DE102010046840B4 - Flat fuse and fuse carrier - Google Patents

Abstract

Blade fuse (40) comprising:
a fuse link (42) of electrically conductive material and a housing (41) of electrically non-conductive material which at least partially surrounds the fuse link (42),
wherein the fuse link (42) has exactly three contact tongues (43, 44a, 44b), namely a first contact tongue (43), a second contact tongue (44a) and a third contact tongue (44b), wherein the contact tongues (43, 44a, 44b) protrude from the same side of the housing (41) and extend in a common plane and the first contact tongue (43) is arranged between the second contact tongue (44a) and the third contact tongue (44b),
wherein the fuse link (42) has a first fuse portion (45a) and a second fuse portion (45b), the first fuse portion (45a) electrically connecting the first contact tab (43) to the second contact tab (44a) and the second fuse portion (45b ) electrically conductively connects the first contact tongue (43) to the third contact tongue (44b),
characterized in that
the first contact tongue (43) is wider than the second and third contact tongues (44a, 44b).

Description

The invention relates to a system comprising a, in particular three-pole flat fuse and a fuse carrier. The system is preferably adapted for use in a vehicle, in particular a motor vehicle. The system may or may not be inserted in a fuse box of or for a motor vehicle.

So-called ATO fuses to ISO 8820-3: 2010 Form C are known from the prior art, which can be plugged into a fuse carrier of a motor vehicle. Such ATO fuses have a flat housing into which a fuse-link stamped from a plate-shaped material is inserted, the fuse link having two contact tongues projecting from the housing and a fuse section located in the housing, the fuse section electrically connecting the contact tongues. If an inadmissibly high power flows through the fuse, part of the fuse section burns, causing the fuse to open the circuit. For each fusion section a fuse is provided. As the number of electrical consumers in modern motor vehicles increases, so does the number of fuses required. Consequently, multiple fuses also require more space, with space in motor vehicles being in short supply. To address this problem, so-called miniature fuses have been developed to ISO 8820-3: 2010 Form F, which are smaller in size, allowing more fuses to be placed in the same space.

Other ways to accommodate multiple melting sections on the same space, are in the publications EP 1 211 709 A2 . EP 0 967 627 B1 . DE 10 2008 049 101 A1 and JP 07 105 826 A disclosed. Fuses are shown which have more than two contact tongues and at least two fusion sections. These fuses are, however, custom-made, which differ significantly from the dimensions of known ATO fuses, whereby the fuses provided for the fuses have complicated geometries and require a lot of space.

The DE 10 2009 004 444 A1 . US 6,007,350 A . JP 07 105 826 A . US 2002/0024414 A1 . DE 10 2008 049 101 A1 and EP 0 967 627 B1 show flat fuses, which have at least three contact tongues. The flat fuse from the DE 10 2009 004 444 A1 includes an insulating housing and a stamped metallic insert disposed in the insulating housing. The insert forms three terminals, wherein the middle terminal is connected in each case via a fuse element with the two outer terminals. Each terminal forms a protruding from the housing contact tongue, wherein the contact tongues are the same width.

The US 4,772,759 A . DE 692 14 493 T2 and DE 203 16 994 U1 describe fuse carrier for receiving two contact tongues having flat fuses. The US 4,772,759 A and the DE 692 14 493 T2 show rod-shaped locking means which can be inserted into the fuse carrier. The US 6,007,350 A discloses a fuse carrier for receiving a fuse with more than two contact tongues.

It is therefore an object of the invention to provide a space-saving flat fuse, which preferably has a design that requires only minor changes to the dimension of a conventional ATO fuse or a flat fuse according to ISO 8820-3: 2010 Form C, E or F. Another object is to provide a compact-built fuse carrier for such a flat fuse.

The objects are achieved by the subject matters of the independent claims. Advantageous developments emerge from the dependent claims, the description and the figures.

In a first aspect, the invention relates to an electrical blade fuse, in particular plug-in blade fuse for use in a vehicle, in particular a motor vehicle, and for securing a circuit. The flat fuse comprises a fuse link made of an electrically conductive material, in particular metal, and a housing made of electrically non-conductive material, which encloses the fuse link at least partially. The fuse link can be made of a plate-shaped semi-finished product such. B. punched out of a metal sheet. For example, the metal may be zinc or a zinc based alloy. The fuse link is preferably in one piece. The preferably flat housing may have a greater width than thickness or length.

The fuse link comprises a first contact tongue, a second contact tongue and a third contact tongue. The particular flat contact tongues can be arranged in a common plane. That is to say, in particular, that the contact tongues which are thin in relation to their length and width can be arranged with their length and width parallel to and in the common plane. The thickness of the reeds may be less than 1.5 or 1 mm. The thickness may for example be between 0.5 to 1 mm. The first, second and third contact tongues, in particular all the contact tongues of the fuse link, preferably protrude in parallel from a same side of the housing to each other. The contact tongues can protrude equidistant from the housing. Incidentally, the fuse link is enclosed by the housing, so that only the contact tongues of the fuse link are arranged outside the housing. The contact tongues may protrude, for example, up to 15 or 20 mm, preferably between 5 and 15 or 5 and 10 mm from the housing.

