CN213484049U

CN213484049U - Electrical connector

Info

Publication number: CN213484049U
Application number: CN202022418086.3U
Authority: CN
Inventors: 郑善雍; 杨智凯
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Hongteng Precision Technology Co Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Hongteng Precision Technology Co Ltd; Foxconn Interconnect Technology Ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-06-18
Anticipated expiration: 2030-10-27

Abstract

An electric connector is used for electrically connecting a chip module to a circuit board and comprises a base body arranged on the upper surface of the circuit board, a back plate arranged on the lower surface of the circuit board and a first locking piece for locking the base body, the circuit board and the back plate together; the center of the back plate in a natural state is arched upwards to form an arched part so as to be pre-pressed on the circuit board upwards when being locked with the circuit board. The utility model discloses in, when the shaping backplate, set up the backplate into arch shape, after the backplate equipment is accomplished, can improve the contact degree of chip module and conductive terminal to improve signal transmission's performance.

Description

Electrical connector

[ technical field ] A method for producing a semiconductor device

The utility model relates to an electric connector especially relates to an electric connector that electric connection performance is better.

[ background of the invention ]

Related prior art referring to U.S. patent No. US7817429B2, a circuit board assembly is disclosed, which includes a board body mounted with a heat radiating plate and a time controller using a spring clip or a hook spring, which prevents the board body from sagging. However, the spring clip or hook spring has spring arms, which occupy too much space and are less stressed by the spring arms after assembly. For large servers, the spring arms are far from supporting, which may cause poor contact between the chip module and the conductive terminals in the electrical connector.

Therefore, there is a need to provide a new electrical connector to solve the above problems.

[ Utility model ] content

An object of the present invention is to provide an electrical connector with better electrical connection performance.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an electric connector is used for electrically connecting a chip module to a circuit board and comprises a base body arranged on the upper surface of the circuit board, a back plate arranged on the lower surface of the circuit board and a first locking piece for locking the base body, the circuit board and the back plate together; the center of the back plate in a natural state is arched upwards to form an arched part so as to be pre-pressed on the circuit board upwards when being locked with the circuit board.

Furthermore, after the back plate is locked on the circuit board, the back plate is flat and attached to the lower surface of the circuit board.

Furthermore, the backboard comprises a frame body and a frame opening formed by enclosing the frame body, the frame body comprises an outer edge far away from the frame opening and an inner edge adjacent to the frame opening, and the frame body is downwards inclined from the inner edge to the outer edge to form a shape similar to an umbrella.

Furthermore, the frame body comprises a pair of first frames which are arranged oppositely and a pair of second frames which are connected with the two first frames, and the pair of first frames and the pair of second frames surround to form the frame opening; the back plate is further provided with a reinforcing rib for connecting the two first frames, the reinforcing rib is located in the frame, and the reinforcing rib is formed into an arc-shaped part.

Furthermore, the intersection point of the two diagonal lines of the back plate is located at the center of the reinforcing rib, and the center of the reinforcing rib is the highest point of the upward arching of the back plate along the vertical direction.

Further, the upward arching magnitude of the back plate in the vertical direction in the natural state is more than 0.3 mm.

Further, the thickness of the back plate in the vertical direction is 2.5 mm.

Furthermore, the base comprises an insulating body and a fixed base surrounding the insulating body, and the first locking piece penetrates through the fixed base, the circuit board and the back plate and locks the fixed base, the circuit board and the back plate together.

Furthermore, the electric connector further comprises a clamping plate for clamping the chip module and a cover plate for covering the chip module, wherein the fixing seat is provided with a first side edge and a second side edge which are opposite, and the cover plate is pivoted to the first side edge of the fixing seat and used for pressing the chip module.

Furthermore, the both sides of grip block are equipped with the groove of stepping down, electric connector still includes first second closure, first, second closure from the top down pass the groove of stepping down, fixing base, circuit board and backplate of apron, grip block and lock attach together.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses a set up the shaping with the backplate in advance for the arch, after backplate equipment is accomplished, can improve chip module and conductive terminal's contact degree to improve signal transmission's performance.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of the electrical connector of the present invention.

Fig. 2 is a perspective view of fig. 1 from another angle.

Fig. 3 is a side view of the electrical connector of the present invention.

Fig. 4 is an exploded perspective view of the electrical connector of the present invention.

Fig. 5 is a further exploded perspective view of fig. 4.

Fig. 6 is an enlarged view of the circled portion in fig. 5.

Fig. 7 is a partially exploded perspective view of the electrical connector of the present invention.

Fig. 8 is an exploded perspective view from another angle of fig. 5.

