Fixing sheet and backboard connector

Abstract

The utility model provides a fixing sheet and a backboard connector, and belongs to the field of connecting devices. The fixing piece comprises an end fixing part and a side fixing part, the side fixing part is provided with at least two sets of clamping jaws used for clamping the terminal module, the clamping jaws are arranged in the direction perpendicular to the end fixing part, and the clamping jaws in the same set are arranged in the direction parallel to the end fixing part and the side fixing part. And at least one group of clamping jaws are positioned in the middle of the terminal module in the plugging direction or at a position exceeding the middle of the terminal module when in use. The backboard connector comprises the fixing sheet. According to the utility model, at least two groups of clamping jaws are arranged, and at least one group of clamping jaws is arranged at the middle part of the terminal module in the plugging direction or at the position exceeding the middle part, so that the clamping range of the clamping jaws to the terminal module is enlarged, and the terminal module is supported by using the fixing sheets; the central position of the insulator of the terminal module is prevented from protruding when the backboard connector is installed on a printed board.

Description

Technical Field

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

[0002] Backplane connectors are widely used in core communication equipment such as switches and servers. Chinese invention patent application CN117353069A discloses a connector, which is a backplane connector. In this connector, the signal terminals of the terminal module are arranged in a wide-edge coupling configuration. Wide-edge coupling means that the arrangement direction of the signal terminal pairs is perpendicular to the arrangement direction of the two signal terminals in the same pair. The terminal module in this connector has two stacked insulators, with the two signal terminals in the same pair respectively housed within the two insulators. The two signal terminals in the same pair need to maintain uniform spacing and stable relative positions to ensure reliable differential signal transmission. However, because the two insulators are separate structures, they are not easily and reliably fixed together. During assembly, poor relative stability can easily lead to misalignment or uneven spacing, thus affecting the normal transmission of differential signals.

[0003] An existing backplane connector can solve the above problems; see appendix. Figure 1 The backplane connector mainly includes a housing 1 and terminal modules 2 mounted on the housing 1. Terminal modules 2 mainly include insulators 21, signal terminals 23 fixed to the insulators 21, and shielding plates 22. The signal terminals 23 are arranged in pairs for transmitting differential signals. The backplane connector also includes a fixing plate 3, which includes an end fixing portion 31 and a side fixing portion 32. The side fixing portion 32 includes a plate body 321 with multiple claws 322 arranged along the arrangement direction of the terminal modules 2. Two insulators 21 in the same terminal module 2 are engaged between two adjacent claws 322, thereby clamping the two insulators 21 in the same terminal module 2. However, the claws 322 on the fixing plate 3 can only clamp and secure one location of the terminal module 2, thus providing limited improvement in the relative stability of the two insulators 21 in the same terminal module 2.

[0004] Additionally, one end of the signal terminal extends out of the insulator, forming a signal fisheye. During use, the signal fisheye needs to be press-fitted into the fisheye mounting holes on the printed circuit board. The interference fit between the signal fisheye and the corresponding mounting hole results in significant resistance during the press-fit process. Generally, no pressing force is applied directly to the insulator during press-fitting. Instead, a tooling is used to apply a pressing force to the housing and retaining plate at both ends of the signal terminal in the insertion / removal direction. This force is transmitted to each signal fisheye through the insulator. However, the insulator itself has limited strength. Therefore, during the press-fitting process, the middle section of the insulator, lacking direct pressing force and support, is prone to bulging, making it difficult to press the corresponding signal fisheye into place and affecting the installation stability of the backplane connector. Utility Model Content

[0005] One of the objectives of this utility model is to provide a backplate connector to solve the technical problems of the two insulators in the same terminal module not being securely fixed in the prior art, and the technical problems of the insulator's middle position easily bulging during the pressing of the signal fisheye, making it difficult to press the signal fisheye into place.

[0006] Another objective of this invention is to provide a fixing piece that can solve the aforementioned technical problems when applied to a backplane connector.

