Electrical fuse

Abstract

An electrical fuse (100), an electrical conductor element (108) having a fusion zone (110) and further having a first extension (112) and a second extension (114) integrally formed with the fusion zone (110) and extending longitudinally from opposite ends of the fusion zone (110); an electrically insulating multi-component housing (102) enclosing said fusion zone (110) within an interior space (116); Equipped with The multi-part housing (102) comprises a first part (104) and a second part (106) slidingly engaged with the first part (104), the second part being positioned such that the second part (106) covers an access opening (118) of the first part to an interior space (116); The first extension (112) and the second extension (114) each include a terminal area, both terminal areas being disposed outside the multi-component housing (102). Electrical fuses(100).

Description

Technical Field

[0001] The present invention relates to an electrical fuse and a method of manufacturing an electrical fuse.

[0002] Known types of fuses comprise an insulating tubular housing with conductive end caps at both ends. A soluble wire extending through the interior of the housing connects the two end caps. The soluble wire is sized to melt when a predetermined maximum allowable current flows through the wire. The connection between the wire and the end cap is prone to failure, i.e., it may break with a current smaller than the rated current. The higher the rated current, the more difficult it is to avoid early triggering of such a fuse with high reliability.

[0003] International Application No. 2020 / 052356, which is an unpublished document, discloses an electrical fuse comprising an electrically insulating housing surrounding an internal space, the housing having a first opening and a second opening opposite the first opening, and an integrally formed electrical conductor element extending from a first terminal region outside the housing, across the first opening, the internal space and the second opening, to a second terminal region outside the housing. A first sealing portion of the conductor element seals the first opening, and a second sealing portion of the conductor element seals the second opening.

[0004] A problem in modern fuse assembly technology is the cumbersome process of inserting a conductor element across both openings. Furthermore, filling the internal space with a filler material, such as arc extinguishing material, through one of the openings can also be cumbersome. To solve this problem, modern technology proposes making the cross-section of the second opening larger than that of the first opening. This allows for a funnel-shaped internal space designed to guide the end of a conductor element inserted through the larger second opening into and through the tighter-sized first opening. Furthermore, arc extinguishing material can be filled into the internal space through the second opening. The second opening is sealed by a sealing portion formed by the conductor element itself. In the prior art, a problem was that a connecting means had to be provided to prevent the movement of the sealing portion. This connecting means can be provided by a projection on the sealing portion that protrudes toward the internal space. However, providing such a connecting means is costly and requires an additional manufacturing step. Furthermore, attaching the sealing portion to the housing is also cumbersome.

[0005] An objective of the present invention is to provide an alternative electrical fuse that at least avoids the problems of the latest technology. A more specific objective of the present invention is to provide an electrical fuse that is easy to manufacture.

[0006] This objective is achieved by the electric fuse described in claim 1. Furthermore, a method for manufacturing the electric fuse described in claim 11 is provided.

[0007] By definition, an electrical fuse is a protective device used in a wide range of electrical engineering fields. An electrical fuse is designed, for example, so that current flows through a portion of a fusible material, and when this current becomes excessive, the displacement of the fusible material interrupts the current. Electrical fuses are desirable to be highly reliable, meaning that they reliably interrupt the current when it exceeds a predetermined maximum allowable current. Furthermore, electrical fuses should not interrupt electrical circuits at small current values ​​corresponding to normal operating conditions. Additionally, by definition, thermal fuses are designed to interrupt the current when the ambient temperature becomes excessive. Electrical fuses that combine the operating mechanisms of current-limiting fuses and thermal fuses are also conceivable.

[0008] The electric fuse according to the present invention comprises an electric conductor element having a molten portion and further integrally formed with the molten portion, and having a first extension and a second extension extending longitudinally from both ends of the molten portion, and an electrically insulating multi-component housing that seals the molten portion within an internal space, wherein the multi-component housing comprises a first component and a second component that slides into the first component, the second component being positioned such that it covers an access opening of the first component to the internal space, and the first and second extensions each have terminal regions, both of which are located outside the multi-component housing.

[0009] A multi-part housing may be a two-part housing, the two parts of which are the first and second parts of an electrically insulating housing. The first and second parts of the housing may be slidably engaged, as the parts of a matchbox are slidably engaged, or as drawers are slidably engaged in their respective compartments in furniture. In this example, the first part having an access opening corresponds to the inner parts of the matchbox or each drawer. The access opening of the first part may be oriented such that the sliding movement of the first part relative to the second part occurs in a direction parallel to the access opening. Alternatively, the sliding direction of the sliding engagement may be oriented perpendicular to the access opening of the first part. In this case, the second part may form a cap or lid for the first part.

[0010] Advantageously, the electric fuse according to the present invention can be realized with a very simple configuration, utilizing only three elements: a first component, a second component, and an electrical conductor element surrounded by a multi-component housing in at least the molten region. Surprisingly, even with this simple configuration, the internal space of the multi-component housing can be adequately sealed, and the first component and the second component can be properly attached to each other without the need for further connecting means.

[0011] In the initial steps of assembly, the electrical conductor element can be engaged with the first component by guiding it through at least one opening in the first component. This assembly of the electrical conductor element to the first component is easily accomplished because it only requires guiding the electrical conductor element through one opening, thus eliminating the need for threading. Subsequently, the first component, equipped with the electrical conductor element, can be engaged with the second component by sliding engagement. This sliding engagement allows the electrical conductor element to be guided through the opening in the second component without the need for threading.

[0012] The internal space of a multi-component housing may be empty except for the portion of the conductive element that crosses the internal space. Alternatively, the internal space may be filled with a filler material, such as arc-extinguishing material. Arc-extinguishing material is suitable for electrical fuses designed for interrupting high system voltages. Arc-extinguishing material is also suitable for electrical fuses designed for large maximum allowable currents, e.g., in the 100 ampere (100A) range and above, e.g., up to 2000 amperes or even up to 10000 amperes (10kA), and may be sand, particularly quartz sand. Thus, the electrical fuse is suitable for use in high-current or ultra-high-current regions. The latter current region will be particularly useful in the near future as batteries and accumulators with short-circuit currents in that range will be available. In this situation, where the nominal current is in the range of 50A to 500A and an interrupting capacity of up to 10kA is required, this can be provided by the fuse according to the present invention. Note that, for example, in the case of 32V with a full short-circuit current, arc-extinguishing material may be required. Arc extinguishing material may be necessary, except when starting at low voltages, e.g., 16V, e.g., 32V with reduced current, or high voltages, e.g., 48V, and when there is a very low overcurrent.

