjacent phases, and one end of the two phase partitions is respectively connected to the switch housing 1 for limited rotation. Firstly, the necessary movable space of the phase partition is maintained to facilitate user wiring. Secondly, it prevents users from privately disassembling the phase partitions, thereby ensuring sufficient creepage distance and insulation performance between the three wiring terminals of the load-break switch. Thirdly, the load-break switch is not shipped until the phase partitions are installed, thereby preventing users from not installing, incorrectly installing, or missing the phase partitions.

[0057] It should be pointed out that the “limited rotation connection” means that the phase partition can rotate relative to the switch housing 1 , but the phase partition cannot be separated from the switch housing 1 without disassembling the switch housing 1 .

[0058] Another improvement of the load-break switch of the present invention lies in the structure of the energy storage operating mechanism 2, specifically: Figure 13-24 As shown, the energy storage operating mechanism 2 includes a mechanism bracket and a handle assembly 20, an energy storage spring 22, a transmission connecting rod 23, a linkage rod 24 and a first drive shaft 23-24 respectively arranged in the middle of the mechanism bracket; one end of the handle assembly 20 is for user operation and is connected to one end of the energy storage spring 22, and the other end is pivotally arranged on the mechanism bracket; one end of the transmission connecting rod 23 is pivotally arranged on the mechanism bracket, and the other end is respectively connected to the other end of the energy storage spring 22 and one end of the linkage rod 24 through the first drive shaft 23-24, and the other end of the linkage rod 24 is drive-connected to the moving contact mechanism of the load circuit breaker; after the handle assembly 20 is turned to store energy in the energy storage spring 22, the energy storage spring 22 releases energy and drives the transmission connecting rod 23 to rotate through the first drive shaft 23-24, and at the same time drives the linkage rod 24 to drive the moving contact mechanism to move back and forth, so that the load circuit breaker is closed / opened. In the load-break switch of the present invention, the energy storage spring 22 of the energy storage operating mechanism 2, after storing energy, releases the energy to drive the linkage rod 24 to drive the moving contact mechanism to move back and forth, thereby closing and opening the load-break switch. This significantly increases the closing and opening speed of the load-break switch, making it independent of the user's manual operation speed, and significantly improving the operating performance of the load-break switch. Furthermore, the energy storage operating mechanism of the load-break switch of the present invention also has a welding indication function. Specifically, when the user toggles the handle assembly 20 to store energy in the energy storage spring 22, if welding occurs, the moving contact mechanism and linkage rod 24 cannot move. Therefore, the energy storage spring 22 will drive the handle assembly 20 to reset, indicating that welding has occurred on the load-break switch, making it easier for users to promptly detect and address the problem, thereby improving electrical safety.

[0059] Preferably, Figure 13-17 As shown, the mechanism bracket includes two side panel assemblies 21 arranged opposite to each other, and a first installation space is formed between the two side panel assemblies 21; one end of the handle assembly 20 is pivotally set on the mechanism bracket, which is the pivot end of the handle assembly, and the other end is for user operation, which is the operating end of the handle assembly; one end of the transmission link 23 is pivotally set on the mechanism bracket, which is the pivot end of the transmission link, and the other end is connected to the first drive shaft 23-24, which is the hinge end of the transmission link; the handle assembly pivot end, the first drive shaft 23-24, and the transmission link hinge end are located at one end of the first installation space, and the transmission link pivot end and the handle assembly operating end are located at the other end of the first installation space.

[0060] Preferably, Figure 18 and 20As shown, the two linkage rods 24 are respectively arranged on both sides of the handle assembly 20, the two transmission links 23 are respectively arranged on both sides of the linkage rod 24, one end of the two transmission links 23 is respectively pivoted on the two side plate assemblies 21 of the mechanism bracket, and the energy storage spring 22 is arranged in the middle of the handle assembly 20.

[0061] The load break switch of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0062] like Figure 1 、 2 As shown in Figures 4, 6, 9, 11, 12, 13, 15, and 16, the load-break switch of the present invention includes a switch housing 1, three circuit-breaking pole circuits arranged side by side in the switch housing 1, and an energy storage operating mechanism 2 and three terminals respectively arranged at both ends of the switch housing 1; the three circuit-breaking pole circuits are respectively connected to the three terminals, and each circuit-breaking pole circuit includes a contact system and a fuse 30 connected in series. The contact system includes a movable contact mechanism and a static contact group used in conjunction with each other. The movable contact mechanism includes a contact support 6 and a movable contact group arranged on the contact support 6. The contact supports 6 of the three circuit-breaking pole circuits are of an integrated structure and are connected to the energy storage operating mechanism 2 for driving; the energy storage operating mechanism 2 drives the contact support 6 to drive the movable contact group and the static contact group to close / open, thereby closing and opening the load-break switch. Of course, the contact supports 6 of the three circuit-breaking pole circuits can also be of a linked split structure.

