Method for manufacturing electrical element and electrical element

Abstract

The present disclosure relates to the field of electrical element manufacturing. Provided are a method for manufacturing an electrical element, and an electrical element. In the manufacturing method according to the present disclosure, a plurality of shell parts are formed into a shell by curing fluid plastic, and the shell and a conductor are formed into an integrated structure. In the manufacturing method according to the embodiments of the present disclosure, a cumbersome dispensing-based assembly process for the shell can be omitted, thereby simplifying the manufacturing process. In addition, the manufacturing method according to the embodiments of the present disclosure facilitates an improvement in the sealing performance of the shell, also saves a significant amount of time, and can also avoid the problem of adhesive overflowing on the surface of the shell after adhesive dispensing.

Description

Manufacturing methods of electrical components and electrical components

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411455656.2, filed on October 17, 2024, entitled "Method for Manufacturing Electrical Components and Electrical Components", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of electrical component manufacturing, and in particular to a method for manufacturing an electrical component and an electrical component thereof. Background Technology

[0004] Electrical components include shell-type devices such as fuses, which have a hollow shell and a conductor running through it. Therefore, the manufacturing process of such electrical components often involves the following steps: conductor preparation, shell preparation, shell adhesive application, shell assembly, cleaning and fixing, gap adhesive application, surface cleaning, resistance measurement, and baking and curing.

[0005] For fuses, the process also involves sand filling, gluing through sand holes, press-fitting clamps, clamp sealing, surface cleaning, and product testing. Therefore, the entire product manufacturing and assembly process is quite complex, and it suffers from low yield rates, high manufacturing costs, and the high cost of automated production lines.

[0006] The key factor leading to the above problems lies in the fabrication process of the outer shell of tubular devices. The plastic shell of tubular devices typically consists of two parts, an upper shell and a lower shell, which are injection molded separately and need to be bonded together by dispensing adhesive. However, during the dispensing process, the uniformity and consistency of the adhesive are often difficult to maintain consistently due to the influence of position and other factors.

[0007] If the outer casing is not firmly bonded or has gaps, it is difficult to guarantee the electrical insulation performance of the casing-type devices, and in severe cases, it can even damage the circuit in which the casing-type devices are located. In addition, during the multiple dispensing process, excess glue seeps out, requiring additional cleaning procedures, and glue residue on the exposed conductors at both ends of the casing has a certain probability of affecting the product's performance, resulting in many drawbacks.

[0008] Summary of the Invention

[0009] In view of the above, this disclosure provides a method for manufacturing an electrical component and an electrical component, with the aim of solving the above-mentioned technical problems to a certain extent.

[0010] The first aspect of this disclosure provides a method for manufacturing an electrical component, the electrical component including a housing and a conductor penetrating the housing, the manufacturing method comprising:

[0011] The material preparation and mold closing steps are performed inside the mold, and the mold is closed to injection mold multiple shell parts.

[0012] The transfer step involves transferring multiple shells and conductors to a processing location, assembling multiple shells, and passing the conductors through the assembled multiple shells.

[0013] The assembly and molding process involves closing the mold, injecting fluid plastic between adjacent shell parts, and injecting fluid plastic between the conductor and the shell part adjacent to the conductor. The fluid plastic is then cured to form a shell and a combined structure of the shell and conductor.

[0014] During the assembly and mold closing step, a material preparation and mold closing step is simultaneously performed inside the mold for the next electrical component to form multiple shells for the next electrical component;

[0015] After the assembly and molding step, the transfer step and assembly and molding step are performed sequentially for the next electrical component to form the combined structure of the next electrical component.

[0016] Optionally, the material preparation and mold closing step further includes placing the conductor in the waiting position in the mold, and the transfer step further includes transferring the conductor from the waiting position to the processing position.

[0017] Optionally, the material preparation and mold closing step further includes: forming multiple shell parts at different locations, wherein at least two of the multiple shell parts are staggered in the extension direction of the shell.

[0018] Optionally, the assembly molding step further includes: the fluid plastic is also located on and solidified on the outer side of at least one of the adjacent shell portions.

[0019] Optionally, the material preparation and molding step further includes forming a recessed receiving portion on the outer side of at least one of the plurality of shell portions, wherein the receiving portion is configured to receive fluid plastic.

[0020] Optionally, the material preparation and molding step further includes forming a receiving portion on the outer side of each shell portion, wherein adjacent shell portions are constructed such that the receiving portions located on the adjacent shell portions engage with each other to provide space for receiving fluid plastic.

[0021] Optionally, the material preparation and mold closing step further includes: constructing a shell portion having a receiving portion, such that the receiving portion has a first portion that opens from an edge portion of the shell portion configured to connect with an adjacent shell portion, and such that the receiving portion has a second portion that communicates with the first portion on the side of the first portion away from the edge portion, that is, such that the receiving portion has a first portion and a second portion, the first portion communicating with the second portion, the first portion being located at an edge portion where the shell portion connects with another shell portion, and the second portion being located on the side of the first portion away from the edge portion; the second portion has a first width at a first position and a second width at a second position, the first width being smaller than the second width, and the first position being closer to the first portion relative to the second position.

[0022] Optionally, the material preparation and molding step further includes: constructing a shell portion having a receiving portion, such that the width of the second portion gradually increases from the side where the first portion is located to the side away from the first portion.

[0023] Optionally, the material preparation and molding step further includes: constructing a shell portion having a receiving portion, from the side where the first portion is located to the side away from the first portion, such that the width of the second portion has at least one abrupt change.

[0024] Optionally, the material preparation and mold closing step further includes: constructing a shell portion having a receiving portion, such that the receiving portion has a plurality of first portions spaced apart along the edge portion, and such that the receiving portion has a plurality of second portions, and such that each second portion is connected to a corresponding first portion.

[0025] Optionally, the material preparation and mold closing step further includes: constructing a shell portion having a receiving portion, such that the inner side of the shell portion having the receiving portion has a protrusion corresponding to the receiving portion in position.

[0026] Optionally, the material preparation and mold closing step further includes: forming multiple receiving portions on the outer side of each shell portion, constructing a shell portion having receiving portions, such that the shell portion having receiving portions has a protrusion corresponding to each receiving portion, and connecting adjacent protrusions.

[0027] Optionally, the material preparation and molding step further includes: forming a recessed filling portion on the edge portion of the shell portion configured to connect adjacent shell portions; wherein adjacent shell portions are constructed such that the filling portions located on the adjacent shell portions respectively engage with each other to provide space for receiving fluid plastic; on the shell portion having the receiving portion, the filling portion communicates with the receiving portion, and the fluid plastic is configured to be injected into the filling portion from the receiving portion.

[0028] Optionally, the material preparation and molding step further includes: forming a recessed filling portion on the edge portion of the shell portion configured to connect adjacent shell portions, the filling portion being configured to open from the outer side portion of the shell portion; wherein adjacent shell portions are constructed such that the filling portions located on the adjacent shell portions respectively engage with each other to provide space for accommodating fluid plastic.

[0029] Optionally, the material preparation and mold closing step further includes: constructing adjacent shell portions such that the joint formed by the adjacent shell portions has a directional extension section located on the side where the internal space of the shell is located; wherein the directional extension section extends from the filling portion to the internal space of the shell and changes its extension direction at least once.

[0030] Optionally, the material preparation and mold closing step further includes: forming a protruding positioning part on the inner side of the shell part, and configuring the portion of the positioning part that extends beyond the shell part to connect adjacent shell parts; forming a recess on the inner side of the shell part adjacent to the shell part where the positioning part is located, the recess being configured to allow the positioning part to be inserted when assembling multiple shell parts.

[0031] Optionally, the material preparation and mold closing step further includes: forming a protruding structure on the inner side of the shell portion, and constructing the shell portion such that the shell portion has a reinforcing structure connecting the protruding structure and the inner side of the shell portion.

[0032] Optionally, the assembly and molding step further includes: constructing a conductor such that the conductor has through holes connecting both sides of the conductor, and injecting fluid plastic into the through holes to connect the cured fluid plastic located on both sides of the conductor after curing; wherein the two sides of the conductor face the two shell portions respectively.

[0033] Optionally, the manufacturing method further includes testing and processing steps for the composite structure: testing the resistance of the conductors of the composite structure; filling the housing of the composite structure with insulating particles and sealing the housing to form an electrical component; and testing the electrical and insulation properties of the electrical component.

[0034] A second aspect of this disclosure provides an electrical component, the electrical component including a housing, the housing comprising:

[0035] Multiple shells, configured for injection molding;

[0036] Connecting members are located between adjacent shell portions and are configured to connect the assembled shell portions to form a shell.

[0037] The connecting member portion is located on the outer side of at least one of the adjacent shell portions.

[0038] Optionally, at least one of the multiple shell portions has a recessed receiving portion formed on its outer side, wherein the receiving portion is configured to receive a portion of the connecting member.

[0039] Optionally, each shell portion has a receiving portion formed on its outer side, and adjacent shell portions are configured such that the receiving portions located on adjacent shell portions can engage with each other to provide space for accommodating the portion of the connecting member.

[0040] Optionally, the receiving portion has a first portion that opens from the edge portion of the shell portion configured to connect adjacent shell portions, and the receiving portion has a second portion that communicates with the first portion on the side of the first portion away from the edge portion. That is, the receiving portion has a first portion and a second portion, the first portion communicates with the second portion, the first portion is located at the edge portion where one shell portion connects to another shell portion, and the second portion is located on the side of the first portion away from the edge portion; the second portion has a first width at a first position and a second width at a second position, the first width being smaller than the second width, and the first position being closer to the first portion relative to the second position.

