Pole connection device

Abstract

The utility model provides a pole connection device, and relates to the technical field of low-voltage electric appliances, the pole connection device comprises a plurality of circuit breakers which are sequentially arranged along a first direction, each circuit breaker is also connected with a pole connection terminal, the pole connection terminals are positioned on the opposite sides of the circuit breakers provided with handles along a second direction, the plurality of pole connection terminals are sequentially clamped, and the first direction is perpendicular to the second direction. When the circuit breaker of any pole is replaced, only the circuit breaker needs to be independently disassembled and assembled, and disassembly and assembly are convenient. The pole connection terminal is located on the side, opposite to the handle, of the circuit breaker in the second direction, the handle is generally located at the top of the circuit breaker, the pole connection terminal is located at the bottom of the circuit breaker, and when the circuit breaker is connected with the pole connection terminal, the space at the bottom of the circuit breaker can be utilized, so that the space layout of the pole connection device is compact, and the pole connection device can be applied to miniaturization scene requirements.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a pole-connecting device. Background Art

[0002] In current circuit breaker equipment, circuit breakers often do not appear in the form of a single circuit breaker, but multiple circuit breakers are arranged side by side to form a pole-linked circuit breaker; accordingly, to adapt to this, the terminals connected to the circuit breaker also exist in a multiple pole-linked manner. In this way, the multiple circuit breakers and multiple terminals of the pole-linked form an integral structure, which is inconvenient during disassembly and assembly; if one of the circuit breakers and terminals needs to be replaced, all circuit breakers and terminals often need to be removed, making replacement difficult. Utility Model Content

[0003] The purpose of the present application is to provide a pole coupling device to address the deficiencies in the above-mentioned prior art, which can replace the circuit breaker and terminal of any pole separately and is easy to disassemble and assemble.

[0004] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0005] According to one aspect of an embodiment of the present application, a pole-coupling device is provided, comprising a plurality of circuit breakers arranged in sequence along a first direction, each of the circuit breakers being further connected to a pole-coupling terminal, the pole-coupling terminal being located on the opposite side of a handle of the circuit breaker along a second direction, the plurality of pole-coupling terminals being arranged in sequence by snap-connection, and the first direction being perpendicular to the second direction.

[0006] Optionally, a first clamping portion and a second clamping portion are respectively provided on both sides of the pole-bonding terminal along the first direction, and two adjacent pole-bonding terminals are clamped by their respective first clamping portion and second clamping portion.

[0007] Optionally, the first clamping portion includes a first clamping slot and / or a first clamping protrusion, the second clamping portion includes a second clamping slot and / or a second clamping protrusion, the first clamping slot and the second clamping protrusion are adapted, and / or the first clamping protrusion and the second clamping slot are adapted.

[0008] Optionally, the pole-binding terminal is provided with a first limiting surface, the circuit breaker is provided with a first contact surface, the circuit breaker and the pole-binding terminal are snap-connected, and the first contact surface is contacted and limited with the first limiting surface in the second direction.

[0009] Optionally, a contact position protruding toward the circuit breaker is provided on the first limiting surface, and the contact position is adaptably connected to the wiring portion of the circuit breaker; the first clamping portion and the second clamping portion are arranged in parallel, and the contact position is perpendicular to the connection direction of the first clamping portion and the second clamping portion.

[0010] Optionally, a second limiting surface is provided on the contact position, a groove is provided on the circuit breaker, the wiring portion is located in the groove, and the groove wall of the groove forms a second contact surface. When the pole-connecting terminal and the circuit breaker are engaged, the contact position extends into the groove to contact and limit in the first direction through the second limiting surface and the second contact surface.

[0011] Optionally, it further includes a guide rail, a plurality of the pole-binding terminals are arranged side by side on the guide rail, the circuit breaker is clamped with the pole-binding terminals, and the pole-binding terminals are clamped with the guide rail; or, the circuit breaker and the pole-binding terminals are clamped with the guide rail respectively.

[0012] Optionally, when the pole-link terminal and the guide rail are clamped together, the pole-link terminal includes a clamping portion to clamp together with the guide rail; the clamping portion includes claws arranged on both sides of the pole-link terminal along a third direction, and both sides of the guide rail respectively have abutment portions adapted to the claws, and the pole-link terminal is clamped together with the guide rail by clamping the claws with the abutment portions, and the third direction is perpendicular to the first direction and the second direction respectively.

