Fuse

Abstract

The utility model discloses a fuse which comprises a shell, a fusible core support, a fusible core, a first conductive clamp and a second conductive clamp, and the fusible core is arranged on the fusible core support. The fusible core bracket is provided with a handle part which is always positioned outside the shell, and the fusible core bracket is provided with a first position for connecting the fusible core with the first conductive clamp and the second conductive clamp and a second position for replacing the fusible core; wherein an opening is formed in the upper portion of the shell, a first sliding groove is formed in the shell in the height direction of the shell, and the upper end of the first sliding groove is a closed end; the fusible core support is provided with a first sliding block extending into the first sliding groove, and the fusible core support is switched between the first position and the second position through sliding fit of the first sliding block and the first sliding groove. A mounting channel is formed in the shell, the first end of the mounting channel is communicated with one groove wall of the first sliding groove, the second end of the mounting channel is located at the opening and communicated with the exterior of the shell, and the size of the mounting channel is matched with the first sliding block to allow the first sliding block to pass through; the fusible core support provided by the utility model can realize the characteristic of afterloading.

Description

Technical Field

[0001] The utility model relates to a fuse. Background Art

[0002] At present, the vast majority of fuses on the market adopt a handle-rotating structure to facilitate the replacement of the fuse core.

[0003] As the structure disclosed in CN220569629U, the fuse core support is rotatably connected to the shell. The fuse core support has a first state located inside the shell (which can also be said to be the connection position of the fuse core), and a second state in which a part is located outside the shell after rotation (which can also be said to be the replacement position for replacing the fuse core).

[0004] However, for the existing rotary fuse, since a rotary connection between the fuse core support and the shell needs to be achieved, and the shell needs to be fixed by riveting (the two half-shells need to be riveted first), in this case, the fuse core support must be pre-installed inside the shell to ensure the normal installation of the fuse core support.

[0005] Therefore, the above-mentioned rotary fuse cannot achieve the post-installation of the fuse core support (the so-called post-installation means that the fuse core support is installed after the two half-shells have been riveted). Summary of the Invention

[0006] In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art, and aims to provide a fuse that can achieve the post-installation of the fuse core support.

[0007] The utility model provides a fuse, which includes a shell, a fuse core support, a fuse core, a first conductive clip and a second conductive clip. The fuse core is arranged on the fuse core support; the fuse core support has a handle part that is always outside the shell. The fuse core support has a first position where the fuse core is connected to the first conductive clip and the second conductive clip, and a second position where the fuse core can be replaced; wherein, an opening is provided above the shell, and a first sliding groove is arranged inside the shell along the height direction of the shell. The upper end of the first sliding groove is a closed end; a first sliding block extending into the first sliding groove is arranged on the fuse core support, and the fuse core support is changed between the first position and the second position through the sliding cooperation between the first sliding block and the first sliding groove; an installation channel is opened inside the shell. The first end of the installation channel communicates with a groove wall of the first sliding groove, and the second end of the installation channel is located at the opening and communicates with the outside of the shell. The size of the installation channel is adapted to the first sliding block to allow the first sliding block to pass through.

[0008] With this structure, the fuse core support is changed to a sliding setting. Through the sliding fit between the first slider and the first chute, the fuse core support can be transformed between the first position and the second position, enabling the replacement and installation of the fuse core. Through the setting of the installation channel, the first slider can be loaded into the housing from outside the housing, realizing the afterloading of the fuse core support. Since the first chute is arranged along the height direction, when the user normally pulls the fuse core support, the first slider is not easily inserted into the connection between the installation channel and the first chute. Therefore, the fuse core support can also normally transform between the first position and the second position. At the same time, since the upper end of the first chute is a closed end, the fuse core support after being installed in the housing will not completely separate from the housing, and it can also prevent the user from causing the fuse core support to completely separate from the housing due to excessive force.

