CN216980488U

CN216980488U - Current-limiting fuse for switch cabinet

Info

Publication number: CN216980488U
Application number: CN202220902433.6U
Authority: CN
Inventors: 邵校; 许春松; 方德良
Original assignee: Yangzhou Ruineng Electrical Appliance Equipment Co ltd
Current assignee: Yangzhou Ruineng Electrical Appliance Equipment Co ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-07-15
Anticipated expiration: 2032-04-19

Abstract

The utility model discloses a current-limiting fuse for a switch cabinet, which comprises a mounting base, a base and a fuse tube, wherein two groups of rod-shaped insulating supports are mounted at the top of the base, porcelain sleeves are fixedly mounted at the tops of the two groups of rod-shaped insulating supports through screws, two ends of the fuse tube are respectively clamped on the inner walls of the two groups of porcelain sleeves, and a connecting component is arranged between the top of the mounting base and the base. This practicality sets up coupling assembling between mounting base and base, can drive locking cover rectilinear movement through the threaded rod, makes the locking piece block in the inside of locking cover, carries on spacingly to the base through the connection between locking cover and the locking piece, has realized being connected between base and the mounting base, has increased the joint strength between locking cover and the locking piece through elastic component's setting simultaneously to the steadiness of being connected between base and the mounting base has been improved.

Description

Current-limiting fuse for switch cabinet

Technical Field

The utility model relates to the technical field of fuses, in particular to a current-limiting fuse for a switch cabinet.

Background

The current-limiting fuse is a fuse capable of safely cutting off all possible currents within the rated current cutting and current limiting range, limits the fusing time under rated voltage to be equal to or less than the first main current wave or symmetrical current wave period, and simultaneously limits the passing current to be less than the peak current;

current current limiting fuse is mostly when using in the cubical switchboard passes through multiunit screw snap-on with the base in the cabinet, but this kind of method is comparatively inconvenient when dismantling and installing current limiting fuse is whole, if need maintain whole or need load and unload the screw repeatedly when changing the part, improved user's work burden.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a current-limiting fuse for a switch cabinet, which detachably connects a base and a mounting base through a connecting component and an auxiliary component, thereby simplifying the mounting structure of the base and solving the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

a current-limiting fuse for a switch cabinet comprises a mounting base, a base and a fuse tube, wherein two groups of rod-shaped insulating supports are mounted at the top of the base, porcelain sleeves are fixedly mounted at the tops of the two groups of rod-shaped insulating supports through screws, and two ends of the fuse tube are clamped on the inner walls of the two groups of porcelain sleeves respectively;

a mounting foot is integrally formed on the side wall of the mounting base, a threaded hole is formed in the surface of the mounting foot, and a connecting assembly is arranged between the top of the mounting base and the base;

coupling assembling includes fixing base, locking cover, threaded rod, locking piece and elastic component, mounting base's top integrated into one piece has the fixing base, the threaded rod runs through in the surface of fixing base and extends to the another side of fixing base, just be threaded connection between threaded rod and the fixing base, the one end welding of threaded rod has the knob, the other end of threaded rod rotates the surface of connecting in the locking cover, the lateral wall integrated into one piece of base has the locking piece, the locking piece block is in the inside of locking cover, just the inside of locking cover is provided with elastic component, be provided with auxiliary assembly between base and the mounting base.

Preferably, elastic component includes locking spring, connection arch and push pedal, the inner wall of locking cover and the surperficial integrated into one piece of push pedal have the connection arch, locking spring's both ends are cup jointed respectively in two sets of bellied outer walls of connecting, just locking spring's outer wall laminating is in the inner wall of locking cover, the push pedal contacts with the locking piece.

Preferably, the holding tank has been seted up on the surface of locking piece, the inner wall of holding tank rotates and is connected with three sets of cylinders, and three sets the cylinder equidistance distributes, three sets the cylinder all contacts with the inner wall of locking cover.

Preferably, still be provided with auxiliary assembly between base and the mounting base, auxiliary assembly is including distributing in locking cover both sides and with the rotation seat of mounting base rigid coupling, two sets of the surface that rotates the seat is rotated and is connected with the linking arm, and is two sets of be equipped with the locking depression bar of being connected with it rotation between the linking arm, locking depression bar compresses tightly through the retaining member the base.