[0013] Even more advantageously, the mutual attachment of the first and second components of the multi-component housing can be achieved by the electrical conductor elements themselves, for example, by bending their protruding portions when the first and second components are engaged. Therefore, additional connection means such as adhesive or soldering can be omitted.

[0014] Since the conductive elements are conductive and integrally formed, they can form a single soluble element and simultaneously provide the functions of terminal regions of a fuse, such as a first terminal region and a second terminal region. The terminal regions can be formed by the conductive elements, for example, directly by a first extension and a second extension, respectively. Alternatively, they can be at least partially or completely covered with one or more layers, such as a tin layer, a nickel layer, a gold layer, or a silver layer, so that the terminal regions can be easily connected to the corresponding conductive pads by soldering. Alternatively, means for connecting the terminals to the corresponding conductors can also be provided by welding, screwing, or riveting.

[0015] In this example, the first terminal region and the second terminal region are on the same plane. The term "terminal regions on the same plane" may mean that the first and second terminal regions are spaced apart from each other in a common plane. This embodiment is particularly suitable for fuses designed as surface mount devices (SMDs), i.e., fuses suitable for wireless applications, also known as surface mount technology (SMT). The terminal regions can be positioned on one side, for example, the bottom surface of a multi-component housing, with their backs to the multi-component housing. In this way, the electrical fuse can be placed on a printed circuit board and the first and second terminal regions can be soldered to solder pads on the printed circuit board by reflow soldering. Compared to the known so-called blade fuses commonly used in automotive applications, the electrical fuse according to this embodiment has the advantage of being automatically placed on a printed circuit board and being soldered by a standard reflow process, whereas the installation of blade fuses must be done manually and is generally performed at the final stage of the production chain, leading to relatively high costs.

[0016] In this example, the terminal area can be folded to opposing surfaces of the multi-component housing, for example, the front and rear surfaces of the multi-component housing, or to the sides of the multi-component housing. In this example, a series connection can be realized, for example, on a printed circuit board, to adjacent components, for example, components that should be protected from overcurrent. In other words, the electrical fuse can be used like a cartridge fuse.

[0017] The terminal regions are spaced apart from each other, allowing the electrical fuse to be connected in series to electrical equipment that needs protection from overcurrent. An electrical fuse has two states: a conductive state and a blown state. In the conductive state, i.e., the original state before blowing, the conductor element provides electrical contact between the terminal regions. When the fuse blows, i.e., when the molten portion of the conductor element melts due to a current exceeding a predetermined maximum allowable current, the electrical connection between the terminal regions is interrupted. The electrical fuse according to this invention is a non-resettable fuse, i.e., it cannot return to the conductive state. There is no reset mechanism.

[0018] The molten portion of a conductor element can be realized by reducing the cross-sectional area, particularly by reducing the thickness of the conductor element, reducing the width of the conductor element, separating the conductor element into two or more parallel strips in the region of the molten portion, at least one recess in at least a portion of the molten portion in the plane of the conductor element as viewed from the side of the conductor element, or a combination of the aforementioned feasibility, for example, by local separation into two, three or more parallel strips, each with a reduced thickness compared to the thickness of the conductor element before and after the separated portion forming the molten portion of the fuse. By changing the number of strips and the cross-sectional area of ​​the strips, the current-time characteristics of the fuse can be changed according to the needs of the desired application. Furthermore, a molten portion with a smaller cross-sectional area of ​​the conductor element can be realized by different recesses, such as holes.

[0019] In further examples, the conductive element may comprise at least one overlay positioned adjacent to at least a portion of the molten portion, for example, one of the extensions, and the molten portion and the overlay may each contain a material that diffuses when a predetermined ambient temperature is exceeded and when current is conducted by the conductive element.

[0020] A multi-component housing advantageously prevents falling debris from the molten portion of electrical conductor elements from damaging neighboring elements or people nearby when a fuse blows. Multi-component housings can be manufactured from materials capable of withstanding the temperature rise that occurs when a fuse blows.

[0021] Embodiments of the present invention are intended for applications utilizing surface mount technology (SMT). In at least these cases, the housing material can be selected to withstand reflow processes at temperatures up to 260°C.

[0022] Multi-component housings can also contain different materials such as polymers or ceramics. A multi-component housing can be constructed from a polymer containing fillers to enhance its temperature stability. A multi-component housing may also be constructed from a ceramic material. The material of the multi-component housing can be selected to prevent cracking in the housing due to thermal shock, for example, during arc discharge. High-performance thermoplastics, particularly glass fiber-reinforced high-performance polyamides, are especially suitable for this purpose.

[0023] By definition, the term “longitudinal direction” as used with respect to a conductive element in some embodiments of the present invention means that the conductive element can extend longitudinally in its initial (unattached) state, but can be bent in its extension, or rather in the extension, in a later state, as will be described in more detail later. Even in the latter case, at least one portion of the conductive element, for example, the molten portion, can still extend longitudinally. The term “longitudinal direction” as used with respect to a conductive element in some embodiments of the present invention also reflects the direction of the current flowing through the molten portion of the conductive element.

[0024] An integrally formed electrical conductor element is provided, formed as a single piece. This means that the conductor element involves continuous material formation without joints, such as connection points, connecting lines, or connecting surfaces established by soldering, welding, etc., or without mechanically connected connections. The integrally formed conductor element can be obtained in its final shape by processes such as rolling, cutting, punching, embossing, or bending.

[0025] Electrical conductor elements can be made of metals such as copper, or metal alloys such as copper alloys, bronze, brass, silver alloys, stainless steel, and other iron alloys. Metal alloys suitable for electrical conductor elements and possessing high or very high conductivity are found in the groups of copper-silver alloys, copper-zirconium alloys, copper-zinc alloys, copper-magnesium alloys, copper-iron alloys, copper-chromium alloys, copper-chromium-zirconium alloys, copper-nickel-phosphorus alloys, and copper-tin alloys. Alternative metal alloys suitable for electrical conductor elements and possessing moderate conductivity are found in the groups of copper-nickel-silicone alloys, copper-beryllium alloys, copper-nickel-tin alloys, copper-cobalt-beryllium alloys, and copper-nickel-beryllium alloys.

[0026] Embodiments of an electric fuse arise from the features of claims 2 to 10.

[0027] In one embodiment of the electric fuse according to the present invention in the first aspect, a first component has a first opening and a second opening on the side opposite to the first opening, wherein the first opening is penetrated by a first extension, and the second opening is penetrated by a second extension, and a wall formed by a second component covers an access opening.

