Injection molded case and forming method thereof, connector and preparation method thereof

Abstract

The embodiments of the present application provide an injection molded shell and a method for forming the same, a connector and a method for preparing the same, wherein the method for forming the injection molded shell comprises: placing a placeholder between a first terminal assembly and a second terminal assembly, so that a first space is formed between the outer surface of at least part of the placeholder and the first terminal assembly, and a second space is formed between the outer surface of at least part of the placeholder and the second terminal assembly; wrapping the mold around the outside of the first terminal assembly and the second terminal assembly; injecting material into the first space and the second space through the injection hole of the mold, and after the material is solidified and formed, opening the mold and removing the placeholder, so that the solidified material has a cavity; and the solidified material is an injection molded shell. The injection molded shell and a method for forming the same, the connector and a method for preparing the same provided by the present application have the advantages of utilizing the cavity to reduce crosstalk, simple process, and good anti-crosstalk effect.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of electronic equipment, and in particular to an injection-molded case and a method for forming the same, a connector and a method for preparing the same. Background Art

[0002] With the continuous development of data transmission technology, the demand for high-speed, high-density high-speed connectors is increasing. As the transmission rate of high-speed connectors continues to increase, suppressing crosstalk has become a key point in connector product design.

[0003] In the related art, a high-speed connector includes an upper terminal, a lower terminal, and a plastic housing, wherein the upper terminal and the lower terminal are spaced apart, and at least a portion of the plastic housing is disposed between the upper terminal and the lower terminal.

[0004] However, the high-speed connectors of the related art require high process precision and have low production efficiency. Summary of the Invention

[0005] The embodiments of the present application provide an injection molded shell and a method for forming the same, a connector and a method for preparing the same, to solve the problems of high-speed connectors in related technologies having high process precision requirements and low production efficiency.

[0006] To achieve the above objectives, this application provides the following technical solutions:

[0007] One aspect of an embodiment of the present application provides a method for forming an injection molded housing for a connector, the connector comprising a first terminal assembly and a second terminal assembly, the first terminal assembly and the second terminal assembly being spaced apart along a first direction, the forming method comprising:

[0008] A placeholder is placed between the first terminal assembly and the second terminal assembly, so that a first space is formed between at least a portion of the outer surface of the placeholder and the first terminal assembly, and a second space is formed between at least a portion of the outer surface of the placeholder and the second terminal assembly; the mold is wrapped around the outside of the first terminal assembly and the second terminal assembly; material is injected into the first space and the second space through the injection hole of the mold, and after the material is solidified, the mold is opened and the placeholder is removed, so that the solidified material has a cavity, and the solidified material is the injection molded shell.

[0009] The method for forming the injection molded shell of the connector provided in the present application places a placeholder between the first terminal assembly and the second terminal assembly, and forms an injection molded shell with a cavity through the placeholder, and uses the cavity to reduce crosstalk. It has the advantages of simple process and good anti-crosstalk effect.

[0010] In one possible implementation, the placeholder, the first terminal assembly and the second terminal assembly are all provided with positioning holes, and the mold is provided with a positioning block; when the mold is wrapped around the outside of the first terminal assembly and the second terminal assembly, the positioning block is embedded in the positioning hole.

[0011] The above solution facilitates the positioning between the mold and the placeholder, thereby improving the processing accuracy of the process.

[0012] In one possible implementation manner, the positioning hole passes through the placeholder.

[0013] Through the above scheme, the first space and the second space can be connected through the positioning hole, so that the material solidified in the first space and the material solidified in the second space can form a whole, and the material solidified in the first space and the material solidified in the second space can be supported by the material solidified in the positioning hole, so as to improve the structural strength of the injection molded shell.

[0014] In one possible implementation, the mold is formed with a main cavity for accommodating the first terminal assembly and the second terminal assembly, at least one end of the main cavity in the second direction exceeds the first terminal assembly and the second terminal assembly, and the main cavity has a first inner side wall and a second inner side wall relative to each other in the second direction, and the second direction is perpendicular to the first direction; when the mold is wrapped around the outside of the first terminal assembly and the second terminal assembly, there is a third space between the outer surface of at least part of the placeholder and the first inner side wall; and / or, there is a fourth space between the outer surface of at least part of the placeholder and the second inner side wall; the first space and the second space are connected through the third space and the fourth space.

[0015] Through the above scheme, the materials solidified in the first space, the third space, the second space, and the fourth space can be formed into a single unit using an injection molding process, thereby improving the strength of the injection-molded shell. In addition, compared to related technologies that use at least two steps to form the injection-molded shell, this method uses injection molding to form the injection-molded shell in a single step, which has the advantages of reducing processing steps and lowering process requirements.

