Wiring terminal for circuit board

Abstract

The utility model discloses a wiring terminal for a circuit board, and relates to the technical field of wiring terminals. According to the main technical scheme, the electric connector comprises a terminal base, a locking piece, a conductive column, a first conductive sheet and a second conductive sheet, a wiring hole is formed in the terminal base, and the locking piece is arranged on one side wall of the wiring hole; the conductive column penetrates through the hole bottom of the wiring hole, and one end, far away from the hole opening of the wiring hole, of the conductive column is connected to a circuit board; the first conducting strip is arranged at the bottom of the wiring hole and is connected with one end, close to the opening of the wiring hole, of the conducting column; the second conducting strip is arranged in the wiring hole; the second conducting strip is slidably arranged on the side, away from the conducting column, of the first conducting strip, and the second conducting strip is connected with the locking piece. The second conducting strip is used for getting close to or getting away from the other side wall of the wiring hole under the action of the locking piece. Therefore, the purpose of improving the contact reliability between the wiring terminal and the external wiring so as to improve the electrical connection performance between the circuit board and the module is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a wiring terminal technical field, concretely relates to a wiring terminal for circuit board. BACKGROUND

[0002] The wiring terminal is a kind of accessory product for realizing electrical connection.

[0003] With the increasingly high degree of industrial automation and increasingly strict and accurate industrial control requirements, the consumption of wiring terminal gradually rises, and the use range is more and more wide. Among them, the wiring terminal on the circuit board is used to external module, to achieve the purpose of controlling module through circuit board.

[0004] The prior art discloses a wiring terminal for circuit board, including terminal seat, the elastic sheet that can be communicated with external wiring electricity and locking piece, terminal seat is used to be fixedly connected with the upper surface of circuit board, and terminal seat has the wiring hole for the external wiring on it, and the center line of wiring hole can pass through the operating port of equipment;The inner wall of the side of wiring hole and external wiring abutting is set to abutting portion;The elastic sheet one end is fixedly connected on the hole bottom of wiring hole, and the other end can make external wiring abut on abutting portion;Locking piece is arranged on terminal seat, and locking piece can make the elastic sheet deformation to the direction where abutting portion is located.

[0005] In use, locking piece makes the elastic sheet bending deformation to the direction where abutting portion is located, to make the elastic sheet abut external wiring on abutting portion. However, when the elastic sheet is in the bending state, the elastic sheet gradually moves away from abutting portion along the direction of wiring hole orifice to wiring hole bottom, so that the pressure that the elastic sheet exerts on external wiring gradually decreases along the direction of wiring hole orifice to wiring hole bottom. Wherein, the non-uniform pressure distribution can weaken the contact reliability between external wiring and elastic sheet, and further affect the performance of electrical connection between circuit board and module. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a wiring terminal for circuit board, solves the wiring terminal for circuit board in the prior art, when the elastic sheet is in the bending state, the elastic sheet gradually moves away from abutting portion along the direction of wiring hole orifice to wiring hole bottom, so that the pressure that the elastic sheet exerts on external wiring gradually decreases along the direction of wiring hole orifice to wiring hole bottom. Wherein, the non-uniform pressure distribution can weaken the contact reliability between external wiring and elastic sheet, and further affect the performance of electrical connection between circuit board and module.

[0007] To solve the above technical problems, the utility model adopts the following technical scheme:

[0008] A terminal for a circuit board, comprising a terminal seat, a locking member, a conductive post, a first conductive sheet and a second conductive sheet, the terminal seat is provided with a terminal hole, the locking member is arranged on one side wall of the terminal hole; the conductive post is arranged at the bottom of the terminal hole, and one end of the conductive post away from the hole mouth of the terminal hole is used for connecting to the circuit board; the first conductive sheet is arranged at the bottom of the terminal hole, and one end of the first conductive sheet close to the hole mouth of the terminal hole is connected with the conductive post; the second conductive sheet is arranged in the terminal hole, and is used for abutting the external terminal to the other side wall of the terminal hole; the second conductive sheet is slidingly arranged on the side of the first conductive sheet away from the conductive post, and is connected with the locking member; wherein the second conductive sheet is used for moving close to or away from the other side wall of the terminal hole under the action of the locking member.

[0009] Further, the first conductive sheet is provided with a sliding groove on the side away from the conductive post; the sliding groove extends along one side wall of the terminal hole to the other side wall of the terminal hole; and the second conductive sheet is adapted to the sliding groove.

