A fuse holder

Abstract

This application relates to the technical field of fuses and discloses a fuse base, which includes a base, a first conductive piece, and a second conductive piece. The first and second conductive pieces are both mounted on the top of the base. A power-off groove is formed on the horizontal end face of the base. A threaded hole is formed on the top of the base, communicating with the inner wall of the power-off groove. A conductive post is threaded into the threaded hole. A wire-passing hole is formed on the lower inner wall of the power-off groove, and a conductive component is disposed in the wire-passing hole. The conductive component can be electrically connected to an external wire. The conductive post is electrically connected to the first conductive piece. A power-off plate made of insulating material is slidably disposed on the lower inner wall of the power-off groove. A conductive strip that enables the conductive component to be electrically connected to the conductive post is disposed on the power-off plate. A locking component is provided on the power-off plate to restrict the movement of the power-off plate. This application can reduce the time required for workers to replace the fuse body.

Description

Technical Field

[0001] This application relates to the technical field of fuses, and in particular to a fuse base. Background Technology

[0002] The fuse holder is used to fix the fuse body and connect the fuse in series to the circuit.

[0003] In related technologies, the fuse base includes a base and two conductive plates. Both conductive plates are fixed on the base and can be electrically connected to wires. When the fuse body is mounted on the conductive plates, the conductive plates are electrically connected to the fuse body, and wires can be electrically connected to the fuse body through the conductive plates.

[0004] A fuse is connected in series to a low-voltage circuit with a circuit breaker. When the fuse body is damaged and needs replacement, the circuit breaker must first be turned off to de-energize the fuse base before the fuse body can be replaced. However, in some buildings, the circuit breaker is installed far from the fuse. When workers need to replace the fuse body, they must first go to the location of the circuit breaker to turn it off, then return to the fuse location to replace the fuse body, and finally go back to the location of the circuit breaker to turn it back on. This process takes a considerable amount of time. Utility Model Content

[0005] To address the issue of the long time required for existing personnel to replace fuse bodies, this application provides a fuse base.

[0006] This application provides a fuse holder, which adopts the following technical solution: A fuse base includes a base, a first conductive sheet, and a second conductive sheet. Both the first and second conductive sheets are mounted on the top of the base. A power-off groove is formed on the horizontal end face of the base. A threaded hole communicating with the inner wall of the power-off groove is formed on the top of the base. A conductive post is threaded into the threaded hole. A wire-passing hole is formed on the lower inner wall of the power-off groove. A conductive component is disposed within the wire-passing hole. The conductive component can be electrically connected to an external electrical wire. The conductive post is electrically connected to the first conductive sheet. A power-off plate made of insulating material slides along the lower inner wall of the power-off groove. A conductive strip passes through the power-off plate, enabling electrical connection between the conductive component and the conductive post. A locking component is provided on the power-off plate to restrict its movement.

[0007] By adopting the above technical solution, when the fuse body needs to be replaced, the breaker plate is pulled away from the bottom of the breaker slot, ensuring that the conductive post and conductive component do not contact the conductive strip, thus de-energizing the conductive strip. The locking component then moves to directly above the conductive component, restricting the movement of the breaker plate. At this point, the fuse base is de-energized, allowing for safe replacement of the damaged fuse body. After the new fuse body is replaced, the breaker plate is moved closer to the bottom of the breaker slot, ensuring that the top of the conductive strip contacts the conductive post and the bottom of the conductive strip contacts the conductive component, energizing the fuse. By installing the breaker plate and conductive post on the fuse base, workers do not need to remotely shut off the power switch when replacing the fuse body, reducing the time spent on fuse replacement.

[0008] Optionally, the bottom of the power-off board is provided with an insulating groove, and the locking assembly includes an insulating block and an insulating spring disposed in the insulating groove. The insulating block can be inserted into the wire hole, and the insulating spring is located on the side of the insulating block near the bottom wall of the insulating groove. The insulating spring is in a compressed state and drives the insulating block to move away from the bottom wall of the insulating groove.

[0009] By adopting the above technical solution, the power-off plate is driven to move away from the bottom wall of the power-off groove. The power-off plate moves the insulating block together. When the insulating groove is aligned with the wire hole, the reset force of the insulating spring drives the insulating block to descend, so that the insulating block moves into the wire hole. When the end face of the insulating block away from the bottom wall of the power-off groove abuts against the inner wall of the wire hole, the insulating block is restricted from continuing to move away from the bottom wall of the insulating groove, and the power-off plate is prevented from moving completely outside the power-off groove.

