Electronic module and electric connector assembly

Abstract

The invention discloses an electronic module and an electric connector assembly, the electronic module comprises a chip module, a second electric connector, a metal frame and a second circuit board, the chip module comprises a first circuit board, and the first electric connector is fixed on the upper surface of the first circuit board; the second electric connector is positioned below the chip module and is used for electrically connecting the first circuit board to a second circuit board; the metal frame is installed on the second circuit board and surrounds the periphery of the second electric connector, an extension part is connected to one side edge of the metal frame and tightly attached to the lower surface of the first circuit board, and the projection of the extension part and the projection of the first electric connector are partially overlapped in the vertical direction, so that the extension part serves as a back plate of the first circuit board; therefore, the effect of supporting the first circuit board upwards is achieved, and the first circuit board is prevented from being deformed due to downward pressure when the first electric connector is fixed on the upper surface of the first circuit board.

Description

Technical field

[0001] The present invention relates to an electronic module and an electric connector assembly, and in particular to an electronic module and an electric connector assembly capable of preventing a circuit board from being deformed. [Background Technology]

[0002] There is a common electronic module for realizing high-speed signal transmission function between chip modules, which includes a chip module and an electrical connector assembly. The chip module includes a chip and an adapter circuit board arranged under the chip. The electrical connector assembly includes a pressure cover, a first electrical connector, a second electrical connector, a metal frame and a main circuit board; the first electrical connector is installed on the upper surface of the adapter circuit board, and the pressure cover is used to press the chip module downward so that the adapter circuit board contacts the second electrical connector downward; the second electrical connector is installed on the upper surface of the main circuit board and is electrically connected to the lower surface of the adapter circuit board, thereby realizing electrical connection between the chip module and the main circuit board. The metal frame is fixed to the main circuit board and is arranged around the outer periphery of the second electrical connector, thereby increasing the strength of the main circuit board while facilitating the fixing of the pressure cover to the metal frame through the fastener when the pressure cover is pressed downward.

[0003] The above structure has the following problem: when the first electrical connector is mounted on the upper surface of the adapter circuit board, the first terminal in the first electrical connector contacts the adapter circuit board downward, and the adapter circuit board is easily deformed and damaged.

[0004] Therefore, it is necessary to design a new electronic module and electrical connector assembly to solve the above technical problems. [Summary of the invention]

[0005] In response to the problems faced by the background technology, the purpose of the present invention is to provide an electronic module and an electrical connector assembly in which an extension portion is tightly attached to the lower surface of a first circuit board, and the projection of the extension portion and the projection of the first electrical connector partially overlap in the up and down directions, thereby preventing deformation of the first circuit board.

[0006] In order to achieve the above-mentioned objectives, the present invention adopts the following technical means: an electronic module, characterized in that it includes: a chip module including a first circuit board, a first electrical connector fixed to the upper surface of the first circuit board; a second electrical connector is located below the chip module, and the second electrical connector electrically connects the first circuit board to a second circuit board; a metal frame is installed on the second circuit board and surrounded by the outer periphery of the second electrical connector, an extension portion is connected to one side of the metal frame, and the extension portion is tightly attached to the lower surface of the first circuit board, and along the up and down directions, the projection of the extension portion and the projection of the first electrical connector at least partially overlap.

[0007] Furthermore, at least one supporting portion is connected to the extension portion, and the supporting portion is located above and / or below the extension portion, and along the up and down direction, the sum of the heights of the extension portion and the supporting portion is a first height; the second electrical connector includes a main body portion and a plurality of second terminals housed in the main body portion, the first circuit board is arranged above the main body portion and is electrically connected to the second circuit board through the second terminals; along the up and down direction, the height of the main body portion is a second height, and the first height is equal to the second height.