[0009] In some embodiments of the present application, there is an included angle between the sliding direction of the first slider along the installation channel and the sliding direction of the first slider along the first chute, and the included angle is an acute angle.

[0010] With this entry direction of the acute included angle of the first slider, it can be ensured that the fuse core support is easier to install.

[0011] In some embodiments of the present application, the size of the installation channel at the opening is larger than the size of the rest of the installation channel.

[0012] Adopting this structure is beneficial for the first slider to enter the first chute and is beneficial for afterloading.

[0013] In some embodiments of the present application, the shape of the installation channel is arc-shaped or / and linear.

[0014] There are many shapes of this installation channel. It can be arc-shaped, linear, or a combination of arc and line.

[0015] In some embodiments of the present application, the shape of the installation channel is a single-segment arc, and the tangent at any point of the single-segment arc forms an included angle with the length direction of the first chute, and the included angle is an acute angle.

[0016] In some embodiments of the present application, the shape of the installation channel is at least two connected arcs, and the tangent at any point of any arc forms an included angle with the length direction of the first chute, and the included angle is an acute angle.

[0017] In some embodiments of the present application, the shape of the installation channel is linear, and the linear shape forms an included angle with the length direction of the first chute, and the included angle is an acute angle.

[0018] In some embodiments of the present application, the shape of the installation channel is a combined shape of a straight line and an arc, wherein the straight-line part is arranged at a first angle with the length direction of the first chute, the first angle is an acute angle, and the tangent line at any point of the arc part is arranged at a second angle with the length direction of the first chute, and the second angle is an acute angle.

[0019] Regardless of the shape of the installation channel described above, such arc-shaped, straight-line-shaped, and composite-shaped structures are conducive to the first slider entering the first chute and also conducive to the assembly of the first slider.

[0020] In some embodiments of the present application, the first slider includes a width dimension d and a height dimension c, the width dimension d is smaller than the height dimension c, the groove width of the first chute is adapted to the width dimension d so that the first slider can slide along the first chute, and the dimensions at each part of the installation channel are at least not less than the height dimension c.

[0021] Adopting such a structure, such a dimension design will be conducive to the assembly of the first slider.

[0022] In some embodiments of the present application, the housing is provided with a first rib, a second rib, and a third rib protruding from the inner wall of the housing. The first chute is jointly formed by the first rib, the second rib, and the third rib. The third rib forms the closed end of the first chute, and the position where the installation channel communicates with the first chute is located on the second rib or between the second rib and the third rib.

[0023] Adopting such a structure, the design of the first rib, the second rib, and the third rib will be conducive to the formation of the first chute.

[0024] In some embodiments of the present application, the housing includes a first half-shell and a second half-shell. The first half-shell and the second half-shell are both provided with a first chute and an installation channel, and the fuse core bracket is provided with a first slider corresponding to the first chute in terms of quantity and position.

[0025] Adopting such a structure can improve the installation stability between the fuse core bracket and the housing.

[0026] In some embodiments of the present application, a second chute is further provided in the housing, and the second chute is also arranged along the height direction of the housing. The fuse core bracket is provided with a second slider extending into the second chute; the upper end of the second chute is an open part, and the open part communicates with the opening.

[0027] Adopting such a structure will be conducive to the sliding stability between the fuse core bracket and the housing.

[0028] In some embodiments of the present application, the shell includes a first half shell and a second half shell, both of which are provided with a second slide groove and an installation channel, and the fuse holder is provided with second sliders whose number and position correspond to the second slide groove.

[0029] By adopting this structure, the installation stability between the fuse support and the shell can be improved.

[0030] In some embodiments of the present application, the width of the open portion is greater than the width of the remaining positions of the second slide groove, so that the second sliding block can enter the second slide groove easily.

[0031] This structure can be used to facilitate the installation between the fuse support and the shell.

[0032] In some embodiments of the present application, the height position of the opening portion is higher than the height position of the connection point between the installation channel and the first sliding groove.

[0033] This structure will also facilitate the installation between the fuse holder and the shell.

