CN212485265U

CN212485265U - Low-loop resistance and high-reliability fusible core structure

Info

Publication number: CN212485265U
Application number: CN202021440559.3U
Authority: CN
Inventors: 刘时胜; 王斌; 付志军; 李阳智
Original assignee: Jiangxi Hangtong Electric Technology Co ltd; Shanghai Retel Electric Technology Co ltd
Current assignee: Jiangxi Hangtong Electric Technology Co ltd; Shanghai Retel Electric Technology Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-02-05
Anticipated expiration: 2030-07-20

Abstract

The utility model provides a fusible core structure of low loop resistance high reliability, including the fusible core, the locating plate both ends of fusible core are connected with current-carrying piece through boss structure respectively, and the current-carrying piece tail end of upside is connected with the upper end of fusible core, and the front end is visited into in the coupling assembling that fusible core upside set up and is lasted electric connection with coupling assembling, and the tail end of the current-carrying piece of downside is connected with the lower extreme of fusible core, and the front end is buckled the back and is set up the moving contact subassembly activity electric connection in fusible core one side position, the utility model discloses a design of fusible core metal cap and conductive loop integration, the metal cap of fusible core is direct to be connected with wire and contact, has reduced the loop resistance when electrically conductive, improves the assembly convenience of fusible core simultaneously, has practiced thrift the time of assembly cost. The metal caps and the locating piece at the two ends of the melting core adopt the design of a limit boss, are sleeved on the melting tube, are mutually buckled and limited by a boss structure, ensure the firmness and reliability of fixing the two, and have good development prospect.

Description

Low-loop resistance and high-reliability fusible core structure

Technical Field

The utility model relates to a low voltage apparatus field specifically is a fusible core structure.

Background

Circuit breakers are classified into high-voltage circuit breakers and low-voltage circuit breakers according to their range of use. The low-voltage circuit breaker is also called an automatic switch, commonly called an air switch and also called a low-voltage circuit breaker, and is an electric appliance which not only has the function of a manual switch, but also can automatically perform voltage loss, undervoltage, overload and short-circuit protection. It can be used for distributing electric energy, starting asynchronous motor infrequently, protecting power supply circuit and motor, etc., when they are seriously overloaded or short-circuited or under-voltage, etc. faults occur, it can automatically cut off circuit, its function is equivalent to the combination of fuse type switch and over-and under-heat relay, etc., and after breaking fault current, it does not need to change parts, so that it has been extensively used.

In current fuse, melt a tub both ends and pass through the metal cap parcel, install in conductive loop, lead to conductive loop's the too high that generates heat easily, to the spare part production influence in the conductive loop, reduce the life of spare part in the conductive loop, and there is unqualified risk in the fixed mode of assembly of metal cap and fusion tube.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a metal cap is stable with the fusion tube cooperation, and the core structure that melts at the end is low in installation back conductive loop calorific capacity.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a fusible core structure of low loop resistance high reliability, includes the fusible core, and the both ends of fusible core are connected with the current-carrying piece through boss structure respectively, and the current-carrying piece tail end of upside is connected with the upper end of fusible core, and the front end is visited in the coupling assembling that fusible core upside set up and is lasted electric connection with coupling assembling, and the tail end of the current-carrying piece of downside is connected with the lower extreme of fusible core, and the front end is buckled the back and is set up the moving contact subassembly activity electric connection in fusible core one side position.

As a further aspect of the present invention: the fusible core includes locating plate and fusion tube, and the fusion tube is rectangular shape, and the locating plate is the rectangle panel, wraps up in the side surface outside of fusion tube after buckling, end to end.

As a further aspect of the present invention: the joint of locating plate does not be provided with spacing draw-in groove and the spacing boss of locating plate, and spacing draw-in groove is concave station structure, and the spacing boss of locating plate is corresponding with spacing draw-in groove shape, and the locating plate head and the tail both ends are through spacing draw-in groove and the spacing boss structure buckle spacing connection of locating plate.

As a further aspect of the present invention: and limiting clamping grooves are formed in the positions, close to the upper end face and the lower end face of the fusion tube, of the four side surfaces of the positioning plate.

As a further aspect of the present invention: the current-carrying piece comprises a wiring board and a fixed contact, the wiring board is connected with a connecting assembly, the fixed contact is movably connected with a moving contact assembly, the bottom surfaces of the wiring board and the fixed contact are rectangular panels, a long strip structure extends from one side of each rectangle to be connected with the connecting assembly and the moving contact assembly, protruding rectangular structures are arranged on the other three sides of each rectangle, and the outer end of each rectangular structure is connected with a boss-shaped current-carrying piece limiting boss.

As a further aspect of the present invention: the current-carrying piece is buckled the end position of outstanding rectangle structure and rectangular structure parcel fusion tube through buckling, and the spacing realization current-carrying piece of spacing boss through current-carrying piece and the spacing draw-in groove buckle of locating plate is connected with the stability of fusible core.