The fuse link further includes a first fuse portion and a second fuse portion, wherein the fuse portion electrically conductively connects the first contact tongue to the second contact tongue and the second fuse portion electrically conductively connects the first contact tongue to the third contact tongue. In particular, the first melting section and the second melting section can branch off from one another independently of the first contact tongue. Advantageously, current can be supplied to the blade fuse at the first contact tongue and removed from the blade fuse at the second and third contact tongues. The first melting section can burn independently of the second melting section, and vice versa.

The fuse is preferably designed for use at rated voltages in the low voltage range, in particular less than 100 V, such as. B. 58, 32, 24, 12 or 6 V.

The first contact tongue is wider than the second and third contact tongue. Since it is preferred to introduce the current via the first contact tongue to the flat fuse, it is advantageous to design the first contact tongue so that it can withstand a higher electrical power than the second or third contact tongue. The broader first contact tongue reduces the heat development in the flat fuse. Since the second and third contact tongues are narrower than the first contact tongue, the flat fuse can be kept small in width. If all contact tongues had the same width, either the first contact tongue would be undersized or the second and third contact tongue would be oversized, which would result in either a high level of heat generation or a space-consuming design.

In preferred embodiments, at least one of the second and third contact tongues may be arranged next to or directly adjacent to the first contact tongue. The first contact tongue is arranged between the second and third contact tongue.

The first melting section and the second melting section are preferably flat and / or flat, and in particular may be arranged completely in the same plane as the contact tongues. This allows a very compact, d. H. flat design of the fuse.

The first and / or second melting section may be approximately the same thickness as the contact tongues or may be thinner than the contact tongues. The melting sections can, for. B. have different metallurgical properties than the contact tongues. This can be z. B. be achieved in that the semi-finished product from which the fuse link is punched, removed at the intended location for the melting sections and optionally filled with another metal or metal alloy. The removal can z. B. done by grinding or milling.

In particular, the section which is very thin compared to the width of the contact tongues is referred to as the melting section. When the melting section burns, it is not necessary for the entire melting section to melt but only a part thereof.

Preferably, at least one of the first and second melting section forms the end of the fuse link opposite the projecting end of the fuse link. The first and / or second fusing portion may open to the end or end face of the first contact tongue, which is opposite to the projecting end of the first contact tongue. The first melting portion may open to the end or the end face of the second contact tongue, which (s) the projecting end of the second contact tongue is opposite. The second fusion portion may open to the end or the end face of the third contact tongue, which is opposite to the projecting end of the third contact tongue. In this way, the contact tongues can be closer, that is, arranged at a smaller distance from each other, whereby the width of the flat fuse can be kept low. At the same time, there is sufficient room to match the geometry of the fusion section to obtain the desired melting properties for the fusion section.

Alternatively and preferably, the first contact tongue can form the end of the fuse link opposite the projecting end. Alternatively or additionally, the first melting section and / or the second melting section can open on at least one longitudinal side of the first contact tongue. In particular, the first melting section to a first, z. B. facing the second contact tongue longitudinal side and the second melting section to a second, the first opposite, z. B. which open to the third contact tongue longitudinal side. The first fusion portion may open to the end or the end face of the second contact tongue, which is opposite to the projecting end of the second contact tongue. The second fusion portion may open to the end or the end face of the third contact tongue, which is opposite to the projecting end of the third contact tongue.

Further alternatively and preferably, at least one of the second and third contact tongues may form the end of the fuse link opposite the projecting end. Alternatively or additionally, the first and / or second melting portion may open at the end or end face of the first contact tongue, which is opposite to the projecting end of the first contact tongue. In particular, the first melting section to a, z. B. pointing to the first contact tongue longitudinal side of the second contact tongue and / or the second melting section to a, z. B. which open to the first contact tongue longitudinal side of the third contact tongue.

The alternatives also allow the contact tongues to be arranged close to each other and room for the adaptation of the geometry of the melting sections.

The fuse link is preferably mounted in the region of the contact tongues on the housing, which is arranged between the first or second melting section and the part of the contact tongue arranged outside the housing. For example, the first, second and third contact tabs may each have a recess into which the housing engages positively, such. B. a hole or a notch. The fuse link may be snapped in the housing or the housing may, for. B. thermally deformed to engage in the recess. For a snap, the housing may have a snap-action nose, which engages in the recess when inserting the fuse-link into the housing.

The fuse link can be inserted into or from the side of the housing from which the contact tongues protrude, or inserted into the housing from the side opposite to the side from which the contact tongues protrude. By inserting the fuse link over the side opposite to the side from which the contact tongues protrude, it is possible in a particularly simple way to avoid damaging the melting sections during assembly. By inserting the fuse link on the side from which protrude the contact tongues, the opposite side of the housing can be closed in particular with a lid integrally formed on the housing. The lid can during molding, such. B. mitgeformt in injection molding of the housing. As a result, a separate lid can be saved, which fewer parts must be handled during assembly of the fuse.

The housing may have on the corresponding side a slot-shaped opening through which the fuse insert is inserted, in particular inserted or was. The housing or the part of the housing which surrounds or laterally surrounds the fuse insert, in particular the melting sections, is preferably in one piece. In contrast to flat fuses, which have two side of the fuse housing arranged housing halves, which surround the fuse link and which are material or positively connected during assembly, allows a one piece, molded in particular by molding or injection molding housing part, which encloses the fuse side that at the assembly of fewer parts must be handled. Since the flat fuses are mass products, this can save considerable costs.

