CN212461593U

CN212461593U - Plug-in fuse

Info

Publication number: CN212461593U
Application number: CN202021588007.7U
Authority: CN
Inventors: 黄志付; 魏开红; 陶瑞汉
Original assignee: Wenzhou Mairui Electric Co ltd
Current assignee: Wenzhou Mairui Electric Co ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2021-02-02
Anticipated expiration: 2030-08-04

Abstract

The utility model relates to the technical field of fuses, in particular to an insert fuse, which comprises a base and an insert matched with the base, wherein two first locking threaded holes are arranged on the upper end surface of the base, and first locking bolts are arranged in the first locking threaded holes; the side surface of the first locking bolt is provided with a first connecting hole for an external lead to be connected; the left side wall and the right side wall of the base are provided with through holes for external leads to pass through; the left side wall and the right side wall of the base are fixedly provided with dust covers through screws, and the upper end face of the plug-in is provided with a second locking threaded hole corresponding to the position of the first locking bolt; a second locking bolt is arranged in the second locking threaded hole; the side surface of the second locking bolt is provided with a second connecting hole for connecting the melt; the up end of plug-in components is provided with the overlap joint copper sheet through the second locking bolt is fixed, the utility model provides a but simple structure quick replacement fuse-element just is difficult for taking place the plug-in fuse that the dust gathered.

Description

Plug-in fuse

Technical Field

The utility model relates to a fuse technical field, concretely relates to plug-in fuse.

Background

The fuse is an electric appliance which fuses a melt by heat generated by itself to open a circuit when a current exceeds a predetermined value. The fuse melts the melt by the heat generated by the fuse after the current exceeds a specified value for a period of time, so that the circuit is disconnected. The plug-in fuse is also called a ceramic plug-in fuse, and refers to a fuse in which a fuse link is inserted into a base by a conductive plug-in.

Because the fuse-element often can take place the fusing, need follow and trade, and current plug-in fuse generally has seted up the wiring hole at the both ends of base, and power supply ware electric current inserts the fuse, takes place the phenomenon that the dust gathered even short circuit very easily, consequently, but a quick replacement fuse-element just is difficult for taking place the plug-in fuse that the dust gathered.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides an insert fuse to solve the technical problems.

In order to achieve the above object, the utility model provides a following technical scheme: an insertion type fuse comprises a base and an insertion piece matched with the base, wherein two first locking threaded holes are formed in the upper end face of the base, and first locking bolts are arranged in the first locking threaded holes in a threaded mode; a first connecting hole for an external lead to be connected is formed in the side surface of the first locking bolt; through holes for external leads to pass through are formed in the left side wall and the right side wall of the base; the left side wall and the right side wall of the base are fixedly provided with dust covers through screws, and the dust covers are made of silicon rubber materials; the dustproof cover is in a horn shape; a second locking threaded hole is formed in the position, corresponding to the first locking bolt, of the upper end face of the plug-in piece; a second locking bolt is arranged in the second locking threaded hole; the side surface of the second locking bolt is provided with a second connecting hole for connecting the melt; and the upper end surface of the plug-in is fixedly provided with a lap copper sheet through the second locking bolt, and the lap copper sheet is mutually clamped with the first locking bolt.

Furthermore, a safety groove is formed in the middle of the upper end face of the base.

Furthermore, a positioning column is integrally arranged at the position, corresponding to the safety groove, of the upper end face of the plug-in component, and a containing groove for containing the melt is formed in the upper end face of the positioning column.

Furthermore, a first fixing threaded hole for fixing the base on a wall is formed in the bottom of the safety groove.

Furthermore, a second fixing threaded hole is formed in the upper end of the base, and a third fixing threaded hole is formed in the position, corresponding to the second fixing threaded hole, of the upper end of the plug-in unit.

Furthermore, the first locking bolt and the second locking bolt are made of conductive copper materials.

Furthermore, the base and the plug-in are both made of insulating ceramic materials.

Compared with the prior art, the beneficial effects of the utility model are that:

when the protective device is used, the base can be fixed on a wall through the first fixing threaded hole, a lead of an electric appliance to be protected is inserted into the first connecting port, and the first locking bolt is locked; then, inserting the melt into the two second connecting holes, locking a second locking bolt to complete the fixing work of the melt, aligning the positioning column with the safety groove, covering the plug-in unit on the base, and completing the fixing of the base and the plug-in unit by using the bolt to penetrate through the second fixing threaded hole and the third fixing threaded hole; the utility model has simple structure, and the disassembly and replacement of the melt can be completed only by using the screwdriver; the dust cover can effectively prevent dust accumulation and static electricity and even short circuit.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a front sectional view of a base in the present invention;

FIG. 2 is a front cross-sectional view of the interposer of the present invention;

fig. 3 is a top view of the interposer of the present invention;

fig. 4 is a side view of the interposer of the present invention.

In the figure: 1. a base; 2. a safety groove; 3. a first fixing threaded hole; 4. a first locking threaded hole; 5. a first locking bolt; 6. a first connection hole; 7. a through hole; 8. a second fixing threaded hole; 9. a screw; 10. a dust cover; 11. a plug-in; 12. a positioning column; 13. accommodating grooves; 14. a second locking threaded hole; 15. a second locking bolt; 16. a second connection hole; 17. a third fixing threaded hole; 18. and (4) overlapping the copper sheets.

Detailed Description

In order to make the objects and technical solutions of the present invention clear and fully described, and the advantages thereof more clearly understood, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of some, but not all, embodiments of the present invention and are not to be considered as limiting, and that all other embodiments can be made by one of ordinary skill in the art without any inventive work.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply 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 limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. It will be apparent, however, to one skilled in the art that the embodiments may be practiced without these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.