[0063] Preferably, Figure 6 、 11 As shown in FIG. 12 , the switch housing 1 includes a housing cover 1c, a housing shell 1b and a housing base 1a arranged in sequence. The housing cover 1c and the housing shell 1b are detachably matched, and the housing shell 1b and the housing base 1a are detachably matched. Figure 2 and 4 As shown, the housing cover 1b includes two cover side walls 10b that are spaced apart from each other.

[0064] Preferably, Figure 1-5 As shown, the circuit breaker circuit further includes a fuse state detection element 31 that matches the fuse 30 one-to-one; the fuse state detection element 31 is arranged on one side of the fuse 30, and the switch housing 1 is opened from the other side of the fuse 30 to disassemble the fuse 30. Figure 3 and 5As shown, the fuse 30 includes an internal ejector pin 300 arranged on one side thereof and arranged opposite to the fuse state detection element 31; the fuse state detection element 31 is a micro switch, including a micro switch driving rod 310 driven by the internal ejector pin 300; when the fuse is in normal working state, its internal ejector pin 300 is fixed in the fuse 3 and will not press (trigger) the micro switch driving rod 310. When the fuse 30 is blown, the internal ejector pin 300 of the fuse 30 will push out and press (trigger) the micro switch driving rod 310 (specifically, a spring is provided inside the fuse 30. When the fuse 30 is blown, the spring will release energy to push out the internal ejector pin 300). The micro switch is triggered and sends a signal to remind the user that the fuse has been blown, which is convenient for the user to handle in time and improve the safety and stability of electricity use. Further, as Figure 5 As shown, the internal ejector pin 300 is disposed on the lower side of the fuse 30 and is opposite to the fuse state detection element 31 .

[0065] Preferably, Figure 1 and 13 As shown, the fuse 30, the fuse state detection element 31 and the contact system are arranged in sequence from top to bottom.

[0066] Specifically, such as Figure 1-5 As shown, the fuse 30 and the fuse state detection element 31 are stacked in the housing cover 1b, and the housing cover 1c and the fuse state detection element 31 are respectively located on both sides of the fuse 30. Figure 1-5 In the direction shown, the shell cover 1c and the fuse state detection element 31 are respectively arranged on the upper and lower sides of the fuse 30. When the fuse 30 is blown, it is only necessary to open the shell cover 1c on the upper side of the fuse 30 to replace the fuse 30 without removing the fuse state detection element 31, thereby improving the user's operating efficiency. In addition, the fuse 30 can be replaced without turning off the power, thereby improving the safety of electricity use.

[0067] Preferably, Figure 2-5 As shown, a housing side wall 10b of the housing cover 1b is provided with an assembly boss 100b for assembling the fuse state detection element 31. Figure 2-5 As shown, the assembly boss 100 b and the fuse state detection element 31 are arranged side by side on the lower side of the fuse 30 .

[0068] Preferably, Figure 3 and 5 As shown, the assembly boss 100b includes two assembly boss threaded holes 100-1b arranged side by side, and the two first assembly screws 30-31 respectively pass through the fuse state detection element 31 and are respectively threadedly connected with the two assembly boss threaded holes 100-1b. Figure 3As shown, the fuse state detection element 31 includes two first fixing holes 311 arranged side by side, through which two first assembly screws 30-31 pass. It should be noted that the assembly method of the assembly boss 100b and the fuse state detection element 31 is not limited to the above method. The two can also be fixedly connected by a snap-fit ​​method. Of course, there are many other methods. These are conventional technical means used by those skilled in the art and will not be repeated here. Moreover, technical solutions that only change the assembly relationship between the assembly boss 100b and the fuse state detection element 31 are all within the scope of protection of the load-break switch of the present invention.

[0069] Preferably, Figure 6 As shown, the three terminals of the load-break switch of the present invention are a first terminal 50, a second terminal 51 and a third terminal 52, which are arranged in a stacked manner side by side in the height direction of the switch housing 1; the load-break switch of the present invention also includes two phase partitions, namely a first phase partition 40 arranged between the first terminal 50 and the second terminal 51, and a second phase partition 41 arranged between the second terminal 51 and the third terminal 52, and one end of the first phase partition 40 and the second phase partition 41 are respectively connected to the switch housing 1 for limited rotation.

