A connector

Abstract

A connector comprises a housing and terminals in the housing, the terminals have contact ends, the terminals include signal terminals and ground terminals, the contact ends of the terminals are connected with the middle parts of the terminals through elastic arms and fixing parts, and the contact ends are provided with contacts; at least two terminals including the signal terminals and the ground terminals are arranged in sequence to form a terminal group, in the same terminal group, the elastic arms of the adjacent signal terminals and the ground terminals have the same bending directions, the elastic arms and the contact ends of the adjacent signal terminals all face opposite directions, and the elastic arms and the fixing parts of the adjacent ground terminals have opposite bending directions; in a natural state, the contact end spacing between the adjacent terminals is not completely the same; in a compressed state of the terminals, the elastic arms are deformed to make the contact end spacing between any adjacent terminals equal. The application can improve the high-speed transmission performance of the connector and ensure the alignment contact between the contact ends of the terminals and the contacts of the mating terminals.

Description

Technical Field

[0001] This invention belongs to the field of connectors, and specifically relates to a connector. Background Technology

[0002] Socket connectors are commonly used in the chip industry. Socket connectors generally consist of a contact end and a PCB end. The contact end pins mainly come in two forms: PGA and LGA; the PCB end pins come in two forms: BGA and LGA. This results in three main types of socket products: PGA+BGA, LGA+BGA, and LGA+LGA, with the latter two being more commonly used currently.

[0003] Traditional socket connectors have all terminals with the same external dimensions and the same spacing. This means that the spacing between adjacent signal terminals and ground terminals is the same everywhere. Due to the size limitations of the solder balls at the end of the terminals, it is difficult to make the spacing at the end of the terminals smaller, which makes it difficult to achieve a smaller spacing between the signal terminals and the surrounding ground terminals, thus limiting the high-speed transmission performance of the connector.

[0004] Furthermore, during use, the terminal contact end of the connector can deform under the pressure of the adapter end, thereby changing the position of the contact point on the contact end. This can result in the terminal contact and the adapter contact not being properly aligned and making contact, affecting signal transmission. Summary of the Invention

[0005] The purpose of this invention is to provide a connector that improves the high-speed transmission performance of the connector and achieves the alignment and contact between the contacts of the contact end and the contacts of the adapter end after the terminals are compressed by improving the terminal shape and arrangement.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a connector, comprising a housing and terminals installed within the housing, one end of each terminal being a contact end, each terminal including a signal terminal and a ground terminal, the contact end of the terminal being connected to a fixed portion in the middle of the terminal via an elastic arm, and the contact end being provided with a contact point; at least two terminals, including a signal terminal and a ground terminal, are arranged sequentially to form a terminal group, in the same terminal group, the elastic arms of adjacent signal terminals and ground terminals have the same bending direction, the elastic arms and contact ends of adjacent signal terminals are oriented in opposite directions, and the elastic arms and fixed portions of adjacent ground terminals have opposite bending directions; in a natural state, the contact point spacing between adjacent terminals is not exactly the same; in a state where the terminals are compressed, the elastic arm deforms to make the contact point spacing between any adjacent terminals equal.

[0007] In the same terminal group, the contact ends of the signal terminals and the contact ends of the adjacent ground terminals have opposite orientations.

[0008] In the same terminal group, the contact ends of adjacent grounding terminals face the same direction.

[0009] The terminals inside the housing are arranged in rows, and several terminal groups are arranged in the same row; the terminal groups of adjacent rows of terminals inside the housing are staggered.

[0010] If there is not enough space at both ends of any row inside the housing to accommodate a terminal group, the terminals shall be arranged in the order of terminal connection between the terminal groups.

[0011] In its natural state, the contact distance between the signal terminal and the adjacent ground terminal is greater than the distance between the corresponding fixing parts.

[0012] The other end of the terminal opposite to the contact end is the PCB end. In the same terminal group, the PCB ends and fixing parts of adjacent signal terminals and ground terminals have the same bending direction. The PCB ends of adjacent signal terminals are bent in opposite directions, and the PCB ends of adjacent ground terminals are bent in opposite directions.

[0013] The terminals include type A terminals and type B terminals. The overall outline of type A terminals is C-shaped, and the overall outline of type B terminals is S-shaped.

[0014] The signal terminal is a type B terminal, and the grounding terminal includes type A terminals and type B terminals. The grounding terminal adjacent to the signal terminal is a type A terminal.

[0015] The contact end, elastic arm, and fixing part on the terminal are an integral structure.

[0016] The fixing part is provided with a locking claw.

