Grounding body and terminal block

Abstract

The utility model provides a grounding body. The grounding body comprises a grounding body base structure and a buckle structure. The buckle structure comprises a first buckle part, a second buckle part and a third buckle part; the first buckling part and the second buckling part are arranged in a spaced mode in the first direction, the distance between the first buckling part and the second buckling part in the first direction in the normal state is smaller than the thickness of the clamping edge, the first buckling part tends to move towards the side close to the second buckling part, and / or the second buckling part tends to move towards the side close to the first buckling part; and the third buckling part has a trend of matching and tightly pressing the side surface of the clamping edge in the second direction when the buckling structure is clamped with the clamping edge of the external rail. According to the grounding body provided by the utility model, the buckle structure can clamp the external track in the first direction and the second direction, and the number of electric contacts between the grounding body and the external track is increased, so that the connection between the grounding body and the external track is more reliable, and the grounding body can bear larger current. The utility model also provides a terminal block.

Description

Technical Field

[0001] The utility model relates to the field of electrical connectors, in particular to a grounding body and a terminal block. Background Art

[0002] The terminal block, also known as a rail terminal, mainly includes a housing and a grounding body. The grounding body ensures the safety performance of the rail terminal when it is installed on the rail strip. Such terminal blocks are generally used for grounding protection in the power grid. There may be a loose connection between the grounding body and the rail in the existing terminal blocks, and their ability to withstand large currents is poor; when the power grid current is unstable, such as when there is an instantaneous large current passing through the terminal block and flowing to the grounding protection rail strip, both the terminal block and the rail strip cooperating with it are easily burned out; this will cause a bad user experience, such as affecting the stability, reliability, and safety of the user's power grid system and equipment; in severe cases, it may cause fires and major safety accidents. Summary of the Utility Model

[0003] In order to overcome the deficiencies in the prior art, the utility model provides a grounding body, the buckle structure on which can clamp an external rail in a first direction and a second direction, and can increase the electrical contacts with the external rail, making the connection between the grounding body and the external rail more reliable, and capable of withstanding a larger current. The utility model also provides a terminal block.

[0004] To achieve the above object, the utility model adopts the following technical solutions to implement:

[0005] A grounding body for mating with and contacting an external rail, comprising a grounding body base structure and a buckle structure for engaging with a clamping edge of the external rail, the buckle structure being connected to the grounding body base structure; the buckle structure includes a first buckle portion, a second buckle portion, and a third buckle portion;

[0006] The first buckle portion and the second buckle portion are spaced apart in a first direction, the distance between the first buckle portion and the second buckle portion in the first direction under normal conditions is less than the thickness of the clamping edge, and the first buckle portion has a tendency to move towards the second buckle portion side when moving away from the second buckle portion compared to the normal state, and / or the second buckle portion has a tendency to move towards the first buckle portion side when moving away from the first buckle portion compared to the normal state; the third buckle portion is disposed on one side of the second buckle portion, and the third buckle portion has a tendency to cooperate with and tightly press the side surface of the clamping edge in a second direction perpendicular to the first direction when the buckle structure engages with the clamping edge of the external rail.

[0007] The first buckle part and the second buckle part in the normal state can be understood as: when the first buckle part and the second buckle part are not subject to other external forces, that is, when the grounding body is not installed on the external track, the states of the first buckle part and the second buckle part.

[0008] With the above structure, when the grounding body is installed on the external track, the buckle structure will engage with the clamping edge on the external track. At this time, since the clamping edge is inserted between the first buckle part and the second buckle part, causing the first buckle part and the second buckle part to move away from each other compared to the normal state, the first buckle part and / or the second buckle part has a tendency to approach each other. This makes the first buckle part cooperate with and tightly press against the side of the clamping edge facing the first buckle part in the first direction, and the second buckle part cooperate with and tightly press against the side of the clamping edge facing the second buckle part in the first direction. At the same time, the third buckle part tightly presses against the side of the clamping edge in the second direction; the above structure enables the grounding body to clamp the clamping edge of the external track in the first direction and the second direction when installed on the external track, making the grounding body more reliably installed on the external track and effectively avoiding the loose connection between the grounding body and the external track; at the same time, the first buckle part, the second buckle part, and the third buckle part in each buckle structure tightly press against the external track, which can greatly increase the contact points between the grounding body and the external track to better achieve electrical contact between the two, especially when carrying a large current.

[0009] Specifically, the first direction is the longitudinal direction along the height of the grounding body, and the second direction is the transverse direction along the width of the grounding body.

[0010] Furthermore, the buckle structure includes an elastic arm. The first buckle part is arranged on the base structure of the grounding body. One end of the elastic arm is connected to the base structure of the grounding body to form an elastic arm connection end, and the other end forms an elastic arm free end. And the elastic arm can undergo elastic deformation in the first direction and the second direction; the second buckle part and the third buckle part are arranged on the elastic arm free end.

[0011] With the above structure, relying on the elasticity of the elastic arm, the second buckle part and the third buckle part arranged on the elastic arm free end can move relatively in the first direction and the second direction and have a tendency to move towards the side of restoring the original position. Thus, when the second buckle part moves away from the first buckle part in the first direction compared to the normal state, it has a tendency to move towards the side close to the first buckle part, and when the buckle structure engages with the clamping edge of the external track, the third buckle part moves in the second direction and thus has a tendency to tightly press against the side of the clamping edge in the second direction.

[0012] Further, the grounding body includes a snap - fitting portion disposed at a distance from the third snap - fitting portion in the second direction, and the snap - fitting portion is used to cooperate with a rail - fitting portion in an external rail that is opposite to the clamping edge;

[0013] When the grounding body is in mating contact with the external rail, the third snap - fitting portion is opposite to the outer side surface of the clamping edge, and the snap - fitting portion is opposite to the outer side surface of the rail - fitting portion. The distance between the third snap - fitting portion and the snap - fitting portion in the normal state is less than the distance between the outer side surface of the clamping edge and the outer side surface of the rail - fitting portion;

[0014] Or, when the grounding body is in mating contact with the external rail, the third snap - fitting portion is opposite to the outer side surface of the clamping edge, and the snap - fitting portion is opposite to the inner side surface of the rail - fitting portion. The distance between the third snap - fitting portion and the snap - fitting portion in the normal state is less than the distance between the outer side surface of the clamping edge and the outer side surface of the rail - fitting portion;

[0015] Or, when the grounding body is in mating contact with the external rail, the third snap - fitting portion is opposite to the inner side surface of the clamping edge, and the snap - fitting portion is opposite to the inner side surface of the rail - fitting portion. The distance between the third snap - fitting portion and the snap - fitting portion in the normal state is greater than the distance between the outer side surface of the clamping edge and the outer side surface of the rail - fitting portion.