[0028] This embodiment according to the present invention in the first aspect is an electric fuse having a multi-component housing, wherein a first component has both a first opening and a second opening sealed by an electrical conductor element, and the access opening can be formed wide so that a filler, for example, an arc extinguishing material, can be easily filled into the internal space. When the first component and the second component of the multi-component housing are engaged, a wall formed by the second component covers the access opening so as to reliably seal the internal space from the outside.

[0029] In one embodiment of the electric fuse according to the present invention in the second aspect, a first component has a first opening, and a second component has a second opening on the side opposite to the first opening of the first component, wherein the first opening is penetrated by a first extension, and the second opening is penetrated by a second extension.

[0030] This embodiment according to the present invention in the second aspect is an electric fuse having a multi-component housing, wherein the first component has a first opening, the second component has a second opening, both openings are sealed by an electrical conductor element, and the access opening can be formed wide so that a filler can be easily filled into the internal space. When the first component and the second component of the multi-component housing are engaged, a wall formed by the second component covers the access opening so as to reliably seal the internal space from the outside.

[0031] In one embodiment of the electrical fuse according to the present invention, a first extension formed by an electrical conductor element seals the first opening, and a second extension formed by an electrical conductor element seals the second opening.

[0032] In one embodiment of the electrical fuse according to the present invention, a cross-section perpendicular to the longitudinal direction of the first extension of the electrical conductor element corresponds to the cross-section of the first opening in terms of shape and dimensions, and / or a cross-section perpendicular to the longitudinal direction of the second extension of the electrical conductor element corresponds to the cross-section of the second opening in terms of shape and dimensions.

[0033] As an example, the first extension and / or the second extension may have a rectangular cross-section, for example, a rectangle defined by the thickness and width of the sheet-like metal portion forming the extension. The rectangular cross-section can be sized to fit exactly into the rectangular first opening and / or second opening of the multi-part housing. As a result, the internal space of the multi-part housing is properly sealed against the outside. The wall of the multi-part housing, the first extension of the conductor element, and the second extension of the conductor element together form a dust-proof closure. The gap between the multi-part housing and the first and second extensions of the conductor element is sized small enough so that dust cannot pass through the gap. This prevents the intrusion of dust particles from the outside of the electrical fuse into the multi-part housing, and on the other hand, protects the surroundings of the electrical fuse from the particles generated as a result of the fuse blowing. The diameter of dust particles is usually in the range of 5 μm to 100 μm. Therefore, the width of the gap can also be made smaller than 100 μm, less than 50 μm, less than 5 μm, or 2 μm or 1 μm to achieve an even higher level of protection.

[0034] In an alternative embodiment of the electrical fuse according to the present invention, the first opening and the second opening are formed in a V-shape or a W-shape in a cross-sectional view of the multi-part housing in a plane parallel to the longitudinal direction of the melting portion of the electrical conductor element. In this embodiment, even when an opening with a sufficiently small dimension cannot be formed in the manufacturing process, the sealing performance against fine particles can be improved.

[0035] In one embodiment of the electric fuse according to the present invention, the conductor element is a sheet of metal.

[0036] The outer contour of the conductive element can be formed by punching or cutting, etching, or, for example, laser cutting the conductive element from a larger sheet of metal. Holes may be drilled in the conductive element. In this step, a molten portion with reduced width or a molten portion having separate parallel running portions can be manufactured. To manufacture a molten portion with reduced cross-section, the thickness of a portion of the sheet of metal can be reduced by rolling or pressing. The sheet of metal can be easily bent into a final shape, for example, a shape that covers a first opening and / or a second opening of a multi-part housing. The final positions of the first and second extensions can be achieved by bending them to the desired positions. The sheet of metal can be made of copper, bronze, brass, copper alloys, silver alloys, steel, and especially stainless steel, as described above in the context of materials suitable for conductive elements.

[0037] In one embodiment of the present invention, the electric fuse further comprises a filler material that fills the internal space. In a further embodiment of the electric fuse according to the present invention, the filler material is made of a material having arc-extinguishing properties. In a further embodiment of the electric fuse according to the present invention, the filler material is made of at least one of sand, silicone, glass beads, and ceramic beads.

[0038] Advantageously, the internal space of the multi-component housing can be easily filled with a filler, such as an arc extinguishing material, through an access opening in the first component, and the access opening can be made wide to facilitate filling. After the internal space has been filled with the arc extinguishing material, the first component and the second component are slidably engaged, and the access opening of the first component is covered by the second component, thus allowing the arc extinguishing material to be properly retained in the internal space. Thus, additional sealing measures can be avoided.

[0039] Furthermore, the scope of the present invention is the method described in independent claim 11. According to the present invention, a method for manufacturing an electric fuse is: a) A step of preparing an electrical conductor element having a molten portion, and further having a first extension and a second extension integrally formed with the molten portion and extending longitudinally from both ends of the molten portion, b) The step of preparing an electrically insulating multi-component housing comprising a first component and a second component, c) The step of introducing a conductive element into a multi-component housing so that the molten portion is sealed within the internal space of the multi-component housing, d) The step of engaging the first part and the second part in a sliding manner with respect to each other, thereby covering the access opening of the first part to the internal space with the second part. Includes.

[0040] The method may include the additional step of providing terminal regions on the first and second extensions of the electrical conductor element, respectively. The method may also include the further step of positioning both terminal regions outside the multi-component housing.

[0041] In one embodiment of the method according to the present invention in a first aspect, step b) further includes providing the first component with a first opening and a second opening opposite to the first opening, and step c) further includes introducing a conductor element through the first opening such that the first opening is penetrated by a first extension, and introducing a conductor element through the second opening such that the second opening is penetrated by a second extension.

[0042] In an embodiment of the method according to the present invention in a second aspect, step b) further includes providing a first opening in the first part and a second opening in the second part opposite to the first opening when the first part and the second part are engaged, and step c) further includes introducing a conductor element through the first opening such that the first opening is penetrated by a first extension, and introducing a conductor element through the second opening such that the second opening is penetrated by a second extension.

[0043] In one embodiment of the method according to the present invention, the method further, e) Bending the first extension and / or the second extension so that they at least partially abut against the outer wall of the multi-component housing. Includes.

[0044] In one embodiment of the method according to the present invention, step d) is preceded by a step of filling the internal space with a filler through an access opening.

[0045] The features of the embodiments described above can be combined, as long as they do not contradict each other.