[0017] The mounting cavity of the housing is divided into equal-sized cells by longitudinal and transverse partitions, and positioning grooves for fixing the terminals are provided in the cells.

[0018] The beneficial effects of the present invention are as follows: In the present invention, the contact ends of the signal terminal and the ground terminal are connected by the elastic arm and the fixing part of the terminal, and the elastic arm and the fixing part of the adjacent signal terminal and the ground terminal form a bend in the same direction. In this way, the contact ends of the signal terminal and the adjacent ground terminal are far apart, the shapes of the middle main body parts are similar, and the distance is close. The coupling state of the signal terminal and the ground terminal is changing. The reduction of the distance between the main body parts can improve the return current state of the reference ground, thereby improving the high-speed transmission performance.

[0019] Because this invention optimizes the orientation of the contact ends of adjacent signal terminals and ground terminals, and combines the bending direction of the elastic arms of adjacent signal terminals and ground terminals, the contact ends of the terminals will deform in different directions after being compressed, increasing or decreasing the contact distance between the contact ends of adjacent terminals. This ensures that the contact distance between each adjacent terminal is consistent under compression, thereby achieving a corresponding arrangement of the terminal contacts and the adapter contacts, so as to facilitate the alignment and contact between the terminal contacts and the adapter contacts. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a socket connector in the prior art;

[0021] Figure 2 This is a front view of the connector described in this invention;

[0022] Figure 3 This is a rear view of the connector described in this invention;

[0023] Figure 4 This is a schematic diagram of the structure of the type A terminal in its natural state according to the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the type A terminal under compressed state according to the present invention;

[0025] Figure 6 This is a schematic diagram of the B-type terminal of the present invention in its natural state.

[0026] Figure 7 This is a schematic diagram of the B-type terminal under compressed state according to the present invention;

[0027] Figure 8 This is a schematic diagram of the terminal type distribution and contact spacing in the natural state of this invention;

[0028] Figure 9 This is a schematic diagram of the terminal type distribution and contact spacing under compression conditions in this invention;

[0029] Figure 10 This is a general diagram showing the terminal type distribution of the connector described in this invention;

[0030] The markings in the diagram are: 1. Housing, 2. Terminal, 3. Solder ball, 4. Signal terminal, 5. Grounding terminal, 6. Contact terminal, 7. Fixing part, 8. Solder ball surface, 9. Flexible arm, 10. Claw, 11. Connecting arm, 12. Cell. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the invention in any way.

[0032] See attached document Figure 2 , 3 As shown in Figure 10, a connector includes a housing 1 and terminals 2 installed inside the housing 1. The mounting cavity of the housing 1 is divided into equal-sized cells 12 by crisscrossing longitudinal and transverse partitions. Positioning grooves for fixing the terminals 2 are provided in the cells 12.

[0033] like Figure 4-7 As shown, terminal 2 has a contact end 6 at one end and a PCB end in the form of a solder ball 8 at the other end, with a fixing part 7 in the middle. A claw 10 is provided on the fixing part 7 to hold terminal 2 in the positioning groove of the housing 1. According to its function, terminal 2 is divided into a signal terminal 4 and a ground terminal 5. The contact end 6 of the signal terminal 4 and the ground terminal 5 is connected to the fixing part 7 via an elastic arm 9. The elastic arm 9 is bent at a certain angle on the fixing part 7, and its end is also bent at a certain angle to form the contact end 6. The protruding part of the contact end 6 is the contact point of terminal 2. The PCB end is bent relative to the fixing part 7.

[0034] The bending direction of the elastic arm 9 of terminal 2 relative to the fixing part 7 is the same as the bending direction of the contact end 6 relative to the elastic arm 9. Simultaneously, the PCB end of terminal 2 is connected to the fixing part 7 as a single unit via the connecting arm 11. The bending direction of the connecting arm 11 relative to the fixing part 7 is opposite to the bending direction of the elastic arm 9 relative to the fixing part 7. At this time, the contact end 6 and the PCB end are located on the same side of the fixing part 7, making the overall outline of terminal 2 C-shaped. This type of terminal is defined as an A-type terminal. Figure 4 As shown, the elastic arm 9 and contact end 6 of the type A terminal are bent clockwise, while the connecting arm 11 and the PCB end are bent counterclockwise. When the contact end 6 of this type of terminal is compressed, the elastic arm 9 moves closer to the PCB end, causing the contact end 6 to move laterally away from the fixing part 7, as shown. Figure 5 As shown.

