阅读说明：本技术 一种板卡阶梯连接结构及信号连接器 (Board card ladder connection structure and signal connector ) 是由 陈峰跃 于 2021-07-30 设计创作，主要内容包括：本发明公开一种板卡阶梯连接结构,包括主板体、连接于主板体末端的延伸板体、贴附设置于主板体表面的第一金属触点、贴附设置于延伸板体表面的第二金属触点、埋设于主板体内并与第一金属触点保持预设间距的主走线层,以及埋设于主板体内并延伸至延伸板体内、与第二金属触点保持预设间距的副走线层,延伸板体的厚度小于主板体的厚度。如此,通过在主板体上增设延伸板体,并利用延伸板体与主板体的厚度不同使得第一金属触点与第二金属触点的分布高度位置不同,从而使得主走线层与副走线层在主板体内的埋设位置互相错开,能够在实现板卡间多路信号互联的基础上,同时保证信号传递质量。本发明还公开一种信号连接器,其有益效果如上。(The invention discloses a board ladder connecting structure, which comprises a main board body, an extension board body connected to the tail end of the main board body, a first metal contact attached to the surface of the main board body, a second metal contact attached to the surface of the extension board body, a main wiring layer embedded in the main board body and keeping a preset distance with the first metal contact, and an auxiliary wiring layer embedded in the main board body, extending into the extension board body and keeping a preset distance with the second metal contact, wherein the thickness of the extension board body is smaller than that of the main board body. So, through add the extension plate body on the mainboard body to utilize the thickness difference of extension plate body and mainboard body to make first metal contact different with the distribution height position of second metal contact, thereby make main routing layer and vice routing layer bury the position mutually and stagger underground at the mainboard is internal, can guarantee the signal transmission quality simultaneously on the basis of realizing multichannel signal interconnection between the integrated circuit board. The invention also discloses a signal connector, which has the beneficial effects.)

1. The utility model provides a board card ladder connection structure, its characterized in that, including the mainboard body (1), connect in the extending plate body (2), attached the setting in mainboard body (1) end extend plate body (2) on surface first metal contact (3), attached set up in extend second metal contact (4) on plate body (2) surface, bury underground in mainboard body (1) and with first metal contact (3) keep presetting main routing layer (5) of interval, and bury underground in mainboard body (1) and extend to extend in extending plate body (2), with second metal contact (4) keep presetting auxiliary routing layer (6) of interval, the thickness that extends plate body (2) is less than the thickness of mainboard body (1).

2. The stepped board card connecting structure according to claim 1, wherein the thickness of the main board body (1) is 2-3 times that of the extension board body (2).

3. A board ladder connection according to claim 2, characterized in that the main board body (1) and the extension board body (2) are connected by a first ramp surface (7).

4. The board ladder connection structure according to claim 1, wherein the first metal contact (3) and the second metal contact (4) are rectangular and are distributed along the length direction of the main board body (1) or the extension board body (2).

5. A card ladder connection according to claim 4, characterized in that the surfaces of the first metal contact (3) and the second metal contact (4) are provided with a reinforced conductive coating.

6. A signal connector adapted to the stepped board card connection structure of any one of claims 1 to 5, comprising a socket (8) and a socket (9) provided on the socket (8), wherein the socket (9) includes a first socket (91) located on the upper portion of the socket (8) and engaged with the main board body (1) and a second socket (92) located on the lower portion of the socket (8) and engaged with the extension board body (2), a first elastic piece (10) abutted against the first metal contact (3) is provided on a wall surface of the first socket (91), a second elastic piece (11) abutted against the second metal contact (4) is provided on a wall surface of the second socket (92), and a width of the first socket (91) is greater than a width of the second socket (92).

7. The signal connector according to claim 6, wherein the width of the first slot (91) is 2-3 times the width of the second slot (92).

8. The signal connector of claim 7, wherein the first slot (91) and the second slot (92) are connected by a second ramp surface (12).

9. The signal connector according to claim 6, wherein the first elastic piece (10) and the second elastic piece (11) are triangular and protrude from the wall surfaces of the first slot (91) and the second slot (92), respectively.

10. The signal connector according to claim 9, wherein the surfaces of the first elastic piece (10) and the second elastic piece (11) are provided with a reinforced conductive plating.