[0041] Optionally, the width of the second part gradually increases from the side where the first part is located to the side away from the first part.

[0042] Optionally, the width of the second part has at least one abrupt change from the side where the first part is located to the side away from the first part.

[0043] Optionally, the receiving portion has a plurality of first portions spaced apart along the edge portion, and the receiving portion has a plurality of second portions, each of which is in communication with a corresponding first portion.

[0044] Optionally, the inner side of the shell portion has a protrusion that corresponds in position to the receiving portion, and the protrusion protrudes from the inner side of the shell portion in a direction away from the inner side of the shell portion.

[0045] Optionally, each shell portion has multiple receiving portions formed on its outer side, and the inner side of the shell has protrusions that correspond one-to-one with the receiving portions formed on the shell, with adjacent protrusions connected to each other.

[0046] Optionally, adjacent shell portions are configured such that the joint formed by the adjacent shell portions has a directional extension section located on the side where the internal space of the shell is located; wherein, the shell portion is configured to form a recessed filling portion on the edge portion connecting the adjacent shell portion, the directional extension section extends from the filling portion to the internal space of the shell, and changes its extension direction at least once; one of the adjacent shell portions forms a stepped portion protruding from the inner side of the shell portion, the stepped portion and the edge portion connecting the adjacent shell portion are configured to connect with the edge portion connecting the other of the adjacent shell portions to form a stepped surface; wherein, the inner side portion of the other of the adjacent shell portions engages with the stepped surface to form a directional extension section; the stepped portion is formed on the protrusion.

[0047] Optionally, the shell portion is configured to have recessed filling portions formed on the edge portions connecting adjacent shell portions; wherein, the adjacent shell portions are configured such that the filling portions located on the adjacent shell portions respectively engage with each other to provide space for accommodating the connecting member.

[0048] Optionally, at least one of the multiple shells has a recessed receiving portion formed on its outer side, wherein the receiving portion is configured to receive a portion of the connecting member; adjacent shells are configured such that the receiving portion on the same shell communicates with the filling portion.

[0049] Optionally, adjacent shell portions are configured such that the joint formed by the adjacent shell portions has a directional extension section located on the side where the internal space of the shell is located; wherein the directional extension section extends from the filling portion to the internal space of the shell and changes its extension direction at least once.

[0050] Optionally, one of the adjacent shell portions forms a stepped portion protruding from the inner side of the shell portion. The stepped portion is configured to connect with the edge portion of the adjacent shell portion to the edge portion of the other adjacent shell portion to form a stepped surface. That is, the stepped portion is connected with the edge portion of the two adjacent shell portions to the edge portion of the other adjacent shell portion to form a stepped surface. The edge portion of the other adjacent shell portion is configured to engage with the stepped surface to form a directional extension segment. That is, the edge portion of the other adjacent shell portion to the first adjacent shell portion engages with the stepped surface to form a directional extension segment.

[0051] Optionally, a protruding positioning portion is formed on the inner side of the shell portion, and the portion of the positioning portion extending beyond the shell portion is configured to connect adjacent shell portions; a recess corresponding to the positioning portion is formed on the inner side of another shell portion adjacent to the shell portion where the positioning portion is located, wherein the recess is configured to allow the positioning portion to be inserted when multiple shell portions are combined.

[0052] Optionally, one of the adjacent shell portions forms a stepped portion protruding from the inner side of the shell portion. The stepped portion is configured to connect with the edge portion of the adjacent shell portion to the edge portion of the other adjacent shell portion to form a stepped surface. That is, the stepped portion is connected with the edge portion of the two adjacent shell portions to the edge portion of the other adjacent shell portion to form a stepped surface. The edge portion of the other adjacent shell portion is configured to engage with the stepped surface to form a joint. That is, the edge portion of the other adjacent shell portion to the first shell portion engages with the stepped surface to form a joint. The joint has a deflected extension segment that changes the direction of extension. A recess is formed in the stepped portion.

[0053] Optionally, the inner side of the shell portion has a protruding structure with a recess, and the shell portion has a reinforcing structure connecting the protruding structure and the inner side of the shell portion.

[0054] Optionally, the electrical component also includes a conductor that penetrates the housing; wherein a connecting member is also located between the conductor and the housing to connect the housing and the conductor; the conductor has a through hole connecting both sides of the conductor, and a portion of the connecting member passes through the through hole to connect portions of the connecting members located on both sides of the conductor; both sides of the conductor face the two housing portions respectively.

[0055] According to the manufacturing method provided in this disclosure, the aforementioned plurality of shell parts are assembled into a shell by curing fluid plastic, and the shell and conductor are combined into a composite structure. The manufacturing method provided in the embodiments of this disclosure omits the cumbersome assembly process based on dispensing adhesive to the shell, simplifying the manufacturing process. Furthermore, the manufacturing method provided in the embodiments of this disclosure improves the sealing performance of the shell, saves a significant amount of time, and avoids the problem of adhesive overflow on the surface of the shell after dispensing.

[0056] To make the above-mentioned objects, features and advantages of this disclosure more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0057] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this disclosure and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0058] Figure 1 shows a schematic flowchart of a method for manufacturing an electrical component according to an embodiment of the present disclosure.

[0059] Figure 2 shows a schematic flowchart of a continuous manufacturing process for a method of manufacturing an electrical component according to an embodiment of the present disclosure.

[0060] Figure 3 shows a schematic diagram of a three-dimensional view of a fuse provided according to an embodiment of the present disclosure.

[0061] Figure 4 shows a schematic diagram of a three-dimensional view of a portion of the structure of a fuse provided according to an embodiment of the present disclosure.

[0062] Figure 5 shows a schematic diagram of a three-dimensional view of a partial structure of another fuse provided according to an embodiment of the present disclosure.

[0063] Figure 6 shows a schematic diagram of a partial view of the fuse in Figure 3.

[0064] Figure 7 shows a schematic cross-sectional view of a fuse provided according to an embodiment of the present disclosure.

[0065] Figure 8 shows a schematic diagram of a three-dimensional view of the housing of a fuse provided according to an embodiment of the present disclosure.

[0066] Figure 9 shows a schematic three-dimensional view of another housing portion of a fuse provided according to an embodiment of the present disclosure.

[0067] Figure 10 shows a schematic diagram of a three-dimensional view of a portion of the structure of a fuse provided according to an embodiment of the present disclosure.

[0068] Figure 11 shows a schematic diagram of a partial view of the fuse in Figure 8.

[0069] Figure 12 shows a schematic cross-sectional view of a fuse provided according to an embodiment of the present disclosure.

[0070] Figure 13 shows a schematic diagram of the cross-sectional view of the fuse in Figure 1.

[0071] Figure 14 shows a schematic diagram of a partial view of the fuse in Figure 11.

[0072] Figure 15 shows a three-dimensional schematic diagram of the fuse housing in Figure 1.

[0073] Figure 16 shows another three-dimensional schematic diagram of the fuse housing in Figure 1.

[0074] Figure label:

[0075] 10-Shell; 12-Shell section; 14-Receiving section; 16-First part; 18-Second part; 20-Protrusion; 22-Filling part; 24-Seam; 26-Deflected extension section; 28-Stepped section; 30-Edge section; 32-Positioning part; 34-Recess; 36-Reinforcing structure; 38-Connecting member; 40-Conductor; 42-Through hole; 44-Sand vibration hole; 46-Protruding structure. Detailed Implementation

[0076] The technical solutions of this disclosure will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0077] In the description of this disclosure, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0078] In the description of this disclosure, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0079] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this disclosure.

[0080] According to a first aspect of the present disclosure, a method for manufacturing an electrical component is provided. The steps of the method for manufacturing the electrical component will be specifically described below with reference to Figures 1 to 16.

[0081] According to a first aspect of the present disclosure, a method for manufacturing an electrical component is provided. Referring to FIG1, the electrical component includes a housing 10 and a conductor 40 penetrating the housing 10. The manufacturing method includes the following steps:

[0082] The material preparation and mold closing step S110 is performed inside the mold, and the mold is closed to injection mold multiple shell parts 12.

[0083] In the transfer step S120, the plurality of shell portions 12 and conductors 40 are transferred to the processing position, the plurality of shell portions 12 are assembled, and the conductors 40 are passed through the assembled plurality of shell portions 12.

[0084] In the assembly and molding step S130, the mold is closed, fluid plastic is injected between adjacent shell portions 12, and fluid plastic is injected between the conductor 40 and the shell portion 12 adjacent to the conductor 40. The fluid plastic is cured to form the shell 10 and to form a combined structure of the shell 10 and the conductor 40.

[0085] Thus, according to the manufacturing method provided in this embodiment, the plurality of shell portions 12 are assembled into a shell 10 by curing fluid plastic, and the shell 10 and conductor 40 are combined into a composite structure. The manufacturing method provided in this embodiment eliminates the cumbersome assembly process based on dispensing adhesive to the shell 10, simplifying the manufacturing process. Furthermore, the manufacturing method provided in this embodiment improves the sealing performance of the shell 10, saves a significant amount of time, and avoids the problem of adhesive overflow on the surface of the shell 10 after dispensing. In this embodiment, during the assembly and molding step, a material preparation and molding step is simultaneously performed within the mold for the next electrical component to form the plurality of shell portions 12 of the next electrical component.

[0086] In this embodiment, after the assembly and molding step, a transfer step and an assembly and molding step are sequentially performed for the next electrical component to form the combined structure of the next electrical component.