Preferably, the locking member comprises an extension spring connected between the locking compression rod and the mounting base, the non-free end of the extension spring is movably connected with the mounting base through a base lifting lug fixed on the mounting base, and the free end of the extension spring is detachably connected with the locking compression rod through a compression rod lifting lug fixed on the locking compression rod.

Preferably, the top of the mounting base is integrally formed with two groups of folding edges, the base is clamped on the inner walls of the two groups of folding edges, and the top of the mounting base is in contact with the bottom of the base.

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

1. the connecting assembly is arranged between the mounting base and the base, the locking cover can be driven to move linearly through the threaded rod, the locking block is clamped inside the locking cover, the base is limited through the connection between the locking cover and the locking block, the connection between the base and the mounting base is realized, and meanwhile, the connecting strength between the locking cover and the locking block is increased through the arrangement of the elastic assembly, so that the stability of the connection between the base and the mounting base is improved;

2. this practicality sets up auxiliary assembly between mounting base and base, can drive the locking depression bar through the linking arm and rotate, make the locking depression bar play fixedly to the base, spacing effect, extension spring and depression bar lug can stimulate the locking depression bar simultaneously, make the locking depression bar hug closely in the surface of base, it is not hard up to prevent to appear between shelves pole and the base, and then auxiliary assembly fixes base and mounting base jointly, need not to load and unload the screw repeatedly when comparing the loading and unloading base with traditional structure, user's work burden has been reduced.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is an enlarged view of region A of FIG. 1;

FIG. 3 is a schematic view of the connection structure of the locking cover and the locking block of the present invention;

fig. 4 is a schematic view of the main structure of the locking block of the present invention.

In the figure: 1. folding edges; 2. mounting a base; 3. a fixed seat; 4. a locking cover; 5. mounting a foot; 6. locking the pressure lever; 7. a base; 8. a rod-shaped insulating support; 9. a porcelain bushing; 10. a melt pipe; 11. a connecting arm; 12. a pressure lever lifting lug; 13. an extension spring; 14. a rotating seat; 15. a locking spring; 16. a threaded rod; 17. a connecting projection; 18. pushing the plate; 19. a locking block; 20. accommodating grooves; 21. and (3) a roller.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution:

a current-limiting fuse for a switch cabinet comprises a mounting base 2, a base 7 and a fuse tube 10;

two groups of rod-shaped insulating struts 8 are installed at the top of the base 7, porcelain sleeves 9 are fixedly installed at the tops of the two groups of rod-shaped insulating struts 8 through screws, and two ends of a fuse tube 10 are respectively clamped on the inner walls of the two groups of porcelain sleeves 9;

a mounting foot 5 is integrally formed on the side wall of the mounting base 2, a threaded hole is formed in the surface of the mounting foot 5, and a connecting assembly is arranged between the top of the mounting base 2 and a base 7;

the connecting component comprises a fixed seat 3, a locking cover 4, a threaded rod 16, a locking block 19 and an elastic component, the fixed seat 3 is integrally formed at the top of the mounting base 2, the threaded rod 16 penetrates through the surface of the fixed seat 3 and extends to the other surface of the fixed seat 3, and the threaded rod 16 is in threaded connection with the fixed seat 3, one end of the threaded rod 16 is welded with a knob, the other end of the threaded rod 16 is rotatably connected with the surface of the locking cover 4, the side wall of the base 7 is integrally formed with a locking block 19, the locking block 19 is clamped inside the locking cover 4, and an elastic component is arranged inside the locking cover 4, the detachable installation between the base 7 and the installation base 2 is realized through the arrangement of the connecting component, the installation pins 5 can facilitate the installation of the installation base 2 in the switch cabinet, and only the base 7 and the installation base 2 need to be separated during disassembly;