[0010] Further, the second conductive sheet is filled with conductive grease between the sliding groove.

[0011] Further, the locking member comprises a threaded rod; the threaded rod is arranged in one side wall of the terminal hole, and is screwed with the one side wall of the terminal hole; and one end of the threaded rod close to the other side wall of the terminal hole is rotationally connected with the second conductive sheet.

[0012] Further, the second conductive sheet is provided with an insulating sheet on the side away from the other side wall of the terminal hole; and the insulating sheet is rotationally connected with one end of the threaded rod close to the other side wall of the terminal hole.

[0013] Further, the distance between one end of the second conductive sheet close to the hole mouth of the terminal hole and the bottom of the terminal hole is less than the distance between the hole mouth of the terminal hole and the bottom of the terminal hole.

[0014] Further, the terminal further comprises a third conductive sheet; the third conductive sheet is arranged on the other side wall of the terminal hole; the third conductive sheet is oppositely arranged with the second conductive sheet, and is connected with the first conductive sheet.

[0015] Further, the distance between one end of the third conductive sheet close to the hole mouth of the terminal hole and the bottom of the terminal hole is less than the distance between the hole mouth of the terminal hole and the bottom of the terminal hole.

[0016] Compared with the prior art, the utility model has the advantages of

[0017] On the one hand, the second conductive sheet is connected with the first conductive sheet, and the first conductive sheet is connected with the conductive column, which can effectively ensure the electrical connection performance between the circuit board and the module.

[0018] On the other hand, in the process that the second conductive sheet compresses the external wiring on the other side wall of the wiring hole, the second conductive sheet and the other side wall of the wiring hole can be effectively ensured to be in parallel, thereby effectively ensuring that the external wiring is uniformly pressed on the entire contact surface, and the contact reliability between the wiring terminal and the external wiring is improved, so as to improve the electrical connection performance between the circuit board and the module. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a cross-sectional structure schematic view of the wiring terminal for the circuit board in the embodiment.

[0020] Markings in the drawings and corresponding component names:

[0021] 1-terminal seat;2-locking part;3-wiring hole;4-conductive column;5-first conductive sheet;6-second conductive sheet;7-slotted guide;8-insulating sheet;9-third conductive sheet. DETAILED DESCRIPTION

[0022] The utility model will be further described below in combination with the drawings.

[0023] Embodiment 1

[0024] The prior patent with application number 202121615008.0 discloses a wiring terminal for a circuit board, which comprises a terminal seat, a spring sheet capable of being in electrical communication with external wiring and a locking part, the terminal seat is used for fixed connection with the upper surface of the circuit board, and the terminal seat is provided with a wiring hole for the external wiring to be put in, and the center line of the wiring hole can pass through the operation port of the equipment;The inner wall of the side of the wiring hole in contact with the external wiring is provided as a pressing part;One end of the spring sheet is fixedly connected to the hole bottom of the wiring hole, and the other end can press the external wiring against the pressing part;The locking part is arranged on the terminal seat, and the locking part can make the spring sheet deform in the direction of the pressing part.

[0025] In use, the locking part makes the spring sheet bend and deform in the direction of the pressing part, so that the spring sheet presses the external wiring against the pressing part. However, when the spring sheet is in a bent state, the spring sheet gradually moves away from the pressing part in the direction from the hole opening to the hole bottom of the wiring hole, so that the pressure exerted by the spring sheet on the external wiring gradually decreases in the direction from the hole opening to the hole bottom of the wiring hole. Among them, the non-uniform pressure distribution may weaken the contact reliability between the external wiring and the spring sheet, and further affect the electrical connection performance between the circuit board and the module

[0026] Therefore, this embodiment 1 provides a wiring terminal for a circuit board, such as Figure 1 As shown, it includes a terminal base 1, a locking member 2, a conductive column 4, a first conductive sheet 5 and a second conductive sheet 6. The terminal base 1 is provided with a wiring hole 3, and the locking member 2 is provided on a side wall of the wiring hole 3; the conductive column 4 is passed through the bottom of the wiring hole 3, and the end of the conductive column 4 away from the opening of the wiring hole 3 is used to be connected to the circuit board; the first conductive sheet 5 is provided at the bottom of the wiring hole 3, and the first conductive sheet 5 is connected to the end of the conductive column 4 close to the opening of the wiring hole 3; the second conductive sheet 6 is provided in the wiring hole 3, and the second conductive sheet 6 is used to press the external wiring against the other side wall of the wiring hole 3; the second conductive sheet 6 is slidably provided on the side of the first conductive sheet 5 away from the conductive column 4, and the second conductive sheet 6 is connected to the locking member 2; wherein, the second conductive sheet 6 is used to approach or move away from the other side wall of the wiring hole 3 under the action of the locking member 2.