Technical Field

The invention relates to the technical field of servers, in particular to a board card ladder connecting structure. The invention also relates to a signal connector.

Background

With the development of the electronic technology in China, more and more electronic devices have been widely used.

Servers are important components in electronic devices, and are devices that provide computing services. Since the server needs to respond to and process the service request, the server has the capability of assuming and securing the service.

In the big data era, a large number of IT devices are centrally placed in racks of a data center. These data centers include various types of servers, storage, switches, and a large number of cabinets and other infrastructure. Each type of IT equipment is composed of various hardware boards, such as a computing module, a memory module, a chassis, a fan module, and the like. Generally, signal interconnection is performed between a plurality of boards in a server through cables or connectors, and for signal interconnection between a main board of the server and boards such as a graphic card, a hard disk backplane, a fan backplane, a power backplane, and the like, plug-in cooperation is formed through signal connectors such as a PCIE interface.

At present, a traditional PCIE interface generally uses gold fingers as connection pins to perform signal connection, and after a board card is inserted into a connector, each gold finger at the bottom end of the board card is respectively contacted with a metal elastic sheet in the connector, so that pin docking and signal interconnection are realized. However, the contact parts of the golden finger plate and the connector are generally designed in a single row, the number is limited, and the scene of interconnection of multiple signals cannot be supported.

In the prior art, part of the board cards adopt a double-row golden finger structure, but as shown in fig. 1, because the golden fingers and the internal wiring metal layer need to keep a consistent fixed spacing (L1) to ensure the signal quality, only the spacing between the first row of golden fingers and the wiring metal layer corresponding to the first row of golden fingers can be ensured, and the position of the wiring metal layer corresponding to the second row of golden fingers is already occupied by the wiring metal layer corresponding to the first row of golden fingers, so that the wiring metal layer corresponding to the second row of golden fingers can only be shifted, the spacing cannot be ensured, the distance is forcibly increased (L2) or decreased (L3), and the signal quality is reduced.

Therefore, how to realize the interconnection of the multiple paths of signals among the boards and ensure the quality of signal transmission simultaneously is a technical problem faced by the technical personnel in the field.

Disclosure of Invention

The invention aims to provide a board card ladder connection structure, which can realize interconnection of multiple paths of signals among board cards and ensure the signal transmission quality. It is another object of the present invention to provide a signal connector.

In order to solve the technical problems, the invention provides a board ladder connection structure, which comprises a main board body, an extension board body connected to the tail end of the main board body, a first metal contact attached to the surface of the main board body, a second metal contact attached to the surface of the extension board body, a main wiring layer embedded in the main board body and keeping a preset distance with the first metal contact, and an auxiliary wiring layer embedded in the main board body and extending into the extension board body and keeping a preset distance with the second metal contact, wherein the thickness of the extension board body is smaller than that of the main board body.

Preferably, the thickness of the main plate body is 2-3 times of the thickness of the extension plate body.

Preferably, the main plate body is connected with the extension plate body through a first slope surface.

Preferably, the first metal contact and the second metal contact are rectangular and distributed along the length direction of the main board body or the extension board body.

Preferably, the surfaces of the first metal contact and the second metal contact are provided with reinforced conductive coatings.

The invention also provides a signal connector which is adapted to any one of the board card stepped connection structures and comprises a socket and a connecting slot arranged on the socket, wherein the connecting slot comprises a first slot positioned on the upper part of the socket and matched with the mainboard body and a second slot positioned on the lower part of the socket and matched with the extension board body, a first elastic sheet abutted against a first metal contact is arranged on the wall surface of the first slot, a second elastic sheet abutted against a second metal contact is arranged on the wall surface of the second slot, and the width of the first slot is greater than that of the second slot.

Preferably, the width of the first slot is 2-3 times of the width of the second slot.

Preferably, the first slot and the second slot are connected through a second slope surface.

Preferably, the first elastic piece and the second elastic piece are both triangular and respectively protrude out of the wall surfaces of the first slot and the second slot.

Preferably, the surfaces of the first elastic sheet and the second elastic sheet are provided with reinforced conductive coatings.

