CN216218038U - Voltage sampling structure and plug-in circuit breaker - Google Patents

Abstract

The utility model discloses a voltage sampling structure and a plug-in circuit breaker, and relates to the technical field of electrical elements. According to the voltage sampling structure and the plug-in circuit breaker, the voltage sampling structure is connected with the strong current part conveniently, operation is convenient, and efficiency is high.

Description

Voltage sampling structure and plug-in circuit breaker

Technical Field

The utility model relates to the technical field of electrical elements, in particular to a voltage sampling structure and a plug-in circuit breaker.

Background

The circuit breaker is a switching device capable of closing, bearing and breaking current under normal loop conditions, along with rapid development of electric power and communication technology in China, higher and higher requirements are provided for the practicability, safety and reliability of terminal electrical equipment such as the circuit breaker, the traditional circuit breaker can not meet the requirements far away, in continuous research and development, the circuit breaker not only reaches a new level in the aspects of miniaturization, intellectualization, reliability and the like, a plurality of brand new designs are structurally provided, if the circuit breaker can be conveniently plugged and unplugged like a common electric plug, the circuit breaker can be conveniently installed in or withdrawn from a circuit, the circuit breaker can be locked in a stable working state in an installation position, meanwhile, the circuit breaker can adapt to various requirements of intellectualization on power supply quality, automatic control and the like, and the circuit breaker is called as a plug-in circuit breaker.

At plug-in circuit breaker during operation, need monitor the voltage of the binding post department of each utmost point, in order to ensure plug-in circuit breaker's normal work, the voltage that detects simultaneously can cooperate with other electricity parameters, calculate the electric quantity that has used, current voltage detection is usually through partly with forceful electric power and voltage sampling structure fixed connection, the both ends that adopt pencil or electrically conductive piece at present are connected with forceful electric power part and voltage sampling structure respectively and are realized, make voltage sampling structure can learn the voltage of forceful electric power part, current connected mode equipment degree of difficulty is high, low efficiency, be unfavorable for automatic equipment.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a voltage sampling structure and a plug-in circuit breaker, wherein the voltage sampling structure is connected with a strong current part conveniently and efficiently.

The embodiment of the utility model is realized by the following steps:

the utility model provides a voltage sampling structure, includes the casing and set up in the wire frame in the casing, the wire frame is used for connecting plug-in circuit breaker's input, still including setting up the sampling circuit board in wire frame one side, and the sampling circuit board passes through the elastic component with the wire frame and is connected to signal of telecommunication transmission to the sampling circuit board on with the wire frame.

As an implementable mode, the wiring frame includes a plurality of, and a plurality of wiring frames are linear arrangement in proper order and set up, correspond a plurality of wiring frames on the sampling circuit board and be provided with a plurality of pads, and the sampling circuit board is the same with the range direction of wiring frame.

As an implementable mode, the wiring frame comprises a plurality of wiring frames which are arranged in a row-column mode, a plurality of bonding pads are arranged on the sampling circuit board corresponding to the plurality of wiring frames, and the bonding pads are arranged corresponding to the wiring frames.

As an implementable mode, the inner wall of the shell is provided with a limiting part corresponding to the side edge of the sampling circuit board, and the sampling circuit board is inserted into the limiting part to fix the position of the sampling circuit board.

As an implementable mode, a plurality of welding discs are arranged on the sampling circuit board corresponding to the plurality of wiring frames.

As an implementation manner, the elastic member is a torsion spring, one torsion arm of the torsion spring abuts against the pad, and the other torsion arm abuts against the wiring frame.

As an implementable manner, the elastic piece is a spring piece, one end of the spring piece is welded with the sampling circuit board or abutted against the bonding pad, and the other end of the spring piece is abutted against the wiring frame.

As one practical way, a plurality of wire frames are disposed in the panel of the plug-in circuit breaker, the panel is provided with a plurality of through grooves along the arrangement direction perpendicular to the wire frames, and the elastic member is inserted into the panel along the through grooves and abuts against the wire frames.

