CN217588836U

CN217588836U - Bolt type connection fuse

Info

Publication number: CN217588836U
Application number: CN202221266204.6U
Authority: CN
Inventors: 郑如碧; 张学森
Original assignee: DELIXI GROUP CO LTD
Current assignee: DELIXI GROUP CO LTD
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2022-10-14
Anticipated expiration: 2032-05-23

Abstract

The utility model discloses a fuse is connected to bolt formula, include the shell and set up the fusible core subassembly in the middle part cavity of shell, two erection supports that are provided with L type structure are fixed at the both ends of shell, it is provided with two through-hole structure that are regular polygon structure to correspond on two erection supports, the both ends of fusible core subassembly are connected respectively on many sides of two through-hole structure, the fusible core subassembly that adopts this technical design is polygon structure around the profile appearance of through-hole structure and arranges in the shell, specifically be the hexagon structure setting, thereby fuse inner structure overall arrangement has been optimized, increased the fuse-element and can set up quantity inside the fuse-element, just also increase the current-carrying area, promote the rated current of bolt formula connection fuse, it is bigger to compare the electric current that can bear the weight of before, can better satisfy the consumer use of some heavy currents, promote the performance of product.

Description

Bolt type connecting fuse

Technical Field

The utility model relates to a low pressure fuse technical field, concretely relates to fuse is connected to bolt formula.

Background

The fuse protector is a current protector manufactured according to the principle that after the current exceeds a specified value for a certain time, the fuse body is melted by the heat generated by the fuse protector, so that a circuit is disconnected, and the fuse protector is widely applied to a low-voltage distribution system, a control system and electric equipment, is used for short-circuit and overcurrent protection, and is one of the most commonly applied protection devices. When the fuse protector is used, the fuse protector is connected in series in a protected circuit, when the current of the protected circuit exceeds a specified value and a certain time passes, the fuse body is fused by the heat generated by the fuse body, so that the circuit is disconnected, and the protection effect is achieved.

The fuse commonly seen in the market mainly comprises a fusion tube, a melt and two contact blades, wherein the melt is welded between the two contacts and encapsulated in the fusion tube, and the two contact blades are directly inserted into a socket at a preset position during installation. However, the contact type fuse has the defects that the number of the fuse elements is small due to the limitation of the structural layout in the fuse tube, and the current-carrying area is relatively small, so that the current which can be carried by the existing fuse is not large enough, and the use of some high-current electric equipment cannot be well met.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the fuse-element among the prior art and can setting up quantity less than normal by the restriction of structural layout inside the fusion tube, can bear the electric current of passing through and be big enough for the fuse can not better satisfy the problem that some heavy current consumer used.

In order to solve the problem, the utility model provides a fuse is connected to bolt formula, including the shell that has the middle part cavity, with set up in fusible core subassembly in the middle part cavity of shell, two of the fixed two erection supports that are provided with L type structure in both ends of shell, two correspond on the erection support be provided with two through-hole structures of middle part cavity axial intercommunication, two the through-hole structure is regular polygon hole, fusible core subassembly's both ends are connected respectively on many sides of two through-hole structures, make fusible core subassembly centers on the profile appearance of through-hole structure is polygonal structural arrangement in the cavity of middle part.

As a preferred scheme, two through-hole structures are regular hexagon hole, the fusible core subassembly is at the middle part cavity by the fuse-element of a plurality of sheet structures interval arrangement in proper order according to the hexagon structure.

As a preferred scheme, two ends of the melt are bent, attached to and abutted against the outer surface of the mounting support and are welded and fixed with the mounting support.

As a preferable scheme, a plurality of diamond-shaped heat dissipation holes are formed in the melt at intervals.

Preferably, the mounting support comprises a baffle portion arranged on the end face of the shell in a matched mode, and an L-shaped connecting plate formed by extending the bottom edge of the baffle portion downwards, and the L-shaped connecting plate is mounted on a preset mounting position through a fixing structure.

As a preferred scheme, a waist-shaped hole is formed in the L-shaped connecting plate, and the fixing structure is a bolt assembly arranged in the waist-shaped hole in a penetrating mode.