[0013] Optionally, when the circuit breaker and the guide rail are engaged, the circuit breaker includes a buckle to engage with the guide rail; the buckle is located on the opposite side of the circuit breaker where the handle is set, and is slidably set with the circuit breaker, and the guide rail is provided with an abutment portion along a third direction, and the buckle is pushed to abut against the abutment portion to engage the circuit breaker and the guide rail, and the third direction is perpendicular to the first direction and the second direction respectively.

[0014] Optionally, the guide rail has a U-shaped cross-section, and the abutment portion includes an extension arm extending from an opening of the U-shape along the third direction.

[0015] The beneficial effects of this application include:

[0016] The present application provides a pole-link device, wherein a plurality of pole-link terminals are arranged in sequence along a first direction, and adjacent pole-link terminals are mutually clamped and arranged, and a circuit breaker is also connected to each pole-link terminal, so that a plurality of circuit breakers are arranged in sequence along the first direction to form a multi-pole circuit breaker; when replacing any pole circuit breaker, it is only necessary to disassemble and assemble the circuit breaker separately, which is convenient for disassembly and assembly. The pole-link terminal is located on the opposite side of the circuit breaker handle along the second direction, and the handle is generally located at the top of the circuit breaker, and the pole-link terminal is located at the bottom of the circuit breaker, so that when the circuit breaker and the pole-link terminal are connected, the space at the bottom of the circuit breaker can be used, so that the spatial layout of the pole-link device is compact, and it can be applied to miniaturized scene requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 One of the structural schematic diagrams of a polar coupling device provided in an embodiment of the present application;

[0019] Figure 2 A circuit breaker and a terminal adaptation diagram of a pole-coupling device provided in an embodiment of the present application;

[0020] Figure 3 A second structural diagram of a polar coupling device provided in an embodiment of the present application;

[0021] Figure 4 One of the schematic diagrams of the structure of the pole-connecting terminals of a pole-connecting device provided in an embodiment of the present application;

[0022] Figure 5 A second schematic diagram of the structure of a pole-connecting terminal of a pole-connecting device provided in an embodiment of the present application;

[0023] Figure 6 A schematic diagram of a guide rail structure of a pole coupling device provided in an embodiment of the present application;

[0024] Figure 7 A schematic diagram of the circuit breaker structure of a pole-connecting device provided in an embodiment of the present application.

[0025] Icon: 10-circuit breaker; 10a-clip; 101-clip slot; 102-first contact surface; 103-recess; 104-second contact surface; 20-pole terminal; 201-first clamping part; 2011-first clamping protrusion; 2012-first clamping slot; 201a-rectangular clamping protrusion; 201b-rectangular block; 202-second clamping part; 2021-second clamping slot; 2022-second clamping protrusion ; 202a- dovetail groove; 202b- limiting groove; 202c- rectangular groove; 202d- guide end; 30- guide rail; 203- contact position; 2030- raised block; 203a- second limiting surface; 204- clamping part; 204a- clamping claw; 205- first limiting surface; 30a- abutment part; 301- extension arm; F1- first direction; F2- second direction; F3- third direction. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. It should be noted that, in the absence of conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the scope of protection of the present application.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In one aspect of the embodiment of the present application, referring to Figure 1, a pole-binding device is provided, comprising a plurality of circuit breakers 10 arranged in sequence along a first direction F1, each circuit breaker 10 is also connected to a pole-binding terminal 20, for example, the circuit breaker 10 and the pole-binding terminal 20 are snap-fitted; the pole-binding terminal 20 is located on the opposite side of the circuit breaker 10 where the handle is set along a second direction F2, and the plurality of pole-binding terminals 20 are snap-fitted in sequence, and the first direction F1 and the second direction F2 are perpendicular.

[0033] like Figure 2 , Figure 3 As shown, in the first direction F1, a plurality of circuit breakers 10 and a plurality of pole-binding terminals 20 are arranged in a row, and a plurality of pole-binding terminals 20 are sequentially snap-fitted, and the circuit breakers 10 correspond to the pole-binding terminals 20 one by one, and the circuit breakers 10 are snap-fitted to the pole-binding terminals 20. In this way, when the circuit breaker 10 needs to be disassembled, it is only necessary to release the snap-fitting between the circuit breaker 10 and the pole-binding terminal 20, and the circuit breaker 10 can be conveniently removed from the pole-binding terminal 20 without affecting other circuit breakers 10 and pole-binding terminals 20.