[0034] In some embodiments of the present application, when the first sliding block moves to the opening between the installation channel and the first sliding groove, the second sliding block is located in the narrow portion.

[0035] In this way, by the second sliding block being in the narrow portion, the first sliding block can be restricted to a certain extent, thereby preventing the first sliding block from escaping from the first sliding groove through the opening.

[0036] In some embodiments of the present application, the shell is provided with a first rib and a second rib protruding from the inner wall of the shell, and the second sliding groove is composed of the first rib and the second rib.

[0037] Adopting this structure will be beneficial to the forming of the second chute.

[0038] In some embodiments of the present application, a fuse mounting portion is provided on the fuse holder, the first slider and the second slider are located below the fuse mounting portion in the height direction of the fuse holder, and the handle is located above the fuse mounting portion in the height direction of the fuse holder.

[0039] The adoption of this structure is more conducive to the design of the first slider and the second slider, and is also conducive to the assembly between the first slider, the second slider and the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show certain embodiments of the present utility model, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0041] Figure 1 Shows a schematic diagram of the fuse in the embodiment of the present utility model;

[0042] Figure 2 Shows a schematic diagram of the fuse in the embodiment of the present utility model after removing the second half shell (the fuse core support is in the first position);

[0043] Figure 3 Shows a schematic diagram of the fuse in the embodiment of the present utility model after removing the second half shell (the fuse core support is in the second position);

[0044] Figure 4 Shows a schematic diagram of the fuse core support in the fuse in the embodiment of the present utility model;

[0045] Figure 5 Shows a schematic diagram of the first half shell in the fuse in the embodiment of the present utility model;

[0046] Figure 6 Shows a cross-sectional view of the first half shell, the first slider, and the second slider in the fuse in the embodiment of the present utility model;

[0047] Figure 7 Shows a positional relationship diagram of the first half shell and the first slider when the fuse core support is installed later (when initially installed) in the embodiment of the present utility model;

[0048] Figure 8 Shows a positional relationship diagram of the first half shell and the first slider when the fuse core support is installed later (when the first slider is about to reach the first chute) in the embodiment of the present utility model;

[0049] Figure 9 Shows a positional relationship diagram of the first half shell and the first slider when the fuse core support is installed later (when the first slider is already sliding in the first chute) in the embodiment of the present utility model;

[0050] Figure 10 Shows a schematic diagram of one shape of the installation channel in the embodiment of the present utility model;

[0051] Figure 11 Shows a schematic diagram of another shape of the installation channel in the embodiment of the present utility model;

[0052] Figure 12 Shows a schematic diagram of yet another shape of the installation channel in the embodiment of the present utility model;

[0053] Figure 13 The figure shows a schematic diagram of another shape of the installation channel according to an embodiment of the present utility model. Detailed implementation manners

[0054] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0055] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0056] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0057] In the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0058] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature. Embodiment

[0059] As Figures 1-13 shown, an embodiment of the present utility model is a fuse, which includes a housing 100, a fuse core 200, a fuse core support 300, a first terminal, a second terminal 500, a first conductive clip 600, and a second conductive clip 700.

[0060] Here, the first terminal, the second terminal 500, the first conductive clip 600, and the second conductive clip 700 are inside the housing 100. The fuse core 200 is fixed on the fuse core support 300, and the fuse core support 300 is slidably engaged with the housing 100. By sliding the fuse core support 300, the fuse core support 300 can be switched between a first position F1 and a second position F2. The first position F1 is a position where the fuse core 200 is in electrical connection with the first conductive clip 600 and the second conductive clip 700, and the second position F2 is a position convenient for replacing the fuse core 200.

[0061] Here, the housing 100 has a hexahedron structure and is composed of two half-housings 100, namely a first half-shell 101 and a second half-shell 102. The first half-shell 101 and the second half-shell 102 are fixed by riveting. Of course, in addition to riveting, the two can also be fixed by screws, snap fasteners, or a combination of snap fasteners and riveting, as long as they can be stably engaged.