The invention provides a stepped connection structure of a board card, which mainly comprises a main board body, an extension board body, a first metal contact, a second metal contact, a main wiring layer and an auxiliary wiring layer. Wherein, the mainboard body is the major structure, and the terminal position at the mainboard body is connected to the extension plate body. The first metal contact is attached to the surface of the main plate body, and the second metal contact is attached to the surface of the extension plate body. The main wiring layer is embedded in the main board body, keeps a preset distance with the first metal contact and is mainly used for forming signal connection with the first metal contact. The auxiliary wiring layer is embedded in the main board body and continuously extends into the extension board body, keeps a preset distance with the second metal contact and is mainly used for forming signal connection with the second metal contact. Importantly, the thickness of the extension plate body is smaller than that of the main plate body, so, the first metal contact on the surface of the main plate body and the second metal contact on the surface of the extension plate body are respectively located at different height (thickness) positions, and the main wiring layer corresponding to the first metal contact and the auxiliary wiring layer corresponding to the second metal contact are staggered in the height direction at the distribution positions in the main plate body, so that the fixed distance between the first metal contact and the main wiring layer and the fixed distance between the second metal contact and the auxiliary wiring layer can be respectively ensured. In summary, in the board ladder connection structure provided by the present invention, the extension board is additionally disposed on the main board body, and the distribution height positions of the first metal contacts and the second metal contacts are different by using the different thicknesses of the extension board and the main board body, so that the embedding positions of the main routing layer and the auxiliary routing layer in the main board body are staggered, and the signal transmission quality can be ensured simultaneously on the basis of realizing the multi-path signal interconnection between boards.

The signal connector provided by the invention is adaptive to the stepped connection structure of the board card to realize signal interconnection, and has the beneficial effects as described above.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a double-row gold finger and trace metal layer in the prior art.

Fig. 2 is a schematic structural diagram of a board card ladder connection structure according to an embodiment of the present invention.

Fig. 3 is a longitudinal sectional view of fig. 2.

Fig. 4 is a schematic diagram of a matching structure of the board card ladder connection structure and the signal connector according to an embodiment of the present invention.

Among them, in fig. 2 to 4:

the structure comprises a main board body-1, an extension board body-2, a first metal contact-3, a second metal contact-4, a main wiring layer-5, an auxiliary wiring layer-6, a first slope surface-7, a socket-8, a plug slot-9, a first elastic sheet-10, a second elastic sheet-11 and a second slope surface-12;

a first slot-91, a second slot-92.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 2 and 3, fig. 2 is a schematic diagram illustrating a board ladder connection structure according to an embodiment of the present invention, and fig. 3 is a longitudinal sectional view of fig. 2.

In a specific embodiment provided by the present invention, the board ladder connection structure mainly includes a main board body 1, an extension board body 2, a first metal contact 3, a second metal contact 4, a main routing layer 5, and an auxiliary routing layer 6.

Wherein, the main board body 1 is a main structure, and the extension board body 2 is connected at the end position of the main board body 1.

The first metal contact 3 is attached to the surface of the main board body 1, and the second metal contact 4 is attached to the surface of the extension board body 2.

The main wiring layer 5 is embedded in the main board body 1, keeps a preset distance with the first metal contact 3, and is mainly used for forming signal connection with the first metal contact 3. The auxiliary wiring layer 6 is embedded in the main board body 1 and continuously extends into the extension board body 2, keeps a preset distance with the second metal contact 4, and is mainly used for forming signal connection with the second metal contact 4.

It is important that the thickness of the extension plate body 2 is smaller than the thickness of the main plate body 1. Thus, the first metal contact 3 on the surface of the main board body 1 and the second metal contact 4 on the surface of the extension board body 2 are respectively located at positions with different heights (thicknesses), and a fixed distance is kept between the metal contacts and the wiring metal layer, so that the distribution positions of the main wiring layer 5 corresponding to the first metal contact 3 and the auxiliary wiring layer 6 corresponding to the second metal contact 4 in the main board body 1 are staggered in the height direction, and further, the fixed distance between the first metal contact 3 and the main wiring layer 5 and the fixed distance between the second metal contact 4 and the auxiliary wiring layer 6 can be respectively ensured.