[0016] In one possible implementation, the first terminal assembly has a first through hole; the mold has a first convex space, the first convex space is located on the side of the first terminal assembly away from the second terminal assembly, and the first convex space is connected to the first space through the first through hole.

[0017] Through the above solution, a portion of the injection-molded shell protruding from the first terminal assembly is formed.

[0018] In one possible implementation, the second terminal assembly has a second through hole; the mold has a second convex space, the second convex space is located on the side of the second terminal assembly away from the first terminal assembly, and the second convex space is connected to the second space through the second through hole.

[0019] Through the above solution, a portion of the injection-molded shell protruding from the second terminal assembly is formed.

[0020] Another aspect of an embodiment of the present application provides a method for preparing a connector, comprising: forming a first terminal assembly; forming a second terminal assembly; and executing the forming method as described above.

[0021] The preparation method of the connector provided in the present application places a placeholder between the first terminal assembly and the second terminal assembly, and forms an injection-molded shell with a cavity through the placeholder, and uses the cavity to reduce crosstalk. It has the advantages of simple process and good anti-crosstalk effect.

[0022] Another aspect of the embodiments of the present application provides an injection-molded shell, which is an integral piece formed by the forming method described above.

[0023] The injection-molded shell provided in the present application forms a cavity of the injection-molded shell by a placeholder, and the injection-molded shell is integrally formed, so that the connector has the advantages of high structural strength and good anti-crosstalk capability.

[0024] Another aspect of the embodiments of the present application provides a connector, including a first terminal assembly, a second terminal assembly, and the injection-molded shell as described above.

[0025] The connector provided in the present application forms a cavity of the injection-molded shell by a placeholder, and the injection-molded shell is integrally formed, so that the connector has the advantages of high structural strength and good anti-crosstalk capability.

[0026] In one possible implementation, the injection-molded housing includes a main body portion, the main body portion is located between the first terminal assembly and the second terminal assembly and has a cavity;

[0027] The first terminal assembly has a first through hole, and the second terminal assembly has a second through hole; the injection molded shell further includes a first convex portion and a second convex portion, the first convex portion is connected to the main body and passes through the first through hole to exit the first terminal assembly, and the second convex portion is connected to the main body and passes through the second through hole to exit the second terminal assembly;

[0028] And / or, the injection-molded shell further includes a tip portion, which is connected to the main body and is located on one side of the first terminal assembly and / or the second terminal assembly in the second direction.

[0029] In addition to the technical problems solved by the embodiments of the present application, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0031] Figure 1A-Figure 1D A diagram of a process for preparing a connector provided in an embodiment of the present application;

[0032] Figure 2 A flowchart of a method for preparing a connector provided in an embodiment of the present application.

[0033] Description of reference numerals:

[0034] 100-first terminal assembly; 110-first through hole;

[0035] 200-second terminal assembly; 210-second through hole;

[0036] 300-placeholder;

[0037] 410-first space; 420-second space; 430-third space; 440-fourth space;

[0038] 500 - mold; 510 - main chamber; 511 - first inner side wall; 512 - second inner side wall; 520 - first convex space; 530 - second convex space; 540 - positioning block;

[0039] 600 - injection molded shell; 610 - main body; 620 - first convex portion; 630 - second convex portion; 640 - tip; 650 - cavity;

[0040] 700-positioning hole;

[0041] 810-first electric wire; 820-second electric wire.

[0042] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0043] As described in the background, high-speed connectors in related art suffer from high process precision requirements and low production efficiency. The inventors discovered that this problem arises because, during the production of the injection-molded housings of related-art high-speed connectors, the cavity is formed by assembling an upper shell and a lower shell. Furthermore, after the cavity is formed, additional overlapping components are required to seal the cavity.

[0044] In response to the above technical problems, an embodiment of the present application provides a method for forming an injection-molded shell, by placing a placeholder between the first terminal assembly and the second terminal assembly, and forming an injection-molded shell with a cavity through the placeholder, and utilizing the cavity to reduce crosstalk, which has the advantages of simple process and good anti-crosstalk effect.

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments.

[0046] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0047] Figure 1A-Figure 1D A diagram of a connector manufacturing process provided in an embodiment of the present application, Figure 2 This is a flow chart of a method for preparing a connector provided in an embodiment of the present application. Figure 1A-Figure 1D as well as Figure 2 To describe the preparation process of the connector provided in the embodiment of the present application.