[0010] Optionally, the wire-passing hole includes a square cavity and a circular cavity. The circular cavity is located on the side of the square cavity away from the power-off board. The conductive component includes a conductive spring, a first conductive block, and a second conductive block that can move along the axis of the wire-passing hole. The first conductive block is fixedly connected in the circular cavity, and the second conductive block is located in the square cavity. The second conductive block can abut against the conductive strip. The conductive spring is located between the first conductive block and the second conductive block. The conductive spring is in a compressed state and drives the second conductive block to move towards the power-off slot. The force exerted by the insulating spring on the insulating block is greater than the force exerted by the conductive spring on the second conductive block.

[0011] By adopting the above technical solution, when the fuse base switches from the energized state to the de-energized state, the insulating block moves to the top of the square cavity. Since the force exerted by the insulating spring on the insulating block is greater than the force exerted by the conductive spring on the second conductive block, the insulating block will move into the square cavity, causing the second conductive block to descend and compressing the conductive spring.

[0012] Optionally, the opening of the insulating groove is larger than the upper opening of the square cavity, and the end face of the insulating block away from the insulating spring is provided with an inclined surface. The distance from the inclined surface to the conductive strip gradually increases along the direction closer to the insulating spring. When the insulating block is inserted into the wire hole, the junction of the inner wall of the square cavity away from the opening of the power-off groove and the lower inner wall of the power-off groove abuts against the inclined surface.

[0013] By adopting the above technical solution, when the conductive strip needs to switch from a de-energized state to an energized state, the de-energizing plate is pushed towards the bottom wall of the de-energizing groove. Since the inclined surface and the inner wall of the square cavity away from the opening of the de-energizing groove abut against the lower inner wall of the de-energizing groove, the insulating block will move towards the insulating spring until the lower end face of the insulating block is coplanar with the lower inner wall of the de-energizing groove. This drives the de-energizing plate to continue moving towards the bottom wall of the de-energizing groove, so that the conductive strip moves above the first conductive block and contacts the second conductive block, allowing the conductive strip to return to the energized state.

[0014] Optionally, a limiting block is provided on the power-off plate, and a limiting groove is formed in the inner wall of the power-off groove. The limiting block extends into the limiting groove and can move along the axis of the power-off groove. A translation spring is provided on the end face of the limiting block away from the inner wall of the power-off groove. The translation spring is in a compressed state and applies a force to the limiting block in the direction close to the bottom wall of the power-off groove. When the end face of the limiting block away from the opening of the power-off groove abuts against the inner wall of the limiting groove, the conductive strip is in an energized state.

[0015] By employing the above technical solution, when the power-off plate is driven away from the bottom wall of the power-off groove, the power-off plate moves together with the limiting block, compressing the translation spring. When the power-off plate is no longer driven, the translation spring resets, causing the limiting block and the power-off plate to move together towards the bottom wall of the power-off groove until the power-off plate abuts against the bottom wall. At this point, the conductive post and the first conductive block are in contact with the conductive strip, allowing the conductive strip to automatically return to the energized state. When the conductive strip is energized, the translation spring continues to apply a square force to the limiting block towards the bottom wall of the power-off groove, making it difficult for the power-off plate to move along the power-off groove.

[0016] Optionally, the power-off board has a sliding hole on the end face near the conductive component. A fixing block that can move along the axis of the wire hole is provided in the sliding hole. One side of the fixing block can move outside the sliding hole. The fixing block is located on the side of the conductive strip away from the insulating block. When the fixing block is outside the power-off groove, the conductive strip is in a power-off state. A limiting member for restricting the movement of the fixing block is provided on the side of the fixing block.

[0017] By adopting the above technical solution, when the fixing block is located outside the power-off groove and one side of the fixing block moves to the outside of the sliding hole, the force of the translation spring reset drives the power-off plate to move towards the inner wall of the wire hole, so that the fixing block abuts against the base, thereby restricting the movement of the power-off plate, so that the conductive strip remains in the power-off state, so that the staff does not need to apply force to the power-off plate all the time.

[0018] Optionally, the limiting member includes a sliding block, and a sliding groove is provided on the inner wall of the sliding hole. The sliding block is fixedly connected to the end face of the fixed block near the sliding groove, and the sliding block is slidably disposed in the sliding groove.

