Insulator, terminal module and backboard connector

Abstract

The utility model provides an insulator, a terminal module and a backboard connector, and belongs to the field of connecting devices. The insulator comprises an insulation main body, the insulation main body is provided with hot riveting columns used for fixing a shielding sheet through hot riveting after penetrating through the shielding sheet and positioning columns used for penetrating through the shielding sheet and positioning the shielding sheet, and the insulator is characterized in that at least one positioning column is a hot riveting positioning column; the hot riveting positioning column comprises a positioning section used for being tightly matched with a corresponding positioning hole in the shielding sheet and a hot melting section used for forming a mushroom head structure after hot melting, and the positioning section is connected between the insulating body and the hot melting section. The terminal module comprises the insulator. The backboard connector comprises the terminal module. According to the utility model, the positioning column is used as a hot riveting positioning column, so that the connection strength between the shielding sheet and the insulator is improved under the condition that a relatively good positioning effect between the shielding sheet and the insulator is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of connection devices, and in particular relates to an insulator, a terminal module and a backplate connector. Background Technology

[0002] Backplane connectors are commonly used for high-speed interconnection between backplanes and daughterboards. Backplane connectors generally include a housing and terminal modules mounted on the housing. Each terminal module includes an insulator, a signal terminal fixed on the insulator, and a shield fixed on at least one side of the insulator in the thickness direction.

[0003] Insulators typically have hot-riveting posts, and shielding sheets have through holes for the hot-riveting posts to pass through. During shielding sheet assembly, the hot-riveting posts are first passed through the corresponding through holes, and then the ends of the hot-riveting posts are melted and extruded using hot-riveting equipment to form a mushroom-shaped structure, thereby fixing the shielding sheet. For example, Chinese invention patent application CN114079172A discloses a contact module for a plug assembly. This contact module has fixing posts on the dielectric frame (i.e., the insulator), and the shielding sheet has corresponding fixing post openings for the fixing posts to pass through. The fixing posts can be fixed to the shielding sheet by hot-melt riveting, thus forming the aforementioned hot-riveting posts. Furthermore, to improve the positioning of the shielding sheet relative to the dielectric frame, positioning posts are also provided on the dielectric frame, and the shielding sheet has corresponding positioning post openings for the positioning posts to pass through.

[0004] The positioning posts occupy space on the insulator, making it inconvenient to install additional fixing posts at the corresponding positions on the insulator, thus weakening the connection strength between the shield and the insulator. Furthermore, to ensure good positioning, the outer circumferential surface of the positioning post generally needs to fit tightly against the inner wall of the corresponding positioning post opening on the shield. This results in a large contact area, leading to significant resistance during assembly and making assembly difficult. Utility Model Content

[0005] One of the objectives of this invention is to provide an insulator to solve the technical problem in the prior art where it is impossible to install a hot riveting post at the location where the positioning post is set, resulting in weak connection strength between the shielding sheet and the insulator.

[0006] One of the objectives of this utility model is to provide a terminal module to solve the above-mentioned technical problems.

[0007] One of the objectives of this invention is to provide a backplane connector to solve the aforementioned technical problems.

[0008] To achieve the above objectives, the technical solution for the insulator provided by this utility model is as follows:

[0009] An insulator includes an insulating body, on which are provided hot-riveting posts for fixing a shielding sheet by hot riveting after passing through it, and positioning posts for passing through and positioning the shielding sheet. At least one positioning post is a hot-riveting positioning post, which includes a positioning section for tightly fitting with a corresponding positioning hole on the shielding sheet and a hot-melt section for forming a mushroom head structure after hot melting. The positioning section is connected between the insulating body and the hot-melt section.

[0010] As a further improvement, the hot riveting positioning post includes a column body and at least two positioning protrusions. Each positioning protrusion is spaced apart along the circumference of the column body. The positioning protrusions are distributed at least in the positioning section. The positioning protrusions on the positioning section are used to tightly fit with the sidewall of the corresponding positioning hole on the shielding plate. During assembly, the column body and the positioning protrusions can form an overflow cavity with the sidewall of the corresponding positioning hole on the shielding plate to allow excess material to flow in during the hot melting of the hot melting section.

[0011] As a further improvement, the column is a cylindrical structure, and the overflow cavity formed by the column, the positioning protrusion and the sidewall of the corresponding positioning hole on the shielding plate is a fan-shaped annular structure.

[0012] As a further improvement, the side of the positioning protrusion that contacts the sidewall of the positioning hole is an arc-shaped surface.