[0087] As shown in Figure 2, next, according to the manufacturing method provided in the embodiments of this disclosure, for the electrical component to be produced, in the assembly and molding step, not only is the combination structure of the housing 10 and conductor 40 of the electrical component to be produced manufactured in the form of injecting fluid plastic and curing fluid plastic, but also, at the same time as the assembly and molding step is performed, the material preparation and molding step is performed simultaneously for the next electrical component to be produced after the current electrical component (refer to the nth electrical component in Figure 2, where n is a positive integer) (that is, the (n+1)th electrical component), so as to form multiple shells 12 of the next electrical component.

[0088] In other words, while assembling the current electrical component's assembly structure, the manufacturing of multiple housings 12 for the next electrical component has already begun simultaneously. Subsequently, after the assembly and molding step of the current electrical component, that is, after the material preparation and molding step of the next electrical component, a transfer step and an assembly and molding step are further performed for the next electrical component to produce the assembly structure of the housing 10 and conductor 40 of the next electrical component. At this time, the "next electrical component" is used as the "current electrical component" currently being produced, and the material preparation and molding step is again performed synchronously with the assembly and molding step of that electrical component. After the material preparation and molding step, the transfer step and the assembly and molding step are continued to be performed to produce the assembly structure of subsequent electrical components.

[0089] Therefore, according to the manufacturing method provided in the embodiments of this disclosure, when the assembly and molding step of the previous electrical component is executed, the material preparation and molding step is started to form the plurality of housing parts 12 of the next electrical component, and the transfer step and assembly and molding step of the next electrical component are executed accordingly. In this way, a cycle is formed in the manufacturing steps.

[0090] In Figure 2, arrows represent the timing of step execution, indicating that the step pointed to by the arrow is executed after the step at the starting position of the arrow. Next, in Figure 2, two horizontally parallel steps indicate that these two steps are executed synchronously. That is, the assembly and mold-closing step of the nth electrical component and the material preparation and mold-closing step of the (n+1)th electrical component are executed synchronously. In other words, the assembly and mold-closing step of the current electrical component and the material preparation and mold-closing step of the next electrical component, as described above, are executed synchronously. Furthermore, in Figure 2, the dashed box indicates that there is one mold-closing operation within the steps within the dashed box. Therefore, as can be seen from Figure 2, the assembly and mold-closing step of the nth electrical component and the material preparation and mold-closing step of the (n+1)th electrical component share one mold-closing operation.

[0091] According to the manufacturing method provided in the embodiments of this disclosure, on the one hand, the manufacturing method is ensured to be carried out continuously and efficiently in the manner described above, that is, to ensure the continuous production of electrical components, thereby facilitating the efficient production of electrical components. On the other hand, the manufacturing method provided in the embodiments of this disclosure cleverly reuses the mold closing operation to achieve high efficiency, which will be explained in detail in the following description.

[0092] The manufacturing method provided in this disclosure aims to simplify the production process of electrical components, specifically to simplify the production process of the combined structure formed by the housing 10 and the conductor 40 of the electrical components, by optimizing both the local steps and the overall process of the manufacturing method.

[0093] Regarding the optimization of certain steps in the manufacturing method, as mentioned above in the description, the optimization is mainly reflected in the material preparation and mold closing steps and the assembly and mold closing steps. In these two steps, the manufacturing method provided according to the embodiments of this disclosure does not rely on cumbersome assembly steps based on dispensing operations. Instead, in the material preparation and mold closing step, the multiple shell parts 12 of the housing 10 to be formed are formed by the first mold closing of the mold. Here, the multiple shell parts 12 are produced as components of electrical components. Then, in the assembly and mold closing step, a second mold closing is performed. In the mold, fluid plastic is injected using injection molding to connect these shell parts 12 and conductors 40 into a whole to form a combined structure.

[0094] Therefore, the optimization of certain steps in the manufacturing process is mainly reflected in the fact that the material preparation and mold closing steps and the assembly and mold closing steps are significantly superior to the assembly steps based on dispensing operations. This is because injection molding has significantly higher uniformity, consistency, and sealing performance than dispensing operations, thus effectively maintaining product stability. During the process, compared to dispensing operations, material (for injection molding, the material is the aforementioned fluid plastic; for dispensing, the material is the glue itself) does not easily overflow in injection molding, and repeated cleaning is not required. Therefore, there is basically no need to consider the impact of residual material on conductor 40 or even the performance of electrical components during the injection molding process.

[0095] Specifically, due to the influence of injection pressure and high-temperature fluid conditions, the material's adhesion performance to the shell 12 is superior to that of adhesive bonding in dispensing operations. The internal sealing of the electrical component's shell 10 is also better, and there is no risk of adhesive leakage on the product surface. Therefore, the installation and fixing of clamps, the cleaning of overflowing adhesive, and the baking and curing process can be directly eliminated. This not only simplifies the steps required in the process flow but also solves a series of product quality problems caused by the instability of manual or equipment dispensing and the unstable control of adhesive volume due to equipment fluctuations.

[0096] The optimization of the overall manufacturing process, as mentioned above, essentially involves reusing the mold-closing operation provided by the manufacturing method according to the embodiments of this disclosure. As is well known, during injection molding, the mold is in a closed state, and each injection is performed while the mold is closed. Referring to the above description of the optimization of specific steps in the manufacturing method, the manufacturing method provided by the embodiments of this disclosure performs two mold-closing operations in the material preparation and assembly / mold-closing steps. For the same electrical component, the first mold-closing corresponds to the first injection molding, which produces multiple shell portions 12 of the housing 10 of the electrical component. The second mold-closing corresponds to the second injection molding, which combines and connects these shell portions 12 and the conductor 40 into a combined structure.

[0097] In other words, for the same electrical component, the first mold closing involves injection molding the parts of the electrical component, and the second mold closing involves injection molding the connection between these parts and the conductor 40. Therefore, compared to a simple linear production process, the manufacturing method provided according to the embodiments of this disclosure always reuses the second mold closing, that is, the mold closing in the assembly mold closing step. When the mold is closed for the second time, the first mold closing and the first injection molding of the next electrical component are performed simultaneously in the mold, forming multiple shell parts 12 of the next electrical component. Therefore, the mold closing process is fully utilized from the overall flow of the manufacturing method.

[0098] According to the manufacturing method provided in the embodiments of this disclosure, the material preparation and mold closing step may further include placing the conductor 40 in the waiting position in the mold, and the transfer step may further include transferring the conductor 40 from the waiting position to the processing position.

[0099] Thus, according to the manufacturing method provided in the embodiments of this disclosure, since a material preparation and mold closing step is performed for the next electrical component after the assembly and mold closing step of the currently produced electrical component, the material preparation and mold closing step for the next electrical component after the currently produced electrical component also includes, as mentioned above, placing the conductor 40 of the next electrical component in the waiting position in the mold, and then the conductor 40 will be transferred from the waiting position to the processing position in a subsequent transfer step.

[0100] The manufacturing method provided according to the embodiments of this disclosure will be further described below in conjunction with the actual production process.

[0101] In this embodiment, the electronic component may specifically be, for example, a fuse. The fuse housing 10, commonly referred to as the casing, may be, for example, a square, circular, or elliptical structure (these shapes can all be used as the cross-sectional shape of the housing 10), and the casing material may include, but is not limited to, materials that can be injection molded. Optionally, the casing material can be a thermoplastic material with flame-retardant and cushioning effects, such as PA6T+GF (PA6T, nylon 6T; GF, glass fiber, PA6T+GF is glass fiber reinforced nylon 6T, the same below), PA5T+GF (glass fiber reinforced nylon 5T, PA5T), PA10T+GF (glass fiber reinforced nylon 10T), PA66+GF (glass fiber reinforced nylon 66, PA66), PEEK+GF (glass fiber reinforced polyetheretherketone; PEEK, Polyetheretherketone), or PPSU+GF (glass fiber reinforced polyphenylene sulfone resin; PPSU, Polyphenylene sulfone resins), etc. The conductor 40 of the fuse is what is commonly referred to as the fusible element.

[0102] In the embodiments, it is feasible to use the same or different materials for the shell 12 and the fluid plastic.

[0103] In the embodiments, the injection molding process that forms the combined structure is essentially a single-stage injection molding process. Specifically, the manufacturing method provided according to the embodiments of this disclosure can be implemented in the following manner.

[0104] The fuse is positioned and installed using tooling fixtures, and a corresponding automated loading and unloading device (robotic arm and clamping and positioning fixture) is used. The actions and movement paths of the automated loading and unloading device are adjusted and set to prepare for the injection molding of the fuse.

[0105] Next, the automated loading device grabs the fuse, positions it and installs it in the reserved position of the fuse in the mold, which is the operation position mentioned in the method description above. This position can be, for example, the recess 34 that accommodates the fuse, so that the fuse set at this position does not interfere with the mold closing when the mold is closed.

[0106] Then, the first mold closing action is performed, forming the fuse using an integrated mold (with multiple cavities and mechanical mechanisms within the mold cavity). During the first mold closing, multiple shell parts 12 of the fuse housing are simultaneously formed (for example, there are two shell parts 12, which are designated as the upper shell part 12 and the lower shell part 12 based on their docking direction). After mold opening, the multiple shell parts after injection molding are switched and transferred to the corresponding assembly processing positions (i.e., the spatial positions of the multiple shell parts change after transfer), and the fuse element is inserted into the pre-reserved processing position in the mold (this processing position is located at the center of the multiple shell parts). Before the second mold closing, the relative positions of the fuse element and the multiple shell parts are determined, but they are in an unassembled state before being connected.