[0035] The bending direction of the elastic arm 9 of terminal 2 relative to the fixing part 7 is opposite to the bending direction of the contact end 6 relative to the elastic arm 9. Simultaneously, the bending direction of the PCB end of terminal 2 relative to the fixing part 7 is opposite to the bending direction of the elastic arm 9, resulting in an S-shaped overall terminal profile. This type of terminal is defined as a type B terminal. Figure 6 As shown, the elastic arm 9 of the type B terminal bends clockwise relative to the fixing part 7, while the contact end 6 bends counterclockwise relative to the elastic arm 9, and the PCB end bends counterclockwise relative to the fixing part 7. This places the contact end 6 and the PCB end on opposite sides of the fixing part 7, while the elastic arm 9 and the PCB end are on the same side of the fixing part. When the contact end 6 of this type of terminal is compressed, the elastic arm 9 moves towards the PCB end, causing the contact end 6 to approach the fixing part 7 laterally. Figure 7 As shown.

[0036] In this invention, signal terminal 4 is a type B terminal, and grounding terminal 5 has both type A and type B terminals. The terminals of each type are arranged in a certain pattern to form a terminal group, and several terminal groups are arranged in sequence in a row. Several rows of terminals are arranged inside the housing.

[0037] The terminal types and terminal arrangement rules of the terminal group can be referenced. Figure 8 , 9 As shown, Figure 8 , 9 The document includes three terminal groups arranged in sequence, with six terminals within the dashed frame forming one terminal group. Taking the first terminal group on the left as an example, it includes ground terminal 5, signal terminal 4, signal terminal 4, ground terminal 5, and ground terminal 5 arranged from left to right. According to the terminal shape, they are respectively type B terminal, type A terminal, type B terminal, type B terminal, type A terminal, and type B terminal, with the two type A terminals facing opposite directions.

[0038] In the same terminal group, the elastic arms 9 and fixing parts 7 of adjacent signal terminals 4 and ground terminals 5 have the same bending direction, and the contact end 6 of signal terminal 4 and the contact end 6 of adjacent ground terminals 5 have opposite orientations. The elastic arms 9 and contact ends 6 of adjacent signal terminals 4 are oriented in opposite directions, the elastic arms 9 and fixing parts 7 of adjacent ground terminals 5 have opposite bending directions, and the contact ends 6 of adjacent ground terminals 5 are oriented in the same direction.

[0039] like Figure 8 As shown, signal terminal 4 and adjacent ground terminal 5 are two types of terminals. In the natural state, the contact distance between the contact end 6 of signal terminal 4 and the contact end 6 of adjacent ground terminal 5 is greater than the distance between the corresponding fixing parts 7. Compared with the conventional solution where adjacent signal terminal 4 and ground terminal 5 use the same type of terminal, in this invention, adjacent signal terminal 4 and ground terminal 5 are two types of terminals, A and B, with different shapes. The elastic arm 9 of adjacent signal terminal 4 and ground terminal 5 and the fixing part 7 have the same bending direction, and the PCB end of adjacent signal terminal 4 and ground terminal 5 and the fixing part 7 have the same bending direction. This allows the main body parts of the two types of terminals (with the fixing part as a reference) to be closer together. Furthermore, the main body parts of adjacent signal terminal 4 and ground terminal 5 have similar shapes. The coupling state between signal terminal 4 and ground terminal 5 is variable, and the reduction in the distance between the main body parts can improve the return current state of the reference ground, thereby improving high-speed transmission performance.

[0040] For example, in conventional solutions, adjacent signal terminals and ground terminals are of the same type, with identical contact spacing and spacing between the fixing parts. Due to the influence of the solder ball diameter on the PCB end of the terminal, the spacing between the fixing parts of adjacent signal terminals and ground terminals is 1mm, and the contact spacing is also 1mm. In this invention, adjacent signal terminals 4 and ground terminals 5 are of two different types, A and B, with different shapes. Thus, with a contact spacing of 1mm between the signal terminals and ground terminals, the spacing between the fixing parts can be freely designed and reduced to less than 1mm, such as 0.55mm, thereby improving the return current state of the reference ground and improving high-speed transmission performance.

[0041] like Figure 8 As shown, in their natural state, the contact distances between adjacent terminals in the terminal group are A1, A2, and A3, respectively, as follows: the contact distance between two adjacent grounding terminals 5 is A1, the contact distance between signal terminal 4 and adjacent grounding terminal 5 is A2, and the contact distance between two adjacent signal terminals 4 is A3, with A1, A2, and A3 being unequal. Due to differences in terminal shape and contact end orientation, after terminal compression, the contact ends will deform in different directions. For example, after two adjacent grounding terminals 5 are compressed, the contact ends 6 deform towards the middle, reducing the contact distance, resulting in contact distance B1; after two adjacent signal terminals 4 are compressed, the contact ends 6 separate, increasing the contact distance, resulting in contact distance B3; after adjacent signal terminals 4 and grounding terminals 5 are compressed, their overall deformation direction is the same, but their initial orientations are different, so the deformation amplitudes are not exactly the same, causing a change in contact distance compared to before compression, resulting in contact distance B2; ultimately, the contact distances of all terminals tend to be consistent, i.e. Figure 9 As shown, B1=B2=B3. Furthermore, both grounding terminals at the connection point of two adjacent terminal groups are type B terminals. Before compression, the contact distance between the two terminals is A3, and after compression, the contact distance between them is B3.