[0016] Specifically, the normal state of the third snap - fitting portion can be understood as: when the third snap - fitting portion is not affected by other external forces, that is, when the grounding body is not installed on the external rail, the state of the third snap - fitting portion.

[0017] With the above - mentioned structure, when the grounding body is installed on the external rail, the distance between the third snap - fitting portion and the snap - fitting portion in the second direction changes compared with the normal state, that is, the third snap - fitting portion moves in the second direction compared with the normal state. Therefore, under the action of the elastic arm, the third snap - fitting portion has a tendency to move towards the side of restoring the original position, so as to cooperate with the snap - fitting portion, realizing that the third snap - fitting portion tightly presses the side surface of the clamping edge in the second direction; of course, the snap - fitting portion can be arranged on the base structure of the grounding body or on the housing for installing the grounding body; preferably, when the grounding body is in mating contact with the external rail, the third snap - fitting portion is opposite to the outer side surface of the clamping edge, and the snap - fitting portion is opposite to the outer side surface of the rail - fitting portion, and the snap - fitting portion is arranged on the base structure of the grounding body to increase the number of electrical contact points with the external rail.

[0018] Further, the elastic arm has an arc - shaped structure.

[0019] With the above structure, the structural design of the elastic arm is more reasonable, making its elastic deformation ability and corresponding elastic force better, and the lever arm is not easily yielded; and it is beneficial to enhance the strong current-carrying ability of the grounding body.

[0020] Further, the connecting end of the elastic arm is connected to the side of the grounding body base structure away from the first snap portion, and the free end of the elastic arm is located below the first snap portion in the first direction.

[0021] With the above structure, the arrangement of the elastic arm is more reasonable. The connecting end of the elastic arm is connected to the side of the grounding body base structure away from the first snap portion, so that the elastic arm has more bending and extending space in the first direction, facilitating the arrangement of the elastic arm to achieve better elastic deformation ability and corresponding elastic force of the elastic arm, and being beneficial to making the lever arm of the elastic arm not easily yield.

[0022] Further, the elastic arm includes a first elastic arm and a second elastic arm. One end of the first elastic arm forms the connecting end of the elastic arm, and the other end is connected to one end of the second elastic arm. The other end of the second elastic arm forms the free end of the elastic arm; the first elastic arm gradually extends away from the grounding body base structure side along the second direction and bends toward the first snap portion side in the first direction, and the second elastic arm gradually extends toward the grounding body base structure side along the second direction and bends away from the connecting end of the elastic arm side in the first direction.

[0023] With the above structure, the structural arrangement of the elastic arm is more reasonable, making it have better elastic deformation ability and corresponding better elastic force; and the lever arm is not easily yielded, and it can be more reliably connected to the external guide rail.

[0024] Further, the average bending curvature of the first elastic arm is less than the average bending curvature of the second elastic arm.

[0025] With the above structure, the elastic arm is more likely to be in a large arc shape structure. While being able to better achieve the strong current-carrying ability, its elastic deformation ability and corresponding elastic force are better, and the lever arm is not easily yielded; it can be more reliably connected to the current-carrying body and the guide rail strip.

[0026] Further, clamping edges are provided on both opposite sides of the external track, namely a first clamping edge and a second clamping edge; correspondingly, two of the snap structures are provided on the grounding body in the second direction, namely a first snap structure for engaging with the first clamping edge and a second snap structure for engaging with the second clamping edge.

[0027] With the above structure, the structure of the grounding body is more reasonable. The cooperation between the first buckle structure and the first clamping edge can have three electrical contacts, and the cooperation between the second buckle structure and the second clamping edge can have three electrical contacts. When a grounding body is installed on the external track, there are six contact points, which can make the grounding body better clamp the external guide rail, enhance the connection strength between the two, avoid the virtual connection between the two, ensure the reliability of the electrical connection between the two, and is beneficial to achieving a strong current-carrying capacity. Specifically, the third buckle in the first buckle structure is formed as a buckle mating part that is oppositely arranged in the second direction with the third buckle part in the second buckle structure. Correspondingly, the third buckle in the second buckle structure is formed as a buckle mating part that is oppositely arranged in the second direction with the third buckle part in the first buckle structure. The first clamping edge is formed as a track mating part opposite to the second clamping edge. Correspondingly, the second clamping edge is formed as a track mating part opposite to the first clamping edge.

[0028] Further, at least one of the first buckle part, the second buckle part, and the third buckle part in the first buckle structure is formed as a sharp contact point with a sharp angle; and / or at least one of the first buckle part, the second buckle part, and the third buckle part in the second buckle structure is formed as a sharp contact point with a sharp angle.

[0029] With the above structure, when the grounding body is installed on the external track, the sharp angle of the sharp contact point can contact the surface of the external guide rail, and it is easier to pierce the oxide layer or contaminants with a higher surface resistance on the surface of the external guide rail, so as to achieve closer contact between the two, that is, the contact resistance between the two is lower and the electrical conductivity is better. Even if there is an oxide layer or slight contaminants on the surface of the connected external guide rail, the electrical connection is still reliable. Specifically, the first buckle part in the first buckle structure is formed as a sharp contact point with a sharp angle.

[0030] Further, in the first buckle structure, its second buckle part is located below its first buckle part in the first direction, and the side of its second buckle part far from its third buckle part in the second direction gradually inclines away from the second buckle structure side along the direction from its first buckle part to its second buckle part;

[0031] In the second buckle structure, its second buckle part is located below its first buckle part in the first direction, and the side of its second buckle part far from its third buckle part in the second direction gradually inclines towards the second buckle structure side along the direction from its first buckle part to its second buckle part.

[0032] By adopting the above structure, when installing the grounding body to the external rail, the second snapping edge of the external rail can be first aligned between the first snapping part and the second snapping part in the second snapping structure; the grounding body and the external rail are relatively moved in the second direction, and due to the inclined setting of the second snapping part in the second snapping structure, the second snapping edge can more easily and conveniently enter between the first snapping part and the second snapping part in the second snapping structure; then the first snapping structure side of the grounding body is pressed down along the first direction, and due to the inclined setting of the second snapping part in the first snapping structure, the first snapping edge acts on the second snapping part, so that the elastic arm in the first snapping structure is deformed so that the first snapping edge can be snapped into the first snapping structure; the above structure can more conveniently install the grounding body on the external rail, which is easy to operate.

[0033] Further, when the grounding body is in a state of being in contact with the external rail, the side of the grounding body base structure facing the external rail is formed as a first side, and the side away from the external rail is formed as a second side, the middle part of the first side is bent and convex along the direction from the second side to the first side, and the two sides are bent and concave along the direction from the first side to the second side, and the middle part of the second side is bent and concave along the direction from the second side to the first side, and the two sides are bent and convex along the direction from the first side to the second side.