[0046] Next, the present invention will be described in more detail using the figures. [Brief explanation of the drawing]

[0047] [Figure 1a] This is a different diagram of the electric fuse according to the present invention in the first embodiment. [Figure 1b] This is a different diagram of the electric fuse according to the present invention in the first embodiment. [Figure 1c] This is a different diagram of the electric fuse according to the present invention in the first embodiment. [Figure 1d] This diagram shows different states during the manufacturing of an electric fuse according to the first embodiment of the present invention. [Figure 1e] This diagram shows different states during the manufacturing of an electric fuse according to the first embodiment of the present invention. [Figure 1f] This diagram shows different states during the manufacturing of an electric fuse according to the first embodiment of the present invention. [Figure 1g] This diagram shows different states during the manufacturing of an electric fuse according to the first embodiment of the present invention. [Figure 1h] This diagram shows different states during the manufacturing of an electric fuse according to the first embodiment of the present invention. [Figure 1i] This diagram shows different states during the manufacturing of an electric fuse according to the first embodiment of the present invention. [Figure 2a] This is a different diagram of the electric fuse according to the present invention in a second embodiment. [Figure 2b] This is a different diagram of the electric fuse according to the present invention in a second embodiment. [Figure 2c] This is a different diagram of the electric fuse according to the present invention in a second embodiment. [Figure 2d] This is a different diagram of the electric fuse according to the present invention in a second embodiment. [Figure 2e] This diagram shows different states during the manufacturing of an electric fuse according to the present invention in a second embodiment. [Figure 2f] This diagram shows different states during the manufacturing of an electric fuse according to the present invention in a second embodiment. [Figure 2g] This diagram shows different states during the manufacturing of an electric fuse according to the present invention in a second embodiment. [Figure 2h] This diagram shows different states during the manufacturing of an electric fuse according to the present invention in a second embodiment. [Figure 2i] This diagram shows different states during the manufacturing of an electric fuse according to the present invention in a second embodiment. [Figure 2j] This diagram shows different states during the manufacturing of an electric fuse according to the present invention in a second embodiment. [Figure 3a] This is a different diagram of the electric fuse according to the present invention in a third embodiment. [Figure 3b] This is a different diagram of the electric fuse according to the present invention in a third embodiment. [Figure 3c]This is a different diagram of the electric fuse according to the present invention in a third embodiment. [Figure 3d] This diagram shows different states during the manufacturing of an electric fuse according to the third embodiment of the present invention. [Figure 3e] This diagram shows different states during the manufacturing of an electric fuse according to the third embodiment of the present invention. [Figure 3f] This diagram shows different states during the manufacturing of an electric fuse according to the third embodiment of the present invention. [Figure 3g] This diagram shows different states during the manufacturing of an electric fuse according to the third embodiment of the present invention. [Figure 3h] This diagram shows different states during the manufacturing of an electric fuse according to the third embodiment of the present invention. [Figure 3i] This diagram shows different states during the manufacturing of an electric fuse according to the third embodiment of the present invention. [Figure 4a] This is a different diagram of the electric fuse according to the present invention in a fourth aspect. [Figure 4b] This is a different diagram of the electric fuse according to the present invention in a fourth aspect. [Figure 4c] This is a different diagram of the electric fuse according to the present invention in a fourth aspect. [Figure 4d] This diagram shows different states during the manufacturing of an electric fuse according to the fourth embodiment. [Figure 4e] This diagram shows different states during the manufacturing of an electric fuse according to the fourth embodiment. [Figure 4f] This diagram shows different states during the manufacturing of an electric fuse according to the fourth embodiment. [Figure 4g] This diagram shows different states during the manufacturing of an electric fuse according to the fourth embodiment. [Figure 4h] This diagram shows different states during the manufacturing of an electric fuse according to the fourth embodiment. [Figure 4i] This diagram shows different states during the manufacturing of an electric fuse according to the fourth embodiment. [Figure 5a]This is a different diagram of the electric fuse according to the present invention in a fifth embodiment. [Figure 5b] This is a different diagram of the electric fuse according to the present invention in a fifth embodiment. [Figure 5c] This is a different diagram of the electric fuse according to the present invention in a fifth embodiment. [Figure 5d] This diagram shows different states during the manufacturing of an electric fuse according to the fifth embodiment of the present invention. [Figure 5e] This diagram shows different states during the manufacturing of an electric fuse according to the fifth embodiment of the present invention. [Figure 5f] This diagram shows different states during the manufacturing of an electric fuse according to the fifth embodiment of the present invention. [Figure 5g] This diagram shows different states during the manufacturing of an electric fuse according to the fifth embodiment of the present invention. [Figure 5h] This diagram shows different states during the manufacturing of an electric fuse according to the fifth embodiment of the present invention.

[0048] Figures 1a) to 1c) show different diagrams of the electric fuse 100 according to the present invention in the first embodiment, and Figures 1d) to 1i) show different states of the electric fuse 100 during manufacturing in the first embodiment.

[0049] The electric fuse 100 comprises an electrically insulating multi-component housing 102 having a first component 104 and a second component 106. In the assembled state, the first component 104 and the second component 106 are slidably engaged with each other, as will be described in more detail below.

[0050] The electric fuse 100 further comprises an electric conductor element 108. In the illustrated embodiment, the electric conductor element 108 is made of a sheet of metal. The electric conductor element 108 comprises a molten portion 110, a first extension 112, and a second extension 114, all of which are integrally formed. The first extension 112 and the second extension 114 each extend longitudinally from both ends of the molten portion 110. The molten portion 110 of the electric conductor element 108 can be formed as, for example, parallel strips with a width reduced compared to the widths of the first extension 112 and the second extension 114.

[0051] In the assembled state, the multi-component housing 102 seals the molten portion 110 within the internal space 116 of the multi-component housing 102. The first component 104 has an access opening 118 that allows access to the internal space 116. In the assembled state, the first component 104 and the second component 106 are engaged, and the second component 106 is positioned so that it covers the access opening 118 of the first component 104 to the internal space 116.

[0052] The first component 104 further has a first opening 120 and a second opening 122 opposite to the first opening 120. The first opening 120 is penetrated by a first extension 112, and the second opening 122 is penetrated by a second extension 114. A (side) wall 124, formed by the second component 106, covers the access opening 118 of the first component 104.

[0053] When assembling the electric fuse 100, the electric conductor element 108 is attached to the first part 104 by guiding the first extension 112 and the second extension 114 of the electric conductor element 108 laterally through the first opening 120 and the second opening 122 of the first part 104, such that the molten portion 110 of the electric conductor element 108 is sealed within the internal space 116, or rather, present there (see Figures 1d and 1e). The first extension 112 can be bent in advance.