[0107] Based on the unassembled state described above, a second mold closing is performed. At this time, the embedded mold for the fuse element (forming the combined structure of the fuse element and the shell) is simultaneously performed at different cavities in the mold, as well as the upper shell portion 12 and lower shell portion 12 of the next fuse. After each single mold closing action, the upper shell portion 12 and lower shell portion 12 of the fuse shell of the next fuse can be formed simultaneously, as well as the combined structure formed by the embedded mold of the fuse element of the currently manufactured fuse. Thus, the two injection molding processes on the two fuses are completed simultaneously in one mold closing action without manual intervention.

[0108] After the injection molding is completed following the second mold closing, the mold opening action is performed. The mold mechanical mechanism completes the displacement of the molding chamber. As an example, in the embodiment, the multiple shell-forming chambers mentioned above can be an independent chamber, and the chamber assembling these shells and fuses is another independent chamber. These two chambers can be arranged on the same slide rail, thus realizing the overall displacement of the chambers within the mold. In other words, the chambers that have completed the multiple shell forming are moved to the position where they are to be assembled and molded, so that assembly and mold closing can be carried out. The other chamber, since the assembly of the combined structure has been completed in the previous mold closing, can be translated to a position so that an automated gripping device can remove the combined structure from the chamber.

[0109] The automated loading and unloading device picks up a new fuse element (i.e., the fuse element of the next fuse), positions and installs it, and simultaneously removes the finished part (i.e., the combination structure of the fuse shell and fuse element) that has been integrally injection molded from the mold within one shift stroke. Subsequently, the automated loading and unloading device picks up a new fuse element (the fuse element of the next fuse), and waits at the designated stroke position (i.e., the waiting position mentioned above) for the current injection molding to be completed, preparing for the next fuse element embedding injection molding, and so on in a continuous cycle.

[0110] In the above implementation process, the three actions mentioned above (i.e., the material preparation and mold closing steps, the transfer step, and the assembly and mold closing steps performed for the same fuse) are connected to form the injection molding cycle of the finished part. The injection molding cycle time is generally 20-100 seconds, but can also be 30-60 seconds, 40-80 seconds, etc. By repeating the above mold opening and closing actions, and automating the loading and unloading of injection molded inserts (fuse elements) and injection molded finished products (combined structures), stable and reliable automated continuous production operations can be achieved.

[0111] According to the manufacturing method provided in the embodiments of this disclosure, the material preparation and mold closing step may further include: forming a plurality of shell portions 12 at different positions, wherein at least two of the aforementioned plurality of shell portions 12 are staggered in the extension direction of the shell 10. In the embodiments, this staggered arrangement facilitates the simplification of the movement of the various mechanisms within the mold, and at the same time facilitates the conversion of the position of the cavity used for mold assembly when embedding the conductor in the assembly and mold closing step.

[0112] In the embodiments, the term "the extension direction of the housing 10" as used herein should be understood to mean the following: the housing 10 has a regular or relatively regular geometric shape, and the extension direction of the features that can be obtained from the geometric shape and used to determine the specific shape of the geometric shape can be used as the extension direction of the housing 10.

[0113] Here, taking a prism as an example, a prism can be considered a regular geometric shape. The edge between its two bases is a feature that can be used to determine the specific shape of the prism. The direction of extension of this edge is the direction of extension of the prism.

[0114] Furthermore, for relatively regular geometric shapes, let's take a prism in a more general sense as an example. A prism has two identical bases, which can be regular geometric shapes, such as squares (in which case the prism is a quadrangular prism), circles (in which case the prism may be a cylinder), and ellipses, as mentioned above. Taking an elliptical base as an example, the side face sandwiched between the two bases is a feature that can be used to determine the specific shape of the prism, and the direction of extension of this side face is the direction of extension of the prism.

[0115] In an embodiment, as an example, the housing 10 of an electrical component manufactured by the manufacturing method provided in the present disclosure may be, for example, a cylinder, with a bottom surface that is, for example, circular, so that the housing 10 is formed as a cylinder, or the bottom surface may be, for example, square (rectangular), so that the housing 10 is, for example, a cuboid.

[0116] It should be noted that in practical applications, for example, in an example where the housing 10 is a cuboid, the adjacent sides of the housing 10 can be transitioned using rounded corners. Similarly, in an example where the housing 10 is a cylinder, the bottom surface and the sides of the housing 10 can also be transitioned using rounded corners or chamfers. These transition methods mean that the shape of the housing 10 is not strictly a cuboid or a cylinder. However, it should be understood that the cuboid shape, cylindrical shape, and other shapes not specifically described, of the electrical components manufactured according to the manufacturing method provided in this disclosure, and whose housing 10 has these shapes, do not contradict these shapes due to the rounded corners and / or chamfers of the housing 10 itself.

[0117] In this embodiment, taking a cuboid-shaped shell 10 as an example, its extension direction can have a length direction, a width direction, and a height direction according to its length, width, and height. For the length and width directions, when they are horizontal, they can be referred to in space as the left-right direction and the front-back direction. That is, at least two of the aforementioned plurality of shell portions 12 can be offset in the left-right direction or offset in the front-back direction. The meaning of "offset" here includes both having a certain interval in the corresponding direction, such as the left-right direction, and also having a certain interval perpendicular to the left-right direction, such as the height direction.

[0118] Furthermore, according to the manufacturing method provided in this disclosure, the staggering of at least two shell portions 12 means that each of the shell portions 12 referred to by the at least two shell portions 12 can have a corresponding other shell portion 12, and the two are staggered in space as described above. As an example, the shell 10 can be formed from two shell portions 12, for example, the shell 10 can be a cuboid shape as described above, and the two shell portions 12 can be connected together along the height direction. In this example, the two shell portions 12 can be staggered from each other in the width direction of the shell 10 during molding.

[0119] Furthermore, in the embodiments, the staggering of at least two shell portions 12 should be understood as the shell portions 12 being staggered in spatial position as described above, while the orientation of the shell portions 12 themselves in space is not specifically limited. In other words, during the process of assembling different shell portions 12 into a combined structure after molding, different clamping motion paths can be configured for the shell portions 12 according to their positions and spatial orientations. Specifically, the shell portion 12 can be clamped to the processing position through translational motion, or it can be clamped to the processing position through a combination of translational motion and rotation.

[0120] According to the manufacturing method provided in the embodiments of this disclosure, the assembly and molding step may further include: fluid plastic is also located and solidified on the outer side of at least one of the adjacent shell portions 12.

[0121] In this embodiment, when adjacent shell portions 12 are connected, the fluid plastic is located on the outer side of at least one of them. Thus, after the fluid plastic cures, it can generally include portions between adjacent shell portions 12 for connecting them, and can also include portions located on the outer side of at least one shell portion 12. This portion is connected to the plastic between the shell portions 12 by being attached to the outer side of at least one shell portion 12. The plastic attached to the outer side of at least one shell portion 12 provides additional adhesion between the plastic and the attached shell portion 12, thereby ensuring a better connection effect after the fluid plastic has cured.

[0122] In this embodiment, the plastic portion located on the outside of at least one shell portion 12 is referred to herein as a connecting member 38. As an example, the connecting member 38 may protrude from the outside of the shell portion 12 to which it is attached. However, in other examples, the connecting member 38 may also fill within some recessed features pre-formed during the material preparation and molding step on the outside of the shell portion 12, thereby becoming flush with the outside of the shell portion 12. These examples will be described in detail below.

[0123] According to the manufacturing method provided in the embodiments of this disclosure, as mentioned above, the material preparation and mold closing step may further include: forming a recessed receiving portion 14 on the outer side of at least one of the plurality of shell portions 12, wherein the receiving portion 14 is configured to receive fluid plastic. This facilitates defining the shape of the connecting member 38 and enables the execution of the injection molding process.

[0124] According to the manufacturing method provided in the embodiments of this disclosure, the material preparation and molding step may further include: forming a receiving portion 14 on the outer side of each shell portion 12, wherein adjacent shell portions 12 are constructed such that the receiving portions 14 located on adjacent shell portions 12 respectively engage with each other to provide space for receiving fluid plastic.

[0125] In the embodiment, the connecting member 38 formed by the cured injection-molded plastic is distributed in a portion of the receiving portion 14 of one of the adjacent shell portions 12 and in a portion of the receiving portion 14 of the other shell portion 12 that is in a different location. These two portions are connected together and attached to the corresponding shell portions 12 respectively, thereby providing a greater bonding force for the connection of the adjacent shell portions 12 and thus obtaining better connection reliability.

[0126] According to the manufacturing method provided in the embodiments of this disclosure, the material preparation and mold closing step may further include: constructing a shell portion 12 having a receiving portion 14, such that the receiving portion 14 has a first portion 16 that opens from an edge portion 30 of the shell portion 12 configured to connect adjacent shell portions 12, and such that the receiving portion 14 has a second portion 18 located on the side of the first portion 16 away from the edge portion 30 and communicating with the first portion 16, that is, such that the receiving portion 14 has a first portion 16 and a second portion 18, the first portion 16 communicating with the second portion 18, the first portion 16 being located at the edge portion 30 where the shell portion 12 is connected to another shell portion 12, the second portion 18 being located on the side of the first portion 16 away from the edge portion 30, the second portion 18 having a first width at a first position and a second width at a second position, the first width being smaller than the second width, and the first position being closer to the first portion 16 than the second position.

[0127] First, it needs to be clarified that the term "edge portion 30" mentioned above is a term derived from the thickness of the shell portion 12. Specifically, since a shell portion 12 forms a housing 10 with other shell portions 12, i.e., a hollow tube shell such as a fuse, each shell portion 12 essentially serves as part of the wall portion defining the hollow portion of the housing 10, and the wall portion reflects the thickness of the housing 10. That is, the shape of each shell portion 12 is generally recessed to one side in space to define a portion of the space of the hollow portion of the ultimately formed housing 10. Therefore, the thickness of each shell portion 12 is the thickness of the wall portion of the corresponding part of the housing 10.