[0070] Preferably, Figure 7 and 8 As shown, the switch housing 1 further includes a first mounting platform 10a extending in the height direction of the switch housing 1, and one end of the first phase partition 40 and the second phase partition 41 are respectively connected to the first mounting platform 10a for limited rotation. Figure 8As shown, the first mounting platform 10a includes two second partition assembly grooves 100a respectively arranged on both sides thereof and two first partition assembly grooves 101a respectively arranged at the inlet ends of the two second partition assembly grooves 100a; the second partition assembly groove 100a extends along the height direction of the first mounting platform 10a and extends from the top end of the first mounting platform 10a to the bottom end direction of the first mounting platform 10a, and the length of the second partition assembly groove 100a is greater than the length of the first partition assembly groove 101a; the first phase partition 40 includes a first partition body 400 and a first partition body 400 arranged side by side at intervals on the first partition The two first partition mounting arms 403 at one end of the main body 400 are provided with a first partition mounting shaft 402 on the inner side of one end of the first partition mounting arm 403. The two first partition mounting shafts 402 are arranged opposite to each other and respectively cooperate with the two first partition assembly grooves 101a. The second phase partition 41 includes a second partition body 410 and two second partition mounting arms 415 arranged side by side at one end of the second partition body 410. The second partition mounting arm 415 is provided with a second partition mounting shaft 412 on the inner side of one end of the second partition mounting arm 415. The two second partition mounting shafts 412 are arranged opposite to each other and respectively cooperate with the two second partition assembly grooves 100a. Further, as Figure 8 As shown, the two first partition plate assembly grooves 101a are offset toward the middle of the two second partition plate assembly grooves 100a relative to the two second partition plate assembly grooves 100a. Figure 8 As shown, the first partition mounting arm 403 includes a first mounting arm connecting portion 401, one end of the first mounting arm connecting portion 401 is connected to the first partition body 400, and the other end is provided with a first partition mounting shaft 402 on the inner side; the second partition mounting arm 415 includes a second mounting arm connecting portion 411, one end of the second mounting arm connecting portion 411 is connected to the second partition body 410, and the other end is provided with a second partition mounting shaft 412 on the inner side.

[0071] Preferably, Figure 7 and 8 As shown, the first mounting platform 10a is arranged at one end of the housing base 1a.

[0072] Preferably, Figure 6-11 As shown, the load-breaking switch of the present invention further includes a first conductive plate 53, one end of which is arranged on the top side of the first mounting platform 10a and connected to the first terminal 50, limiting the first partition mounting axis 402 in the first partition assembly groove 101a.

[0073] Preferably, Figure 8-11As shown, the housing cover 1b includes two housing limit ribs 11b arranged side by side and spaced apart at one end thereof. The housing limit ribs 11b extend along the height direction of the housing cover 1b. One end of the two housing limit ribs 11b is respectively engaged with the two second partition mounting shafts 412 to limit the second partition mounting shafts 412 in the second partition assembly groove 100a. Figure 8 As shown, a second annular retaining rib 413 is provided in the middle of the second partition installation shaft 412, and a second annular groove 414 is formed between the second annular retaining rib 413 and the second partition installation arm 415. The free end of the second partition installation shaft 412 is inserted into the second partition assembly groove 100a, and one side of the second annular retaining rib 413 is limitedly matched with the outer peripheral side wall of one side of the second partition assembly groove 100a; the cover casing limiting rib 11b includes a first limiting rib arc groove 1102b and a second limiting rib arc groove 1101b which are arranged at one end thereof and are staggered. The first limiting rib arc groove 1102b is limitedly matched with the part of the second partition installation shaft 412 in the second annular groove 414, and the second limiting rib arc groove 1101b is limitedly matched with the second annular retaining rib 413. Further, as Figure 10 As shown, a limiting rib step structure 1103b is formed at the connection between the first limiting rib arc groove 1102b and the second limiting rib arc groove 1101b, and the limiting rib step structure 1103b is limitedly matched with the second annular groove 414.

[0074] Preferably, Figure 9 and 10 As shown, the shell cover 1b also includes two shell reinforcement ribs 110b arranged at one end thereof, each shell reinforcement rib 110b is arranged at the connection between the shell limiting rib 11b and the shell cover 1b, and the upper and lower ends of the shell reinforcement rib 110b are respectively lower than the upper and lower ends of the shell limiting rib 11b.

[0075] Specifically, such as Figure 7-11As shown, the second partition assembly groove 100a extends from the upper end (top end) of the first mounting platform 10a to the lower end (bottom end) to the middle of the first mounting platform 10a, and the upper end of the second partition assembly groove 100a is its entrance end. The upper ends (entrance ends) of the two second partition assembly grooves 100a are respectively provided with first partition assembly grooves 101a, and the two first partition assembly grooves 101a are offset to the middle of the top side of the first mounting platform 10a relative to the two second partition assembly grooves 100a; when installing, first install the two second partition mounting shafts 412 of the second phase partition 41 to the two second partition assembly grooves 10 0a and slide to the lower end of the second partition assembly groove 100a, and then install the two first partition mounting shafts 402 of the first phase partition 40 into the two first partition assembly grooves 101a, set one end of the first conductive plate 53 on the top side of the first mounting platform 10a, seal the upper end of the second partition assembly groove 100a, so that the first partition mounting shaft 402 is limited in the second partition assembly groove 100a, and install the two cover limiting ribs 11b from above the first mounting platform 10a to both sides of the first mounting platform 10a, and the lower ends of the two cover limiting ribs 11b are respectively limited with the two second partition mounting shafts 412.

