EP4205157A1 - Sicherung und verfahren zur herstellung einer sicherung - Google Patents
Sicherung und verfahren zur herstellung einer sicherungInfo
- Publication number
- EP4205157A1 EP4205157A1 EP22721274.3A EP22721274A EP4205157A1 EP 4205157 A1 EP4205157 A1 EP 4205157A1 EP 22721274 A EP22721274 A EP 22721274A EP 4205157 A1 EP4205157 A1 EP 4205157A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- base body
- contact means
- fuse
- insulating housing
- fusible conductor
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000004020 conductor Substances 0.000 claims description 145
- 238000003780 insertion Methods 0.000 claims description 33
- 230000037431 insertion Effects 0.000 claims description 33
- 239000003795 chemical substances by application Substances 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 description 14
- 229910000679 solder Inorganic materials 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000004576 sand Substances 0.000 description 7
- 239000012777 electrically insulating material Substances 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/0411—Miniature fuses
-
- 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
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/0411—Miniature fuses
- H01H85/0415—Miniature fuses cartridge type
- H01H85/0417—Miniature fuses cartridge type with parallel side 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
-
- 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
- H01H85/147—Parallel-side 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
- H01H85/0241—Structural association of a fuse and another component or apparatus
- H01H2085/0275—Structural association with a printed circuit board
-
- 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
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/0411—Miniature fuses
- H01H2085/0412—Miniature fuses specially adapted for being mounted on a printed circuit board
-
- 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
- H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
- H01H85/0411—Miniature fuses
- H01H2085/0414—Surface mounted fuses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
- H01H69/02—Manufacture of fuses
-
- 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
- H01H85/165—Casings
- H01H85/175—Casings characterised by the casing shape or form
-
- 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
Definitions
- the present invention relates to a fuse, in particular an SMD fuse, with an insulating housing having a cavity, a fusible conductor arranged in the cavity of the insulating housing and contact means electrically connected to the fusible conductor for external contacting of the fuse.
- a fuse or device protection fuse within the meaning of the present invention is also referred to in the prior art as a so-called "fuse link" which can interact with a fuse holder.
- the fuse insert can be inserted into the fuse holder.
- the insulating housing is designed as an insulating body, with the external contacting of the fuse being ensured via contact means designed as contact caps.
- the contact caps are attached to the front of the insulating body.
- the fuse or the fuse link is filled with an extinguishing agent, in particular with sand, granulate and/or glass beads, in particular with the extinguishing agent being arranged in the insulating body.
- the insulating body can be designed as an insulating tube.
- the fusible conductor is introduced axially into the insulating body.
- the electrical contact between the fusible conductor and the outer contact caps attached to the insulating housing is made by a soldered connection.
- the solder connection also connects the outer contact caps to the insulating body in a materially bonded manner.
- the fusible conductor is designed to carry the full load current during operation and, in particular, to interrupt an overload current and/or short-circuit current as quickly as possible.
- SMD fuses are fuse inserts that can be mounted on the surface of printed circuit boards (SMD - Surface Mounted Device).
- SMD fuses belong to the technical field of surface mounting technology (SMT - Surface Mounted Technology).
- SMT - Surface Mounted Technology printed circuit boards are generally used as surfaces to be assembled.
- SMD fuses are special in terms of their dimensions and their electrical behavior standardized - cf. in this context DIN EN 60127-4 VDE 0820-4:2013-12 (as of April 2021).
- a disadvantage of the fuse known from the prior art is that in some fuses the fusible conductor is displaced or relocated in the insulating body during fuse manufacture—after the fusible conductor has been introduced into the insulating body. Ultimately, the fusible conductor does not remain in its intended mounting position. During assembly of the fuse, it can happen that the fusible conductor rests against the inner wall of the insulating body or strikes directly against it. With such a displacement of the fusible conductor in the insulating body, the switching behavior of the entire fuse changes and, in particular, no longer corresponds to the designed values. This is extremely disadvantageous since each fuse is designed for specific values and is used in accordance with these values. A deviation from the designed values must therefore be avoided at all costs.
- a further disadvantage of the fuse known from the prior art or the method for producing fuses known from the prior art is that the connection of the fusible conductor to the soldered connection for electrical contacting of the outer contact caps is often not sufficient for a permanent electrical connection is.
- a soldder ball a ball made of the solder material—is required in particular, but this often cannot be adequately ensured. So it happens that the solder or the solder material deviates into the space between the outer contact cap and the insulating body and thus no longer enough solder for a there is sufficient electrical connection between the fusible conductor and the outer contact caps.
- the aforementioned object is at least essentially achieved in a fuse of the type mentioned at the outset in that the insulating body has a base body that has the cavity and a cover that closes the cavity of the base body, the contact means each having an inner section electrically connected to the fuse element are arranged inside the insulating housing and each with an outer section on the outside of the insulating housing, preferably the base body.
- the base body is an open box with a base, end walls and side walls, into which the fusible conductor can be introduced in the manner according to the invention and connected to the contact means. Until the cover is put on to completely close the fuse, the fusible conductor can be connected to the contact means without further ado.
- the fusible conductor has and/or consists of an electrically conductive material.
- the insulating housing in particular has or consists of an electrically insulating material, so that the base body and the cover can also have and/or consist of an electrically insulating material.
- the contact means can abut and/or border with the outer section on the outside of the insulating body.