[0034] By adopting the above structure, the first side and the second side of the base structure of the grounding body present a multi-curve profile, which can enable it to better connect with the elastic arm in the snap structure and can well realize the large cross-section of the grounding body, which is more conducive to realizing the strong current-carrying capacity of the grounding body.

[0035] Furthermore, the grounding body base structure is formed into a first assembly side and a second assembly side on both sides in its thickness direction, the first assembly side is provided with a first connecting structure, and the second assembly side is provided with a second connecting structure at a corresponding position that can be connected and cooperated with the first connecting structure.

[0036] With the above structure, the setting of the first connecting structure and the second connecting structure facilitates stacking of multiple grounding bodies along their thickness direction; the adjacent grounding bodies are connected through the cooperation of the first connecting structure and the second connecting structure, so that the multiple grounding bodies are better positioned and fixedly connected.

[0037] Further, one of the first connection structure and the second connection structure is configured as a connection protrusion protruding outward, and the other of the first connection structure and the second connection structure is configured as a connection groove matching the connection protrusion.

[0038] With the above structure, when multiple said grounding bodies are stacked, the connecting protrusions on one of two adjacent said grounding bodies can be snapped into the connecting grooves on the other, realizing the positioning and fixed connection between the two.

[0039] Further, a second current-carrying connection part that mates with the first current-carrying connection part on the current-carrying body is provided on the grounding body base structure.

[0040] With the above structure, it is convenient for the connection between the grounding body and the current-carrying body.

[0041] Further, one of the first current-carrying connection part and the second current-carrying connection part is configured as a connection block, and the other of the first current-carrying connection part and the second current-carrying connection part is configured as a connection hole that matches the connection block; the height of the connection block is greater than the depth of the connection hole.

[0042] With the above structure, the setting of the connection block and the connection hole facilitates the tight and reliable connection between the grounding body and the current-carrying body through riveting, that is, the contact resistance between the two is lower and the electrical conductivity is better; specifically, the first current-carrying connection part is configured as a connection hole, and the second current-carrying connection part is configured as a connection block.

[0043] Further, one or more first current-carrying connection parts are provided, and correspondingly, the number of the second current-carrying connection parts provided is matched with the number of the first current-carrying connection parts.

[0044] With the above structure, when multiple first current-carrying connection parts and second current-carrying connection parts are provided, the connection contacts between the grounding body and the current-carrying body can be increased, and the stable and reliable connection between the two can be increased, and the electrical conductivity between the two is better.

[0045] Further, positioning and fixing feet are provided on the grounding body, and the positioning and fixing feet are arranged on one side of the grounding body in the second direction and extend outward along the second direction.

[0046] With the above structure, the setting of the fixing feet facilitates the positioning and installation of the grounding body on the housing.

[0047] A terminal block, which is used for installation on an external track, includes a current-carrying body and the above-mentioned grounding body, and the current-carrying body is connected to the grounding body.

[0048] With the above structure, the grounding body in the terminal block can clamp the external rail in the first direction and the second direction, and has elastic clamping force with multiple contact points to clamp the external rail, avoiding the virtual connection between the two, ensuring the reliability of the connection between the grounding body and the external rail, so as to better achieve the electrical contact between the two, especially in the case of bearing large current.

[0049] Further, one or more grounding bodies are provided. When multiple grounding bodies are provided, the multiple grounding bodies are stacked along their thickness.

[0050] With the above structure, when multiple grounding bodies are provided, the number of electrical contact points between the terminal block and the external rail can be greatly increased, enhancing the reliable electrical connection between the two, and at the same time increasing the overall mechanical connection strength.

[0051] Further, the terminal block includes a housing, and the current-carrying body and the grounding body are arranged on the housing.

[0052] With the above structure, the structure of the terminal block is more reasonable. The setting of the housing provides an installation basis for the setting of the current-carrying body and the grounding body, and the housing is an insulating housing to ensure the safety of use.

[0053] Further, when the housing cooperates with the external rail, an elastic clip for clamping one side of the external rail and a clip mating part for clamping the other side of the external rail are provided on the side facing the external rail. The elastic clip and the clip mating part are arranged at a distance in the second direction, and the elastic clip has a tendency to cooperate and press the external rail tightly when the terminal block is installed on the external rail.

[0054] With the above structure, the setting of the elastic clip and the clip mating part can achieve mechanical locking after the grounding body is connected to the external rail, and can prevent the grounding body from slipping off the external guide rail.

[0055] Further, the elastic clip and the clip mating part are respectively clamped with the outer sides of both sides of the external rail. The distance between the elastic clip and the clip mating part in the normal state is less than the distance between the outer sides of both sides of the external rail; the elastic clip has a tendency to move towards the side close to the clip mating part when it is farther away from the clip mating part than in the normal state.

[0056] With the above structure, the structural setting of the elastic clip and the clip mating part is more reasonable, ensuring the reliability of the connection.

[0057] Further, a first clamping groove for clamping with a first clamping edge on one side of an external track is provided on the elastic clamping foot; a second clamping groove for clamping with a second clamping edge on the other side of the external track is provided on the clamping foot fitting part.

[0058] With the above structure, the structures of the elastic clamping foot and the clamping foot fitting part are more reasonably arranged, ensuring the reliability of the connection.

[0059] Further, a carrier fluid mounting groove matching the carrier fluid is provided on the housing at the place for mounting the carrier fluid, and a grounding body mounting groove matching the grounding body is provided at the place for mounting the grounding body. An insertion port communicating with the carrier fluid mounting groove for an external conductor to be inserted and cooperate with the carrier fluid is also provided on the housing.

[0060] With the above structure, the structure of the housing is more reasonably arranged.

[0061] Further, the carrier fluid includes a carrier fluid body and an elastic limiting member provided on the carrier fluid body for cooperating with the carrier fluid body to clamp an external conductor, and the grounding body is connected to the carrier fluid body.

[0062] With the above structure, the structure of the carrier fluid is more reasonably arranged.

[0063] Compared with the prior art, the present utility model has the following beneficial effects:

[0064] (1) For the grounding body and the terminal block of the present utility model, the buckle structure thereon can clamp the external track in the first direction and the second direction, and can increase the electrical contact points with the external track, making the connection between the grounding body and the external track more reliable and capable of withstanding a larger current.

[0065] (2) For the grounding body and the terminal block of the present utility model, they have a shape structure with a large cross-section, multiple curved profiles, and large arc connections, so that they have a strong current-carrying capacity.