[0054] In the next step, the first component 104 (equipped with the electrical conductor element 108) and the second component 106 are slidably engaged with each other (see Figures 1f and 1g). In the engaged state, the (side) wall 124 formed by the second component 106 covers the access opening 118 of the first component 104 (see Figures 1h and 1i). Thus, the molten portion 110 of the electrical conductor element 108 is positioned in the internal space 116 of the multi-component housing 102, in a manner that is properly sealed to the outside. In the next step, the second extension 114 can be bent in at least a portion thereof. The bending can be done, for example, to engage with the outer surface portion of the second component 106, thereby properly attaching, or rather restraining, the first component 104 and the second component 106 to each other. In the illustrated embodiment, a portion of the second extension 114 is bent to correspond to a pre-bent portion of the first extension 112 (see Figures 1b and 1c).

[0055] In the illustrated embodiment, the cross-section of the first extension 112 of the electrical conductor element 108 corresponds in terms of shape and dimensions to the cross-section of the first opening 120. Furthermore, the cross-section of the second extension 114 of the electrical conductor element 108 corresponds in terms of shape and dimensions to the cross-section of the second opening 122.

[0056] In this assembled state, the first extension 112, which is made up of the electrical conductor element 108, seals the first opening 120 of the first component 104, and the second extension 114, which is made up of the electrical conductor element 108, seals the second opening 122 of the first component 104.

[0057] The walls of the multi-component housing 102, the first extension 112 of the electrical conductor element 108, and the second extension 114 of the electrical conductor element 108 together form a dustproof multi-component housing 102. The gap between the multi-component housing 102 and the first extension 112 and the second extension 114 of the electrical conductor element 108 can be made small enough so that dust cannot pass through the gap. This prevents dust particles from entering the multi-component housing 102 from outside the electrical fuse 100, and protects the area around the electrical fuse 100 from particles resulting from the melting of the electrical conductor element 108. As a result, the internal space 116 of the multi-component housing 102 can be properly sealed, and the first component 104 and the second component 106 can be properly attached to each other without further connecting means.

[0058] Following the step of attaching the electrical conductor element 108 to the first component 104, the internal space 116 can be filled with a filler material 126, for example, an arc extinguishing material, as schematically shown in Figure 1c). Advantageously, the access opening 118 is broadly formed to allow for easy filling of the internal space 116 with the filler material 126. Once the first component 104 and the second component 106 of the multi-component housing 102 are engaged, the wall 124 formed by the second component 106 adequately covers, or rather seals, the access opening 118 from the outside, ensuring that the filler material 126 is securely held inside the internal space 116.

[0059] Figures 2a) to 2d) show different diagrams of the electric fuse 200 according to the present invention in a second embodiment, and Figures 2e) to 2j) show different states of the electric fuse 200 according to the present invention in a second embodiment during manufacturing.

[0060] The electric fuse 200 comprises an electrically insulating multi-component housing 202 having a first component 204 and a second component 206. In the assembled state, the first component 204 and the second component 206 are slidably engaged with each other, as will be described in more detail below.

[0061] The electric fuse 200 further comprises an electric conductor element 208. In the illustrated embodiment, the electric conductor element 208 is made of a sheet of metal. The electric conductor element 208 comprises a molten portion 210, a first extension 212, and a second extension 214, all of which are integrally formed. The first extension 212 and the second extension 214 each extend longitudinally from both ends of the molten portion 210. The molten portion 210 of the electric conductor element 208 can be formed, for example, as a parallel strip with a width reduced compared to the width of the first extension 212 and the width of the second extension 214.

[0062] In the assembled state, the multi-component housing 202 seals the molten portion 210 within the internal space 216 of the multi-component housing 202. The first component 204 has a (front) access opening 218 that allows access to the internal space 216. In the assembled state, the first component 204 and the second component 206 are engaged, and the second component 206 is positioned so that it covers the access opening 218 of the first component 204 to the internal space 216.

[0063] The first component 204 has a first opening 220, and the second component 206 has a second opening 222 on the opposite side of the first opening 220 of the first component 204. The first opening 220 is penetrated by a first extension 212, and the second opening 222 is penetrated by a second extension 214. A (rear) wall 224 formed by the second component 206 covers the access opening 218 of the first component 204.

[0064] When assembling the electric fuse 200, the electrical conductor element 208 is attached to the first component 204 by guiding the first extension 212 and the second extension 214 through the first opening 220 of the first component 204 (in its longitudinal direction) such that the molten portion 210 of the electrical conductor element 208 is located in the internal space 216 (see, for example, Figures 2e, 2f, and 2i). The first extension 212 can be pre-bent.

[0065] In the next step, the first part 204 (equipped with the electrical conductor element 208) and the second part 206 are slidably engaged with each other (see Figures 2h and 2i). In the engaged state, the (rear) wall 224 formed by the second part 206 covers the access opening 218 of the first part 204 (see Figure 2j). Thus, the molten portion 210 of the electrical conductor element 208 is present in the internal space 216 of the multi-part housing 202, properly sealed from the outside (see Figures 2c and 2d). In the next step, the second extension 214 can be bent in at least a portion thereof. The bending can be done, for example, to engage with the outer surface portion of the second part 206, thereby properly attaching, or rather restraining, the first part 204 and the second part 206 to each other. In the illustrated embodiment, a portion of the second extension 214 is bent to correspond to a pre-bent portion of the first extension 212 (see also Figures 2c and 2d).

[0066] In the illustrated embodiment, the cross-section of the first extension 212 of the electrical conductor element 208 corresponds in terms of form and dimensions to the cross-section of the first opening 220 of the first component 204. Furthermore, the cross-section of the second extension 214 of the electrical conductor element 208 corresponds in terms of form and dimensions to the cross-section of the second opening 222 of the second component 206.

[0067] In this assembled state, the first extension 212, which is made up of the electrical conductor element 208, seals the first opening 220 of the first component 204, and the second extension 214, which is made up of the electrical conductor element 208, seals the second opening 222 of the second component 206.

[0068] The walls of the multi-component housing 202, the first extension 212 of the electrical conductor element 208, and the second extension 214 of the electrical conductor element 208 together form a dustproof multi-component housing 202. The gap between the multi-component housing 202 and the first extension 212 and the second extension 214 of the electrical conductor element 208 can be made small enough so that dust cannot pass through the gap. This prevents dust particles from entering the multi-component housing 202 from outside the electrical fuse 200, and protects the area around the electrical fuse 200 from particles resulting from the melting of the electrical conductor element 208.

[0069] As a result, the internal space 216 of the multi-component housing 202 can be properly sealed, and the first component 204 and the second component 206 can be properly attached to each other without further connecting means.