[0034] In the present application, the pole-binding terminal 20 is located on the opposite side of the handle of the circuit breaker 10 along the second direction F2, and the second direction F2 is the height direction of the circuit breaker 10; for example, a protrusion is formed on the top of the circuit breaker 10, and the handle is located at the protruding position of the top of the circuit breaker 10; the bottom of the circuit breaker 10 forms a depression concave toward the top, and the pole-binding terminal 20 extends into the depression of the circuit breaker 10 to engage with the bottom of the circuit breaker 10; the arrangement of the pole-binding terminal 20 connected to the bottom of the circuit breaker 10 can reduce the space occupied by the pole-binding device, making the structure of the pole-binding device compact.

[0035] Therefore, in the pole-binding device provided in the embodiment of the present application, a plurality of pole-binding terminals 20 are arranged in sequence along the first direction F1, and adjacent pole-binding terminals 20 are arranged in mutual engagement. A circuit breaker 10 is also connected to each pole-binding terminal 20, so that a plurality of circuit breakers 10 are arranged in sequence along the first direction F1 to form a multi-pole circuit breaker 10; the circuit breaker 10 is connected to the pole-binding terminal 20, and when replacing any pole circuit breaker 10, it is only necessary to disassemble and assemble the circuit breaker 10 separately, which is convenient for disassembly and assembly. The pole-binding terminal 20 is located on the opposite side of the handle of the circuit breaker 10 along the second direction F2, and the handle is generally located at the top of the circuit breaker 10, and the pole-binding terminal 20 is located at the bottom of the circuit breaker 10, so that when the circuit breaker 10 and the pole-binding terminal 20 are connected, the space at the bottom of the circuit breaker 10 can be used to make the spatial layout of the pole-binding device compact, which can be applied to miniaturized scene requirements.

[0036] like Figure 4 , Figure 5 As shown, a plurality of pole-bonding terminals 20 are arranged to be connected to each other, and a first connecting portion 201 and a second connecting portion 202 are respectively provided on both sides of the pole-bonding terminal 20 along the first direction F1 , and two adjacent pole-bonding terminals 20 are connected by their respective first connecting portion 201 and second connecting portion 202 .

[0037] A first clamping portion 201 and a second clamping portion 202 are respectively provided on both sides of each pole-binding terminal 20. Among two adjacent pole-binding terminals 20, the first clamping portion 201 of one pole-binding terminal 20 and the second clamping portion 202 of the other pole-binding terminal 20 are adapted to be clamped, so that multiple pole-binding terminals 20 can be clamped in sequence.

[0038] In one embodiment of the present application, the first clamping portion 201 includes a first clamping slot 2012 and / or a first clamping protrusion 2011, and the second clamping portion 202 includes a second clamping slot 2021 and / or a second clamping protrusion 2022, the first clamping slot 2012 and the second clamping protrusion 2022 are adapted to each other, and / or the first clamping protrusion 2011 and the second clamping slot 2021 are adapted to each other.

[0039] For example, the second engaging groove 2021 is a dovetail groove 202a, a limiting groove 202b, and a rectangular groove 202c which are connected in sequence, and the first engaging protrusion 2011 is a rectangular engaging protrusion 201a and a rectangular block 201b arranged below the rectangular engaging protrusion 201a. The rectangular engaging protrusion 201a is inserted into the dovetail groove 202a and is clamped and limited by the limiting groove 202b; at the same time, the rectangular block 201b extends into the rectangular groove 202c to engage, thereby realizing the engagement of the second engaging groove 2021 and the first engaging protrusion 2011.

[0040] In addition, a rectangular rod is provided in the rectangular groove 202c as the second locking protrusion 2022; correspondingly, a circular groove is formed on the rectangular block 201b as the first locking groove 2012, and the rectangular rod extends into the circular groove to achieve the engagement between the second locking protrusion 2022 and the first locking groove 2012. The end of the rectangular rod also forms a hexahedral guide end 202d, and the guide end 202d of the rectangular rod can serve as a guide for the rectangular rod to extend into the circular groove.