- the contact means can protrude or protrude with their outer sections relative to the outside of the insulating body.
- the fuse can be contacted on the outside via the contact means or via the outer sections of the contact means, with the inner section ultimately being electrically connected to the fusible conductor.
- Contact caps as required in the prior art, can be omitted in the invention.
- the invention makes it possible to avoid a complex optical and manual method of checking the fuses produced.
- the production costs of the fuse according to the invention can be reduced, preferably by at least 10%, compared to the fuses known from the prior art, in spite of the necessary contact means, due to the elimination of discarded fuses.
- the invention ensures in particular that damage cannot occur due to defective fuses.
- fuses can be provided in which it is ensured that the fusible conductor is arranged in particular axially and/or centered in the insulating housing or base body.
- the fusible conductor is preferably arranged in a stable position in the base body.
- the fusible conductor can be fixed at least indirectly by the inner sections of the contact means.
- the fusible conductor can be placed in a defined manner in the insulating housing, in particular in the base body, and also securely fixed by the contact means. Undesirable application of the fusible conductor to the inner walls of the base body or the insulating housing can be avoided.
- the fuse according to the invention can be used both as a so-called cuboid and/or square (SMD) fuse - i.e. a fuse with an at least essentially cuboid insulating body or a fuse with an at least essentially square cross-section - and as a cylindrical fuse - i.e. a fuse with an at least essentially cylindrical insulating body or a fuse with an at least essentially circular cross section.
- Cylindrical fuses can also be used as SMD fuses.
- the electrical contacting between the fusible conductor and the outer sections is achieved through the inner sections of the contact means to improve the contact means - in particular since the fusible conductor occupies a predetermined position in the insulating housing, so that in particular the application of an electrical connection means and/or a soldered connection can be carried out in a targeted and safe manner.
- the arrangement of the fusible conductor and in particular the entire manufacture of the fuse is simplified, since the fusible conductor can be arranged in the insulating housing via the cavity of the base body, in particular via an insertion opening in the cavity of the base body, and can be electrically connected to the inner sections of the contact means. Because the contact means have both an inner and an outer section, more reliable electrical contacting of the fusible conductor is ensured. It can also be avoided that an undesired placement of the fusible conductor is not recognized. In this way, the arrangement of the fusible conductor in the base body can be checked visually before the cover is inserted or before the cover is connected to the base body.
- a predetermined arrangement of the fusible conductor on the inner sections is also useful in that incorrect positioning can be reliably avoided, at least essentially.
- the fusible conductor can be arranged on and/or on a carrier means or carrier material, in particular applied and/or wound up.
- at least one glass fiber and/or a glass fiber core can be provided as the carrier means.
- the carrier means is preferably connected to the inner sections together with the fusible conductor, preferably fixed.
- the carrier means can extend over the length of the fusible conductor in some areas or completely.
- the fusible conductor preferably has a central area which is bordered by end areas.
- the end areas are the outer areas of the fusible conductor, which can include the outer ends or the outer end faces of the fusible conductor—but are not limited to these.
- the end region of the fusible conductor can correspond, for example, to at least 2%, preferably between 2% and 45%, more preferably between 3% and 10%, of the length of the fusible conductor.
- the lengths of the end areas can differ from one another.
- the fusible conductor can also be in the form of an elongated wire.
- the preferably elongate fusible conductor can be fixed in the region of its ends or in the end regions by the inner sections of the contact means.
- a section of the fusible conductor can protrude beyond the connection or fixing point on the inner sections of the contact means.
- the fixing point on the inner sections does not necessarily have to form the outer end or the outer end face of the fusible conductor.
- the fusible conductor is at least essentially stretched and/or taut between the inner sections or the fixing points.
- fixing point is understood according to the invention to mean that point at which the fusible conductor is connected to the contact means, in particular the inner section of the contact means.
- the length of the fusible conductor can exceed the length of the insulating housing, 20 in particular the length of the base body, in particular when the fusible conductor is wound onto a carrier means, or can be at least essentially the same size.
- the fusible conductor has a shorter length than the length of the insulating housing.
- the fusible conductor can preferably be arranged completely in the insulating body, it being possible for the fusible conductor to be contacted on the outside via the outer sections of the contact means.
- the insulating housing, the base body and/or the cover can have and/or consist of an electrically insulating material such as glass and/or ceramics.
- the material of the fusible conductor can be an electrically conductive material, preferably metal, and/or consist of it.
- electrically conductive material preferably metal, and/or consist of it.
- copper, nickel, steel, gold and/or silver are used as materials for the fusible conductor.
- the fusible conductor can also have a metal alloy as the material, for example a silver and/or copper alloy.
- the fusible conductor can be designed as a fusible conductor wire and/or as a fusible conductor strip. Furthermore, the fusible conductor can have an at least essentially circular and/or elliptical or an at least essentially rectangular cross section.
- the fusible conductor can be provided with constrictions, through which a faster or more sluggish overload and/or short-circuit behavior can be set.
- the constrictions can in particular be designed as cross-sectional constrictions.
- the inner section of the contact means for making electrical contact with the fusible conductor is adjacent to the cavity and/or protrudes into the cavity.
- the inner section can thus end flush with the (inner) wall of the cavity or be set back in relation to it, with accessibility for electrical contacting of the inner section being ensured, for example by snapping the fusible conductor into a corresponding opening in the (inner) wall of the body.