[0070] Following the step of attaching the electrical conductor element 208 to the first component 204, the internal space 216 can be filled with a filler material 226, for example, an arc extinguishing material, as schematically shown in Figure 2d). Advantageously, the access opening 218 is broadly formed to allow for easy filling of the internal space 216 with the filler material 226. Once the first component 204 and the second component 206 of the multi-component housing 202 are engaged, the (rear) wall 224 formed by the second component 206 adequately covers, or rather seals, the access opening 218 from the outside, ensuring that the filler material 226 is securely held inside the internal space 216.

[0071] Figures 3a) to 3c) show different diagrams of the electric fuse 300 according to the present invention in a third embodiment, and Figures 3d) to 3i) show different states of the electric fuse 300 according to the present invention in a third embodiment during manufacturing.

[0072] The electric fuse 300 comprises an electrically insulating multi-component housing 302 having a first component 304 and a lid-shaped second component 306. In the assembled state, the first component 304 and the second component 306 are slidably engaged with each other, as will be described in more detail below.

[0073] The electric fuse 300 further comprises an electric conductor element 308. In the illustrated embodiment, the electric conductor element 308 is made of a sheet of metal. The electric conductor element 308 comprises a molten portion 310, a first extension 312, and a second extension 314, all of which are integrally formed. The first extension 312 and the second extension 314 each extend longitudinally from both ends of the molten portion 310. The molten portion 310 of the electric conductor element 308 can be formed as, for example, parallel strips with a width reduced compared to the widths of the first extension 312 and the second extension 314.

[0074] In the assembled state, the multi-component housing 302 seals the molten portion 310 within the internal space 316 of the multi-component housing 302. The first component 304 has a (front) access opening 318 that allows access to the internal space 316. In the assembled state, the first component 304 and the second component 306 are engaged, and the second component 306 is positioned so that it covers the access opening 318 of the first component 304 to the internal space 316.

[0075] The first part 304 has a first opening 320, and the second part 306 has a second opening 322 on the opposite side of the first opening 320 of the first part 304. The first opening 320 is penetrated by a first extension 312, and the second opening 322 is penetrated by a second extension 314. The wall 324 formed by the second part 306 covers the access opening 318 of the first part 304.

[0076] When assembling the electric fuse 300, the electrical conductor element 308 is attached to the first component 304 by guiding the first extension 312 and the second extension 314 through the first opening 320 of the first component 304 so that the molten portion 310 of the electrical conductor element 308 is located in the internal space 316 (Figures 3d to 3h). The first extension 312 can be bent in advance.

[0077] In the next step, the first component 304 (equipped with the electrical conductor element 308) and the second component 306 are slidably engaged with each other (see Figures 3g and 3h). In the engaged state, a wall 324 formed by the lid-shaped second component 306 covers the access opening 318 of the first component 304 (see Figure 3i). Thus, the molten portion 310 of the electrical conductor element 308 is present in the internal space 316 of the multi-component housing 302, properly sealed from the outside (see Figures 3b and 3c). In the next step, the second extension 314 can be bent in at least a portion thereof. The bending can be done, for example, to engage with the outer surface portion of the second component 306, thereby properly attaching, or rather restraining, the first component 304 and the second component 306 to each other. In the illustrated embodiment, a portion of the second extension 314 is bent to correspond to a pre-bent portion of the first extension 312 (see also Figures 3b and 3c).

[0078] In the illustrated embodiment, the cross-section of the first extension 312 of the electrical conductor element 308 corresponds in terms of form and dimensions to the cross-section of the first opening 320. Furthermore, the cross-section of the second extension 314 of the electrical conductor element 308 corresponds in terms of form and dimensions to the cross-section of the second opening 322 of the second component 306.

[0079] In this assembled state, the first extension 312, which is made up of the electrical conductor element 308, seals the first opening 320 of the first component 304, and the second extension 314, which is made up of the electrical conductor element 308, seals the second opening 322 of the second component 306.

[0080] The walls of the multi-component housing 302, the first extension 312 of the electrical conductor element 308, and the second extension 314 of the electrical conductor element 308 together form a dustproof multi-component housing 302. The gap between the multi-component housing 302 and the first extension 312 and the second extension 314 of the electrical conductor element 308 can be made small enough so that dust cannot pass through the gap. This prevents dust particles from entering the multi-component housing 302 from outside the electrical fuse 300, and protects the area around the electrical fuse 300 from particles resulting from the melting of the electrical conductor element 308.

[0081] As a result, the internal space 316 of the multi-component housing 302 can be properly sealed, and at the same time, the first component 304 and the second component 306 can be properly attached to each other without further connecting means.

[0082] Following the step of attaching the electrical conductor element 308 to the first component 304, the internal space 316 can be filled with a filler material 326, for example, an arc extinguishing material, as schematically shown in Figure 3c). Advantageously, the access opening 318 is broadly formed to allow for easy filling of the internal space 316 with the filler material 326. Once the first component 304 and the second component 306 of the multi-component housing 302 are engaged, the wall 324 formed by the second component 306 adequately covers, or rather seals, the access opening 318 from the outside, ensuring that the filler material 326 is securely held inside the internal space 316.

[0083] Figures 4a) to 4c) show different diagrams of the electric fuse 400 according to the present invention in the fourth embodiment, and Figures 4d) to 4i) show different states of the electric fuse 400 according to the present invention in the fourth embodiment during manufacturing.

[0084] The electric fuse 400 comprises an electrically insulating multi-component housing 402 having a first component 404 and a second component 406. In the assembled state, the first component 404 and the second component 406 are slidably engaged with each other, as will be described in more detail below.

[0085] The electric fuse 400 further comprises an electric conductor element 408. In the illustrated embodiment, the electric conductor element 408 is made of a sheet of metal. The electric conductor element 408 comprises a molten portion 410, a first extension 412, and a second extension 414, all of which are integrally formed. The first extension 412 and the second extension 414 each extend longitudinally from both ends of the molten portion 410. The molten portion 410 of the electric conductor element 408 can be formed as, for example, parallel strips with a width reduced compared to the widths of the first extension 412 and the second extension 414.

[0086] In the assembled state, the multi-component housing 402 seals the molten portion 410 within the well-shaped internal space 416 of the multi-component housing 402. The first component 404 has an access opening 418 that allows access to the well-shaped internal space 416 from above. In the assembled state, the first component 404 and the second component 406 are engaged, and the second component 406 is positioned so that it covers the access opening 418 of the first component 404 to the internal space 416.