[0076] Preferably, Figure 6 、 11 As shown in FIG. 12 , the switch housing 1 further includes a second mounting platform 11a and a third mounting platform 12a provided at one end of the housing base 1a. The first mounting platform 10a, the second mounting platform 11a, and the third mounting platform 12a form a three-step structure as a whole. The load-break switch further includes a second conductive plate 54 and a third conductive plate 55. One end of the second conductive plate 54 and the third conductive plate 55 are respectively provided on the top side of the second mounting platform 11a and the third mounting platform 12a, and are respectively connected to the second terminal 51 and the third terminal 52. Specifically, as shown in FIG. Figure 6 、 11 As shown in Figure 12, the heights of the first mounting platform 10a, the second mounting platform 11a, and the third mounting platform 12a decrease in sequence, forming a three-step structure. Furthermore, the first conductive plate 53, the second conductive plate 54, and the third conductive plate 55 are respectively connected to the three disconnecting poles of the load-break switch.

[0077] Preferably, Figure 11As shown, first retaining steps 102a are provided on both sides of the first mounting platform 10a, and two first partition mounting arms 403 of the first phase partition 40 can be rotatably placed on the first retaining steps 102a. Second retaining steps 110a are provided on both sides of the second mounting platform 11a, and second partition mounting arms 415 can be rotatably placed on the second retaining steps 110a. The first retaining steps 102a and the second retaining steps 110a respectively maintain the first phase partition 40 and the second phase partition 41 in the appropriate position to avoid obstruction to the wiring of the terminal.

[0078] Preferably, Figure 13-24 FIG. 1 shows an embodiment of the energy storage operating mechanism 2 .

[0079] like Figure 13-18 As shown in Figure 20, the energy storage operating mechanism 2 includes a mechanism bracket and a handle assembly 20, an energy storage spring 22, a transmission link 23, a linkage rod 24 and a first drive shaft 23-24 respectively arranged in the middle of the mechanism bracket; one end of the handle assembly 20 is for user operation and is connected to one end of the energy storage spring 22, and the other end is pivotally arranged on the mechanism bracket; one end of the transmission link 23 is pivotally arranged on the mechanism bracket, and the other end is respectively connected to the other end of the energy storage spring 22 and one end of the linkage rod 24 through the first drive shaft 23-24, and the other end of the linkage rod 24 is driven and connected to the moving contact mechanism of the load circuit breaker; after the handle assembly 20 is turned to store energy in the energy storage spring 22, the energy storage spring 22 releases energy to drive the transmission link 23 to rotate through the first drive shaft 23-24, and at the same time drives the linkage rod 24 to drive the moving contact mechanism to move back and forth, so that the load circuit breaker is closed / opened. Further, as Figure 13-18 As shown, the mechanism bracket includes two side panel assemblies 21 arranged opposite to each other, and a first installation space is formed between the two side panel assemblies 21; one end of the handle assembly 20 is pivotally set on the mechanism bracket, which is the pivot end of the handle assembly, and the other end is for user operation, which is the operating end of the handle assembly; one end of the transmission link 23 is pivotally set on the mechanism bracket, which is the pivot end of the transmission link, and the other end is connected to the first drive shaft 23-24, which is the hinge end of the transmission link; the handle assembly pivot end, the first drive shaft 23-24, and the transmission link hinge end are located at one end of the first installation space, and the transmission link pivot end and the handle assembly operating end are located at the other end of the first installation space.

[0080] Preferably, Figure 13-17 As shown, during the closing and opening process and upon completion of the load-break switch of the present invention, the handle assembly 20 has no contact with the first drive shaft 23 - 24 .

[0081] Preferably, Figure 19 and 20As shown, the two linkage rods 24 are respectively arranged on both sides of the handle assembly 20, the two transmission links 23 are respectively arranged on both sides of the two linkage rods 24, one end of the two transmission links 23 is respectively pivoted on the two side plate assemblies 21 of the mechanism bracket, and the energy storage spring 22 is arranged in the middle of the handle assembly 20.

[0082] The following will be combined Figure 13-17 As shown, the opening process and closing process of the load circuit breaker of the present invention are described in detail.

[0083] The opening process of the load-breaking switch of the present invention is as follows: Figure 13 and 14 As shown, the load circuit breaker of the present invention is in a closed state, and one end of the energy storage spring 22 connected to the handle assembly 20 (the first end of the energy storage spring) is located on one side of the transmission connecting rod 23 (the first side of the transmission connecting rod). The handle assembly 20 is moved in the first direction D1 to drive the first end of the energy storage spring to move and the energy storage spring 22 starts to store energy. When the first end of the energy storage spring, the rotation center of the transmission connecting rod 23 and the axis of the first drive shaft 23-24 are located in the same straight line, the first end of the energy storage spring reaches the closing dead point position. When the handle assembly 20 continues to drive the first end of the energy storage spring to move to the other side of the transmission connecting rod 23 (the second side of the transmission connecting rod) (that is, when the first end of the energy storage spring passes the closing dead point position), the energy storage operating mechanism 2 enters as shown in FIG. Figure 15 In the state shown, the energy storage spring 22 starts to release energy, and the other end of the energy storage spring 22 (the second end of the energy storage spring) drives the transmission connecting rod 23 to rotate in the second direction D2 through the first drive shaft 23-24 and simultaneously drives the linkage rod 24 to move in the opening direction, so that the load circuit breaker is opened, and the energy storage operating mechanism 2 enters the state shown in FIG. Figure 16 and 17 In the state shown, the first direction D1 and the second direction D2 are opposite to each other.