- the contact means is passed through the bottom and/or a wall of the insulating housing and is designed in such a way that electrical contacting and in particular a connection to the fusible conductor is possible on the outside.
- the cavity preferably has an insertion opening for inserting the fuse element.
- the insertion opening can be formed in particular on the upper side of the fuse, with the end faces and the longitudinal side of the base body forming the insertion opening.
- the fusible conductor can thus be inserted into the cavity via the top and not via the end faces.
- the fuse particularly preferably has a single insertion opening.
- the insertion opening can preferably be completely closed by the cover.
- the fusible conductor can thus first be connected to the inner sections of the contact means via the insertion opening, with the cover then being able to be put on to close the insertion opening.
- a plurality of fusible conductors is preferably provided.
- the fusible conductors are particularly preferably connected in parallel. In this context, it goes without saying that the aforementioned arrangement is provided in the insulating body or in the base body for all fusible conductors.
- the fusible conductors are electrically connected to the contact means.
- the parallel connection of at least two fusible conductors can increase the rated current, and this also results in advantageous properties when extinguishing the arc that occurs when the fuse is triggered.
- exactly two fusible conductors can be provided.
- the insertion opening is elongate, with the longitudinal extension of the insertion opening--which in particular runs along a longitudinal side and not along a front side--running in the longitudinal extension of the base body.
- the base body can preferably also be elongate.
- the longitudinal extent of the insertion opening can thus be aligned in particular at least in the longitudinal extent of the base body.
- the insertion opening preferably extends essentially over the entire length and/or width of the cavity.
- the base body can preferably have an at least essentially rectangular and/or square cross section.
- the base body is designed as a box that is open on an upper side and has a cavity on the inside.
- the base body can in particular have an open, cuboid shape on the cover side.
- the cover can be releasably or firmly connected and/or connected to the base body.
- the cover can be removed be either detachably or non-detachably or inseparably connected to the base body.
- the cover is connected to the base body after the fuse element has been inserted into the cavity.
- the cover can have corresponding locking means, in particular locking contours, for snapping in, for a form-fitting and/or friction-fitting connection with the base body.
- the base body can have complementary locking means, in particular locking contours, in particular on the edge sides provided for this purpose.
- Gluing or welding can also be provided.
- the cover rests on the base body and/or that the cover turns the base body inside out, at least in certain areas.
- the cover can turn the base body inside out, at least in some areas, at least essentially on one edge side.
- the cover enables the base body to be closed off at least essentially flush.
- the cover can thus ensure that no undesired components, such as external gases or a liquid, can penetrate into the cavity.
- the fusible conductor and the cavity are consequently protected from external influences by the cover. In particular, this ensures the correct functioning of the fuse.
- the cover is firmly connected to the base body, in particular cohesively connected, and/or that the cover can be connected to the base body in a form-fitting and/or friction-locked manner, preferably in a latchable manner.
- the cover can thus be designed in such a way that an aforementioned type of connection to the base body can be made possible.
- the cover can be latched into the base body, which ensures a simple arrangement and connection of the cover to the base body.
- the contact means is preferably guided through the base body from the outside into the interior of the insulating housing, in particular in such a way that it borders on the cavity or protrudes into it.
- the contact means can be guided through at least one side and/or end wall and/or the bottom of the base body.
- the contact means can be firmly connected to the base body or held in the base body.
- the cover is separate from the contact means and is therefore used exclusively to close the insulating body.
- the contact means is preferably only through at least one wall twistedg the base body - that is either the side walls and / or the bottom wall - but not through the cover, which can form the top of the insulating housing out. Accordingly, the cover can be formed on the outside and/or inside free of the system and/or the arrangement of the contact means.
- At least one contact means in particular both contact means, is preferably arranged at least in sections on the bottom side of the base body facing away from the cover and/or on at least one longitudinal side and/or end face of the base body. This applies both inside and outside.
- the outer section turns the base body and/or the insulating housing inside out, at least in certain areas.
- the outer section of the contact means cannot protrude from the base body and/or the insulating housing, but rather nestle against and/or rest and/or arrange on the base body and/or the insulating housing.
- the outer section of the contact means preferably protrudes by no more than twice the, in particular maximum, material thickness of the outer section relative to the outside of the insulating housing and/or the base body.
- the aforementioned arrangement of the outer sections has the advantage of simplifying the arrangement of the fuse on a printed circuit board, which makes sense when the fuse is used as an SMD fuse.
- the fuse is arranged on or on a printed circuit board.
- the outer section particularly preferably turns the base body and/or the insulating housing inside out, preferably in a corner area, in such a way that the outer section bears in particular directly on the bottom, on a front side and optionally on both long sides and/or at least one long side.
- the outer section only has to extend over part of the bottom, front and/or longitudinal side surface.
- the contact means for forming the outer section emerges from the interior of the insulating housing on the underside facing away from the cover or the bottom of the base body.
- the outer section of the contact means can thus be arranged on the underside or on the bottom of the base body.
- the inner section of the contact means ie the section arranged inside the insulating housing—preferably has an angled portion and/or a recess and/or notch in at least one area or is angled in at least one area.
- the inner section can be at least partially S-shaped or curved.
- the inner section is preferably arranged at least partially parallel to a corresponding end face of the base body.
- the end faces of the base body can be arranged on opposite sides of the base body.
- the preferably curved angled portion enables in particular better holding or fixing of the contact means on the base body and/or provides an enlarged contact surface for outside contacting on the outer section.