[0128] After clarifying the concept of the thickness of the shell portion 12, the edge portion 30 is based on the concept of the thickness of the shell portion 12, and is essentially the exposed thickness surface of the shell portion 12. The thickness surface is generally strip-shaped, and its width is exactly the thickness of the shell portion 12.

[0129] Therefore, the first portion 16 is open at the edge 30, meaning that one side of the first portion 16 is cleaved open from the edge 30 (this is intended to characterize the structure of the first portion 16 and does not mean that the edge 30 is manufactured with a mechanism capable of performing the "cleaving" action), thus forming a notch that communicates with the space outside the first portion 16. In an embodiment, the first portion 16 extends from the notch in a direction away from the edge 30 to the second portion 18.

[0130] Optionally, as mentioned in the above description, the second part 18 has a first position closer to the first part 16 and a second position relatively farther away from the first part 16, with the first position being narrower than the second position, that is, having a smaller width.

[0131] In this embodiment, the widths of the first and second positions can be determined as follows. Specifically, as described above, the edge portion 30 of the shell portion 12 is essentially a strip-shaped thickness surface. When adjacent shell portions 12 are connected, their edge portions 30 are joined together, so the orientations of the edge portions 30 configured to connect with each other are substantially consistent. In this embodiment, the mating of the two edge portions 30 forms a seam 24. Since the edge portions 30 are generally strip-shaped, the seam 24 is also strip-shaped, and its extension direction lies within the plane containing the thickness surface. Here, the direction parallel to the thickness surface of the seam 24 is used as the direction for determining the widths of the first and second positions.

[0132] In the embodiments, in the completed assembly structure of the electrical components, the housing 12 and the connecting member 38 may be subjected to forces that cause them to separate. These forces are often along the extension direction perpendicular to the seam 24 or perpendicular to the thickness surface, meaning they tend to cause the connecting member 38 to dislodge from the receiving portion 14 along the aforementioned notch. However, the first portion 16 and the second portion 18, especially the second portion 18, as described above, effectively prevent this tendency. Because the first position is narrower than the second position, when the connecting member 38 is subjected to this tensile force, the position of the connecting member 38 corresponding to the second position, due to its greater width, cannot pass through the narrower first position.

[0133] Based on the shape of the second part 18 described above, the second part 18 can have more specific and different shapes. Specifically, according to the manufacturing method provided in the embodiments of this disclosure, the material preparation and mold closing step may further include: constructing a shell part 12 with a receiving portion 14, such that the width of the second part 18 gradually increases from the side where the first part 16 is located to the side away from the first part 16. Thus, in the embodiments, the second part 18 gradually increases in width along the direction away from the first part 16, presenting a "conical" structure.

[0134] In an embodiment, the material preparation and molding step may further include: configuring the shell portion 12, on which the receiving portion 14 is formed, to have a plurality of second portions 18, which are arranged at intervals, for example, along the extension direction of the first portion 16, that is, the extension direction of the seam 24 as described above. Thus, according to the manufacturing method provided by the embodiments of this disclosure, these second portions 18 provide a certain degree of anti-detachment protection for different positions of the seam 24.

[0135] According to the manufacturing method provided in the embodiments of this disclosure, in some other examples, the material preparation and molding step may further include: constructing a shell portion 12 having a receiving portion 14 such that the width of the second portion 18 has at least one abrupt change from the side where the first portion 16 is located to the side away from the first portion 16.

[0136] In this example, unlike the gradual extension of the width of the second part 18 mentioned above, the width of the second part 18 in this example has at least one abrupt change. The term "abrupt change" here should be understood to include the following meaning: along the direction away from the first part 16, at a certain position (hereinafter referred to as the abrupt change position), the width of the second part 18 changes significantly relative to before at that position, and this change makes the second part 18 appear stepped.

[0137] According to the manufacturing method provided in the embodiments of this disclosure, when the portion of the connecting member 38 in the second part 18 attempts to detach from the notch in the first part 16, the portion of the connecting member 38 in the second part 18 with a wider portion after the abrupt change position will directly get stuck at the stepped position of the second part 18, thereby preventing the connecting member 38 from moving outward.

[0138] According to the manufacturing method provided in the embodiments of this disclosure, the material preparation and mold closing step may further include: constructing a shell portion 12 having a receiving portion 14, such that the receiving portion 14 has a plurality of first portions 16 spaced apart along the edge portion 30, and such that the receiving portion 14 has a plurality of second portions 18 (as mentioned in the above description), and such that each second portion 18 is connected to a corresponding first portion 16.

[0139] Referring to Figures 3 and 4, taking a housing 10 having two housing portions 12 as an example, Figures 3 and 4 show a first portion 16 arranged in a circumferential manner, and a plurality of second portions 18 communicating with the first portion 16. For a housing portion 12, for example, two second portions 18 can be provided on two sides of the housing portion 12 that do not pass through the conductor 40.

[0140] Referring to Figure 5, which shows another example, the second portion 18 is not shown, but the first portion 16 is visible being filled by the connecting member 38. In the example given in Figure 5, the edge portion 30 of the adjacent shell portion 12, i.e., the thickness surface, has a filling portion 22 (obviously, the filling portion 22 is recessed) that can accommodate the cured fluid plastic, i.e., the connecting member 38. The first portion 16 can communicate with the external environment through the filling portion 22 on the thickness surface, allowing the fluid plastic to be injected into the filling portion 22. In this example, multiple first portions 16 can be provided at intervals along the seam 24, for example, one first portion 16 can be provided on each side that does not pass through the conductor 40, allowing the fluid plastic to be injected into the filling portion 22.

[0141] According to the manufacturing method provided in the embodiments of this disclosure, the material preparation and mold closing step may further include: constructing a shell portion 12 having a receiving portion 14, such that the inner side of the shell portion 12 having the receiving portion 14 has a protrusion 20 corresponding to the receiving portion 14 in position.

[0142] According to the manufacturing method provided in this disclosure, the protrusion 20 formed on the inner side of the shell portion 12 has a reinforcing effect. Specifically, as shown in FIG6, this reinforcing effect is reflected in the position of the protrusion 20 corresponding to the receiving portion 14. In this way, the thinner part of the shell portion 12 due to the structure of the receiving portion 14 is reinforced by the inner protrusion 20, ensuring that the shell portion 12 does not lose strength due to the presence of the receiving portion 14. In the embodiments, since the receiving portion 14 can be formed on only one shell portion 12 in adjacent shell portions 12, the protrusion 20 can be formed on the inner side of the corresponding receiving portion 14 position on only one shell portion 12. Furthermore, in some examples, adjacent shell portions 12 all have receiving portions 14, and the protrusion 20 can be provided on each of them.

[0143] In this embodiment, the protrusion 20 is configured to limit the displacement and deviation of the electrical components in the length direction of the electrical components during the integral injection molding process. At the same time, considering the usage characteristics of the electrical components, it can also improve the strength of the housing to a certain extent.

[0144] Furthermore, in this embodiment, the aforementioned protrusion 20 is not provided around the hole in the housing 10 through which the conductor 40 passes.

[0145] Furthermore, as an additional example based on the example where protrusions 20 are provided on the inner sides of adjacent shell portions 12, the protrusions 20 located in adjacent shell portions 12 can engage with each other when adjacent shell portions 12 are joined. As shown in FIG6, a recessed structure is further formed on the protrusion 20. In another shell portion 12 (not shown) that engages with this shell portion 12, the corresponding protrusion 20 can have a boss structure. The boss structure can be slightly larger in size than the recessed structure so as to be embedded in the recessed structure, so that the two protrusions 20 form an engaging state. In this way, the connection strength between adjacent shell portions 12 is increased.

[0146] Furthermore, as an alternative example, the protrusion 20 can also serve as a sealing structure for sealing the fluid plastic during the second injection molding process. Specifically, in adjacent shell portions 12, the protrusion 20 of one can extend through the gap formed by the thickness surface of the adjacent shell portion 12 and abut against the inner side of the other, so that the joint 24 formed by the gap between the protrusion 20 and the inner side of the other and the gap between the aforementioned thickness surfaces together form a labyrinth structure, thereby preventing the fluid plastic from flowing into the assembled shell 10.

[0147] According to the manufacturing method provided in the embodiments of this disclosure, the material preparation and mold closing steps may further include:

[0148] Multiple receiving portions 14 are formed on the outer side of each shell portion 12. The shell portion 12 with the receiving portions 14 is constructed such that the shell portion 12 with the receiving portions 14 has a protrusion 20 corresponding to each receiving portion 14, and adjacent protrusions 20 are connected. As a result, the adjacent protrusions 20 are connected, giving these protrusions 20 better overall integrity, and thus, it is more beneficial to increase the strength of the shell 10.

[0149] According to the manufacturing method provided in the embodiments of this disclosure, the material preparation and mold closing steps may further include:

[0150] A recessed filling portion 22 is formed on the edge portion 30 of the shell portion 12, which is configured to connect adjacent shell portions 12. In the embodiment, adjacent shell portions 12 are constructed such that the filling portions 22 located on adjacent shell portions 12 respectively engage with each other to provide space for accommodating fluid plastic.

[0151] In an embodiment, as described above, a filling portion 22 communicates with a receiving portion 14 on a shell portion 12 having a receiving portion 14, and fluid plastic is configured to be injected from the receiving portion 14 into the filling portion 22.