[0084] The closing process of the load-breaking switch of the present invention is as follows: Figure 16 and 17 As shown, the load circuit breaker of the present invention is in the open state, the first end of the energy storage spring 22 is located on the second side of the transmission connecting rod, and the handle assembly 20 is toggled in the second direction D2 to drive the first end of the energy storage spring 22 to move and the energy storage spring 22 starts to store energy. When the first end of the energy storage spring, the rotation center of the transmission connecting rod 23 and the axis of the first drive shaft 23-24 are located in the same straight line, the first end of the energy storage spring 22 reaches the open dead point position (as shown in FIG. Figure 16aAs shown in FIG5 , when the handle assembly 20 continues to drive the first end of the energy storage spring 22 to move to the first side of the transmission connecting rod (i.e., when the first end of the energy storage spring passes the trip dead point position), the energy storage spring 22 begins to release energy, and the second end of the energy storage spring 22 drives the transmission connecting rod 23 to rotate in the first direction D1 through the first drive shaft 23-24 and simultaneously drives the linkage rod 24 to move in the closing direction, so that the load circuit breaker is closed, and the energy storage operating mechanism 2 enters the state shown in FIG5 . Figure 13 and 14 Status shown.

[0085] Specifically, the opening process of the load-breaking switch of the present invention is as follows: Figure 13-17 In the direction shown, the handle assembly pivot end (the lower end of the handle assembly 20), the first drive shaft 23-24, and the transmission link hinge end (the lower end of the transmission link 23) are located at the lower end of the first installation space, and the transmission link pivot end (the upper end of the transmission link 23) and the handle assembly operating end (the upper end of the handle assembly 20) are located at the upper end of the first installation space; Figure 13-14 As shown, the load circuit breaker is in the closed state, the first end of the energy storage spring (i.e., the upper end of the energy storage spring 22) is located on the left side of the transmission connecting rod 23 (i.e., the first side of the transmission connecting rod), and the handle assembly 20 is moved clockwise (i.e., in the first direction D1) to drive the first end of the energy storage spring to move to the right side of the transmission connecting rod 23 (i.e., the second side of the transmission connecting rod). After the energy storage spring 22 is stretched and stored energy passes the opening dead point position, it enters the state as shown in FIG. Figure 15 In the state shown, the energy storage spring 22 will apply a force F1 to the first drive shaft 23-24, and the horizontal component F2 of the force F1 makes the first drive shaft 23-24 have a tendency to move to the right, and then the energy storage spring 22 contracts to release energy, and the second end of the energy storage spring (i.e., the lower end of the energy storage spring 22) drives the transmission connecting rod 23 to rotate counterclockwise (i.e., the second direction D2) through the first drive shaft 23-24, and drives the linkage rod 24 to move to the right (i.e., the opening direction), so that the load circuit breaker is opened, and the energy storage operating mechanism 2 enters the state shown in FIG. Figure 16 and 17 In the state shown, the handle assembly 20 is toggled counterclockwise to drive the first end of the energy storage spring to move from the right side of the transmission connecting rod 23 to the left side of the transmission connecting rod, and the energy storage spring 22 is stretched to store energy, and then the energy storage spring 22 contracts to release energy. The second end of the energy storage spring drives the transmission connecting rod 23 to rotate clockwise through the first drive shaft 23-24 and drives the linkage rod 24 to move to the left, so that the load circuit breaker is closed and the energy storage operating mechanism 2 enters Figure 13 and 14 Status shown.

[0086] Specifically, the closing process of the load-breaking switch of the present invention is as follows: Figure 16 and 17In the direction shown, the load circuit breaker is in the open state, the first end of the energy storage spring (i.e., the upper end of the energy storage spring 22) is located on the right side of the transmission link 23 (i.e., the second side of the transmission link), and the handle assembly 20 is moved counterclockwise (i.e., in the second direction D2) to drive the first end of the energy storage spring to move to the left side of the transmission link 23 (i.e., the first side of the transmission link), and the energy storage spring 22 is stretched to store energy and passes the closing dead point position. The energy storage spring 22 begins to contract and release energy, and the second end of the energy storage spring (i.e., the lower end of the energy storage spring 22) drives the transmission link 23 to rotate clockwise (i.e., in the first direction D) through the first drive shaft 23-24 and drives the linkage rod 24 to move to the left (i.e., in the closing direction), so that the load circuit breaker is closed, and the energy storage operating mechanism 2 enters the state shown in FIG. Figure 13 and 14 Status shown.