[0007] To achieve the above objectives, the technical solution for the backplane connector provided by this utility model is as follows:

[0008] A backplane connector includes at least two terminal modules and a fixing plate for fixing each terminal module. The fixing plate includes an end fixing portion and a side fixing portion that are perpendicular to each other. The end fixing portion is located at one end of the terminal module in the insertion and removal direction, and the side fixing portion is located at one end of the terminal module in a direction perpendicular to the insertion and removal direction and the arrangement direction of each terminal module. The side fixing portion is provided with claws for clamping the terminal module. The claws are provided in at least two sets along the insertion and removal direction. Each claw in the same set is arranged along the arrangement direction of the terminal module. At least one set of claws is located at the middle or relatively middle of the terminal module in the insertion and removal direction, away from the end fixing portion.

[0009] As a further improvement, the side fixing part includes at least two pieces arranged along the insertion and removal direction, each piece having a set of claws bent on it, and a connecting body for fixing the two pieces together between adjacent pieces.

[0010] As a further improvement, the connector is integrally connected to the corresponding plate, and the claws on the connector and the corresponding plate are alternately arranged in the arrangement direction of the terminal module.

[0011] As a further improvement, an arc-shaped stress-relieving groove is provided on the plate body at the position between the connecting body and the adjacent claw.

[0012] As a further improvement, at least one set of claws is located at the end of the side fixing part away from the end fixing part.

[0013] As a further improvement, the insulator of the terminal module is provided with grooves at the positions where it mates with each claw, which can thin the corresponding parts of the insulator.

[0014] The beneficial effects are as follows: The backplane connector provided by this utility model is an improvement on the prior art. Based on the prior art, the fixing piece in this backplane connector has at least two sets of claws, with at least one set positioned at the center or beyond the center of the terminal module in the insertion / removal direction. This increases the clamping range of the claws on the terminal module, and the side fixing part provides support for the center position of the terminal module, preventing the insulator of the terminal module from bulging when the backplane connector is mounted on the printed circuit board. Furthermore, using at least two sets of claws to clamp each terminal module allows for more and wider clamping positions on the two insulators within the same terminal module, resulting in a more secure fit and improved relative stability.

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

[0016] A fixing plate includes an end fixing part installed on one end of a terminal module in the insertion / removal direction during use, and a side fixing part installed on one end of the terminal module in a direction perpendicular to the insertion / removal direction and the arrangement direction of each terminal module. The end fixing part and the side fixing part are perpendicular to each other. The side fixing part is provided with claws for clamping the terminal module. At least two sets of claws are provided in a direction perpendicular to the end fixing part. Each claw in the same set is arranged in a direction parallel to the end fixing part and the side fixing part. At least one set of claws is located in the middle of the terminal module in the insertion / removal direction or at a position away from the end fixing part from the middle during use.

[0017] As a further improvement, the side fixing part includes at least two pieces arranged in a direction perpendicular to the end fixing part, each piece having a set of claws bent on it, and a connecting body for fixing the two pieces to each other is provided between adjacent pieces.

[0018] As a further improvement, the connector is integrally connected to the corresponding plate, and the claws on the connector and the corresponding plate are alternately arranged in the arrangement direction of the terminal module.

[0019] As a further improvement, an arc-shaped stress-relieving groove is provided on the plate body at the position between the connecting body and the adjacent claw.

[0020] As a further improvement, at least one set of claws is located at the end of the side fixing part away from the end fixing part.

[0021] The beneficial effects are as follows: The fixing plate provided by this utility model is an improvement on the existing technology. Based on the existing technology, this fixing plate sets at least two sets of claws, with at least one set positioned at the center or beyond the center of the terminal module in the insertion / removal direction. This increases the clamping range of the claws on the terminal module, and the side fixing part provides support for the center position of the terminal module, preventing the insulator of the terminal module from bulging when the backplane connector is installed on the printed circuit board. Furthermore, using at least two sets of claws to clamp each terminal module allows for more and wider clamping positions on the two insulators within the same terminal module, thus enabling a more secure fit and improving relative stability. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an existing backplane connector;

[0023] Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of the backplate connector in this utility model;

[0024] Figure 3 This is a structural schematic diagram of a single terminal module in Embodiment 1 of the backplate connector of this utility model;

[0025] Figure 4 This is a schematic diagram of the fixing piece in Embodiment 1 of the backplate connector of this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Housing; 2. Terminal module; 21. Insulator; 211. Insert strip; 212. Baffle; 213. Groove; 22. Shielding sheet; 23. Signal terminal; 231. Plug end; 232. Signal fisheye; 3. Fixing piece; 31. End fixing part; 311. Slot; 32. Side fixing part; 321. Sheet body; 322. Claw; 323. Protrusion; 324. Stress relief groove; 325. Connector; 4. Positioning plate. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the embodiments.