[0008] Furthermore, the metal frame also includes a bottom frame, which is tightly attached to the upper surface of the second circuit board and is arranged around the outer periphery of the second electrical connector; the bottom frame includes a first side and two second sides arranged opposite to each other on the left and right, and the first side is connected to the two second sides; the extension portion is connected to the first side and is bent upward from the first side to form two first bending portions, and the two first bending portions are respectively located on the left and right sides of the extension portion.

[0009] Furthermore, the extension portion and the second side are respectively located on the front and rear sides of the first side, the two first bending portions are both connected to the front side of the first side, and along the left and right directions, the projection of the first bending portion and the projection of the extension portion at least partially overlap.

[0010] Furthermore, the first side also includes two connecting portions located on the left and right sides of the extension portion, the two connecting portions are respectively located on the rear sides of the two first bending portions, and the two connecting portions are respectively connected to the two second side portions; the two second bending portions are respectively bent upward from the two second side portions, the second bending portions extend along the front-to-back direction, and the connecting portion and the second bending portion are staggered along the front-to-back direction; the two metal parts are respectively fixed to the upper surfaces of the two second side portions, and the metal parts are at least partially fixed to the connecting portions.

[0011] Furthermore, a metal plate is fixed to the lower surface of the second circuit board. Along the vertical direction, the projection of the second electrical connector is located within the projection area of the metal plate, and the projection of the metal plate and the projection of the extension at least partially overlap.

[0012] Furthermore, the first electrical connector includes a plurality of first terminals, each first terminal includes a first contact portion and a first wiring portion, the first contact portion is used to contact the first circuit board, the first wiring portion is used to connect the first cable, and the first cable extends out of the first electrical connector in the front-to-back direction; a plug-in portion is extended from the edge of the first circuit board, and the plug-in portion is located on the front side of the first electrical connector; a third electrical connector has a slot, the plug-in portion is plugged into the slot and is electrically connected to the third electrical connector, and the third electrical connector is located below the first cable.

[0013] Furthermore, a pressure cover is arranged above the chip module. Along the front-to-back direction, the first electrical connector and the pressure cover are staggered, and the third electrical connector and the pressure cover are also staggered.

[0014] An electrical connector assembly is used to electrically connect to a chip module, the chip module includes a first circuit board, the first circuit board includes a first conductive area and a second conductive area, the first conductive area and the second conductive area are respectively located on the upper surface and the lower surface of the first circuit board, a first electrical connector is installed on the first conductive area to electrically connect to the first circuit board, characterized in that: a second connector is located below the chip module, and the second electrical connector electrically connects the second conductive area to a second circuit board; a metal frame is installed on the second circuit board, and the metal frame has a hollow area that passes through the metal frame in the up and down direction, the second electrical connector is located in the hollow area, and extends from the side of the metal frame to form an extension portion, and the extension portion is clamped between the first conductive area and the second circuit board in the up and down direction.

[0015] Furthermore, at least one supporting portion is connected to the extension portion, and the supporting portion is located above and / or below the extension portion, and along the up and down direction, the sum of the heights of the extension portion and the supporting portion is a first height; the second electrical connector includes a main body portion and a plurality of second terminals housed in the main body portion, the first circuit board is arranged above the main body portion and is electrically connected to the second circuit board through the second terminals; along the up and down direction, the height of the main body portion is a second height, and the first height is equal to the second height.

[0016] Furthermore, the metal frame also includes a bottom frame, which is tightly attached to the upper surface of the second circuit board and is arranged around the outer periphery of the second electrical connector; the bottom frame includes a first side and two second sides arranged opposite to each other on the left and right, and the first side is connected to the two second sides; the extension portion is connected to the first side and is bent upward from the first side to form two first bending portions, and the two first bending portions are respectively located on the left and right sides of the extension portion.

[0017] Furthermore, the extension portion and the second side are respectively located on the front and rear sides of the first side, the two first bending portions are both connected to the front side of the first side, and along the left and right directions, the projection of the first bending portion and the projection of the extension portion at least partially overlap.