[0087] Preferably, Figure 20 and 21 As shown, the handle assembly 20 includes a handle rocker arm 201, a hanging spring shaft 202 and a rocker arm rotating shaft 203. The two handle rockers 201 are spaced apart from each other, one end of which is connected by the hanging spring shaft 202 and the other end is connected by the rocker arm rotating shaft 203 and is rotatably arranged on the mechanism bracket through the rocker arm rotating shaft 203. A rocker arm avoidance hole 2010 is provided in the middle of the handle rocker arm 201. After the two ends of the first drive shaft 23-24 pass through the two rocker arm avoidance holes 2010, they are respectively connected to the two linkage rods 24 and the two transmission connecting rods 23. Further, as Figure 20 and 21 As shown, the handle assembly 20 further includes an operating handle 200, one end of which protrudes from the outside of the mechanism bracket for user operation, and the other end is connected to two handle rocker arms 201. Figure 22 As shown, the side plate assembly 21 includes a rocker arm shaft mounting hole 21-202 that cooperates with the rocker arm shaft 203. Figure 13-17 As shown in FIG. 20 , the energy storage operating mechanism 2 further includes two bushings 2030 , and two bearings 2030 are respectively sleeved on both ends of the rocker arm shaft 203 , and each bearing 2030 is located between a side plate assembly 21 of a handle rocker arm 201 to prevent the axial movement of the rocker arm shaft 203 . Figure 20 and 21 As shown, the rocker arm avoidance hole 2010 is a semicircular hole.

[0088] Preferably, Figure 21 As shown, the handle rocker arm 201 includes a handle operating portion 2001 and a handle connecting portion 2002. The handle connecting portion 2002 is connected to the handle rocker arm 201, and the handle operating portion 2001 protrudes from the outside of the mechanism bracket for user operation.

[0089] Preferably, Figure 21As shown, one end of the handle rocker arm 201 is provided with a rocker arm connecting hole 201-204, and the third assembly screw 204 passes through the rocker arm connecting hole 201-204 and is threadedly connected to the operating handle 200, connecting the handle rocker arm 201 and the operating handle 200 together; the other end of the handle rocker arm 201 is provided with a rocker arm shaft hole 201-203, which cooperates with the rocker arm rotating shaft 203.

[0090] Preferably, Figure 20 and 23 As shown, the linkage rod 24 includes a linkage rod waist-shaped hole 241 provided at one end thereof for cooperating with the first drive shaft 23-24. The axial direction of the linkage rod waist-shaped hole 241 is perpendicular to the moving direction of the linkage rod 24. The length of the linkage rod waist-shaped hole 241 is greater than the outer diameter of the first drive shaft 23-24. The width of the linkage rod waist-shaped hole 241 matches or is slightly greater than the outer diameter of the first drive shaft 23-24, so that the linkage rod 24 can move horizontally without moving vertically, thereby ensuring the smooth movement of the moving contact mechanism and improving the stability and reliability of the load-breaking switch. Further, as Figure 23 As shown, the linkage rod 24 further includes a linkage rod connection hole 240 provided at its other end. The linkage rod connection hole 240 cooperates with the movable contact mechanism. Specifically, the second assembly screw passes through the linkage rod connection hole 240 and is threadedly engaged with the contact support 6 of the movable contact mechanism, thereby connecting the linkage rod 24 and the contact support 6 together.

[0091] Preferably, Figure 24 As shown, the transmission link 23 includes a transmission link connecting hole 230 and a transmission link shaft hole 231 respectively arranged at both ends thereof. The transmission link 23 is hinged to the first drive shaft 23-24 through the transmission link connecting hole 230, and is rotationally connected to the transmission link rotating shaft 21-23 (i.e., the rotation axis of the transmission link 23) on the side panel assembly 21 through the transmission link shaft hole 231.

[0092] Preferably, Figure 13-18 As shown in 21-22, the energy storage operating mechanism 2 also includes a transmission link limit platform 211 for limiting the swing amplitude of the transmission link 23. Two transmission link limit platforms 211 are provided on the side plate assembly 21 of each mechanism bracket, namely the transmission link closing limit platform 211b and the transmission link opening limit platform 211a; after the energy storage operating mechanism 2 drives the load circuit breaker to close, the transmission link 23 and the transmission link closing limit platform 211b are limited and matched; after the energy storage operating mechanism 2 drives the load circuit breaker to open, the transmission link 23 and the transmission link opening limit platform 211a are limited and matched.

[0093] Preferably, Figure 13-18As shown in Figures 21-22, the energy storage operating mechanism 2 also includes a handle assembly limiting shaft 213 for limiting the swing amplitude of the handle assembly 20. Two handle assembly limiting shafts 213 are respectively arranged on both sides of the swing direction of the handle assembly 20. Each handle assembly limiting shaft 213 is connected to the two side plate assemblies 21 of the mechanism bracket. The two handle assembly limiting shafts 213 are respectively a handle assembly closing limiting shaft 213b and a handle assembly opening limiting shaft 213a. When the load circuit breaker is closed / opened, the handle assembly 20 is limitedly matched with the handle assembly closing limiting shaft 213b / handle assembly opening limiting shaft 213a. Furthermore, the side plate assembly 21 includes limiting shaft mounting holes 210-213 that cooperate with the handle assembly limiting shaft 213.