As a preferable scheme, the fuse protector further comprises two cover plates which are arranged on the two mounting supports and cover the through hole structures, and fusing indicators are arranged on the cover plates and used for popping out of the cover plates after the fusible core assembly is fused.

As a preferred aspect, the fusing indicator includes:

the mounting sleeve is fixed on one cover plate and is provided with a groove;

the positioning piece is fixed on the other cover plate;

the elastic indicating piece is movably arranged in the mounting sleeve, penetrates through the fuse wire, is connected with the positioning piece and pops out of the mounting sleeve when the fuse wire is fused.

As a preferable scheme, the housing is made of a ceramic material integrated structure, and each side surface of the housing is an arc-shaped surface.

Compared with the prior art, the technical scheme of the utility model have the following advantage:

1. the utility model provides an among the bolted connection fuse, two erection supports set up at the shell both ends as the conductor part that links to each other with the fusible core subassembly, and play the installation supporting role to the fuse, two through-hole structures through setting up regular polygon structure on two erection supports, connect the both ends of fusible core subassembly respectively on many sides of two through-hole structures, the fusible core subassembly of design like this is polygonized structure arrangement in the shell around the profile appearance of through-hole structure, thereby fuse inner structure overall arrangement has been optimized, the fuse has increased the fuse-element and can set up quantity inside the fuse, just also increase the current-carrying area, promote the rated current of bolted connection fuse, it is bigger to bear the electric current that passes through before comparing, can better satisfy the consumer use of some heavy currents, promote the performance of product.

2. The utility model provides an among the bolt-type connection fuse, be regular hexagon hole design according to two through-hole structures, the fusible core subassembly comprises a plurality of lamellar structure's fuse-element, correspond according to hexagonal structure interval arrangement in proper order in the middle part cavity through six fuse-elements, structural configuration is reasonable, design like this and in the inside six parallel fuse-element passageways that form of fuse, the rated current of fuse is connected to the promotion bolt-type, can be applicable to on the consumer and the distribution system of heavy current.

3. The utility model provides an among the bolted connection fuse, erection support comprises baffle portion and L shape connecting plate, be provided with waist shape hole on the L shape connecting plate, through installing baffle portion matching on shell one end, then pass waist shape hole back through bolt assembly with L shape connecting plate fixed to the mounted position that links to each other with electrical equipment on can, the design is through the contact installation that L shape connecting plate has replaced current fuse like this, play electric connection and installation fixed action, stability is good, it is wide to be suitable for the installation scope.

4. The utility model provides an among the bolted connection fuse, the fusing indicator comprises installation cover, setting element, elasticity indicator and fuse, and the elasticity indicator holds in the installation cover under the traction force effect of fuse, when fusing takes place for the fuse-element, the fuse also can be fused by the heavy current that passes through, and the elasticity indicator has lost the traction force of fuse this moment, and it can pop out outside the installation cover under self elastic force effect for the one end of elasticity indicator is outstanding in the apron outside, and whether to observe the fuse for fusing state for convenient operating personnel.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below.

Fig. 1 is a schematic perspective view of a bolt-type connection fuse provided by the present invention;

FIG. 2 is a schematic view of the structure of the fuse element of the present invention installed inside the fuse element;

FIG. 3 is a schematic plan view of the bolted fuse shown in FIG. 2;

FIG. 4 is a schematic view of a fuse indicator according to the present invention;

description of the reference numerals: 1. a housing; 2. mounting a support; 21. a baffle portion; 22. an L-shaped coupling plate; 23. a waist-shaped hole; 3. a fuse core assembly; 30. melting the materials; 31. heat dissipation holes; 4. a via structure; 5. a cover plate; 6. a fusing indicator; 61. installing a sleeve; 62. an elastic indicator; 63. a positioning member; 64. a fuse.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

The present embodiment is described in detail below with reference to the accompanying drawings:

the utility model provides a as shown in fig. 1-4 a bolt formula connection fuse, including shell 1 that has the middle part cavity, and set up in fusible core subassembly 3 in the middle part cavity of shell 1, its characterized in that: two mounting supports 2 of an L-shaped structure are fixedly arranged at two ends of the shell 1, two through hole structures 4 axially communicated with the middle cavity are correspondingly arranged on the two mounting supports 2, the two through hole structures 4 are regular polygon holes, and two ends of the fusible core component 3 are respectively connected to multiple side edges of the two through hole structures 4, so that the fusible core component 3 is arranged in a polygon structure in the middle cavity around the outline of the through hole structures 4.