- the contact means is preferably designed in one piece overall. Alternatively or additionally, it can be provided that the inner and the outer section of the contact means are formed in one piece with one another and in particular at least essentially merge directly into one another.
- the inner and outer sections are made of the same material.
- the inner and the outer section are designed as separate parts, wherein the aforementioned components can be electrically connected to one another via a connecting part and are in particular made of an electrically conductive material, preferably metal.
- the inner and/or the outer section can be designed as a piece of metal, metal wire and/or metal sheet.
- the contact means in particular the outer and/or the inner section, has and/or consists of metal.
- the contact means, in particular the inner and/or the outer section, preferably has no solder and/or is designed without a solder connection.
- a contact means is arranged at least partially on opposite end faces of the base body.
- the contact means are arranged on opposite sides on the underside or the bottom of the base body.
- one end area of the fusible conductor is connected to a connection area of a contact means.
- the connection area can ensure an electrical and/or mechanical connection.
- the fusible conductor does not have to be connected to the inner sections of the contact means in the area of its front ends, in particular via a soldered connection.
- the inner section of the contact means preferably has a receptacle.
- the receptacle can be designed for the respective arrangement of an end region of the fusible conductor.
- the receptacle can be in the form of a recess and/or indentation in the inner section and in particular can be designed to correspond to the outer shape of the fusible conductor.
- the inner section and/or the seat of the inner section is designed in such a way that the fusible conductor is at least frictionally fixed, in particular clamped, in at least one end area and/or cohesively with the inner section and/or the seat of the inner section connected is.
- the fusible conductor can thus be securely fixed in particular on or in the receptacle.
- the inner section of the respective contact means can be electrically connected to the end region of the fusible conductor via a connecting means, in particular a soldered connection, a conductive adhesive connection and/or a crimped connection.
- the fusible conductor can be enclosed or stretched between two inner sections of the contact means and thus fixed in the cavity.
- the contact means can be plugged into the insulating housing, in particular into the base body.
- the contact means can be releasably connected to the insulating housing, in particular the base body. is bound. Both contact means are preferably detachably connected to the insulating housing, in particular the base body. Plugging in the contact means allows easy insertion of the inner portion of the contact means into the interior of the insulating housing.
- the contact means are firmly, preferably inseparably, connected to the insulating housing, in particular the base body.
- a firm connection between the contact means and the base body can be achieved during manufacture, in particular during the manufacture of the base body and/or the insulating body.
- the base body can be formed around the contact means, preferably by an injection molding process and/or a primary shaping process of the material of the base body.
- Plastic or plastic material of the base body is preferably processed in the injection molding process and injected in a liquefied or plasticized form, preferably under pressure—specifically to form the shape of the base body. In principle, other manufacturing processes for the base body are also possible.
- the cavity can be at least partially filled with an extinguishing agent.
- Extinguishing sand in particular quartz sand, can be provided as the extinguishing agent.
- the extinguishing agent makes it possible for an arc to be extinguished when the fuse is triggered, as a result of which the safety and/or the switching capacity and/or the switching capacity of the entire fuse is increased.
- the extinguishing agent can in particular have an extinguishing sand with a preferably defined particle size distribution, which is preferably suitable for use in the fuse link.
- an extinguishing sand with a preferably defined particle size distribution, which is preferably suitable for use in the fuse link.
- colored sands, sand and/or ceramic splinters and/or glass beads can also be used as extinguishing agents.
- the base body can have a depression, preferably in the middle.
- the depression can be arranged, for example, between the inner sections of the contact means.
- a free space can be provided under the fusible conductor.
- the fusible conductor can be arranged in the cavity on the inner sections, in particular the receptacles of the inner sections, in such a way that underneath the fusible conductor—that is, facing away from the cover—there is a free space that can be filled, for example, with an extinguishing agent, in particular extinguishing sand , At least partially, preferably completely, can be filled.
- the present invention relates to a method for producing a fuse according to one of the aforementioned embodiments, the method comprising the following method steps, which are preferably carried out in succession:
- the insulating housing can also be produced after the provision of the contact means, in particular with the base body of the insulating body being able to be formed around the contact means, for example by a plastic processing method, in particular an injection molding method. It can thus be provided that the insulating housing, in particular the base body, can already be firmly connected to the contact means during production. Ultimately, the contact means penetrate the floor and/or the walls of the base body and are accessible on the inside and outside.
- An extinguishing agent can preferably be introduced into the insulating housing, in particular into the cavity of the insulating housing, in particular after step B) and in particular before carrying out step D).
- extinguishing sand, granules and/or glass beads are provided as the extinguishing agent.
- the cavity of the insulating housing is preferably at least partially filled and/or filled with the extinguishing agent.
- the fusible conductor is preferably inserted into the cavity of the insulating housing via the insertion opening of the base body.
- the insertion opening can be elongate in the longitudinal extension of the base body.
- the length of the insertion opening is at least the length of the fusible conductor in the inserted state.
- the “length of the fusible conductor” is to be understood as meaning the length or longitudinal extent that the fusible conductor assumes when actually used—for example, the length of the carrier means. If, for example, the fusible conductor is wound up on a carrier, the length or the longitudinal extension of the fusible conductor when inserted is smaller than the length of the fusible conductor when it is extended.