Advantageous effects

1. The utility model discloses a metal cap and the conductive loop integrated design of fusible core directly are connected with wire and contact, reduce electrically conductive return circuit resistance, improve the assembly convenience of fusible core simultaneously.

2. The utility model discloses metal cap and setting element adopt spacing boss design, overlap it on the fusion tube, have guaranteed both fixed fastness and reliability.

Drawings

Fig. 1 is a schematic view of the installation of a fusible core according to a first embodiment of the present invention.

Fig. 2 is a schematic view of a fusible core structure according to a first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a wiring board according to a first embodiment of the present invention.

Fig. 4 is a schematic view of a static contact structure according to an embodiment of the present invention.

Fig. 5 is an expanded view of a fusible core structure according to a first embodiment of the present invention.

Fig. 6 is a schematic view of the installation of the fusible core according to the second embodiment of the present invention.

Fig. 7 is a schematic view of a fusible core structure according to a second embodiment of the present invention.

In FIGS. 1-7: 1-a fusible core, 101-a positioning plate, 102-a fusion tube, 103-a limiting clamping groove, 104-a positioning plate limiting boss, 2-a current-carrying piece, 201-a wiring board, 202-a static contact, 203-a current-carrying piece limiting boss, 3-a connecting assembly and 4-a movable contact assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

Example 1

Please refer to fig. 1-5, in the embodiment of the present invention, a fusible core structure with low loop resistance and high reliability, including fusible core 1, positioning plate 101, fuse tube 102, limiting clamping groove 103, limiting boss 104 of positioning plate, current-carrying piece 2, wiring board 201, static contact 202, limiting boss 203 of current-carrying piece, connecting assembly 3, moving contact assembly fusible core 4, the both ends of fusible core 1 are connected with current-carrying piece 2 through boss structure respectively, 2 tail ends of current-carrying piece of upside are connected with the upper end of fusible core 1, the front end is visited in the connecting assembly 3 that fusible core 1 upside set up and is lasted electric connection with connecting assembly 3, the tail end of current-carrying piece 2 of downside is connected with the lower extreme of fusible core 1, the front end is buckled the back and is set up at the movable contact assembly 4 activity electric connection of fusible core 1 one side.

Wherein: the fusible core 1 comprises a positioning plate 101 and a fusible tube 102, the fusible tube 102 is in a long strip shape, the positioning plate 101 is a rectangular panel, and the positioning plate is wrapped on the outer side of the side surface of the fusible tube 102 after being bent and is connected end to end.

Wherein: the joint of the positioning plate 101 is provided with a limiting clamping groove 103 and a positioning plate limiting boss 104 respectively, the limiting clamping groove 103 is of a concave structure, the shape of the positioning plate limiting boss 104 corresponds to that of the limiting clamping groove 103, and the head end and the tail end of the positioning plate 101 are in structural buckle limiting connection with the positioning plate limiting boss 104 through the limiting clamping groove 103.

Wherein: the four side surfaces of the positioning plate 101 are provided with limiting clamping grooves 103 at positions close to the upper end surface and the lower end surface of the fusion tube 102.

Wherein: the current-carrying part 2 comprises a wiring board 201 and a fixed contact 202, the wiring board 201 is connected with a connecting component 3, the fixed contact 202 is movably connected with a moving contact component 4, the bottom surfaces of the wiring board 201 and the fixed contact 202 are rectangular panels, a long strip structure extends from one side of each rectangle to be connected with the connecting component 3 and the moving contact component 4, protruding rectangular structures are arranged on the other three sides of each rectangle, and the outer end of each rectangular structure is connected with a boss-shaped current-carrying part limiting boss 203.

Wherein: the current-carrying piece 2 is buckled and limited with the limiting clamping groove 103 of the positioning plate 101 through the bending protruding rectangular structure and the long strip structure to wrap the end position of the melting tube 102, so that the current-carrying piece 2 is stably connected with the melting core 1.

Use the utility model discloses the time, be connected to the coupling assembling 3 in the fuse with the front end of wiring board 201 among current-carrying piece 2, fuse core 1 is fixed through the corresponding mounting groove buckle in the fuse housing, fuse installation starts back moving contact subassembly 4 and takes place to rotate under fuse switch module's drive, laminate with static contact 202, realize the intercommunication of conducting wire, through 1 metal cap of fuse core and the integrated design of conductive return circuit, it is direct to be connected with wire and contact, reduce conductive return circuit resistance, improve the assembly convenience of fuse core 1 simultaneously, fuse core and current-carrying piece's structural connection, both fixed fastness and reliability of fuse core 1 and current-carrying piece 2 have been increased.