[0041] The adaptation mode of the first latching slot 2012 and the second latching protrusion 2022 and the adaptation mode of the first latching protrusion 2011 and the second latching slot 2021 can be set selectively; when both are taken into consideration at the same time, the adjacent pole-connecting terminals 20 can be more firmly and stably connected.

[0042] As mentioned above, the pole-binding terminal 20 is clamped at the bottom of the circuit breaker 10, and a first limiting surface 205 is provided on the pole-binding terminal 20. A first contact surface 102 is provided at the bottom of the circuit breaker 10, so that after the circuit breaker 10 and the pole-binding terminal 20 are clamped, the first contact surface 102 contacts and limits the first limiting surface 205 in the second direction F2.

[0043] When the upper circuit breaker 10 and the lower pole terminal 20 are engaged, the first contact surface 102 at the bottom of the circuit breaker 10 and the first limiting surface 205 on the pole terminal 20 contact to achieve limiting in the second direction F2 (height direction) so that the circuit breaker 10 can no longer move downward. At this time, the circuit breaker 10 and the pole terminal 20 are locked in place.

[0044] A contact position 203 protruding toward the circuit breaker 10 is provided on the first limiting surface 205, and the contact position 203 is adaptably connected to the wiring portion of the circuit breaker 10, and the wiring portion is located on the opposite side of the handle of the circuit breaker 10; wherein, the contact position 203 and the wiring portion can be plug-connected or abutted to facilitate the disassembly and assembly of the circuit breaker 10 and the pole terminal 20.

[0045] The first clamping portion 201 and the second clamping portion 202 are arranged in parallel, and the contact position 203 is perpendicular to the connecting direction of the first clamping portion 201 and the second clamping portion 202 .

[0046] The contact position 203 of the pole-bonding terminal 20 is connected to the first limiting surface 205, and the contact position 203 protrudes toward the circuit breaker 10 above. For example, in the present application, the contact position 203 includes two relatively parallel protrusion blocks 2030, and a gap is formed between the two protrusion blocks 2030. After the contact position 203 is protruded, it is convenient to connect with the wiring part of the circuit breaker 10 to achieve conduction between the circuit breaker 10 and the pole-bonding terminal 20.

[0047] The contact position 203 is located between the first clamping portion 201 and the second clamping portion 202 of the pole-connecting terminal 20 , and is perpendicular to the connecting direction of the first clamping portion 201 and the second clamping portion 202 .

[0048] A second limiting surface 203a is provided on the contact position 203, a groove 103 is provided at the bottom of the circuit breaker 10, the wiring part is located in the groove 103, and the groove wall of the groove 103 forms a second contact surface 104. When the pole-connecting terminal 20 and the circuit breaker 10 are engaged, the contact position 203 extends into the groove 103 to contact and limit through the second limiting surface 203a and the second contact surface 104 in the first direction F1.

[0049] When the circuit breaker 10 and the pole-binding terminal 20 are engaged, the contact position 203 of the pole-binding terminal 20 extends into the groove 103 of the circuit breaker 10. At this time, the second limiting surface 203a formed on the contact position 203 contacts the second contact surface 104 in the groove wall of the groove 103, so that the circuit breaker 10 and the pole-binding terminal 20 are limited in the first direction F1, and the two can no longer move relative to each other. At this time, the circuit breaker 10 and the pole-binding terminal 20 are engaged in place.

[0050] For example, the second limiting surface 203a is an inclined surface at the top of the contact position 203, and the second limiting surface 203a also has a guiding function to guide the contact position 203 into the groove 103 of the circuit breaker 10. After the second contact surface 104 of the circuit breaker 10 and the second limiting surface 203a of the pole-binding terminal 20 contact, the circuit breaker 10 and the pole-binding terminal 20 are clamped in the first direction F1.

[0051] On this basis, the pole coupling device also includes a guide rail 30, a plurality of pole coupling terminals 20 are arranged side by side on the guide rail 30, the circuit breaker 10 is clamped on the guide rail 30 through the pole coupling terminals 20, the circuit breaker 10 and the pole coupling terminals 20 are clamped, and the pole coupling terminals 20 and the guide rail 30 are clamped.