[0029] To address the problems in the prior art, the basic concept of this utility model is to set at least two sets of claws, with at least one set positioned at the middle or beyond the middle of the terminal module in the insertion / removal direction. This increases the range of the claws clamping the terminal module and provides support for the terminal module using a fixing plate, preventing the middle of the insulator of the terminal module from bulging when the backplane connector is mounted on the printed circuit board.

[0030] Specific embodiment 1 of the backplane connector provided by this utility model:

[0031] A backplane connector, see attached Figure 2 It includes a housing 1, a terminal module 2, a fixing piece 3, and a positioning plate 4. The terminal module 2 is provided in at least two parts and is inserted into the housing 1.

[0032] In this invention, the insertion and removal direction of the backplate connector and the adapter connector is taken as the front-back direction, the end of the backplate connector and the adapter connector that are inserted is its front end, the arrangement direction of each terminal module 2 is the left-right direction, and the left-right direction is also the thickness direction of the terminal module 2.

[0033] See appendix Figure 3 Terminal module 2 includes an insulator 21, a shield 22, and a signal terminal 23. Each terminal module 2 has two insulators 21 arranged in a stacked configuration. Each insulator 21 has a signal terminal 23. The signal terminals 23 in a single insulator 21 are arranged perpendicular to both the front-back and left-right directions. Two opposing signal terminals 23 in two insulators 21 form a differential pair for transmitting differential signals. One end of the signal terminal 23 extends from the front end of the insulator 21 and forms a mating end 231 for mating with a corresponding terminal of the adapter connector. The other end of the signal terminal 23 extends from one end of the insulator 21 perpendicular to both the front-back and left-right directions and forms a signal fisheye 232. The signal fisheye 232 is used to press-fit the backplane connector into the signal mounting holes on the printed circuit board when it is mounted.

[0034] A terminal module 2 contains two shielding plates 22, which are located on the left and right sides of an assembly composed of two insulators 21, respectively. Each shielding plate 22 has a heat-fitting hole, and each insulator 21 has a heat-fitting post at a corresponding position that can pass through the heat-fitting hole. The shielding plate 22 can be fixed to the insulator 21 by secondary heat-fitting of the heat-fitting post. Simultaneously, to allow the two insulators 21 to interlock, one insulator 21 has a heat-fitting hole through which the heat-fitting post of the other insulator 21 passes.

[0035] The positioning plate 4 is installed at one end of the signal fisheye 232 of each terminal module 2. The structure of the positioning plate 4 is the same as that of the prior art, and will not be described in detail here.

[0036] See appendix Figure 4 The fixing piece 3 includes an end fixing part 31 and a side fixing part 32 that are perpendicular to each other. The end fixing part 31 is located at the rear end of the terminal module 2, and the side fixing part 32 is located at the other end of the terminal module 2 opposite to the end where the signal fisheye 232 is provided.

[0037] The end fixing part 31 is provided with a slot 311, and the rear end of the insulator 21 is provided with a strip 211 for insertion into the corresponding slot 311. The strips 211 of two insulators 21 in the same terminal module 2 are attached to each other to form a strip 211 assembly that can be inserted into the same slot 311 and engage with the slot 311. By using the engagement of the slot 311 and the strip 211 assembly, the two insulators 21 in the same terminal module 2 can be fastened. The rear end of the strip 211 is provided with a limit baffle 212 to limit the rearward movement of the end fixing part 31.

