Terminal assembly and circuit breaker

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a terminal assembly and a circuit breaker, the terminal assembly comprises a wiring terminal and a mounting plate, and two opposite sides of the wiring terminal are respectively connected with a first clamping structure and a second clamping structure; the installation plate is provided with the installation cavity in a penetrating mode, the wiring terminal is connected with the two opposite side walls of the installation cavity in a clamped mode through the first clamping structure and the second clamping structure, the clamping stability of the wiring terminal in the installation cavity can be improved, it is ensured that the wiring terminal is firmly connected to the installation plate, and loosening is avoided; and the wiring terminals are ensured to be well plugged after the circuit breaker is used for a long time. Besides, the mounting cavity penetrates through the mounting plate, and the wiring terminal is clamped in the mounting cavity, so that a structure for connecting a lead and a structure for inserting another wiring terminal can be designed on one side of the wiring terminal, and a structure for connecting the lead and a structure for inserting another wiring terminal can also be designed on two sides of the wiring terminal along the thickness direction of the mounting plate respectively; and limitation of the mounting plate is avoided, and the design is more reasonable.

Description

Technical Field

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

[0002] The circuit breaker includes a pair of connecting terminals, namely a moving terminal and a static terminal, which can be detachably contacted with each other to connect or disconnect the corresponding circuit. For example, for a drawer-type circuit breaker, the static terminal is mounted on the drawer seat of the circuit breaker through a mounting plate, and the moving terminal is mounted on the body of the circuit breaker through a mounting plate. When the body enters the drawer seat, the moving terminal can be in conductive contact with the static terminal. When the body is pulled out of the drawer seat, the moving terminal is separated from the static terminal to disconnect the corresponding circuit.

[0003] The terminal (static terminal or dynamic terminal) includes two connection ends, one connection end is used to connect the lead wire, and the other connection end is used to plug in with another matching terminal. In some wiring terminals in the prior art, multiple terminals are of an integrated structure and are fixed to the mounting plate with screws. On the one hand, it is impossible to quickly replace the wiring terminals. On the other hand, when the terminal corresponding to one pole is damaged, the entire wiring terminal needs to be replaced, and the replacement cost is high. There are also some terminals in the prior art that are connected to the mounting plate by a snap-on connection, but the terminal is snap-on on one side of the mounting plate, so the lead wire can only be connected and the terminal can only be plugged in on one side of the mounting plate, which has great limitations; moreover, the connection firmness between the terminal and the mounting plate in the prior art is low, and it is easy to loosen after multiple plugging and separation actions, resulting in poor plugging between the terminals, affecting the performance of the circuit breaker.

[0004] Therefore, there is an urgent need for a terminal assembly and a circuit breaker to solve the above problems existing in the prior art. Utility Model Content

[0005] The utility model aims to provide a terminal assembly and a circuit breaker, which can improve the mounting firmness of the terminal on the mounting plate, and the connection of the lead wire on the terminal and the plugging between the terminals are not restricted by the mounting plate, thereby improving the rationality of the design.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] In one aspect, a terminal assembly is provided, comprising:

[0008] A wiring terminal, wherein two opposite sides of the wiring terminal are respectively connected with a first clamping structure and a second clamping structure;

[0009] The mounting plate is provided with a mounting cavity through it, and the wiring terminal is clamped with two opposite side walls of the mounting cavity through the first clamping structure and the second clamping structure.

[0010] As a preferred solution of the terminal assembly provided by the utility model, the two opposite side walls of the installation cavity are provided with a plurality of card slots, a card bulge is formed between two adjacent card slots, and the first card connection structure and the second card connection structure are respectively carded with the card slots on the corresponding sides.

[0011] As a preferred solution of the terminal assembly provided by the utility model, the first clamping structure includes two limiting grooves recessed at intervals on the wiring terminal, a limiting protrusion is formed between the two limiting grooves, the limiting protrusion is clamped in the clamping groove, and the limiting groove is clamped with the clamping protrusion; the second clamping structure includes a first buckle, and the first buckle is clamped with the clamping groove;

[0012] Alternatively, the first snap-fitting structure includes a second snap-fitting structure, the second snap-fitting structure includes a third snap-fitting structure, the second snap-fitting structure and the third snap-fitting structure are respectively engaged with the corresponding card slots, and the structures of the second snap-fitting structure and the third snap-fitting structure are the same or different.

[0013] As a preferred solution of the terminal assembly provided by the utility model, the first buckle and / or the second buckle and / or the third buckle include an elastic plate and a hook, and the hook includes a first cantilever and a first clamping head protruding from one end of the first cantilever;

[0014] One end of the elastic plate is bent and connected to the wiring terminal, and the other end is connected to an end of the first cantilever away from the first clamping head, and there is a gap between the elastic plate and the first cantilever and the wiring terminal; a first boss is protruded from the side of the elastic plate facing away from the wiring terminal, the first cantilever is clamped in the clamping groove, and the first boss and the first clamping head are respectively stopped at two side surfaces of the mounting plate.