[0019] By adopting the above technical solution, when the sliding block abuts against the inner walls of the vertical sides of the sliding groove, the sliding block is restricted from continuing to move, thereby restricting the fixed block from continuing to move and restricting the fixed block from moving completely outside the sliding hole.

[0020] Optionally, a screw is provided at the bottom of the first conductive sheet, and the screw is threadedly connected to the conductive post.

[0021] By adopting the above technical solution, the first conductive plate is rotated, which in turn drives the screw to rotate, so that the screw is threadedly connected to the conductive post, and the first conductive plate can be quickly installed on the base.

[0022] Optionally, a threaded post is provided on the top of the base, the threaded post penetrates the second conductive sheet, and a nut is threaded onto the threaded post. The second conductive sheet can be clamped by the cooperation of the nut and the base.

[0023] By adopting the above technical solution, the bottom of the second conductive sheet abuts against the base, and the threaded post penetrates the second conductive sheet. The nut on the threaded post is tightened so that the nut abuts against the second conductive sheet. Through the cooperation between the nut and the base, the second conductive sheet can be quickly fixed on the base.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. When replacing the fuse body, pull the breaker plate away from the bottom of the circuit breaker slot, ensuring that the conductive post and conductive component are not in contact with the conductive strip, thus de-energizing the conductive strip. Move the locking component directly above the conductive component, restricting the movement of the breaker plate. At this point, the fuse base is de-energized, allowing for safe replacement of the damaged fuse body. After replacing the fuse body, move the breaker plate closer to the bottom of the circuit breaker slot, ensuring that the top of the conductive strip contacts the conductive post and the bottom of the conductive strip contacts the conductive component, energizing the fuse. By incorporating the breaker plate and conductive post on the fuse base, workers do not need to remotely shut off the power switch when replacing the fuse body, reducing the time spent on fuse replacement. 2. The limit block and the power-off plate are moved together towards the bottom wall of the power-off slot by the translation spring to prevent the conductive strip from switching from the power-on state to the power-off state due to accidental vibration. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of the fuse base; Figure 2 This is a front view of the fuse holder; Figure 3 It is along Figure 2 A cross-sectional view along line AA in the middle.

[0027] Reference numerals: 1. Base; 2. Power-off plate; 21. Conductive post; 22. Limiting block; 23. Translation spring; 24. Limiting groove; 25. Power-off groove; 26. Conductive strip; 27. Threaded hole; 3. First conductive piece; 31. Screw; 4. Conductive assembly; 41. First conductive block; 42. Conductive spring; 43. Second conductive block; 44. Circular cavity; 45. Square cavity; 46. Wire hole; 5. Locking assembly; 51. Insulating spring; 52. Insulating groove; 53. Insulating block; 54. Inclined surface; 6. Limiting element; 61. Fixing block; 62. Sliding hole; 63. Sliding groove; 64. Sliding block; 7. Second conductive piece; 71. Threaded post; 72. Nut. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0029] This embodiment discloses a fuse holder. (Refer to...) Figure 1 and Figure 2 A fuse base includes a base 1, a first conductive piece 3, and a second conductive piece 7. The first conductive piece 3 and the second conductive piece 7 are both mounted on the top of the base 1, and the fuse body can be mounted on the first conductive piece 3 and the second conductive piece 7.

[0030] Reference Figure 2 and Figure 3 The base 1 has a threaded hole 27 at the top, and a conductive post 21 is connected to the threaded hole 27 by an internal thread. The conductive post 21 has an engagement hole at the top. A screw 31 is fixedly connected to the lower end face of the first conductive sheet 3, and the screw 31 is threaded into the engagement hole.

[0031] Reference Figure 2 and Figure 3 A threaded post 71 is fixedly connected to the top of the base 1. A round hole is opened at the bottom of the second conductive sheet 7. The threaded post 71 passes through the round hole. A nut 72 is threadedly connected to the threaded post 71. The nut 72 abuts against the upper end face of the second conductive sheet 7.

[0032] Reference Figure 2 and Figure 3 A power-off groove 25 is formed on one end face of the base 1 along its width direction. The upper inner wall of the power-off groove 25 communicates with the threaded hole 27. A wire-passing hole 46 is formed on the lower inner wall of the power-off groove 25, located directly below the threaded hole 27. The wire-passing hole 46 includes a square cavity 45 and a circular cavity 44. The square cavity 45 is located on the side of the circular cavity 44 closest to the threaded hole 27. The opening shape of the square cavity 45 is square, and the opening shape of the circular cavity 44 is circular.

