Fixing device

Abstract

The utility model relates to the technical field of electronic manufacturing, and discloses a fixing device which is used for combining a plurality of first PCBs and installing the first PCBs on a second PCB, and comprises a fixing frame which is provided with an upper plate and a lower plate which are vertically symmetrical, the upper plate is provided with a plurality of upper open holes, the lower plate is provided with lower open holes opposite to the upper open holes, and the upper plate is provided with a plurality of lower open holes; the first PCB is installed and fixed between the lower opening hole and the upper opening hole in a matched mode so that the first PCB can be limited on the fixing frame. The mounting column is mounted and fixed on the upper plate; the limiting cover is arranged on the first PCB in a covering manner and is mounted and fixed on the mounting column; and the fixing feet are connected with the fixing frame and are installed and fixed on the second PCB. In this way, the structure is simple, use is convenient, and the production cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic manufacturing, in particular to a fixing device. Background Art

[0002] When designing a server system PCBA or bridge board, a suitable connector on the market will be selected for system configuration. However, due to the difference in the system, the height of the connector will be different. That is, when designing the PCBA or bridge board, it is necessary to develop molds corresponding to connectors of different heights, resulting in high production costs. In addition, during configuration, multiple connectors are generally required to match, and a corresponding auxiliary fixture needs to be set for each PCBA or bridge board. In order to reserve maintenance personnel to disassemble and assemble the PCBA or bridge board and its corresponding auxiliary fixture during maintenance, it is necessary to reserve maintenance operation space for each PCBA or bridge board on the substrate where the PCBA or bridge board is installed. Therefore, both the space occupied by the substrate and the time spent on installing each PCBA or bridge board are quite wasteful, which further leads to an increase in production costs. Therefore, it is necessary to develop a new type of fixing device. Utility Model Content

[0003] The purpose of the utility model is to provide a fixing device with simple structure, convenient use and effective reduction of production cost.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A fixing device, used for combining a plurality of first PCB boards and installing them on a second PCB board, comprises: a fixing frame, having an upper plate and a lower plate symmetrical in upper and lower directions, the upper plate being provided with a plurality of upper openings, the lower plate being provided with lower openings at positions opposite to the upper openings, the lower openings being matched with the upper openings to install and fix the first PCB board so that the first PCB board is limited on the fixing frame; a mounting column, fixedly installed on the upper plate; a limiting cover, which is provided on the first PCB board and fixedly installed on the mounting column; and a fixing foot, connected to the fixing frame and fixedly installed on the second PCB board.

[0006] Preferably, after the limiting cover is installed and fixed on the mounting post, the limiting cover presses the first PCB board toward the upper board to limit the position of the first PCB board.

[0007] Preferably, the cross-sectional length of the upper opening is the same as the cross-sectional length of the first PCB board.

[0008] Preferably, the upper opening includes a symmetrically arranged limit opening, a limit area is arranged on one side of the limit opening on the upper plate, and the limit area is symmetrically arranged on the upper plate. When the first PCB board is installed to the upper opening, the limit area is arranged against the first PCB board.

[0009] Preferably, two side walls are arranged between the upper plate and the lower plate, and the two side walls, the upper plate and the lower plate together surround and form an accommodating space, and an opening is arranged on both sides of the accommodating space.

[0010] Preferably, the first PCB board includes a first connecting portion, a flat portion, a accommodating portion and a second connecting portion which are sequentially connected from top to bottom. When the first PCB board is mounted on the second PCB board, the first connecting portion and the flat portion are both located above the upper opening, the accommodating portion is located in the accommodating space, and the second connecting portion is located below the lower opening.

[0011] Preferably, a first limiting protrusion is provided on one end of the flat portion close to the accommodating portion, and when the first PCB board is mounted on the second PCB board, the first limiting protrusion is disposed against the upper board.

[0012] Preferably, a second limiting protrusion is provided on one end of the accommodating portion close to the second connecting portion, and when the first PCB board is mounted on the second PCB board, the second limiting protrusion is disposed against the lower board.

[0013] Preferably, a connector is provided on the first PCB board, and a second connection interface that cooperates with the connector is provided on the second PCB board. When the first PCB board passes through the upper board and the lower board from top to bottom in sequence, the connector is inserted into the second connection interface of the second PCB board.