Fig. 9 is a schematic perspective view of the back plate in the electrical connector of the present invention in a natural state.

Fig. 10 is a sectional view taken along a broken line a-a in fig. 9.

Fig. 11 is a sectional view taken along a broken line B-B in fig. 1.

Fig. 12 is a cross-sectional view taken along the dashed line C-C in fig. 1.

[ description of element symbols ]

Electric connector 100 insulation body 1

First side 21 of the fixed seat 2

Second side 22 and third side 23

Pivoting mechanism 24 cover plate 3

First stitching side 31 and second stitching side 32

Third press-fit edge 33 first through hole 34

Second through hole 35 and third through hole 36

The press-fit portion 37 holds the board 4

Back plate 5 with abdicating groove 41

First frame 511 of frame 51

Second frame 512 frame mouth 52

Outer edge 54 of reinforcement rib 53

Inner edge 55 screw hole 56

First screw hole 561 second screw hole 562

First locking element 6 nut 61

Screw 62 collar 63

Second locking element 7 and third locking element 8

Chip module 200 circuit board 300

Upper surface 301 and lower surface 302

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

[ detailed description ] embodiments

For better understanding of the objects, structures, features, and functions of the present invention, reference should now be made to the drawings and detailed description of the invention. The utility model discloses in, do not do specifically to the first, the second in the present case and restrict, do not do the precedence order and restrict.

Referring to fig. 1 to 12, an electrical connector 100 is used for electrically connecting a chip module 200 to a circuit board 300, and the electrical connector 100 includes an insulating body 1 mounted on an upper surface 301 of the circuit board 300, a fixing base 2 surrounding the insulating body 1, a cover plate 3 and a clamping plate 4 respectively pivoted to two ends of the fixing base 2, a back plate 5 mounted on a lower surface 302 of the circuit board 300, and a plurality of first locking elements 6, a plurality of second locking elements 7, and a plurality of third locking elements 8 for the electrical connector 100 and the circuit board 300. The insulating body 1 and the fixing base 2 are collectively referred to as a base. A plurality of conductive terminals (not shown) are carried in the insulating body 1. The first locking member 6 passes through the fixing base 2, the circuit board 300 and the back plate 5 and locks them together. The second locking element 7 fixes the cover plate 3, the clamping plate 4, the fixing base 2, the circuit board 300 and the back plate 5 to each other. A number of said third locking elements 8 fix said cover plate 3 and holder 2 to each other.

Referring to fig. 4 and 5, the fixing base 2 is provided with a first side 21, a second side 22 and two third sides 23 connecting the first side and the second side. The first side 21 and the second side 22 of the fixing base 2 are respectively provided with a pivoting mechanism 24, one end of the cover plate 3 is pivoted to the pivoting mechanism 24 of the first side 21, and one end of the clamping plate 4 is pivoted to the pivoting mechanism 24 of the second side 22.

The cover plate 3 covers the chip module 200 and is pivotally connected to the first side 21 of the fixing base 2 to press the chip module 200. The cover plate 3 includes a first pressing edge 31, a second pressing edge 32 and two third pressing edges 33 corresponding to the first and

second sides

21, 22 and the two third sides 23 of the fixing base 2, and the first, second and third pressing edges are collectively referred to as pressing edges. The first and second stitching edges 31, 32 are arranged oppositely, and the two third stitching edges 33 connect the first and second stitching edges 31, 32. The first and second press-fitting

edges

31 and 32 are respectively provided with a plurality of first through holes 34 and a plurality of second through holes 35 which penetrate through the first and second press-fitting edges from top to bottom, and the first through holes 34 are used for avoiding and corresponding to the first locking parts 6. The second through hole 35 is used to pass the third locking element 8. A third through hole 36 is respectively arranged in the middle of the third pressing edge 33, so that the second locking element 7 can pass through. The first and second

pressing edges

31 and 32 are respectively provided with two pressing portions 37 oppositely, and the pressing portions 37 disposed on the same first side edge 21 or second side edge 22 are disposed at intervals. Each of the press-fit portions 37 has one of the first through holes 34 and one of the second through holes 35, and the first through holes 34 and the second through holes 35 located in the same press-fit portion 37 are adjacent to each other and are not communicated with each other.

The clamping plate 4 is frame-shaped and pivotally connected to the second side 22 of the fixing base 2 for clamping the chip module 200. The two sides of the clamping plate 4 corresponding to the two third sides 23 of the fixing seat 2 are respectively provided with a yielding groove 41, and the yielding groove 41 is used for the second locking piece 7 to pass through.