[0033] Reference Figure 2 and Figure 3 A conductive component 4 is disposed within the square cavity 45. The conductive component 4 includes a conductive spring 42 disposed within the square cavity 45, a second conductive block 43 disposed within the square cavity 45, and a first conductive block 41 disposed within the circular cavity 44. The first conductive block 41 is threadedly connected to the circular cavity 44 and can be electrically connected to an electrical wire. The second conductive block 43 is movable along the axial direction of the wire hole 46.

[0034] Reference Figure 2 and Figure 3 The conductive spring 42 is located between the first conductive block 41 and the second conductive block 43. One side of the conductive spring 42 abuts against the first conductive block 41, and the other side of the conductive spring 42 abuts against the second conductive block 43. The conductive spring 42 is in a compressed state and applies a force to the second conductive block 43 in the direction of approaching the conductive post 21.

[0035] Reference Figure 2 and Figure 3 A power-off plate 2 is slidably mounted on the lower inner wall of the power-off groove 25. The power-off plate 2 is in contact with the upper inner wall of the power-off groove 25 and can move along the axis of the power-off groove 25. A handle is fixedly connected to the end of the power-off plate 2 away from the bottom wall of the power-off groove 25. The power-off plate 2 is made of insulating material. A power-off plate 2, which is adapted to the shape of the power-off groove 25, is inserted inside the power-off groove 25. The lower end face of the power-off plate 2 is slidably connected to the lower end face of the power-off groove 25, and the power-off plate 2 can move outside the power-off groove 25 along the axis of the power-off groove 25.

[0036] Reference Figure 2 and Figure 3A limiting groove 24 is formed on the inner wall of the power-off groove 25. The limiting groove 24 is elongated and its length direction is consistent with the axial direction of the power-off groove 25. A limiting block 22 is fixedly connected to the end face of the power-off plate 2 near the limiting groove 24. The limiting block 22 is slidably disposed within the limiting groove 24. When the limiting block 22 abuts against the inner wall of the limiting groove 24 near the bottom wall of the power-off groove 25, the power-off plate 2 is completely located within the power-off groove 25. In other embodiments, the limiting groove 24 can be formed on any horizontal inner wall of the power-off groove 25, or the limiting groove 24 can be formed on the lower inner wall of the power-off groove 25.

[0037] Reference Figure 2 and Figure 3 A translation spring 23 is provided inside the limiting groove 24. The translation spring 23 is located on the side of the limiting block 22 near the opening of the power-off groove 25. The translation spring 23 is in a compressed state. The side of the translation spring 23 away from the limiting block 22 abuts against the limiting block 22, and the side of the translation spring 23 away from the limiting block 22 abuts against the inner wall of the limiting groove 24 near the opening of the power-off groove 25. The translation spring 23 applies a force to the limiting block 22 in a direction away from the opening of the power-off groove 25.

[0038] Reference Figure 2 and Figure 3 The top of the power-off board 2 has a through hole. A conductive strip 26 is inserted through the through hole, and the outer circumferential surface of the conductive strip 26 is fixedly connected to the inner wall of the through hole. When the upper end face of the conductive strip 26 contacts the conductive post 21, the lower end face of the conductive strip 26 contacts the first conductive block 41.

[0039] Reference Figure 2 and Figure 3 When the conductive strip 26 is energized, its upper end face contacts the conductive post 21, and its lower end face contacts the first conductive block 41. At this time, the limiting block 22 and the inner wall of the limiting groove 24 away from the opening of the power-off groove 25 abut against each other. When the conductive strip 26 is de-energized, neither the conductive post 21 nor the first conductive block 41 contacts the conductive strip 26, and the insulating block 53 is located inside the wire hole 46.

[0040] Reference Figure 2 and Figure 3 A locking component 5 is provided inside the power-off plate 2, which restricts the movement of the power-off plate 2 along the axis of the power-off groove 25. The locking component 5 is located on the side of the conductive strip 26 near the bottom wall of the power-off groove 25, and includes an insulating spring 51 and an insulating block 53. An insulating groove 52 is formed at the bottom of the power-off plate 2. The opening of the insulating groove 52 is larger than the opening of the square cavity 45, and the opening of the insulating groove 52 is rectangular. Both the insulating spring 51 and the insulating block 53 are located inside the insulating groove 52.