[0066] (3) For the grounding body and the terminal block of the present utility model, their structural design is reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0068] Figure 1 It is a three-dimensional structural schematic diagram of the grounding body of the present utility model;

[0069] Figure 2 This is a three-dimensional structural schematic diagram of the grounding body of the present utility model from another angle;

[0070] Figure 3 It is Figure 1 an enlarged view of part A in

[0071] Figure 4 It is Figure 1 an enlarged view of part B in

[0072] Figure 5 This is a schematic diagram of the cooperation between the grounding body of the present utility model and an external track;

[0073] Figure 6 This is a schematic diagram of the cooperation between the grounding body of the present utility model and a current-carrying body;

[0074] Figure 7 This is a three-dimensional structural schematic diagram of the terminal block of the present utility model;

[0075] The corresponding component names for the respective reference numerals in the figure are: 1. Grounding body base structure; 101. First side; 102. Second side; 103. First assembly side; 104. Second assembly side; 105. First connection structure; 106. Second connection structure; 107. Connection protrusion; 108. Connection groove; 2. Snap structure; 201. First snap portion; 202. Second snap portion; 203. Third snap portion; 204. Elastic arm; 2041. Elastic arm connection end; 2042. Elastic arm free end; 2043. First elastic arm; 2044. Second elastic arm; 205. First snap structure; 206. Second snap structure; 3. Snap cooperation portion; 4. Point contact; 401. Sharp corner; 5. Second current-carrying connection portion; 6. Connection block; 7. Connection hole; 8. Positioning and fixing foot;

[0076] 10. External track; 10-1. Clamping edge; 10-11. First clamping edge; 10-12. Second clamping edge; 10-2. Track cooperation portion; 20. Current-carrying body; 20-1. First current-carrying connection portion; 20-2. Current-carrying body main body; 20-3. Elastic limiting member; 30. Grounding body; 40. Housing; 40-1. Elastic clamping foot; 40-11. First clamping groove; 40-2. Clamping foot cooperation portion; 40-21. Second clamping groove; 40-3. Current-carrying body installation groove; 40-4. Grounding body installation groove; 40-5. Insertion interface. Detailed implementation manner

[0077] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0078] The following describes the implementation manners of the present application through specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope protected by the present application.

[0079] It should be noted that the following describes various aspects of the embodiments within the scope of the appended claims. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on the present application, those skilled in the art should understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects described herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using other structures and / or functions in addition to one or more of the aspects described herein.

[0080] It should also be noted that the diagrams provided in the following embodiments only illustrate the basic concept of the present application in a schematic manner. The diagrams only show the components related to the present application rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0081] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the examples can be practiced without these specific details.

[0082] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0083] The following describes the technical solutions provided by each embodiment of the present application in conjunction with the accompanying drawings.

[0084] Refer to Figures 1 to 6 , the present utility model provides a grounding body 30, which is used to cooperate with and contact an external track 10, and includes a grounding body base structure 1 and a buckle structure 2 for engaging with a clamping edge 10-1 of the external track 10. The buckle structure 2 is connected to the grounding body base structure 1; the buckle structure 2 includes a first buckle portion 201, a second buckle portion 202 and a third buckle portion 203;

[0085] The first buckle portion 201 and the second buckle portion 202 are arranged at a distance in a first direction. The distance between the first buckle portion 201 and the second buckle portion 202 in the first direction under normal conditions is less than the thickness of the clamping edge 10-1, and the first buckle portion 201 has a tendency to move towards the second buckle portion 202 side when moving away from the second buckle portion 202 compared with the normal state, and / or the second buckle portion 202 has a tendency to move towards the first buckle portion 201 side when moving away from the first buckle portion 201 compared with the normal state; the third buckle portion 203 is arranged on one side of the second buckle portion 202, and the third buckle portion 203 has a tendency to cooperate with and tightly press the side surface of the clamping edge 10-1 in a second direction perpendicular to the first direction when the buckle structure 2 is engaged with the clamping edge 10-1 of the external track 10.

[0086] The normal state of the first buckle portion 201 and the second buckle portion 202 can be understood as: the state of the first buckle portion 201 and the second buckle portion 202 when the first buckle portion 201 and the second buckle portion 202 are not subject to other external forces, that is, when the grounding body 30 is not installed on the external track 10.

[0087] With the above structure, when the grounding body 30 is installed on the external track 10, the buckle structure 2 will engage with the clamping edge 10-1 on the external track 10. At this time, since the clamping edge 10-1 is inserted between the first buckle portion 201 and the second buckle portion 202, the first buckle portion 201 and the second buckle portion 202 are farther apart from each other than in the normal state. The first buckle portion 201 and / or the second buckle portion 202 has a tendency to approach each other, so that the first buckle portion 201 cooperates with and tightly presses the side of the clamping edge 10-1 facing the first buckle portion 201 in the first direction, and the second buckle portion 202 cooperates with and tightly presses the side of the clamping edge 10-1 facing the second buckle portion 202 in the first direction. At the same time, the third buckle portion 203 cooperates with and tightly presses the side of the clamping edge 10-1 in the second direction. The above structure enables the grounding body 30 to clamp the clamping edge 10-1 of the external track 10 in the first direction and the second direction when the grounding body 30 is installed on the external track 10, so that the grounding body 30 can be installed on the external track 10 more reliably, and effectively avoid the loose connection between the grounding body 30 and the external track 10. At the same time, the first buckle portion 201, the second buckle portion 202, and the third buckle portion 203 in each buckle structure 2 are all in tight contact with the external track 10, which can greatly increase the contact points between the grounding body 30 and the external track 10, so as to better achieve the electrical contact between the two, especially in the case of withstanding large currents.

[0088] Specifically, the first direction is the longitudinal direction along the height of the grounding body 30, and the second direction is the transverse direction along the width of the grounding body 30.

[0089] Furthermore, the buckle structure 2 includes an elastic arm 204. The first buckle portion 201 is arranged on the grounding body base structure 1. One end of the elastic arm 204 is connected to the grounding body base structure 1 to form an elastic arm connection end 2041, and the other end is formed as an elastic arm free end 2042. The elastic arm 204 can undergo elastic deformation in the first direction and the second direction. The second buckle portion 202 and the third buckle portion 203 are arranged on the elastic arm free end 2042.

[0090] With the above structure, relying on the elasticity of the elastic arm 204, the second buckle portion 202 and the third buckle portion 203 provided at the free end 2042 of the elastic arm can move relative to each other in the first direction and the second direction, and have a tendency to move toward the side of restoring to the original position. As a result, when the second buckle portion 202 is farther away from the first buckle portion 201 in the first direction compared to the normal state, it has a tendency to move toward the side closer to the first buckle portion 201. When the third buckle portion 203 is engaged with the engaging edge 10-1 of the external track 10 of the buckle structure 2, it moves in the second direction and thus has a tendency to cooperate with and tightly press the side surface of the engaging edge 10-1.

[0091] Further, the grounding body 30 includes a buckle engaging portion 3 disposed at a distance from the third buckle portion 203 in the second direction. The buckle engaging portion 3 is used to cooperate with a track engaging portion 10-2 of the external track 10 that is opposite to the engaging edge 10-1.