- the insertion opening is designed in particular in such a way that the fusible conductor—in its form corresponding to the state of use—can be easily inserted into the cavity. In particular, the insertion opening is not formed on the front side of the base body.
- the fusible conductor can be connected to the inner section of the contact means and/or the receptacle of the inner section of the contact means with a connection means, such as a conductive adhesive and/or a soldered connection.
- a connection means such as a conductive adhesive and/or a soldered connection.
- This connection is preferably provided before step D) is carried out.
- a material connection between the inner section and the end area of the fusible conductor can thus be made possible.
- the fusible conductor is preferably firmly connected at two end regions with two contact means—that is, with two inner sections of the contact means—in particular materially, frictionally and/or positively.
- the fusible conductor can be arranged centered in the insulating housing, which is particularly advantageous for the behavior of the fuse.
- the aforementioned intervals and range limits contain any intermediate intervals and individual values and as disclosed as essential to the invention, even if these intermediate intervals and individual values are not specifically stated.
- FIG. 1 shows a schematic perspective representation of a fuse according to the invention
- FIG. 2 shows a schematic side view of the fuse shown in FIG. 1
- FIG. 3 shows a schematic side view of a cover according to the invention
- FIG. 4 shows a schematic cross-sectional view of a further embodiment of a fuse according to the invention
- FIG. 5 shows a schematic cross-sectional view of a further embodiment of a fuse according to the invention
- FIG. 6 shows a schematic plan view of a base body according to the invention with an inserted fuse element
- FIG. 7 shows a schematic perspective representation of a further embodiment of a fuse according to the invention.
- Fig. 8a is a schematic cross-sectional view of the fuse shown in Fig. 7,
- FIG. 8b shows a schematic perspective representation of a contact means according to the invention
- 9 shows a schematic cross-sectional representation of a further embodiment of a fuse according to the invention
- FIG. 10 shows a schematic cross-sectional representation of a further embodiment of a fuse according to the invention
- FIG. 11 shows a schematic cross-sectional representation of a further embodiment of a fuse according to the invention
- FIG. 12 shows a schematic cross-sectional representation of a further embodiment of a fuse according to the invention
- FIG. 13 shows a schematic representation of a method sequence according to the invention for producing a fuse.
- the fuse 1 shows a fuse 1 that can be used in particular as an SMD fuse. What is not shown is that the fuse 1 can be arranged on or on a printed circuit board and in particular can be firmly connected to the printed circuit board, preferably by means of an integral, frictional and/or form-fitting connection.
- the fuse 1 shown in FIG. 1 has an insulating housing 2 . 1 does not show that a cavity 3 is provided inside the insulating housing 2 .
- the cavity 3 can be seen from the cross-sectional view shown in FIG.
- the insulating housing 2 consists of an electrically insulating material.
- a fusible conductor 4 is arranged in the cavity 3 of the insulating housing 2 . What is not shown is that a plurality of fusible conductors 4 can be arranged in the cavity 3 .
- fusible conductors 4 are arranged in the cavity 3 .
- the fusible conductors 4 can be connected in parallel.
- the rated current can preferably be increased by connecting the fusible conductors 4 in parallel.
- the fusible conductor 4 is electrically connected to contact means 5 .
- the contact means 5, which are also shown in Fig. 1, are used for external contacting of the fuse 1 and thus enable external contacting of the fusible conductor 4 enclosed in the interior of the insulating housing 2.
- the insulating housing 2 has a base body 6 that has the cavity 3 and a cover 7 that closes the cavity 3 of the base body 6 and/or the base body 6 .
- both the cover 7 and the base body 6 are made of an electrically insulating material.
- the base body 6 can have an at least essentially elongated cuboid shape, in particular in the manner of a box, as shown in FIG. 1 .
- the corners of the base body 6 can - but do not have to - be rounded.
- the base body 6 is elongated and has a longitudinal extension L.
- the cover 7 can in particular have a longitudinal extension B, which runs in the longitudinal extension L of the base body 6 .
- the cross-sectional shape of the cover 7 can be designed to correspond to the cross-sectional shape of the base body 6 so that the cover 7 can ultimately close the base body 6 .
- FIG. 4 shows that two contact means 5 are provided.
- Each contact means 5 has an inner section 8 and an outer section 9 .
- the inner section 8 is arranged inside the insulating housing 2 .
- the inner section 8 is also guided in particular through a wall of the base body 6 .
- the inner section 8 is that section of the contact means 5 which is not arranged on the outside 10 of the base body 6 or the insulating housing 2 .
- the fusible conductor 4 is electrically connected to the inner section 8 .
- the fusible conductor 4 can be directly or indirectly mechanically connected to the inner section 8 .
- a conductive connection can also be provided between the inner section 8 and the fusible conductor 4--for example a conductive adhesive connection and/or a soldered connection.
- the contact means 5 also has the outer section 9 which is arranged on the outside 10 of the insulating housing 2 .
- the outer section 9 is arranged on the outside 10 of the base body 6 .
- the outer section 9 is preferably not arranged on the outside of the cover 7 .
- the outer section 9 is arranged on the base 11 of the base body 6 , with the base 11 being arranged on the side of the base body 6 opposite the cover 7 .
- the outer section 9 can also be arranged at least in regions on the end faces 12, 13 of the base body 6. Alternatively or additionally, it can be provided that the outer section 9 of the respective contact means 5 is arranged on the longitudinal sides 14, 15 of the base body 6 running in the longitudinal extent L.