[0015] As a preferred solution of the terminal assembly provided by the utility model, two hooks are arranged at intervals, a first engaging channel is formed between the first cantilevers of the two hooks, and the first engaging channel is engaged with the engaging protrusion.

[0016] As a preferred solution of the terminal assembly provided by the utility model, a first pressing plate is connected to a side of the elastic plate facing away from the connecting terminal, and the first pressing plate extends in a direction away from the connecting terminal.

[0017] As a preferred solution of the terminal assembly provided by the utility model, a pressing plate is connected to the side of the first pressing plate facing the elastic plate, and one end of the pressing plate away from the first pressing plate is connected to the elastic plate or the first boss.

[0018] As a preferred solution of the terminal assembly provided by the utility model, a first limiting spring piece is connected to a side of the elastic plate or the first cantilever facing the wiring terminal, and the first limiting spring piece extends obliquely toward the wiring terminal;

[0019] And / or, a second limiting spring piece is connected to a side of the connecting terminal facing the elastic plate, and the second limiting spring piece extends obliquely toward the elastic plate.

[0020] As a preferred solution of the terminal assembly provided by the utility model, the first clip and / or the second clip and / or the third clip include a second cantilever and a second pressing plate connected to each other, one end of the second cantilever away from the second pressing plate is bent and connected to the wiring terminal, and there is a gap between the second cantilever and the wiring terminal;

[0021] A second clamping head is protruded on one side of the second cantilever facing away from the connecting terminal, and second bosses are protruded on opposite sides of the second cantilever facing away from the connecting terminal, and the second bosses and the second cantilever are surrounded to form a clamping notch;

[0022] The second cantilever is clamped in the clamping groove, the clamping notch is clamped with the clamping protrusion, and the second clamping head and the second boss are respectively stopped at two side surfaces of the mounting plate.

[0023] As a preferred solution of the terminal assembly provided by the utility model, the first buckle and / or the second buckle and / or the third buckle include a third pressing plate and two third cantilevers arranged at intervals, one end of the two third cantilevers are bent and connected to the wiring terminal, and the other end is connected to the third pressing plate, and there is a gap between the third cantilever and the wiring terminal;

[0024] A third clamping head is protruded on a side of the third cantilever facing away from the connecting terminal, a third boss is provided between the two third cantilever arms, the third boss is protruded in a direction away from the connecting terminal relative to the third cantilever, and a second clamping channel is formed between the third boss and the two third cantilever arms;

[0025] The second clamping channel is engaged with the clamping protrusion, the third cantilever is clamped in the clamping groove, and the third clamping head and the third boss are respectively stopped at two side surfaces of the mounting plate.

[0026] On the other hand, a circuit breaker is provided, comprising a body and a drawer seat, wherein the body can move in and out of the drawer seat along a preset direction, and the body and the drawer seat are both provided with the terminal assembly as described above.

[0027] Beneficial effects of the utility model:

[0028] The utility model provides a terminal assembly and a circuit breaker including the terminal assembly, wherein the opposite sides of the terminal are respectively clamped with the inner side wall of the mounting cavity by a first clamping structure and a second clamping structure, which can improve the clamping stability of the terminal in the mounting cavity, ensure that the terminal is firmly connected to the mounting plate, avoid loosening, ensure that the terminals are still well plugged in after the circuit breaker is used for a long time, and the clamping method can realize the rapid disassembly and assembly of the terminal. In addition, since the mounting cavity passes through the mounting plate, the terminal is clamped in the mounting cavity, therefore, the structure for connecting the lead wire and the structure for plugging in another terminal can be designed on one side of the terminal, and the structure for connecting the lead wire and the structure for plugging in another terminal can also be designed on both sides of the terminal along the thickness direction of the mounting plate, which is not limited by the mounting plate and the design is more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a circuit breaker provided by a specific implementation method of the utility model;

[0030] Figure 2 It is a schematic diagram of a movable terminal assembly and a static terminal assembly provided in a specific embodiment of the utility model;

[0031] Figure 3 It is a plan view of a mounting plate provided in a specific embodiment of the utility model;

[0032] Figure 4 This is a first view of the static terminal provided by the specific embodiment of the utility model;

[0033] Figure 5 It is a schematic diagram of the clamping connection between the static terminal and the mounting plate provided in the specific implementation mode of the utility model;

[0034] Figure 6 It is a second view of the static terminal provided by the specific embodiment of the utility model;