As an implementable mode, the elastic piece is a pressure spring, one end of the pressure spring abuts against the wiring frame, and the other end of the pressure spring abuts against the bonding pad.

As an implementation manner, a plurality of wire frames are disposed in a panel of the plug-in circuit breaker, a circular hole is formed in the panel, and the pressure spring passes through the circular hole and abuts against the wire frames.

The utility model provides a plug-in circuit breaker, includes foretell voltage sampling structure and plug-in circuit breaker body, the sampling circuit board of voltage sampling structure sets up in the plug-in circuit breaker body near the wiring end of plug-in circuit breaker body.

The embodiment of the utility model has the beneficial effects that:

the utility model provides a voltage sampling structure, which comprises a shell and a wiring frame arranged in the shell, wherein the wiring frame is used for connecting an input end of a plug-in circuit breaker, the voltage sampling structure also comprises a sampling circuit board arranged on one side of the wiring frame, and the sampling circuit board is connected with the wiring frame through an elastic piece so as to transmit an electric signal on the wiring frame to the sampling circuit board. The connection frame is used for connecting plug-in circuit breaker's input, the input of circuit breaker is used for connecting the power, connect the power on the connection frame promptly, the sampling circuit board passes through the elastic component with the connection frame and is connected, the elastic component makes sampling circuit board and connection frame electric connection, and the elastic component makes sampling circuit board and connection frame through elasticity, only need compress the elastic component when the installation, the elastic component after the compression has certain potential energy, thereby closely support with the connection frame and hold, connect sampling circuit board and connection frame, make the sampling circuit board convenient with being connected of connection frame, high efficiency. The voltage sampling structure provided by the utility model is convenient to operate and high in efficiency when being connected with the strong current part.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a voltage sampling structure according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of another view of a voltage sampling structure according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another voltage sampling structure according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another voltage sampling structure according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a sampling circuit board according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another voltage sampling structure according to an embodiment of the present invention.

Icon: 100-voltage sampling structure; 110-a housing; 111-a limiting part; 120-a wiring frame; 130-a sampling circuit board; 131-a pad; 140-an elastic member; 141-torsion spring; 142-a spring plate; 143-pressure spring; 150-a panel; 151-through grooves; 152-circular hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "vertical", "horizontal", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed when used, and thus, the present invention should not be construed as being limited thereto.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In an electric power supply system, a circuit breaker is generally adopted to close, carry and break a current of a normal loop, a voltage value of the current in the loop is generally required to be monitored so as to ensure the normal operation of a plug-in circuit breaker, and the detected voltage can be matched with other electrical parameters to calculate the used electric quantity. Current voltage detection is usually through with forceful electric power part and voltage sampling structure fixed connection for voltage sampling structure can learn the voltage of forceful electric power part, and the current connected mode equipment degree of difficulty is high, and is inefficient, is unfavorable for automatic equipment.

The utility model provides a voltage sampling structure 100, as shown in fig. 1 and fig. 2, comprising a housing 110 and a wiring frame 120 arranged in the housing 110, wherein the wiring frame 120 is used for connecting an input end of a plug-in circuit breaker, the voltage sampling structure further comprises a sampling circuit board 130 arranged on one side of the wiring frame 120, and the sampling circuit board 130 is connected with the wiring frame 120 through an elastic piece 140 so as to transmit an electric signal on the wiring frame 120 to the sampling circuit board 130.

The wiring frame 120 is connected with the input end of the plug-in circuit breaker, the wiring frame 120 is provided with an electric signal which is the same as the input end of the plug-in circuit breaker, the sampling circuit board 130 is connected with the wiring frame 120 through the elastic piece 140, the elastic piece 140 is a conductive element, so that the electric signal on the wiring frame 120 is transmitted to the sampling circuit board 130, the sampling circuit board 130 processes the collected electric signal and transmits the collected electric signal on the next step to finish voltage sampling.