[0092] When the grounding body 30 is in contact and cooperation with the external track 10, the third buckle portion 203 is opposite to the outer side surface of the engaging edge 10-1, and the buckle engaging portion 3 is opposite to the outer side surface of the track engaging portion 10-2. The distance between the third buckle portion 203 and the buckle engaging portion 3 in the normal state is less than the distance between the outer side surface of the engaging edge 10-1 and the outer side surface of the track engaging portion 10-2.

[0093] Or, when the grounding body 30 is in contact and cooperation with the external track 10, the third buckle portion 203 is opposite to the outer side surface of the engaging edge 10-1, and the buckle engaging portion 3 is opposite to the inner side surface of the track engaging portion 10-2. The distance between the third buckle portion 203 and the buckle engaging portion 3 in the normal state is less than the distance between the outer side surface of the engaging edge 10-1 and the outer side surface of the track engaging portion 10-2.

[0094] Or, when the grounding body 30 is in contact and cooperation with the external track 10, the third buckle portion 203 is opposite to the inner side surface of the engaging edge 10-1, and the buckle engaging portion 3 is opposite to the inner side surface of the track engaging portion 10-2. The distance between the third buckle portion 203 and the buckle engaging portion 3 in the normal state is greater than the distance between the outer side surface of the engaging edge 10-1 and the outer side surface of the track engaging portion 10-2.

[0095] Specifically, the normal state of the third buckle portion 203 can be understood as: the state of the third buckle portion 203 when it is not subjected to other external forces, that is, when the grounding body 30 is not installed on the external track 10.

[0096] With the above structure, when the grounding body 30 is installed on the external track 10, the distance between the third buckle portion 203 and the buckle engaging portion 3 in the second direction changes compared with the normal state, that is, the third buckle portion 203 moves in the second direction compared with the normal state. Therefore, under the action of the elastic arm 204, the third buckle portion 203 has a tendency to move toward the side of restoring the original position, so as to cooperate with the buckle engaging portion 3, and the third buckle portion 203 is tightly pressed against the side surface of the clamping edge 10-1 in the second direction; of course, the buckle engaging portion 3 can be arranged on the grounding body base structure 1 or on the housing 40 for installing the grounding body 30; preferably, the third buckle portion 203 faces the outer side surface of the clamping edge 10-1 when the grounding body 30 is in contact with the external track 10, and the buckle engaging portion 3 faces the outer side surface of the track engaging portion 10-2 when the grounding body 30 is in contact with the external track 10, and the buckle engaging portion 3 is arranged on the grounding body base structure 1 to increase the number of electrical contact points with the external track 10.

[0097] Furthermore, the elastic arm 204 has an arc-shaped structure.

[0098] With the above structure, the structural design of the elastic arm 204 is more reasonable, its elastic deformation ability and the corresponding elastic force are better, and the force arm is not easily yielded; and it is beneficial to enhance the strong current-carrying capacity of the grounding body 30.

[0099] Furthermore, the elastic arm connection end 2041 is connected to the side of the grounding body base structure 1 away from the first buckle portion 201, and the free end 2042 of the elastic arm is located below the first buckle portion 201 in the first direction.

[0100] With the above structure, the arrangement of the elastic arm 204 is more reasonable. The elastic arm connection end 2041 is connected to the side of the grounding body base structure 1 away from the first buckle portion 201, so that the elastic arm 204 has more bending and extending space in the first direction, which is convenient for the arrangement of the elastic arm 204 to achieve better elastic deformation ability and the corresponding elastic force of the elastic arm 204, and is beneficial to making the force arm of the elastic arm 204 not easily yield.

[0101] Further, the elastic arm 204 includes a first elastic arm 2043 and a second elastic arm 2044. One end of the first elastic arm 2043 forms the elastic arm connection end 2041, and the other end is connected to one end of the second elastic arm 2044. The other end of the second elastic arm 2044 forms the elastic arm free end 2042. The first elastic arm 2043 gradually extends away from the grounding body base structure 1 side along the second direction and bends towards the first latching portion 201 side in the first direction. The second elastic arm 2044 gradually extends towards the grounding body base structure 1 side along the second direction and bends away from the elastic arm connection end 2041 side in the first direction.

[0102] With the above structure, the structure of the elastic arm 204 is more reasonable, making it have better elastic deformation ability and corresponding better elastic force; and the lever arm is not easily yielded, and it can be more reliably connected to the external guide rail.

[0103] Further, the average bending curvature of the first elastic arm 2043 is less than that of the second elastic arm 2044.

[0104] With the above structure, the elastic arm 204 is more likely to form a large arc-shaped structure, which can better achieve strong current-carrying capacity. At the same time, its elastic deformation ability and corresponding elastic force are better, and the lever arm is not easily yielded; it can be more reliably connected to the current-carrying body 20 and the guide rail strip.

[0105] Further, clamping edges 10-1 are provided on both opposite sides of the external track 10, namely a first clamping edge 10-11 and a second clamping edge 10-12 respectively. Correspondingly, two of the latching structures 2 are provided on the grounding body 30 in the second direction, namely a first latching structure 205 for engaging with the first clamping edge 10-11 and a second latching structure 206 for engaging with the second clamping edge 10-12.

[0106] With the above structure, the structure of the grounding body 30 is more reasonable. The cooperation between the first snap structure 205 and the first snap edge 10-11 can have three electrical contacts, and the cooperation between the second snap structure 206 and the second snap edge 10-12 can have three electrical contacts. When a grounding body 30 is installed on the external track 10, there are six contact points, which can make the grounding body 30 better clamp the external guide rail, enhance the connection strength between the two, avoid the virtual connection between the two, ensure the reliability of the electrical connection between the two, and is beneficial to achieve a strong current-carrying capacity. Specifically, the third snap in the first snap structure is formed as a snap mating portion 3 that is oppositely arranged in the second direction with the third snap portion 203 in the second snap structure 206. Correspondingly, the third snap in the second snap structure is formed as a snap mating portion 3 that is oppositely arranged in the second direction with the third snap portion 203 in the first snap structure 205. The first snap edge 10-11 is formed as a track mating portion 10-2 opposite to the second snap edge 10-12. Correspondingly, the second snap edge 10-12 is formed as a track mating portion 10-2 opposite to the first snap edge 10-11.

[0107] Further, at least one of the first snap portion 201, the second snap portion 202, and the third snap portion 203 in the first snap structure 205 is formed as a pointed contact 4 having a sharp corner 401; and / or at least one of the first snap portion 201, the second snap portion 202, and the third snap portion 203 in the second snap structure 206 is formed as a pointed contact 4 having a sharp corner 401.