[0094] In the load-break switch of the present invention, the transmission link limit platform 211 and / or the handle assembly limit shaft 213 are conducive to accurately controlling the movement distance of the linkage rod 24, thereby ensuring reliable cooperation between the moving contact group and the static contact group.

[0095] Preferably, Figure 13-17 As shown, the energy storage operating mechanism 2 also includes an opening and closing micro switch 25 for collecting the opening and closing status information of the energy storage operating mechanism 2. After the energy storage operating mechanism 2 drives the load circuit breaker to close / open, the linkage rod 24 presses / releases the driving rod of the opening and closing micro switch 25, so that the user can monitor the opening / closing status of the load circuit breaker in real time, thereby improving the safety of electricity use. Figure 13-17 As shown, the micro switch 25 and the moving contact mechanism are respectively driven and matched with the two ends of the linkage rod 24. Figure 13-17 In the direction shown, the micro switch 25 is driven to cooperate with the left end of the linkage rod 24, and the contact support 6 of the moving contact mechanism is driven to connect with the right end of the linkage rod 24. Figure 22 As shown, the opening and closing micro switch 25 is fixed to the side plate assembly 21 by fourth assembly screws 21-25.

[0096] Preferably, Figure 13 、 15 As shown in FIG. 16 , the two side walls 10b of the housing cover 1b are respectively located on both sides of the energy storage operating mechanism 2, and the two side plate assemblies 21 of the mechanism bracket are respectively connected to the two side walls 10b. Figure 14 and 22 As shown, the side panel assembly 21 includes a plurality of side panel assembly limiting holes 2100, such as Figure 2 and 4 As shown, the housing side wall 10 is provided with an operating mechanism limiting column 12b that cooperates with the side panel assembly limiting hole 2100, and the operating mechanism limiting column 12b is inserted into the side panel assembly limiting hole 2100 and is connected to it for limiting.

[0097] Preferably, Figure 19 As shown, one end of the two side panel assemblies 21 is respectively connected to the housing base 1a. Figure 19 In the direction shown, the lower end of the side panel assembly 21 is limitedly connected to the shell base 1a.

[0098] Specifically, such as Figure 18 and 19 As shown, the side panel assembly 21 includes an L-shaped side panel 210, and the side panel 210 includes a main side panel 2101b and a side panel connecting panel 2101a that are connected by bending. The main side panel 2101b is limitedly connected to the cover side wall 10b, and the side panel connecting panel 2101a is limitedly connected to the shell base 1a.

[0099] Preferably, the load-break switch of the present invention further includes an indicator for indicating the open / closed state of the load-break switch. The indicator is connected to the handle assembly 20 by driving, and the switch housing 1 includes an indicator hole that corresponds to the indicator. When the handle assembly 20 is toggled to close the load-break switch, the handle assembly 20 drives the indicator to move so that the closing mark of the indicator is visible through the indicator hole. When the handle assembly 20 is toggled to open the load-break switch, the handle assembly 20 drives the indicator to move so that the opening mark of the indicator is visible through the indicator hole. Furthermore, the closing mark and the opening mark both include text marks and / or color marks.

[0100] Preferably, Figure 1 、 13 As shown in Figures 15 and 16, the load-break switch of the present invention further includes a first guide and limit structure, through which the contact support 6 engages with the switch housing 1. The first guide and limit structure includes a roller device and a rolling track for use therewith. The first guide and limit mechanism enables smoother movement of the movable contact mechanism of the load-break switch, thereby improving the operating performance of the load-break switch. Of course, the contact support 6 can also engage with the switch housing 1 by sliding. Compared to the above method, the friction between the two will increase, affecting the smoothness of the movement of the contact support 6.

[0101] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.

Claims

1. A load-break switch comprising a switch housing (1) and three terminals arranged at one end of the switch housing (1), the three terminals being a first terminal (50), a second terminal (51) and a third terminal (52); characterized in that: The first terminal (50), the second terminal (51) and the third terminal (52) are arranged in a stacked manner in a side-by-side manner along the height direction of the switch housing (1); the load-breaking switch further comprises two phase partitions, namely a first phase partition (40) arranged between the first terminal (50) and the second terminal (51), and a second phase partition (41) arranged between the second terminal (51) and the third terminal (52); one end of the first phase partition (40) and the second phase partition (41) are respectively connected to the switch housing (1) for limited rotation, and the first phase partition (40) and the second phase partition (41) can rotate relative to the switch housing (1), but the first phase partition (40) and the second phase partition (41) cannot be separated from the switch housing (1) without disassembling the switch housing (1).

2. The load-break switch according to claim 1, wherein: The switch housing (1) further comprises a first mounting platform (10a) extending in the height direction of the switch housing (1), and one end of the first phase partition plate (40) and the second phase partition plate (41) are respectively connected to the first mounting platform (10a) for limited rotation.

