M.2 interface electric connector fully surrounded by iron shell
Through the design of the M.2 interface electrical connector fully surrounded by iron shell, the problem of high-frequency interference is solved, and the effective shielding and high-frequency performance of the printed circuit board are achieved.
Patent Information
- Application Number
- CN202423145439.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-12-19
AI Technical Summary
The M.2 interface electrical connector is susceptible to high-frequency interference during high-speed signal transmission, and the existing design is difficult to effectively shield.
The design of the iron shell is fully enclosed, and all areas of the plastic body except the insertion port are covered by the metal shell, and a guide and limit structure are set between the shell and the plastic body to ensure the precise installation and fixation of the iron shell, while the grounding terminals are connected in series to improve high-frequency performance.
It effectively blocks the interference of high-frequency signals on the printed circuit board, and improves the high-frequency performance and reliability of the electrical connector.
Smart Images
Figure CN223273635U_ABST
Abstract
Description
[0001] The utility model relates to the field of electric connectors, in particular to an M.2 interface electric connector fully surrounded by an iron shell. Background Art
[0002] The M.2 interface is a new host interface solution compatible with multiple communication protocols. It's a micro interface with wide compatibility. Its key slots can be configured to implement different functions. The M.2 interface is a next-generation interface standard tailored for Ultrabooks, replacing the original mSATA interface. Its size and transmission performance far surpass mSATA.
[0003] The M.2 interface boasts a maximum read speed of 700MB / s and a write speed of 550MB / s. Socket 3 supports a PCI-E x4 interface, offering a theoretical bandwidth of up to 4GB / s. Due to these high read and write speeds, the signal transmission frequency is relatively high, inevitably leading to issues such as high-frequency interference. Therefore, adequate high-frequency shielding is essential. Summary of the Invention
[0004] In order to solve the problem of high-frequency interference of an M.2 interface electrical connector, the utility model provides an M.2 interface electrical connector fully surrounded by an iron shell.
[0005] The technical solution adopted by this utility model is:
[0006] An M.2 interface electrical connector fully enclosed by an iron shell comprises a plastic body, in which two rows of contact terminals are mounted. The heads of the two rows of contact terminals form a gap in the upper half of the front side of the plastic body for the insertion of the M.2 interface electrical connection portion. Each of the contact terminals contacts and forms an electrical connection with a contact point of the electrical connection portion on the M.2 interface. The bottom of each contact terminal is bent to form two rows of solder feet, which are soldered to a printed circuit board to form an electrical connection. A shell is mounted on the outside of the plastic body. The shell is a metal part and covers the top, rear, left and right sides, and front side of the plastic body except for the area connected to the M.2 interface. A guide structure and a limit structure are provided between the left and right sides of the plastic body and the shell.
[0007] Furthermore, the guide structure includes a pair of guide blocks respectively arranged on the two side end faces of the plastic body, the pair of guide blocks are distributed along the width direction of the plastic body, and the pair of guide blocks are staggered up and down. The two side end faces of the shell are respectively provided with guide grooves that cooperate with the pair of guide blocks on the corresponding side. The bottom of the guide groove is open and the groove is facing downward, and the top of each guide groove corresponds to the top surface of the guide block.
[0008] Furthermore, the limiting structure includes a pair of limiting grooves respectively arranged on the end faces of both sides of the plastic body, and the pair of limiting grooves corresponds to a pair of guide blocks on the same side and is located above the guide blocks; the end faces of the corresponding sides of the shell are respectively provided with a pair of stop springs, and the stop springs are formed by punching from the surface of the shell and bending toward the inside of the shell, and the stop springs are snap-fitted with the limiting grooves.
[0009] Furthermore, a T-shaped guide structure is provided on the end face of at least one side of the plastic body, and the T-shaped guide structure is located between a pair of guide blocks, including a vertical guide bar and a horizontal limit plate. The vertical guide bar is located between the horizontal limit plate and the plastic body, and an insertion gap is formed between the horizontal limit plate and the plastic body. A vertical through groove is provided on the corresponding end face of the shell, and the through groove is guided and cooperated with the vertical guide bar.
[0010] Furthermore, the notches at both ends of the through groove are V-shaped notches.
[0011] Furthermore, the bottoms of both side end surfaces of the plastic body are provided with stop steps extending horizontally outward, and the stop steps are matched with the bottom surface of the shell.
[0012] Furthermore, a clearance groove is provided at the top of the rear side surface of the plastic body and at a position corresponding to the contact terminal with a grounding function installed inside the plastic body. Multiple groups of bent spring sheets are distributed along the length direction on the rear side surface of the shell, and the bent spring sheets cooperate with the corresponding clearance grooves and contact the corresponding contact terminals.