[0014] Preferably, the mounting column is arranged between two adjacent upper openings and at least two mounting columns are provided.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the fixing device greatly simplifies the arrangement of the connectors when designing the PCBA board and the bridge board, and the installation of multiple first PCB boards on the second PCB board can be achieved by using only the commonly used standard connection interface, without the need to use connectors of different heights according to actual needs, effectively solving the deficiencies in the background technology and reducing the overall production cost. Moreover, since the connection interface is a commonly used standard part, the production efficiency can also be greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the structure of the fixing device;

[0017] Figure 2 It is a schematic diagram of the installation between the fixing device, the first PCB board and the second PCB board;

[0018] Figure 3 It is a schematic diagram of the limit opening and the limit area on the upper plate.

[0019] Explanation of reference numerals in the figure: 1. first PCB board; 101. connector; 102. first connecting portion; 1021. third connecting portion; 103. flat portion; 1031. first limiting protrusion; 104. accommodating portion; 1041. second limiting protrusion; 105. second connecting portion; 2. second PCB board; 201. second connecting interface; 202. plastic gasket; 3. fixing frame; 301. upper plate; 3011. Upper opening; 3012, first inner surface; 3013, first outer surface; 3014, limiting area; 3015, limiting opening; 302, lower plate; 3021, lower opening; 3022, second inner surface; 3023, second outer surface; 304, side wall; 305, accommodating space; 3051, opening; 4, mounting column; 5, limiting cover; 501, second bolt; 6, fixing foot; 601, first bolt. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] See also Figure 1 and Figure 2 The utility model provides a fixing device for combining a plurality of first PCB boards 1 and installing them on a second PCB board 2. During assembly, the plurality of first PCB boards 1 are first assembled on the same board, namely, the second PCB board 2. Then, by providing a highly consistent second connection interface 201 on the second PCB board 2 and a connecting piece 101 corresponding to the second connection interface 201 on the first PCB board 1, the connecting piece 101 is matched and connected with the second connection interface 201. The matching installation of the connecting piece 101 and the second connection interface 201 satisfies the plug-in installation of the first PCB board 1 on the second PCB board 2. Finally, the combination of the plurality of first PCB boards 1 on the second PCB board 2 is realized by the fixing device. It should be noted that the height of the second connection interface 201 on the second PCB board 2 is consistent, and it can be produced quickly during production without developing corresponding molds for the second connection interfaces 201 of different heights. Under the action of the fixing device, the installation requirements of different lengths of different first PCB boards 1 can be adapted. Moreover, through the fixing device of the utility model, a plurality of first PCB boards 1 are first combined at a preset spacing, and then the combined plurality of first PCB boards 1 are installed on the second PCB board 2 together, without the need to manually install each first PCB board 1 one by one, which well solves the shortcomings of the background technology and greatly reduces the production cost. At the same time, the structure is simple and very convenient to use.

[0025] See also Figure 1 and Figure 2In this embodiment, the fixing device includes a fixing frame 3, and the fixing frame 3 has an upper plate 301 and a lower plate 302 which are symmetrical in the upper and lower parts, wherein two side walls 304 are arranged between the upper plate 301 and the lower plate 302, and the two side walls 304 are connected between the upper plate 301 and the lower plate 302, so that an accommodating space 305 is formed by the upper plate 301, the lower plate 302 and the two side walls 304, wherein the accommodating space 305 has two opposite openings 3051, so that the wind flow is guided to flow through the accommodating space 305 through the two opposite openings 3051, thereby helping the first PCB board 1 to dissipate heat, and the first PCB board 1 includes The first PCB board 1 is connected to the second PCB board 2, wherein the connector 101 is arranged on the second connecting portion 105, and the first connecting portion 102 includes a third connecting member 1021. When the first PCB board 1 is connected to the second PCB board 2, the second PCB board can be electrically connected to at least one device connected to the first PCB board 1 and the third connecting member 1021. That is, the second PCB board 2 can be electrically connected to the second connecting interface 201, the connector 101, the second connecting portion 105, the accommodating portion 104, the flattened portion 103, the first connecting portion 102 and the third connecting member 1021 is electrically connected to at least one of the devices, wherein a first limiting protrusion 1031 is further provided at one end of the flattened portion 103 close to the accommodating portion 104. When at least a portion of the structure of the first PCB board 1 passes through the upper plate 301 and the lower plate 302, and the flattened portion 103 and the second connecting portion 105 are respectively located outside the accommodating space 305, the accommodating portion 104 is located in the accommodating space 305, that is, the flattened portion 103 is located close to a first outer surface 3013 of the upper plate 301 and away from a first inner surface 3012 of the upper plate 301; and the second connecting portion 105 is located close to the lower plate 302. The first PCB board 1 is positioned on the fixing frame 3, and the first PCB board 1 is positioned at a second outer surface 3023 and away from a second inner surface 3022 of the lower plate 302. Then, the first PCB board 1 to be installed is moved along the plane extension direction of the upper plate 301, so that the first limiting protrusion 1031 abuts against the outer surface of the upper plate 301. As a result, the first PCB board 1 is limited by the first limiting protrusion 1031, and the flattening portion 103 cannot continue to move toward the direction close to the lower plate 302. The first PCB board 1 is positioned on the fixing frame 3, and then the connecting member 101 is inserted into the second connecting interface 201 of the corresponding second PCB board 2.