[0035] Figure 7 This is a first view of the movable terminal provided in a specific embodiment of the utility model;

[0036] Figure 8 It is a schematic diagram of the clamping connection between the movable terminal and the mounting plate provided in a specific embodiment of the utility model;

[0037] Fig. 9 This is a second view of the movable terminal provided in the specific implementation mode of the utility model;

[0038] Fig.10 This is a first arrangement view of multiple static terminals provided in a specific embodiment of the utility model;

[0039] Fig.11 This is a second arrangement view of multiple static terminals provided in a specific embodiment of the utility model;

[0040] Fig.12 This is a first arrangement view of multiple movable terminals provided in a specific embodiment of the utility model;

[0041] Fig.13 This is a second arrangement view of multiple movable terminals provided in a specific embodiment of the utility model.

[0042] In the figure:

[0043] 1. Wiring terminal; 2. First clamping structure; 3. Second clamping structure; 4. Mounting plate;

[0044] 11. Static terminal housing; 12. Static contact piece; 13. Moving terminal housing; 14. Moving contact piece;

[0045] 21. Limiting groove; 22. Limiting protrusion; 23. Second buckle;

[0046] 231, second cantilever; 232, second pressing plate; 233, second clamping head; 234, second boss; 235, clamping notch; 2331, second guiding inclined surface;

[0047] 31. first buckle; 32. third buckle;

[0048] 311, elastic plate; 312, hook; 313, first boss; 314, first clamping channel; 315, first pressing plate; 316, pressing plate; 317, first limit spring;

[0049] 3121, first cantilever; 3122, first clamp; 31221, first guide slope;

[0050] 321, third pressing plate; 322, third cantilever; 323, third clamping head; 324, third boss; 325, second clamping channel; 3231, third guiding inclined plane;

[0051] 41. mounting cavity; 42. card slot; 43. card convex;

[0052] 100, main body; 200, drawer seat. DETAILED DESCRIPTION

[0053] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0054] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0056] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0057] like Figure 1 As shown, this embodiment provides a circuit breaker, specifically a drawer-type circuit breaker, which includes a body 100 and a drawer seat 200. The body 100 can move in and out of the drawer seat 200 along a preset direction, and terminal assemblies are provided on the body 100 and the drawer seat 200. When the body 100 moves in and out of the drawer seat 200, the terminal assemblies on the two are plugged in or separated.

[0058] Specifically, the terminal assembly installed on the drawer seat 200 is a static terminal assembly, and the terminal assembly installed on the body 100 is a dynamic terminal assembly. The dynamic terminal assembly moves with the body 100 to complete the connection and separation with the static terminal assembly.

[0059] For the convenience of explanation, the preset direction is defined as the X direction, that is, the body 100 moves along the X direction; meanwhile, the X direction is also the front-back direction of the circuit breaker. The left-right direction of the circuit breaker is defined as the Y direction, and the height direction of the circuit breaker is defined as the Z direction.

[0060] like Figure 2 As shown, it is a schematic diagram of the structure of the terminal assembly provided in this embodiment, wherein the upper terminal assembly is a static terminal assembly and the lower terminal assembly is a dynamic terminal assembly.

[0061] The terminal assembly includes a terminal 1 and a mounting plate 4, and the mounting plate 4 is used to mount and fix the terminal 1. For the above-mentioned static terminal assembly, the terminal 1 on its mounting plate 4 is a static terminal, and for the above-mentioned dynamic terminal assembly, the terminal 1 on its mounting plate 4 is a dynamic terminal.

[0062] See also Figure 2 The first clamping structure 2 and the second clamping structure 3 are connected to the two opposite sides of the terminal 1, respectively. Figure 3 A mounting cavity 41 is provided on the mounting plate 4 along the thickness direction (Z direction), and the opposite sides of the wiring terminal 1 are respectively clamped with the opposite side walls of the mounting cavity 41 through the first clamping structure 2 and the second clamping structure 3, which can improve the clamping stability of the wiring terminal 1 in the mounting cavity 41, ensure that the wiring terminal 1 is firmly connected to the mounting plate 4 to avoid loosening, and ensure that the wiring terminals 1 are still well plugged in after the circuit breaker is used for a long time, and the clamping method can realize the rapid disassembly and assembly of the wiring terminal 1.

[0063] In addition, since the mounting cavity 41 passes through the mounting plate 4 and the terminal 1 is snapped into the mounting cavity 41, the structure for connecting the lead wires and the structure for plugging in another terminal 1 can be designed on one side of the terminal 1 (in this case, the connection of the lead wires and the plugging in between the terminal 1s are both performed on one side of the mounting plate 4), or the structure for connecting the lead wires and the structure for plugging in another terminal 1 can be designed on both sides of the terminal 1 along the thickness direction of the mounting plate 4 (in this case, the connection of the lead wires and the plugging in between the terminal 1s are respectively performed on both sides of the mounting plate 4). It is not limited by the mounting plate 4 and can be designed according to needs.