[0038] The side fixing part 32 includes at least two plates 321 arranged along the insertion and removal direction. Each plate 321 has a set of claws 322 bent at its front end. Each claw 322 in the same set is arranged along the arrangement direction of the terminal modules 2. A connecting body 325 for fixing the corresponding two plates 321 is provided between adjacent plates 321. The corresponding position of the terminal module 2 can be engaged between two adjacent claws 322. The claws 322 contact the insulators 21 of the terminal module 2. Both insulators 21 in the same terminal module 2 are engaged together between two adjacent claws 322, thus the claws 322 can also be used to fasten the two insulators 21 in the same terminal module 2.

[0039] The insulator 21 has a groove 213 for the latch 322 to engage, and the sidewall of the groove 213 has a chamfer at the insertion position of the latch 322. The groove 213 serves two purposes: firstly, it guides the latch 322, facilitating its assembly; secondly, it limits the latch 322 in the front-back direction, maintaining its stability. Furthermore, the groove 213 allows for thinning of the corresponding portion of the insulator 21, increasing the width of the latch 322 without increasing the spacing between adjacent terminal modules 2, thereby improving the strength of the latch 322.

[0040] The claw 322 has a protrusion 323 at the position where it contacts the insulator 21, which can increase the clamping force between the claw 322 and the insulator 21, and at the same time reduce the contact area, making assembly easier.

[0041] The connector 325 is integrally connected to the corresponding plate 321, and the claws 322 on the connector 325 and the corresponding plate 321 are alternately arranged in the arrangement direction of the terminal module 2. A stress-relieving groove 324 is provided on the plate 321 at the position between the connector 325 and the adjacent claw 322. The bottom of the stress-relieving groove 324 is an arc-shaped structure, which can prevent the claw 322 from breaking due to stress concentration at its root when subjected to force in the left and right directions.

[0042] At least one set of claws 322 is located at or beyond the center of the terminal module 2 in the insertion / removal direction. In this embodiment, three plates 321 are provided, and the three plates 321 are located at the rear, middle, and front of the terminal module 2, respectively. The front portion is farther from the end fixing portion 31 than the middle portion. The three plates 321 basically cover the front and rear distribution range of the signal fisheye 232, and the claws 322 on the three plates 321 can all be locked with the terminal module 2. The two insulators 21 in the same terminal module 2 are locked at more locations and over a larger area, thus enabling them to fit together more securely and improving relative stability.

[0043] Compared to existing technologies, the fixing piece 3 is larger in the front-to-back direction, thus providing support for the center of each terminal module 2. When the backplane connector is mounted onto the printed circuit board, the fixing piece 3 can distribute the pressing force, ensuring that the force is evenly applied to each terminal module 2, improving the problem of the insulator 21 easily bulging in the middle during the pressing of the signal fisheye 232. Furthermore, when a bulging tendency occurs in the middle of the insulator 21, both the front and rear pieces can pull on the second piece 322 in the middle, thereby suppressing the bulging phenomenon in the middle of the insulator 21.

[0044] Specific embodiment 2 of the backplane connector provided by this utility model:

[0045] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that in this embodiment, the claws on each piece are all at its rear end.

[0046] Specific embodiment 3 of the backplate connector provided by this utility model:

[0047] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the side fixing part in this embodiment includes only one piece. In order to ensure that the supporting fixing part has a large support range for the terminal module when the number of the second piece is only one, the size of the second piece in the front-back direction can be increased.

[0048] Specific embodiment 4 of the backplane connector provided by this utility model:

[0049] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the support and fixing part in this embodiment includes four pieces, each of which is provided with a claw. The four pieces are arranged at intervals along the front-back direction, and adjacent pieces are connected by a connector.

[0050] Compared to Example 1, this example has more plates and more claws, allowing the two insulators in the same terminal module to be secured at more locations.

[0051] Specific embodiment 5 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 the fixing plate in this embodiment does not have a stress-relieving groove. The cracking at the root of the claw can be avoided by increasing the thickness of the fixing plate.

[0053] Specific embodiment 6 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 connector is a connecting plate welded and fixed between adjacent plates, and the connecting plate overlaps on the side of the plate away from the terminal module.

[0055] In other embodiments of this example, a connecting plate can be used to fix all the pieces together as a whole.

[0056] Specific embodiment 7 of the backplate connector provided by this utility model:

[0057] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that no groove is provided on the insulator in this embodiment. The claws are directly clamped on the side of the insulator. In order to ensure that the claws have sufficient width, the spacing between adjacent terminal modules can be increased.