It should be noted that the voltage sampling structure 100 in fig. 1 is a schematic structural diagram illustrating the sampling circuit board 130 being detached, in practical application, the sampling circuit board 130 is disposed close to the wire frame 120, and the elastic element 140 abuts against the wire frame 120.

In the voltage sampling structure 100 provided by the utility model, the wiring frame 120 is used for connecting the input end of the plug-in circuit breaker, the input end of the circuit breaker is used for connecting a power supply, namely, the wiring frame 120 is connected with the power supply, the sampling circuit board 130 is connected with the wiring frame 120 through the elastic piece 140, the elastic piece 140 enables the sampling circuit board 130 to be electrically connected with the wiring frame 120, and the elastic piece 140 enables the sampling circuit board 130 and the wiring frame 120 to be electrically connected through elasticity, only the elastic piece 140 needs to be compressed when the voltage sampling structure is installed, and the compressed elastic piece 140 has certain potential energy, so that the elastic piece is tightly abutted against the wiring frame 120 to connect the sampling circuit board 130 and the wiring frame 120, so that the sampling circuit board 130 and the wiring frame 120 are conveniently connected and efficiently. According to the voltage sampling structure 100 provided by the utility model, the connection between the voltage sampling structure 100 and a strong current part is convenient to operate, and the efficiency is high.

Optionally, as shown in fig. 1, the plurality of wiring frames 120 are included, the plurality of wiring frames 120 are sequentially arranged in a straight line, a plurality of bonding pads 131 are arranged on the sampling circuit board 130 corresponding to the plurality of wiring frames 120, and the arrangement direction of the sampling circuit board 130 is the same as that of the wiring frames 120.

Optionally, as shown in fig. 6, the connection frame 120 includes a plurality of connection frames 120 arranged in a row-by-row manner, a plurality of bonding pads 131 are disposed on the sampling circuit board 130 corresponding to the plurality of connection frames 120, and the bonding pads 131 are disposed corresponding to the connection frames 120.

In practical application, the power supply includes a three-phase ac power supply, a three-live wire ac power supply, a single-phase ac power supply, a two-live wire power supply or a dc power supply, the number of the input terminals corresponding to different power circuit breakers is different, and the number of the connection frames 120 is different. The terminal block 120 includes a plurality of terminals that enable the voltage sampling structure to be used with a variety of different power sources, extending the range of use of the voltage sampling structure 100.

The arrangement mode of the plurality of wiring frames 120 can be linear arrangement or determinant arrangement, and can be set according to the space size and the model of the breaker body in actual conditions, and when the plurality of wiring frames are linearly arranged, the corresponding sampling circuit board is arranged along the linear direction; when a plurality of wiring frames are arranged in a determinant mode, the corresponding sampling circuit boards are arranged in a square mode.

In an implementation manner of the embodiment of the present invention, as shown in fig. 1, 3 and 4, the inner wall of the housing 110 is provided with a limiting portion 111 corresponding to a side edge of the sampling circuit board 130, and the sampling circuit board 130 is inserted into the limiting portion 111 to fix the position of the sampling circuit board 130.

The sampling circuit board 130 is connected with the wire frame 120 through the elastic member 140, in order to ensure that the elastic member 140 can electrically connect the sampling circuit board 130 with the wire frame 120, the elastic member 140 is compressed between the sampling circuit board 130 and the wire frame 120, the compressed elastic member 140 has a certain elastic potential energy, the wire frame 120 is fixedly disposed in the housing 110, the elastic potential energy of the elastic element 140 can displace the sampling circuit board 130 to prevent the electrical signal from being transmitted to the sampling circuit board 130, in order to avoid the above situation, in the embodiment of the present invention, the limit portion 111 is disposed on the inner wall of the housing 110 corresponding to the side edge of the sampling circuit board 130, the sampling circuit board 130 is inserted into the limit portion 111 to fix the position of the sampling circuit board 130, and the limit portion 111 can fix the position of the sampling circuit board 130 to ensure the electrical connection between the sampling circuit board 130 and the wire frame 120, so that the sampling circuit board 130 can obtain the electrical signal on the wire frame 120.