[0062] Here, the fuse core support 300 is slidably arranged with the housing 100. Since the sliding structures of the first half-shell 101, the second half-shell 102 and the fuse core support 300 are basically the same, the sliding structure of the first half-shell 101 and the fuse core support 300 will be described in detail below. The structure of the second half-shell 102 can refer to that of the first half-shell 101.

[0063] An opening 100a is provided on the first half shell 101 (the opening 100a here is where the fuse core support 300 can move to the second position F2 through the opening 100a). A first sliding groove 1010 is provided on the inner wall of the first half shell 101. The first sliding groove 1010 is arranged along the height direction of the first half shell 101. Here, the upper end (i.e., the end) of the first sliding groove 1010 is closed.

[0064] The fuse core support 300 is provided with a first slider 300c. The first slider 300c extends into the first sliding groove 1010. The first slider 300c can slide along the first sliding groove 1010. In this way, through the sliding fit between the first slider 300c and the first sliding groove 1010, the fuse core support 300 can be transformed between the first position F1 and the second position F2.

[0065] In order to facilitate the post-installation of the first slider 300c (that is, after the first half shell 101 and the second half shell 102 are fixed, the fuse core support 300 can still be installed into the housing 100), an installation channel 1020 is opened on the first half shell 101. The two ends of the installation channel 1020 are respectively a first end 1021 and a second end 1022. The first end 1021 here is communicated with a groove wall of the first sliding groove 1010. The second end 1022 here is located at the opening 100a and is communicated with the outside of the first half shell 101. The size of the installation channel 1020 is adapted to the first slider 300c to allow the first slider 300c to pass through. That is to say, when post-installation is to be realized, the slider can pass through the second end 1022 and enter the first sliding groove 1010.

[0066] Here, the first slider 300c includes dimensions in at least two directions, namely a width dimension d and a height dimension c. The width dimension d here is smaller than the height dimension c. The groove width of the first sliding groove 1010 is adapted to the width dimension d, so that the first slider 300c can slide along the first sliding groove 1010. The size of any part of the installation channel 1020 is at least not less than the height dimension c, so that the first slider 300c can enter the installation channel 1020. It is worth mentioning that the size of the installation channel 1020 at the opening 100a (that is, the size of the second end 1022) is larger than the size of the other positions of the installation channel 1020, which is more conducive to the entry of the first slider 300c.

[0067] For the installation channel 1020, there is an angle between the sliding direction of the first slider 300c along the installation channel 1020 and the sliding direction of the first slider 300c along the first slide groove 1010, and the angle is acute, which will facilitate the first slider 300c to slide into the first slide groove 1010. In simple terms, the fuse holder 300 is inserted into the housing 100 at an inclined angle during installation. There are many specific shapes of the installation channel 1020 that realizes this insertion method, which can be an arc, a straight line, a combination of multiple arcs, or a combination of an arc and a straight line.

[0068] like Figure 10 As shown, as a method, the shape of the installation channel 1020 is a single arc, or a single arc, where the tangent of the single arc close to the connecting position is set at an angle A with the length direction of the first slide groove 1010, and the angle A is an acute angle.

[0069] like Figure 11 As shown, as another way, the shape of the installation channel 1020 is two connected arcs, including an arc with a larger curvature and an arc with a smaller curvature, and the arc with a smaller curvature is connected to the first slide groove 1010. Here, the tangent of the part of the arc with a larger curvature close to the arc with a smaller curvature is set at an angle A with the length direction of the first slide groove 1010, and the angle A is an acute angle.

[0070] Of course, the example here shows two arcs, but more than two arcs can also be used.

[0071] like Figure 12 As shown, as another way, the shape of the installation channel 1020 is a straight line, and the straight line is set at an angle A with the length direction of the first slide groove 1010, and the angle A is an acute angle.

