CN107481902A - Fuse unit and its fuse element - Google Patents
Fuse unit and its fuse element Download PDFInfo
- Publication number
- CN107481902A CN107481902A CN201710905396.8A CN201710905396A CN107481902A CN 107481902 A CN107481902 A CN 107481902A CN 201710905396 A CN201710905396 A CN 201710905396A CN 107481902 A CN107481902 A CN 107481902A
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- China
- Prior art keywords
- fuse element
- fuse
- hole
- port
- metal cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H85/08—Fusible members characterised by the shape or form of the fusible member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/143—Electrical contacts; Fastening fusible members to such contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/143—Electrical contacts; Fastening fusible members to such contacts
- H01H85/157—Ferrule-end contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/18—Casing fillings, e.g. powder
Landscapes
- Fuses (AREA)
Abstract
The present invention provides a kind of fuse unit and its fuse element, the fuse element is configured to hollow cylindrical, the opposite end of the fuse element has been formed separately a first port and second port, the fuse element is provided with through hole, and the fuse element provided with through hole in forming narrow connecting portion to form the fuse part of the fuse element.Whereby, by the way that fuse element is configured into hollow cylindrical and is provided with multiple narrow linking parts, there is larger sectional area using cylindrical shape fuse element and improve rated current, the columnar structured structural strength for improving narrow linking part is also utilized simultaneously, and make all fill out on demand inside and out fuse element and set arc suppression, it is ensured that the safety in utilization of the fuse unit including fuse element of the present invention.
Description
Technical field
The present invention relates to fuse technical field, relates in particular to fuse unit and its cylindric fuse element.
Background technology
As shown in figure 1, a kind of existing fuse unit 10 of display, the fuse unit 10 include fuse element 11,
The protection carrier 12 and envelope being sheathed on outside the fuse element 11 are described located at the metal cap 13 for protecting carrier 12 both ends
Metal cap 13 by solder 16 weld with the fuse element 11 it is electrically conductive be connected.Wherein, the fuse element 11 is usually
Conductor wire, conducting strip or Surface coating have the insulated wire of conductor wire or insulating bar to be formed.
In order to improve the rated current of fuse unit (current rating), fuse element needs have relatively low electricity
Impedance.Fuse unit specification and shape by fixing situation under, can be realized by following several method reduce it is molten
The electrical impedance of silk element, it includes：(1) fuse element is prepared using low-resistance material；Or as shown in Fig. 2 (1) increase is molten
The wide cut of strip fuse element 11 is widened in the thickness of silk element 11 or (3), is improved by increasing the sectional area of fuse element
Flow through the rated current of fuse element 11.
Wherein, in (1) kind method, there is provided a kind of fuse unit for including different material material, however, due to low resistance
Anti- metal material generally selects only copper, silver and/or its alloy, so as to exist in metal material or alloy material selection
Limitation.In (2) kind method, fuse element is mainly made up of metallic sheet stock, but the wide difficulty than processing of thickness of sheet metal
Degree in turn results in processing limitation much larger than length-width ratio processing and costliness.(3) kind method is simple and clear, however, being limited to protect
Carrier 12 inner space and fuse element 11 should not be contacted with protection carrier 12 to avoid improper heat transfer from causing fuse to fail
The problems such as, therefore the width maximum of fuse element 11 can only be expanded to the size close to protection carrier 12 internal diameter.
In addition, as shown in Figures 3 to 5, show three kinds of constructive embodiments of existing chip fuse element 14, the chip
Fuse element 14 is by forming narrow linking part 15, when fuse unit is had an effect, to make described narrow and structure thin
Weak linking part 15 preferentially disconnects.The linking part 15 can be formed at the stage casing position of chip fuse element 14 and only such as Fig. 3
Single linking part 15 is formed, or, the linking part 15 can be formed at the stage casing position of chip fuse element 14 and shape such as Fig. 4
Into two linking parts 15, or, the linking part 15 can be formed close to the position of the terminal of chip fuse element 14 such as Fig. 5
Put, and by perforate with the multipair linking part 15 in the formation of the opposite sides in hole in pairs.However, foregoing linking part 15 also holds
Easily because its is narrow and weak structure be easy to fracture, reduce the fine ratio of product of fuse unit.
The content of the invention
In view of the foregoing, the present invention provides a kind of fuse unit and its fuse element, by the way that fuse element is shaped
For hollow cylindrical and multiple narrow linking parts are provided with, there is larger sectional area using cylindrical shape fuse element and improve specified electricity
Stream, while also utilize the columnar structured structural strength for improving narrow linking part.
To achieve the above object, the present invention, which adopts the technical scheme that, provides a kind of fuse element, the fuse element into
Shape is hollow cylindrical, and the opposite end of the fuse element has been formed separately a first port and second port, the fuse
Element is provided with through hole, and the fuse element in forming narrow connecting portion provided with through hole to form the molten of the fuse element
Disconnected portion.