[0152] According to the manufacturing method provided in the embodiments of this disclosure, the material preparation and mold closing steps may further include:

[0153] A recessed filling portion 22 is formed on the edge portion 30 of the shell portion 12, which is configured to connect adjacent shell portions 12. The filling portion 22 is also configured to open from the outer side of the shell portion 12. In the embodiment, adjacent shell portions 12 are constructed such that the filling portions 22 located on adjacent shell portions 12 respectively engage with each other to provide space for accommodating fluid plastic.

[0154] Unlike the example above, in this example, the filling part 22 may no longer communicate with the external environment via the receiving part 14, but may communicate with the external environment directly through an open structure on the outer side of the shell part 12, for example, by injecting fluid plastic into the filling part 22 through an injection hole located on the outer side that communicates directly with the filling part 22.

[0155] According to the manufacturing method provided in the embodiments of this disclosure, the material preparation and mold closing steps may further include:

[0156] Adjacent shell portions 12 are constructed such that the joint 24 formed by the adjacent shell portions 12 has a deflected extension section 26 located on the side where the internal space of the shell 10 is located. In an embodiment, the deflected extension section 26 extends from the filling portion 22 to the internal space of the shell 10 and changes its extension direction at least once.

[0157] In this embodiment, during the second injection molding, the fluid plastic may flow into the housing 10 under high temperature and high pressure. Here, the deflection extension section 26 makes the joint 24 essentially form a labyrinth seal structure that changes the direction of extension, thereby preventing the fluid plastic from flowing into the interior of the housing 10.

[0158] In an embodiment, taking FIG5 as an example, FIG5 shows an example of a housing 10. In this example, the deflection extension 26 can be defined by the stepped portion 28 inside the housing portion 12 and the inner side of another housing portion 12 adjacent to the housing portion 12. Here, the extension mode of the stepped portion 28 can be the same as the extension mode of the protrusion 20 as described above, so that the deflection extension 26 can be perpendicular to the portion of the joint 24 between the thickness surfaces.

[0159] According to the manufacturing method provided in the embodiments of this disclosure, the material preparation and mold closing steps may further include:

[0160] A protruding positioning portion 32 is formed on the inner side of the shell portion 12, and the portion of the positioning portion 32 extending beyond the shell portion 12 is configured to connect to adjacent shell portions 12. In an embodiment, a recess 34 corresponding to the positioning portion 32 is formed on the inner side of the shell portion 12 adjacent to the shell portion 12 where the positioning portion 32 is located, wherein the recess 34 is configured to allow the positioning portion 32 to be inserted when multiple shell portions 12 are assembled. In an embodiment, this insertion fit further increases the connection strength between adjacent shell portions 12.

[0161] Referring to Figures 6 and 7, in this embodiment, the positioning portion 32 can be, for example, a column structure, such as being formed as a cylinder, and the recess 34 can be, for example, a recessed structure provided on the end face of the columnar portion. In this embodiment, as an example, the end face of the columnar portion can be flush with the end face of the stepped portion 28 as described above, that is, higher than the thickness surface of the shell portion 12 where the columnar portion is located.

[0162] According to the manufacturing method provided in the embodiments of this disclosure, the material preparation and mold closing steps may further include:

[0163] A protruding structure 46 (here, the protruding structure 46 is the aforementioned columnar portion, referring to Figures 5 and 7, which is equivalent to protruding from the inner side of the shell portion 12) is formed on the inner side of the shell portion 12, and the shell portion 12 is constructed such that a reinforcing structure 36 connecting the protruding structure 46 and the inner side of the shell portion 12 is formed on the shell portion 12. As shown in Figure 7, the reinforcing structure 36 can be, for example, a reinforcing rib connecting the protruding structure 46 and the inner side of the shell portion 12, thereby improving the connection strength between the protruding structure 46 and the shell portion 12.

[0164] According to the manufacturing method provided in the embodiments of this disclosure, the assembly and molding step may further include: constructing a conductor 40 such that the conductor 40 has a through hole 42 connecting both sides of the conductor 40, and injecting fluid plastic into the through hole 42 to connect the cured fluid plastic located on both sides of the conductor 40 after curing. In the embodiment, both sides of the conductor 40 face the two shell portions 12 respectively.

[0165] In an embodiment, conductor 40, also known as the fuse as described above, may have integral wiring structures at both ends and a fuse structure in the middle of the wiring structures. In an embodiment, the wiring structures may be, for example, plate-shaped. In an embodiment, conductor 40 passes entirely through housing 10, and two wiring structures may be sandwiched between two housing portions 12, with both sides of each wiring structure, referred to above as "both sides of conductor 40," being the sides of the wiring structure as described herein.

[0166] In an embodiment, the housing 10, which is the housing 10 formed by assembling the housing portions 12, may have holes on two opposing sides (essentially the two bottoms for a cylindrical housing 10) for the conductors 40 to pass through. In an embodiment, two wiring structures are respectively inserted into two through holes 42.

[0167] In one embodiment, the fluid plastic also fills the space between the inside of the through-hole 42 and the outside of the wiring structure passing through the through-hole 42 to connect the wiring structure and the housing 10. In another embodiment, the through-hole 42 on the conductor 40, specifically the through-hole 42 on the wiring structure, allows the fluid plastic to fill it, so that after curing, the plastic in the through-hole 42 can connect the plastics on both sides of the wiring structure.

[0168] In this embodiment, without the through hole 42, the plastics on both sides of the wiring structure are not connected. Therefore, after the fluid plastic solidifies, the shrinkage of the plastics on both sides of the wiring structure is uneven. The edges in the width direction of the wiring structure are relatively uniform, while the middle part in the width direction of the wiring structure shrinks unevenly. After the through hole 42 is provided to connect the plastics on both sides, the plastics in the through hole 42 act as a "bridge" to promote the transmission of force between the plastics on both sides, causing the plastics on both sides to shrink to a relatively uniform state, thereby reducing the internal stress of the plastics after shrinkage.

[0169] Furthermore, in the embodiment, the plastic inside the through hole 42 acts as a "bridge" to connect the plastics on both sides of the wiring structure, which is equivalent to further connecting the two shell parts 12, thereby improving the strength and structural stability of the shell 10.

[0170] In this embodiment, as a practical example, the number of through holes 42 provided here may be two, but it is not limited to this. The number of through holes 42 may be one, three, four or even more.

[0171] In other examples, considering the pressure-bearing capacity requirements of the inner cavity of the housing 10, anti-plastic shrinkage grooves can be pre-reserved on the part of the wiring structure connecting the two housing parts 12. Correspondingly, closed grooves can be formed at the corresponding positions of the wiring structure. During the second injection molding, the fluid plastic flow will fill the mating anti-plastic shrinkage grooves and closed grooves, thereby storing a certain amount of fluid plastic. After the housing 10 cools, although there may be some shrinkage gaps between the housing 10 and the wiring structure, the stored plastic in the mating anti-plastic shrinkage grooves and closed grooves can compensate for this shrinkage, thus ensuring the pressure seal of the housing 10 and further improving the sealing strength of the housing 10. This prevents pressure loss and insufficient strength of the housing 10, making it applicable to a wider range of scenarios.

[0172] Considering the operating environment in the electrical field, to improve the stability of pressure sealing and structural strength within the housing 10 under different operating conditions (when air pressure changes), and to enhance the high pressure resistance (1-2500MPa, or even higher) of the sealed cavity formed internally after the integral injection molding of the upper and lower housing parts 12, the manufacturing method provided according to the embodiments of this disclosure, compared with manual glue bonding and separate assembly processes, significantly improves the electrical sealing performance, high-pressure resistance stability, insulation reliability, and shock and pressure resistance of the complete housing 10 formed by integral molding by injection molding, taking into account different wall thicknesses of the housing 10. For example, when the wall thickness of the housing 10 is >3mm, with a reference fuse current of 20kA, the inner cavity of the housing 10 should be able to withstand a pressure of >1982.5MPa, and with a fuse current of 1kA, the inner cavity of the housing 10 should be able to withstand a pressure of >49MPa.

[0173] According to the manufacturing method provided in the embodiments of this disclosure, the manufacturing method further includes testing and processing steps performed on the combined structure. The testing and processing steps may include: testing the resistance of the conductor 40 of the combined structure; filling the housing 10 of the combined structure with insulating particles and sealing the housing 10 to form an electrical component; and testing the electrical performance and insulation performance of the electrical component.

[0174] In this embodiment, the testing and processing steps essentially follow the existing manufacturing process for electrical components such as fuses. After testing the resistance of the fuse body, an insulating shell 10, such as quartz sand, is filled into the housing 10 of the composite structure. The quartz sand can be filled through a sand-vibrating hole 44 formed on the housing 10 (i.e., on one of the shell parts 12). After filling, the hole is sealed to form the finished fuse. Finally, the electrical and insulation performance of the fuse is tested.

[0175] In this embodiment, the testing and processing steps are relatively independent of the material preparation and molding steps, transfer steps, and assembly and molding steps mentioned above. That is, the testing and processing steps do not directly affect these three steps. However, it is precisely because this embodiment provides the above-mentioned material preparation and molding steps, transfer steps, and assembly and molding steps that this embodiment allows for direct testing and processing of the assembled structure after obtaining it, without requiring post-processing such as glue application or clamp installation on the housing 10. Therefore, this embodiment, by directly performing testing and processing on the assembled structure after obtaining it, represents a significant simplification of the manufacturing process for electrical components.

