A DDR connector and terminal

Abstract

The present invention provides a new type of DDR connector and terminal. The connector includes a connector housing, terminals arranged in the connector housing, the terminals including upper row terminals and lower row terminals, a slot is provided in the connector housing along the length direction, a stop plate is provided in the slot along the length direction, a plug board is provided at the lower end of the stop plate, a V-shaped plug-in surface is provided on the plug board, and the contact ends of the upper row terminals and the lower row terminals are located in the slot. The plug-in surface is set to a V-shaped structure and is set at the rear side of the stop plate to protect the weak plug-in molding surface and avoid burrs caused by card insertion friction; the terminal force arm adopts an inverted C-shaped structure, thereby effectively reducing the impedance at this place and improving SI performance; the width of the inverted C-shaped structure terminal slowly increases, and the strength is guaranteed while increasing the force arm, which provides a solution to solve the problem of easy fatigue of the terminal due to the short force arm limited by the space size, and can achieve excellent SI performance.

Description

Technical Field

[0001] The present invention relates to the technical field of connectors, in particular to a DDR connector and a terminal. Background Art

[0002] DDR, double data rate synchronous dynamic random access memory, strictly speaking, DDR should be called DDR SDRAM, but people usually call it DDR memory. DDR connector is a connector that connects memory stick and circuit board. For such storage products, the contact performance between memory stick and DDR connector, as well as the welding performance between DDR connector and circuit board have a great impact on the quality of the equipment.

[0003] The DDR connector of the prior art generally has an upright structure. For example, patent CN209626509U discloses a DDR slot connector, which includes a plastic body, a plurality of PIN pins (5) covered in the plastic body, and a buckle for fixing or loosening the two ends of the memory stick. The plastic body is integrally formed, and its two ends vertically protrude upward to form a shell foot welding plate column. The shell foot welding plate column is provided with a receiving groove for fixing the buckle (1). The two sides of the receiving groove are provided with a shaft hole for the buckle to rotate. A plurality of PIN pins (5) are provided downward along the receiving groove. A first harpoon buckle hole, and a plurality of second harpoon buckle holes are arranged in the middle of the bottom surface of the plastic body; the DDR slot connector also includes: a protective shell arranged at the corners at both ends of the plastic body, the protective shell covers the left and right side surfaces at the corners at both ends of the plastic body and the lower area of ​​the outer end surface of the plastic body; a first harpoon, two of the first harpoons are arranged, which are buckled in the first harpoon buckle hole, and a portion of the pins are exposed outside the first harpoon buckle hole; a plurality of second harpoons, the second harpoons are buckled in the second harpoon buckle hole, and a portion of the pins are exposed outside the second harpoon buckle hole.

[0004] Patent CN207743419U discloses a new type of DDR memory socket connector, including a terminal component, a fastening component, a glass pin and a shell component; wherein the terminal component is inserted into the shell component and presents a double-row pin structure; wherein the fastening components are respectively arranged at both ends of the shell component; wherein the glass pins are respectively inserted at both ends and the middle of the shell component; the fastening component is provided with a card slot matching with the two ends of the shell component, and a buckle is provided at the bottom of the fastening component; wherein the terminal component includes a signal terminal and a ground terminal; the terminal component presents a double-row pin structure; the spacing between terminals is reduced, the protective effect of the ground terminal on the signal terminal is increased, and the mutual interference between the signal terminals is blocked; the fastening component is inserted into the two ends of the shell component, and the buckle at the bottom of the fastening component fastens the shell component.

[0005] However, the design defects of the existing DDR connector terminals themselves make it difficult to eliminate the crosstalk phenomenon between signals, which seriously affects the SI performance of the connector. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides a DDR connector and a terminal. The connector improves the SI performance of the connector by designing the connector housing and the structure of the terminal.

[0007] The technical solution of the present invention is: a DDR connector, the connector includes a connector shell, and terminals arranged in the connector shell, the terminals include a plurality of matching upper row terminals and lower row terminals, the connector shell is provided with a slot along the length direction, a stop plate is provided in the slot along the length direction, a plug board is provided at the lower end of some of the stop plates, each of the plug boards is provided with a V-shaped plug-in surface, and the contact ends of the upper row terminals and the lower row terminals are located in the slot and respectively located at the upper and lower ends of the stop plate.

[0008] Preferably, the connector housing is provided with a plurality of mounting grooves for mounting upper row terminals and lower row terminals, and the mounting grooves are communicated with the slots.

[0009] Preferably, the two sides of the installation slot are provided with corresponding baffles, and the baffles inside the slot are provided with corresponding plug-in surfaces, and the plug-in surfaces are wedge-shaped structures.

[0010] Preferably, corresponding insertion slots for inserting lock cards are provided on both sides of the connector housing.