[0027] For example, in the implementation process, the terminal block 1 and the locking member 2 are made of an insulating material such as epoxy resin, silicone resin, phenolic resin, polyester, polybutadiene, etc., and the terminal block 1 and the locking member 2 can adopt the structure of the prior art. The terminal block 1 is provided with a wiring hole 3, and the locking member 2 is mounted on a side wall of the wiring hole 3.

[0028] The conductive post 4, first conductive plate 5, and second conductive plate 6 are all made of conductive materials such as copper or copper alloy. The conductive post 4 is attached to the bottom of the terminal hole 3 through injection molding, gluing, or other methods. The conductive post 4 extends from the opening of the terminal hole 3 toward the bottom of the hole and penetrates the terminal block 1. This allows the end of the conductive post 4 away from the opening of the terminal hole 3 to be soldered to the circuit board, ensuring good electrical conductivity between the conductive post 4 and the circuit board.

[0029] The first conductive sheet 5 is installed at the bottom of the wiring hole 3 by welding, screwing, gluing, etc., and the first conductive sheet 5 is connected to the end of the conductive column 4 close to the opening of the wiring hole 3 by welding, screwing or integral molding to ensure the conductive performance between the first conductive sheet 5 and the conductive column 4.

[0030] The second conductive sheet 6 is installed within the wiring hole 3 and is used to press the external wiring against the other side wall of the wiring hole 3. The second conductive sheet 6 can slide on the first conductive sheet 5 and is in close contact with the first conductive sheet 5 to ensure electrical conductivity between the second conductive sheet 6 and the first conductive sheet 5. The second conductive sheet 6 is connected to the end of the locking member 2 near the wiring hole 3 by welding, screwing, gluing, etc., so that the second conductive sheet 6 can move on the first conductive sheet 5 toward or away from the other side wall of the wiring hole 3 under the drive of the locking member 2.

[0031] When it is necessary to connect an external wiring, place the external wiring between the second conductive sheet 6 and the other side wall of the wiring hole 3. Then, operate the locking piece 2 to push the second conductive sheet 6 to slide along the first conductive sheet 5 in the direction close to the other side wall of the wiring hole 3 until the second conductive sheet 6 firmly presses the external wiring against the other side wall of the wiring hole 3. On the one hand, the second conductive sheet 6 is connected to the first conductive sheet 5, and the first conductive sheet 5 is connected to the conductive column 4, which can effectively ensure the electrical connection performance between the circuit board and the module. On the other hand, in the process of the second conductive sheet 6 pressing the external wiring against the other side wall of the wiring hole 3, it can effectively ensure that the second conductive sheet 6 and the other side wall of the wiring hole 3 are in a parallel state, thereby effectively ensuring that the external wiring is subjected to uniform pressure on the entire contact surface, thereby achieving the purpose of improving the contact reliability between the wiring terminal and the external wiring, and improving the electrical connection performance between the circuit board and the module. On the other hand, the locking member 2 can drive the second conductive plate 6 to move on the first conductive plate 5 toward or away from the other side wall of the wiring hole 3, thereby changing the distance between the second conductive plate 6 and the other side wall of the wiring hole 3 to adapt to external wiring of different diameters.

[0032] When it is necessary to remove the external wiring, the locking member 2 is operated to push the second conductive sheet 6 to slide along the first conductive sheet 5 in a direction away from the other side wall of the wiring hole 3 .

[0033] Example 2

[0034] like Figure 1 As shown, based on the above-mentioned embodiment 1, in this embodiment, a slide groove 7 is provided on the side of the first conductive sheet 5 away from the conductive column 4; the slide groove 7 extends along one side wall of the wiring hole 3 toward the other side wall of the wiring hole 3; the second conductive sheet 6 is adapted to be in the slide groove 7.

[0035] For example, during implementation, a slot 7 is defined on the side of the first conductive sheet 5 away from the conductive pillar 4. The slot 7 extends along one sidewall of the wiring hole 3 toward the other sidewall of the wiring hole 3, and the width of the slot 7 matches the width of the second conductive sheet 6. The end of the second conductive sheet 6 near the bottom of the wiring hole 3 fits within the slot 7.