[0013] Furthermore, the shell is an iron shell.
[0014] After adopting the above technical solution, the beneficial effects of the utility model are:
[0015] By fully surrounding the electrical connector with an iron shell, a shielding layer is formed on the outside of the electrical connector to prevent high-frequency signals from interfering with other components on the printed circuit board. All ground terminals in the electrical connector are connected in series through bent springs provided on the back of the shell, thereby improving the high-frequency performance of the electrical connector.
[0016] The iron shell is installed and fixed by the cooperation of the limiting structure and the guiding structure on both sides of the plastic body, ensuring that the iron shell can be accurately installed and effectively fixed, avoiding the iron shell from shaking outside the plastic body, and improving the reliability of the electrical connector. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural diagram of the plastic body.
[0018] Figure 2 Schematic diagram of the structure of the iron shell.
[0019] Figure 3It is a front perspective view of the electrical connector.
[0020] Figure 4 It is a rear perspective view of the electrical connector.
[0021] In the figure: plastic body 1, contact terminal 2, fixing foot 3, shell 4, guide block 5, guide groove 6, stop step 7, T-shaped guide structure 8, vertical guide bar 81, horizontal limit plate 82, through groove 9, limit groove 10, stop spring 11, give way groove 12, bent spring 13. DETAILED DESCRIPTION
[0022] The following is a further description of the specific embodiments of the present invention with reference to the accompanying drawings:
[0023] As shown in the figure, an M.2 interface electrical connector fully surrounded by an iron shell consists of a plastic body 1, contact terminals 2, fixing legs 3 and a shell 4. The contact terminals 2 are divided into two rows, and the two rows of contact terminals 2 include multiple signal terminals, ground terminals, etc. The two rows of contact terminals 2 are installed in the plastic body 1. The heads of the two rows of contact terminals 2 form an insertion slot of a certain specification in the upper half of the front side of the plastic body. The insertion slot is for the M.2 interface electrical connection part to be inserted, so that each contact terminal contacts the contact point of the electrical connection part on the M.2 interface and forms an electrical connection. The bottom of each contact terminal 2 is bent to form two rows of solder legs, which are welded to the printed circuit board to form an electrical connection. Fixing legs 3 are respectively installed on both sides of the bottom of the plastic body 1. The fixing legs 3 cooperate with the corresponding mounting holes of the printed circuit board to fix the electrical connector. The fixing legs 3 are made of copper or iron.
[0024] The housing 4 is mounted on the outside of the plastic body 1 and is made of electroplated iron. It covers all areas of the plastic body 1 except the bottom and the M.2 connector insertion port. This includes the top, rear, left, and right sides, as well as the front, excluding the area surrounding the M.2 connector. This effectively shields the connector from high-frequency interference. Guides and position-limiting structures are located between the left and right sides of the plastic body 1 and the housing to ensure precise installation and secure fixation.
[0025] Taking the guide structure on one side of the plastic body 1 as an example, it includes a pair of guide blocks 5. The guide blocks 5 are rectangular convex structures formed on the end face of the plastic body. The pair of guide blocks 5 are distributed along the width direction of the plastic body 1. The pair of guide blocks 5 are staggered up and down. The corresponding end face of the shell 4 is provided with a guide groove 6 that cooperates with the pair of guide blocks. The bottom of the guide groove 6 is open and the notch faces downward. The top of each guide groove 6 corresponds to the top surface of the guide block 5. During the insertion process, the guide groove 6 cooperates with the guide block 5 to ensure that the shell is vertically downwardly sleeved on the outside of the plastic body 1. The bottom of the two side end faces of the plastic body 1 is provided with a stop step 7 extending horizontally outward. After the shell 4 is installed in place, the bottom edges of the shell 4 on both sides contact and cooperate with the stop step 7 to form a limit.
[0026] In order to better guide the shell 4, a T-shaped guide structure 8 is provided on the end face of one side of the plastic body 1. The T-shaped guide structure 8 is located between a pair of guide blocks 5 on the same side, and includes a vertical guide bar 81 and a horizontal limit plate 82. The vertical guide bar 81 is located between the horizontal limit plate 82 and the plastic body 1. An insertion gap is formed between the horizontal limit plate 82 and the plastic body 1. A vertical through groove 9 is provided on the end face of the corresponding side of the shell. The notches at both ends of the through groove 9 are V-shaped. The through groove 9 is guided and matched with the vertical guide bar 81. The side of the shell 4 is inserted between the horizontal limit plate 82 and the end face of the plastic body 1.