[0026] Thus, the fixing device realizes the combination of multiple first PCB boards 1 on the second PCB board 2. Specifically, the upper plate 301 is provided with multiple upper openings 3011, and the lower plate 302 is provided with multiple lower openings 3021 at positions corresponding to the upper openings 3011 of the upper plate 301, and the lower openings 3021 cooperate with the upper openings 3011 to install and fix the first PCB board 1, wherein a second limiting protrusion 1041 is provided at one end of the accommodating portion 104 close to the second connecting portion 105, and when the first PCB board 1 is moved to make the first PCB board 1 When a limiting protrusion 1031 abuts against the first outer surface 3013 of the upper plate 301 to limit the first PCB board 1, the second limiting protrusion 1041 of the accommodating portion 104 is linked to abut against the second inner surface 3022 of the lower plate 302, so that the first PCB board is limited on the fixing frame 3 by the first limiting protrusion 1031 of the flat portion 103 and the second limiting protrusion 1041 of the accommodating portion 104. The accommodating portion 104 is limited between the lower opening 3021 and the upper opening 3011, so that the accommodating portion 104 cannot continue to move and cannot pass through the lower opening 3021, and the flattening portion 103 and the first connecting portion 102 are limited to the outside of the fixing frame 3, close to the upper opening 3011 and away from an upper side of the lower opening 3021; ​​further, the second connecting portion 105 is limited to the outside of the fixing frame 3, close to the lower opening 3021 and away from the upper opening 3011, thereby, the first limiting protrusion 1031 and the second limiting protrusion 1041 both have the function of limiting the first PCB board, and the maximum width of the lower opening 3021 and the upper opening 3011 can be set to be equivalent to or greater than the maximum thickness of the first PCB board 1, so that part of the structure of the first PCB board can pass through the upper opening 3021 and the upper opening 3011.

[0027] Secondly, in another embodiment, the maximum width of the lower opening 3021 and the upper opening 3011 can be set to be equal to the maximum thickness of the first PCB board 1, thereby, the lower opening 3021 and the upper opening 3011 can also prevent the first PCB board 1 from shaking back and forth and left and right after being installed on the fixing frame 3, and ensure that the first PCB board 1 can be stably installed on the fixing frame 3. In addition, here, according to the number of first PCB boards 1 that may need to be set in actual production, a corresponding number of upper openings 3011 and lower openings 3021 can be set on the fixing frame 3, and the number of combinations between them can be 2 groups, 3 groups, or 4 groups, or other positive integers of more than 4 groups.

[0028] Further, see Figure 3The upper opening 3011 is in the shape of an elongated strip and has limiting openings 3015 at both ends. The width of the limiting opening 3015 is the same as the width of the first PCB board 1. The upper opening 3011 includes at least one limiting opening 3015, and the limiting opening 3015 is arranged at at least one of the two ends of the upper opening 3011. The following takes the upper opening 3011 including two limiting openings 3015 as an example, and the two limiting openings are respectively arranged at the two ends of the upper opening 3011. The width of the limiting opening 3015 is the same as the width of the first PCB board 1. By setting the limiting opening 3015 with the same width as the first PCB board 1, the first PCB board 1 can be inserted into the upper opening. The upper opening 3011 is stuck without shaking toward the two sides of the first PCB board 1, further limiting the position of the first PCB board 1 on the fixing frame 3. At the same time, the length of the upper opening 3011 can be set to be equal to or slightly larger than the cross-sectional length of the first PCB board 1 corresponding to the upper opening 3011, so that the first PCB board 1 can fine-tune its own position at the position of the upper opening 3011 corresponding to the plane direction of the upper plate 301. After the position is adjusted, the current adjusted position can be fixed under the action of the limiting opening 3015, making the entire installation process more convenient and quick, so that the upper opening 3011 can be suitable for the installation of first PCB boards 1 of different sizes.