[0036] When it is necessary to connect an external wire, the external wire is put between the second conductive sheet 6 and the other side wall of the wire hole 3. Then, the locking member 2 is operated to push the second conductive sheet 6 to slide along the sliding groove 7 towards the other side wall of the wire hole 3 until the second conductive sheet 6 firmly presses the external wire against the other side wall of the wire hole 3. On the one hand, the sliding groove 7 provides accurate guidance for the second conductive sheet 6 during the process of approaching or moving away from the other side wall of the wire hole 3, thereby effectively ensuring that the second conductive sheet 6 does not deviate during the sliding process, achieving the purpose of improving the stability and reliability during the sliding process. On the other hand, the width of the second conductive sheet 6 matches the width of the sliding groove 7, which can effectively ensure the electrical conductivity between the second conductive sheet 6 and the first conductive sheet 5.

[0037] Embodiment 3

[0038] As shown in the above embodiment 2, in this embodiment, the second conductive sheet 6 and the sliding groove 7 are filled with conductive grease. Figure 1

[0039] Exemplarily, in the implementation process, the conductive grease is a conductive type of lubricating grease refined and formulated by synthetic base oil, conductive carbon black thickening agent and special additives. Commonly used conductive grease includes silver-based conductive grease and copper-based conductive grease, etc. The conductive grease has excellent electrical conductivity and can effectively prevent oxidation and corrosion of the metal surface.

[0040] In use, a brush, a syringe or other tools are used to evenly apply the conductive grease between the sliding groove 7 and the second conductive sheet 6, and to ensure that the contact surface between the second conductive sheet 6 and the sliding groove 7 is covered with the conductive grease. On the one hand, the filled conductive grease can significantly reduce the contact resistance between the second conductive sheet 6 and the first conductive sheet 5, improving the electrical conductivity of the electrical connection. On the other hand, the filled conductive grease can effectively reduce the oxidation rate of the contact surface between the second conductive sheet 6 and the first conductive sheet 5, thereby prolonging the service life of the terminal. On the other hand, the filled conductive grease can effectively reduce the erosion rate of corrosive substances in the environment on the contact surface between the second conductive sheet 6 and the first conductive sheet 5, thereby improving the corrosion resistance of the terminal. At the same time, the filled conductive grease can effectively reduce the vibration of the second conductive sheet 6 in the sliding groove 7, thereby improving the stability of the terminal in a dynamic environment.

[0041] Embodiment 4

[0042] As shown in the above embodiment 2, in this embodiment, the second conductive sheet 6 and the sliding groove 7 are filled with conductive grease. Figure 1 ​As shown, based on the above-mentioned embodiment 2 or embodiment 3, in this embodiment, the locking member 2 includes a threaded rod; the threaded rod is passed through a side wall of the wiring hole 3, and the threaded rod is screwed to a side wall of the wiring hole 3; the end of the threaded rod close to the other side wall of the wiring hole 3 is rotatably connected to the second conductive sheet 6.

[0043] Exemplarily, during implementation, the locking member 2 includes a threaded rod that passes through one side wall of the wiring hole 3 and is screwed to the side wall of the wiring hole 3. The end of the threaded rod near the other side wall of the wiring hole 3 is rotatably connected to the second conductive sheet 6 via a rotating structure such as a bearing or a rotating shaft. On the one hand, by rotating the threaded rod, it is possible to effectively ensure that the second conductive sheet 6 can slide within the slide groove 7 toward or away from the other side wall of the wiring hole 3. On the other hand, the screw connection between the threaded rod and the side wall of the wiring hole 3 can be used to lock the position of the second conductive sheet 6, thereby ensuring that the external wiring is firmly pressed against the other side wall of the wiring hole 3.

[0044] Example 5

[0045] like Figure 1 As shown, based on the above-mentioned embodiment 4, in this embodiment, an insulating sheet 8 is provided on the side of the second conductive sheet 6 away from the other side wall of the wiring hole 3; the insulating sheet 8 is rotatably connected to one end of the threaded rod close to the other side wall of the wiring hole 3.