[0108] With the above structure, when the grounding body 30 is installed on the external track 10, the sharp corner 401 of the pointed contact 4 can contact the surface of the external guide rail, and it is easier to pierce the oxide layer or contaminants with a higher surface resistance on the surface of the external guide rail, so as to achieve closer contact between the two, that is, the contact resistance between the two is lower and the electrical conductivity is better. Even if there is an oxide layer or slight contaminants on the surface of the connected external guide rail, the electrical connection is still reliable. Specifically, the first snap portion 201 in the first snap structure 205 is formed as a pointed contact 4 having a sharp corner 401.

[0109] Further, in the first snap structure 205, its second snap portion 202 is located below its first snap portion 201 in the first direction, and the side of its second snap portion 202 away from its third snap portion 203 in the second direction gradually inclines away from the second snap structure 206 along the direction from its first snap portion 201 to its second snap portion 202;

[0110] In the second buckle structure 206, the second buckle portion 202 is located below the first buckle portion 201 in the first direction, and the side of the second buckle portion 202 away from the third buckle portion 203 in the second direction gradually inclines toward the side of the second buckle structure 206 along the direction from the first buckle portion 201 to the second buckle portion 202.

[0111] With the above structure, when installing the grounding body 30 onto the external track 10, the second clamping edge 10-12 of the external track 10 can be first aligned between the first buckle portion 201 and the second buckle portion 202 in the second buckle structure 206; when the grounding body 30 and the external track 10 move relatively in the second direction, due to the inclined setting of the second buckle portion 202 in the second buckle structure 206, the second clamping edge 10-12 can more easily and conveniently enter between the first buckle portion 201 and the second buckle portion 202 in the second buckle structure 206; then press the side of the first buckle structure 205 of the grounding body 30 downward in the first direction. Due to the inclined setting of the second buckle portion 202 in the first buckle structure 205, the first clamping edge 10-11 acts on the second buckle portion 202, causing the elastic arm 204 in the first buckle structure 205 to deform so that the first clamping edge 10-11 can be engaged into the first buckle structure 205; the above structure can more conveniently install the grounding body 30 onto the external track 10, facilitating the operation.

[0112] Further, in the state where the grounding body 30 is in contact and cooperation with the external track 10, the side of the grounding body base structure 1 facing the external track 10 is formed as the first side 101, and the side away from the external track 10 is formed as the second side 102. The middle of the first side 101 bulges in a curved shape along the direction from the second side 102 to the first side 101, and both sides are recessed in a curved shape along the direction from the first side 101 to the second side 102. The middle of the second side 102 is recessed in a curved shape along the direction from the second side 102 to the first side 101, and both sides are bulged in a curved shape along the direction from the first side 101 to the second side 102.

[0113] With the above structure, the first side 101 and the second side 102 of the grounding body base structure 1 have a multi-curve profile, which can enable it to better connect with the elastic arm 204 in the buckle structure 2 and can well realize the large cross-section of the grounding body 30, which is more conducive to realizing the strong current-carrying capacity of the grounding body 30.

[0114] Further, both sides of the grounding body base structure 1 in its thickness direction are respectively formed as a first assembly side surface 103 and a second assembly side surface 104. The first assembly side surface 103 is provided with a first connection structure 105, and the second assembly side surface 104 is provided with a second connection structure 106 that can be connected and cooperated with the first connection structure 105 at a corresponding position.

[0115] With the above structure, the first connection structure 105 and the second connection structure 106 are provided to facilitate the stacking of multiple grounding bodies 30 along their thickness direction; the adjacent grounding bodies 30 are connected through the cooperation of the first connection structure 105 and the second connection structure 106, so that better positioning and fixed connection are achieved between the multiple grounding bodies 30.

[0116] Further, one of the first connection structure 105 and the second connection structure 106 is configured as a connecting protrusion 107 that protrudes outward, and the other of the first connection structure 105 and the second connection structure 106 is configured as a connecting groove 108 that matches the connecting protrusion 107.

[0117] With the above structure, when multiple grounding bodies 30 are stacked, the connecting protrusion 107 on one of the adjacent two grounding bodies 30 can be inserted into the connecting groove 108 on the other, realizing the positioning and fixed connection between the two.

[0118] Further, the grounding body base structure 1 is provided with a second current-carrying connection portion 5 that cooperates with the first current-carrying connection portion 20-1 on the current-carrying body 20.

[0119] With the above structure, it is convenient for the connection between the grounding body 30 and the current-carrying body 20.

[0120] Further, one of the first current-carrying connection portion 20-1 and the second current-carrying connection portion 5 is configured as a connection block 6, and the other of the first current-carrying connection portion 20-1 and the second current-carrying connection portion 5 is configured as a connection hole 7 that matches the connection block 6; the height of the connection block 6 is greater than the depth of the connection hole 7.

[0121] With the above structure, the connection block 6 and the connection hole 7 are provided to facilitate the tight and reliable connection between the grounding body 30 and the current-carrying body 20 through riveting, that is, the contact resistance between the two is lower and the conductivity is better; specifically, the first current-carrying connection portion 20-1 is configured as the connection hole 7, and the second current-carrying connection portion 5 is configured as the connection block 6.

[0122] Furthermore, one or more first current-carrying connection parts 20-1 are provided. Correspondingly, the number of the second current-carrying connection parts 5 is matched with the number of the first current-carrying connection parts 20-1.

[0123] With the above structure, when a plurality of the first current-carrying connection parts 20-1 and the second current-carrying connection parts 5 are provided, the connection contacts between the grounding body 30 and the current-carrying body 20 can be increased, and the stable and reliable connection between the two can be enhanced, and better electrical conductivity can be achieved between the two.

[0124] Furthermore, positioning and fixing feet 8 are provided on the grounding body 30. The positioning and fixing feet 8 are arranged on one side of the grounding body 30 in the second direction and extend outward along the second direction.

[0125] With the above structure, the arrangement of the fixing feet facilitates the positioning and installation of the grounding body 30 on the housing 40.

[0126] Refer to Figures 1 to 7 , a terminal block, which is used for installing and setting on an external rail 10, includes a current-carrying body 20 and the above-mentioned grounding body 30, and the current-carrying body 20 is connected to the grounding body 30.

[0127] With the above structure, the grounding body 30 in the terminal block can clamp the external rail 10 in the first direction and the second direction, and elastically clamp the external rail 10 with multiple contact points, avoiding the virtual connection between the two, ensuring the reliability of the connection between the grounding body 30 and the external rail 10, so as to better achieve the electrical contact between the two, especially in the case of withstanding large currents.

[0128] Furthermore, one or more grounding bodies 30 are provided. When a plurality of grounding bodies 30 are provided, the plurality of grounding bodies 30 are stacked along their thickness direction.

[0129] With the above structure, when a plurality of grounding bodies 30 are provided, the number of electrical contact points between the terminal block and the external rail 10 can be greatly increased, the reliable electrical connection between the two can be enhanced, and the overall mechanical connection strength can also be increased.