[0018] Furthermore, the first side also includes two connecting portions located on the left and right sides of the extension portion, the two connecting portions are respectively located on the rear sides of the two first bending portions, and the two connecting portions are respectively connected to the two second side portions; the two second bending portions are respectively bent upward from the two second side portions, the second bending portions extend along the front-to-back direction, and the connecting portion and the second bending portion are staggered along the front-to-back direction; the two metal parts are respectively fixed to the upper surfaces of the two second side portions, and the metal parts are at least partially fixed to the connecting portions.

[0019] Furthermore, a metal plate is fixed to the lower surface of the second circuit board. Along the vertical direction, the projection of the second electrical connector is located within the projection area of the metal plate, and the projection of the metal plate and the projection of the extension at least partially overlap.

[0020] Compared with the prior art, the present invention has the following beneficial effects: by setting the first electrical connector to be fixed on the upper surface of the first circuit board, the extension portion is tightly attached to the lower surface of the first circuit board, and along the up and down directions, the projection of the extension portion and the projection of the first electrical connector partially overlap, so that the extension portion connected to the side of the metal frame acts as the back plate of the first circuit board, supporting the first circuit board upward, thereby avoiding the first circuit board being subjected to downward pressure and thus deformed when the first electrical connector is fixed to the upper surface of the first circuit board.

Brief Description of the Drawings

[0021] Figure 1 is an exploded perspective view of a first embodiment of the present invention;

[0022] Figure 2 for Figure 1 A perspective schematic diagram of the first embodiment of the present invention after assembly;

[0023] Figure 3 for Figure 2 A cross-sectional view of the first embodiment of the present invention after assembly;

[0024] Figure 4 This is a perspective exploded view of the metal frame and metal parts in the first embodiment of the present invention;

[0025] Figure 5 for Figure 4 A three-dimensional schematic diagram of the metal frame and metal parts after assembly;

[0026] Figure 6 for Figure 5 Partial side view of the middle metal frame;

[0027] Figure 7 is a perspective schematic diagram of a second embodiment of the present invention;

[0028] Figure 8 is a three-dimensional schematic diagram of the first electrical connector and the third electrical connector after being separated from the first circuit board in the present invention;

[0029] Figure 9 for Figure 8 A three-dimensional schematic diagram of the first electrical connector and the third electrical connector assembled with the first circuit board;

[0030] Figure 10 for Figure 9 A cross-sectional view of the assembled second embodiment of the present invention;

[0031] Figure 11 is an exploded perspective view of a metal frame and metal parts in a second embodiment of the present invention;

[0032] Figure 12 for Figure 11A three-dimensional schematic diagram of the metal frame and metal parts after assembly.

[0033] Description of the accompanying drawings for the specific embodiments:

[0034] Chip module 1 Chip 11 First circuit board 12 First conductive area 121 Second conductive area 122 Connecting portion 123 First electrical connector 2 First terminal 21 First contact portion 211 First connecting portion 212 First cable S1 Gland C Second electrical connector 3 Main body 31 First height H1 Second terminal 32 The second circuit board P Metal frame 4 Hollow area 41 Bottom frame 42 First side 421 Connecting portion 421a Second side 422 Extension 43 Support part D The second height H2 First bent portion 44 Second bent portion 45 Metal parts 5 Metal Plate 6 The third electrical connector 7 Slot 71 Second cable S2 [Specific implementation method]

[0035] To facilitate a better understanding of the purpose, structure and features of the present invention, the present invention will be further described with reference to the accompanying drawings and specific embodiments.

[0036] To facilitate a better understanding of the technical solution of the present invention, the X-axis in the three-dimensional coordinate axes in the drawings of the specification is defined as the left-right direction, with the positive direction of the X-axis being right, the Y-axis is defined as the front-back direction, with the positive direction of the Y-axis being front, and the Z-axis is defined as the up-down direction, with the positive direction of the Z-axis being up.