[0176] According to a second aspect of the present disclosure, an electrical component is provided. The electrical component may include a housing 10, which may include a plurality of shell portions 12 and connecting members 38. In an embodiment, the shell portions 12 are configured to be injection molded, and the connecting members 38 are located between adjacent shell portions 12 to be configured to connect the assembled plurality of shell portions 12, thereby forming the housing 10. In an embodiment, a portion of the connecting member 38 is located on the outer side of at least one of the adjacent shell portions 12. Thus, by injection molding the shell portions 12 and then connecting the shell portions 12 using the connecting members 38, with a portion of the connecting member 38 located on the outer side of at least one of the adjacent shell portions 12, the integrity and strength of the assembled shell portions 12 are effectively improved.

[0177] As an example, in the embodiments, the electrical component may be manufactured, for example, by the manufacturing method provided according to the first aspect of the present disclosure. The terminology appearing in the second aspect of the present disclosure uses the same terminology as used in the first aspect of the present disclosure, referring to the same content and having the same beneficial effects, and will not be repeated here. Furthermore, as an example, as described above, the electrical component may be, for example, a fuse.

[0178] Optionally, at least one of the aforementioned shell portions 12 has a recessed receiving portion 14 formed on its outer side, wherein the receiving portion 14 is configured to receive a portion of the connecting member 38.

[0179] Optionally, each shell portion 12 has a receiving portion 14 formed on its outer side, and adjacent shell portions 12 are configured such that the receiving portions 14 located on adjacent shell portions 12 can engage with each other to provide space for accommodating a portion of the connecting member 38.

[0180] Optionally, the receiving portion 14 has a first portion 16 that opens from the edge portion 30 of the shell portion 12 and is configured to connect with the adjacent shell portion 12. The receiving portion 14 has a second portion 18 that communicates with the first portion 16 on the side of the first portion 16 away from the edge portion 30. The second portion 18 has a first width at a first position and a second width at a second position. The first width is smaller than the second width. The first position is closer to the first portion 16 than the second position.

[0181] Optionally, the width of the second part 18 gradually increases from the side where the first part 16 is located to the side away from the first part 16.

[0182] Optionally, the width of the second part 18 has at least one abrupt change from the side where the first part 16 is located to the side away from the first part 16.

[0183] Optionally, the receiving portion 14 has a plurality of first portions 16 spaced apart along the edge portion 30, and the receiving portion 14 has a plurality of second portions 18, each second portion 18 being in communication with a corresponding first portion 16.

[0184] Optionally, the inner side of the shell portion 12 has a protrusion 20 that corresponds in position to the receiving portion 14, and the protrusion 20 protrudes from the inner side of the shell portion 12 in a direction away from the inner side of the shell portion 12.

[0185] Optionally, a plurality of receiving portions 14 are formed on the outer side of each shell portion 12, and a protrusion 20 corresponding to the receiving portions 14 formed on the inner side of the shell 10 is formed, and adjacent protrusions 20 are connected to each other.

[0186] Alternatively, adjacent shell portions 12 are configured such that the joint 24 formed by the adjacent shell portions 12 has a deflected extension 26 located on the side where the interior space of the shell 10 is located.

[0187] The variable extension section 26 extends from the filling part 22 to the internal space of the housing 10 and changes its extension direction at least once.

[0188] One of the adjacent shell portions 12 is formed with a stepped portion 28 protruding from the inner side of the shell portion 12. The stepped portion 28 is connected to the edge portion 30 of one of the adjacent shell portions 12 to connect with the other of the adjacent shell portions 12 to form a stepped surface. That is, the stepped portion 28 is connected to the edge portion 30 of one of the two adjacent shell portions 12 to connect with the other to form a stepped surface.

[0189] In this case, the inner side of the other of the adjacent shell portions 12 is joined with the stepped surface to form a directional extension 26; wherein the stepped portion 28 is formed on the protrusion 20.

[0190] Optionally, the shell portion 12 is configured to form a recessed filling portion 22 on the edge portion 30 connecting adjacent shell portions 12; wherein, the adjacent shell portions 12 are configured such that the filling portions 22 located on the adjacent shell portions 12 respectively engage with each other to provide space for accommodating the connecting member 38.

[0191] Optionally, adjacent shell portions 12 are configured such that the receiving portion 14 on the same shell portion 12 communicates with the filling portion 22.

[0192] Alternatively, as an alternative, adjacent shell portions 12 are configured such that the joint 24 formed by the adjacent shell portions 12 has a deflected extension 26 located on the side where the internal space of the shell 10 is located.

[0193] The variable extension section 26 extends from the filling part 22 to the internal space of the housing 10 and changes its extension direction at least once.

[0194] Alternatively, as an alternative, one of the adjacent shell portions 12 is formed with a stepped portion 28 protruding from the inner side of the shell portion 12, and the stepped portion 28 is connected to the edge portion 30 of one of the adjacent shell portions 12 to connect with the other of the adjacent shell portions 12 to form a stepped surface.

[0195] In this configuration, the edge portion 30 of one of the adjacent shell portions 12 is configured to connect with the stepped surface to form a directional extension segment 26. That is, the edge portion 30 of one of the two adjacent shell portions 12 connects with the stepped surface to form a directional extension segment 26.

[0196] Optionally, a protruding positioning portion 32 is formed on the inner side of the shell portion 12, and the positioning portion 32 extends beyond the shell portion 12 and is configured to connect adjacent shell portions 12.

[0197] A recess 34 is formed on the inner side of the shell portion 12 adjacent to the positioning portion 32, which corresponds to the positioning portion 32 in position. The recess 34 is configured to allow the positioning portion 32 to be inserted when multiple shell portions 12 are assembled.

[0198] Optionally, one of the adjacent shell portions 12 is formed with a stepped portion 28 protruding from the inner side of the shell portion 12. The stepped portion 28 and the edge portion 30 of one of the adjacent shell portions 12 are configured to connect with the other of the adjacent shell portions 12 to form a stepped surface.

[0199] In this case, the edge portion 30 of the other of the adjacent shell portions 12 is configured to connect with the stepped surface to form a joint 24, that is, the edge portion 30 of the other of the two adjacent shell portions 12 connects with the stepped surface to form a joint 24, and the joint 24 has a deflection extension segment 26 that changes the direction of extension.

[0200] The recess 34 is formed in the stepped portion 28.

[0201] Optionally, a protruding structure 46 is formed on the inner side of the shell portion 12, the protruding structure 46 having a recess 34, and the shell portion 12 having a reinforcing structure 36 connecting the protruding structure 46 and the inner side of the shell portion 12.

[0202] Optionally, the electrical component also includes a conductor 40 that penetrates the housing 10;

[0203] The connecting member 38 is also located between the conductor 40 and the shell 12 to connect the shell 12 and the conductor 40.

[0204] The conductor 40 has a through hole 42 connecting both sides of the conductor 40, and a portion of the connecting member 38 passes through the through hole 42 to connect the portions of the connecting member 38 located on both sides of the conductor 40 respectively.

[0205] The conductor 40 has two sides facing the two shells 12 respectively.

[0206] The above are merely optional embodiments of this disclosure and do not limit the scope of protection of this disclosure. Any equivalent structural transformations made based on the innovative concept of this disclosure and the contents of this specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of this disclosure. Industrial applicability

[0207] The method for manufacturing electrical components disclosed herein can omit the tedious assembly process based on dispensing adhesive to the housing, simplifying the manufacturing process; furthermore, it helps to improve the sealing performance of the housing, saves a lot of time, and avoids the problem of adhesive overflow on the surface of the housing after dispensing.

Claims

1. A method for manufacturing an electrical component, characterized in that, The electrical component includes a housing and a conductor penetrating the housing, and the manufacturing method includes: The material preparation and mold closing steps are performed inside the mold, and the mold closing is used to injection mold multiple shell parts. The transfer step involves transferring the plurality of shells and the conductor to a processing position, assembling the plurality of shells, and inserting the conductor through the assembled plurality of shells. The assembly and molding step involves closing the mold, injecting fluid plastic between adjacent shell portions, injecting the fluid plastic between the conductor and the shell portion adjacent to the conductor, and solidifying the fluid plastic to form the shell and a combined structure of the shell and the conductor. During the assembly and mold closing step, the material preparation and mold closing step is simultaneously performed inside the mold for the next electrical component to form the plurality of housings of the next electrical component. Specifically, after the assembly and molding step, the transfer step and the assembly and molding step are sequentially performed for the next electrical component to form the combined structure of the next electrical component.

2. The manufacturing method according to claim 1, characterized in that, The material preparation and mold closing step further includes placing the conductor in the waiting position in the mold, and the transfer step further includes transferring the conductor from the waiting position to the processing position.

3. The manufacturing method according to claim 1, characterized in that, The material preparation and molding step further includes: forming the plurality of shell parts at different positions, wherein at least two of the plurality of shell parts are staggered in the extension direction of the shell.

4. The manufacturing method according to claim 1, characterized in that, The assembly and molding step also includes: The fluid plastic is also located on and solidified on the outer side of at least one of the adjacent shell portions.

5. The manufacturing method according to claim 4, characterized in that, The material preparation and mold assembly steps also include: A recessed receiving portion is formed on the outer side of at least one of the plurality of shell portions, wherein the receiving portion is configured to receive the fluid plastic.

6. The manufacturing method according to claim 5, characterized in that, The material preparation and mold assembly steps also include: The receiving portion is formed on the outer side of each of the shell portions, wherein adjacent shell portions are constructed such that the receiving portions located on adjacent shell portions engage with each other to provide space for receiving the fluid plastic.