In the above-mentioned embodiment, two erection supports 2 set up at 1 both ends of shell as the conductor part that links to each other with fusible core subassembly 3, and play the installation supporting role to the fuse, through two through-hole structures 4 that set up regular polygon structure on two erection supports 2, connect the both ends of fusible core subassembly 3 respectively on many sides of two through-hole structures 4, fusible core subassembly 3 that designs like this is polygonized structure arrangement around the profile appearance of through-hole structure 4 in the shell, thereby fuse inner structure overall arrangement has been optimized, the fuse has increased the fuse and can set up quantity inside the fuse, just also increase the current-carrying area, the rated current of fuse is connected to the promotion bolt formula, the fuse product can bear the electric current that passes through before comparing is bigger, can better satisfy the consumer use of some heavy currents, promote the performance of product.

The specific arrangement of the fuse core assembly and mounting brackets is described in detail below with reference to FIGS. 1-3:

two through-hole structure 4 are regular hexagon hole, the fusible core subassembly 3 is by the fuse-element 30 of a plurality of sheet structures interval arrangement in proper order in the cavity of middle part according to the hexagon structure, corresponds promptly and has set up six fuse-elements 30 according to the hexagon structure range inside the fuse, and structural layout is reasonable, designs like this and forms six parallel fuse-element 30 passageways inside the fuse, promotes the rated current of fuse, can be applicable to on the consumer and the distribution system of heavy current.

The laminating of the both ends of fuse-element 30 after buckling supports erection support 2's surface, and with erection support 2 welded fastening, the interval is provided with the louvre 31 of a plurality of rhombuses shape on the fuse-element 30, and these louvres 31 are the multirow along the 30 length direction of fuse-element and arrange, promote the heat dispersion of fuse-element 30, in addition, shell 1 is made by ceramic material body structure, each side of shell 1 is the arcwall face, is favorable to increasing shell 1's heat radiating area, makes the inside heat of fuse give off the conduction fast away.

As shown in fig. 2, the mounting support 2 includes a baffle portion 21 disposed on the end surface of the housing 1 in a matching manner, and an L-shaped connecting plate 22 formed by extending the bottom edge of the baffle portion 21 downward, the L-shaped connecting plate 22 is mounted on a preset mounting position through a fixing structure, wherein a waist-shaped hole 23 is disposed on the L-shaped connecting plate 22, and the fixing structure is a bolt assembly disposed in the waist-shaped hole 23 in a penetrating manner. When the fuse is installed, the baffle part 21 is installed on one end of the shell 1 in a matching mode, then the L-shaped connecting plate 22 is fixed to the installation position connected with electrical equipment after the bolt assembly penetrates through the waist-shaped hole 23, the design is that the L-shaped connecting plate 22 replaces the contact installation of the existing fuse, the electric connection and installation fixing effects are achieved, the installation stability is good, and the installation application range is wide.

In order to conveniently observe whether the fuse is in the fusing state, the bolt type connection fuse of the embodiment further comprises two cover plates 5 which are arranged on the installation supports 2 and cover the through hole structures 4, the installation supports 2 and the cover plates 5 are respectively made of metal materials, baffle plate parts 21 of the installation supports 2 are fixed to two ends of the shell 1 through screw structures, fusing indicators 6 are arranged on the cover plates 5, and the fusing indicators 6 are used for bouncing out of the cover plates 5 after the fuse core assemblies 3 are fused, so that a user is reminded that the fuse 30 in the fuse is fused.