[0130] Furthermore, the terminal block includes a housing 40, and the current-carrying body 20 and the grounding body 30 are arranged on the housing 40.

[0131] With the above structure, the structure of the terminal block is more reasonable. The arrangement of the housing 40 provides an installation basis for the arrangement of the current-carrying body 20 and the grounding body 30, and the housing 40 is an insulating housing 40 to ensure the safety of use.

[0132] Further, when the housing 40 is engaged with the external track 10, an elastic latch 40-1 for engaging with one side of the external track 10 and a latch engaging portion 40-2 for engaging with the latch on the other side of the external track 10 are provided on one side facing the external track 10. The elastic latch 40-1 and the latch engaging portion 40-2 are spaced apart in the second direction, and the elastic latch 40-1 has a tendency to tightly press against the external track 10 when the terminal block is mounted on the external track 10.

[0133] With the above structure, the elastic latch 40-1 and the latch engaging portion 40-2 can achieve mechanical locking after the grounding body 30 is connected to the external track 10, and can prevent the grounding body 30 from slipping off the external guide rail.

[0134] Further, the elastic latch 40-1 and the latch engaging portion 40-2 are respectively engaged with the outer sides of both sides of the external track 10. The distance between the elastic latch 40-1 and the latch engaging portion 40-2 in the normal state is less than the distance between the outer sides of both sides of the external track 10; the elastic latch 40-1 has a tendency to move towards the side close to the latch engaging portion 40-2 when it is farther away from the latch engaging portion 40-2 than in the normal state.

[0135] With the above structure, the structural settings of the elastic latch 40-1 and the latch engaging portion 40-2 are more reasonable, ensuring the reliability of the connection.

[0136] Further, a first engaging groove 40-11 for engaging with a first engaging edge 10-11 on one side of the external track 10 is provided on the elastic latch 40-1; a second engaging groove 40-21 for engaging with a second engaging edge 10-12 on the other side of the external track 10 is provided on the latch engaging portion 40-2.

[0137] With the above structure, the structural settings of the elastic latch 40-1 and the latch engaging portion 40-2 are more reasonable, ensuring the reliability of the connection.

[0138] Further, a carrier installation groove 40-3 matching the carrier 20 is provided on the housing 40 at the position for installing the carrier 20, and a grounding body installation groove 40-4 matching the grounding body 30 is provided at the position for installing the grounding body 30. An insertion port 40-5 communicating with the carrier installation groove 40-3 for inserting an external conductor to cooperate with the carrier 20 is further provided on the housing 40.

[0139] With the above structure, the structural setting of the housing 40 is more reasonable.

[0140] Further, the current-carrying body 20 includes a current-carrying body main body 20-2 and an elastic limiting member 20-3 disposed on the current-carrying body main body 20-2 for cooperating with the current-carrying body main body 20-2 to clamp an external conductor, and the grounding body 30 is connected to the current-carrying body main body 20-2.

[0141] For the same and similar parts among the various embodiments in this specification, reference can be made to each other. Each embodiment focuses on the differences from other embodiments.

[0142] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A grounding body (30) for contacting an external rail (10), characterized in that: The invention comprises a grounding body base structure (1), and a buckle structure (2) for engaging with a buckle edge (10-1) of an external rail (10), wherein the buckle structure (2) is connected to the grounding body base structure (1); the buckle structure (2) comprises a first buckle portion (201), a second buckle portion (202) and a third buckle portion (203); The first buckle portion (201) and the second buckle portion (202) are arranged at a distance in the first direction, the distance between the first buckle portion (201) and the second buckle portion (202) in the first direction under normal conditions is smaller than the thickness of the clamping edge (10-1), and the first buckle portion (201) has a tendency to move toward the second buckle portion (202) side compared to when it is away from the second buckle portion (202) under normal conditions, and / or the second buckle portion (202) has a tendency to move toward the first buckle portion (201) side compared to when it is away from the first buckle portion (201) under normal conditions; the third buckle portion (203) is arranged on one side of the second buckle portion (202), and when the buckle structure (2) is engaged with the clamping edge (10-1) of the external rail (10), the third buckle portion (203) has a tendency to cooperate and press the side surface of the clamping edge (10-1) in a second direction perpendicular to the first direction.

2. The grounding body (30) according to claim 1, characterized in that: The buckle structure (2) comprises an elastic arm (204), the first buckle portion (201) is arranged on the grounding body base structure (1), one end of the elastic arm (204) is connected to the grounding body base structure (1) to form an elastic arm connecting end (2041), and the other end is formed as an elastic arm free end (2042), and the elastic arm (204) can be elastically deformed in a first direction and a second direction; the second buckle portion (202) and the third buckle portion (203) are arranged on the elastic arm free end (2042).

3. The grounding body (30) according to claim 2, characterized in that: It comprises a snap-fitting portion (3) arranged at a distance from the third snap-fitting portion (203) in the second direction, and the snap-fitting portion (3) is used to cooperate with a track matching portion (10-2) in the external track (10) opposite to the snap-fitting edge (10-1); The third snap-fit ​​portion (203) is opposite to the outer side surface of the snap-fit ​​edge (10-1) when the grounding body (30) is in mating contact with the external rail (10); the snap-fitting portion (3) is opposite to the outer side surface of the rail fitting portion (10-2) when the grounding body (30) is in mating contact with the external rail (10); and the distance between the third snap-fitting portion (203) and the snap-fitting portion (3) under normal conditions is smaller than the distance between the outer side surface of the snap-fitting edge (10-1) and the outer side surface of the rail fitting portion (10-2); Alternatively, the third snap-fit ​​portion (203) is opposite to the outer side surface of the snap-fit ​​edge (10-1) when the grounding body (30) is in mating contact with the external rail (10), and the snap-fit ​​portion (3) is opposite to the inner side surface of the rail fitting portion (10-2) when the grounding body (30) is in mating contact with the external rail (10), and the distance between the third snap-fit ​​portion (203) and the snap-fit ​​portion (3) under normal conditions is smaller than the distance between the outer side surface of the snap-fit ​​edge (10-1) and the outer side surface of the rail fitting portion (10-2); Alternatively, the third snap-fit ​​portion (203) is opposite to the inner side surface of the snap-fit ​​edge (10-1) when the grounding body (30) is in mating contact with the external rail (10), and the snap-fit ​​portion (3) is opposite to the inner side surface of the rail fitting portion (10-2) when the grounding body (30) is in mating contact with the external rail (10), and the distance between the third snap-fit ​​portion (203) and the snap-fit ​​portion (3) under normal conditions is greater than the distance between the outer side surface of the snap-fit ​​edge (10-1) and the outer side surface of the rail fitting portion (10-2).