[0011] Preferably, a positioning column for matching with a PCB board is further provided at the lower end of the connector housing.

[0012] Preferably, the upper row of terminals includes a first connecting arm, one end of the first connecting arm is provided with a first contact end, the other end of the first connecting arm is provided with a first welding end, and the first welding end is welded to the PCB board.

[0013] Preferably, the first connecting arm is provided with a first retaining portion, the first retaining portion is provided with a plurality of fixing grooves, and a plurality of card slots are provided on one side of the first retaining portion, and the first connecting arm is also provided with a corresponding protrusion.

[0014] Preferably, the first contact end is a horseshoe-shaped structure, and the first welding end and the first connecting arm form an L-shaped structure.

[0015] Preferably, the lower row of terminals comprises an integrally formed second connecting arm a and a second connecting arm b, and one end of the second connecting arm a is provided with a second contact end;

[0016] One end of the second connecting arm b is provided with a second welding end.

[0017] Preferably, the second connecting arm a is an inverted C-shaped structure, and the width of the second connecting arm a gradually increases along the direction from the second contact end to the second connecting arm b.

[0018] Preferably, the second connecting arm b and the second welding end form an L-shaped structure.

[0019] Preferably, a second retaining portion is further provided between the second connecting arm a and the second connecting arm b.

[0020] Preferably, a plurality of fixing grooves are provided on the second holding portion, and a corresponding clamping groove is also provided on one side of the second holding portion.

[0021] Preferably, a protrusion is further provided on the second connecting arm b, and a convex edge is further provided on the second connecting arm b on one side of the protrusion.

[0022] The present invention also provides a terminal, which comprises a plurality of matched upper row terminals and lower row terminals.

[0023] The upper row of terminals comprises a first connecting arm, one end of the first connecting arm is provided with a first contact end, the other end of the first connecting arm is provided with a first welding end, and the first welding end is welded to the PCB board.

[0024] Preferably, the first connecting arm is provided with a first retaining portion, the first retaining portion is provided with a plurality of fixing grooves, and a plurality of card slots are provided on one side of the first retaining portion, and the first connecting arm is also provided with a corresponding protrusion.

[0025] Preferably, the first contact end is a horseshoe-shaped structure, and the first welding end and the first connecting arm form an L-shaped structure.

[0026] Preferably, the lower row of terminals comprises an integrally formed second connecting arm a and a second connecting arm b, and one end of the second connecting arm a is provided with a second contact end;

[0027] One end of the second connecting arm b is provided with a second welding end.

[0028] Preferably, the second connecting arm a is an inverted C-shaped structure, and the width of the second connecting arm a gradually increases along the direction from the second contact end to the second connecting arm b.

[0029] Preferably, the second connecting arm b and the second welding end form an L-shaped structure.

[0030] Preferably, a second retaining portion is further provided between the second connecting arm a and the second connecting arm b.

[0031] Preferably, a plurality of fixing grooves are provided on the second holding portion, and a corresponding clamping groove is also provided on one side of the second holding portion.

[0032] Preferably, a protrusion is further provided on the second connecting arm b, and a convex edge is further provided on the second connecting arm b on one side of the protrusion.

[0033] The beneficial effects of the present invention are:

[0034] 1. The present invention has a simple structure. By setting the plug-in surface into a V-shaped structure and setting it on the rear side of the stop plate, the weak plug-in molding surface is protected and burrs are avoided due to friction of the card insertion.

[0035] 2. The terminal arm of the present invention adopts an inverted C-shaped structure, which makes the terminal convex, thereby effectively reducing the impedance at this point and improving SI performance;

[0036] 3. The width of the inverted C-shaped structure terminal of the present invention increases slowly, which ensures strength while increasing the force arm, optimizes the mechanical properties, and provides a solution to solve the problem of easy terminal fatigue due to the short force arm limited by the space size, while achieving excellent SI performance;

[0037] 4. The terminal of the present invention is provided with a retaining portion, which is connected to the connector housing through the retaining portion. Meanwhile, a fixing groove and a protrusion are provided on the retaining portion to achieve a stable connection with the connector housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural schematic diagram of the present invention;

[0039] Figure 2 For the present invention Figure 1 The enlarged structure diagram at A in the middle;

[0040] Figure 3 It is a partial enlarged structural schematic diagram of the connector housing of the present invention;

[0041] Figure 4 is a cross-sectional schematic diagram of the connector of the present invention;

[0042] Figure 5 It is a schematic diagram of the structure of the terminal of the present invention;

[0043] Figure 6 It is a structural schematic diagram of the upper row of terminals of the present invention;

[0044] Figure 7 It is a structural schematic diagram of the lower row of terminals of the present invention;

[0045] In the figure, 1-connector housing, 2-slot, 3-upper row terminals, 4-lower row terminals;