[0064] In this embodiment, refer to Figure 2 In the orientation, the upper side of the terminal block 1 on the static terminal assembly is used to connect the lead wire, and the lower side is used to plug with the terminal block 1 on the moving terminal assembly; the upper side of the terminal block 1 on the moving terminal assembly is used to plug with the terminal block 1 on the static terminal assembly, and the lower side is used to connect the lead wire.

[0065] See also Figure 2 and Figure 3 The mounting cavity 41 extends along the Y direction, and a plurality of connection terminals 1 are arranged inside the cavity 41 along the Y direction. That is, a plurality of static terminals and a plurality of dynamic terminals are arranged along the Y direction, and the plurality of static terminals and the plurality of dynamic terminals can be plugged in one-to-one correspondence.

[0066] See also Figure 2 and Figure 3The two opposite side walls of the installation cavity 41 are each provided with a plurality of slots 42, and a protrusion 43 is formed between two adjacent slots 42. The first engaging structure 2 and the second engaging structure 3 are both engaged with the slots 42, and the inner wall of the slots 42 can limit the displacement of the wiring terminal 1 along its arrangement direction, ensuring that each wiring terminal 1 can be firmly installed in the installation position, and can improve the installation firmness and stability of the wiring terminal 1 on the installation plate 4.

[0067] The following combination Figures 4 to 6 The clamping structure between the static terminal and the mounting plate 4 provided in this embodiment is described.

[0068] The terminal block 1 comprises a housing and a contact piece mounted on the housing, the contact piece is used for conducting electricity, for example, it is made of copper material, and the housing is made of insulating material, for example, plastic. Figure 4 and Figure 6 The static terminal includes a static terminal housing 11 and a static contact piece 12 disposed in the static terminal housing 11. The static contact piece 12 is used for connecting an external lead on one hand, and for plugging with the dynamic terminal on the other hand.

[0069] See also Figure 3 , Figure 4 and Figure 5 The first clamping structure 2 on the static terminal includes two limiting grooves 21 recessed at intervals on the static terminal housing 11, a limiting protrusion 22 is formed between the two limiting grooves 21, the limiting protrusion 22 is clamped in the clamping groove 42, and the limiting groove 21 is clamped with the clamping protrusion 43. That is, the two limiting grooves 21 and the limiting protrusion 22 in the middle are clamped with the two clamping protrusions 43 on the mounting plate 4 and the clamping groove 42 between the two clamping protrusions 43, and the clamping stability is high.

[0070] Furthermore, the limiting groove 21 has two groove walls that are opposite to each other along the Z direction, and the two groove walls limit the movement of the static terminal along the Z direction.

[0071] See also Figure 4 and Figure 5 The second clamping structure 3 on the static terminal includes a first clamping buckle 31, and the first clamping buckle 31 is clamped with the clamping slot 42. When installing the static terminal, one side of it cooperates with the clamping protrusion 43 and the clamping slot 42 through the limiting groove 21 and the limiting protrusion 22, and the other side is clamped with the clamping slot 42 through the first clamping buckle 31, so that the disassembly and assembly are fast and convenient.

[0072] Specifically, see Figure 5 and Figure 6The first clip 31 includes an elastic plate 311 and a hook 312. The hook 312 includes a first cantilever 3121 and a first clamp 3122 protruding from one end of the first cantilever 3121. One end of the elastic plate 311 is bent and connected to the static terminal housing 11, and the other end is connected to the end of the first cantilever 3121 away from the first clamp 3122. There is a gap between the elastic plate 311 and the first cantilever 3121 and the static terminal housing 11, and the gap enables the elastic plate 311 to be elastically deformed relative to the static terminal housing 11. The first clip 31 also includes a U-shaped connecting plate, the opening of the U-shaped connecting plate faces the static terminal housing 11, one end of the U-shaped connecting plate is connected to the static terminal housing 11, and the other end is connected to the end of the elastic plate 311 away from the first cantilever 3121, so as to realize the bending connection between the elastic plate 311 and the static terminal housing 11.

[0073] A first boss 313 is protruded from one side of the elastic plate 311 facing away from the connecting terminal 1. The first cantilever 3121 is clamped in the clamping groove 42. The first boss 313 and the first clamping head 3122 are respectively stopped at two side surfaces of the mounting plate 4. Figure 5 In the orientation, the first buckle 31 is inserted into the slot 42 downward along the Z direction, and the first clamping head 3122 is spaced below the first boss 313. During the clamping process, the first clamping head 3122 is squeezed by the inner wall of the slot 42, causing the elastic plate 311 and the first cantilever 3121 to elastically deform. After the first clamping head 3122 completely passes through the slot 42, the elastic plate 311 and the first cantilever 3121 restore their deformation, and the first boss 313 and the first clamping head 3122 are hooked on the upper and lower sides of the mounting plate 4 to limit the movement of the static terminal along the Z direction.