[0037] See also Figure 1 The electronic module of the present invention includes a chip module 1 and an electrical connector assembly electrically connected to the chip module 1. The chip module 1 includes a chip 11 and a first circuit board 12 disposed below the chip 11. The electrical connector assembly includes a first electrical connector 2, a second electrical connector 3, and a second circuit board P.

[0038] See also Figures 1 to 6 , which is the first embodiment of the electronic module of the present invention. The first circuit board 12 includes a first conductive area 121 and a second conductive area 122, and the first conductive area 121 and the second conductive area 122 are respectively located on the upper surface and the lower surface of the first circuit board 12. Along the left-right direction, the first conductive area 121 and the chip 11 are staggered, and the first electrical connector 2 is installed on the first conductive area 121. The first electrical connector 2 includes a plurality of first terminals 21 and a plurality of first cables S1, each first terminal 21 has a first contact portion 211 and a first wiring portion 212, the first terminal 21 extends downward from the first electrical connector 2 and electrically contacts the first conductive area 121, and the first wiring portion 212 is used to electrically connect the first cable S1. A pressure cover C is provided above the chip module 1, and along the front-back direction, the pressure cover C and the first electrical connector 2 are staggered.

[0039] The second electrical connector 3 is mounted on the upper surface of the second circuit board P and is located below the first circuit board 12. The second electrical connector 3 includes a main body 31 and a plurality of second terminals 32 received in the main body 31. Along the vertical direction, one end of each second terminal 32 electrically contacts the second conductive area 122 and the other end electrically contacts the second circuit board P, thereby electrically connecting the first circuit board 12 to the second circuit board P. Along the vertical direction, the main body 31 has a first height H1.

[0040] A metal frame 4 is mounted on the upper surface of the second circuit board P. The metal frame 4 has a hollow area 41 and a bottom frame 42 surrounding the outer periphery of the hollow area 41. The bottom frame 42 is in close contact with the upper surface of the second circuit board P, and the second electrical connector 3 is located within the hollow area 41. The bottom frame 42 includes a first side 421 and two opposing second sides 422. The first side 421 is located in front of the second electrical connector 3 and connects the two second sides 422 in the left-right direction. An extension 43 extends horizontally from the first side 421 toward the first electrical connector 2 in the front-to-back direction. The extension 43 and the second side 422 are located in front of and behind the first side 421, respectively, to facilitate blanking of the metal frame 4 and the subsequent installation of the first and second electrical connectors 2 and 3. The extension 43 is in close contact with the lower surface of the first circuit board 12, and the projection of the extension 43 and the first electrical connector 2 partially overlap in the vertical direction. The electrical connector assembly also includes a support portion D. In this embodiment, support portion D is stamped separately from a metal plate 6. Support portion D is secured to the upper surface of extension portion 43. In the vertical direction, the sum of the heights of support portion D and extension portion 43 is a second height H2, with first height H1 being equal to second height H2. In other embodiments, support portion D may alternatively be secured to the lower surface of extension portion 43.

[0041] Two first bent portions 44 are formed by bending upward and extending from the first side 421. Both first bent portions 44 are connected to the front side of the first side 421. The two first bent portions 44 are located on the left and right sides of the extension 43, respectively. The projections of the first bent portions 44 and the projections of the extension 43 partially overlap in the left-right direction, further enhancing the strength of the extension 43. The first side 421 also has two connecting portions 421a, located on the left and right sides of the extension 43. The front sides of the connecting portions 421a are connected to the first bent portion 44, and the rear sides of the connecting portions 421a are connected to the second side 422. The metal frame 4 also includes two second bent portions 45, which are formed by bending upward and extending from the second side 422. The second bent portions 45 extend in the front-to-back direction and are staggered with the connecting portions 421a in the front-to-back direction. The electrical connector assembly further includes two metal members 5 , which are respectively mounted on the upper surfaces of the two second side edges 422 , and portions of the metal members 5 are fixed to the connecting portion 421 a .