In the fuse element embodiment of the present invention, the fuse element offers at least one around its cylinder-like structure and arranged
Pore structure, the open-celled structure includes multiple through holes, and the narrow connecting portion between the through hole of same row forms the fuse
The fuse part of element.
In the fuse element embodiment of the present invention, the fuse element is the cylinder-like structure being rolled into by sheet material, described
Material has relative the first jointing edge and the second jointing edge, has first between first jointing edge and second jointing edge
Enclose while and second enclose while connect；The sheet material is made to be rolled into the fuse element, first jointing edge connects with described second
Side fixed engagement is closed, described first, which encloses side, rolls the first port for surrounding the fuse element, and described second, which encloses side, rolls
Surround the second port of the fuse element.
In the fuse element embodiment of the present invention, the same exhausting hole of the fuse element is shape and size identical hole
Structure, and it is same arrange pore structure fuse part width it is identical.
In the fuse element embodiment of the present invention, it is ellipse that the through hole is that major axis extends along the fuse element length direction
Circular port, and the long axis length of the through hole of same row is isometric；Make the connecting portion shape that distance is most short between adjacent two through hole
Into the fuse part of the fuse element.
In the fuse element embodiment of the present invention, the fuse element arranges pore structure provided with three, including located at described molten
The one of silk element stage casing ranked first open-celled structure and ranked second open-celled structure located at the two of the fuse element both ends；Wherein,
First open-celled structure is often arranged including spaced three first through hole and three the first fuse part；Second perforate
Structure is often arranged including spaced three the second through holes and three the second fuse part；The first through hole is logical with described second
Hole is all the slotted eye that major axis extends along the fuse element length direction, and the long axis length of the first through hole is more than described
The long axis length of second through hole；The minor axis length of the through hole of first open-celled structure and the through hole of second open-celled structure
Minor axis length is equal, and first fuse part is identical with the width of second fuse part.
In the fuse element embodiment of the present invention, the through hole is configured to slotted eye, circular port, hexagonal hole or capsule
Shape hole.
In the fuse element embodiment of the present invention, the fuse element is made up of the metal selected from silver or copper, or described
Fuse element by be made selected from silver/copper metal alloy that either copper/tin is formed or the fuse element by tin plating on copper or
It is silver-plated on person's copper to be made.
In the fuse element embodiment of the present invention, the fuse part of the fuse element is provided with tin layers.
The present invention separately provides a kind of fuse unit, and it includes foregoing fuse element.
In the fuse unit embodiment of the present invention, the fuse unit includes：The fuse element；Protect carrier,
It is sheathed on outside the fuse element；Metal cap, there are two, the metal cap is respectively arranged on the fuse element and the guarantor
The both ends of carrier are protected, and the both ends and the inner surface of the metal cap of the both ends of the fuse element and the protection carrier are welded
It is fixed.
In the fuse unit embodiment of the present invention, the metal cap includes capping plate portion, enclosed located at the capping plate portion
The ring wall of the week side of boss and by it is described capping plate portion and the ring wall enclose and set the space that is nested with formed, it is described capping plate portion inner surface
The middle space that is nested with described in forms inserting column, and the capping plate portion inner surface of the metal cap is provided with solder；Make the metal
Cap is located at the both ends of the fuse element and the protection carrier, the first port and second port inside points of the fuse element
Not with the inserting column grafting of the metal cap and being welded and fixed with the solder；Welded with the solder at the both ends of the protection carrier
It is fixed, and the ring wall of the metal cap is covered in outside the port of the protection carrier.
In the fuse unit embodiment of the present invention, arc suppression, the extinguishing arc material are provided with inside the fuse unit
The mezzanine space that material is filled at the inner chamber of the fuse element and/or is filled between the fuse element and the protection carrier
In.
The present invention fuse unit embodiment in, the arc suppression be selected from sand, silica gel, melamine, magnesium hydroxide,
Glass or its combination.
In the fuse unit embodiment of the present invention, the form of the arc suppression is graininess, bar-shaped, hollow tubular,
Pencil or cylindrical shape.
In the fuse unit embodiment of the present invention, the protection carrier selected from ceramics or melamine by adding glass
Material is made.
The present invention makes it have following beneficial effect as a result of above technical scheme：
(1) present invention realizes by the way that fuse element is configured into hollow cylindrical structure and improves fuse element rated current
Purpose, while fuse element compared to linear expansion and the fuse element formed with narrow connection fuse part all have more
Excellent structural strength.
(2) present invention is filled out by the way that fuse element is configured into hollow cylindrical structure so as to which arc suppression is fixed
If inside fuse element, for the fuse unit that only arc suppression is filled at outside fuse element, by extinguishing arc material
When material is filled in inside fuse element, it is located at due to fuse element among fuse unit and is not contacted with protection carrier so that be molten
Silk element is more beneficial for fuse element fusing because heat caused by electric current is not easy to be passed radiating.