- the base body 6 can have a bottom 11, end faces 12, 13 and longitudinal sides 14, 15 and thus have a box shape, as is shown schematically in FIG.
- Fig. 8a it is shown that the outer section 9 for contacting is arranged at least partially on the bottom 11 or projects beyond it.
- the outer section 9 for contacting is provided at least in regions on the bottom 11 and/or the end faces 12, 13 and/or the longitudinal sides 14, 15.
- the outer section 9 is adapted to the respective contacting situation and is designed in such a way that the fuse 1 can be contacted easily and securely.
- outer section 9 can also be arranged only on the longitudinal sides 14, 15.
- the contact means 5 is connected to the base body 6 in such a way that it is possible to prevent the contact means 5 from falling out or being unintentionally released from the base body 6 .
- FIG. 8a shows that the outer section 9 of the contact means 5 protrudes beyond the outside 10 of the insulating housing 2 and the base body 6.
- FIG can. What is not shown is that in further embodiments the contact means 5 with the outer section 9 can terminate flush with the outside 10 for contacting the fuse 1 on the outside.
- the outer section 9 basically enables external contacting.
- FIG. 4 shows that the inner section 8 of the contact means 5 protrudes into the cavity 3 for making electrical contact with the fusible conductor 4 .
- the inner section 8 borders on the cavity 3, as is shown schematically in FIG.
- the inner section 8 can be at least essentially flush with the inner wall of the base body 6 or set back from the inner wall of the base body 6, but still be accessible for the arrangement of the fuse element 4, which can be located, for example, in a corresponding opening in the inner wall of the Body 6 can engage.
- FIG. 4 also shows that the cavity 3 has an insertion opening 16 which is provided opposite the bottom 11 .
- the insertion opening 16 can in particular be at least essentially completely closable by the cover 7 .
- the cover 7 can be designed in one or more parts.
- FIG. 7 shows that the insertion opening 16 is elongated, with the longitudinal extension C of the insertion opening 16 running at least essentially in the direction of the longitudinal extension L of the base body 6 .
- the insertion opening 16 is not arranged on the end faces 12, 13 of the fuse 1.
- the cover 7 can be connected to the base body 6 in a detachable or fixed manner. In particular, the cover 7 can snap into the base body 6 .
- the cover 7 rests on the base body 6, with the cover 7 preferably turning the base body 6 inside out, at least in certain areas, on all edge sides.
- 9 shows that the outer section 9 rests at least partially, preferably completely, on the outside 10 of the insulating housing 2, in particular the base body 6, and/or is directly adjacent to it. 1 shows that the outer section 9 turns the base body 6 and/or the insulating housing 2 inside out, at least in certain areas.
- the outer section 9 rests directly both on the respective end faces 12, 13 and on the bottom 11.
- the outer section 9 can also bear against the longest parts 14, 14, at least in certain areas.
- the outer section 9 particularly preferably turns the base body 6 inside out in such a way that the outer section 9 is in particular directly in contact with the bottom 11 , a front side 12 or 13 and optionally with both longitudinal sides 14 , 15 .
- Such an arrangement is particularly expedient in particular for SMD fuses 1 for arrangement on a printed circuit board, not shown in detail.
- the outer section 9 bears against the floor 11 in some areas or nestles against it and is directly adjacent to it.
- the outer section 9 can only protrude or protrude by at most twice the preferred maximum material thickness or thickness of the outer section 9 in relation to the outside 10 of the base body 6 or the insulating housing 2 .
- the cover 7 can be set back in relation to the outer edge sides of the base body 6 , in particular so that a step is created, with the cover 7 continuing to cover the space 3 in particular.
- the cover 7 shown in FIGS. 1 and 2 is shown in a side view in FIG.
- the cover 7 shown in FIG. 3 can be connected to the base body 6 in a positive and/or frictional manner, preferably in a latchable manner. It is not shown that the cover 7 is integrally connected to the base body 6 .
- the cover 7 is not shown in FIGS. 4 to 12 for reasons of clarity.
- the contact means 5 shown in FIG. 4 or the two contact means 5 shown in FIG Fig. 4 illustrated embodiment of the bottom 11 - out into the interior of the insulating housing 2.
- the contact means 5 are held firmly in the base body 6 .
- the cover 7 serves exclusively to close the base body 6 , is designed without any perforations and is independent of the contact means 5 .
- FIGS. 11 and 12 A further embodiment of the fuse 1 is shown in FIGS. 11 and 12, the cover 7 not being shown in more detail for the sake of a schematic view.
- a cross-sectional view has been selected in order to show the arrangement of the contact means 5 schematically.
- the contact means 5 are guided through the end faces 12, 13 of the base body 6.
- at least one contact means 5 is guided through a longitudinal side 14, 15 of the base body 6 in further, non-illustrated embodiments. As explained above, this ultimately depends on the respective contacting situation.
- the outer section 9 of the contact means 5 bears against the bottom 11 of the base body 6 at least in sections.
- the outer sections 9 of the contact means 5 rest not only in sections on the floor 11, but also on the end faces 12, 13 and at least in one area on the longitudinal sides 14, 15.
- the contact means 5 shown in Fig. 1 it is provided that it extends over the entire length of the end faces 12, 13 and only over a smaller part of the length of the longitudinal sides 14, 15, in particular at most 40%, preferably at most 20% preferably at most 15%.