[0042] A metal plate 6 is mounted on the lower surface of the second circuit board P. In the vertical direction, the projection of the second electrical connector 3 is within the projection range of the metal plate 6 , and the projection of the extension 43 partially overlaps with the projection of the metal plate 6 .

[0043] like Figures 7 to 12FIG. 2 shows a second embodiment of the electronic module of the present invention. This differs from the first embodiment in that a plug-in portion 123 extends from the edge of the first circuit board 12 and is located in front of the first electrical connector 2. The electrical connector assembly also includes a third electrical connector 7, which is electrically connected to the second cable S2. The third electrical connector 7 also includes a slot 71, into which the plug-in portion 123 is inserted and electrically connected to the third electrical connector 7. The third electrical connector 7 is located below the first cable S1. The gland C and the third electrical connector 7 are also staggered in the front-to-back direction.

[0044] A support portion D protrudes downward from the lower surface of the extension portion 43. Along the vertical direction, the sum of the heights of the extension portion 43 and the support portion D is a second height H2, and the first height H1 is equal to the second height H2. In other embodiments, the support portion D may also protrude upward from the upper surface of the extension portion 43.

[0045] In summary, the electrical connector of the present invention has the following beneficial effects:

[0046] 1. By arranging the first electrical connector 2 to be fixed to the upper surface of the first circuit board 12, the extension portion 43 is closely attached to the lower surface of the first circuit board 12, and the projection of the extension portion 43 and the projection of the first electrical connector 2 partially overlap in the vertical direction, so that the extension portion 43 connected to the side of the metal frame 4 acts as the back plate of the first circuit board 12, supporting the first circuit board 12 upward, thereby preventing the first circuit board 12 from being subjected to downward pressure and thus deforming when the first electrical connector 2 is fixed to the upper surface of the first circuit board 12.

[0047] 2. By setting the main body 31 to have a first height H1, the sum of the heights of the support portion D and the extension portion 43 to be a second height H2, and the first height H1 being equal to the second height H2, it is avoided that when the first circuit board 12 is fixed to the second electrical connector 3 and the extension portion 43 respectively, the height of the main body 31 and the height of the extension portion 43 are not equal in the vertical direction, thereby preventing a gap from existing between the first circuit board 12 and the extension portion 43 or the second electrical connector 3, making it impossible for the first circuit board 12 to be arranged straight in the vertical direction, causing the first circuit board 12 to be easily deformed and damaged.

[0048] 3. Compared with the flat plate shape, by providing the first bent portion 44 that bends upward, the overall strength of the first side 421 can be increased, so that the first side 421 of the metal frame 4 is not easily deformed in the front-to-back direction and the left-to-right direction; at the same time, by providing the extension portion 43 and the two first bent portions 44, both of which are connected to the first side 421 of the metal frame 4, and the two first bent portions 44 are respectively located on the left and right sides of the extension portion 43, the first bent portion 44 indirectly enhances the strength of the extension portion 43, so that the extension portion 43 is not easily deformed in the front-to-back direction and the left-to-right direction, thereby avoiding the situation where the strength of the extension portion 43 is insufficient to support the first circuit board 12 when the first electrical connector 2 is installed downward to the first circuit board 12, thereby causing the first circuit board 12 to deform.

[0049] 4. By providing two second bending portions 45 that are bent upward from the two second side edges 422, the strength of the second side edges 422 is increased. At the same time, by providing two connecting portions 421a that are respectively located on the rear sides of the two first bending portions 44, the connecting portions 421a and the second bending portions 45 are staggered in the front-to-back direction to avoid the first bending portions 44 and the second bending portions 45 being connected or too close to each other, which increases the difficulty of manufacturing the metal frame 4. At the same time, with the help of the metal member 5 that is at least partially fixed to the connecting portion 421a, the strength of the two connecting portions 421a located on the left and right sides of the extension portion 43 is further increased, thereby indirectly enhancing the strength of the extension portion 43.