(3) present invention forms inserting column by the metal cap inner surface in fuse unit so that fuse element is easier quilt
Alignment assembling forms fuse unit, avoids fuse element installation site misalignment really, causes with protecting carrier to contact and then shadow
Ring the technical problem of fuse unit work.
Brief description of the drawings
Fig. 1 is the structure schematic cross-sectional view of existing fuse unit.
Fig. 2 is the structure of A-A hatching lines in Fig. 1 through 1. thickening and 2. widening the cross-sectional view of fuse element.
Fig. 3, Fig. 4, Fig. 5 are the structural representations that existing fuse element is provided with narrow linking part.
Fig. 6 is the structure schematic cross-sectional view of fuse unit of the present invention.
Fig. 7 is laminated structure schematic diagram of the fuse element of the present invention before tubular is processed into.
Fig. 8 is the structural representation that fuse element of the present invention is processed into tubular.
Fig. 9 is that the inside of tubular fuse element of the present invention is filled out and is provided with
Figure 10 is that fuse unit of the present invention shows in the structure section view that the arc suppression set is all filled out in carrier and fuse element
It is intended to.
Figure 11 is the structure schematic cross-sectional view of B-B hatching lines in Figure 10.
Figure 12 is that the metal cap first of fuse unit of the present invention welds the structural representation of embodiment.
Figure 13 is that the metal cap second of fuse unit of the present invention welds the structural representation of embodiment.
Figure 14 is the embodiment A of fuse unit of the present invention to embodiment E schematic diagram.Show row embodiment A extremely
The main view schematic appearance (array 1) of embodiment E cylindric fuse element, end side view schematic appearance (array 2) and
Cylindric fuse element forms the structure schematic cross-sectional view (array 3) of fuse unit located at protection carrier inside.
Figure 15 is the embodiment F of fuse unit of the present invention to embodiment J schematic diagram.Show row embodiment F extremely
The main view schematic appearance (array 1) of embodiment J cylindric fuse element, end side view schematic appearance (array 2) and
Cylindric fuse element forms the structure schematic cross-sectional view (array 3) of fuse unit located at protection carrier inside.
Figure 16 is the embodiment K of fuse unit of the present invention to embodiment N schematic diagram.Show row embodiment K extremely
The fuse part planform schematic diagram (array 1) of embodiment N fuse element, fuse part are provided with the structural representation of metal level
The structural representation (array 3) of (array 2), fuse element provided with multiple rows of fuse part, the fuse part arrangement on fuse element sheet material
Structural representation (array 4) and the constructional appearance schematic diagram (array 5) that cylindric fuse element is rolled into by first-mentioned sheet.
The corresponding relation of reference and part is as follows：
Fuse unit 10；Fuse element 11；Protect carrier 12；Metal cap 13；Chip fuse element 14；Linking part 15；
Solder 16；Fuse element 20；First port 21；Second port 22；Open-celled structure 23；Through hole 24；Fuse part 25；Metal level 26；
Sheet material 200；First jointing edge 201；Second jointing edge 202；First encloses side 203；Second encloses side 204；First open-celled structure
23A；First through hole 24A；First fuse part 25A；Second open-celled structure 23B；Second through hole 24B；Second fuse part 25B；Protection
Carrier 30 as one kind；Metal cap 40；Cover plate portion 41；Ring wall 42；It is nested with space 43；Inserting column 44；Solder 45；Arc suppression 50.
Embodiment
For the benefit of to the understanding of the present invention, illustrated below in conjunction with drawings and Examples.
Fig. 6 to Figure 13 is referred to, the invention provides a kind of fuse element 20 in hollow cylindrical, and including described
The fuse unit of fuse element 20.
The fuse unit as shown in Figure 6 includes fuse element 20, the protection being sheathed on outside the fuse element 20
Carrier 30 as one kind and it is covered on the fuse element 20 and two metal caps 40 at the protection carrier 30 as one kind both ends.
Wherein, as shown in Fig. 6, Fig. 8, the opposite end of the fuse element 20 has been formed separately a first port 21 and
Two-port netwerk 22, the fuse element 20 offer at least one around its cylinder-like structure and arrange pore structure 23, the open-celled structure
23 include multiple through holes 24, and the narrow connecting portion between the through hole 24 of same row forms the fuse part of the fuse element 20
25。
In addition, general fuse is made up of the wire of an even thickness, fuse both ends connect and energy via with copper cap
It is enough to radiate well, and then when fuse unit works, fuse is formed the temperature point of the temperature less than medium temperature at both ends
Cloth state, and make to fuse among fuse when turn on angle is more than fuse rated current, realize the power-off protection effect of fuse.It is
So that in the embodiment of the present invention, the fuse element 20 also can make cylinder when being not provided with through hole 24 with identical principle
Shape fuse element 20 at work, forms the temperature distribution state that both ends temperature is less than medium temperature, and then in fuse element 20
Power-off protection effect is played during the fusing of centre.