[0072] like Figure 13 As shown, as another way, the shape of the installation channel 1020 is a composite shape of a straight line and an arc, wherein the straight line portion is set at a first angle A1 with the length direction of the first slide groove 1010, and the first angle A1 is an acute angle, and the tangent of any point of the arc portion is set at a second angle A2 with the length direction of the first slide groove 1010, and the second angle A2 is an acute angle.

[0073] No matter which shape of the installation channel 1020 is adopted, as long as there is an intersection between the installation channel 1020 and the first slide groove 1010, so that the first slider 300c can smoothly enter the first slide groove 1010, and it is not easy to cause the first slider 300c to detach from the first slide groove 1010 from the connection between the first slide groove 1010 and the installation channel 1020.

[0074] The first slide groove 1010 is formed by the first rib 1010a, the second rib 1010b and the third rib 1010c. Specifically, the third rib 1010c forms the closed end of the first slide groove 1010, and the opening position of the installation channel 1020 with the first slide groove 1010 is located between the second rib 1010b and the third rib 1010c. Of course, in addition to this, the opening position of the installation channel 1020 with the first slide groove 1010 can also be opened on the second rib 1010b.

[0075] A second slide groove 1030 is also provided on the first half shell 101, and the second slide groove 1030 is also provided along the height direction of the shell 100. The fuse support 300 has a second slider 300d, which extends into the second slide groove 1030, and the second slider 300d can slide along the second slide groove 1030. That is to say, when the fuse support 300 slides, the first slider 300c is along the first slide groove 1010, and the second slider 300d is along the second slide groove 1030, so that the movement can be more stable through the two sets of sliders and slide grooves.

[0076] Here, the second chute 1030 includes two parts, one part is an open part 1030a, and the other part is a narrow part 1030b. The open part 1030a here is connected with the opening 100a, so that the second slider 300d can completely enter the second chute 1030 through the open part 1030a. The narrow part 1030b here refers to the width size that matches the second slider 300d, and the second slider 300d can just slide along it. Here, the size of the open part 1030a is larger than the size of the rest of the second chute 1030, so that the second slider 300d can enter the second chute 1030. The shape of the open part 1030a here is a trumpet shape. Of course, in addition to the trumpet shape, it can also be a V-shaped, U-shaped, etc., as long as it is conducive to the entry of the second slider 300d.

[0077] From the perspective of height position, the height position of the opening portion 1030a is H, and the height position of the connection between the installation channel 1020 and the first slide groove 1010 is h. H is higher than h. The purpose of this is to facilitate the first slider 300c to enter the first slide groove 1010 through the installation channel 1020.

[0078] At the same time, when the fuse holder 300 moves to the second position F2, when the first slider 300c moves to the connection point S100 between the installation channel 1020 and the first slide groove 1010, the second slider 300d is just in the narrow portion 1030b. In this way, through the action of the second slider 300d and the narrow portion 1030b, the first slider 300c can be restricted to a certain extent to prevent the first slider 300c from escaping from the first slide groove 1010 through the connection point.

[0079] The second sliding groove 1030 here is jointly formed by the first rib 1031 and the second rib 1032, that is, the inner wall of the first half shell 101 has the protruding first rib 1031 and the second rib 1032, and the two ribs are arranged at intervals to form the second sliding groove 1030.

[0080] For the fuse core bracket 300, it includes a handle part 300a, a fuse core installation part 300b, and the above-mentioned first slider 300c and second slider 300d. In terms of the position in the height direction of the fuse core bracket 300, the handle part 300a is higher than the fuse core installation part 300b, and the fuse core installation part 300b is higher than the first slider 300c and the second slider 300d. When the fuse core bracket 300 is installed later, the first slider 300c and the second slider 300d can be respectively aligned with the installation channel 1020 and the open part 1030a, and the fuse core bracket 300 is pushed in until the first slider 300c and the second slider 300d completely enter the first sliding groove 1010 and the second sliding groove 1030 and reach the first position F1. When the user needs to replace the fuse core 200, the fuse core bracket 300 is pulled through the handle part 300a located outside the housing 100, so that the fuse core bracket 300 moves to the second position F2, and the user can replace the fuse core 200.