[0013] As a further improvement, the positioning protrusion is a strip-shaped structure that extends along the entire length of the positioning section and the hot-melt section.

[0014] The beneficial effects are: the insulator provided by this utility model is an improvement on the prior art. This insulator uses at least one positioning post as a hot-riveting positioning post that serves both as a positioning post for the shielding sheet and a hot-riveting fixing post, thereby ensuring a high connection strength between the shielding sheet and the insulator while maintaining the same positioning effect.

[0015] To achieve the above objectives, the technical solution for the terminal module provided by this utility model is as follows:

[0016] A terminal module includes an insulator and a shielding sheet. The insulator includes an insulating body, on which are provided a hot riveting post that passes through the shielding sheet and fixes the shielding sheet by hot riveting, and a positioning post that passes through the shielding sheet and positions the shielding sheet. At least one positioning post is a hot riveting positioning post. The hot riveting positioning post includes a positioning section that is tightly fitted with a corresponding positioning hole on the shielding sheet and a mushroom head structure formed by hot melting of the hot melt section. The mushroom head structure is located on the side of the shielding sheet away from the insulator.

[0017] As a further improvement, the hot riveting positioning post includes a column body and at least two positioning protrusions. Each positioning protrusion is arranged around the column body along the circumference of the column body. The positioning protrusions are distributed at least in the positioning section, and the positioning protrusions on the positioning section are tightly fitted with the sidewall of the positioning hole.

[0018] As a further improvement, the side of the positioning protrusion that contacts the sidewall of the positioning hole is an arc-shaped surface.

[0019] As a further improvement, the positioning protrusion is a strip-shaped structure.

[0020] The beneficial effects are: the terminal module provided by this utility model is an improvement on the prior art. This terminal module uses at least one positioning post on the insulator as a hot-riveting positioning post that serves as both a positioning post for the shielding sheet and a hot-riveting fixing post, thereby ensuring a high connection strength between the shielding sheet and the insulator while maintaining the same positioning effect between them.

[0021] To achieve the above objectives, the technical solution for the backplane connector provided by this utility model is as follows:

[0022] A backplane connector includes a housing and a terminal module mounted on the housing. The terminal module includes an insulator and a shield. The insulator includes an insulating body, and the insulating body is provided with a hot-riveting post that passes through the shield and fixes the shield by hot riveting, and a positioning post that passes through the shield and positions the shield. At least one positioning post is a hot-riveting positioning post. The hot-riveting positioning post includes a positioning section that is tightly fitted with a corresponding positioning hole on the shield and a mushroom head structure formed by hot melting of a hot-melt section. The mushroom head structure is located on the side of the shield away from the insulator.

[0023] As a further improvement, the hot riveting positioning post includes a column body and at least two positioning protrusions. Each positioning protrusion is arranged around the column body along the circumference of the column body. The positioning protrusions are distributed at least in the positioning section, and the positioning protrusions on the positioning section are tightly fitted with the sidewall of the positioning hole.

[0024] As a further improvement, the side of the positioning protrusion that contacts the sidewall of the positioning hole is an arc-shaped surface.

[0025] As a further improvement, the positioning protrusion is a strip-shaped structure.

[0026] The beneficial effects are: the backplane connector provided by this utility model is an improvement on the prior art. In the terminal module of this backplane connector, at least one positioning post on the insulator is a hot-riveting positioning post that serves both as a positioning post for the shielding sheet and a hot-riveting fixing post, thereby ensuring that the positioning effect between the shielding sheet and the insulator remains unchanged, while achieving a higher connection strength between the shielding sheet and the insulator. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the backplate connector in this utility model;

[0028] Figure 2 This is a schematic diagram of the terminal module in Embodiment 1 of the backplate connector of this utility model;

[0029] Figure 3 This is a partial structural diagram of the terminal module in Embodiment 1 of the backplate connector of this utility model;

[0030] Figure 4 This is a partial structural schematic diagram of the terminal module in Embodiment 1 of the backplate connector of this utility model from another perspective;

[0031] Figure 5 This is a cross-sectional view of the terminal module in Embodiment 1 of the backplate connector of this utility model;

[0032] Figure 6 This is a schematic diagram of the overall structure of the insulator in Embodiment 1 of this utility model.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Housing; 2. Terminal module; 21. Insulator; 211. Hot riveting positioning post; 2111. Post; 2112. Positioning protrusion; 212. Hot riveting post; 213. Hot melt positioning groove; 214. Insulating body; 22. Shielding sheet; 221. Positioning hole; 222. Through hole; 23. Signal terminal; 24. Overflow cavity. Detailed Implementation

[0035] The present invention will be further described in detail below with reference to the embodiments.