[0087] The first component 404 has a first opening 420 and a second opening 422 opposite to the first opening 420. The first opening 420 is penetrated by a first extension 412, and the second opening 422 is penetrated by a second extension 414. A wall 424, formed by the second component 406, covers the access opening 418 of the first component 404 from above.

[0088] When assembling the electric fuse 400, the electrical conductor element 408 is attached to the first part 404 by guiding the second extension 414 and the first extension 412 through the first opening 420 and the second opening 422 of the first part 404 such that the molten portion 410 of the electrical conductor element 408 is located in the internal space 416 of the first part 404 (see, for example, Figures 4d and 4e). The first extension 412 can be pre-bent.

[0089] In the next step, the first part 404 (equipped with the electrical conductor element 408) and the second part 406 are slidably engaged with each other (see Figures 4g and 4h). In the engaged state, the wall 424 formed by the second part 406 covers the access opening 418 of the first part 404 from above (see Figure 4i). Thus, the molten portion 410 of the electrical conductor element 408 is positioned in the internal space of the multi-part housing 402, in a manner that is properly sealed to the outside. In the next step, the second extension 414 can be bent in at least a portion thereof. The bending can be done, for example, to engage with the outer surface portion of the second part 406, thereby properly attaching, or rather restraining, the first part 404 and the second part 406 to each other. In the illustrated embodiment, a portion of the second extension 414 is bent to correspond to a pre-bent portion of the first extension 412 (see Figures 4b and 4c).

[0090] In the illustrated embodiment, the cross-section of the first extension 412 of the electrical conductor element 408 corresponds in terms of form and dimensions to the cross-section of the first opening 420. Furthermore, the cross-section of the second extension 414 of the electrical conductor element 408 corresponds in terms of form and dimensions to the cross-section of the second opening 422.

[0091] In this assembled state, the first extension 412, which is made up of the electrical conductor element 408, seals the first opening 420 of the first component 404, and the second extension 414, which is made up of the electrical conductor element 408, seals the second opening 422 of the first component 404.

[0092] The walls of the multi-component housing 402, the first extension 412 of the electrical conductor element 408, and the second extension 414 of the electrical conductor element 408 together form a dustproof multi-component housing 402. The gap between the multi-component housing 402 and the first and second extensions 412 and 414 of the electrical conductor element 408 can be made small enough so that dust cannot pass through the gap. This prevents dust particles from entering the multi-component housing 402 from outside the electrical fuse 400, and protects the area around the electrical fuse 400 from particles resulting from the melting of the electrical conductor element 408.

[0093] As a result, the internal space 416 of the multi-component housing 402 can be properly sealed, and at the same time, the first component 404 and the second component 406 can be properly attached to each other without further connecting means.

[0094] Following the step of attaching the electrical conductor element 408 to the first component 404, the well-shaped internal space 416 can be filled with a filler material 426, for example, an arc extinguishing material, as schematically shown in Figure 4c). Advantageously, the access opening 418 is formed to be wide enough to easily fill the internal space 416 with the filler material 426 from above. Further advantage, the orientation of the first component 404 does not need to be changed while the first component 404 and the second component 406 are engaged with each other.

[0095] When the first part 404 and the second part 406 of the multi-part housing 402 are engaged, the wall 424 formed by the second part 406 adequately covers, or rather seals, the access opening 418 from the outside, so as to ensure that the filler material 426 is securely held inside the internal space 416.

[0096] Figures 5a) to 5c) show different diagrams of the electric fuse 500 according to the present invention in the fifth embodiment, and Figures 5d) to 5h) show different states of the electric fuse 500 during manufacturing in the fifth embodiment.

[0097] The electric fuse 500 comprises an electrically insulating multi-component housing 502 having a first component 504 and a second component 506. In the assembled state, the first component 504 and the second component 506 are slidably engaged with each other, as will be described in more detail below.

[0098] The electric fuse 500 further comprises an electric conductor element 508. In the illustrated embodiment, the electric conductor element 508 is made of a sheet of metal. The electric conductor element 508 comprises a molten portion 510, a first extension 512, and a second extension 514, all of which are integrally formed. The first extension 512 and the second extension 514 each extend longitudinally from both ends of the molten portion 510. The molten portion 510 of the electric conductor element 508 can be formed as, for example, parallel strips with a width reduced compared to the widths of the first extension 512 and the second extension 514.

[0099] In the assembled state, the multi-component housing 502 seals the molten portion 510 within the internal space 516 of the multi-component housing 502. The first component 504 has an access opening 518 that allows access to the internal space 516. In the assembled state, the first component 504 and the second component 506 are engaged, and the second component 506 is positioned so that it covers the access opening 518 of the first component 504 to the internal space 516.

[0100] The first component 504 further has a first opening 520 and a second opening 522 opposite to the first opening 520. The first opening 520 is penetrated by a first extension 512, and the second opening 522 is penetrated by a second extension 514. A (side) wall 524, formed by the second component 506, covers the access opening 518 of the first component 504.

[0101] When assembling the electric fuse 500, the electric conductor element 508 is attached to the first part 504 by guiding the first extension 512 and the second extension 514 of the electric conductor element 508 laterally through the first opening 520 and the second opening 522 of the first part 504, so that the molten portion 510 of the electric conductor element 508 is sealed within the internal space 516, or rather, present there (see Figures 5b and 5c). The first extension 512 can be bent in advance.

[0102] In the next step, the first part 504 (equipped with the electrical conductor element 508) and the second part 506 are slidably engaged with each other (see Figure 5f). In the engaged state, the (side) wall 524 formed by the second part 506 covers the access opening 518 of the first part 504 (see Figures 5g and 5h). Thus, the molten portion 510 of the electrical conductor element 508 is positioned in the internal space 516 of the multi-part housing 502, in a state that is properly sealed to the outside. In the next step, the second extension 514 can be bent in at least a portion thereof. The bending can be done, for example, to engage with the outer surface portion of the second part 506, thus properly attaching, or rather restraining, the first part 504 and the second part 506 to each other. Thus, no further means and / or steps for attachment, such as adhesive, are required. In the illustrated configuration, a portion of the second extension 514 is bent to correspond to a pre-bent portion of the first extension 512 (see Figures 5b and 5c).

[0103] In the illustrated embodiment, in the longitudinal cross-sectional view of the first part 504, the first opening 520 and the second opening 522 are formed in a W shape. The shape of the openings appropriately improves sealing performance against fine particles even when manufacturing tolerances do not allow for openings of sufficiently small dimensions. Although not shown, only one of the first and second openings can also be formed in a W shape. Furthermore, although not shown, the first opening and / or the second opening can be formed in a different shape, such as a V shape. Furthermore, although not shown, the first opening and / or the second opening can be formed in an inverted W shape or an inverted V shape.