[0046] Exemplarily, during implementation, the side of the second conductive sheet 6 away from the other side wall of the wiring hole 3 is connected to an insulating sheet 8 by screwing, gluing, welding, or other means. The insulating sheet 8 is made of an insulating material such as epoxy resin, silicone resin, phenolic resin, polyester, or polybutadiene. The insulating sheet 8 is rotatably connected to the end of the threaded rod near the other side wall of the wiring hole 3 via a bearing, a rotating shaft, or other structures to ensure that when the threaded rod rotates, the insulating sheet 8 can drive the second conductive sheet 6 to slide smoothly within the slide groove 7. The insulating sheet 8 is disposed between the threaded rod and the second conductive sheet 6, effectively ensuring electrical isolation between the threaded rod and the second conductive sheet 6, reducing the risk of electrical short circuits, and thereby improving the safety of the terminal block during use.

[0047] Example 6

[0048] When the second conductive sheet 6 presses the external connection against the other side wall of the connection hole 3, the second conductive sheet 6 is connected to the conductive metal of the external connection. Therefore, in order to reduce the risk of electric shock caused by the second conductive sheet 6 being exposed outside the connection hole 3, Figure 1As shown, in the above embodiment 1, in this embodiment, the distance between the one end of the second conductive sheet 6 close to the hole mouth of the wire hole 3 and the hole bottom of the wire hole 3 is less than the distance between the hole mouth of the wire hole 3 and the hole bottom of the wire hole 3.

[0049] For example, in the implementation process, the distance between the one end of the second conductive sheet 6 close to the hole mouth of the wire hole 3 and the hole bottom of the wire hole 3 is less than the distance between the hole mouth of the wire hole 3 and the hole bottom of the wire hole 3. That is, the upper end of the second conductive sheet 6 (the one end close to the hole mouth of the wire hole 3) is lower than the hole mouth of the wire hole 3, so as to effectively reduce the exposure of the second conductive sheet 6 outside the wire hole 3, thereby reducing the risk of electric shock.

[0050] In the process of connecting the external wire, the insulating layer of the external wire used for connecting one end is peeled off, the conductive metal of the external wire used for connecting one end is clamped between the second conductive sheet 6 and the other side wall of the wire hole 3, and the insulating layer of the external wire is located between the upper end of the second conductive sheet 6 and the hole mouth of the wire hole 3. On the one hand, the purpose of effectively reducing the exposure of the conductive metal of the external wire outside the wire hole 3, thereby reducing the risk of electric shock, is achieved. On the other hand, the second conductive sheet 6 only contacts the conductive metal in the locking process, thereby achieving the purpose of effectively reducing the influence of the insulating layer on the uniformity of the force exerted by the second conductive sheet 6 on the conductive metal, and further improving the contact reliability and electrical connection performance between the second conductive sheet 6 and the external wire.

[0051] Embodiment 7

[0052] In order to ensure the electrical connection reliability between the external wire and the circuit board. As shown in the above embodiment 1, in this embodiment, the wire terminal further comprises a third conductive sheet 9; the third conductive sheet 9 is arranged on the other side wall of the wire hole 3; the third conductive sheet 9 is arranged opposite to the second conductive sheet 6, and the third conductive sheet 9 is connected with the first conductive sheet 5. Figure 1 For example, in the implementation process, the wire terminal in this embodiment further comprises a third conductive sheet 9 made of conductive materials such as copper and copper alloy. The third conductive sheet 9 is connected on the other side wall of the wire hole 3 by welding, screwing, gluing and the like. The third conductive sheet 9 is arranged opposite to the second conductive sheet 6, and the third conductive sheet 9 is connected with the first conductive sheet 5 by welding, screwing and the like, so as to ensure the electrical conductivity between the third conductive sheet 9 and the first conductive sheet 5.

[0053]

[0054] ​When connecting an external wire, place it between the second conductive plate 6 and the third conductive plate 9. Next, operate the locking member 2 to push the second conductive plate 6 along the first conductive plate 5 toward the third conductive plate 9 until the second conductive plate 6 firmly presses the external wire against the third conductive plate 9. The connection between the third conductive plate 9 and the first conductive plate 5 provides an additional conductive path between the external wire and the circuit board, effectively ensuring the reliability of the electrical connection between the external wire and the circuit board.

[0055] Example 8

[0056] like Figure 1 As shown, when the second conductive sheet 6 presses the external wiring against the third conductive sheet 9, the third conductive sheet 9 is connected to the conductive metal of the external wiring. Therefore, to reduce the risk of electric shock caused by the third conductive sheet 9 being exposed outside the wiring hole 3, based on the above-mentioned embodiment 7, in this embodiment, the distance between the end of the third conductive sheet 9 closest to the opening of the wiring hole 3 and the bottom of the wiring hole 3 is smaller than the distance between the opening of the wiring hole 3 and the bottom of the wiring hole 3.