- the outer section 9 of the contact means 5 extends at least partially on the end faces 12, 13 and in particular over at least 10%, preferably at least 30%, more preferably between 30% and 90% of the length of the end faces 12, 13.
- the outer section 9 of the respective contact means 5 only extends on the underside or over the floor 11 and is preferably at least 10%, more preferably at least 20%, preferably between 20% % to 40%, the length of the floor 11 a.
- the length of the base 11 extends in the longitudinal extension L of the base body 6.
- 4 and 10 show that the contact means 5 have at least one angled portion 17 in the area of the inner section 8--that is, inside the insulating housing 2.
- the bend 17 can be bent. 10 shows that the bend 17 is designed in such a way that at least in sections an S-shaped design of the contact means 5 is formed in cross section.
- the angled portion 17 can be designed in such a way that in the area of contact with the fuse element 4, the inner section 8 of the contact means 5 is at least partially parallel to the respectively immediately adjacent wall - in the exemplary embodiments shown in Figs. 4 and 10 at least in Substantially parallel to the immediately adjacent end faces 12, 13 - is arranged.
- the bend 17 in the embodiment shown in Fig. 10 enables a widened contact surface of the outer section 9 and also a secure fixation of the contact means 5 in the base body 6, so that an undesired fall out or detachment of the contact means 5 from the base body 6 can be avoided.
- At least one angled portion 17 of the inner section 8 is therefore particularly preferably provided in the case of a positive and/or frictional connection between the contact means 5 and the base body 6 .
- the contact means 5 can also be at least essentially L-shaped in cross section, as is shown schematically in FIGS. 8 and 9, or at least essentially T-shaped, as is shown schematically in FIGS , be educated.
- the contact means 5 shown in FIG. 8b is formed at least essentially in one piece.
- the outer section 9 can be formed at least essentially in one piece with the inner section 8 .
- the inner section 8 has the same material as the outer section 9 or consists of the same material.
- the inner section 8 or the outer section 9 has or consists of metal as the material.
- the inner and outer sections 8, 9 can be designed as metal parts.
- the metal is electrically conductive in each case.
- FIG. 8 b shows that the inner section 8 has a receptacle 18 .
- the receptacle 18 can be designed as a notch and/or recess. As shown in FIG.
- the receptacle 18 serves to accommodate the fusible conductor 4 , namely an end area 19 of the fusible conductor 4 .
- the fusible conductor 4 is arranged in the receptacle 18 with its end regions 19 and the respective end face.
- FIG. 4 shows that the fusible conductor 4 protrudes at least partially beyond the receptacle 18 .
- the receptacle 18 shown in FIG. 8b can be designed in such a way that the fusible conductor 4 is at least frictionally fixed, in particular clamped, on at least one end region 19 .
- the fusible conductor 4 shown in FIGS. 11 and 12 is integrally connected to the inner section e.
- a connection means 20, in particular a solder connection and/or a conductive adhesive connection, can be provided for the integral connection of the fusible conductor 4.
- the contact means 5 shown in FIG. 10 or the contact means 5 shown in FIG. 9 are inseparable from the insulating housing 2, namely the base body 6, connected.
- This connection can be achieved during production of the base body 6 , for example by using an injection molding process to produce the base body 6 , with the contact means 5 being introduced into the material of the base body 6 .
- the contact means 5 shown in FIG. 9 is detachably connected to the base body 6 , in particular inserted into the base body 6 .
- the cavity 3 can be at least partially filled with an extinguishing agent, in particular with extinguishing sand.
- FIG. 4 shows that the base body 6 has a depression 21, preferably in the middle.
- the recess 21 can be between the inner section th 8 of the contact means 5 can be arranged.
- the depression 21 can ultimately increase the free space below the fusible conductor 4, with this free space formed being able to be filled with the extinguishing agent, for example.
- FIG. 13 a process sequence for producing a fuse 1 according to one of the preceding embodiments is shown schematically.
- the method comprises method steps A to D, which are carried out one after the other in the exemplary embodiment illustrated in FIG.
- the sequence of the method steps can certainly vary in further method sequences.
- the insulating housing 2 the fusible conductor 4 and the contact means 5 are provided.
- the insulating housing 2 is formed after the provision of the contact means 5, for example in that the base body 6 is produced around the contact means 5 by means of an injection molding process.
- the fusible conductor 4 is inserted into the cavity 3 of the base body 6 of the insulating housing 2 .
- the fusible conductor 4 is inserted into the cavity 3 via the insertion opening 16 of the base body 6 .
- the insertion opening 16 extends in the longitudinal extent L of the base body 6.
- the length of the insertion opening 16 corresponds at least to the length of the fuse element 4 in the state of use.
- the fusible conductor 4 in particular two end regions 19 of the fusible conductor 4 , are connected to the inner sections 8 of the contact means 5 .
- two inner sections 8 of two contact means 5 are provided, which can each be connected to an end region 19 of the fusible conductor 4 .
- the end area 19 can be arranged in a receptacle 18 of the inner sections 8 and connected to it in a form-fitting, friction-locking and/or material-locking manner.
- the fusible conductor 4 is clamped in at least one end area 19 .
- a connecting means 20 can be used to connect the fuse element 4 to the contact means 5, that in particular is in particular a soldered connection and/or a conductive adhesive connection.
- the end area 19 can be materially connected via the connecting means 20 in a receptacle 18 to the inner section 8 or to a part of the inner section 8 via the connecting means 20 in such a way that the fuse element 4 is securely fixed to the inner sections 8 .