Example 2

Please refer to fig. 1-7, in the embodiment of the present invention, a fusible core structure with low loop resistance and high reliability, including fusible core 1, positioning plate 101, fuse tube 102, limiting clamping groove 103, limiting boss 104 of positioning plate, current-carrying piece 2, wiring board 201, static contact 202, limiting boss 203 of current-carrying piece, connecting assembly 3, moving contact assembly fusible core 4, the both ends of fusible core 1 are connected with current-carrying piece 2 through boss structure respectively, 2 tail ends of current-carrying piece of upside are connected with the upper end of fusible core 1, the front end is visited in the connecting assembly 3 that fusible core 1 upside set up and is lasted electric connection with connecting assembly 3, the tail end of current-carrying piece 2 of downside is connected with the lower extreme of fusible core 1, the front end is buckled the back and is set up at the movable contact assembly 4 activity electric connection of fusible core 1 one side.

Wherein: the fusible core 1 comprises a positioning plate 101 and a limiting clamping groove 103, the fusion tube 102 is in a long strip shape, and the head ends of the limiting clamping grooves in the strip shape are arranged at the two ends of the four side surfaces of the fusion tube and are in a concave table shape.

Wherein: the current-carrying piece 2 is buckled and limited through the current-carrying piece limiting boss 203 and the limiting clamping groove 103 to realize the stable connection of the current-carrying piece 2 and the fusible core 1 through the bending protruding rectangular structure and the strip structure wrapping the end position of the fusible tube 102.

Use the utility model discloses the time, be connected to the coupling assembling 3 in the fuse with the front end of wiring board 201 among current-carrying piece 2, fuse core 1 is fixed through the corresponding mounting groove buckle in the fuse housing, fuse installation starts back moving contact subassembly 4 and takes place to rotate under fuse switch module's drive, laminate with static contact 202, realize the intercommunication of conducting wire, through fuse core 1 metal cap and the integrated design of conducting circuit, it is direct to be connected with wire and contact, reduce electrically conductive return circuit resistance, improve fuse core 1's assembly convenience simultaneously, fuse 102 surface directly is provided with spacing draw-in groove 103, the cost that has reduced locating plate 101 stirs with being connected that locating plate 101 brought, both fixed fastness and reliability have further been improved.

The above is only the preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims

1. The utility model provides a fusible core structure of low loop resistance high reliability, a serial communication port, including fusible core (1), the both ends of fusible core (1) are connected with current-carrying piece (2) through boss structure respectively, the current-carrying piece (2) tail end of upside is connected with the upper end of fusible core (1), the front end is visited in the coupling assembling (3) that fusible core (1) upside set up and is lasted electric connection with coupling assembling (3), the tail end of current-carrying piece (2) of downside is connected with the lower extreme of fusible core (1), the front end is buckled the back and is set up at the movable contact subassembly (4) swing joint of fusible core (1) one side position.

2. The low loop resistance high reliability fusible core structure of claim 1, wherein: the fusible core (1) comprises a positioning plate (101) and a fusion tube (102), the fusion tube (102) is in a long strip shape, the positioning plate (101) is a rectangular panel, and the positioning plate is wrapped on the outer side of the side surface of the fusion tube (102) after being bent and is connected end to end.

3. The low loop resistance high reliability fusible core structure of claim 1, wherein: the joint of locating plate (101) is provided with spacing draw-in groove (103) and locating plate spacing boss (104) respectively, and spacing draw-in groove (103) are concave station structure, and locating plate spacing boss (104) are corresponding with spacing draw-in groove (103) shape, and locating plate (101) head and the tail both ends are passed through spacing draw-in groove (103) and are connected with locating plate spacing boss (104) structure buckle is spacing.

4. The low loop resistance high reliability fusible core structure of claim 1, wherein: limiting clamping grooves (103) are formed in the positions, close to the upper end face and the lower end face of the fusion tube (102), of the four side surfaces of the positioning plate (101).

5. The low loop resistance high reliability fusible core structure of claim 1, wherein: current-carrying piece (2) are including wiring board (201) and static contact (202), wiring board (201) are connected with coupling assembling (3), static contact (202) and movable contact subassembly (4) swing joint, the bottom surface of wiring board (201) and static contact (202) is the rectangle panel, one side of rectangle extends rectangular structure and is connected with coupling assembling (3), movable contact subassembly (4), three sides are provided with outstanding rectangle structure in addition, the outer end of rectangle structure is connected with the spacing boss (203) of current-carrying piece of boss shape.

6. The low loop resistance high reliability fusible core structure of claim 1, wherein: the current-carrying piece (2) is buckled and limited with a limiting clamping groove (103) of the positioning plate (101) through a current-carrying piece limiting boss (203) and the end position of the long strip structure wrapping the fusion tube (102) through a bent and protruded rectangular structure to realize the stable connection of the current-carrying piece (2) and the fusion core (1).