[0027] Taking the limiting structure on one side of the plastic body 1 as an example, it includes a pair of limiting grooves 10 set on the end face of the plastic body 1, and the pair of limiting grooves 10 correspond to the pair of guide blocks 5 and are located directly above the guide blocks 5; a pair of stop springs 11 are respectively provided on the end faces of the corresponding sides of the shell 4, and the stop springs 11 are formed by punching from the shell surface and bending toward the inside of the shell. After the shell 4 is installed in place, the stop springs 11 are snap-fitted with the limiting grooves 10, and the shell 4 and the plastic body 1 are fixed by utilizing the limiting effect of the limiting grooves 10 and the elastic force of the stop springs 11.
[0028] In order to further improve the high-frequency performance, a clearance groove 12 is provided at the top of the rear side of the plastic body corresponding to the grounding terminal installed inside the plastic body, so that each grounding terminal is located in the corresponding clearance groove 12, and a plurality of bent spring pieces 13 are distributed along the length direction of the rear side of the shell 4. The bent spring pieces 13 correspond to the clearance grooves 12 and contact the grounding terminals inside the clearance grooves 12, so that all the grounding terminals are connected in series by the shell 4, thereby achieving the purpose of improving the high-frequency performance.
Claims
1. An M.2 interface electrical connector fully enclosed by an iron shell, comprising a plastic body, two rows of contact terminals mounted within the plastic body, the heads of the two rows of contact terminals forming a gap in the upper front half of the plastic body for insertion of the M.2 interface electrical connector, each contact terminal contacting and electrically connecting with a contact point of the electrical connector on the M.2 interface, the bottom of each contact terminal being bent to form two rows of solder feet, which are soldered to a printed circuit board to form an electrical connection, characterized in that: A shell is installed on the outside of the plastic body. The shell is a metal part. The shell covers the top surface, rear side, left and right side surfaces, and other areas of the front side of the plastic body except the area connected to the M.2 interface; a guiding structure and a limiting structure are set between the left and right side surfaces of the plastic body and the shell.
2. The M.2 interface electrical connector fully enclosed by an iron shell according to claim 1, characterized in that: The guide structure includes a pair of guide blocks respectively arranged on the two side end surfaces of the plastic body, the pair of guide blocks are distributed along the width direction of the plastic body, and the pair of guide blocks are staggered up and down. The two side end surfaces of the shell are respectively provided with guide grooves that cooperate with the pair of guide blocks on the corresponding side. The bottom of the guide groove is open and the groove is facing downward, and the top of each guide groove corresponds to the top surface of the guide block.
3. The M.2 interface electrical connector fully enclosed by an iron shell according to claim 2, characterized in that: The limiting structure includes a pair of limiting grooves respectively arranged on the end faces of both sides of the plastic body, and the pair of limiting grooves corresponds to a pair of guide blocks on the same side and is located above the guide blocks; the end faces of the corresponding sides of the shell are respectively provided with a pair of stop springs, and the stop springs are formed by punching from the surface of the shell and bending into the inside of the shell, and the stop springs are snap-fitted with the limiting grooves.
4. The M.2 interface electrical connector fully enclosed by an iron shell according to claim 2, characterized in that: A T-shaped guide structure is provided on the end face of at least one side of the plastic body. The T-shaped guide structure is located between a pair of guide blocks and includes a vertical guide bar and a horizontal limit plate. The vertical guide bar is located between the horizontal limit plate and the plastic body. An insertion gap is formed between the horizontal limit plate and the plastic body. A vertical through groove is provided on the corresponding end face of the shell, and the through groove is guided and cooperated with the vertical guide bar.
5. The M.2 interface electrical connector fully enclosed by an iron shell according to claim 4, characterized in that: The notches at both ends of the through groove are V-shaped notches.
6. The M.2 interface electrical connector fully enclosed by an iron shell according to claim 2, characterized in that: The bottoms of both side end surfaces of the plastic body are provided with stop steps extending horizontally outwards, and the stop steps are matched with the bottom surface of the shell.
7. The M.2 interface electrical connector fully enclosed by an iron shell according to claim 1, characterized in that: A clearance groove is provided at the top of the rear side surface of the plastic body and at a position corresponding to the contact terminal with a grounding function installed inside the plastic body. Multiple groups of bent spring sheets are distributed along the length direction of the rear side surface of the shell. The bent spring sheets cooperate with the corresponding clearance grooves and contact the corresponding contact terminals.
8. The M.2 interface electrical connector fully enclosed by an iron shell according to claim 1, characterized in that: The shell is an iron shell.