The housing may have counter stops against which abut one or more stops formed on the fuse link or the contact tongues during insertion, whereby a defined position with respect to the housing is specified for the fuse link. Generally, at least one of first, second and third contact tongues may have a stop in the direction of insertion into which the fuse link is inserted into the housing, and the housing for the or each stop may have a corresponding counterpart stop. In particular, the first and / or the second and the third contact tongue can each have a stop which is arranged on the longitudinal side or on the end face opposite the projecting end. The stop may be arranged on the longitudinal side of the second and / or third contact tongue pointing to or from the first contact tongue or on the longitudinal side or sides of the first contact tongue.

Generally, the contact tongues can be approximately the same length. The length is composed of the part located in the housing and the protruding from the housing part of the contact tongue. Alternatively, the first contact tongue may be longer than the second and third contact tongue. This is particularly advantageous when the end face of the first contact tongue forms the stop or when the melting sections open onto the longitudinal side of the first contact tongue. Alternatively, the second contact tongue and the third contact tongue may be longer than the first contact tongue. This is particularly advantageous when the end faces of the second and third contact tongues each form a stop or when the melting sections open onto the longitudinal side of the second and third contact tongues.

The housing may, in preferred embodiments, be transparent or have openings whereby the first and second fused portions are inspectable. Thus it can be visually determined whether one of the melting sections has burned out. In particularly preferred embodiments, the first melting section and the second melting section are arranged in the housing so that they can be inspected over that side of the housing which is opposite to the side from which the contact tongues protrude. Fuses, such as B. in the EP 0 967 627 B1 are indicated, do not allow an inspection of this site, so that these fuses for inspection must be removed from the fuse carrier. In the advantageous development of the flat fuse does not necessarily need to be removed from the fuse carrier to determine whether one of the melting sections is burned.

In particular, the housing may be open or closed on the side opposite the side from which the contact tongues protrude. In particular, this side or the opening may be closed by means of a lid attached to the housing part which laterally encloses the fuse link or the fuse link. The lid can z. B. with the housing or the housing part form-fit, in particular snapped, or cohesively, in particular glued or welded, connected or, as described above, be formed on the housing. The lid and / or the housing are particularly preferably formed of a transparent material, which allows the inspection of the melting sections. Furthermore, the lid or the housing may be an indication of the properties of one or more fusion sections, such. For example, a color coding or an indication consisting of characters.

The lid may form the counter stop for the stop, in particular the front side of the first contact tongue or the second and third contact tongue. This is particularly advantageous when the lid is molded integrally from the housing.

In extension of the contact tongues, the cover per contact tongue may have a separate opening, which advantageously makes it possible with contact pins of a measuring device z. B. to determine the electrical resistance between the first and the second or the first and the third contact tongue. The housing may have a length in Abragungsrichtung the contact tongues, the z. B. is less than 28 mm, preferably less than 15 mm. Preferably, the length is smaller than the width of the housing transversely to the Abragungsrichtung the contact blades and greater than the thickness of the housing transverse to the Abragungsrichtung. Preferably, the width of the housing is larger, in particular at least a factor of 2.5 or 3 greater than the thickness. The thickness may be less than 12 mm or between 2.5 and 12 and the width may be less than 36 mm or between 9 and 36 mm.

Due to the compact design of the fuse and several melting sections per fuse, the number of melting sections can be increased with the same space, especially doubling.

In a further aspect, the invention is based on a fuse carrier, in particular for use in a motor vehicle. The fuse carrier comprises at least a first receiving compartment, which is adapted to receive at least one current bridge. For example, a single storage compartment or two first storage compartments may be provided. In the at least one first receiving compartment, a current bridge may or may not be arranged, as will be described below. The current bridge may have a plurality of contact leg pairs, which are electrically connected and fed via a feed line.

The fuse carrier comprises at least a second receiving compartment, which is adapted to receive a single contact and at least a third receiving compartment, which is also adapted to receive a further single contact. A single contact may have a single pair of contact legs, with an electrical line, such. B. connected to a cable that leads to a consumer. In each case a single individual contact can be arranged in the second and / or third receiving compartment. Preferably, the fuse carrier comprises a plurality of second receiving compartments and a plurality of third receiving compartments.

The fuse carrier further comprises at least one slot which is configured such that it can receive a flat fuse, in particular a flat fuse as described herein. Preferably, the fuse carrier has a plurality of such slots, wherein a flat fuse can be arranged in each of these slots.

Each slot is assigned at least a part of the first receiving compartment, one of the at least one second receiving compartment and one of the at least third receiving compartment. The slots associated with the slot are located below the slot or in alignment with the slot. If individual contacts are arranged in the second and third receiving compartments and a current bridge is disposed in the first receiving compartment, three pairs of contact legs are located at each of the slots, namely two individual contact leg pairs and one contact leg pair of the current bridge.

Since the fuse carrier is designed for receiving a fuse with three contact tongues, exactly three contact leg pairs are provided per slot.