[0074] See also Figure 5 and Figure 6 A first guiding inclined surface 31221 is provided on a side of the first clamping head 3122 facing away from the static terminal housing 11 , so that the bottom of the first clamping head 3122 forms a pointed end, which facilitates smooth engagement with the clamping slot 42 .

[0075] In an alternative embodiment, see Figure 6 Two hooks 312 are arranged at intervals along the Y direction. The first cantilevers 3121 of the two hooks 312 are connected to the elastic plate 311, and a first clamping channel 314 is formed between the two first cantilevers 3121. The first clamping channel 314 is clamped with the clamping protrusion 43, and the two first cantilevers 3121 are respectively clamped with the two clamping grooves 42 on both sides of the clamping protrusion 43 to ensure the clamping firmness. The limiting protrusion 22 can be opposite to the first clamping channel 314 in the X direction, and the two hooks 312 are opposite to the two limiting grooves 21 in the X direction. At this time, the clamping groove 42 on one side of the installation cavity 41 is arranged opposite to the clamping protrusion 43 on the other side in the X direction.

[0076] In other embodiments, only one hook 312 may be provided, and the hook 312 may be directly opposite to the limiting protrusion 22 . In this case, the slot 42 on one side of the installation cavity 41 and the slot 42 on the other side are directly opposite to each other in the X direction.

[0077] See also Figure 5 and Figure 6 , the side of the elastic plate 311 facing away from the terminal 1 is connected to the first pressing plate 315, and the first pressing plate 315 extends in the direction away from the terminal 1. When the first buckle 31 is released, by pressing down the first pressing plate 315, the elastic plate 311 drives the hook 312 to move in the direction close to the static terminal housing 11, so as to disengage from the card slot 42, and the release is achieved, which is convenient for operation. Furthermore, the first pressing plate 315 extends in an arc shape, and the arc convex surface faces the elastic plate 311, or the first pressing plate 315 can also be a flat plate inclined relative to the elastic plate 311, and the shape of the first pressing plate 315 is not limited here.

[0078] Optionally, a pressing plate 316 is connected to one side of the first pressing plate 315 facing the elastic plate 311, and one end of the pressing plate 316 away from the first pressing plate 315 is connected to the elastic plate 311 or the first boss 313. The pressing plate 316 in this embodiment is connected to the first boss 313, which makes it easier to elastically deform the elastic plate 311 when pressing down the first pressing plate 315. Moreover, the setting of the pressing plate 316 can improve the strength of the entire first buckle 31 and reduce deformation.

[0079] In one embodiment, see Figure 5 and Figure 6 A first limiting spring piece 317 is connected to the side of the first cantilever 3121 facing the terminal 1, and the first limiting spring piece 317 extends obliquely toward the terminal 1. The first limiting spring piece 317 can provide a certain supporting force to prevent the elastic plate 311 from elastically deforming toward the static terminal housing 11 after the first clip 31 is engaged, so that the elastic plate 311 and the first cantilever 3121 are kept on the outside, ensuring that the hook 312 is well engaged with the slot 42, and preventing the first clip 31 from detaching from the slot 42.

[0080] Alternatively, the first limiting spring piece 317 may also be connected to the elastic plate 311 .

[0081] In other embodiments, a second limiting spring piece may be connected to the side of the static terminal housing 11 facing the elastic plate 311, and the second limiting spring piece may extend obliquely toward the elastic plate 311, and the elastic plate 311 and the first cantilever 3121 may also be kept on the outside to ensure that the hook 312 is well engaged with the slot 42. Alternatively, a first limiting spring piece 317 may be provided on the first cantilever 3121 or the elastic plate 311, and a second limiting spring piece may be provided on the static terminal housing 11 at the same time.

[0082] Optionally, the static terminal housing 11, the first clamping structure 2, and the second clamping structure 3 are integrally formed, which has high strength and fast forming. Figure 4 The limiting protrusion 22, the limiting groove 21 and the first buckle 31 are shown in FIG.

[0083] The following combination Figures 7 to 9 The clamping structure between the movable terminal and the mounting plate 4 provided in this embodiment is described.

[0084] See also Figure 7 The moving terminal includes a moving terminal housing 13 and a moving contact piece 14 disposed in the moving terminal housing 13. The moving contact piece 14 is used for connecting the lead wire on one hand, and for plugging with the static contact piece 12 of the static terminal on the other hand.