[0052] Alternatively, the circuit breaker 10 and the pole-connecting terminal 20 are respectively connected to the guide rail 30 , and the circuit breaker 10 can be directly connected to the guide rail 30 .

[0053] The pole coupling device is slidably connected to an external device via a guide rail 30 , and the pole coupling terminal 20 is located between the circuit breaker 10 and the guide rail 30 .

[0054] When the pole-connecting terminal 20 and the guide rail 30 are clamped, the pole-connecting terminal 20 includes a clamping portion 204 to clamp with the guide rail 30; the clamping portion 204 includes claws 204a arranged on both sides of the pole-connecting terminal 20 along the third direction F3, and the two sides of the guide rail 30 respectively have abutment portions 30a adapted to the claws 204a, and the pole-connecting terminal 20 is clamped with the abutment portions 30a through the clamping of the claws 204a and the abutment portions 30a, so that the pole-connecting terminal 20 and the guide rail 30 are clamped, and the third direction F3 is perpendicular to the first direction F1 and the second direction F2 respectively.

[0055] The pole-connecting terminal 20 is engaged with the guide rail 30 through the clamping portion 204. In the present application, the clamping portion 204 includes claws 204a arranged on both sides of the pole-connecting terminal 20; and the cross-section of the guide rail 30 is Figure 6 The U-shaped abutment portion 30a shown includes an extension arm 301 extending from the opening of the U-shaped along the third direction F3. The claws 204a on both sides of the pole connection terminal 20 are respectively inserted into the bottom of the extension arm 301 to clamp, thereby achieving the clamping of the pole connection terminal 20 and the guide rail 30 in the third direction F3.

[0056] When the circuit breaker 10 and the guide rail 30 are engaged, the circuit breaker 10 includes a buckle 10a to engage with the guide rail 30; the buckle 10a is located on the opposite side of the handle of the circuit breaker 10 and is slidably arranged with the circuit breaker 10, and the guide rail 30 is provided with an abutment portion 30a along the third direction F3, and the buckle 10a is pushed to abut against the abutment portion 30a to engage the circuit breaker 10 and the guide rail 30.

[0057] like Figure 7 As shown, a slot 101 is provided at the bottom of the circuit breaker 10, and a buckle 10a is slidably provided in the slot 101. When the buckle 10a is pushed, the buckle 10a can abut against the abutting portion 30a of the guide rail 30, so that the circuit breaker 10 and the guide rail 30 are engaged in the third direction F3.

[0058] When assembling the pole-coupling device of the present application, a plurality of pole-coupling terminals 20 are firstly clamped together through their respective first clamping portions 201 and second clamping portions 202 to form an arrangement of pole-coupling terminals 20 of the required number of poles; the pole-coupling terminals 20 are mounted on the guide rail 30 by clamping the clamping portions 204 of the pole-coupling terminals 20 with the abutting portions 30a of the guide rail 30; the wiring portion of the circuit breaker 10 is connected to the contact position 203 of the pole-coupling terminal 20 to achieve the clamping of the circuit breaker 10 and the pole-coupling terminal 20; finally, the buckle 10a is pushed to abut against the abutting portion 30a of the guide rail 30 to complete the fixation of the circuit breaker 10 and the guide rail 30.

[0059] After installation, multiple pole-binding terminals 20 are located between the guide rail 30 and the multi-pole circuit breaker 10, and only the first clamping portion 201 or the second clamping portion 202 of the outermost pole-binding terminal 20 is exposed as an interface to be connected to the pole-binding terminal 20 of the next pole, making the appearance of the overall pole-binding device beautiful.

[0060] When removing, first push the buckle 10a in the reverse direction to release the fixation between the circuit breaker 10 and the guide rail 30, and then push the circuit breaker 10 upward to separate the wiring part and the contact position 203, so as to complete the removal of the circuit breaker 10 and the pole terminal 20.

[0061] After replacing the new circuit breaker 10, connect and engage the connection part of the new circuit breaker 10 with the contact position 203 of the pole-binding terminal 20 to make the new circuit breaker 10 and the pole-binding terminal 20 snap into place, and then push back the buckle 10a to fix the new circuit breaker 10 and the guide rail 30, thus completing the disassembly and assembly of the circuit breaker 10.