The at least one slot may be disposed on a first side of the fuse carrier opposite to a second side. The fuse carrier can be designed so that from the second side of the current bridge in the first receptacle and the individual contacts in the second and third receptacle are pluggable. The current bridge and the individual contacts are each plugged into the respective receiving compartments with their contact leg pairs ahead. This ensures that the contact leg pairs are arranged on the lying on the first side slot.

If a blade fuse is plugged into the slot, the first contact tongue between the legs of a pair of contact legs of the current bridge, the second contact tongue between the contact legs of the pair of contact leg arranged in the second receptacle individual contact and the third contact tongue between the contact legs of the contact leg pair of arranged in the third receptacle Single contact plugged. The fuse carrier can be integrated into the electrical system of a motor vehicle such that the current bridge is connected to a voltage source, wherein current can be branched to two different individual contacts by means of the flat fuse, wherein the individual contacts are electrically connected to different consumers.

The first receiving compartment is arranged between the second and third receiving compartment. As a result, flat fuses can be integrated into the fuse carrier, the first contact tongue between the second and third contact tongue is arranged.

The first receiving compartment may be elongate, in particular slot-shaped. The slot is preferably configured such that the flat fuse arranged in the slot is arranged transversely, in particular perpendicular to the first receiving compartment or the current bridge. Thus, preferably, the slot be configured elongated, wherein the slot can be arranged transversely to the first receiving compartment or the current bridge.

The at least one slot can be adapted to the plug fuse, in particular its thickness and / or width, so that the plug fuse, in particular on its housing, is guided. Accordingly, the fuse carrier may have guides for the at least one slot. The slot is preferably designed so that it can accommodate a fuse plug whose housing, for example, have a width of 17-22 mm and / or a thickness of 2.5-6 mm or another dimension mentioned herein.

The fuse carrier comprises in preferred embodiments a locking device, in particular a so-called secondary locking. The secondary locking serves to reliably prevent removal of the individual contacts, which are secured, for example, with a primary locking mechanism, from the second and / or third compartment. If the individual contacts are arranged in the respective receiving compartment, they can be provisionally secured against being pulled out by means of a primary lock acting between the receiving compartment and the individual contact, which is formed, for example, as an elastic snapper on the receiving compartment or the individual contact. However, there is a risk that the individual contacts can still be pulled out of the receiving compartment when exerting an increased tensile force. The primary lock thus serves primarily as an assembly aid. The individual contacts are finally secured with the secondary interlock.

The locking device comprises a locking member for the at least one second receiving compartment, preferably for each second receiving compartment a locking member, and / or a locking member for the at least one third receiving compartment, preferably for each third receiving compartment a locking member. The locking device is movable from a release position in which the at least one locking member is arranged on or at, but not in its associated receiving compartment in a locking position in which the locking member is arranged in the receiving compartment associated therewith. The locking member may protrude in the locking position in its associated receiving compartment and reduce the cross section of the receiving compartment so that it prevents withdrawal of the individual contact from the receiving compartment. For example, a plurality of second receiving compartments may be provided, which are lined up along the first receiving compartment and spaced from each other with a latching measure. The locking device may have a plurality of locking members, which are arranged in a row and spaced with the latching measure. When moving the locking device from the release position into the locking position, preferably by half the catch, the locking members are moved into their associated second receiving compartments, where they get into locking engagement with the individual contacts. The same applies to the third storage compartments accordingly.

The at least one locking member may be disposed on a leg which extends in the direction in which the first and / or second receiving compartments are lined up. The fuse carrier may have a guide in which the locking device, in particular the leg of the locking device is linearly guided.

The fuse carrier can be configured so that the locking device axially locked in the locking position, whereby a movement of the locking device from the locking position is prevented in the release position.

In preferred embodiments, the fuse carrier may comprise a locking device for the at least one second receiving compartment and a locking device for the at least one third receiving compartment. The locking devices can be moved independently of each other. As a result, the at least one locking member for the at least one second receiving compartment can be moved independently of the at least one locking member for the at least one third receiving compartment into its associated receiving compartment, or / and vice versa.

In alternative, particularly preferred embodiments, the at least one locking member for the at least one second receiving compartment and the at least one locking member for the at least one third receiving compartment are formed on the locking device such that the locking members are movable together when the locking device from the release position to the locking position is moved. In particular, the at least one locking member for the at least one second receiving compartment and the at least one locking member for the at least one third receiving compartment axially fixed, such. B. by means of an integrally formed locking device.

Preferably, the first receiving compartment is arranged between the guide for the locking device for the at least one second receiving compartment and the guide for the locking device for the at least one third receiving compartment. The guide for the locking device for the at least one second receiving compartment is preferably arranged between the at least one second and the at least one first receiving compartment. For example, the locking device for the at least one third receiving compartment is arranged between the at least one first receiving compartment and the at least one third receiving compartment.

Another aspect of the invention relates to a fuse box or for a motor vehicle, wherein in the fuse box a plurality of fuse carriers, each having at least one slot for a fuse, are arranged. Of the fuse carriers, at least one fuse carrier is configured as described herein. At least one flat fuse described herein can be arranged or arranged at the slot of the fuse carrier described herein.

The fuse carrier can, for. B. be designed so that it can be snapped form-fitting with the fuse box.