[0085] See also Figure 7 , Figure 8 as well as Fig. 9 The first clamping structure 2 on the static terminal includes a second clamping buckle 23, and the second clamping structure 3 on the static terminal includes a third clamping buckle 32. The second clamping buckle 23 and the third clamping buckle 32 are respectively engaged with the clamping grooves 42 on both sides of the installation cavity 41 to achieve rapid disassembly and assembly of the static terminal. The structures of the second clamping buckle 23 and the third clamping buckle 32 can be the same or different. Figures 7 to 9 The second buckle 23 and the third buckle 32 shown in FIG. 1 have different structures.

[0086] Specifically, combined Figure 3 , Figure 7 as well as Figure 8 The second buckle 23 includes a second cantilever 231 and a second pressing plate 232 connected to each other. One end of the second cantilever 231 away from the second pressing plate 232 is bent and connected to the wiring terminal 1, and there is a gap between the second cantilever 231 and the wiring terminal 1, and the gap enables the second cantilever 231 to elastically deform relative to the movable terminal housing 13. When the second pressing plate 232 is pressed, the second cantilever 231 can be elastically deformed. Figure 8 In the middle position, the second buckle 23 and the third buckle 32 are both inserted into the mounting cavity 41 upward along the Z direction and engaged with the slot 42.

[0087] A second clamping head 233 is protruded on one side of the second cantilever 231 facing away from the connection terminal 1, and second bosses 234 are protruded on opposite sides of the second cantilever 231 in a direction facing away from the connection terminal 1. The second bosses 234 are spaced below the second clamping head 233. The second bosses 234 and the second cantilever 231 are surrounded to form a clamping notch 235, that is, a clamping notch 235 is formed on both sides of the second cantilever 231.

[0088] When the second clip 23 is inserted into the slot 42, the second clip head 233 is squeezed by the inner wall of the slot 42, causing the second cantilever 231 to elastically deform. When the second clip head 233 completely passes through the slot 42, the second cantilever 231 resumes its deformation. At this time, the second cantilever 231 is clamped in the slot 42, the clamping notch 235 is engaged with the clamping protrusion 43, and the second clip head 233 and the second protrusion 234 are respectively hooked and stopped on the two side surfaces of the mounting plate 4, limiting the second clip 23 from moving up and down along the Z direction.

[0089] Furthermore, a second guiding inclined surface 2331 is provided on a side of the second clamping head 233 facing away from the movable terminal housing 13 , so that the upper end of the second clamping head 233 forms a pointed tip, which makes it easier to engage with the clamping slot 42 .

[0090] When the second buckle 23 is unlocked, the second pressing plate 232 is pressed inwardly to elastically deform the second cantilever 231 to move away from the slot 42 . Meanwhile, the second clamping head 233 and the second boss 234 no longer hook the two sides of the mounting plate 4 , thus achieving unlocking.

[0091] Combination Figure 3 , Figure 8 as well as Fig. 9 The third buckle 32 includes a third pressing plate 321 and two third cantilevers 322 arranged at intervals. One end of the two third cantilevers 322 is bent and connected to the wiring terminal 1, and the other end is connected to the third pressing plate 321. There is a gap between the third cantilever 322 and the wiring terminal 1, and the gap enables the third cantilever 322 to elastically deform the movable terminal housing 13. When the third pressing plate 321 is pressed, the third cantilever 322 can be elastically deformed.

[0092] A third clamping head 323 is protruded on the side of the third cantilever 322 facing away from the connection terminal 1, and a third boss 324 is provided between the two third cantilever arms 322. The third boss 324 is arranged at intervals just below the third clamping head 323. The third boss 324 is protruded relative to the third cantilever 322 in the direction facing away from the connection terminal 1, and a second clamping channel 325 is formed between the third boss 324 and the two third cantilever arms 322.

[0093] When the third clip 32 is inserted into the slot 42, the second clip channel 325 is opposite to and engaged with the clip protrusion 43, and the third clip head 323 is squeezed by the inner wall of the slot 42 to elastically deform the third cantilever 322. When the third clip head 323 completely passes through the slot 42, the third cantilever 322 resumes its deformation. At this time, the third cantilever 322 is clamped in the slot 42, and the third clip head 323 and the third protrusion 324 are respectively hooked and stopped on the two side surfaces of the mounting plate 4, thereby limiting the third clip 32 from moving up and down along the Z direction.

[0094] Furthermore, a third guiding inclined surface 3231 is provided on a side of the third clamping head 323 facing away from the movable terminal housing 13 , so that the upper end of the third clamping head 323 forms a pointed tip, which makes it easier to engage with the clamping slot 42 .