[0046] 11-installation slot, 12-baffle, 13-plugging surface, 14-plugging slot;

[0047] 21-stop plate, 22-plug plate, 23-V-shaped plug-in surface;

[0048] 31 - first connecting arm, 32 - first contact end, 33 - first welding end, 34 - first holding portion, 35 - slot, 36 - bump;

[0049] 40 - second connecting arm a, 41 - second connecting arm b, 42 - second contact end, 43 - second welding end, 44 - second holding portion, 45 - convex edge, 46 - fixing groove. DETAILED DESCRIPTION

[0050] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings: Example

[0051] like Figure 1 As shown, this embodiment provides a DDR connector, the connector includes a connector housing 1, and terminals arranged in the connector housing 1, the terminals include a plurality of upper row terminals 3 and lower row terminals 4 that match each other, as shown in FIG. Figure 2 and Figure 3 As shown, the connector housing 1 described in this embodiment is provided with a slot 2 along the length direction, a stop plate 21 is provided in the slot 2 along the length direction, a plug plate 22 is provided at the lower end of some of the stop plates 21, and a V-shaped plug surface 23 is provided on each of the plug plates 22, and the contact ends of the upper row terminals 3 and the lower row terminals 4 are located in the slot 2 and respectively at the upper and lower ends of the stop plate 21.

[0052] As preferred in this embodiment, Figure 4 As shown, the connector housing 1 is provided with a plurality of mounting grooves 11 for mounting the upper row terminals 3 and the lower row terminals 4, and the mounting grooves 11 are connected with the slot 2. In this embodiment, the mounting grooves 11 are provided with corresponding baffles 12 on both sides, and the baffles 12 located in the slot 2 are provided with corresponding plug-in surfaces 13, and the plug-in surfaces 13 are wedge-shaped structures, so as to facilitate the plug-in of the card.

[0053] As a preferred embodiment of the present invention, corresponding insertion slots 14 for inserting lock cards are provided on both sides of the connector housing 1 .

[0054] As a preferred embodiment of the present invention, the lower end of the connector housing 1 is further provided with a positioning column for matching with the PCB board, see Figure 3As shown in the cross-sectional view, when in use, the positioning connection with the PCB board is achieved through the positioning column.

[0055] As preferred in this embodiment, Figure 5 and 6 As shown, the upper row of terminals 3 includes a first connecting arm 31, one end of the first connecting arm 31 is provided with a first contact end 32, and the other end of the first connecting arm 31 is provided with a first welding end 33, and the first welding end 33 is used to be welded with the PCB board. In this embodiment, the first contact end 32 is a horseshoe-shaped structure, and the first welding end 33 and the first connecting arm 31 form an L-shaped structure.

[0056] As a preferred embodiment of the present invention, the first connecting arm 31 is provided with a first retaining portion 34 , the first retaining portion 34 is provided with a plurality of fixing grooves 46 , and a plurality of card slots 35 are provided on one side of the first retaining portion 34 , and the first connecting arm 31 is also provided with a corresponding protrusion 36 .

[0057] As a preferred embodiment of this invention, see Figure 5 and 7 As shown, the lower row of terminals 4 include an integrally formed second connecting arm a40 and a second connecting arm b41. In this embodiment, a second contact end 42 is provided at one end of the second connecting arm a40; a second welding end 43 is provided at one end of the second connecting arm b41. The second connecting arm b41 and the second welding end 43 form an L-shaped structure. In this embodiment, the second welding end 43 is used to be welded to a PCB board.

[0058] As a preferred embodiment of the present invention, in the present embodiment, the second connecting arm a40 is an inverted C-shaped structure, and the width of the second connecting arm a40 gradually increases along the direction from the second contact end 42 to the second connecting arm b41.

[0059] As a preferred embodiment of the present invention, a second holding portion 44 is further provided between the second connecting arm a40 and the second connecting arm b41. The second holding portion 44 is provided with a plurality of fixing grooves 46, and a corresponding clamping groove 35 is further provided on one side of the second holding portion 44.

[0060] As a preferred embodiment of the present invention, a protrusion 36 is further provided on the second connecting arm b41 , and a convex edge 45 is further provided on the second connecting arm b41 on one side of the protrusion 36 . Example

[0061] This embodiment provides a terminal, see Figure 5 As shown, the terminals include a plurality of matching upper row terminals 3 and lower row terminals 4.

[0062] As preferred in this embodiment, Figure 5 and 6 As shown, the upper row of terminals 3 includes a first connecting arm 31, one end of the first connecting arm 31 is provided with a first contact end 32, and the other end of the first connecting arm 31 is provided with a first welding end 33, and the first welding end 33 is used to be welded with the PCB board. In this embodiment, the first contact end 32 is a horseshoe-shaped structure, and the first welding end 33 and the first connecting arm 31 form an L-shaped structure.