It should be noted that the form, number, and arrangement of the limiting portions 111 of the present invention are not specifically limited, and may be specifically arranged according to specific situations as long as the position of the sampling circuit board 130 can be fixed, for example, the limiting portions 111 may be two mutually close flanges arranged on the housing 110, a groove is formed between the two flanges, four limiting portions 111 are dispersedly arranged on the housing 110, and the sampling circuit board 130 is inserted into the groove, and it should be known to those skilled in the art that the limiting portions 111 are only used for fixing the position of the sampling circuit board 130, and the height of the limiting portions 111 is determined by the arrangement position that is not affected so as not to affect the normal operation of the sampling circuit board 130.

It should be noted that, as shown in fig. 1, fig. 3 and fig. 4, the sampling circuit board 130 is a schematic structural diagram of the voltage sampling structure, and in practical use, the sampling circuit board 130 is inserted into the limiting portion 111. It should be noted that, in order to show the voltage sampling structure more clearly, fig. 3 and fig. 4 are schematic diagrams of removing the housing 110, and in practical applications, the housing 110 is disposed on the periphery of the voltage sampling structure.

Optionally, as shown in fig. 5, a plurality of bonding pads 131 are disposed on the sampling circuit board 130 corresponding to the plurality of wire frames 120.

The plurality of wire frames 120 are sequentially arranged in a straight line, in order to enable the plurality of wire frames 120 to be correspondingly connected with the sampling circuit board 130, a plurality of bonding pads 131 are correspondingly arranged on the sampling circuit board 130, and the elastic piece 140 is connected with the corresponding bonding pads 131 and the wire frames 120, so that the electric signals on the wire frames 120 are transmitted to the bonding pads 131 of the sampling circuit board 130. It should be noted that the number of the pads 131, the number of the wire frames 120, and the number of the elastic members 140 should be the same. The flexibility of the elastic member 140 can be improved by contacting the pad 131 on the sampling circuit board 130 with the elastic member 140, so that the mounting manner is diversified.

In an implementation manner of the embodiment of the present invention, as shown in fig. 4, the elastic member 140 is a torsion spring 141, one torsion arm of the torsion spring 141 abuts against the pad 131, and the other torsion arm abuts against the wire frame 120.

When the elastic member 140 is a torsion spring 141, the torsion spring 141 has a relatively large elastic force and can be in close contact with the bonding pad 131 and the wire frame 120 to complete transmission of the electrical signal.

In order to increase the contact area between the torsion arm of the torsion spring 141 and the pad 131 and the wire frame 120, the torsion arm may be set to be 7-shaped or rectangular, the area between the torsion arm and the pad 131 and the wire frame 120 is increased, which is beneficial to the transmission of electrical signals, and meanwhile, the torsion spring 141 can be prevented from inclining due to elasticity when the voltage sampling structure 100 is installed, so that the torsion spring 141 cannot abut against the pad 131 and the wire frame 120.

In an implementation manner of the embodiment of the present invention, as shown in fig. 1, the elastic member 140 is an elastic sheet 142, one end of the elastic sheet 142 is welded to the sampling circuit board 130 or abuts against the pad 131, and the other end abuts against the wire frame 120.

The elastic sheet 142 is used as one of the elastic members 140, one end of the elastic sheet is welded to the sampling circuit board 130, and the other end of the elastic sheet is abutted to the wiring frame 120 after being pressed when being installed, so that elastic deformation occurs and certain potential energy is provided, the elastic sheet 142 is in close contact with the wiring frame 120, and transmission of an electric signal is completed. The elastic piece 142 is used as the elastic piece 140, so that the connection structure is relatively stable.

In an implementation manner of the embodiment of the present invention, as shown in fig. 1 and fig. 4, a plurality of wire frames 120 are disposed in a panel 150 of the plug-in circuit breaker, the panel 150 is provided with a plurality of through slots 151 along a direction perpendicular to an arrangement direction of the wire frames 120, and the elastic member 140 is inserted into the panel 150 along the through slots 151 and abuts against the wire frames 120.