[0048] refer to Figure 1A and Figure 2 , S101, forming a first terminal assembly.

[0049] Specifically, the first terminal assembly 100 may include a first terminal and a first plastic, which may be formed by injection molding. The first terminal assembly 100 may extend along the second direction Y and may be provided with a first through hole 110 extending therethrough.

[0050] Continue to refer Figure 1A , S102, forming a second terminal assembly.

[0051] Specifically, the second terminal assembly 200 may include a second terminal and a second plastic, which may be formed by injection molding. The second terminal assembly 200 may extend along the second direction Y and may be provided with a second through hole 210 extending therethrough.

[0052] Continue to refer Figure 1A S103: Connect the first wire to one end of the first terminal assembly in the second direction, and connect the second wire to one end of the second terminal assembly in the second direction.

[0053] Specifically, the end of the first wire 810 can be connected to one end of the first terminal assembly 100 in the second direction Y. Further, the end of the first wire 810 and the end of the first terminal assembly 100 in the second direction Y can be connected as shown in FIG. Figure 1A As shown in FIG. 1 , the ends of the first wire 810 and the first terminal assembly 100 are overlapped (or stacked) to increase the contact area between the end of the first wire 810 and the first terminal assembly 100 to improve the connection strength. Similarly, the end of the second wire 820 can be connected to one end of the second terminal assembly 200 in the second direction Y. Further, the end of the second wire 820 and the end of the second terminal assembly 200 in the second direction Y can be connected as shown in FIG. Figure 1A The overlapping (or stacked) arrangement shown increases the contact area between the end of the second wire 820 and the second terminal assembly 200, thereby improving the connection strength. It should be noted that the connection between the first terminal assembly 100 and the end of the first wire 810 and the connection between the second terminal assembly 200 and the end of the second wire 820 are located on the same side.

[0054] Continue to refer Figure 1A S104: space the first terminal assembly and the second terminal assembly along a first direction. Specifically, a certain distance is provided between the first terminal assembly 100 and the second terminal assembly 200 in the first direction X. The first direction X is perpendicular to the second direction Y.

[0055] S105, forming an injection molded shell.

[0056] The method of forming the injection molded shell 600 may include:

[0057] refer to Figure 1B , S1051, place a placeholder 300 between the first terminal assembly 100 and the second terminal assembly 200, and form a first space 410 between the outer surface of at least part of the placeholder 300 and the first terminal assembly 100, and form a second space 420 between the outer surface of at least part of the placeholder 300 and the second terminal assembly 200.

[0058] Specifically, the third direction may be perpendicular to the plane formed by the first direction X and the second direction Y. The placeholder 300 may be inserted between the first terminal assembly 100 and the second terminal assembly 200 along the third direction. In addition, the placeholder 300 may have a top surface and a bottom surface in the first direction X. A first space 410 may be formed between the top surface of the placeholder 300 and the first terminal assembly 100. The first space 410 may allow the passage of materials described below. In addition, a second space 420 may be formed between the bottom surface of the placeholder 300 and the second terminal assembly 200. The second space 420 may allow the passage of materials described below.

[0059] refer to Figure 1C , S1052, wrap the mold 500 around the outside of the first terminal assembly 100 and the second terminal assembly 200.

[0060] The mold 500 may include a first portion and a second portion. For example, the first portion may be wrapped around one side of the first terminal assembly 100 and the second terminal assembly 200 in the third direction, and the second portion may be wrapped around the other side of the first terminal assembly 100 and the second terminal assembly 200 in the third direction. The first and second portions may be connected together by fasteners such as bolts to form the main cavity 510. For another example, the first portion may be wrapped around one side of the first terminal assembly 100 and the second terminal assembly 200 in the second direction Y, and the second portion may be wrapped around the other side of the first terminal assembly 100 and the second terminal assembly 200 in the second direction Y. The first and second portions may be connected together by fasteners such as bolts to form the main cavity 510.

[0061] Furthermore, the main chamber 510 may have a first inner sidewall 511 and a second inner sidewall 512 opposing each other in the second direction Y. A third space 430 is defined between at least a portion of the outer surface of the placeholder 300 and the first inner sidewall 511, and a fourth space 440 is defined between at least a portion of the outer surface of the placeholder 300 and the second inner sidewall 512. The first space 410 and the second space 420 are connected via the third space 430 and the fourth space 440. This allows the materials solidified in the first space 410, the third space 430, the second space 420, and the fourth space 440 to be formed into a single unit using an injection molding process, thereby enhancing the strength of the injection-molded housing 600.