Referring to fig. 7 to 9, the back plate 5 includes a frame body 51, a frame opening 52 surrounded by the frame body 51, and a reinforcing rib 53 located in the frame body 51. The frame body 51 comprises an outer edge 54 far away from the frame opening 52 and an inner edge 55 adjacent to the frame opening 52, and the frame body 51 is inclined downwards from the inner edge 55 to the outer edge 54 to form a shape similar to an umbrella. The thickness of the back plate 5 in the vertical direction is 2.5 mm, so that the back plate can be conveniently applied to the inside of a 1U server case space. The back plate 5 is provided with a plurality of screw holes 56, the screw holes 56 comprise a first screw hole 561 and a second screw hole 562 which are respectively matched with the first locking part 6 and the second locking part 7, and the first screw hole 561 is positioned at four corners of the back plate 5.

The frame body 51 includes a pair of first frames 511 disposed opposite to each other and a pair of second frames 512 connecting the two first frames 511, and the pair of first frames 511 and the pair of second frames 512 surround the frame opening 52. The reinforcing rib 53 connects the two first frames 511, the reinforcing rib 53 is formed into an arc-shaped portion, the frame opening 52 is divided into two parts by the reinforcing rib 53, and the reinforcing rib 53 can also be configured to connect the two second frames 512. The intersection point C of the two diagonal lines of the back plate 5 is located at the center of the reinforcing rib 53, and the point C of the center of the reinforcing rib 53 is the highest point of the upward arching of the back plate 5 along the vertical direction. The second screw hole 562 is located in the first frame 511 of the back plate, and the second screw hole 562 is not in the same straight line with the two first screws 561 located in the same first frame 511, and the second screw hole 562 is closer to the outer side of the first frame 511.

The back plate 5 is arched upward at its center in a natural state to form an arch part, so as to be pre-pressed upward against the circuit board 300 when being locked to the circuit board 300. The vertical upward arching value h of the back plate 5 in the natural state is greater than 0.3 mm, please refer to fig. 10. When the back plate 5 is locked to the circuit board 300, the back plate 5 is flat and attached to the lower surface 302 of the circuit board.

In the prior art, after the chip module 200 is packaged, the chip module 200 may have a central portion that is warped upward, and the center of the insulating body 1 carrying the conductive terminals is bent downward to deform, so that when the cover 3 is locked to the fixing base 3 and the back plate 5, the conductive terminals in the center are in poor contact with the chip module 200, which causes a problem in signal transmission. The utility model discloses in, when preparation backplate 5, in advance will backplate 5 is prepared into and is become the shape of encircleing, is installing during backplate 5, the arch portion of backplate 5 at first with the contact of circuit board 300 is right in advance the central point of circuit board 300 forms the holding power, through first,

second locking piece

6, 7 will backplate 5 with circuit board 300 lock attaches the back, the arch portion of backplate 5 upwards provides the holding power, makes the central point of circuit board 300 is the volume of buckling downwards diminishes to improved conductive terminal with chip module 200's contact.

After the back plate 5 is locked with other components, the back plate 5 is straightened to form a flat plate due to the locking force of the first locking element 6, the first locking element 6 and the second locking element 7 are locked with the upper arched back plate 5, and the pressing force of the cover plate 3 on the chip module 200 reduces the bending deformation of the chip module 200 after being locked, so that the contact area between the central conductive terminal and the chip module 200 can be increased, and the signal transmission performance is improved.

Of course, in other embodiments, the back plate 5 may be formed in an upper arch shape in addition to the locking force between the back plate 5 and the circuit board 300, and the state of the back plate 5 after locking is not limited herein.

Referring to fig. 11, the first locking element 6 includes a nut 61, a screw 62 and a collar 63 that are matched with each other and are sleeved on the periphery of the end of the nut 61 located below the cover plate 3, and the diameter of the first through hole 34 is larger than that of the nut 61. To facilitate the operator to further rotate the nut 61 through the first through hole 34 to tighten the first locking member 6 to hold the chip module 200 in the electrical connector 100.

The second locking element 7 passes through the third through hole 36 of the cover plate 5 from top to bottom, and fixes the cover plate 3, the abdicating groove 41 of the clamping plate 4, the fixing seat 2, the circuit board 300 and the back plate 5 together.

A plurality of the third locking elements 8 pass through the second through holes of the cover plate to fix the cover plate 3 and the fixed seat 2 to each other.