However, in order that fuse element 20 plays good power-off protection effect, in the embodiment of the present invention, fuse element
At least one through hole 24 is preferably offered on 20 cylinder-like structure, more preferably multiple through holes 24, so that fuse element 20
Narrow connecting portion is formed in the opening position provided with the through hole 24, to reduce the sectional area that electric current passes through, improves the narrow company
The resistance of socket part position, electric current is played thermogenic action by the narrow connecting portion, and then ensure the narrow connecting portion structure
Into the fuse part 25 of the fuse element 20.In addition, in the embodiment provided with single through hole 24, the narrow connecting portion and through hole
Wide cut ratio can be designed according to actual use demand.
Specifically, as shown in Figure 7, Figure 8, the fuse element 20 is the cylinder-like structure being rolled into by sheet material 200, described
Material 200 has relative the first jointing edge 201 and the second jointing edge 202, first jointing edge 201 and second jointing edge
Have first to enclose when 203 and second enclose 204 between 202 to connect；The sheet material 200 is made to be rolled into the fuse element 20,
First jointing edge 201 and the fixed engagement of the second jointing edge 202, described first enclose side 203 roll surround it is described molten
The first port 21 of silk element 20, described second, which encloses side 204, rolls the second port 22 for surrounding the fuse element 20.
In the embodiment of the present invention, it is 3.14 (π) times of its diameter to consider a round circumference, therefore strip fuse
Element and degrees of expansion of the cylindrical shape fuse element in the inner chamber of fuse element 20 are identicals but by cylindrical shape c fuse elements
During 20 expansion flakiness, the width of cylindrical shape fuse element 20 will expand 3.14 (π) times of fuse element for sheet, that is, this
The ability of damming (rated current) for the hollow cylindrical fuse element 20 that invention is rolled into sheeting is identical expansion wide cut
3.14 times of strip fuse element, fuse element 20 of the present invention can improve the rated current of fuse element 20 effectively and really.
In addition, in the embodiment of the present invention, the first jointing edge 201 and second jointing edge 202 of the sheet material 200 it
Between can use arc suppression (arc quenching materials) connect, the arc suppression preferably can be silica gel, with
While 200 seam of connection sheet, in fuse element by using when can also play extinguishing arc act on.It is to be understood that described connect
Condensation material is unlimited foregoing, and the technological means of the fuse element 20 is formed can engage two jointing edges and comes under this
The protection category of invention.
Further, as shown in fig. 6, the same exhausting hole 24 of the fuse element 20 is shape and size identical hole knot
Structure, and it is same arrange pore structure 23 the width of fuse part 25 it is identical.The through hole 24 is major axis along the length of fuse element 20
The slotted eye of direction extension, and the long axis length of the through hole 24 of same row is isometric；Make distance between adjacent two through hole 24
Most short connecting portion forms the fuse part 25 of the fuse element 20.
As shown in Figure 7, Figure 8, one of specific implementation aspect of fuse element 20 of the present invention is shown, the fuse element 20 is set
There are three to arrange pore structure 23, including open-celled structure 23A is ranked first and located at described located at the one of the stage casing of fuse element 20
The two of the both ends of fuse element 20 ranked second open-celled structure 23B；Wherein, the first open-celled structure 23A is often arranged including spaced
Three first through hole 24A and three the first fuse part 25A；The second open-celled structure 23B is often arranged including spaced
Three the second through hole 24B and three the second fuse part 25B；The first through hole 24A and the second through hole 24B is all major axis
The slotted eye extended along the length direction of fuse element 20, the long axis length of the first through hole 24A are more than described second
Through hole 24B long axis length；The minor axis length of the through hole 24 of the first open-celled structure 23A and the second open-celled structure 23B
Through hole 24 minor axis length it is equal, the first fuse part 25A is identical with the width of the second fuse part 25B.It should be managed
Solution, Fig. 7, Fig. 8 are only the embodiment of one of which open-celled structure 23 of fuse element 20 of the present invention, should not be taken to be limiting this
Invention.
It should be noted that when fuse is powered, the heat for changing into electric energy due to its own resistance makes melt generate heat,
Heat caused by electric current passes through convection current and conduction etc. further through fuse element 20, protection carrier 30 as one kind to ambient radiation simultaneously
Mode distributes heat.When operating current of the fuse by permission, the heat and the caused heat that distribute reach balance, heat
Melt, which will not be accumulated in, causes the temperature of melt to raise, therefore fuse is not up to its fusing point and fused.When fuse leads to
When the electric current crossed reaches certain numerical value, the heat converted by electric energy increases, and radiating rate does not catch up with electrothermal calefactive rate, and these heats are just
It can gradually be accumulated on melt, raise melt temperature, when temperature reaches the fusing point of fuse, fuse starts to melt and continues to inhale
Receiving heat, further fusing becomes liquid, and subsequent fuse temperature forms electric arc when further rising to evaporation point, electric arc is one
Kind gas ionization electric discharge phenomena, the power of electric arc is relevant with the voltage of circuit, and voltage is higher, and electric arc is stronger, the specified electricity of fuse
The pressure main distinction is the circuit voltage difference that can be born during blown fuse, and fuse cannot be used for higher than its rated voltage
In circuit, because electric arc is not easy to extinguish when circuit voltage is higher than Fuse Voltage Rating.In addition, the power of electric arc is also and circuit
In it is current related, the more big then electric arc of electric current is stronger.If it can not simply fail to cut off circuit, may be used also in time by arc extinction
Other parts in circuit can be burnt, so as to cause fire, are caused the accident.