[0062] In addition, the material solidified in the first space 410, the material solidified in the second space 420, and the material solidified in the third space 430 may form a Figure 1D The material solidified in the fourth space 440 may be formed into a main body 610 of the injection molded shell 600. Figure 1D The tip portion 640 of the injection molded shell 600 is shown in FIG. Figure 1C The second inner sidewall 512 of the main chamber 510 may be located on one side of the first terminal assembly 100 (and / or the second terminal assembly 200) in the second direction Y and may have a spacing with the first terminal assembly 100 (and / or the second terminal assembly 200) so that Figure 1D The tip portion 640 of the injection-molded housing 600 can be located on one side of the first terminal assembly 100 (and / or the second terminal assembly 200) in the second direction Y, so that the connector provided in the embodiment of the present application can be connected to other connectors through the tip portion 640. In addition, compared to the related art that requires additional overlapping components to cover the cavity 650 and form the tip after forming the cavity 650, the embodiment of the present application uses injection molding to form the injection-molded housing 600 in a single step, which has the advantages of reducing processing steps and lowering process requirements.

[0063] refer to Figure 1B and Figure 1C The first terminal assembly 100 may have a first through hole 110. The mold 500 may have a first convex space 520. The first convex space 520 may be located on a side of the first terminal assembly 100 away from the second terminal assembly 200, and the first convex space 520 may be connected to the first space 410 through the first through hole 110. Figure 1D The material solidified and formed in the first convex space 520 can form the first convex portion 620 of the injection-molded shell 600.

[0064] Continue to refer Figure 1B and Figure 1C The second terminal assembly 200 may have a second through hole 210. The mold 500 may have a second convex space 530. The second convex space 530 may be located on a side of the second terminal assembly 200 away from the first terminal assembly 100, and the second convex space 530 may be connected to the second space 420 through the second through hole 210. Figure 1D The material solidified and molded in the second convex space 530 can form the second convex portion 630 of the injection-molded shell 600.

[0065] refer to Figure 1C The placeholder 300, the first terminal assembly 100 and the second terminal assembly 200 are all provided with positioning holes 700. It should be noted that, Figure 1C The locating holes 700 of the placeholder 300 are shown, while the locating holes 700 of the first terminal assembly 100 and the locating holes 700 of the second terminal assembly 200 are not shown. It should be understood that the axes of the locating holes 700 of the placeholder 300, the axes of the locating holes 700 of the first terminal assembly 100, and the axes of the locating holes 700 of the second terminal assembly 200 are collinear. In addition, the mold 500 is provided with a locating block 540.

[0066] When wrapping the mold 500 around the outside of the first terminal assembly 100 and the second terminal assembly 200, the positioning block 540 can be embedded in the positioning hole 700 to facilitate positioning between the mold 500 and the placeholder 300, thereby improving the processing accuracy of the process.

[0067] Optionally, the positioning hole 700 may pass through the placeholder 300 so that the first space 410 and the second space 420 can be connected through the positioning hole 700, and the material solidified in the first space 410 and the material solidified in the second space 420 can form a whole through the material solidified in the positioning hole 700 of the placeholder 300, and the material solidified in the first space 410 and the material solidified in the second space 420 can be supported by the material solidified in the positioning hole 700, so as to improve the structural strength of the injection molded shell 600.

[0068] refer to Figure 1D In step S1053, material is injected into the first space 410 and the second space 420 through the injection hole of the mold 500. After the material is solidified and formed, the mold 500 is opened and the placeholder 300 is removed, so that the solidified material has a cavity 650. The solidified material is the injection molded shell 600.

[0069] Specifically, a fluidized material can be injected through the injection hole and then solidified after drying. The material solidified in the first space 410, the material solidified in the second space 420, and the material solidified in the third space 430 can be connected to form the main body 610 of the injection-molded case 600. The main body 610 of the injection-molded case 600 can have a cavity 650 formed by removing the placeholder 300.

[0070] It's worth noting that the air in the cavity has a low dielectric constant. Using the cavity as a shielding material between the first and second terminal assemblies can reduce crosstalk. This is because air has a low dielectric constant, and impedance is inversely correlated with a low dielectric constant. Filling the cavity with air helps increase the impedance between the first and second terminal assemblies. Furthermore, the propagation of electromagnetic fields is related to the dielectric constant of the material. Air has a lower dielectric constant than sheet materials or LCP (Liquid Crystal Polymer). Filling the cavity with air effectively reduces the diffusion of the electromagnetic field, thereby reducing crosstalk.