[0058] Specific embodiment 8 of the backplane connector provided by this utility model:

[0059] This embodiment is based on Embodiment 1. The difference between this embodiment and Embodiment 1 is that the main body of the side fixing part is a single piece of metal plate, and the claws are welded and fixed to the main body of the side fixing part.

[0060] Specific embodiments of the fixing plate provided by this utility model:

[0061] The fixing piece is the fixing piece in the specific embodiment of the backplate connector described above, and will not be described again.

[0062] 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. A backplane connector, comprising at least two terminal modules (2) and a fixing piece (3) for fixing each terminal module (2), the fixing piece (3) comprising an end fixing part (31) and a side fixing part (32) perpendicular to each other, the end fixing part (31) being located at one end of the terminal module (2) in the insertion / removal direction, the side fixing part (32) being located at one end of the terminal module (2) in a direction perpendicular to the insertion direction and the arrangement direction of each terminal module (2), the side fixing part (32) being provided with a claw (322) for clamping the terminal module (2), characterized in that, The claws (322) are provided in at least two sets along the insertion and removal direction. Each claw (322) in the same set is arranged along the arrangement direction of the terminal module (2). At least one set of claws (322) is located in the middle or relatively far from the end fixing part (31) of the terminal module (2) in the insertion and removal direction.

2. The backplane connector according to claim 1, characterized in that, The side fixing part (32) includes at least two pieces (321) arranged along the insertion and removal direction. Each piece (321) is provided with a set of claws (322) bent on it. A connecting body (325) for fixing the two pieces (321) is provided between adjacent pieces (321).

3. The backplane connector according to claim 2, characterized in that, The connector (325) is integrally connected to the corresponding plate (321), and the claws (322) on the connector (325) and the corresponding plate (321) are alternately arranged in the arrangement direction of the terminal module (2).

4. The backplane connector according to claim 3, characterized in that, An arc-shaped stress-relieving groove (324) is provided on the plate (321) at the position between the connector (325) and the adjacent claw (322).

5. The backplane connector according to any one of claims 1-4, characterized in that, At least one set of claws (322) is located at the end of the side fixing part (32) away from the end fixing part (31).

6. The backplane connector according to any one of claims 1-4, characterized in that, The insulator (21) of the terminal module (2) is provided with a groove (213) at the position where it mates with each claw (322) to thin the corresponding part of the insulator (21).

7. A fixing plate comprising an end fixing portion (31) installed on one end of a terminal module (2) in the insertion / removal direction during use, and a side fixing portion (32) installed on one end of the terminal module (2) in a direction perpendicular to the insertion direction and the arrangement direction of the terminal modules (2), wherein the end fixing portion (31) and the side fixing portion (32) are perpendicular to each other, and the side fixing portion (32) is provided with a claw (322) for clamping the terminal module (2), characterized in that, At least two sets of claws (322) are provided in a direction perpendicular to the end fixing part (31). Each claw (322) in the same set is arranged in a direction parallel to the end fixing part (31) and the side fixing part (32). At least one set of claws (322) is located in the middle or relatively away from the end fixing part (31) of the terminal module (2) in the insertion and removal direction during use.

8. The fixing piece according to claim 7, characterized in that, The side fixing part (32) includes at least two pieces (321) arranged in a direction perpendicular to the end fixing part (31). Each piece (321) is provided with a set of claws (322) bent on it. A connecting body (325) for fixing the two pieces (321) is provided between adjacent pieces (321).

9. The fixing piece according to claim 8, characterized in that, The connector (325) is integrally connected to the corresponding plate (321), and the claws (322) on the connector (325) and the corresponding plate (321) are alternately arranged in the arrangement direction of the terminal module (2).

10. The fixing piece according to any one of claims 7-9, characterized in that, An arc-shaped stress-relieving groove (324) is provided on the plate (321) at the position between the connector (325) and the adjacent claw (322).

11. The fixing piece according to claim 10, characterized in that, At least one set of claws (322) is located at the end of the side fixing part (32) away from the end fixing part (31).

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