the top of the mounting base 2 is integrally formed with two groups of folding edges 1, the base 7 is clamped on the inner walls of the two groups of folding edges 1, the top of the mounting base 2 is in contact with the bottom of the base 7, and the folding edges 1 can accommodate the base 7 at the top of the mounting base 2, so that the base 7 is guided and positioned;

the surface of the locking block 19 is provided with an accommodating groove 20, the inner wall of the accommodating groove 20 is rotatably connected with three groups of rollers 21, the three groups of rollers 21 are distributed at equal intervals, the three groups of rollers 21 are all contacted with the inner wall of the locking cover 4, when the locking cover 4 moves on the surface of the locking block 19, the rollers 21 are driven to rotate in the accommodating groove 20, and the rollers 21 are contacted with the inner wall of the locking cover 4, so that the rollers 21 at two sides of the locking block 19 can be just clamped in the locking cover 4, gaps between the locking block 19 and the locking cover 4 are prevented, and the rollers 21 can play a role of reducing friction when rotating, so that the locking cover 4 and the locking block 19 can move more smoothly;

as a technical optimization scheme of the utility model, the elastic component comprises a locking spring 15, connecting bulges 17 and a push plate 18, the connecting bulges 17 are integrally formed on the inner wall of the locking cover 4 and the surface of the push plate 18, the two ends of the locking spring 15 are respectively sleeved on the outer walls of the two groups of connecting bulges 17, the outer wall of the locking spring 15 is attached to the inner wall of the locking cover 4, the push plate 18 is in contact with a locking block 19, after the locking cover 4 covers the surface of the locking block 19, the locking block 19 can extrude the push plate 18 in the locking cover 4, the push plate 18 can compress the locking spring 15 after being extruded, at the moment, the locking spring 15 can increase the friction between the push plate 18 and the locking block 19 through the self elasticity, and thus the effect of increasing the connecting strength between the locking block 19 and the locking cover 4 is achieved;

as a technical optimization scheme of the utility model, an auxiliary assembly is further arranged between the base 7 and the mounting base 2 and comprises rotating seats 14, connecting arms 11, locking compression rods 6 and compression rod lifting lugs 12, the auxiliary assembly comprises the rotating seats 14 which are distributed on two sides of the locking cover 4 and fixedly connected with the mounting base 2, the surfaces of the two groups of rotating seats 14 are rotatably connected with the connecting arms 11, the locking compression rods 6 which are rotatably connected with the two groups of connecting arms 11 are arranged between the two groups of connecting arms 11, the locking compression rods 6 tightly press the base 7 through locking parts, the locking compression rods 6 can rotate on the surfaces of the rotating seats 14 through the connecting arms 11, at the moment, the two groups of connecting arms 11 can drive the locking compression rods 6 to rotate, so that the locking compression rods 6 are attached to the surface of the base 7, and the connection between the base 7 and the mounting base 2 is assisted in limiting;

the locking part comprises an extension spring 13 connected between a locking pressure rod 6 and a mounting base 2, the non-free end of the extension spring 13 is movably connected with the mounting base 2 through a base lifting lug fixed on the mounting base 2, the free end of the extension spring 13 is detachably connected with the locking pressure rod 6 through a pressure rod lifting lug 12 fixed on the locking pressure rod 6, the extension spring 13 is fixedly connected with the mounting base 2, after the base 7 is mounted on the surface of the mounting base 2, the top end of the extension spring 13 is connected with the pressure rod lifting lug 12 through a hook, at the moment, the extension spring 13 is in an extension state, the locking pressure rod 6 is pulled to be attached to the surface of the base 7 through the elasticity of the extension spring 13, so that the base 7 is locked, and because the bottom of the extension spring 13 is movably connected with the mounting base 2, the top end of the extension spring 13 can be separated from the pressure rod lifting lug 12 when the base 7 is dismounted, one end of the extension spring 13 is in a free state, and then the locking compression rod 6 can be rotated to release the limit of the base 7.