Please refer to fig. 1, 4 to 7, wherein the first locking elements 6 and the third locking elements 8 are disposed adjacent to each other in a one-to-one correspondence, and a plurality of the first and

third locking elements

6, 8 are disposed on the first side 21 and the second side 22 of the fixing base 2. The first side 21 or the second side 22 is respectively provided with two opposite first locking elements 6 and two opposite third locking elements 8; the first locking element 6 does not extend along to the third side edge 23. The two third locking elements 8 are located inside the two first locking elements 6 in a direction parallel to the first and

second sides

21, 22; in a direction perpendicular to the first and

second sides

21, 22, the first locking element 6 is closer to the chip module than the third locking element 8. The first locking element 6 is arranged next to the chip module 200, and the vertical distance from the first locking element 6 to the edge of the chip module 200 is smaller than the vertical distance from the third locking element 8 to the edge of the chip module 200.

The back plate 5 and the fixing base 2 are locked together through a third locking piece 8 to clamp the circuit board 300, when the clamping piece 4 carries the chip module 200 to cover the insulating body 1, the first locking piece 6 is used to lock the cover 3, and after the cover 3 is locked, an operator passes the operating tool through the first through hole 34 to perform final locking on the first locking piece 6 or adjust the locking force of the first locking piece 6.

The closer the first locking element 6 and the third locking element 8 are located, the more advantageous the locking of the chip module 200 is. The whole force transmission path for locking the chip module 200 is transmitted to the backplate 5 through the fixing base 2, and if the locking position of the cover plate 3 is too far away from the locking position of the backplate 5, the fixing base 2 is deformed, which causes a loss of force, is not favorable for locking the chip module 200, and easily causes damage to the chip module 200. In this embodiment, the first locking element 6 is disposed closer to the chip module 200 and the third locking element 8, and the pressing portion 37 of the cover plate 3 is provided with the first through hole 34 for fastening the first locking element 6 by using an operation tool, so as to reduce the damage rate of the chip module 200 during the process of assembling the electrical connector 100, improve the yield of products, and reduce the production cost. Meanwhile, the locking position of the first locking element 6 is closer to the center of the electrical connector 100, so that the force provided by the cover plate 3 can be more uniformly applied to the conductive terminal.

The above is merely a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby. All the equivalent changes and modifications made in the claims and the specification of the present invention should be covered by the present invention.

Claims

1. An electric connector is used for electrically connecting a chip module to a circuit board and comprises a base body arranged on the upper surface of the circuit board, a back plate arranged on the lower surface of the circuit board and a first locking piece for locking the base body, the circuit board and the back plate together; the method is characterized in that: the center of the back plate in a natural state is arched upwards to form an arched part so as to be pre-pressed on the circuit board upwards when being locked with the circuit board.

2. The electrical connector of claim 1, wherein: when the back plate is locked on the circuit board, the back plate is flat and attached to the lower surface of the circuit board.

3. The electrical connector of claim 2, wherein: the backboard comprises a frame body and a frame opening formed by the frame body in an enclosing mode, the frame body comprises an outer edge far away from the frame opening and an inner edge adjacent to the frame opening, and the frame body inclines downwards from the inner edge to the outer edge to form a shape similar to an umbrella.

4. The electrical connector of claim 3, wherein: the frame body comprises a pair of first frames which are arranged oppositely and a pair of second frames which are connected with the two first frames, and the pair of first frames and the pair of second frames are arranged in an enclosing manner to form the frame opening; the back plate is further provided with a reinforcing rib for connecting the two first frames, the reinforcing rib is located in the frame, and the reinforcing rib is formed into an arc-shaped part.

5. The electrical connector of claim 4, wherein: the intersection point of two diagonal lines of the back plate is located at the center of the reinforcing rib, and the center of the reinforcing rib is the highest point of the upward arching of the back plate along the vertical direction.

6. The electrical connector of claim 1, wherein: the upward arching magnitude of the back plate in the vertical direction in the natural state is larger than 0.3 mm.

7. The electrical connector of claim 1, wherein: the thickness of the back plate in the vertical direction is 2.5 mm.

8. The electrical connector of claim 1, wherein: the seat body comprises an insulating body and a fixed seat arranged around the periphery of the insulating body, and the first locking piece penetrates through the fixed seat, the circuit board and the back plate and locks the fixed seat, the circuit board and the back plate together.

9. The electrical connector of claim 8, wherein: the electric connector further comprises a clamping plate for clamping the chip module and a cover plate for covering the chip module, wherein the cover plate is arranged above the chip module, the fixing seat is provided with a first side edge and a second side edge which are opposite to each other, and the cover plate is pivoted to the first side edge of the fixing seat and used for pressing the chip module.

10. The electrical connector of claim 9, wherein: the both sides of grip block are equipped with the groove of stepping down, electric connector still includes first, second locking piece, first, second locking piece from the top down passes apron, grip block step down groove, fixing base, circuit board and backplate and lock attach together.