[0095] When the third buckle 32 is unlocked, the third pressing plate 321 is pressed inwardly to elastically deform the third cantilever 322 to move away from the slot 42 . Meanwhile, the third clamping head 323 and the third boss 324 no longer hook the two sides of the mounting plate 4 , thus achieving unlocking.

[0096] The second cantilever 231 of the second buckle 23 faces the second engaging channel 325 of the third buckle 32, and the two engaging notches 235 face the two third cantilevers 322. At this time, the engaging groove 42 on one side of the installation cavity 41 faces the engaging protrusion 43 on the other side.

[0097] Optionally, the movable terminal housing 13, the first clamping structure 2, and the second clamping structure 3 are integrally formed, which has high strength and fast forming. Figure 7 The second buckle 23 and the third buckle 32 are shown in FIG.

[0098] Of course, the second buckle 23 can also be used with Fig. 9 The structure of the third buckle 32 is consistent with that of the third buckle 32 shown in FIG. Figure 7 Alternatively, the second buckle 23 and the third buckle 32 may also be configured as follows: Figure 6 The structure of the first buckle 31 shown is consistent.

[0099] In some embodiments, the first buckle 31 on the static terminal housing 11 may be the structure of the second buckle 23 or the structure of the third buckle 32 .

[0100] In some embodiments, the second buckle 23 and the third buckle 32 may be respectively disposed on both sides of the static terminal housing 11 .

[0101] In some embodiments, a limiting groove 21 and a limiting protrusion 22 may be provided on one side of the movable terminal housing 13, and a first buckle 31 may be provided on the other side of the movable terminal housing 13. The structure of the first buckle 31 may be as follows: Figure 6 The structure shown can also be Figure 7 The structure of the second buckle 23 is consistent with that shown in FIG. Fig. 9 The structure of the third buckle 32 shown is consistent.

[0102] See also Fig.10 and Fig.11 , is a schematic diagram of the arrangement of multiple static terminals along the Y direction provided in this embodiment. Fig.10The limiting grooves 21 on the two adjacent static terminal housings 11 are directly opposite to and engage with the same clamping protrusion 43, and the size of the limiting groove 21 along the Y direction is half of the size of the clamping protrusion 43 along the Y direction. Fig.11 The hooks 312 on two adjacent static terminal housings 11 are in contact with each other, and the first cantilevers 3121 of the two contacting hooks 312 are jointly engaged in the same slot 42, and the total width of the two first cantilevers 3121 is consistent with the size of the slot 42 along the Y direction.

[0103] See also Fig.12 and Fig.13 , is a schematic diagram of the arrangement of multiple movable terminals along the Y direction provided in this embodiment. Fig.12 The second bosses 234 on two adjacent movable terminal housings 13 are in contact with each other, and the size of the two in contact second bosses 234 along the Y direction is consistent with the size of the clamping protrusion 43 along the Y direction. Fig.13 The third cantilevers 322 on two adjacent movable terminal housings 13 are close to each other and are commonly engaged in the same slot 42 . The total width of the two third cantilevers 322 is consistent with the size of the slot 42 along the Y direction.

[0104] As mentioned above, both ends of multiple static terminals are respectively clamped on the corresponding mounting plate 4 through the first clamping structure 2 and the second clamping structure 3, and both ends of multiple dynamic terminals are respectively clamped on the corresponding mounting plate 4 through the first clamping structure 2 and the second clamping structure 3. When a static terminal or a dynamic terminal is damaged, only the static terminal or dynamic terminal at the corresponding position can be replaced without replacing the entire row of static terminals or dynamic terminals, thereby reducing the scrap cost during replacement.

[0105] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A terminal assembly, characterized in that: include: A wiring terminal (1), wherein two opposite sides of the wiring terminal (1) are respectively connected to a first clamping structure (2) and a second clamping structure (3); The mounting plate (4) is provided with a mounting cavity (41) extending therethrough, and the wiring terminal (1) is clamped with opposite side walls of the mounting cavity (41) via the first clamping structure (2) and the second clamping structure (3).

2. The terminal assembly according to claim 1, characterized in that: The opposite side walls of the installation cavity (41) are each provided with a plurality of clamping grooves (42), a clamping protrusion (43) is formed between two adjacent clamping grooves (42), and the first clamping structure (2) and the second clamping structure (3) are respectively clamped with the clamping grooves (42) on the corresponding side.