A preferred current bridge comprises, as stated, at least one pair of contact legs, preferably a plurality of pairs of contact legs, the pair of contact legs having a first contact leg and a second contact leg. Between the contact legs, a contact slot for receiving a contact tongue to be connected, for example a flat fuse, is preferably formed. The contact legs are in particular designed so that the contact legs can pinch the contact tongue.

In principle, such a busbar in a fuse carrier, as he z. As described herein, are used.

The contact leg pair is associated with a connecting portion which connects the first contact leg and the second contact leg and protrude from which the first contact leg and the second contact leg. The connecting portion has a surface which is preferably arranged between the first and second contact legs. Preferably, the surface forms the end of the contact slot. This surface or end face may be a cut surface, the z. B. was produced during punching out of the current bridge from a plate-shaped semifinished product.

The current bridge can have a fastening device for a flexible conductor, in particular a crimp neck or a welding region, with which the flexible conductor can be fastened to the current bridge. For example, the conductor of a cable may or may not be welded to the power bridge. The fastening device may be formed integrally on the current bridge. Generally preferred, the current bridge is in one piece.

The flat fuse according to the invention and the fuse carrier, in which the flat fuse according to the invention is arranged, have been described with reference to several preferred embodiments. In the following, a particularly preferred embodiment of the blade fuse and a particular preferred embodiment of the fuse carrier described as part of a preferred assembly with reference to figures. The features disclosed herein alone and in combination with the aforementioned features, the subject of the invention advantageously further. Show it:

1 an exploded view of a preferred system,

2 a preferred designed current bridge,

3 an advantageously designed fuse carrier,

4 an exploded view of a preferred designed flat fuse, and

5 a fuse carrier with a flat fuse arranged therein.

In 5 becomes a fuse carrier 30 shown several, in this example twelve slots 37 for each one flat fuse 40 having. In 5 is an example of a fuse 40 in a slot 37 plugged. The slots 37 are arranged in a row. The slots 37 each have guides in which the blade fuse 40 is guided and edged. The guides are formed by the preferably made of plastic housing 31 of the fuse carrier 30 educated. Neighboring slots 37 are spaced with a ratchet r. The Rastmaß can z. B. 7 to 10 mm. The locking measure can be at least smaller than the thickness of the housing 41 the fuse 40 ,

In 1 become individual parts of the fuse carrier 30 and a composite flat fuse 40 , which is designed as a plug-in fuse shown.

The housing 31 of the fuse carrier 30 has on its top ( 5 ) the slots 37 on it, wherein it at its top side opposite arranged bottom ( 1 and 3 ) two first, slot-shaped receiving compartments 32 has, in each case one of two current bridges 10 be arranged so that their contact leg pairs 19 ( 2 ) are aligned with each other. The housing 31 has snap-action devices (not shown) which are in the first compartment 32 arranged current bridge 10 latch, so the current bridge 10 stuck in the first compartment 32 sits and is blocked against removal.

The fuse carrier 30 or its housing 31 forms several, in the example shown, twelve second storage compartments 33a along the at least one first slot-shaped receiving compartment 32 are arranged. The second storage compartments 33a are spaced apart with the ratchet r, ie adjacent receiving compartments 33a are spaced with the ratchet r. The fuse carrier 30 or its housing 31 has several, in this example, twelve third storage compartments 33b on, with the ratchet r strung together along the at least one first receiving compartment 32 are arranged. Between the series 35 the second storage compartments 33a and the series 36 the third storage compartment 33b ( 3 ) are the first two storage compartments 32 and the power bridges 10 arranged. Each second storage compartment 33a There is a third storage compartment 33b across from.

The second storage compartments 33a and the third storage compartments 33b are adapted to receive a single contact each (not shown). A single contact connects the fuse carrier with a consumer z. B. via a cable. The individual contact can z. B. a pair of contact legs 19 having a contact slot 11 for receiving a contact tongue 44a . 44b the fuse 40 forms.

Adjacent second storage compartments 33a be over a footbridge 34 separated. The same applies to adjacent third storage compartments 33b ,

The second storage compartments 33a and the third storage compartments 33b are designed so that the individual contacts with their contact legs ahead of the underside of the fuse carrier 30 in the respective storage compartment 33a . 33b are pluggable.

Second and third storage compartments 33a . 33b may comprise a primary latch, which is a removal of a single contact from its receiving compartment 33a . 33b at least complicated or prevented. A primary lock can z. B. have a flexible snapper of the housing 31 or one of the housing 31 formed footbridge 34 is formed, and locked with the individual contact or engages behind the individual contact. Alternatively, the snapper may be formed by the single contact associated with the housing 41 locked.

Each of the slots 37 ( 5 ) is a part of the at least one first receiving compartment 32 or a pair of contact legs 19 ( 2 ) of the current bridge 10 , and a second storage compartment 33a or the individual contact arranged therein and a third receiving compartment 33b or the individual contact arranged therein.

If the fuse 40 in the slot 37 is plugged in, contacts a first contact tongue 43 a pair of contact legs 19 the current bridge 10 , whereby over the first contact tongue 43 the fuse 40 Power can be supplied. The second and third contact tongue 44a . 44b contact one each Single contact, which over the second contact tongue 44a and the third contact tongue 44b Power from the fuse 40 is dissipatable to a consumer.