[0050] 5. By arranging the projection of the second electrical connector 3 in the vertical direction to be within the projection area of the metal plate 6, the metal plate 6 supports the second circuit board P upward, thereby preventing the second circuit board P from being deformed and damaged due to excessive force after the second electrical connector 3 is installed on the second circuit board P. At the same time, by arranging the projection of the metal plate 6 and the projection of the extension 43 to partially overlap in the vertical direction, the metal plate 6 indirectly supports the extension 43 and the first circuit board 12 above the extension 43 while supporting the second circuit board P, thereby preventing the extension 43 and the first circuit board 12 above the extension 43 from being deformed due to the small area and insufficient strength of the extension 43.

[0051] 6. In order to transmit more high-speed signals, a common technical approach is to increase the height of the cable connector so that the same cable connector can simultaneously connect to multiple rows of cables arranged in the vertical direction. Compared with the above approach, the present solution provides a plug-in portion 123 that is plugged into the slot 71 and electrically connected to the third electrical connector 7, and the third electrical connector 7 is located below the first cable S1. Therefore, while ensuring that the height of the cable connector installed on the first circuit board 12 in the vertical direction is constant, more cable connectors can be added for signal transmission, thereby increasing more high-speed signal transmission channels within the same height space.

[0052] 7. By arranging the first electrical connector 2 and the third electrical connector 7 to be staggered with the pressure cover C along the front-to-back direction, it is convenient to install the first electrical connector 2 and the third electrical connector 7 without moving the pressure cover C and the chip module 1 during subsequent installation and use, and it is convenient to replace damaged parts in the first electrical connector 2 and the third electrical connector 7.

Claims

1. An electronic module, characterized in that: include: A chip module includes a first circuit board, a first electrical connector fixed to the upper surface of the first circuit board; A second electrical connector is located below the chip module, and the second electrical connector electrically connects the first circuit board to a second circuit board; A metal frame is mounted on the second circuit board and surrounds the outer periphery of the second electrical connector. An extension portion is connected to a side edge of the metal frame, and the extension portion is tightly attached to the lower surface of the first circuit board. Along the up and down directions, the projection of the extension portion and the projection of the first electrical connector at least partially overlap.

2. The electronic module according to claim 1, wherein: include: At least one supporting portion is connected to the extension portion, and the supporting portion is located above and / or below the extension portion. In the up-down direction, the sum of the heights of the extension portion and the supporting portion is a first height. The second electrical connector includes a main body and a plurality of second terminals housed in the main body. The first circuit board is arranged above the main body and is electrically connected to the second circuit board through the second terminals. In the up-down direction, the height of the main body is a second height, and the first height is equal to the second height.

3. The electronic module according to claim 1, wherein: include: The metal frame also includes a bottom frame, which is tightly attached to the upper surface of the second circuit board and is arranged around the outer periphery of the second electrical connector; the bottom frame includes a first side and two second sides arranged opposite to each other on the left and right, and the first side is connected to the two second sides; the extension portion is connected to the first side and bends upward from the first side to form two first bending portions, and the two first bending portions are respectively located on the left and right sides of the extension portion.

4. The electronic module according to claim 3, wherein: include: The extension portion and the second side are respectively located at the front and rear sides of the first side, the two first bent portions are both connected to the front side of the first side, and along the left and right directions, the projections of the first bent portions and the extension portions at least partially overlap.

5. The electronic module according to claim 3, wherein: include: The first side also includes two connecting portions located on the left and right sides of the extension portion, the two connecting portions are respectively located on the rear sides of the two first bending portions, and the two connecting portions are respectively connected to the two second side edges; the two second bending portions are respectively bent upward from the two second side edges, the second bending portions extend along the front-to-back direction, and the connecting portion and the second bending portion are staggered along the front-to-back direction; two metal parts are respectively fixed to the upper surfaces of the two second side edges, and the metal parts are at least partially fixed to the connecting portions.

