Fuse convenient to install

Abstract

The utility model relates to a fuse convenient to install, and relates to the technical field of fuses, the fuse convenient to install comprises a shell and a control assembly located in the shell, a locking notch is formed in the bottom side face of the shell, and a left locking groove and a right locking groove are formed in the two opposite side walls of the locking notch respectively; a guide inclined surface is arranged on the opening edge, close to the left locking groove, of the locking notch, and a chamfer surface is arranged on the inner edge, close to the bottom side of the shell, of the right locking groove; a plurality of locking protruding blocks are fixedly arranged on the bottom side face of the locking notch, and locking inclined faces parallel to the chamfering faces are arranged on the locking protruding blocks. According to the fuse, due to the arrangement of the locking convex block, the unoccupied gap of the edge of the guide rail located in the right locking groove is reduced, the possibility of relative looseness is further reduced, and the installation stability of the fuse on the guide rail is improved.

Description

Technical Field

[0001] The present application relates to the technical field of fuses, and in particular to a fuse that is easy to install. Background Art

[0002] In current power systems, fuses, as key circuit protection components, are widely used in various electrical devices. Their operating principle is that a fuse or other fusible material quickly melts when a current overload occurs, effectively disconnecting the circuit and ensuring circuit safety. When installing a fuse, the guide rail is typically first securely mounted inside the electrical cabinet, and then the base of the fuse is secured to the rail.

[0003] Reference Figure 1 A fuse includes a fuse body 4 having a limit slot 41 at its bottom. The inner walls of this limit slot 41 are respectively provided with a left positioning slot 42 and a right positioning slot 43. The edge of the fuse body 4, adjacent to the left positioning slot 42, is meticulously crafted into a guide surface 44. During installation, one side of the guide rail first smoothly snaps into the right positioning slot 43. Subsequently, the other side, leveraging the guide rail's own elastic deformation, is squeezed and deformed along the guide surface 44. After the deformation is restored, the fuse body securely snaps into the left positioning slot 42, completing the installation.

[0004] However, in practice, this installation mechanism faced a technical challenge: to ensure that the left end of the guide rail could smoothly contact the guide surface and undergo the necessary extrusion deformation, the guide rail needed to be tilted at a large angle during the initial installation. This requirement directly led to the need to enlarge the opening of the right positioning slot and adopt a larger angle to accommodate the installation process. Unfortunately, this design adjustment weakened the retaining effect of the fuse body near the right end of the guide rail, making it prone to shaking on the guide rail when subjected to external forces, affecting its stability and reliability. Utility Model Content

[0005] The purpose of the present application is to provide a fuse that is easy to install, so as to solve the problem in the above-mentioned related art that the fuse is unstable to install and is easy to become loose when installed on the guide rail.

[0006] The present application provides a fuse that is easy to install and adopts the following technical solution:

[0007] A fuse that is easy to install includes a shell and a control assembly located within the shell, a locking notch being provided on the bottom side surface of the shell, a left locking groove and a right locking groove being provided on opposite side walls of the locking notch, respectively; a guiding inclined surface being provided on an opening edge of the locking notch near the left locking groove, and a chamfered surface being provided on an inner edge of the right locking groove near the bottom side of the shell; a plurality of locking protrusions being fixedly provided on the bottom side surface of the locking notch, and a locking inclined surface being provided on the locking protrusions and being parallel to the chamfered surface.

[0008] By adopting the above technical solution, when the fuse is being installed, one side edge of the guide rail is first tilted along the chamfered surface and inserted into the right locking groove, and then the other side edge of the guide rail is compressed and deformed along the guide inclined surface and inserted into the left locking groove, and then the deformation is restored to complete the installation of the fuse on the guide rail; in this process, due to the setting of the locking protrusion, the free space after the guide rail edge is in the right locking groove is reduced, thereby reducing the possibility of relative looseness and improving the installation stability of the fuse on the guide rail.

[0009] Optionally, a guiding slope is provided on the side edge of the locking protrusion facing the right locking slot opening.

[0010] By adopting the above technical solution, when one side edge of the guide rail is inserted into the right locking groove, it can be more conveniently inserted into the right locking groove along the guiding slope, thereby improving the installation efficiency of fixing the fuse on the guide rail.

[0011] Optionally, an elastic pressing pad is fixed on the bottom side wall of the right locking groove.

[0012] By adopting the above technical solution, when one side edge of the guide rail is inserted into the right locking groove, the edge of the guide rail can be pressed against the elastic pressing pad, thereby further improving the installation stability of the fuse on the guide rail.

[0013] Optionally, a locking plug is fixed on the elastic pressing pad, and a locking slot for the locking plug to be inserted is formed on the bottom side wall of the right locking groove of the shell.

[0014] By adopting the above technical solution, during the installation process of the elastic pressing pad, the locking plug is simultaneously embedded into the corresponding locking slot, thereby enhancing the installation stability of the elastic pressing pad.

[0015] Optionally, anti-slip grooves are provided on the side surfaces of the elastic pressing pad.