Therefore as shown in Fig. 9, Figure 10, Figure 11, the present invention by fuse element 20 by being configured to hollow circle tube structure
, can be by arc suppression 50 such as Fig. 9 also due to the hollow cylindrical body of fuse element 20 while to improve its rated current
It is filled in the inner chamber of fuse element 20, or such as Figure 10, Figure 11, arc suppression 50 is selectively inserted into fuse element 20
In mezzanine space between inner chamber and fuse element 20 and protection carrier 30 as one kind, to play the purpose for eliminating electric arc, ensure the present invention
The safety in utilization of fuse element 20.
As shown in Figure 12 and Figure 13, two kinds of embodiments of the metal cap 40 of fuse unit of the present invention are shown.Such as Figure 12 institutes
Show, the metal cap 40 includes capping plate portion 41, enclosed located at the ring wall 42 of the capping the week side of boss of plate portion 41 and by the capping
Plate portion 41 and the ring wall 42 enclose set to be formed be nested with space 43, the inner surface of the capping plate portion 41 by setting solder 45,
So that when metal cap 40 is placed on into fuse element 20 and protects the both ends of carrier 30 as one kind, fuse element 20 and protection carrier 30 as one kind to be welded
Fixation is connect, and fuse element 20 is electrically conducted with metal cap 40, the ring wall 42 of metal cap 40 is covered in protection carrier 30 as one kind
Outside port.
As shown in figure 13, the metal cap 40 equally includes capping plate portion 41, ring wall 42 and is nested with space 43, in this implementation
In example, also towards the space 43 that is nested with formed with inserting column 44 among the inner surface of the capping plate portion 41, to be inserted in
The both ends port of fuse element 20 is stated, with the case of without deliberately correction alignment, you can easily that fuse element 20 is fixed
In two centre positions of metal cap 40, avoid the skew of the position of fuse element 20 from being contacted with protection carrier 30 as one kind, cause heat through protection
Carrier 30 as one kind scatters and disappears, and influences the working effect and safety in utilization of fuse unit.In Figure 13 embodiment, solder 45 is set
On the inner surface of capping plate portion 41 between the ring wall 42 and inserting column 44 of metal cap 40, the metal cap 40 is made to be located at the fuse
The both ends of element 20 and the protection carrier 30 as one kind, inside the first port 21 and second port 22 of the fuse element 20 respectively with
The plugged and fixed of inserting column 44 of the metal cap 40, and the both ends port of fuse element 20 and be welded and fixed to be formed with the solder 45
Electrically conduct；The both ends port of protection carrier 30 as one kind is also welded and fixed with solder 45, and the ring wall 42 of metal cap 40 is covered in protection
Outside the port of carrier 30 as one kind.
Further, the inserting column 44 of metal cap 40 can be integrally formed in the capping of the metal cap 40 in Figure 13 embodiments
The inner surface of plate portion 41, by Figure 12 metal cap 40 by bestowing external force outside capping plate portion 41 capping plate portion 41 can be made past
It is recessed, so as to protrude to form inserting column 44 in the capping inner surface of plate portion 41.
In the fuse unit embodiment of the present invention, the fuse element 20 can be made up of the metal selected from silver or copper, or
Fuse element 20 described in person can be by being made or the fuse element passes through selected from silver/copper metal alloy that either copper/tin is formed
It is silver-plated on tin plating or copper on copper to be made.The protection carrier 30 as one kind can be by adding the material system of glass selected from ceramics or melamine
Into.
The arc suppression 50 can be selected from sand, silica gel, melamine, magnesium hydroxide, glass or its combination.The extinguishing arc
The form of material can be the material of the forms such as graininess, bar-shaped, hollow tubular, pencil or cylindrical shape.
The main view schematic appearance of cylindric fuse element 20 such as the row embodiment A that Figure 14 is shown to embodiment E is (in upright arrangement
1), end side view schematic appearance (array 2) and cylindric fuse element 20 are located at protection carrier 30 as one kind Inner Constitution fuse
The structure schematic cross-sectional view (array 3) of device, is used as each small figure embodiment using Figure 14 array English and row numeral below
In generation, claims.