[0063] As a preferred embodiment of the present invention, the first connecting arm 31 is provided with a first retaining portion 34 , the first retaining portion 34 is provided with a plurality of fixing grooves 46 , and a plurality of card slots 35 are provided on one side of the first retaining portion 34 , and the first connecting arm 31 is also provided with a corresponding protrusion 36 .

[0064] As a preferred embodiment of this invention, see Figure 5 and 7 As shown, the lower row of terminals 4 include an integrally formed second connecting arm a40 and a second connecting arm b41. In this embodiment, a second contact end 42 is provided at one end of the second connecting arm a40; a second welding end 43 is provided at one end of the second connecting arm b41. The second connecting arm b41 and the second welding end 43 form an L-shaped structure. In this embodiment, the second welding end 43 is used to be welded to a PCB board.

[0065] As a preferred embodiment of the present invention, in the present embodiment, the second connecting arm a40 is an inverted C-shaped structure, and the width of the second connecting arm a40 gradually increases along the direction from the second contact end 42 to the second connecting arm b41.

[0066] As a preferred embodiment of the present invention, a second holding portion 44 is further provided between the second connecting arm a40 and the second connecting arm b41. The second holding portion 44 is provided with a plurality of fixing grooves 46, and a corresponding clamping groove 35 is further provided on one side of the second holding portion 44.

[0067] As a preferred embodiment of the present invention, a protrusion 36 is further provided on the second connecting arm b41 , and a convex edge 45 is further provided on the second connecting arm b41 on one side of the protrusion 36 .

[0068] The above embodiments and descriptions are only for illustrating the principles and best embodiments of the present invention. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and improvements, all of which fall within the scope of the present invention to be protected.

Claims

1. A DDR connector, comprising a connector housing (1), and terminals arranged in the connector housing (1), wherein the terminals comprise a plurality of upper row terminals (3) and lower row terminals (4) that match each other, and wherein the connector housing (1) is provided with a slot (2) along the length direction, characterized in that: A stop plate (21) is arranged in the slot (2) along the length direction, a plug plate (22) is arranged at the lower end of some of the stop plates (21), and each of the plug plates (22) is provided with a V-shaped plug surface (23), and the contact ends of the upper row terminals (3) and the lower row terminals (4) are located in the slot (2) and are respectively located at the upper and lower ends of the stop plate (21); The upper row of terminals (3) comprises a first connecting arm (31), one end of the first connecting arm (31) is provided with a first contact end (32), the other end of the first connecting arm (31) is provided with a first welding end (33), and the first welding end (33) is used to be welded to a PCB board; The first contact end (32) is a horseshoe-shaped structure, and the first welding end (33) and the first connecting arm (31) form an L-shaped structure; The lower row terminal (4) comprises an integrally formed second connecting arm a (40) and a second connecting arm b (41), one end of the second connecting arm a (40) being provided with a second contact end (42); one end of the second connecting arm b (41) being provided with a second welding end (43), the second connecting arm b (41) and the second welding end (43) forming an L-shaped structure, and the second welding end (43) being used for welding with a PCB board; The second connecting arm a (40) is an inverted C-shaped structure, and the width of the second connecting arm a (40) gradually increases along the direction from the second contact end (42) to the second connecting arm b (41).

2. A DDR connector according to claim 1, characterized in that: The connector housing (1) is provided with a plurality of mounting grooves (11) for mounting upper row terminals (3) and lower row terminals (4), and the mounting grooves (11) are connected to the slots (2); The two sides of the installation slot (11) are provided with corresponding baffles (12), and the baffles (12) located in the slot (2) are provided with corresponding plug-in surfaces (13), and the plug-in surfaces (13) are wedge-shaped structures; Corresponding insertion slots (14) for inserting lock cards are provided on both sides of the connector housing (1); The lower end of the connector housing (1) is also provided with a positioning column for matching with the PCB board, and a positioning connection with the PCB board is achieved through the positioning column.

3. A DDR connector according to claim 1, characterized in that: The first connecting arm (31) is provided with a first retaining portion (34), a plurality of fixing grooves (46) are provided on the first retaining portion (34), and a plurality of card slots (35) are provided on one side of the first retaining portion (34).

4. A DDR connector according to claim 3, characterized in that: The first connecting arm (31) is also provided with a corresponding protrusion (36).

5. The DDR connector according to claim 1, characterized in that: A second holding portion (44) is further provided between the second connecting arm a (40) and the second connecting arm b (41); The second holding portion (44) is provided with a plurality of fixing grooves (46), and a corresponding clamping groove (35) is also provided on one side of the second holding portion (44).

6. A DDR connector according to claim 5, characterized in that: The second connecting arm b (41) is also provided with a protrusion (36), and the second connecting arm b (41) on one side of the protrusion (36) is also provided with a convex edge (35).

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