[0042] According to the above arrangement rules, we obtain Figure 8 , 9 The terminal arrangement in the diagram is applied to the connector housing. Several terminal groups in each row are arranged according to this pattern. If there is insufficient space at the end of a row to accommodate a terminal group, the corresponding terminals are arranged according to the connection sequence between the terminal groups. For example, if there are two remaining positions at the right end of a row, the two terminals from the left end of the terminal group are placed in those positions. This ensures that the contact spacing of the terminals in any row within the connector housing is consistent under compression, thereby achieving corresponding contact arrangement and alignment between the connector contacts and the adapter contacts under compression, guaranteeing signal transmission.

[0043] In this invention, the PCB end of the terminal can be a contact end with contact points or a solder ball, that is, the connector can be LGA+BGA or LGA+LGA.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Those skilled in the art should understand that modifications or equivalent substitutions can be made to the specific implementation of the present invention with reference to the above embodiments. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention are within the protection scope of the pending claims.

Claims

1. A connector comprising a housing (1) and a terminal (2) mounted in the housing (1), one end of the terminal (2) being a contact end (6), the terminal (2) comprising a signal terminal (4) and a ground terminal (5), characterized in that: The contact end (6) of the terminal (2) is connected with the fixed part (7) of the middle part of the terminal through the elastic arm (9), and the contact end (6) is provided with a contact point; at least two terminals (2) including the signal terminal (4) and the ground terminal (5) are arranged in sequence into a terminal group, in the same terminal group, the elastic arms (9) of the adjacent signal terminal (4) and the ground terminal (5) have the same bending direction, the elastic arms (9) and the contact ends (6) of the adjacent signal terminals (4) all face opposite directions, and the elastic arms (9) and the fixed parts (7) of the adjacent ground terminals (5) have opposite bending directions; in the natural state, the contact point spacing between the adjacent terminals is not completely the same; in the compressed state of the terminal, the elastic arm (9) is deformed to make the contact point spacing between any adjacent terminals equal; In the same terminal group, the contact end (6) of the signal terminal (4) and the contact end (6) of the adjacent ground terminal (5) have opposite orientations, and the contact end (6) of the adjacent ground terminal (5) faces the same direction; In the natural state, the contact point spacing of the signal terminal (4) and the adjacent ground terminal (5) is greater than the spacing of the corresponding fixed part (7); The other end of the terminal (2) opposite to the contact end (6) is a PCB end, in the same terminal group, the PCB ends of the adjacent ground terminals (5) are respectively bent in opposite directions; The terminal includes an A-type terminal and a B-type terminal, the overall outline of the A-type terminal is C-shaped, and the overall outline of the B-type terminal is S-shaped; the signal terminal (4) is a B-type terminal, and the ground terminal (5) includes an A-type terminal and a B-type terminal, and the ground terminal (5) adjacent to the signal terminal (4) is an A-type terminal.

2. A connector according to claim 1, wherein: The terminals in the shell (1) are arranged in rows, and a plurality of terminal groups are arranged in the same row; the terminal groups of the adjacent two rows of terminals in the shell (1) are arranged in a staggered manner.

3. The connector of claim 1, wherein: The position where two ends of any row are insufficient to arrange a terminal group in the shell (1) is arranged with a terminal according to the terminal connection sequence between the terminal groups.

4. The connector of claim 1, wherein: In the same terminal group, the PCB ends and the fixed parts (7) of the adjacent signal terminal (4) and the ground terminal (5) have the same bending direction, and the PCB ends of the adjacent signal terminals (4) are respectively bent in opposite directions.

5. The connector of claim 1, wherein: The contact end, the elastic arm and the fixed part on the terminal are an integral structure.

6. The connector of claim 1, wherein: The fixed part is provided with a clamping jaw.

7. The connector of claim 1, wherein: The mounting cavity of the shell is divided into unit cells of equal size by longitudinal and transverse separation strips, and a positioning groove for fixing the terminal is arranged in the unit cell.

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