As shown in figure 14, as embodiment A1 to A3 shows that internal do not fill out sets the fuse unit structure of any arc suppression
Schematic diagram.The arc suppression 50 as described in being shown embodiment B to embodiment E optionally only fill out be located at as described in fuse element 20
Inner chamber in, or in the mezzanine space being only filled between the fuse element 20 and the protection carrier 30 as one kind, or together
When be filled in the inner chamber of the fuse element 20 and in the mezzanine space.
It can be filled out in the inner chamber of the fuse element 20 and set graininess (embodiment B), bar-shaped (embodiment C, D, E) or pencil
The arc suppression of (embodiment C, D, E)；It can not fill out and disappear in the mezzanine space protected between carrier 30 as one kind and fuse element 20
Arc material (embodiment C), or fill out and set graininess (embodiment B, D), hollow tubular (embodiment E, is placed through fuse element 20
In pipe) or pencil (embodiment E, make pencil arc suppression spread be placed through in mezzanine space) arc suppression.
Wherein, granular arc suppression preferably may be selected from sand, silica gel, melamine, magnesium hydroxide or its mixture, rod
The arc suppression of the forms such as shape, hollow tubular, beam material preferably may be selected from glass, silica gel or melamine, specifically for example：Glass
Rod, double glazing pipe, glass strands, silica gel stick, hollow silica gel tube, melamine rod or hollow melamine pipe etc..
More specifically, as Figure 14, embodiment B1 to B3 show the inside of fuse element 20 and its folder with protecting carrier 30 as one kind
The schematic diagram for having set graininess arc suppression is all filled out in sheaf space.Embodiment C1 to C3 shows and only filled out inside fuse element 20
If bar-shaped or pencil arc suppression schematic diagram.Embodiment D1 to D3, which shows to fill out inside fuse element 20, sets bar-shaped or pencil
Arc suppression, and mezzanine space fills out the schematic diagram for setting graininess arc suppression between fuse element 20 and protection carrier 30 as one kind.It is real
Apply an E1 to E3 and show to fill out inside fuse element 20 and set bar-shaped or pencil arc suppression, and carried in fuse element 20 and protection
The schematic diagram for setting hollow tubular or pencil arc suppression is filled out between body 30 in mezzanine space.
In addition, as Figure 15 shows row embodiment F to the embodiment J main view schematic appearance of cylindric fuse element 20
(array 1), end side view schematic appearance (array 2) and cylindric fuse element 20 are protected located at protection carrier 30 as one kind Inner Constitution
The structure schematic cross-sectional view (array 3) of dangerous silk device, is implemented using Figure 15 array English and row numeral as each small figure below
In the generation of example, claims.
In embodiment F into embodiment J, one layer of cylindric arc suppression has separately been preset in the outer surface of fuse element 20,
Such as embodiment F3, do not filled out inside fuse unit when setting any arc suppression, the cylindric arc suppression is attached at fuse
In the outer surface of element 20 and the mezzanine space being located between fuse element 20 and protection carrier 30 as one kind.
And then as shown in figure 15, embodiment G1 to G3 shows that the outer surface of fuse element 20 is pasted with cylindric extinguishing arc
Material, and the inside of fuse element 20 and its signal that graininess arc suppression has been set with all being filled out in the mezzanine space of protection carrier 30 as one kind
Figure.Embodiment H1 to H3 shows that the outer surface of fuse element 20 is pasted with cylindric arc suppression, and in fuse element 20
Portion, which is filled out, sets bar-shaped or pencil arc suppression schematic diagram.Embodiment I1 to I3 shows that the outer surface of fuse element 20 is pasted with circle
Tubular arc suppression, and filled out inside fuse element 20 and set bar-shaped or pencil arc suppression, and carried in fuse element 20 and protection
Mezzanine space fills out the schematic diagram for setting graininess arc suppression between body 30.Embodiment J1 to J3 shows the appearance of fuse element 20
Face is pasted with cylindric arc suppression, and is filled out inside fuse element 20 and set bar-shaped or pencil arc suppression schematic diagram.
In the embodiment of the present invention, the cylindric arc suppression can be made up of silica gel or trichlorine cyanogen ammonia；Wherein, it is filled at
Arc suppression and the cylindric arc suppression inside fuse element 20 can be identical arc suppressions (embodiment J3),
It can be different arc suppression (embodiment H3).
Figure 16 shows the structure embodiment aspect schematic diagram of fuse element 20 of the present invention.As Figure 16 shows row embodiment
The structure that K is provided with metal level to the fuse part planform schematic diagram (array 1) of embodiment N fuse element, fuse part is shown
It is intended to (array 2), fuse element is provided with the structural representation (array 3) of multiple rows of fuse part, the fuse part on fuse element sheet material
Arrangement architecture schematic diagram (array 4) and the constructional appearance schematic diagram (array 5) that cylindric fuse element is rolled into by first-mentioned sheet.