[0016] By adopting the above technical solution, the edge of the guide rail inserted into the right locking groove can be pressed against the anti-slip grooves on the elastic pressing pad, thereby enhancing the contact stability between the edge of the guide rail and the elastic pressing pad.

[0017] Optionally, a reinforcing rib is fixedly provided in the middle of the elastic pressing pad, and the length direction of the reinforcing rib is parallel to the length direction of the elastic pressing pad.

[0018] By adopting the above technical solution, reinforcing ribs are provided inside the elastic pressing pad, thereby improving the structural strength of the elastic pressing pad and extending the service life of the elastic pressing pad.

[0019] Optionally, both ends of the reinforcing rib are fixed with bent strips extending to the outside of the elastic pressing pad, and the shell is provided with a positioning slot for inserting the bent strip on the bottom side wall of the right locking groove.

[0020] By adopting the above technical solution, bent inserts are fixedly provided at both ends of the reinforcing ribs, so during the installation process of the elastic pressing pad, the bent inserts can be inserted into the positioning slots, thereby improving the installation stability of the elastic pressing pad.

[0021] Optionally, a positioning block is fixedly provided on the outer periphery of the bent insert, and a positioning slot for the positioning block to be embedded is opened on the inner wall of the positioning slot.

[0022] By adopting the above technical solution, after the bending insert is inserted into the positioning slot, force is applied to the bending insert so that the positioning block is interference fit into the positioning slot, thereby further improving the installation stability of the bending insert.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Due to the setting of the locking protrusion, the free space after the edge of the guide rail is in the right locking groove is reduced, thereby reducing the possibility of relative looseness and improving the installation stability of the fuse on the guide rail; when one side edge of the guide rail is inserted into the right locking groove, it can be more conveniently inserted into the right locking groove along the guiding inclined surface, thereby improving the installation efficiency of fixing the fuse on the guide rail.

[0025] 2. Reinforcing ribs are provided inside the elastic pressing pad to improve the structural strength of the elastic pressing pad and extend the service life of the elastic pressing pad; during the installation of the elastic pressing pad, the bent insert can be inserted into the positioning slot to improve the installation stability of the elastic pressing pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] Figure 1 It is a structural diagram embodying background technology;

[0028] Figure 2 This is a schematic diagram of the overall structure of Example 1 of the present application;

[0029] Figure 3 This is a partial structural diagram of Example 1 of the present application;

[0030] Figure 4 yes Figure 3 A magnified schematic diagram of part A;

[0031] Figure 5 This is a partial structural diagram of Example 2 of the present application;

[0032] Figure 6 yes Figure 5 An enlarged schematic diagram of part B;

[0033] Figure 7 This is a schematic diagram of the structure of the embodiment of the present application showing the installation and cooperation of the locking plug on the elastic pressing pad;

[0034] Figure 8 This is a partial cross-sectional structural diagram of an embodiment of the present application showing the installation and cooperation of an elastic abutting pad;

[0035] Figure 9 yes Figure 8 Enlarged schematic diagram of part C.

[0036] In the figure, 1. shell; 11. locking notch; 111. guide slope; 12. left locking groove; 13. right locking groove; 131. chamfered surface; 14. locking protrusion; 141. locking slope; 142. guide slope; 15. locking slot; 16. positioning slot; 161. positioning slot; 2. elastic pressing pad; 21. anti-slip groove; 22. locking plug; 3. reinforcing rib; 31. bent insert; 311. positioning block; 4. fuse body; 41. limit slot; 42. left positioning slot; 43. right positioning slot; 44. guide surface. DETAILED DESCRIPTION

[0037] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0038] Example 1:

[0039] Reference Figure 2 , a fuse that is easy to install, includes a shell 1 and a control component located in the shell 1; wherein the shell 1 is made of plastic, and the shell 1 includes a left half shell and a right half shell that are mutually clamped and fastened by screws, and the control component is a conventional electrical component, which will not be repeated here.

[0040] Reference Figure 3 A locking notch 11 is provided on the bottom side of the housing 1, and a left locking groove 12 and a right locking groove 13 are respectively provided on the two opposite side walls of the locking notch 11; a guiding inclined surface 111 is provided on the opening edge of the locking notch 11 near the left locking groove 12, and a chamfered surface 131 is provided on the inner edge of the right locking groove 13 near the bottom side of the housing 1;

[0041] When the fuse is being installed, one side edge of the guide rail is first tilted along the chamfered surface 131 and snapped into the right locking groove 13, and then the other side edge of the guide rail is compressed and deformed along the guide inclined surface 111 and snapped into the left locking groove 12, and then recovers its deformation.

[0042] Reference Figure 3 and Figure 4 Two locking protrusions 14 are integrally injection-molded on the bottom side of the locking notch 11, wherein the locking protrusions 14 are provided with locking inclined surfaces 141 parallel to the chamfered surfaces 131; the locking protrusions 14 limit and tighten the edge of the guide rail inserted into the right locking groove 13, causing the edge of the guide rail to be slightly deformed and reducing the free space after the edge of the guide rail is in the right locking groove 13, thereby reducing the possibility of relative looseness and improving the installation stability of the fuse on the guide rail;

[0043] A guiding slope 142 is provided on the side edge of the locking protrusion 14 facing the right locking groove 13 ; when one side edge of the guide rail is inserted into the right locking groove 13 , it can be more conveniently inserted into the right locking groove 13 along the guiding slope 142 .