[0036] To address the problems in the prior art, the basic concept of this utility model is to use at least one positioning post as a hot-riveting positioning post, thereby improving the connection strength between the shielding sheet and the insulator while ensuring the positioning effect between them is not inconvenient.

[0037] Specific embodiment 1 of the backplane connector provided by this utility model:

[0038] See appendix Figure 1 The backplane connector includes a housing 1 and terminal modules 2 mounted on the housing 1. In this invention, the insertion and removal direction of the backplane connector and the adapter connector is taken as the front-rear direction, the end of the backplane connector that is inserted into the adapter connector is its front end, and the arrangement direction of each terminal module 2 is the left-right direction, which is also the thickness direction of the terminal module 2.

[0039] See appendix Figure 2Terminal module 2 includes an insulator 21, a shielding plate 22, and a signal terminal 23. Two shielding plates 22 are provided, located on the left and right sides of the insulator 21, respectively. The insulator 21 includes an insulating body 214 and hot-riveting posts 212 and positioning posts disposed on the left and right sides of the insulating body 214. The shielding plate 22 has through holes 222 corresponding to the hot-riveting posts 212 and allowing the posts to pass through. During assembly, the hot-riveting posts 212 are first passed through the shielding plate 22, and then the ends of the hot-riveting posts 212 are melted and extruded using a hot-riveting device to form a mushroom-shaped structure. Each hot-riveting post 212 has a hot-melt positioning groove 213 on its top surface for positioning and engagement with positioning pins on a hot-melt device.

[0040] There are three positioning posts, all of which are hot-riveted positioning posts 211. The shielding plate 22 is provided with positioning holes 221 that cooperate with the hot-riveted positioning posts 211. In other embodiments, one or two of the positioning posts can be set as hot-riveted positioning posts 211, while the other positioning posts do not participate in the hot riveting fixation.

[0041] The hot-riveted positioning post 211 includes a positioning section for tight fitting with the positioning hole 221 and a mushroom head structure, which is formed by hot-melting the original hot-melt section. The mushroom head structure is located on the side of the shielding sheet away from the insulating body.

[0042] Combined with appendix Figure 3 Appendix Figure 4 and appendix Figure 5 The hot-riveting positioning post 211 includes a post body 2111 and four positioning protrusions 2112. The post body 2111 has a cylindrical structure. The positioning protrusions 2112 are evenly arranged around the post body 2111 along the circumference of the post body 2111. The positioning protrusions 2112 are used to fit tightly with the sidewall of the positioning hole 221 to provide better positioning for the shielding sheet 22. At the same time, the contact area between the positioning protrusions 2112 and the sidewall of the positioning hole 221 is small, which can reduce the assembly resistance during the assembly process.

[0043] Compared with the prior art, in this embodiment, the hot-riveting positioning post 211 on the insulator 21 of the backplane connector can both serve as a hot-riveting fixation function and a positioning function for the shielding plate 22. Thus, while ensuring that the shielding plate 22 has a good positioning effect relative to the insulator 21, the connection strength between the shielding plate 22 and the insulator 21 is enhanced.

[0044] Because the column 2111 has a cylindrical structure, during the assembly of the shielding sheet 22 onto the insulator 21, the circumferential sidewall of the column 2111, the positioning protrusion 2112, and the corresponding positioning hole 221 form a fan-shaped overflow cavity 24, which serves as an outlet for excess material during the hot-melting process of the heat-welding section. The fan-shaped overflow cavity 24 is relatively evenly distributed in the circumferential direction, which helps the heat-melting section of the hot-riveting positioning column 211 to form a uniform mushroom-shaped structure. After the hot-riveting is completed, the overflow cavity 24 will be filled, thereby enhancing the fixing effect between the shielding sheet 22 and the insulator 21.

[0045] In this embodiment, the side of the positioning protrusion 2112 that contacts the side wall of the positioning hole 221 is an arc-shaped surface, which can ensure that the contact area between the arc-shaped surface of the positioning protrusion 2112 and the side wall of the positioning hole 221 is small. At the same time, the arc-shaped surface has better strength than the edge and is not easily damaged during assembly.

[0046] The positioning protrusions 2112 are distributed at least at the positioning section. In one embodiment of this example, the positioning protrusions 2112 extend along the axial direction of the column 2111 to the hot-melt section, thereby forming a full-length arrangement along the axial direction of the hot-riveted positioning column 211. In other embodiments, the positioning protrusions 2112 may be provided only at the positioning section and not extend to the hot-melt section.