[0062] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pole connection device, characterized in that: The invention comprises a plurality of circuit breakers (10) arranged in sequence along a first direction (F1), each of the circuit breakers (10) being further connected to a pole-binding terminal (20), the pole-binding terminal (20) being located on the opposite side of a handle of the circuit breaker (10) along a second direction (F2), the plurality of pole-binding terminals (20) being arranged in sequence by snap-fitting, and the first direction (F1) and the second direction (F2) being perpendicular.

2. The pole coupling device according to claim 1, characterized in that: The pole-connecting terminal (20) is provided with a first clamping portion (201) and a second clamping portion (202) on both sides along the first direction (F1), respectively, and two adjacent pole-connecting terminals (20) are clamped together by their respective first clamping portion (201) and second clamping portion (202).

3. The pole coupling device according to claim 2, characterized in that: The first clamping portion (201) comprises a first clamping slot (2012) and / or a first clamping protrusion (2011), and the second clamping portion (202) comprises a second clamping slot (2021) and / or a second clamping protrusion (2022), the first clamping slot (2012) and the second clamping protrusion (2022) are adapted to each other, and / or the first clamping protrusion (2011) and the second clamping slot (2021) are adapted to each other.

4. The pole coupling device according to claim 2, characterized in that: The pole-binding terminal (20) is provided with a first limiting surface (205), and the circuit breaker (10) is provided with a first contact surface (102). The circuit breaker (10) and the pole-binding terminal (20) are arranged in a snap-fitting manner, and are limited in contact with the first limiting surface (205) in the second direction (F2) through the first contact surface (102).

5. The pole coupling device according to claim 4, characterized in that: A contact position (203) protruding toward the circuit breaker (10) is provided on the first limiting surface (205), and the contact position (203) is adaptively connected to the wiring portion of the circuit breaker (10); the first clamping portion (201) and the second clamping portion (202) are arranged in parallel, and the contact position (203) is perpendicular to the connection direction of the first clamping portion (201) and the second clamping portion (202).

6. The pole coupling device according to claim 5, characterized in that: A second limiting surface (203a) is provided on the contact position (203), a groove (103) is provided on the circuit breaker (10), the wiring portion is located in the groove (103), a groove wall of the groove (103) forms a second contact surface (104), and when the pole-connecting terminal (20) and the circuit breaker (10) are engaged, the contact position (203) extends into the groove (103) to contact and limit in the first direction (F1) through the second limiting surface (203a) and the second contact surface (104).

7. The pole coupling device according to any one of claims 1 to 6, characterized in that: It also comprises a guide rail (30), a plurality of the pole-binding terminals (20) are arranged side by side on the guide rail (30), the circuit breaker (10) and the pole-binding terminals (20) are clamped together, and the pole-binding terminals (20) and the guide rail (30) are clamped together; or the circuit breaker (10) and the pole-binding terminals (20) are clamped together with the guide rail (30) respectively.

8. The pole coupling device according to claim 7, characterized in that: When the pole-coupling terminal (20) and the guide rail (30) are clamped, the pole-coupling terminal (20) includes a clamping portion (204) for clamping with the guide rail (30); the clamping portion (204) includes claws (204a) arranged on both sides of the pole-coupling terminal (20) along a third direction (F3); both sides of the guide rail (30) respectively have abutment portions (30a) adapted to the claws (204a); the claws (204a) are clamped with the abutment portions (30a) so that the pole-coupling terminal (20) and the guide rail (30) are clamped, and the third direction (F3) is perpendicular to the first direction (F1) and the second direction (F2).

9. The pole coupling device according to claim 7, characterized in that: When the circuit breaker (10) and the guide rail (30) are engaged, the circuit breaker (10) comprises a buckle (10a) for engaging with the guide rail (30); the buckle (10a) is located on the opposite side of the circuit breaker (10) where the handle is arranged, and is slidably arranged with the circuit breaker (10); the guide rail (30) is provided with an abutment portion (30a) along a third direction (F3); the buckle (10a) is pushed to abut against the abutment portion (30a) so that the circuit breaker (10) and the guide rail (30) are engaged; the third direction (F3) is respectively perpendicular to the first direction (F1) and the second direction (F2).

10. The pole coupling device according to claim 8 or 9, characterized in that: The guide rail (30) has a U-shaped cross section, and the abutment portion (30a) comprises an extension arm (301) extending from the U-shaped opening along the third direction (F3).

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