The fuse carrier 30 in particular has a secondary lock 20 on which a first locking leg 22 and a second locking leg 23 comprising, in one piece and axially fixed to each other via a pressure piece 21 are connected. The secondary lock 20 is preferably also made of plastic. The first locking leg 22 and the second locking leg 23 have several, in this example in each case twelve locking members 24 on, the side of the first locking leg 22 or the second locking leg 23 protrude. The locking members 24 are strung together and spaced from each other with the ratchet r.

The fuse carrier 30 has a guide (not shown) to which the secondary latch 20 can be slidably arranged for displacement along its leg direction. Before the individual contacts in the second and third storage compartments 33a . 33b be plugged, the secondary lock in the housing 31 of the fuse carrier 30 arranged in a release position. In the release position, the locking members are on or at, but not in its associated receiving compartment 33a . 33b arranged. For example, the locking members 24 based on the direction of displacement between adjacent storage compartments 33a . 33b or at the level of the bridges 34 be arranged. After the individual contacts in the receiving compartments 33a . 33b are plugged, the secondary lock 20 shifted into its locking position, in which the locking member 34 in the receptacle associated with it 33a . 33b is arranged, where it engages in or on the individual contact, that the individual contact except by destruction no longer out of the receptacle 33a . 33b can be pulled out. Preferably, the path is the secondary lock 20 in the movement from the release position into the locking position is displaceable, in about half of the ratchet r.

secondary lock 20 and fuse carrier 30 or housing 31 are designed so that the secondary lock 20 positively connected in the locking position, such. B. are snapped to a movement of the secondary latch 20 back to the release position. The power bridges 10 are between the first and second locking legs 22 . 23 arranged.

The housing 31 of the fuse carrier 30 has at least one fastening device with which it can be attached in a fuse box for receiving a plurality of fuse carrier, in particular positively secured or snapped. In this case, the fastening device 38 several snap-on lugs, which engage in the fuse box.

Referring to 2 now becomes a preferred current bridge 10 for the fuse carrier 30 described. The electricity bridge 10 is from a plate-shaped semi-finished, such. B. a metal sheet formed by stamping and forming. The electricity bridge 10 has a flat distribution rail 14 on, at which a fastening device in the form of a crimping approach 15 is shaped for a cable. On the crimp neck 15 opposite side has the current bridge 10 several, in this example six pairs of contact legs 19 , on.

By way of example, one of these contact leg pairs 19 described. The contact leg pair 19 has a first contact leg 19a and a second contact leg 19b on. The first contact leg 19a and the second contact leg 19b protrude from the connecting rail 14 or the connecting section 14a from. The first and second contact legs 19a . 19b have free ends which the free end of the contact leg pair 19 form.

The first contact leg 19a has a first contact section 19c and the second contact leg 19b has a second contact section 19d on. The contact legs 19a . 19b or the contact sections 19d . 19c can be parallel to each other. The first contact section 19c and the second contact portion 19d are arranged in a common plane. Between the first contact leg 19a and the second contact leg 19b is a contact slot 11 formed in the region of the contact sections 19c . 19d has a smaller slot width s ₃ than a slot width s ₁ in the area between the contact portions 19c . 19d and the connection section 14a , The slot width s ₃ is preferably smaller than the thickness of the male contact tongue 43 the fuse 40 ,

The as in the direction of contact slot 11 facing surface formed connecting portion 14a limited frontally between the first contact leg 19a and the second contact leg 19b formed contact slot 11 ,

The contact legs 19a . 19b of the contact leg pair 19 have a reshaped section 16 . 17 . 18 on, which causes the contact leg pair 19 associated connection section 14a outside the plane in which the first contact section 19c and the second contact portion 19d are arranged. The in 2 shown parallel offset between the contact portions 19c . 19d and the connection section 14a or the busbar 14 is achieved by a on the first contact leg 19a and the second contact leg 19b formed first bending edge 17 around which the first and second contact legs 19a . 19b are bent in a first direction and a second bending edge 18 around which the first and second contact legs 19a . 19b are bent in a second, the first bending direction opposite bending direction by the same angular amount. Between the first bending edge 17 and the second bending edge 18 is an angular portion, which may be either straight or bent, arranged.

Due to this parallel offset, the connection section formed as a surface appears 14a no longer in the projection of the area 13 the contact slot 11 when from the free end of the contact leg pair 19 forth and in the plane of the contact sections 19c . 19d in the contact slot 11 . 13 is looked. As a result, the slot width s ₃ can be determined optically without errors.

The contact legs 19a . 19b a contact leg pair 19 in this example are mirrored with respect to the contact slot 11 arranged.

The first contact section 19c and the second contact portion 19d each have a local injection on their front and back surfaces 19g transverse to the plane in which the first and second contact sections 19c . 19d are located. The local injection 19g is bag-shaped, especially banana-shaped, ie oblong and curved. The side wall of the pocket-shaped pressfit 19g has a closed contour, so that the thickness of the contact surfaces, which the contact slot 11 in the area 13 border, compared to the thickness of the contact section 19c . 19d outside the pressings 19g is not reduced or stays the same.

The local pressings 19g cause a narrowing of the contact slot 11 in the area 13 ,

The first contact leg 19a and the second contact leg 19b point between the reshaped section 16 . 17 . 18 ie the bending edge 17 and the busbar 14 an intermediate section 19e . 19f on, with the intermediate sections 19e . 19f in a common plane, especially with the busbar 14 lie and are offset parallel to the plane in which the first contact portion 19c and the second contact portion 19d lie.