Example one

Referring to fig. 1-4, the present invention provides the following technical solutions: an insert fuse comprises a base 1 and an insert 11 matched with the base 1, wherein two first locking threaded holes 4 are formed in the upper end face of the base 1, and first locking bolts 5 are arranged in the first locking threaded holes 4 in a threaded manner; a first connecting hole 6 for an external lead to be connected is formed in the side surface of the first locking bolt 5; the left side wall and the right side wall of the base 1 are provided with through holes 7 for external leads to pass through; the left side wall and the right side wall of the base 1 are fixedly provided with dust covers 10 through screws 9, the dust covers 10 are made of silicon rubber materials, and the silicon rubber has good high temperature resistance and insulation performance; the dust cover 10 is horn-shaped; the dust cover 10 covers the outer side of the through hole 7; a second locking threaded hole 14 is formed in the position, corresponding to the first locking bolt 5, of the upper end surface of the plug-in 11; a second locking bolt 15 is arranged in the second locking threaded hole 14; the side surface of the second locking bolt 15 is provided with a second connecting hole 16 for connecting the melt; the upper end face of the plug-in 11 is fixedly provided with an overlap copper sheet 18 through a second locking bolt 15, the overlap copper sheet 18 is mutually clamped with the first locking bolt 5, the upper end of the overlap copper sheet 18 is longitudinally provided with two inward-inclined sheet bodies, and therefore the first locking bolt 5 can be clamped by means of the two sheet bodies to realize the electric connection between the base 1 and the plug-in 11.

According to the above embodiment, referring to fig. 1, a safety groove 2 is formed in the middle of the upper end surface of the base 1.

According to the above embodiment, specifically, please refer to fig. 1, fig. 2 and fig. 3, the upper end surface of the plug-in 11 is integrally provided with the positioning column 12 corresponding to the position of the safety groove 2, the positioning column 12 is arranged to ensure the accurate butt joint between the plug-in 11 and the base 1, the upper end surface of the positioning column 12 is provided with the accommodating groove 13 for placing the melt, an independent space is formed between the positioning column 12 and the safety groove 2, when the melt is fused, it can be ensured that other parts do not generate higher temperature, and the safety is higher.

According to the above embodiment, referring to fig. 1, a first fixing threaded hole 3 for fixing the base 1 on the wall is formed at the bottom of the safety groove 2, so that the base 1 can be conveniently fixed with the wall surface.

According to the above embodiment, specifically, referring to fig. 1, the upper end of the base 1 is provided with a second fixing threaded hole 8, and the upper end of the plug-in 11 is provided with a third fixing threaded hole 17 corresponding to the second fixing threaded hole 8, so as to facilitate the fixing between the base 1 and the plug-in 11.

According to the above embodiments, specifically, referring to fig. 1 to 4, the first locking bolt 5 and the second locking bolt 15 are made of conductive copper materials, so as to facilitate electrical conduction between the first locking bolt 5 and the second locking bolt 15 and the lap copper sheet 18.

According to the above embodiments, specifically, referring to fig. 1 and fig. 2, the base 1 and the plug 11 are both made of insulating ceramic materials, and the base 1 and the plug 11 prevent electric leakage, it is stated that in order to facilitate the arrangement of threaded holes on the base 1 and the plug 11 in production, a circular hole may be formed, and then a cylinder with an internal thread is embedded in the circular hole.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An insert fuse comprising a base (1) and an insert (11) cooperating with the base (1), characterized in that: two first locking threaded holes (4) are formed in the upper end face of the base (1), and first locking bolts (5) are arranged in the first locking threaded holes (4) in an internal thread mode; a first connecting hole (6) for an external lead to be connected into is formed in the side surface of the first locking bolt (5); through holes (7) for external leads to pass through are formed in the left side wall and the right side wall of the base (1); the left side wall and the right side wall of the base (1) are fixedly provided with dust covers (10) through screws (9), and the dust covers (10) are made of silicon rubber materials; the dust cover (10) is in a horn shape; a second locking threaded hole (14) is formed in the position, corresponding to the first locking bolt (5), of the upper end face of the plug-in (11); a second locking bolt (15) is arranged in the second locking threaded hole (14) in a threaded manner; a second connecting hole (16) for connecting the melt is formed in the side surface of the second locking bolt (15); the upper end face of the plug-in (11) is fixedly provided with an overlap copper sheet (18) through the second locking bolt (15), and the overlap copper sheet (18) is mutually clamped with the first locking bolt (5).

2. An insert fuse as recited in claim 1, wherein: a safety groove (2) is formed in the middle of the upper end face of the base (1).

3. An insert fuse as recited in claim 2, wherein: the upper end face of the plug-in (11) corresponds to the position of the safety groove (2) and is integrally provided with a positioning column (12), and the upper end face of the positioning column (12) is provided with a containing groove (13) for placing melt.

4. An insert fuse as recited in claim 2, wherein: the bottom of the safety groove (2) is provided with a first fixing threaded hole (3) for fixing the base (1) on a wall.

5. An insert fuse as recited in claim 1, wherein: the upper end of the base (1) is provided with a second fixing threaded hole (8), and the upper end of the plug-in (11) is provided with a third fixing threaded hole (17) at a position corresponding to the second fixing threaded hole (8).

6. An insert fuse as recited in claim 1, wherein: the first locking bolt (5) and the second locking bolt (15) are made of conductive copper materials.

7. An insert fuse as recited in claim 1, wherein: the base (1) and the plug-in (11) are both made of insulating ceramic materials.