[0041] Reference Figure 2 and Figure 3An insulating spring 51 is located between the insulating block 53 and the bottom wall of the insulating groove 52. One side of the insulating spring 51 abuts against the bottom wall of the insulating groove 52, and the other side of the insulating spring 51 abuts against the insulating block 53. The insulating spring 51 is in a compressed state, and the insulating spring 51 applies a force to the insulating block 53 in the direction of approaching the second conductive block 43.

[0042] Reference Figure 2 and Figure 3 An inclined surface 54 is provided on the end face of the insulating block 53 away from the insulating spring 51. The distance from the inclined surface 54 to the conductive strip 26 gradually increases in the direction close to the insulating spring 51. An angle is provided at the junction of the inner wall of the square cavity 45 away from the opening of the power-off groove 25 and the lower inner wall of the power-off groove 25. When the conductive strip 26 is in the de-energized state, the inclined surface 54 is in contact with the angle.

[0043] Reference Figure 2 and Figure 3 A sliding hole 62 is provided through the bottom of the power-off board 2. A sliding groove 63 is formed on the inner wall of the sliding hole 62 near the conductive strip 26, and a fixing block 61 is slidably disposed in the sliding hole 62. A limiting member 6 is fixedly connected to the end face of the fixing block 61 near the sliding groove 63. The limiting member 6 includes a sliding block 64. The sliding block 64 is inserted into the sliding groove 63. When the sliding block 64 contacts the vertical inner wall of the sliding groove 63, the fixing block 61 is located outside the sliding hole 62. When the conductive strip 26 is energized, the fixing block 61 is located outside the base 1 and one end of the fixing block 61 extends out of the sliding hole 62.

[0044] The implementation principle of a fuse base in this application embodiment is as follows: When the fuse body needs to be replaced, the breaker plate 2 is pulled away from the bottom wall of the breaker groove 25. The breaker plate 2 drives the limit block 22 to move. The limit block 22 drives the translation spring 23 to compress, so that the conductive strip 26 no longer contacts the first conductive block 41, until the insulating groove 52 is aligned with the wire hole 46. At this time, the insulating block 53 abuts against the second conductive block 43. Since the force exerted by the insulating spring 51 on the insulating block 53 is greater than the force exerted by the conductive spring 42 on the second conductive block 43, the insulating block 53 moves into the wire hole 46 under the drive of the insulating spring 51, until the inclined surface 54 contacts the oblique angle, restricting the movement of the breaker plate 2. At this time, the conductive strip 26 is in a de-energized state, and the damaged fuse body is removed from the first conductive piece 3 and the second conductive piece 7.

[0045] After the new fuse body is installed on the first conductive piece 3 and the second conductive piece 7, the circuit breaker plate 2 is released. The translation spring 23 resets, causing the limiting block 22 to move towards the bottom wall of the circuit breaker groove 25, which in turn moves the circuit breaker plate 2. This causes the insulating block 53 to leave the wire hole 46 and retract back into the insulating groove 52. During the process of the insulating block 53 leaving the square cavity 45, the conductive spring 42 drives the second conductive block 43 to move towards the circuit breaker plate 2. When the conductive strip 26 moves to the top of the wire hole 46, the first conductive block 41 abuts against the conductive strip 26, and at the same time, the conductive strip 26 contacts the conductive post 21. At this time, the fuse base is switched to the energized state.

[0046] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," "third," and similar terms used in this application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including" and similar terms mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including" and their equivalents, and do not exclude other elements or objects. "Above," "below," "left," "right," etc., are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0047] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the design concept of this application should be included within the protection scope of this application.

Claims

1. A fuse base, comprising a base (1), a first conductive sheet (3), and a second conductive sheet (7), wherein the first conductive sheet (3) and the second conductive sheet (7) are both mounted on the top of the base (1), characterized in that: The base (1) has a power-off groove (25) on one horizontal end face. The base (1) has a threaded hole (27) on the top that connects to the inner wall of the power-off groove (25). A conductive post (21) is threaded into the threaded hole (27). A wire hole (46) is provided on the lower inner wall of the power-off groove (25). A conductive component (4) is provided in the wire hole (46). The conductive component (4) can be electrically connected to an external wire. The conductive post (21) is electrically connected to the first conductive sheet (3). A power-off plate (2) made of insulating material is slidably provided on the lower inner wall of the power-off groove (25). A conductive strip (26) that can realize the electrical connection between the conductive component (4) and the conductive post (21) is provided on the power-off plate (2). A locking component (5) is provided on the power-off plate (2) to restrict the movement of the power-off plate (2).