Claimed below using the generation of Figure 16 array English and row numeral as each small figure embodiment.
As shown in figure 16, in the embodiment of the present invention, the through hole 24 of fuse element 20 can account for fuse element 20 for major axis and grow
Hexagon (embodiment L), the major axis for spend the ellipse (embodiment K) of more than half, symmetrically elongating account for the length of fuse element 20 about
/ 3rd ellipse (embodiment M) or capsule appearance (embodiment N).
Specifically, as shown in embodiment K1 and L1, the fuse part 25 of fuse element 20 can be by symmetrically recessed along twice
Shape fringe enclosing is formed, also can be as shown in embodiment M1 and N1, and the fuse part 25 of fuse element 20 can also be by setting through hole
24 and form more than one fuse part 25.
As shown in embodiment K2, L2, M2, N2, metal level 26 can be further set in the fuse part 25 of fuse element 20,
The material of the metal level 26 is preferably tin, reduces the fusing point of fuse part 25 whereby.Further, as shown in embodiment M1, N1,
A through hole 24 is offered on indication fuse element 20 and forms the schematic diagram of a fuse part 25, wherein, the fuse part 25
On metal level 26 be located on to connect the opposite sides of the through hole 24 in fuse part 25, from and formed on fuse element 20
Banding is easy to the position of fusing.
As shown in embodiment K, L, M and N straight trip 3,4,5, fuse element 20 can set more exhausting holes 24, such as implement
Example K3, L3, N3 two exhausting holes 24, or, such as embodiment M3 three exhausting holes 24.
The present invention is described in detail above in association with drawings and Examples, those skilled in the art can basis
Described above makes many variations example to the present invention.Thus, some details in embodiment should not form limitation of the invention,
The present invention will be used as protection scope of the present invention using the scope that appended claims define.
Claims (16)
- A kind of 1. fuse element, it is characterised in that the fuse element is configured to hollow cylindrical, the fuse element it is relative Both ends have been formed separately a first port and second port, and the fuse element is provided with through hole, and the fuse element in provided with Through hole forms narrow connecting portion to form the fuse part of the fuse element.
- 2. fuse element according to claim 1, it is characterised in that：The fuse element offers at least one around its cylinder-like structure and arranges pore structure, and the open-celled structure includes multiple logical Hole, and the narrow connecting portion between the through hole of same row forms the fuse part of the fuse element.
- 3. fuse element according to claim 1 or 2, it is characterised in that：The fuse element is the cylinder-like structure being rolled into by sheet material, and the sheet material has the first relative jointing edge and second connect Close side, between first jointing edge and second jointing edge have first enclose while and second enclose while connect；The sheet material is made to be rolled into the fuse element, first jointing edge and the second jointing edge fixed engagement, described the One, which encloses side, rolls the first port for surrounding the fuse element, and described second, which encloses side, rolls and surround the of the fuse element Two-port netwerk.
- 4. fuse element according to claim 2, it is characterised in that：The same exhausting hole of the fuse element is shape and size identical pore structure, and the same fuse part for arranging pore structure Width is identical.
- 5. the fuse element according to claim 2 or 4, it is characterised in that：The through hole is the slotted eye that major axis extends along the fuse element length direction, and the long axial length of the through hole of same row Spend isometric；The connecting portion that distance is most short between adjacent two through hole is made to form the fuse part of the fuse element.
- 6. the fuse element according to claim 2 or 4, it is characterised in that：The fuse element arranges pore structure provided with three, including located at the one of the fuse element stage casing ranked first open-celled structure with And it ranked second open-celled structure located at the two of the fuse element both ends；Wherein,First open-celled structure is often arranged including spaced three first through hole and three the first fuse part；Second open-celled structure is often arranged including spaced three the second through holes and three the second fuse part；The first through hole and the slotted eye that second through hole is all that major axis extends along the fuse element length direction, institute The long axis length for stating first through hole is more than the long axis length of second through hole；The short axle length of the through hole of first open-celled structure Degree is equal with the minor axis length of the through hole of second open-celled structure, the width of first fuse part and second fuse part It is identical.
- 7. according to the fuse element described in claim 1,2 or 4, it is characterised in that：The through hole is configured to slotted eye, circular port, hexagonal hole or capsule shape hole.
- 8. according to the fuse element described in claim 1,2 or 4, it is characterised in that：The fuse element is made up of the metal selected from silver or copper, and either the fuse element is by selected from silver/copper or copper/tin structure Into metal alloy be made, either the fuse element is made up of silver-plated on tin plating or copper on copper.
- 9. according to the fuse element described in claim 1,2 or 4, it is characterised in that：The fuse part of the fuse element is provided with tin layers.
- 10. a kind of fuse unit, it is characterised in that including fuse element as claimed in any one of claims 1-9 wherein.