The wiring frame 120 is used for connecting the input end of the plug-in type circuit breaker, the input end of the plug-in type circuit breaker is used for being externally connected with a power supply, each phase of the power supply is correspondingly connected with the wiring frame 120, that is, each of the wire frames 120 has an electrical input, and the plurality of wire frames 120 are sequentially arranged in a straight line and made of a conductive material, a circuit merging phenomenon occurs after the plurality of wire frames 120 have contact, generally, a plurality of terminal frames 120 are disposed in the panel 150 of the plug-in circuit breaker, each terminal frame 120 is separated by the panel 150, the panel 150 is made of plastic or other insulating material, the insulation between the terminal frames 120 can be realized, however, the panel 150 surrounds the wire frame 120 such that the wire frame 120 cannot contact the elastic members 140, therefore, a through slot 151 is formed on the panel 150 corresponding to each wire frame 120, so that the elastic element 140 is inserted into the panel 150 through the through slot 151 and abuts against the wire frame 120.

When the elastic member 140 is the torsion spring 141, one torsion arm of the torsion spring 141 contacts the wiring frame 120, and the body of the torsion spring 141 faces upward, when the voltage sampling structure 100 is installed, the sampling circuit board 130 is inserted into the groove of the limiting portion 111 from top to bottom, and in the process that the sampling circuit board 130 is from top to bottom, the other arm of the torsion spring 141 gradually approaches to the one torsion arm of the torsion spring 141, so that the torsion spring 141 has certain elastic potential energy and finally abuts against the pad 131 on the sampling circuit board 130, thereby achieving the electrical connection between the sampling circuit board 130 and the wiring frame 120.

When the elastic member 140 is the elastic piece 142, the other end of the elastic piece 142 is welded to the sampling circuit board 130, when the voltage sampling structure 100 is installed, the sampling circuit board 130 is inserted into the groove of the limiting portion 111 from top to bottom, the elastic piece 142 slides into the groove of the U-shaped groove and moves downward in the process that the sampling circuit board 130 is from top to bottom, and finally the other end of the elastic piece 142 abuts against the wiring frame 120 located in the panel 150, so that the electrical connection between the sampling circuit board 130 and the wiring frame 120 is completed.

Alternatively, as shown in fig. 3, the elastic member 140 is a compression spring 143, one end of the compression spring 143 abuts against the terminal frame 120, and the other end of the compression spring 143 abuts against the pad 131.

When the elastic member 140 is a compression spring 143, one end of the compression spring 143 abuts against the wiring frame 120, and the other end abuts against the bonding pad 131, so that the sampling circuit board 130 is electrically connected to the wiring frame 120.

In an implementation manner of the embodiment of the present invention, as shown in fig. 3, the plurality of wire frames 120 are disposed in a panel 150 of the plug-in circuit breaker, a circular hole 152 is formed in the panel 150, and the compression spring 143 passes through the circular hole 152 and abuts against the wire frames 120.

In order to insulate the wire frames 120 from each other, a plurality of wire frames 120 are generally disposed on the panel 150, and a circular hole 152 is formed in the panel 150 so that the pressing spring 143 contacts the wire frame 120 located on the panel 150.

When the elastic member 140 is a compression spring 143, when the voltage sampling structure 100 is installed, one end of the compression spring 143 passes through the circular hole 152 to contact the wiring frame 120, and the sampling circuit board 130 is inserted into the groove of the limiting portion 111 from top to bottom, and in the process that the sampling circuit board 130 is from top to bottom, the compression spring 143 is compressed so that the compression spring 143 has certain elastic potential energy and finally abuts against the pad 131 on the sampling circuit board 130, so that the electrical connection between the sampling circuit board 130 and the wiring frame 120 is realized.

The round hole 152 not only plays a role in enabling the pressure spring 143 to penetrate through the connection sampling circuit board 130 and the wiring frame 120, but also has a guiding function for the pressure spring 143 in the installation process.

