CN201069841Y - Electric connector assembly - Google Patents

Abstract

The utility model discloses an electric connector component, which comprises an electric connector able to electrically connect with a printed circuit board and a buckle piece combination pressing a wafer module group toward the electric connector. The buckle piece combination comprises a first group buckle piece for pressing an element module, and a second group buckle piece able to press toward the substrate of the wafer module group. The wafer module group after being assembled to the electric connector can guarantee certain flatness of the wafer module group during the process of pressing downwards the wafer module group through the buckle piece to ensure the good electrical connection between the electric connector and the wafer module group.

Description

Electrical Connector Assembly

【Technical field】

The utility model relates to an electrical connector assembly, in particular to an electrical connector assembly electrically connecting a chip module (CPU) to a printed circuit board.

【Background technique】

CPU connectors have been widely used in personal computers. For desktop computers, US Pat. No. 5,722,848 discloses a connector for desktop computers. This CPU connector is also known as a Zero Insertion Force (Zero Insertion Force) connector. It includes a base body on which a plurality of terminal grooves are arranged, and a terminal is accommodated in each terminal groove. On the base body, a cover body is slidably arranged, and a plurality of perforations are arranged on the cover body, which are respectively aligned with each terminal slot. At one side of the base body, a driving assembly is provided to drive the cover to move on the base body. The driving assembly is a cam structure, and is connected with an operating rod at the same time. When the operating lever is in the vertical position, the pins of the CPU can pass through the holes on the cover without any force, and then enter the terminal slot. Afterwards, the operating rod rotates and moves down, and at this time, the cam structure also rotates accordingly, and simultaneously drives the cover body to move on the base body. At this time, the CPU assembled on the cover also moves together with the cover, and then completes the electrical connection with the terminals in the terminal groove. The above are the connectors for desktop computers.

The basic structure of the CPU connector used in the notebook computer is similar to that of the aforementioned patent, but limited by the space of the notebook computer, the aforementioned joystick is changed to a horizontal drive plate. And its work and operating principle are also the same as those of the desktop computer, so it will not be described further.

US Patent No. 7,001,197 discloses another electrical connector. This type of connector is generally referred to as an LGA (Land Grid Array) connector. The main reason is that the CPU's performance is getting higher and higher, and its output Input/Output also increases accordingly. Therefore, the original pin type can no longer be used, but must be changed into a contact piece (Pad) type. In this way, more space can be added to accommodate the contact piece. Compared with the change of the CPU, the terminal structure on the connector also changes accordingly. Wherein the contact end of the terminal protrudes from the upper surface of the connector so as to directly contact with the contact piece of the CPU.

The electrical connector involved in the aforementioned '197 patent has neither a cover body nor a driving device for driving the cover body, but instead uses a structure referred to as an upper and lower iron sheet for short. Wherein the electrical connector is assembled in the center of the lower iron piece, while the upper iron piece is rotatably pivoted to one side of the lower iron piece, and a pressing rod is pivotally connected to the other side of the lower iron piece. When the CPU is placed on the connector, the upper iron sheet is covered, and finally the upper iron sheet is pressed and buckled on the lower iron sheet with a pressure rod to ensure electrical contact between the CPU and the LGA terminal on the contact surface of the connector.

This kind of LGA-shaped connector, when used on a desktop computer, has enough space, there is no problem, but when used on a notebook computer, the rocker-type pressure bar structure cannot be used.

In addition, there is another issue to consider, which is the basic architecture of the CPU. The CPU is composed of a substrate (Substrate) and a wafer module (Die) formed on it. The die module is protruded on the substrate. Therefore, when pressing the CPU against the connector, it is necessary to distribute the downforce evenly on the die module and the surrounding substrate. Because the wafer module or the substrate is pressed separately, the CPU may be deformed and warped due to uneven force, which will eventually affect the electrical connection characteristics.

In view of this, it is necessary to provide an improved electrical connector to overcome the above-mentioned defects of the electrical connector.

【Content of utility model】

The purpose of this utility model is to provide an electrical connector assembly provided with a push-down device, which can ensure that the chip module does not deform and warp when the chip module is pressed down.