2. A fuse holder according to claim 1, characterized in that: The power cut-off board (2) has an insulating groove (52) at the bottom. The locking component (5) includes an insulating block (53) and an insulating spring (51) disposed in the insulating groove (52). The insulating block (53) can be inserted into the wire hole (46). The insulating spring (51) is located on the side of the insulating block (53) close to the bottom wall of the insulating groove (52). The insulating spring (51) is in a compressed state. The insulating spring (51) drives the insulating block (53) to move away from the bottom wall of the insulating groove (52).

3. A fuse holder according to claim 2, characterized in that: The wire hole (46) includes a square cavity (45) and a circular cavity (44). The circular cavity (44) is located on the side of the square cavity (45) away from the power-off plate (2). The conductive component (4) includes a conductive spring (42), a first conductive block (41), and a second conductive block (43) that can move along the axis of the wire hole (46). The first conductive block (41) is fixedly connected in the circular cavity (44). The second conductive block (43) is located in the square cavity (45). The second conductive block (43) can abut against the conductive strip (26). The conductive spring (42) is located between the first conductive block (41) and the second conductive block (43). The conductive spring (42) is in a compressed state. The conductive spring (42) drives the second conductive block (43) to move towards the power-off groove (25). The force exerted by the insulating spring (51) on the insulating block (53) is greater than the force exerted by the conductive spring (42) on the second conductive block (43).

4. A fuse holder according to claim 3, characterized in that: The opening of the insulating groove (52) is larger than the upper opening of the square cavity (45). The end face of the insulating block (53) away from the insulating spring (51) is provided with an inclined surface (54). The distance from the inclined surface (54) to the conductive strip (26) gradually increases in the direction close to the insulating spring (51). When the insulating block (53) is inserted into the wire hole (46), the inner wall of the square cavity (45) away from the opening of the power-off groove (25) and the lower inner wall of the power-off groove (25) abut against the inclined surface (54).

5. A fuse holder according to claim 1, characterized in that: The power-off plate (2) is provided with a limiting block (22), and the inner wall of the power-off groove (25) is provided with a limiting groove (24). The limiting block (22) extends into the limiting groove (24) and can move along the axis of the power-off groove (25). The end face of the limiting block (22) away from the inner wall of the power-off groove (25) is provided with a translation spring (23). The translation spring (23) is in a compressed state. The translation spring (23) applies a force to the limiting block (22) in the direction close to the bottom wall of the power-off groove (25). When the end face of the limiting block (22) away from the opening of the power-off groove (25) abuts against the inner wall of the limiting groove (24), the conductive strip (26) is in a powered state.

6. A fuse holder according to claim 5, characterized in that: The power-off board (2) has a sliding hole (62) on the end face near the conductive component (4). A fixing block (61) that can move along the axis of the wire hole (46) is provided in the sliding hole (62). One side of the fixing block (61) can move outside the sliding hole (62). The fixing block (61) is located on the side of the conductive strip (26) away from the insulating block (53). When the fixing block (61) is outside the power-off groove (25), the conductive strip (26) is in a power-off state. A limiting member (6) for restricting the movement of the fixing block (61) is provided on the side of the fixing block (61).

7. A fuse holder according to claim 6, characterized in that: The limiting member (6) includes a sliding block (64), and a sliding groove (63) is provided on the inner wall of the sliding hole (62). The sliding block (64) is fixedly connected to the end face of the fixed block (61) near the sliding groove (63), and the sliding block (64) is slidably disposed in the sliding groove (63).

8. A fuse holder according to claim 1, characterized in that: The bottom of the first conductive sheet (3) is provided with a screw (31), which is threadedly connected to the conductive post (21).

9. A fuse holder according to claim 1, characterized in that: The base (1) is provided with a threaded post (71) at the top. The threaded post (71) passes through the second conductive sheet (7). A nut (72) is threaded onto the threaded post (71). The second conductive sheet (7) can be clamped by the cooperation between the nut (72) and the base (1).

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