Between adjacent contact leg pairs 19 is a neighbor slot 12 arranged, which preferably has an equal or greater or smaller slot width 52 has as the contact slot 11 , The slot depth t _{2 of} the neighboring slot 12 is greater than the slot depth t _{1 of} the contact slot 11 , This will pass through the reshaped section 16 . 17 . 18 impaired spring property of the contact legs 19a . 19b improved.

The contact slots 11 adjacent contact leg pairs 19 are spaced with the ratchet r.

In 4 will be a flat fuse 40 shown which a housing 41 made of in particular transparent plastic. The one-piece housing 41 has a closed cross-sectional contour, and surrounds a fuse link formed from metal 42 partially.

The fuse link 42 is made of a plate-shaped material, such. B. punched a sheet. The fuse link 42 has a first contact tongue 43 , a second contact tongue 44a and a third contact tongue 44b on, with the reeds 43 . 44a . 44b are parallel to each other, lie in a common plane and from the same side of the housing 41 protrude. The first contact tongue 43 is wider than the second and third reeds 44a . 44b and lies between the reeds 44a . 44b , The tongues 44a . 44b tapering towards their projecting ends. This facilitates centering of the fuse 40 when plugged into the fuse link 30 ,

The fuse link 42 has a first melting section 45a and a second melting section 45b on, wherein the first melting section 45a the first contact tongue 43 with the second contact tongue and the second fusion section 45b the first contact tongue 43 electrically conductively connects to the third contact tongue. The first melting section 45a and the second melting section 45b are preferably independent of each other.

The melting sections 45a . 45b form the end of the fuse link 42 that the projecting ends of the reeds 43 . 44a . 44b opposite. The melting sections 45a . 45b are in the assembled state of the blade fuse 40 laterally from the housing 41 edged.

Preferably, the first melting section opens 45a in the front of the second contact tongue 44a that of the housing 41 protruding end of the second contact tongue 44a opposite. Furthermore, the first melting section opens 45a in the front of the first contact tongue 43 that of the housing 41 protruding end of the first contact tongue 43 opposite. The same applies mutatis mutandis to the second melting section 45b , wherein this in the end face of the third contact tongue 44b and to the same face of the first contact tongue 43 opens, as the first melting section 45a , The melting section 45a and the melting section 45b open preferably independently of each other in the front side of the first contact tongue 43 ,

The embodiment shown may be slightly modified (not shown) by the first melting section 45a and the second melting section 45b laterally on opposite longitudinal sides of the first contact tongue 43 open, with the first contact tongue 43 is preferably longer than the second and third contact tongue 44a . 44b ,

The embodiment shown may alternatively be slightly modified (not shown) by the first melting section 45a to the longitudinal side of the second contact tongue 44a and the second melting section 45b to the longitudinal side of the third contact tongue 44b opens, with the second and third reeds 44a . 44b preferably longer than the first contact tongue 43 ,

Preferably, the second and third contact tongues protrude 44a . 44b equidistant from the case 41 from. The first contact tongue 43 can be less, equal or further from the case 41 protrude as the second and third contact tongue 44a . 44b ,

The first contact tongue 43 , the second contact tongue 44a and the third contact tongue 44b each have at least one recess 46 on, with whom they are in the case 41 axially firmly fastened. In particular, the housing 41 in the at least one recess 46 engage and thereby the fuse link 42 in the case 41 Fasten.

How best 4 is recognizable, the fuse link 42 with those of the case 41 protruding ends of the contact tongues 43 . 44a . 44b ahead in the case 41 via an opening, the side from which the reeds 43 . 44a . 44b protrude, oppose, introduced. This will damage the fusion sections 45a . 45b when inserted into the housing 41 prevented. Alternatively, the fuse link 42 with his reeds 43 . 44a . 44b opposite end ahead in the housing 41 via an opening, on the side from which the reeds 43 . 44a . 44b abut, is arranged to be introduced (not shown).

Furthermore, the fuse link 42 on the second contact leg 44a and on the third contact leg 44b alternatively or additionally to the first contact leg 43 an axial stop, in particular in the form of a step. The one or more axial stops cause during assembly of the fuse 40 an exact positioning of the fuse link 42 in relation to the housing 41 , It goes without saying that the housing 41 corresponding counter stops for the one or more stops of the fuse link 42 having. The counter-stop may be in modifications (not shown) from the lid 47 are formed, in particular when the stop from the end face of the first or second or third contact tongue 43 . 44a . 44b is formed and / or when the fuse link 42 from the side from which the reeds 43 . 44a . 44b protrude into the housing 41 is introduced and / or if at least one of the reeds 43 . 44a . 44b is longer than the rest.

The opening over which the fuse link 42 in the case 41 has been introduced, optional through a lid 47 be closed, this example, a fastening member 49 having, which in a fastening member 48 of the housing 41 can be arranged. The fastening members 48 . 49 can be connected to one another by force, form or material. In alternative embodiments (not shown), the lid 47 in one piece from the housing 41 shaped.