As a preferred embodiment, as shown in fig. 4, the fusing indicator 6 includes a mounting sleeve 61, a positioning member 63, an elastic indicating member 62 and a fuse 64, wherein the mounting sleeve 61 is fixed on one of the cover plates 5 and is provided with a groove; the positioning piece 63 is fixed on the other cover plate 5; the elastic indicator 62 is movably arranged in the mounting sleeve 61, the elastic indicator 62 passes through the mounting sleeve 61 through a fuse wire 64 to be connected with the positioning part 63, and the elastic indicator 62 is ejected out of the mounting sleeve 61 when the fuse wire 64 is fused. The elastic indicator 62 is composed of an indicator body and a spring, the spring is arranged between the indicator body and the mounting sleeve 61 in a pressed mode, and two ends of the fuse wire 64 are connected to the indicator body and the positioning piece 63 respectively. With the adoption of the structure, the elastic indicating piece 62 is accommodated in the mounting sleeve 61 under the action of the traction force of the fuse wire 64, when the fuse element 30 is fused, the fuse wire 64 can be fused by a large passing current, at the moment, the elastic indicating piece 62 loses the traction force of the fuse wire 64, and can be popped out of the mounting sleeve 61 under the action of the elastic force of the elastic indicating piece 62, so that one end of the elastic indicating piece 62 protrudes out of the cover plate 5, and an operator can conveniently observe whether the fuse element is in a fused state.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. A bolted connection fuse comprising a housing (1) having a central cavity, and a fusible core assembly (3) disposed in the central cavity of the housing (1), characterized in that: two mounting supports (2) of an L-shaped structure are fixedly arranged at two ends of the shell (1), two through hole structures (4) which are axially communicated with the middle cavity are correspondingly arranged on the two mounting supports (2), the two through hole structures (4) are regular polygonal holes, two ends of the fusible core component (3) are respectively connected to multiple side edges of the two through hole structures (4), and the fusible core component (3) is arranged in a polygonal structure in the middle cavity around the outline of the through hole structures (4).

2. A bolted connection fuse as defined in claim 1, wherein: two through-hole structure (4) are regular hexagon hole, fusible core subassembly (3) are arranged at the middle part cavity by fuse-element (30) of a plurality of sheet structure interval in proper order according to the hexagon structure.

3. A bolted connection fuse as claimed in claim 2, wherein: the two ends of the melt (30) are bent and then attached to and abutted against the outer surface of the mounting support (2), and the two ends of the melt are welded and fixed with the mounting support (2).

4. A bolted connection fuse as claimed in claim 3, wherein: a plurality of diamond-shaped heat dissipation holes (31) are formed in the melt (30) at intervals.

5. A bolted connection fuse as claimed in claim 4, wherein: the mounting support (2) comprises a baffle part (21) which is arranged on the end surface of the shell (1) in a matching mode, and an L-shaped connecting plate (22) formed by downward extending of the bottom edge of the baffle part (21), wherein the L-shaped connecting plate (22) is mounted on a preset mounting position through a fixing structure.

6. A bolted connection fuse according to claim 5, wherein: be provided with waist shape hole (23) on L shape connecting plate (22), fixed knot constructs for wearing to locate the bolt assembly in waist shape hole (23).

7. A bolted connection fuse according to any of claims 1 to 6, characterized in that: still including setting up two on erection support (2) and cover two apron (5) of through-hole structure (4), be provided with fusing indicator (6) on apron (5), fusing indicator (6) be used for taking place to fuse in fuse component (3) pop out after the fusing in apron (5).

8. A bolted connection fuse as claimed in claim 7, wherein: the fusion indicator (6) comprises:

the mounting sleeve (61) is fixed on one cover plate (5) and is provided with a groove;

the positioning piece (63) is fixed on the other cover plate (5);

the elastic indicator (62) is movably arranged in the installation sleeve (61), the elastic indicator (62) penetrates through the installation sleeve (61) through a fuse wire (64) to be connected with the positioning piece (63), and the elastic indicator pops out of the installation sleeve (61) when the fuse wire (64) is fused.

9. A bolted connection fuse as claimed in claim 7, wherein: the shell (1) is made of a ceramic material integrated structure, and each side face of the shell (1) is an arc-shaped face.