3. The load-break switch according to claim 2, wherein: The first mounting platform (10a) comprises two second partition assembly grooves (100a) respectively arranged on both sides thereof and two first partition assembly grooves (101a) respectively arranged at the inlet ends of the two second partition assembly grooves (100a); the second partition assembly groove (100a) extends along the height direction of the first mounting platform (10a) and extends from the top end of the first mounting platform (10a) to the bottom end of the first mounting platform (10a), and the length of the second partition assembly groove (100a) is greater than the length of the first partition assembly groove (101a); The first phase partition (40) comprises a first partition body (400) and two first partition mounting arms (403) arranged side by side and spaced apart at one end of the first partition body (400); a first partition mounting shaft (402) is provided on the inner side of one end of the first partition mounting arm (403); the two first partition mounting shafts (402) are arranged opposite to each other and respectively cooperate with the two first partition assembly grooves (101a); The second phase partition (41) includes a second partition body (410) and two second partition mounting arms (415) arranged side by side and spaced apart at one end of the second partition body (410); a second partition mounting shaft (412) is provided on the inner side of one end of the second partition mounting arm (415); the two second partition mounting shafts (412) are arranged opposite to each other and respectively cooperate with the two second partition assembly grooves (100a).

4. The load-break switch according to claim 3, wherein: The two first partition assembly grooves (101a) are offset toward the middle of the two second partition assembly grooves (100a) relative to the two second partition assembly grooves (100a); and the spacing between the two first partition installation axes (402) is smaller than the spacing between the two second partition installation axes (412).

5. The load-break switch according to claim 3, wherein: The load-break switch further comprises a first conductive plate (53), one end of which is arranged on the top side of the first mounting platform (10a) and connected to the first terminal (50), limiting the first partition mounting axis (402) in the first partition assembly groove (101a).

6. The load-break switch according to claim 3, wherein: The switch housing (1) comprises a detachably matable housing base (1a) and a housing cover (1b); a first mounting platform (10a) is arranged at one end of the housing base (1a); the housing cover (1b) comprises two housing limiting ribs (11b) arranged side by side and spaced apart at one end thereof; the housing limiting ribs (11b) extend along the height direction of the housing cover (1b); one end of the two housing limiting ribs (11b) respectively engages with two second partition mounting shafts (412) to limit the second partition mounting shafts (412) within the second partition assembly groove (100a).

7. The load-break switch according to claim 6, wherein: A second annular retaining rib (413) is provided in the middle of the second partition plate mounting shaft (412), a second annular groove (414) is formed between the second annular retaining rib (413) and the second partition plate mounting arm (415), the free end of the second partition plate mounting shaft (412) is inserted into the second partition plate mounting groove (100a), and one side of the second annular retaining rib (413) is limitedly engaged with the outer peripheral side wall of one side of the second partition plate mounting groove (100a); The cover casing limiting rib (11b) comprises a first limiting rib arc groove (1102b) and a second limiting rib arc groove (1101b) arranged at one end thereof and staggered. The first limiting rib arc groove (1102b) is in limiting engagement with a portion of the second partition mounting shaft (412) in the second annular groove (414), and the second limiting rib arc groove (1101b) is in limiting engagement with the second annular retaining rib (413).

8. The load-break switch according to claim 1, wherein: The switch housing (1) comprises a housing base (1a) and a first mounting platform (10a), a second mounting platform (11a), and a third mounting platform (12a) arranged at one end of the housing base (1a); the first mounting platform (10a), the second mounting platform (11a), and the third mounting platform (12a) form a three-step structure as a whole; The load-break switch further comprises a first conductive plate (53), a second conductive plate (54) and a third conductive plate (55), one end of each of the first conductive plate (53), the second conductive plate (54) and the third conductive plate (55) being respectively arranged on the top side of the first mounting platform (10a), the second mounting platform (11a) and the third mounting platform (12a), and respectively connected to the first terminal (50), the second terminal (51) and the third terminal (52).

9. The load-break switch according to claim 3, wherein: First limiting steps (102a) are also provided on both sides of the first mounting platform (10a); after the first phase partition (40) is installed in the first partition assembly groove (101a) through the first partition mounting shaft (402), the first partition mounting arm (403) can be rotatably placed on the first limiting step (102a).

10. The load-break switch according to claim 9, characterized in that: The switch housing (1) comprises a housing base (1a) and a first mounting platform (10a), a second mounting platform (11a), and a third mounting platform (12a) arranged at one end of the housing base (1a); the first mounting platform (10a), the second mounting platform (11a), and the third mounting platform (12a) form a three-step structure as a whole; The load-break switch further comprises a first conductive plate (53), a second conductive plate (54) and a third conductive plate (55), one end of the first conductive plate (53), the second conductive plate (54) and the third conductive plate (55) being respectively arranged on the top side of the first mounting platform (10a), the second mounting platform (11a) and the third mounting platform (12a), and respectively connected to the first terminal (50), the second terminal (51) and the third terminal (52); Second limiting steps (110a) are also provided on both sides of the second mounting platform (11a). After the second phase partition (41) is installed in the second partition assembly groove (100a) through the second partition mounting shaft (412), the second partition mounting arm (415) can be rotatably placed on the second limiting steps (110a).

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