[0029] Further, see Figure 3 , the upper plate 301 is provided with at least one limiting area 3014 on one side close to the limiting opening 3015. In the following, the limiting area 3014 is provided on at least one end of the upper plate 301 close to the upper opening 3011 as an example. Alternatively, the limiting area 3014 may be symmetrically provided on both ends of the upper plate 301 close to the upper opening 3011. When at least part of the structure of the first PCB board 1 passes through the upper opening 3011 and is installed on the fixing frame 3, the first limiting protrusion 1031 abuts against the corresponding limiting area 3014, thereby making the upper plate 301 abut against the first PCB board 1. The limiting area 3014 may be a wall on the upper plate 301 for abutting against the first PCB board 1. The moving position of the first PCB board 1 on the fixing frame 3 may be further limited by the limiting area 3014, thereby preventing the first PCB board 1 from having a large deviation in the vertical direction.

[0030] Next, the side wall 304 between the upper plate 301 and the lower plate 302 and on the same side includes two overlapping wall bodies, and the two wall bodies are respectively connected to the upper plate 301 and the lower plate 302, wherein a connecting hole 303 is provided on each of the two wall bodies, and the two are connected and fixed to each other by installing a third bolt 3031 on the connecting hole 303 to fix the two corresponding overlapping wall bodies. In another embodiment, the upper plate 301 and the lower plate 302 are integrally formed, and the wall body of the same side wall 304 is set as a detachable structure, so that the installation and disassembly between the two are more convenient, and the connecting hole 303 and the third bolt 3031 are also set on the side wall 304 to achieve the installation and fixation between the two. In addition, a rectangular opening is provided on the two side walls 304 of the fixing frame 3, through which the operator can observe the installation status of the first PCB board 1 in the fixing frame 3, and also helps the heat dissipation of the first PCB board 1.

[0031] See also Figure 1In this embodiment, the fixing device further includes a mounting post 4 and a limiting cover 5. The mounting post 4 is fixedly mounted on the upper plate 301 and extends from the upper plate 301 in a direction away from the upper plate 301. The mounting post 4 is arranged between any two adjacent upper openings 3011 or their extension lines and the number of the mounting post 4 can be one, but is not limited thereto. The number of the mounting post 4 can also be 2 or more, which is arranged according to the device requirements. The mounting post 4 is used to cooperate with the limiting cover 5 for installation. The limiting cover 5 is arranged on the first PCB board 1. The limiting cover 5 abuts against the flat portion 103 of the first PCB board 1 installed on the fixing frame 3, and the limiting cover 5 is fixedly mounted on the mounting post 4, so as to limit the position of the first PCB board 1 on the fixing frame 3 through the limiting cover 5, so as to prevent the first PCB board 1 from shaking in a direction perpendicular to the plane of the upper plate 301 after being installed on the fixing frame 3, thereby preventing the first PCB board 1 from being separated from the fixing frame 3. When the limiting cover 5 is installed and fixed on the mounting post 4, the limiting cover 5 and the upper plate 301 clamp the first limiting protrusion 1031 of the flat portion 103 of the first PCB board 1, and the first limiting protrusion 1031 of the flat portion 103 is at least partially limited between the limiting cover 5 and the upper plate 301. Specifically, when the PCB board 1 is assembled and installed with the fixing frame 3, one end of the first limiting protrusion 1031 of the flat portion 103 close to the upper plate 301 abuts against the first outer surface 3013 of the upper plate 301. At this time, the other end of the first limiting protrusion 1031 close to the limiting cover 5 abuts against the limiting cover 5, so that the limiting cover 5 and the fixing frame 3 set on the fixing frame 3 by means of the mounting post 4 jointly limit the position of the first PCB board 1, thereby improving the stability of the first PCB board 1 after being installed on the fixing frame, and preventing the first PCB board 1 from detaching from the fixing frame 3. In addition, increasing the number of mounting posts 4 can also make the limit cover 5 more stably installed on the fixing frame 3. Moreover, if two or more mounting posts 4 are provided, the positions where the mounting posts 4 are provided can be consistent with or inconsistent with the corresponding lengths between one side of the limit cover 5. In another embodiment, taking the setting of two mounting posts 4 as an example, the two mounting posts 4 can be spaced apart at positions close to the two ends of the diagonally opposite corners of the limit cover 5, so that the limit cover 5 can be better and more stably installed on the fixing frame 3 by means of the mounting posts 4, so as to better realize the limit function of the first PCB board 1. Secondly, as a preferred embodiment, the limit cover 5 can be fixed on the mounting posts 4 by means of second bolts 501.