3. The terminal assembly according to claim 2, characterized in that: The first clamping structure (2) comprises two limiting grooves (21) recessed on the wiring terminal (1) at intervals, a limiting protrusion (22) is formed between the two limiting grooves (21), the limiting protrusion (22) is clamped in the clamping groove (42), and the limiting groove (21) is clamped with the clamping protrusion (43); the second clamping structure (3) comprises a first buckle (31), and the first buckle (31) is clamped with the clamping groove (42); Alternatively, the first snap-fitting structure (2) comprises a second snap-fitting structure (23), the second snap-fitting structure (3) comprises a third snap-fitting structure (32), the second snap-fitting structure (23) and the third snap-fitting structure (32) are respectively snap-fitted with the corresponding snap-fitting groove (42), and the structures of the second snap-fitting structure (23) and the third snap-fitting structure (32) are the same or different.

4. The terminal assembly according to claim 3, characterized in that: The first buckle (31) and / or the second buckle (23) and / or the third buckle (32) comprise an elastic plate (311) and a hook (312); the hook (312) comprises a first cantilever (3121) and a first clamping head (3122) protruding from one end of the first cantilever (3121); one end of the elastic plate (311) is bent and connected to the wiring terminal (1), and the other end is connected to an end of the first cantilever (3121) away from the first clamping head (3122); there is a gap between the elastic plate (311) and the first cantilever (3121) and the wiring terminal (1); A first boss (313) is protruding from the side of the elastic plate (311) facing away from the connecting terminal (1); the first cantilever (3121) is clamped in the clamping groove (42); and the first boss (313) and the first clamping head (3122) are respectively stopped on two side surfaces of the mounting plate (4).

5. The terminal assembly according to claim 4, characterized in that: Two of the hooks (312) are arranged at intervals, and a first engaging channel (314) is formed between the first cantilevers (3121) of the two hooks (312), and the first engaging channel (314) is engaged with the engaging protrusion (43).

6. The terminal assembly according to claim 4, characterized in that: A first pressing plate (315) is connected to a side of the elastic plate (311) facing away from the connecting terminal (1), and the first pressing plate (315) extends in a direction away from the connecting terminal (1).

7. The terminal assembly according to claim 6, characterized in that: A pressing plate (316) is connected to one side of the first pressing plate (315) facing the elastic plate (311), and one end of the pressing plate (316) away from the first pressing plate (315) is connected to the elastic plate (311) or the first boss (313).

8. The terminal assembly according to claim 4, characterized in that: A first limiting spring piece (317) is connected to the side of the elastic plate (311) or the first cantilever (3121) facing the connecting terminal (1), and the first limiting spring piece (317) extends obliquely toward the connecting terminal (1); And / or, a second limiting spring piece is connected to a side of the connection terminal (1) facing the elastic plate (311), and the second limiting spring piece extends obliquely toward the elastic plate (311).

9. The terminal assembly according to claim 3, characterized in that: The first buckle (31) and / or the second buckle (23) and / or the third buckle (32) comprise a second cantilever (231) and a second pressing plate (232) connected to each other, one end of the second cantilever (231) away from the second pressing plate (232) is bent and connected to the wiring terminal (1), and a gap exists between the second cantilever (231) and the wiring terminal (1); A second clamping head (233) is protrudingly provided on one side of the second cantilever (231) facing away from the connecting terminal (1), and second bosses (234) are protrudingly provided on opposite sides of the second cantilever (231) in a direction facing away from the connecting terminal (1), and the second bosses (234) and the second cantilever (231) are surrounded to form a clamping notch (235); The second cantilever (231) is clamped in the clamping groove (42), the clamping notch (235) is clamped with the clamping protrusion (43), and the second clamping head (233) and the second boss (234) are respectively stopped on two side surfaces of the mounting plate (4).

10. The terminal assembly according to claim 3, characterized in that: The first buckle (31) and / or the second buckle (23) and / or the third buckle (32) comprises a third pressing plate (321) and two third cantilevers (322) arranged at intervals, one end of the two third cantilevers (322) is bent and connected to the wiring terminal (1), and the other end is connected to the third pressing plate (321), and there is a gap between the third cantilever (322) and the wiring terminal (1); A third clamping head (323) is protrudingly provided on the side of the third cantilever (322) facing away from the connecting terminal (1); a third boss (324) is provided between the two third cantilever arms (322); the third boss (324) is protruding in a direction away from the connecting terminal (1) relative to the third cantilever arm (322); a second clamping channel (325) is formed between the third boss (324) and the two third cantilever arms (322); The second clamping channel (325) is clamped with the clamping protrusion (43), the third cantilever (322) is clamped in the clamping groove (42), and the third clamping head (323) and the third boss (324) are respectively stopped on two side surfaces of the mounting plate (4).

11. A circuit breaker, characterized in that It comprises a body (100) and a drawer seat (200), wherein the body (100) can move in and out of the drawer seat (200) along a preset direction, and the body (100) and the drawer seat (200) are both provided with a terminal assembly according to any one of claims 1 to 10.

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