7. The manufacturing method according to claim 5, characterized in that, The material preparation and mold assembly steps also include: The shell portion having the receiving portion is constructed such that the receiving portion has a first portion that opens from an edge portion of the shell portion configured to connect adjacent shell portions, and such that the receiving portion has a second portion located on the side of the first portion away from the edge portion that communicates with the first portion, the second portion having a first width at a first position and a second width at a second position, the first width being smaller than the second width, and the first position being closer to the first portion relative to the second position.

8. The manufacturing method according to claim 7, characterized in that, The material preparation and mold assembly steps also include: The shell portion having the receiving portion is constructed such that the width of the second portion gradually increases from the side where the first portion is located to the side away from the first portion.

9. The manufacturing method according to claim 7, characterized in that, The material preparation and mold assembly steps also include: The shell portion having the receiving portion is constructed such that the width of the second portion has at least one abrupt change from the side where the first portion is located to the side away from the first portion.

10. The manufacturing method according to claim 7, characterized in that, The material preparation and mold assembly steps also include: The shell portion having the receiving portion is constructed such that the receiving portion has a plurality of first portions spaced apart along the edge portion, and the receiving portion has a plurality of second portions, and each second portion is in communication with a corresponding first portion.

11. The manufacturing method according to claim 5, characterized in that, The material preparation and mold assembly steps also include: The shell portion having the receiving portion is constructed such that the inner side of the shell portion having the receiving portion has a protrusion that corresponds in position to the receiving portion.

12. The manufacturing method according to claim 11, characterized in that, The material preparation and mold assembly steps also include: A plurality of receiving portions are formed on the outer side of each of the shell portions, and the shell portions having the receiving portions are constructed such that the shell portions having the receiving portions have protrusions provided corresponding to each of the receiving portions, and adjacent protrusions are connected.

13. The manufacturing method according to claim 5, characterized in that, The material preparation and mold assembly steps also include: A recessed filling portion is formed on the edge portion of the shell portion that is configured to connect adjacent shell portions; The shell portions are constructed such that the filling portions located on the adjacent shell portions engage with each other to provide space for accommodating the fluid plastic; In this configuration, on the shell portion having the receiving portion, the filling portion communicates with the receiving portion, and the fluid plastic is configured to be injected into the filling portion from the receiving portion.

14. The manufacturing method according to claim 1, characterized in that, The material preparation and mold assembly steps also include: A recessed filling portion is formed on the edge portion of the shell portion that is configured to connect adjacent shell portions, and the filling portion is also configured to open from the outer side portion of the shell portion; The shell portions are constructed such that the filling portions located on the adjacent shell portions engage with each other to provide space for accommodating the fluid plastic.

15. The manufacturing method according to claim 13 or 14, characterized in that, The material preparation and mold assembly steps also include: The adjacent shell portions are constructed such that the joint formed by the adjacent shell portions has a directional extension section located on the side where the internal space of the shell is located; The variable-direction extension segment extends from the filling portion to the internal space of the housing and changes its extension direction at least once.

16. The manufacturing method according to any one of claims 1 to 14, characterized in that, The material preparation and mold assembly steps also include: A protruding positioning portion is formed on the inner side of the shell portion, and the portion of the positioning portion extending beyond the shell portion is configured to connect to an adjacent shell portion; A recess corresponding to the positioning part is formed on the inner side of another shell part adjacent to the shell part where the positioning part is located, wherein the recess is configured to allow the positioning part to be inserted when the plurality of shell parts are assembled.

17. The manufacturing method according to any one of claims 1 to 14, characterized in that, The material preparation and mold assembly steps also include: A protruding structure is formed on the inner side of the shell portion, and the shell portion is constructed such that the shell portion has a reinforcing structure connecting the protruding structure and the inner side of the shell portion.

18. The manufacturing method according to any one of claims 1 to 14, characterized in that, The assembly and molding step also includes: The conductor is constructed such that it has a through hole connecting both sides of the conductor, and the fluid plastic is also injected into the through hole to connect the cured fluid plastic located on both sides of the conductor after curing. The two sides of the conductor face the two shell portions respectively.

19. The manufacturing method according to any one of claims 1 to 14, characterized in that, The manufacturing method further includes testing and processing steps for the combined structure: Test the resistance of the conductor in the combined structure; Insulating particles are filled into the housing of the combined structure, and the housing is sealed to form the electrical component; The electrical components are subjected to electrical performance and insulation performance tests.

20. An electrical component, characterized in that, The electrical component includes a housing, the housing comprising: Multiple shells, the shells being configured to be injection molded; A connecting member located between adjacent shell portions, configured to connect the assembled shell portions to form the housing; The connecting member is located on the outer side of at least one of the adjacent shell portions.

21. The electrical component according to claim 20, characterized in that, At least one of the plurality of shell portions has a recessed receiving portion formed on its outer side, wherein the receiving portion is configured to receive the portion of the connecting member.

22. The electrical component according to claim 21, characterized in that, Each of the shell portions has a receiving portion formed on its outer side, and adjacent shell portions are configured such that the receiving portions located on adjacent shell portions can engage with each other to provide space for accommodating the portion of the connecting member.

23. The electrical component according to claim 21, characterized in that, The receiving portion has a first portion that opens from the edge portion of the shell portion configured to connect adjacent shell portions, and the receiving portion has a second portion that communicates with the first portion on the side of the first portion away from the edge portion, the second portion having a first width at a first position and a second width at a second position, the first width being smaller than the second width, and the first position being closer to the first portion relative to the second position.

24. The electrical component according to claim 23, characterized in that, The width of the second part gradually increases from the side where the first part is located to the side away from the first part.

25. The electrical component according to claim 23, characterized in that, The width of the second portion has at least one abrupt change from the side where the first portion is located to the side away from the first portion.

26. The electrical component according to claim 23, characterized in that, The receiving portion has a plurality of first portions spaced apart along the edge portion, and the receiving portion has a plurality of second portions, each of the second portions being in communication with a corresponding first portion.

27. The electrical component according to claim 21, characterized in that, The inner side of the shell portion has a protrusion that corresponds in position to the receiving portion, and the protrusion protrudes from the inner side of the shell portion in a direction away from the inner side of the shell portion.

28. The electrical component according to claim 27, characterized in that, Each of the shell portions has a plurality of receiving portions formed on its outer side, and the inner side of the shell portion has protrusions that correspond one-to-one with the receiving portions formed on the shell portion, with adjacent protrusions connected to each other.

29. The electrical component according to claim 27, characterized in that, The adjacent shell portions are configured such that the joint formed by the adjacent shell portions has a directional extension on the side where the internal space of the shell is located; The shell portion is configured such that a recessed filling portion is formed on the edge portion connecting adjacent shell portions, and the deflecting extension segment extends from the filling portion to the internal space of the shell and changes its extension direction at least once. One of the adjacent shell portions is formed with a stepped portion protruding from the inner side of the shell portion, and the stepped portion is connected to the edge portion of the adjacent shell portion that is configured to connect with the other adjacent shell portion to form a stepped surface. Wherein, the inner side of the other of the adjacent shell portions engages with the stepped surface to form the directional extension segment; The stepped portion is formed on the protrusion.

30. The electrical component according to claim 20, characterized in that, The shell portion is configured such that recessed filling portions are formed on the edge portions connecting adjacent shell portions; The adjacent shell portions are configured such that the filling portions located on the adjacent shell portions engage with each other to provide space for accommodating the connecting member.

31. The electrical component according to claim 30, characterized in that, At least one of the plurality of shell portions has a recessed receiving portion formed on its outer side, wherein the receiving portion is configured to receive the portion of the connecting member; The adjacent shell portions are configured such that the receiving portion on the same shell portion communicates with the filling portion.

32. The electrical component according to claim 30, characterized in that, The adjacent shell portions are configured such that the joint formed by the adjacent shell portions has a directional extension on the side where the internal space of the shell is located; The variable-direction extension segment extends from the filling portion to the internal space of the housing and changes its extension direction at least once.

33. The electrical component according to claim 32, characterized in that, One of the adjacent shell portions is formed with a stepped portion protruding from the inner side of the shell portion, and the stepped portion is configured to connect with the edge portion of the adjacent shell portion to connect with the other adjacent shell portion to form a stepped surface. In this configuration, the edge portion of one of the adjacent shell portions is configured to engage with the stepped surface to form the directional extension segment.

34. The electrical component according to claim 20, characterized in that, The inner side of the shell portion has a protruding positioning portion, and the portion of the positioning portion extending beyond the shell portion is configured to connect to the adjacent shell portions; An inner portion of the shell portion adjacent to the housing portion containing the positioning portion is formed with a recess corresponding to the positioning portion in position, wherein the recess is configured to allow the positioning portion to be inserted when the plurality of shell portions are assembled.

35. The electrical component according to claim 34, characterized in that, One of the adjacent shell portions is formed with a stepped portion protruding from the inner side of the shell portion, and the stepped portion is configured to connect with the edge portion of the adjacent shell portion to connect with the other adjacent shell portion to form a stepped surface. In this configuration, the edge portion of one of the adjacent shell portions is configured to engage with the stepped surface to form a seam, the seam having a deflecting extension segment that changes the direction of extension. The recess is formed in the stepped portion.

36. The electrical component according to claim 35, characterized in that, The inner side of the shell portion has a protruding structure, the protruding structure has the recess, and the shell portion has a reinforcing structure connecting the protruding structure and the inner side of the shell portion.

37. The electrical component according to any one of claims 20 to 36, characterized in that, The electrical component also includes a conductor that penetrates the housing; The connecting member is also located between the conductor and the shell to connect the shell and the conductor; The conductor has a through hole connecting both sides of the conductor, and a portion of the connecting member passes through the through hole to connect portions of the connecting member located on both sides of the conductor. The two sides of the conductor face the two shell portions respectively.

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