[0104] In this assembled state, the first extension 512, which is made up of the electrical conductor element 508, seals the first opening 520 of the first component 504, and the second extension 514, which is made up of the electrical conductor element 508, seals the second opening 522 of the first component 504.

[0105] The walls of the multi-component housing 502, the first extension 512 of the electrical conductor element 508, and the second extension 514 of the electrical conductor element 508 together form a dustproof multi-component housing 502. The gap between the multi-component housing 502 and the first and second extensions 512 and 514 of the electrical conductor element 508 can be made small enough so that dust cannot pass through the gap. This prevents dust particles from entering the multi-component housing 502 from outside the electrical fuse 500, and protects the area around the electrical fuse 500 from particles resulting from the melting of the electrical conductor element 508. As a result, the internal space 516 of the multi-component housing 502 can be properly sealed, and the first component 504 and the second component 506 can be properly attached to each other without further connecting means.

[0106] Following the step of attaching the electrical conductor element 508 to the first component 504, the internal space 516 can be filled with a filler material 526, for example, an arc extinguishing material, as schematically shown in Figure 5c). Advantageously, the access opening 518 is broadly formed to allow for easy filling of the internal space 516 with the filler material 526. Once the first component 504 and the second component 506 of the multi-component housing 502 are engaged, the wall 524 formed by the second component 506 adequately covers, or rather seals, the access opening 518 from the outside, ensuring that the filler material 526 is securely held inside the internal space 516.

Claims

1. Electrical fuses (200; 300; 500), - An electrical conductor element (208;308;508) having a molten portion (210;310;510), and further having a first extension (212;312;512) and a second extension (214;314;514) formed integrally with the molten portion (210;310;510) and extending longitudinally from both ends of the molten portion (210;310;510), - An electrically insulating multi-component housing (202; 302; 502) that seals the molten portion (210; 310; 510) within the internal space (216; 316; 516) and Equipped with, The multi-component housing (202; 302; 502) comprises a first component (204; 304; 504) and a second component (206; 306; 506) slidably engaged with the first component (204; 304; 504), wherein the second component (206; 306; 506) is positioned to cover the access opening (218; 318; 518) of the first component to the internal space (216; 316; 516). The first extensions (212; 312; 512) and the second extensions (214; 314; 514) each have terminal regions, and both terminal regions are located outside the multi-component housing (202; 302; 502). The first component (204; 304; 504) has a first opening (220; 320; 520), The second part (206; 306; 506) has a second opening (222; 322; 522) opposite to the first opening (220; 320; 520) of the first part (204; 304; 504), Each of the above is such that the first opening is penetrated by the first extension (212; 312; 512), and the second opening is penetrated by the second extension (214; 314; 514). Electrical fuses (200; 300; 500).

2. The first extension (212; 312; 512) formed by the aforementioned electrical conductor elements (208; 308; 508) seals the first opening (220; 320; 520), The second extension (214; 314; 514), which is composed of the aforementioned electrical conductor elements (208; 308; 508), seals the second opening (222; 322; 522). The electrical fuse (200; 300; 500) according to claim 1.

3. The cross section of the first extension (212; 312) of the electrical conductor element (208; 308) perpendicular to the longitudinal direction corresponds in terms of form and dimensions to the cross section of the first opening (220; 320), and / or The cross section perpendicular to the longitudinal direction of the second extension (214; 314) of the electrical conductor element (208; 308) corresponds in terms of form and dimensions to the cross section of the second opening (222; 322), The electrical fuse (200; 300) according to claim 2.

4. The first opening (520) and the second opening (522) are formed in a V-shape or W-shape in a cross-sectional view of the multi-component housing on a plane parallel to the longitudinal direction of the molten portion (510) of the electrical conductor element (508). The electrical fuse (500) according to claim 2.

5. The aforementioned electrical conductor elements (208; 308; 508) are sheet metal. An electric fuse (200; 300; 500) according to any one of claims 1 to 4.

6. The aforementioned electric fuse (200; 300; 500) further comprises a filler material (226; 326; 526) that fills the internal space (216; 316; 516), An electrical fuse (200; 300; 500) according to any one of claims 1 to 5.

7. The filler material (226; 326; 526) is made of a material having arc extinguishing capabilities. The electrical fuse (200; 300; 500) according to claim 6.

8. The filler (226; 326; 526) consists of at least one of sand, silicone, glass beads, and ceramic beads. The electrical fuse (200; 300; 500) according to claim 6 or 7.

9. A method for manufacturing an electric fuse (200; 300; 500) according to any one of claims 1 to 8, a) A step of preparing an electrical conductor element (208;308;508) having a molten portion (210;310;510), and further having a first extension (212;312;512) and a second extension (214;314;514) formed integrally with the molten portion (210;310;510) and extending longitudinally from both ends of the molten portion (210;310;510), b) A step of preparing an electrically insulating multi-component housing (202;302;502) comprising a first component (204;304;504) and a second component (206;306;506), c) The step of introducing the electrical conductor elements (208; 308; 508) into the multi-component housing so that the molten portions (210; 310; 510) are sealed within the internal spaces (216; 316; 516) of the multi-component housing (202; 302; 502), d) The step of slidably engaging the first part and the second part with respect to each other, thereby covering the access openings (218; 318; 518) of the first part (204; 304; 504) to the internal space (216; 316; 516) with the second part (206; 306; 506). Includes, Step b) further includes, when the first part (204; 304; 504) and the second part (206; 306; 506) are engaged, providing a first opening (220; 320; 520) in the first part (204; 304; 504) and a second opening (222; 322; 522) in the second part (206; 306; 506) opposite to the first opening (220; 320; 520), Step c) further includes introducing the electrical conductor elements (208; 308; 508) through the first opening (220; 320; 520) such that the first opening (220; 320; 520) is penetrated by the first extension (212; 312; 512), and introducing the electrical conductor elements (208; 308; 508) through the second opening (222; 322; 522) such that the second opening (222; 322; 522) is penetrated by the second extension (214; 314; 514), method.

10. The above method further, e) Bending the first extensions (212; 312; 512) and / or the second extensions (214; 314; 514) so ​​that they at least partially abut against the outer wall of the multi-component housing (202; 302; 502). The method according to claim 9, including the method described in claim 9.

11. Step d) is preceded by filling the internal space (216; 316; 516) with filler (226; 326; 526) through the access opening (218; 318; 518). The method according to claim 9 or 10.

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