In summary, the board ladder connection structure provided by this embodiment is formed by additionally providing the extension board body 2 on the main board body 1, and making the distribution height positions of the first metal contacts 3 and the second metal contacts 4 different by utilizing the different thicknesses of the extension board body 2 and the main board body 1, so that the embedding positions of the main wiring layer 5 and the auxiliary wiring layer 6 in the main board body 1 are staggered, and the signal transmission quality can be ensured on the basis of realizing interconnection of multiple signals among boards.

In a preferred embodiment regarding the main plate body 1 and the extension plate body 2, the thickness of the main plate body 1 is typically 2-3 times the thickness of the extension plate body 2. Of course, the specific thickness of the main plate body 1 and the extension plate body 2 can be adjusted according to actual needs.

In order to facilitate the connection between the main board body 1 and the extension board body 2, a first slope 7 is provided between the main board body 1 and the extension board body 2 in the present embodiment. Typically, the first sloped surface 7 may be at an angle of 30 ° to 60 °, such as 45 °. So set up, the connection transition region between the main board body 1 and the extension board body 2 is smoother, is favorable to sliding with signal connector's cooperation simultaneously.

In a preferred embodiment regarding the first metal contact 3 and the second metal contact 4, the first metal contact 3 and the second metal contact 4 are rectangular in structure and are distributed along the length direction (plugging direction) of the main board 1 or the extension board 2. Typically, the first metal contact 3 and the second metal contact 4 are both rectangular metal thin plates. Of course, the first metal contact 3 and the second metal contact 4 may also be in a dot-like structure so as to reduce stubs (signal stubs) formed when the first elastic piece 10 and the second elastic piece 11 respectively abut against the signal connector.

In addition, in order to improve the signal connection stability, the surfaces of the first metal contact 3 and the second metal contact 4 are coated with a reinforced conductive plating layer, such as a gold plating layer or a copper plating layer.

As shown in fig. 4, fig. 4 is a schematic view of a board card ladder connection structure and a signal connector according to an embodiment of the present invention.

The present embodiment further provides a signal connector, which is mainly adapted to the stepped connection structure of the board card in the foregoing embodiments to form plug-in mating and signal interconnection similar to plug and socket, and mainly includes a socket 8, a plug slot 9, a first elastic piece 10, and a second elastic piece 11.

Wherein, the socket 8 is a main body structure, and the socket slot 9 is arranged on the socket 8.

The socket 9 is a split structure, and specifically includes a first socket 91 and a second socket 92 that are communicated with each other. The first slot 91 is located in the upper half area of the socket 8, close to the outside, and is mainly used for forming a plug-in fit with the main board body 1 in the board card stepped connection structure; the second slot 92 is located inside the lower half area of the socket 8 and is mainly used for forming a plug-in fit with the extension board 2 in the board ladder connection structure. And, the width of the first slot 91 is greater than that of the second slot 92 so as to match the thickness of the main board body 1 greater than that of the extension board body 2.

The first elastic piece 10 is arranged on the wall surface of the first slot 91 and is mainly used for forming elastic butt with the first metal contact 3 in the board card ladder connection structure to realize signal transmission. The second elastic piece 11 is arranged on the wall surface of the second slot 92 and is mainly used for forming elastic abutment with the second metal contact 4 in the board card ladder connection structure to realize signal transmission.

In a preferred embodiment regarding the first slot 91 and the second slot 92, the width of the first slot 91 is typically 2-3 times the width of the second slot 92. Of course, the specific thickness of the first slot 91 and the second slot 92 can be adjusted according to actual needs.

In order to facilitate the communication between the first slot 91 and the second slot 92, the second slope surface 12 is disposed between the first slot 91 and the second slot 92. Generally, the second sloped surface 12 may have an angle of 30 ° to 60 °, such as an angle of 45 °. With this arrangement, the connection transition region between the first slot 91 and the second slot 92 is smoother, and at the same time, the sliding fit with the first slope surface 7 is facilitated.

In a preferred embodiment of the first elastic piece 10 and the second elastic piece 11, the first elastic piece 10 and the second elastic piece 11 are triangular and respectively protrude from the surfaces of the first slot 91 and the second slot 92 so as to respectively elastically abut against the first metal contact 3 and the second metal contact 4.

In addition, in order to improve the signal connection stability, the surfaces of the first elastic piece 10 and the second elastic piece 11 are coated with a reinforced conductive plating layer, such as a gold plating layer or a copper plating layer.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.