[0071] In addition, the material solidified in the first convex space 520 and the first through-hole 110 can form a first convex portion 620 of the injection-molded case 600. The first convex portion 620 is connected to the main body 610 and passes through the first through-hole 110 to exit the first terminal assembly 100. In addition, the material solidified in the second convex space 530 and the second through-hole 210 can form a second convex portion 630 of the injection-molded case 600. The second convex portion 630 is connected to the main body 610 and passes through the second through-hole 210 to exit the second terminal assembly 200.

[0072] Furthermore, the material solidified and molded in the fourth space 440 may form a tip portion 640 of the injection molded housing 600. The tip portion 640 may be connected to the main body 610 and may be located on one side of the first terminal assembly 100 (and / or the second terminal assembly 200) in the second direction Y. The width of a portion of the tip portion 640 in the first direction X may decrease as it moves away from the first terminal assembly 100 (and / or the second terminal assembly 200).

[0073] Among them, the terms "upper" and "lower" are used to describe the relative position relationship of each structure in the accompanying drawings, which is only for the convenience of description and is not used to limit the scope of implementation of this application. Changes or adjustments to their relative relationships should also be regarded as the scope of implementation of this application without substantially changing the technical content.

[0074] It should be noted that, in this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0075] Furthermore, in this application, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "fixed," and the like should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0076] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for forming an injection molded shell for a connector, wherein the connector comprises a first terminal assembly and a second terminal assembly, wherein the first terminal assembly and the second terminal assembly are spaced apart along a first direction, wherein: The forming method comprises: placing a placeholder between the first terminal assembly and the second terminal assembly, so that a first space is formed between at least a portion of an outer surface of the placeholder and the first terminal assembly, and a second space is formed between at least a portion of an outer surface of the placeholder and the second terminal assembly; Wrapping the mold around the outside of the first terminal assembly and the second terminal assembly; Material is injected into the first space and the second space through the injection hole of the mold, and after the material is solidified, the mold is opened and the placeholder is removed, so that the solidified material has a cavity, and the solidified material is the injection-molded shell.

2. The forming method according to claim 1, wherein: The placeholder, the first terminal assembly, and the second terminal assembly are all provided with positioning holes, and the mold is provided with a positioning block; When the mold is wrapped around the outside of the first terminal assembly and the second terminal assembly, the positioning block is embedded in the positioning hole.

3. The forming method according to claim 2, wherein: The positioning hole passes through the placeholder.

4. The forming method according to any one of claims 1 to 3, characterized in that: The mold is formed with a main cavity for accommodating the first terminal assembly and the second terminal assembly, the main cavity having a first inner sidewall and a second inner sidewall opposite to each other in a second direction, the second direction being perpendicular to the first direction; When the mold is wrapped around the outside of the first terminal assembly and the second terminal assembly, there is a third space between at least part of the outer surface of the placeholder and the first inner wall; there is a fourth space between at least part of the outer surface of the placeholder and the second inner wall; the first space and the second space are connected through the third space and the fourth space.

5. The forming method according to claim 4, wherein: The first terminal assembly has a first through hole; the mold has a first convex space, the first convex space is located on a side of the first terminal assembly away from the second terminal assembly, and the first convex space is connected to the first space through the first through hole.

6. The forming method according to claim 4, wherein: The second terminal assembly has a second through hole; the mold has a second convex space, the second convex space is located on the side of the second terminal assembly away from the first terminal assembly, and the second convex space is connected to the second space through the second through hole.

7. A method for preparing a connector, characterized in that: include: forming a first terminal assembly; forming a second terminal assembly; Perform the forming method according to any one of claims 1 to 6.

8. A connector, characterized in that: comprising a first terminal assembly, a second terminal assembly, and an injection-molded shell formed by the forming method according to any one of claims 1 to 6; The injection molded housing includes a main body portion, the main body portion is located between the first terminal assembly and the second terminal assembly and has a cavity; The first terminal assembly has a first through hole, and the second terminal assembly has a second through hole; the injection molded shell also includes a first outer protrusion and a second outer protrusion, the first outer protrusion is connected to the main body and passes through the first through hole to exit the first terminal assembly, and the second outer protrusion is connected to the main body and passes through the second through hole to exit the second terminal assembly.

9. The connector according to claim 8, wherein: The injection molded shell further includes a tip portion, which is connected to the main body and is located on one side of the first terminal assembly and / or the second terminal assembly in the second direction.

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