When the device is used, the base 7 is placed on the surface of the mounting base 2, the base 7 is clamped between the two groups of folded edges 1, then the knob is rotated, the threaded rod 16 is driven to rotate through the knob, the threaded rod 16 can linearly move in the fixed seat 3 when rotating, so that the locking cover 4 is driven to linearly move on the surface of the mounting base 2 until the locking cover 4 completely covers the surface of the locking block 19, at the moment, the locking block 19 can extrude the push plate 18 in the locking cover 4, the push plate 18 can move towards the direction of the threaded rod 16 under stress and compress the locking spring 15, so that the base 7 is fixedly mounted on the surface of the mounting base 2, then the top end of the tension spring 13 is connected with the pressure lever lifting lug 12 through the hook, at the moment, the tension spring 13 is in an extension state, the locking pressure lever 6 can be pulled through the pressure lever lifting lug 12, so that the locking pressure lever 6 is tightly attached to the surface of the base 7, thereby realizing the reinforcement and the limit of the locking compression bar 6 between the base 7 and the mounting base 2.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a current-limiting fuse for cubical switchboard, includes mounting base (2), base (7) and fuse tube (10), its characterized in that: two groups of rod-shaped insulating supports (8) are mounted at the top of the base (7), porcelain sleeves (9) are fixedly mounted at the tops of the two groups of rod-shaped insulating supports (8) through screws, and two ends of the melt pipe (10) are respectively clamped on the inner walls of the two groups of porcelain sleeves (9);

a mounting foot (5) is integrally formed on the side wall of the mounting base (2), a threaded hole is formed in the surface of the mounting foot (5), and a connecting assembly is arranged between the top of the mounting base (2) and the base (7);

coupling assembling includes fixing base (3), locking cover (4), threaded rod (16), locking piece (19) and elastic component, the top integrated into one piece of mount pad (2) has fixing base (3), threaded rod (16) run through in the surface of fixing base (3) and extend to the another side of fixing base (3), just be threaded connection between threaded rod (16) and fixing base (3), the one end welding of threaded rod (16) has the knob, the other end of threaded rod (16) is rotated and is connected in the surface of locking cover (4), the lateral wall integrated into one piece of base (7) has locking piece (19), locking piece (19) block is in the inside of locking cover (4), just the inside of locking cover (4) is provided with elastic component.

2. A current-limiting fuse for a switchgear cabinet as claimed in claim 1, wherein: elastic component includes locking spring (15), connects arch (17) and push pedal (18), the inner wall of locking cover (4) and the surperficial integrated into one piece of push pedal (18) have connect arch (17), the outer wall in two sets of connection arch (17) is cup jointed respectively at the both ends of locking spring (15), just the outer wall laminating of locking spring (15) is in the inner wall of locking cover (4), push pedal (18) contact with locking piece (19).

3. A current-limiting fuse for a switchgear cabinet as claimed in claim 1 or 2, wherein: holding tank (20) have been seted up on the surface of locking piece (19), the inner wall of holding tank (20) rotates and is connected with three sets of cylinders (21), and three sets cylinder (21) equidistance distributes, three sets cylinder (21) all contact with the inner wall of locking cover (4).

4. A current limiting fuse for a switchgear cabinet as claimed in claim 3, wherein: still be provided with auxiliary assembly between base (7) and mounting base (2), auxiliary assembly is including distributing in locking cover (4) both sides and with rotation seat (14) of mounting base (2) rigid coupling, two sets of the surface rotation of rotating seat (14) is connected with linking arm (11), and is two sets of be equipped with between linking arm (11) and rotate locking depression bar (6) of being connected with it, locking depression bar (6) compress tightly through the retaining member base (7).

5. The current-limiting fuse for a switchgear cabinet according to claim 4, wherein: the retaining member is including connecting extension spring (13) between locking depression bar (6) and mounting base (2), the non-free end of extension spring (13) through fix the base lug on mounting base (2) with mounting base (2) swing joint, the free end of extension spring (13) through fix depression bar lug (12) on locking depression bar (6) with locking depression bar (6) detachable connection.

6. A current-limiting fuse for a switchgear cabinet as claimed in claim 1, wherein: the top of the mounting base (2) is integrally formed with two groups of folding edges (1), the base (7) is clamped on the inner walls of the two groups of folding edges (1), and the top of the mounting base (2) is in contact with the bottom of the base (7).