The utility model also provides a plug-in circuit breaker, which comprises the voltage sampling structure 100 and a plug-in circuit breaker body, wherein the sampling circuit board 130 of the voltage sampling structure 100 is arranged in the plug-in circuit breaker body and is close to the wiring terminal of the plug-in circuit breaker body. The plug-in circuit breaker has the same structure and advantageous effects as the voltage sampling structure 100 in the foregoing embodiment. The structure and the advantageous effects of the voltage sampling structure 100 have been described in detail in the foregoing embodiments, and are not repeated herein.

It should be noted that the voltage sampling structure 100 and the plug-in circuit breaker body share a housing 110, wherein the wiring frame 120 is disposed in the panel 150 of the circuit breaker body for connecting with the input terminal of the plug-in circuit breaker body, and becomes the wiring terminal of the input terminal of the plug-in circuit breaker.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (11)

1. A voltage sampling structure (100) is characterized by comprising a shell (110) and a wiring frame (120) arranged in the shell (110), wherein the wiring frame (120) is used for connecting an input end of a plug-in circuit breaker, the voltage sampling structure further comprises a sampling circuit board (130) arranged on one side of the wiring frame (120), and the sampling circuit board (130) is connected with the wiring frame (120) through an elastic piece (140) so as to transmit an electric signal on the wiring frame (120) to the sampling circuit board (130).

2. The voltage sampling structure (100) according to claim 1, wherein the connection frame (120) comprises a plurality of connection frames (120), the plurality of connection frames (120) are sequentially arranged in a straight line, and the arrangement directions of the sampling circuit boards (130) and the connection frames (120) are the same.

3. The voltage sampling structure (100) according to claim 1, wherein the wire frame (120) comprises a plurality of wire frames (120), the plurality of wire frames (120) are arranged in a row-column manner, and the sampling circuit board (130) is arranged corresponding to the wire frame (120).

4. The voltage sampling structure (100) according to claim 1, wherein a limiting portion (111) is disposed on an inner wall of the housing (110) corresponding to a side edge of the sampling circuit board (130), and the sampling circuit board (130) is inserted into the limiting portion (111) to fix a position of the sampling circuit board (130).

5. The voltage sampling structure (100) according to claim 2 or 3, wherein a plurality of pads (131) are provided on the sampling wiring board (130) corresponding to a plurality of the wiring frames (120).

6. The voltage sampling structure (100) according to claim 5, wherein the elastic member (140) is a torsion spring (141), one torsion arm of the torsion spring (141) abuts against the pad (131), and the other torsion arm abuts against the wire frame (120).

7. The voltage sampling structure (100) according to claim 5, wherein the elastic member (140) is a spring (142), one end of the spring (142) is soldered to the sampling circuit board (130) or abuts against the pad (131), and the other end abuts against the wire frame (120).

8. The voltage sampling structure (100) according to claim 7, wherein a plurality of the terminal frames (120) are disposed in a panel (150) of the plug-in circuit breaker, the panel (150) is provided with a plurality of through slots (151) along a direction perpendicular to an arrangement direction of the terminal frames (120), and the elastic member (140) is inserted into the panel (150) along the through slots (151) and abuts against the terminal frames (120).

9. The voltage sampling structure (100) according to claim 5, wherein the elastic member (140) is a compression spring (143), one end of the compression spring (143) abuts against the terminal frame (120), and the other end of the compression spring (143) abuts against the pad (131).

10. The voltage sampling structure (100) according to claim 9, wherein a plurality of the wire frames (120) are disposed in a panel (150) of the plug-in circuit breaker, a circular hole (152) is opened on the panel (150), and the compression spring (143) passes through the circular hole (152) and abuts against the wire frame (120).

11. Plug-in circuit breaker, characterized in that it comprises a voltage sampling structure (100) according to any one of claims 1 to 10 and a plug-in circuit breaker body, the sampling circuit board (130) of the voltage sampling structure (100) being arranged inside the plug-in circuit breaker body close to the terminals of the plug-in circuit breaker body.

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