6. The electronic module according to claim 1, wherein: include: A metal plate is fixed to the lower surface of the second circuit board. Along the up-down direction, the projection of the second electrical connector is located within the projection area of the metal plate, and the projection of the metal plate and the projection of the extension at least partially overlap.

7. The electronic module according to claim 1, wherein: include: The first electrical connector includes a plurality of first terminals, each of which includes a first contact portion and a first wiring portion, the first contact portion being used to contact the first circuit board, the first wiring portion being used to connect the first cable, and the first cable extending out of the first electrical connector in the front-to-back direction; a plug-in portion extending from the edge of the first circuit board is located on the front side of the first electrical connector; a third electrical connector has a slot, the plug-in portion is plugged into the slot and is electrically connected to the third electrical connector, and the third electrical connector is located below the first cable.

8. The electronic module according to claim 7, wherein: include: A pressure cover is arranged above the chip module. Along the front-back direction, the first electrical connector and the pressure cover are staggered, and the third electrical connector and the pressure cover are also staggered.

9. An electrical connector assembly for electrically connecting to a chip module, the chip module comprising a first circuit board, the first circuit board comprising a first conductive area and a second conductive area, the first conductive area and the second conductive area being located on the upper and lower surfaces of the first circuit board, respectively, and a first electrical connector mounted on the first conductive area to electrically connect to the first circuit board, characterized in that: A second connector is located below the chip module, and the second electrical connector electrically connects the second conductive area to a second circuit board; a metal frame is installed on the second circuit board, and the metal frame has a hollow area that passes through the metal frame in the up-down direction. The second electrical connector is located in the hollow area and extends from the side of the metal frame to form an extension portion. The extension portion is clamped between the first conductive area and the second circuit board in the up-down direction.

10. The electrical connector assembly according to claim 9, wherein: include: At least one supporting portion is connected to the extension portion, and the supporting portion is located above and / or below the extension portion. In the up-down direction, the sum of the heights of the extension portion and the supporting portion is a first height. The second electrical connector includes a main body and a plurality of second terminals housed in the main body. The first circuit board is arranged above the main body and is electrically connected to the second circuit board through the second terminals. In the up-down direction, the height of the main body is a second height, and the first height is equal to the second height.

11. The electrical connector assembly according to claim 9, wherein: include: The metal frame also includes a bottom frame, which is tightly attached to the upper surface of the second circuit board and is arranged around the outer periphery of the second electrical connector; the bottom frame includes a first side and two second sides arranged opposite to each other on the left and right, and the first side is connected to the two second sides; the extension portion is connected to the first side and bends upward from the first side to form two first bending portions, and the two first bending portions are respectively located on the left and right sides of the extension portion.

12. The electrical connector assembly according to claim 11, wherein: include: The extension portion and the second side are respectively located at the front and rear sides of the first side, the two first bent portions are both connected to the front side of the first side, and along the left and right directions, the projections of the first bent portions and the extension portions at least partially overlap.

13. The electrical connector assembly according to claim 11, wherein: include: The first side also includes two connecting portions located on the left and right sides of the extension portion, the two connecting portions are respectively located on the rear sides of the two first bending portions, and the two connecting portions are respectively connected to the two second side edges; the two second bending portions are respectively bent upward from the two second side edges, the second bending portions extend along the front-to-back direction, and the connecting portion and the second bending portion are staggered along the front-to-back direction; two metal parts are respectively fixed to the upper surfaces of the two second side edges, and the metal parts are at least partially fixed to the connecting portions.

14. The electrical connector assembly according to claim 9, wherein: include: A metal plate is fixed to the lower surface of the second circuit board. Along the up-down direction, the projection of the second electrical connector is located within the projection area of the metal plate, and the projection of the metal plate and the projection of the extension at least partially overlap.

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