[0057] For example, during implementation, the distance between the end of the third conductive sheet 9 closest to the opening of the wiring hole 3 and the bottom of the wiring hole 3 is smaller than the distance between the opening of the wiring hole 3 and the bottom of the wiring hole 3. In other words, the upper end of the third conductive sheet 9 (the end closest to the opening of the wiring hole 3) is lower than the opening of the wiring hole 3, thereby effectively reducing the risk of electric shock caused by exposure of the third conductive sheet 9 outside the wiring hole 3.

[0058] When connecting external wiring, the insulation layer at one end of the external wiring is stripped off and the conductive metal at that end is clamped between the second conductive sheet 6 and the third conductive sheet 9. The insulation layer of the external wiring is positioned between the upper end of the second conductive sheet 6 and the opening of the wiring hole 3, and between the upper end of the third conductive sheet 9 and the opening of the wiring hole 3. This effectively reduces the risk of electric shock caused by the conductive metal being exposed outside the wiring hole 3. Furthermore, the conductive metal is clamped between the second conductive sheet 6 and the third conductive sheet 9, effectively reducing the effect of the insulation layer on the uniformity of the force applied to the conductive metal, thereby improving contact reliability and electrical connection performance between the external wiring.

[0059] Preferably, one end of the third conductive sheet 9 close to the opening of the wiring hole 3 corresponds to one end of the second conductive sheet 6 close to the opening of the wiring hole 3 .

[0060] While the present application has been described with reference to the numerous explanatory embodiments thereof, it is to be understood that various other modifications can be effected within the scope of the application, as described in the claims. More specifically, many variations and modifications will be apparent to those skilled in the art from the description and drawings herein, given the benefit of the description, drawings and claims as a whole. Other uses will be apparent to those skilled in the art.

Claims

1. A terminal for a circuit board, comprising a terminal base (1) provided with a terminal hole (3) and a locking member (2) provided on one side wall of the terminal hole (3), characterized in that, Also comprising: a conductive post (4) which is arranged in the bottom of the terminal hole (3) and has an end away from the terminal hole (3) for connecting to a circuit board; a first conductive sheet (5) which is arranged in the bottom of the terminal hole (3) and is connected to the end of the conductive post (4) close to the terminal hole (3); a second conductive sheet (6) which is arranged in the terminal hole (3) and is used to press an external terminal against the other side wall of the terminal hole (3); the second conductive sheet (6) is arranged on the side of the first conductive sheet (5) away from the conductive post (4) and is connected to the locking member (2); wherein the second conductive sheet (6) is used to move towards or away from the other side wall of the terminal hole (3) under the action of the locking member (2).

2. The terminal according to claim 1, wherein: a sliding groove (7) is arranged on the side of the first conductive sheet (5) away from the conductive post (4); the sliding groove (7) extends along the one side wall of the terminal hole (3) towards the other side wall of the terminal hole (3); the second conductive sheet (6) is adapted to the sliding groove (7).

3. The terminal according to claim 2, wherein: a conductive grease is filled between the second conductive sheet (6) and the sliding groove (7).

4. The terminal according to claim 2 or 3, wherein: the locking member (2) comprises a threaded rod; the threaded rod is arranged in the one side wall of the terminal hole (3) and is screwed with the one side wall of the terminal hole (3); the end of the threaded rod close to the other side wall of the terminal hole (3) is rotatably connected to the second conductive sheet (6).

5. The terminal according to claim 4, wherein: an insulating sheet (8) is arranged on the side of the second conductive sheet (6) away from the other side wall of the terminal hole (3); the insulating sheet (8) is rotatably connected to the end of the threaded rod close to the other side wall of the terminal hole (3).

6. The terminal according to claim 1, wherein: the distance between the end of the second conductive sheet (6) close to the terminal hole (3) and the bottom of the terminal hole (3) is less than the distance between the terminal hole (3) and the bottom of the terminal hole (3).

7. The terminal according to claim 1, further comprising a third conductive sheet (9); the third conductive sheet (9) is arranged on the other side wall of the terminal hole (3); the third conductive sheet (9) is arranged opposite to the second conductive sheet (6) and is connected to the first conductive sheet (5).

8. The terminal according to claim 7, wherein: ​ The distance between the third conductive sheet (9) near the one end of the hole orifice (3) and the hole bottom is less than the distance between the hole orifice (3) and the hole bottom.

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