[0047] Specific embodiment 2 of the backplane connector provided by this utility model:

[0048] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the positioning protrusion in this embodiment is a triangular prism structure, and one edge of the positioning protrusion contacts the side wall of the positioning hole.

[0049] Specific embodiment 3 of the backplate connector provided by this utility model:

[0050] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that in this embodiment, three positioning protrusions are provided and are evenly distributed along the circumference of the column.

[0051] Specific embodiment 4 of the backplane connector provided by this utility model:

[0052] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that there are two positioning protrusions in this embodiment, which are evenly distributed along the circumference of the column.

[0053] Specific embodiment 5 of the backplane connector provided by this utility model:

[0054] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the column in this embodiment is a quadrangular prism structure, and four positioning protrusions are respectively set on the four edges of the column.

[0055] Specific embodiment 6 of the backplane connector provided by this utility model:

[0056] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the hot riveting positioning post does not have a positioning protrusion, and the hot riveting positioning post is a cylindrical structure of equal diameter.

[0057] Specific embodiment 7 of the backplate connector provided by this utility model:

[0058] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that no positioning protrusion is provided on the hot riveting positioning post. In order to reduce the resistance during the assembly process, the diameter of the positioning section of the hot riveting positioning post is larger than the diameter of the hot melt section, and a chamfer is provided between the positioning section and the hot melt section to guide the assembly.

[0059] Specific embodiments of the terminal module provided by this utility model:

[0060] This terminal module is the same as the terminal module in the specific embodiment of the backplane connector described above, and will not be described again.

[0061] Specific embodiment 1 of the insulator provided by this utility model:

[0062] See appendix Figure 6 The insulator includes an insulating body 214 and hot riveting posts 212 and positioning posts disposed on the left and right sides of the insulating body 214. Each hot riveting post 212 has a hot-melt positioning groove 213 on its top surface for positioning and engaging with the positioning pin on the hot-melt equipment. During the assembly process, the hot riveting equipment can melt and extrude the ends of the hot riveting posts 212 to form a mushroom head structure.

[0063] There are three positioning posts, and all three positioning posts are hot-riveted positioning posts 211. In other embodiments, one or two of the positioning posts can be set as hot-riveted positioning posts 211, while the other positioning posts do not participate in hot riveting.

[0064] The hot-riveting positioning post 211 includes a positioning section for tight fitting with the positioning hole 221 on the shielding sheet and a hot-melt section that can form a mushroom head structure after hot melting. The hot-melt section is located at the end of the positioning section away from the insulating body. A hot-melt positioning groove 213 is also provided at the center of the end face of the hot-melt section away from the positioning section, so as to facilitate the hot riveting operation of the hot-riveting positioning post 211 during the assembly process.

[0065] The hot-riveting positioning post 211 includes a post body 2111 and four positioning protrusions 2112. The post body 2111 has a cylindrical structure, and the positioning protrusions 2112 are evenly arranged around the post body 2111 along its circumference. The positioning protrusions 2112 are used to tightly fit with the sidewalls of the positioning holes on the shielding sheet. Compared with the prior art, in this embodiment, the hot-riveting positioning post 211 on the insulator can both hot-rivet fix the shielding sheet and position it during assembly and use.

[0066] Since column 2111 is a cylindrical structure, please refer to the appendix. Figure 3 Appendix Figure 4 and appendix Figure 5 During the process of assembling the shielding sheet onto the insulator 21, the circumferential sidewall of the column 2111 and the sidewall of the positioning protrusion 2112 and the corresponding positioning hole form a fan-shaped overflow cavity that can be used as an overflow cavity for excess material to flow into during the hot melting of the heat supply section.

[0067] In this embodiment, the side of the positioning protrusion 2112 that contacts the side wall of the positioning hole 221 is an arc-shaped surface. This ensures that the contact area between the arc-shaped surface of the positioning protrusion 2112 and the side wall of the positioning hole is small during assembly. At the same time, the arc-shaped surface has better strength than the edge and is not easily damaged during assembly.

[0068] The positioning protrusions 2112 are distributed at least at the positioning section. In one embodiment of this example, the positioning protrusions 2112 extend along the axial direction of the column 2111 to the hot-melt section, thereby forming a full-length arrangement along the axial direction of the hot-riveted positioning column 211. In other embodiments, the positioning protrusions 2112 may be provided only at the positioning section and not extend to the hot-melt section.

[0069] Specific embodiment 2 of the insulator provided by this utility model:

[0070] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the positioning protrusion in this embodiment is a triangular prism structure, and one edge of the positioning protrusion contacts the side wall of the positioning hole.