[0044] The implementation principle of the embodiment of this application is:

[0045] When one side edge of the guide rail is inserted into the right locking groove 13, the one side edge of the guide rail is first inserted into the right locking groove 13 along the chamfered surface 131 and the guide slope 142, and the guide rail edge inserted into the right locking groove 13 is limited and tightened by the locking protrusion 14, thereby reducing the free space after the guide rail edge is in the right locking groove 13.

[0046] Example 2:

[0047] Reference Figure 5 and Figure 6 The difference between the embodiment of the present application and embodiment 1 is that an elastic pressing pad 2 made of rubber is fixed on the bottom side wall of the right locking groove 13, and an anti-slip groove 21 is provided on the side of the elastic pressing pad 2; when one side edge of the guide rail is inserted into the right locking groove 13, the edge of the guide rail can be pressed against the anti-slip groove 21 on the elastic pressing pad 2.

[0048] Reference Figure 7 and Figure 8 A locking plug 22 made of rubber is integrally injection-molded on the elastic pressing pad 2, wherein the housing 1 is provided with a locking slot 15 on the bottom side wall of the right locking groove for the locking plug 22 to be embedded in; thereby achieving the initial fixation of the elastic pressing pad 2.

[0049] Reference Figure 8 and Figure 9A metal reinforcing rib 3 is fixed to the middle of the elastic abutting pad 2, wherein the length direction of the reinforcing rib 3 is parallel to the length direction of the elastic abutting pad 2; both ends of the reinforcing rib 3 are integrally formed with bent inserts 31 extending to the outside of the elastic abutting pad 2, and the housing 1 is provided with a positioning slot 16 for inserting the bent insert 31 on the bottom side wall of the right locking groove;

[0050] A positioning block 311 is integrally formed on the outer periphery of the bent insert 31. The outer side surface of the positioning block 311 is an arc surface, and the arc length corresponding to the cross section of the arc surface is a minor arc. A positioning slot 161 is provided on the inner wall of the positioning slot 16 for the positioning block 311 to be embedded in. The structural strength of the elastic pressing pad 2 is improved by strengthening the rib 3, and the bent insert 31 can be inserted into the interior of the positioning slot 16 to improve the installation stability of the elastic pressing pad 2.

[0051] Unless otherwise defined, the terms or scientific terms used in this application should have the usual meanings understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "A" or "one" and other similar words do not indicate a quantity limit, but rather indicate the existence of at least one. "Include" or "comprising" and other similar words mean that the elements or objects appearing before "include" or "comprising" cover the elements or objects listed after "include" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0052] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A fuse that is easy to install, comprising a housing (1) and a control assembly located in the housing (1), wherein a locking notch (11) is provided on the bottom side of the housing (1), and a left locking groove (12) and a right locking groove (13) are respectively provided on two opposite side walls of the locking notch (11); The locking notch (11) is provided with a guide slope (111) on the opening edge close to the left locking groove (12), and the right locking groove (13) is provided with a chamfered surface (131) on the inner edge close to the bottom side of the shell (1); it is characterized in that, A plurality of locking protrusions (14) are fixedly provided on the bottom side of the locking notch (11), and a locking inclined surface (141) parallel to the chamfered surface (131) is provided on the locking protrusion (14).

2. A fuse that is easy to install according to claim 1, characterized in that: A guiding slope (142) is provided on the side edge of the locking protrusion (14) facing the opening of the right locking groove (13).

3. The fuse that is easy to install according to claim 1, characterized in that: An elastic pressing pad (2) is fixedly provided on the bottom side wall of the right locking groove (13).

4. A fuse that is easy to install according to claim 3, characterized in that: A locking plug (22) is fixedly provided on the elastic pressing pad (2), and a locking slot (15) for the locking plug (22) to be inserted is provided on the bottom side wall of the right locking groove of the housing (1).

5. The fuse that is easy to install according to claim 3, characterized in that: Anti-slip grooves (21) are provided on the side surfaces of the elastic pressing pad (2).

6. The fuse that is easy to install according to claim 3, characterized in that: A reinforcing rib (3) is fixedly provided in the middle of the elastic abutting pad (2), and the length direction of the reinforcing rib (3) is parallel to the length direction of the elastic abutting pad (2).

7. The fuse that is easy to install according to claim 6, characterized in that: The two ends of the reinforcing rib (3) are fixed with bent inserts (31) extending to the outside of the elastic pressing pad (2), and the housing (1) is provided with a positioning slot (16) for inserting the bent insert (31) on the bottom side wall of the right locking groove.

8. The fuse that is easy to install according to claim 7, characterized in that: A positioning block (311) is fixedly provided on the outer periphery of the bent insert strip (31), and a positioning slot (161) for the positioning block (311) to be embedded is provided on the inner wall of the positioning slot (16).

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