[0081] Since the structure of the second half shell 102 is similar to that of the first half shell 101, it will not be repeated here.

[0082] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0083] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A fuse, comprising a housing, a fuse holder, a fuse, a first conductive clip and a second conductive clip, wherein the fuse is arranged on the fuse holder; the fuse holder has a handle portion which is always outside the housing; the fuse holder has a first position which connects the fuse to the first conductive clip and the second conductive clip, and a second position which allows the fuse to be replaced; characterized in that: The shell has an opening at the top, and a first slide groove is arranged along the height direction of the shell in the shell, and the upper end of the first slide groove is a closed end; the fuse holder is provided with a first slider extending into the first slide groove, and the fuse holder is transformed between the first position and the second position through the sliding cooperation between the first slider and the first slide groove; an installation channel is opened in the shell, and the first end of the installation channel is connected with a groove wall of the first slide groove, and the second end of the installation channel is located at the opening and communicated with the outside of the shell, and the size of the installation channel is adapted to the first slider to allow the first slider to pass through.

2. A fuse according to claim 1, characterized in that: There is an angle between a sliding direction of the first sliding block along the installation channel and a sliding direction of the first sliding block along the first sliding groove, and the angle is an acute angle.

3. A fuse according to claim 2, characterized in that: The shape of the installation channel is arc-shaped or / and straight-line-shaped.

4. A fuse according to claim 1, characterized in that: The first slider includes a width dimension d and a height dimension c, the width dimension d is smaller than the height dimension c, the width of the first slide groove is adapted to the width dimension d so that the first slider can slide against the first slide groove, and the dimensions of each part of the installation channel are at least not smaller than the height dimension c; And / or, the size of the installation channel at the opening is larger than the size of the installation channel at other positions.

5. A fuse according to claim 1, characterized in that: The shell is provided with a first rib, a second rib and a third rib protruding from the inner wall of the shell, the first slide groove is composed of the first rib, the second rib and the third rib, the third rib forms the closed end of the first slide groove, and the opening position of the installation channel and the first slide groove is located on the second rib or between the second rib and the third rib.

6. A fuse according to any one of claims 1 to 5, characterized in that: The shell comprises a first half shell and a second half shell, both of which are provided with a first slide groove and a mounting channel, and the fuse support is provided with first sliders whose number and position correspond to the first slide groove.

7. A fuse according to any one of claims 1 to 5, characterized in that: A second slide groove is also provided in the shell, and the second slide groove is also arranged along the height direction of the shell. A second slider extending into the second slide groove is provided on the fuse support; the second slide groove includes an open part and a narrow part, the open part is connected to the opening, and the narrow part is adapted to the width of the second slider.

8. A fuse according to claim 7, characterized in that: The shell comprises a first half shell and a second half shell, both of which are provided with a second slide groove and a mounting channel, and the fuse support is provided with second sliders whose number and position correspond to the second slide grooves.

9. A fuse according to claim 7, characterized in that: The width of the opening is greater than the width of the remaining positions of the second slide groove, so that the second sliding block can enter the second slide groove easily.

10. A fuse according to claim 7, characterized in that: The height position of the opening portion is higher than the height position of the connection between the installation channel and the first chute; and / or, when the first slider moves to the opening of the installation channel and the first slide groove, the second slider is in the narrow portion; And / or, the shell is provided with a first rib and a second rib protruding from the inner wall of the shell, and the second slide groove is composed of the first rib and the second rib; And / or, a fuse mounting portion is provided on the fuse holder, the first slider and the second slider are located below the fuse mounting portion in the height direction of the fuse holder, and the handle is located above the fuse mounting portion in the height direction of the fuse holder.

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