- 11. fuse unit according to claim 10, it is characterised in that the fuse unit includes：The fuse element；Carrier is protected, is sheathed on outside the fuse element；Metal cap, there are two, the metal cap is respectively arranged on the both ends of the fuse element and the protection carrier, and described The both ends and the inner surface of the metal cap of the both ends of fuse element and the protection carrier are welded and fixed.
- 12. fuse unit according to claim 11, it is characterised in that：The metal cap includes capping plate portion, enclosed located at the ring wall of the capping plate portion the week side of boss and by the capping plate portion and institute State ring wall and enclose and set the space that is nested with to be formed, space is nested with described among the inner surface of the capping plate portion forms inserting column, institute The capping plate portion inner surface for stating metal cap is provided with solder；Make the metal cap located at the fuse element with it is described protection carrier both ends, the first port of the fuse element and Respectively with the inserting column grafting of the metal cap and being welded and fixed with the solder inside second port；The both ends of the protection carrier It is welded and fixed with the solder, and the ring wall of the metal cap is covered in outside the port of the protection carrier.
- 13. the fuse unit according to claim 11 or 12, it is characterised in that：Be provided with arc suppression inside the fuse unit, the arc suppression be filled at the fuse element inner chamber and/or It is filled in the mezzanine space between the fuse element and the protection carrier.
- 14. fuse unit according to claim 13, it is characterised in that：The arc suppression is selected from sand, silica gel, melamine, magnesium hydroxide, glass or its combination.
- 15. fuse unit according to claim 14, it is characterised in that：The form of the arc suppression is graininess, bar-shaped, hollow tubular, pencil or cylindrical shape.
- 16. fuse element according to claim 11, it is characterised in that：The protection carrier selected from ceramics or melamine by adding the material of glass to be made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710905396.8A CN107481902A (en) | 2017-09-29 | 2017-09-29 | Fuse unit and its fuse element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710905396.8A CN107481902A (en) | 2017-09-29 | 2017-09-29 | Fuse unit and its fuse element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107481902A true CN107481902A (en) | 2017-12-15 |
Family
ID=60604912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710905396.8A Pending CN107481902A (en) | 2017-09-29 | 2017-09-29 | Fuse unit and its fuse element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107481902A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321039A (en) * | 2018-01-26 | 2018-07-24 | 俞东 | Fuse element and preparation method thereof |
| CN110323112A (en) * | 2019-07-31 | 2019-10-11 | 厦门大恒科技有限公司 | A kind of gas discharge structure that can carry electric current and electric arc |
| CN110561801A (en) * | 2019-09-16 | 2019-12-13 | 昆山圣达保持架有限公司 | Manufacturing method of melamine fiber tube for fuse |
| CN112038205A (en) * | 2020-09-02 | 2020-12-04 | 四川天微电子股份有限公司 | High-current high-breaking fuse |
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| JP2017004634A (en) * | 2015-06-05 | 2017-01-05 | 太平洋精工株式会社 | Fuse element and built-in fuse element |
| CN205920949U (en) * | 2016-07-27 | 2017-02-01 | 东莞华恒电子有限公司 | It fuses slowly to improve welds arc extinguishing structure of formula fuse direct short -circuit in miniature |
| CN206022284U (en) * | 2016-08-31 | 2017-03-15 | 浙江银河熔断器有限公司 | A kind of fuse-link |
| CN206451677U (en) * | 2017-01-22 | 2017-08-29 | 国家电网公司 | A kind of shell of fuse |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017004634A (en) * | 2015-06-05 | 2017-01-05 | 太平洋精工株式会社 | Fuse element and built-in fuse element |
| CN205920949U (en) * | 2016-07-27 | 2017-02-01 | 东莞华恒电子有限公司 | It fuses slowly to improve welds arc extinguishing structure of formula fuse direct short -circuit in miniature |
| CN206022284U (en) * | 2016-08-31 | 2017-03-15 | 浙江银河熔断器有限公司 | A kind of fuse-link |
| CN206451677U (en) * | 2017-01-22 | 2017-08-29 | 国家电网公司 | A kind of shell of fuse |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321039A (en) * | 2018-01-26 | 2018-07-24 | 俞东 | Fuse element and preparation method thereof |
| CN108321039B (en) * | 2018-01-26 | 2020-03-17 | 俞东 | Fuse element and manufacturing method thereof |
| CN110323112A (en) * | 2019-07-31 | 2019-10-11 | 厦门大恒科技有限公司 | A kind of gas discharge structure that can carry electric current and electric arc |
| CN110323112B (en) * | 2019-07-31 | 2024-03-19 | 厦门大恒科技有限公司 | Gas discharge device capable of bearing current and electric arc |
| CN110561801A (en) * | 2019-09-16 | 2019-12-13 | 昆山圣达保持架有限公司 | Manufacturing method of melamine fiber tube for fuse |
| CN112038205A (en) * | 2020-09-02 | 2020-12-04 | 四川天微电子股份有限公司 | High-current high-breaking fuse |
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Application publication date: 20171215 |
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