In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: an electrical connector assembly, which includes an electrical connector electrically connected to a printed circuit board and a clasp assembly that presses the chip module to the electrical connector, The clip combination includes a clip body, a first group of clips for pressing the wafer module, and a second group of clips pressed against the chip module substrate. The first group of buckles is extended from the buckle body toward the first direction, and the first group of buckles includes a first buckle surface located on the first plane; the second group of buckles is also extended from the buckle body, which It includes a second buckle surface on the second plane and forms a level difference with the first buckle surface.

Compared with the prior art, the electrical connector assembly of the present utility model has the following advantages: the first set of buckles and the second set of buckles are provided in the buckle combination, and the buckle surfaces of the two form a step difference, so that the first set of buckles The chip can exert a downward force on the wafer module, and at the same time, the second set of buckles can apply a downward force to the substrate of the chip module, so as to ensure that the force is uniform when the chip module is pressed down, and it is not easy to be damaged due to deformation and warping. Affects electrical connection characteristics.

【Description of drawings】

Fig. 1 is a three-dimensional exploded view of the electrical connector assembly of the first preferred embodiment of the present invention;

Fig. 2 is a three-dimensional assembled view of the electrical connector assembly shown in Fig. 1;

Fig. 3 is a three-dimensional exploded view of the electrical connector assembly of the second preferred embodiment of the present invention;

Fig. 4 is a three-dimensional assembled view of the electrical connector assembly shown in Fig. 3;

Fig. 5 is a three-dimensional exploded view of the buckle combination of the electrical connector assembly of the third preferred embodiment of the present invention;

Fig. 6 is a three-dimensional assembled view of the buckle assembly shown in Fig. 5 .

【Detailed ways】

Please refer to FIG. 1 to FIG. 2 , which disclose an electrical connector assembly 100 according to a first preferred embodiment of the present invention, which includes an electrical connector 20 electrically connected to a printed circuit board 10 , mounted on the electrical connector 20 The chip module 30 in the conductive area, the heat sink 40 , and the buckle assembly 50 that presses the chip module 30 to the electrical connector 20 .

The electrical connector 20 is used to electrically connect the chip module 30 to the printed circuit board 10, and includes an insulating body 201, the insulating body 201 is generally elongated, and includes a conductive area 202 for accommodating a plurality of conductive terminals (not shown). and sidewalls 203 surrounding the conductive region 202 .

The chip module 30 has a roughly square structure, which is composed of a substrate 301 and a chip module 302 formed thereon.

The heat sink 40 is crimped to the chip module 30 for dissipating heat generated by the chip module 30 during operation, and includes a substantially square heat sink 401 and a heat pipe 403 assembled in the groove 402 of the heat sink.

The clip assembly 50 includes a clip body 501, a first group of clips 502 for pressing the wafer module, and a second group of clips 503 pressed against the chip module substrate 301. The buckle body 501 is a frame-shaped structure, which includes an inner edge 5011 and an outer edge 5012, wherein the first set of buckle pieces 502 is formed by extending downward from the inner edge 5011 of the frame-shaped structure, and the second set of buckle pieces 503 is formed by The outer edge 5012 extends downwardly. The first set of buckles 502 includes a number of buckles spaced apart from each other, and the buckles first extend horizontally, and then extend downwards to form a first buckle surface on the first plane. The second set of buckles 503 also includes several buckles. The buckle pieces spaced apart from each other form a second buckle surface on the second plane. That is, the first buckle surface is the same plane where the free ends of the first group of buckle pieces are located, and the second buckle surface is the same plane where the free ends of the second group of buckle pieces are located. form a gap. In addition, the four corners of the buckle body 501 of the frame structure are provided with assembly holes 504 for fixing the buckle assembly 50 .