4. The grounding body (30) according to claim 2, characterized in that: The elastic arm (204) is in an arc-shaped structure; The elastic arm connection end (2041) is connected to a side of the grounding body base structure (1) that is away from the first buckle portion (201), and the elastic arm free end (2042) is located below the first buckle portion (201) in the first direction; The elastic arm (204) comprises a first elastic arm (2043) and a second elastic arm (2044); one end of the first elastic arm (2043) is formed as the elastic arm connecting end (2041), and the other end is connected to one end of the second elastic arm (2044); the other end of the second elastic arm (2044) is formed as the elastic arm free end (2042); the first elastic arm (2043) gradually extends away from the grounding body base structure (1) side along the second direction and bends toward the first buckle portion (201) side in the first direction; the second elastic arm (2044) gradually extends toward the grounding body base structure (1) side along the second direction and bends away from the elastic arm connecting end (2041) side in the first direction; The average bending curvature of the first elastic arm (2043) is smaller than the average bending curvature of the second elastic arm (2044).

5. The grounding body (30) according to any one of claims 1 to 4, characterized in that: The outer rail (10) is provided with snap-fit ​​edges (10-1) on opposite sides, which are respectively a first snap-fit ​​edge (10-11) and a second snap-fit ​​edge (10-12); correspondingly, the grounding body (30) is provided with two snap-fit ​​structures (2) in the second direction, which are respectively a first snap-fit ​​structure (205) for snapping with the first snap-fit ​​edge (10-11) and a second snap-fit ​​structure (206) for snapping with the second snap-fit ​​edge (10-12).

6. The grounding body (30) according to claim 5, characterized in that: At least one of the first buckle portion (201), the second buckle portion (202) and the third buckle portion (203) in the first buckle structure (205) is formed as a sharp contact point (4) having a sharp corner (401); and / or at least one of the first buckle portion (201), the second buckle portion (202) and the third buckle portion (203) in the second buckle structure (206) is formed as a sharp contact point (4) having a sharp corner (401); In the first buckle structure (205), the second buckle portion (202) is located below the first buckle portion (201) in the first direction, and the side of the second buckle portion (202) away from the third buckle portion (203) in the second direction gradually inclines toward the side away from the second buckle structure (206) along the direction from the first buckle portion (201) to the second buckle portion (202); In the second snap-on structure (206), the second snap-on portion (202) is located below the first snap-on portion (201) in the first direction, and the side of the second snap-on portion (202) away from the third snap-on portion (203) in the second direction gradually inclines toward the side close to the second snap-on structure (206) along the direction from the first snap-on portion (201) to the second snap-on portion (202).

7. The grounding body (30) according to claim 5, characterized in that: When the grounding body (30) is in a state of contacting the external rail (10), the side of the grounding body base structure (1) facing the external rail (10) is formed as a first side (101), and the side away from the external rail (10) is formed as a second side (102); the middle of the first side (101) is bent and convex along the direction from the second side (102) to the first side (101), and the two sides are bent and concave along the direction from the first side (101) to the second side (102); the middle of the second side (102) is bent and concave along the direction from the second side (102) to the first side (101), and the two sides are bent and convex along the direction from the first side (101) to the second side (102).

8. The grounding body (30) according to claim 1, characterized in that: The grounding body base structure (1) is formed with a first assembly side surface (103) and a second assembly side surface (104) on both sides in the thickness direction thereof, the first assembly side surface (103) being provided with a first connection structure (105), and the second assembly side surface (104) being provided with a second connection structure (106) capable of connecting and cooperating with the first connection structure (105) at a corresponding position; One of the first connection structure (105) and the second connection structure (106) is configured as a connection protrusion (107) protruding outward, and the other of the first connection structure (105) and the second connection structure (106) is configured as a connection groove (108) matching the connection protrusion (107); The grounding body base structure (1) is provided with a second current-carrying connection portion (5) that cooperates with the first current-carrying connection portion (20-1) on the current-carrying body (20); One of the first current-carrying connection portion (20-1) and the second current-carrying connection portion (5) is configured as a connection block (6), and the other of the first current-carrying connection portion (20-1) and the second current-carrying connection portion (5) is configured as a connection hole (7) matching the connection block (6); the height of the connection block (6) is greater than the depth of the connection hole (7); One or more first current-carrying connection parts (20-1) are provided, and correspondingly, the number of the second current-carrying connection parts (5) provided matches the number of the first current-carrying connection parts (20-1); The grounding body (30) is provided with a positioning and fixing foot (8), the positioning and fixing foot (8) is arranged on one side of the grounding body (30) in the second direction, and extends outwards along the second direction.

9. A terminal block, which is used for installation on an external rail (10), characterized in that: It comprises a current carrier (20) and a grounding body (30) as claimed in any one of claims 1 to 8, wherein the current carrier (20) is connected to the grounding body (30).

10. The terminal block according to claim 9, characterized in that: One or more grounding bodies (30) are provided. When a plurality of grounding bodies (30) are provided, the plurality of grounding bodies (30) are stacked along the thickness thereof; The terminal block comprises a housing (40), and the current carrier (20) and the grounding body (30) are arranged on the housing (40); When the shell (40) is matched with the external rail (10), a side facing the external rail (10) is provided with an elastic clamping foot (40-1) for clamping with one side of the external rail (10), and a clamping foot matching portion (40-2) for clamping with the other side of the external rail (10); the elastic clamping foot (40-1) and the clamping foot matching portion (40-2) are arranged at a distance in the second direction, and the elastic clamping foot (40-1) has a tendency to clamp and press the external rail (10) when the terminal block is installed on the external rail (10); The elastic clamping foot (40-1) and the clamping foot matching part (40-2) are respectively clamped with the outer sides of both sides of the external track (10); the distance between the elastic clamping foot (40-1) and the clamping foot matching part (40-2) under normal conditions is smaller than the distance between the outer sides of both sides of the external track (10); the elastic clamping foot (40-1) has a tendency to move toward the side close to the clamping foot matching part (40-2) when it is away from the clamping foot matching part (40-2) compared to the normal conditions; The elastic clamping foot (40-1) is provided with a first clamping groove (40-11) for clamping with a first clamping edge (10-11) on one side of the external track (10); the clamping foot matching portion (40-2) is provided with a second clamping groove (40-21) for clamping with a second clamping edge (10-12) on the other side of the external track (10); The housing (40) is provided with a current carrier installation groove (40-3) matching the current carrier (20) at a location for installing the current carrier (20), and a grounding body installation groove (40-4) matching the grounding body (30) at a location for installing the grounding body (30), and the housing (40) is also provided with an insertion port (40-5) connected to the current carrier installation groove (40-3) for inserting an external conductor to match the current carrier (20); The current carrier (20) comprises a current carrier body (20-2), and an elastic limiting member (20-3) arranged on the current carrier body (20-2) and used to cooperate with the current carrier body (20-2) to clamp an external conductor, and the grounding body (30) is connected to the current carrier body (20-2).

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