[0071] Specific embodiment 3 of the insulator provided by this utility model:

[0072] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that in this embodiment, three positioning protrusions are provided and are evenly distributed along the circumference of the column.

[0073] Specific embodiment 4 of the insulator provided by this utility model:

[0074] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that there are two positioning protrusions in this embodiment, which are evenly distributed along the circumference of the column.

[0075] Specific embodiment 5 of the insulator provided by this utility model:

[0076] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the column in this embodiment is a quadrangular prism structure, and four positioning protrusions are respectively set on the four edges of the column.

[0077] Specific embodiment 6 of the insulator provided by this utility model:

[0078] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the hot riveting positioning post does not have a positioning protrusion, and the hot riveting positioning post is a cylindrical structure of equal diameter.

[0079] Specific embodiment 7 of the insulator provided by this utility model:

[0080] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that no positioning protrusion is provided on the hot riveting positioning post. In order to reduce the resistance during the assembly process, the diameter of the positioning section of the hot riveting positioning post is larger than the diameter of the hot melt section, and a chamfer is provided between the positioning section and the hot melt section to guide the assembly.

[0081] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An insulator, comprising an insulating body (214), wherein the insulating body (214) is provided with a heat-riveting post (212) for passing through a shielding sheet (22) and fixing the shielding sheet (22) by heat riveting, and a positioning post for passing through the shielding sheet (22) and positioning the shielding sheet (22), characterized in that, At least one positioning post is a hot-riveted positioning post (211). The hot-riveted positioning post (211) includes a positioning section for tight fitting with the corresponding positioning hole (221) on the shielding sheet (22) and a hot-melt section for forming a mushroom head structure after hot melting. The positioning section is connected between the insulating body (214) and the hot-melt section.

2. The insulator according to claim 1, characterized in that, thermal... The rivet positioning post (211) includes a post body (2111) and at least two positioning protrusions (2112). Each positioning protrusion (2112) is arranged at intervals along the circumference of the post body (2111). The positioning protrusions (2112) are distributed at least in the positioning section. The positioning protrusions (2112) on the positioning section are used to tightly fit with the sidewall of the corresponding positioning hole (221) on the shielding plate (22). During assembly, the post body (2111) and the positioning protrusions (2112) can form an overflow cavity (24) for excess material to flow into during the hot melting of the heat fusion section with the sidewall of the corresponding positioning hole (221) on the shielding plate (22).

3. The insulator according to claim 2, characterized in that, The column (2111) is a cylindrical structure. When in use, the overflow cavity (24) formed by the column (2111), the positioning protrusion (2112) and the side wall of the corresponding positioning hole (221) on the shield (22) is a fan-shaped annular structure.

4. The insulator according to claim 2 or 3, characterized in that, The side of the positioning protrusion (2112) that contacts the sidewall of the positioning hole (221) is arc-shaped.

5. The insulator according to claim 2 or 3, characterized in that, The positioning protrusion (2112) is a strip structure that extends along the entire length of the positioning section and the hot-melt section.

6. A terminal module, comprising an insulator (21) and a shielding plate (22), wherein the insulator (21) comprises an insulating body (214), and the insulating body (214) is provided with a heat-riveting post (212) that passes through the shielding plate (22) and is fixed to the shielding plate (22) by heat riveting, and a positioning post that passes through the shielding plate (22) and positions the shielding plate (22), characterized in that, At least one positioning post is a hot-riveted positioning post (211). The hot-riveted positioning post (211) includes a positioning section that fits tightly with the corresponding positioning hole (221) on the shielding sheet (22) and a mushroom head structure formed by the hot-melt section after hot melting. The mushroom head structure is located on the side of the shielding sheet (22) away from the insulator (21).

7. The terminal module according to claim 6, characterized in that, heat... The rivet positioning post (211) includes a post body (2111) and at least two positioning protrusions (2112). Each positioning protrusion (2112) is arranged around the post body (2111) along the circumference of the post body (2111). The positioning protrusions (2112) are distributed at least in the positioning section. The positioning protrusions (2112) on the positioning section are tightly fitted with the sidewall of the positioning hole (221).

8. The terminal module according to claim 7, characterized in that, The side of the positioning protrusion (2112) that contacts the sidewall of the positioning hole (221) is an arc-shaped surface.

9. The terminal module according to claim 7, characterized in that, The positioning protrusion (2112) is a strip-shaped structure.

10. A backplane connector, comprising a housing (1) and a terminal module mounted on the housing (1), characterized in that, The terminal module is the terminal module as described in any one of claims 6-9.

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