During assembly, the electrical connector 20 is first positioned on the printed circuit board 10, then the chip module 30 is placed in the conductive area 202 of the electrical connector 20, and the heat sink 40 is crimped on the chip module 30, and then Assemble the buckle assembly 50 to the heat sink 40, and finally, the connectors (not shown) pass through the matching holes 504 of the circuit board 10 and the buckle body 501 sequentially from the bottom of the circuit board 10, so that the circuit board 10, the electrical The connector 20 , the heat sink 40 and the buckle assembly 50 are assembled into one body. In this way, the downward pressure exerted by the first set of buckle plates 502 provided on the buckle plate combination 50 is transmitted to the wafer module 302 of the chip module 30 through the heat sink 401, and the downward pressure exerted by the second set of buckle plates 503 acts directly. on the substrate 301 of the chip module 30 to ensure that the assembled chip module 30 does not warp.

Please continue to refer to FIGS. 3 to 4, which disclose an electrical connector assembly 800 according to a second preferred embodiment of the present invention, which also includes an electrical connector 80 electrically connected to a printed circuit board (not shown), an installation The chip module 802 in the conductive area 801 of the electrical connector 80 , the heat sink, and the buckle assembly 804 that presses the chip module 802 to the electrical connector 80 .

In detail, the differences between the second preferred embodiment and the first preferred embodiment are: First, the heat sink 8031 of the heat dissipation device in this embodiment is not provided with a groove for accommodating the heat dissipation pipe 8032. After assembly, the two directly crimped together; secondly, the buckle assembly 804 also includes the buckle body 805, the first set of buckle 8041 for pressing the wafer module (not numbered) and the first group of buckle pieces 8041 pressed against the wafer module substrate (unnumbered). The two sets of buckle pieces 8042, but the first and second sets of buckle pieces 8041, 8042 are not integrally formed, but are combined together through connectors (not shown).

The utility model also provides the electrical connector assembly of the third preferred embodiment. This embodiment provides another buckle combination device. Please refer to FIG. 5 to FIG. 6, the buckle body included in this buckle combination 900 902, the first and second sets of buckles 903, 906 are not integrally formed like the buckle combination 804 in the second preferred embodiment, the buckle body 902 is also a frame structure, and the end of the first set of buckles 903 is through The first transverse bar 904 and the second transverse bar 905 are connected. The frame structure of the buckle body 902 is divided into two regions by the first and second transverse bars 904 , 905 .

The electrical connector assemblies of the above three preferred embodiments all use the buckle combination provided to distribute the force applied on the wafer module evenly on the wafer module and the surrounding substrate when pressing down, thereby ensuring The chip module does not warp during assembly and operation, so as to better electrically connect to the printed circuit board.

Claims (10)

1. An electrical connector assembly, which includes an electrical connector that can be electrically connected to a printed circuit board and a buckle combination that presses the chip module to the electrical connector, characterized in that: the buckle combination includes a buckle body , the first group of clips for pressing the wafer module and the second group of clips pressed against the chip module substrate. 2. The electrical connector assembly according to claim 1, wherein the first group of clips extends from the clip body toward the first direction, and the first group of clips includes a first set of clips located on a first plane. The buckle surface: the second group of buckle pieces is also extended from the buckle piece body, which includes a second buckle surface located on a second plane, and forms a level difference with the first buckle surface. 3. The electrical connector assembly as claimed in claim 1, wherein the ends of the first set of tabs are connected by a transverse bar. 4. The electrical connector assembly according to claim 3, wherein the transverse bar and the clip body are located on the same plane. 5 . The electrical connector assembly according to claim 1 , wherein the first and second sets of clips are integrally formed with the clip body. 6 . 6 . The electrical connector assembly as claimed in claim 2 , wherein the first group of buckle pieces extend horizontally first, and then extend downward to form the first buckle surface. 7 . 7. The electrical connector assembly as claimed in claim 1, wherein the first group of buckles comprises several buckles, and there is a certain distance between the buckles. 8 . The electrical connector assembly according to claim 1 , wherein the second group of buckles comprises several buckles, and there is a certain distance between the buckles. 9. The electrical connector assembly according to claim 1, wherein the buckle body is a frame-shaped structure, which includes an inner edge and an outer edge, wherein the first group of buckles is formed from the inner edge of the frame-shaped structure toward the Formed by extending downward, the second set of buckles extends downward from the outer edge. 10. The electrical connector assembly as claimed in claim 9, wherein the frame structure includes at least one fixing portion disposed at a diagonal position.

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