The lid 47 may be formed of a transparent material so that both fusion sections 45a . 45b over the front of the case 41 or the lid 47 are inspectable. The lid 47 Further, an information about an operating voltage, with which the fuse 40 is operable.

The housing of the fuse may preferably be oriented approximately to that of a fuse according to ISO 8820-3: 2010 Form C alternatively form E or F. The dimensions mentioned herein or in the application for the housing can be understood in particular as maximum dimensions or as dimensions indicating the dimensions of an imaginary cuboid enveloping the housing, with or without cover.

LIST OF REFERENCE NUMBERS

10

current bridge

11

contact slot

12

neighboring slot

13

Area of the contact slot between the contact sections

14

buss

14a

connecting portion

15

Fastening device / crimp

16

angle section

17

first bending edge

18

second bending edge

19

Contact pair of legs

19a, 19b

first and second contact legs

19c, 19d

first and second contact section

19e, 19f

intermediate section

19g

pressing in

20

secondary lock

21

Pressure piece

22

first locking leg

23

second locking leg

24

locking member

30

fuse carrier

31

casing

32

Receiving slot for current bridge / first storage compartment

33a

second receptacle for individual contacts

33b

third storage compartment for single contacts

34

web

35

Row of second storage compartments

36

Row of third storage compartments

37

Slot for fuse

38

Fastening device for fuse box

40

flat fuse

41

Housing / mount

42

Fuse link / retention tag

43

Power supply contact tongue / first contact tongue

44a

second contact tongue / Stromabführkontaktzunge

44b

third contact tongue / Stromabführkontaktzunge

45a

first melting section

45b

second melting section

46

recess

47

cover

48

Fixing counter member

49

attachment member

s ₁

Slot width of the contact slot between the connecting portion and the contact portions

s ₂

Slot width of the neighboring slot

s ₃

Slot width of the contact slot in the region of the contact sections

t ₁

Slot depth of the contact slot

t ₂

Slot depth of the neighboring slot

r

Rastmaß

Claims (8)

Flat fuse ( 40 ), comprising: a fuse link ( 42 ) made of electrically conductive material and a housing ( 41 ) made of electrically non-conductive material, which the fuse link ( 42 ) at least partially, the fuse link ( 42 ) exactly three contact tongues ( 43 . 44a . 44b ), namely a first contact tongue ( 43 ), a second contact tongue ( 44a ) and a third contact tongue ( 44b ), wherein the contact tongues ( 43 . 44a . 44b ) from the same side of the housing ( 41 protrude and extend in a common plane and the first contact tongue ( 43 ) between the second contact tongue ( 44a ) and the third contact tongue ( 44b ), wherein the fuse link ( 42 ) a first melting section ( 45a ) and a second melting section ( 45b ), wherein the first melting section ( 45a ) the first contact tongue ( 43 ) with the second contact tongue ( 44a ) electrically conductively connects and the second melting section ( 45b ) the first contact tongue ( 43 ) with the third contact tongue ( 44b electrically conductively connecting, characterized in that the first contact tongue ( 43 ) wider than the second and third contact tongue ( 44a . 44b ). Flat fuse ( 40 ) according to claim 1, characterized in that the first and / or second melting section ( 45a . 45b ) at the projecting end of the first contact tongue ( 43 ) opposite end of the first contact tongue ( 43 ) is arranged. Flat fuse ( 40 ) according to one of the preceding claims, characterized in that the first melting section ( 45a ) and the second melting section ( 45b ) are arranged so that they over the one side of the housing ( 41 ), the side from which the reeds ( 43 . 44a . 44b ), is opposite, can be inspected. Flat fuse ( 40 ) according to one of the preceding claims, characterized in that the first and / or second melting section ( 45a . 45b ) that the projecting end of the fuse ( 42 ) opposite end of the fuse link ( 42 ). Flat fuse ( 40 ) according to one of the preceding claims, characterized in that the housing ( 41 ) on the side, the side from which the reeds ( 43 . 44a . 44b ) protrude, is opposite, open or closed, in particular by means of a on the housing ( 41 ) or the fuse link ( 42 ) attached lid ( 47 ) is closed. Flat fuse ( 40 ) according to one of the preceding claims, characterized in that the fuse link ( 42 ) on the side, the side from which the reeds ( 43 . 44a . 44b ), is opposite, or on the side of which the reeds ( 43 . 44a . 44b protrude into the housing 41 is introduced. Fuse carrier ( 30 ), comprising at least a first receiving compartment ( 32 ) adapted to receive at least one current bridge ( 10 ), at least one second receiving compartment ( 33a ) adapted to receive a single contact and at least a third receptacle ( 33b ) adapted to receive a further single contact, wherein the fuse carrier ( 30 ) at least one slot ( 37 ), in which a flat fuse ( 40 ) after one of the Claims 1 to 6, wherein each slot ( 37 ) at least a part of the first receiving compartment ( 32 ), said second receiving compartment ( 33a ) and said third receiving compartment ( 33b ) assigned. Fuse box for a motor vehicle, wherein in the fuse box several fuse carrier ( 30 ), each having at least one slot ( 37 ) are arranged for a fuse, wherein at the at least one slot ( 37 ) one of the fuse carriers ( 30 ) at least one flat fuse ( 40 ) is arranged according to one of claims 1 to 6.

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