- the cavity 3 of the base body 6 in particular the insertion opening 16 , is closed with the cover 7 .
- the cover 7 can be connected to the base body 6 in a detachable or fixed manner. In particular, the cover 7 can latch with the base body 6 or latch into the base body 6 .
- the contact means 5 can be plugged into the insulating housing 2, in particular the base body 6, and/or can be detachably connected to the insulating housing 2, in particular the base body 6.
- the contact means 5 it is possible for the contact means 5 to be connected, preferably inseparably, to the insulating housing 2 or the base body 6 during the manufacture of the insulating housing 2 or the base body 6 to the insulating housing 2 or the base body 6 .
- the cavity 3 can be filled with an extinguishing agent.
- the extinguishing agent can be introduced, for example, via the introduction opening 16 .
- the extinguishing agent can be introduced into the cavity 3 before or after the introduction of the fusible conductor 4, but in any case before method step D.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Fuses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021002383.8A DE102021002383A1 (de) | 2021-05-05 | 2021-05-05 | Sicherung und Verfahren zur Herstellung einer Sicherung |
PCT/EP2022/058557 WO2022233504A1 (de) | 2021-05-05 | 2022-03-31 | Sicherung und verfahren zur herstellung einer sicherung |
Publications (1)
Publication Number | Publication Date |
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EP4205157A1 true EP4205157A1 (de) | 2023-07-05 |
Family
ID=81581186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP22721274.3A Withdrawn EP4205157A1 (de) | 2021-05-05 | 2022-03-31 | Sicherung und verfahren zur herstellung einer sicherung |
Country Status (6)
Country | Link |
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US (1) | US20240013998A1 (de) |
EP (1) | EP4205157A1 (de) |
JP (1) | JP2024517036A (de) |
CN (1) | CN116368595A (de) |
DE (1) | DE102021002383A1 (de) |
WO (1) | WO2022233504A1 (de) |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5921500Y2 (ja) | 1982-03-19 | 1984-06-25 | 三王株式会社 | リ−ド付き超小型ヒュ−ズ |
US4608548A (en) * | 1985-01-04 | 1986-08-26 | Littelfuse, Inc. | Miniature fuse |
US4612529A (en) | 1985-03-25 | 1986-09-16 | Cooper Industries, Inc. | Subminiature fuse |
US4894633A (en) * | 1988-12-12 | 1990-01-16 | American Telephone And Telegraph Company | Fuse Apparatus |
JP2717076B2 (ja) * | 1995-08-30 | 1998-02-18 | エス・オー・シー株式会社 | 表面実装超小型電流ヒューズ |
DE29616063U1 (de) * | 1996-09-14 | 1996-10-31 | Wickmann-Werke GmbH, 58453 Witten | Elektrische Sicherung |
TW518626B (en) * | 2001-08-02 | 2003-01-21 | Conquer Electronics Co Ltd | Manufacturing method of micro-fuse for industry and product of the same |
US20090108980A1 (en) * | 2007-10-09 | 2009-04-30 | Littelfuse, Inc. | Fuse providing overcurrent and thermal protection |
US8629749B2 (en) * | 2010-11-30 | 2014-01-14 | Hung-Chih Chiu | Fuse assembly |
DE202012000571U1 (de) | 2011-01-21 | 2012-04-26 | HKR Seuffer Automotive GmbH & Co. KG | Elektrisches Sicherungselement |
US9824842B2 (en) * | 2015-01-22 | 2017-11-21 | Littelfuse, Inc. | Wire in air split fuse with built-in arc quencher |
WO2016145642A1 (en) | 2015-03-19 | 2016-09-22 | Cooper Technologies Company | High interrupting current subminiature fuse and method of manufacture |
US10141150B2 (en) * | 2016-02-17 | 2018-11-27 | Littelfuse, Inc. | High current one-piece fuse element and split body |
DE112016006648B4 (de) * | 2016-03-25 | 2023-08-24 | Suzhou Littelfuse Ovs Ltd. | Lötfreie sicherung zur oberflächenmontage |
US10283307B2 (en) * | 2017-04-05 | 2019-05-07 | Littelfuse, Inc. | Surface mount fuse |
JP2020507884A (ja) * | 2017-11-27 | 2020-03-12 | 功得電子工業股▲分▼有限公司Conquer Electoronics Co.,Ltd. | ヒューズにおけるヒューズ線固定構造 |
-
2021
- 2021-05-05 DE DE102021002383.8A patent/DE102021002383A1/de not_active Ceased
-
2022
- 2022-03-31 EP EP22721274.3A patent/EP4205157A1/de not_active Withdrawn
- 2022-03-31 US US18/007,301 patent/US20240013998A1/en active Pending
- 2022-03-31 JP JP2023512013A patent/JP2024517036A/ja active Pending
- 2022-03-31 WO PCT/EP2022/058557 patent/WO2022233504A1/de active Application Filing
- 2022-03-31 CN CN202280007009.8A patent/CN116368595A/zh active Pending
Also Published As
Publication number | Publication date |
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CN116368595A (zh) | 2023-06-30 |
US20240013998A1 (en) | 2024-01-11 |
JP2024517036A (ja) | 2024-04-19 |
DE102021002383A1 (de) | 2022-11-10 |
WO2022233504A1 (de) | 2022-11-10 |
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