[0032] See also Figure 1 and Figure 2In this embodiment, the fixing device also includes a fixing foot 6, which extends from the lower plate 302 in a direction away from the upper plate 301 and the lower plate 302. The fixing foot 6 is connected to the fixing frame 3 and is installed and fixed on the second PCB board 2. The fixing foot 6 can be used to achieve installation between the fixing frame 3 and the second PCB board 2, so that the fixing frame 3 is stably installed and fixed on the second PCB board 2, so that the installation of the first PCB board 1 on the second PCB board 2 is more stable, and the first PCB board 1 is prevented from loosening and separating from the second PCB board 2. Next, the fixing foot 6 can be installed and fixed on the second PCB board 2 by the first bolt 601. During installation, a plastic gasket 202 needs to be pre-padded on the second PCB board 2, which can effectively prevent the first bolt 601 from damaging the structure of the second PCB board 2 when it is installed on the second PCB board 2. The fixing frame 3 can be implemented in whole or in part by a conductive material, and the fixing foot 6 is also implemented by a conductive material. The first PCB board 1 is in contact with the fixing frame 3, so that the grounding of the first PCB board 1 passes through the fixing frame 3 and is electrically connected to the grounding of the second PCB board 2 by the fixing foot 6 of the fixing frame 3, so that the fixing frame 3 can enhance the grounding of the first PCB board 1 and the second PCB board 2, thereby enhancing the effect of electrostatic protection.

[0033] In summary, the fixing device greatly simplifies the setting method of the connector when designing the PCBA board and the bridge board. The installation of multiple first PCB boards 1 on the second PCB board 2 can be achieved by using only the commonly used standard second connection interface 201 (for example: PCI E connector, IOM connector, etc.). There is no need to use connectors of different heights according to actual needs, which effectively solves the shortcomings of the background technology and reduces the overall production cost. Moreover, since the second connection interface 201 is a standard part, the production efficiency can be greatly improved.

[0034] According to the disclosure and teaching of the above description, the technical personnel in the field to which the utility model belongs can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes to the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. A fixing device for combining a plurality of first PCB boards and mounting them on a second PCB board, characterized in that: include: A fixing frame, comprising an upper plate and a lower plate symmetrical in upper and lower directions, the upper plate being provided with a plurality of upper openings, the lower plate being provided with lower openings at positions opposite to the upper openings, the lower openings being matched with the upper openings to mount and fix the first PCB board so that the first PCB board is limited on the fixing frame; A mounting column, mounted and fixed on the upper plate; and A limit cover is arranged on the first PCB board and is fixedly mounted on the mounting column.

2. The fixing device according to claim 1, characterized in that: When the limiting cover is installed and fixed on the mounting post, the limiting cover presses the first PCB board toward the upper board to limit the position of the first PCB board.

3. The fixing device according to claim 1, characterized in that: The cross-sectional length of the upper opening is the same as the cross-sectional length of the first PCB board.

4. The fixing device according to claim 1, characterized in that: The upper opening includes a symmetrically arranged limiting opening, a limiting area is arranged on the upper plate on one side of the limiting opening, and the limiting area is symmetrically arranged on the upper plate. When the first PCB board is installed to the upper opening, the limiting area is arranged against the first PCB board.

5. The fixing device according to claim 1, characterized in that: Two side walls are arranged between the upper plate and the lower plate, and the two side walls, the upper plate and the lower plate together surround and form an accommodating space, and an opening is arranged on both sides of the accommodating space.

6. The fixing device according to claim 5, characterized in that: The first PCB board includes a first connecting portion, a flat portion, a receiving portion and a second connecting portion which are sequentially connected from top to bottom. When the first PCB board is mounted on the second PCB board, the first connecting portion and the flat portion are both located above the upper opening, the receiving portion is located in the receiving space, and the second connecting portion is located below the lower opening.

7. The fixing device according to claim 6, characterized in that: A first limiting protrusion is disposed on one end of the flat portion close to the accommodating portion. When the first PCB board is mounted on the second PCB board, the first limiting protrusion is disposed against the upper board.

8. The fixing device according to claim 6, characterized in that: A second limiting protrusion is disposed on one end of the accommodating portion close to the second connecting portion. When the first PCB board is mounted on the second PCB board, the second limiting protrusion is disposed against the lower board.

9. The fixing device according to claim 1, characterized in that: The first PCB board is provided with a connector, and the second PCB board is provided with a second connection interface that cooperates with the connector. When the first PCB board passes through the upper board and the lower board from top to bottom in sequence, the connector is inserted into the second connection interface of the second PCB board.

10. The fixing device according to claim 1, characterized in that: The mounting column is arranged between two adjacent upper openings and at least two mounting columns are arranged.

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