Narrow-pitch high-frequency substrate electric connector

Abstract

The invention provides a narrow-spacing high-frequency substrate electric connector, which comprises a lengthwise insulating body, a plurality of conductive terminals fixed on the insulating body and a shielding shell covering the insulating body, the conductive terminals comprise a plurality of first terminals and a plurality of second terminals which are alternately arranged in the lengthwise direction of the insulating body, and each conductive terminal is provided with a contact arm which extends forwards to enable the front end of the conductive terminal to be a free end and a welding part which is located on the lower side of the conductive terminal to be installed on a circuit board. The contact arms of the first terminals and the contact arms of the second terminals are arranged at intervals in the height direction so as to form an insertion space for insertion of a butt joint element. According to the narrow-spacing high-frequency substrate electric connector, the insulation distance between the conductive terminals can be increased, the structural strength of the insulation body is improved, and the situation of signal short circuit caused by left-right offset plugging of a butting connector is effectively prevented.

Description

Technical Field

[0001] The invention relates to an electric connector. Background Art

[0002] Electrical connectors are used more and more widely in various electronic devices. Electrical connectors generally include an insulating body and conductive terminals fixed in the insulating body. The conductive terminals are fixed in terminal slots provided on the insulating body. Two adjacent terminal slots are separated by partition walls. In some cases, the electrical connector needs to be provided with more conductive terminals to transmit high-frequency signals. At this time, the insulating body is usually in a longitudinal shape, and a large number of conductive terminals are provided on the longitudinal insulating body. In addition, since the contact portions of the conductive terminals are located on the same side of the docking element, the wall thickness of the partition walls of the insulating body between adjacent conductive terminals is thinner, which not only has weak structural strength but also may cause contact short circuits due to the insertion deviation of the docking connector.

[0003] In view of this, it is necessary to improve the existing electrical connector to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a narrow pitch high frequency substrate electrical connector, which has a simple structure, a strong self-locking function and a high electrical connection reliability.

[0005] To achieve the above-mentioned purpose of the invention, the present invention provides a narrow-pitch high-frequency substrate electrical connector, which includes an insulating body in a longitudinal shape, a plurality of conductive terminals fixed to the insulating body, and a shielding shell covering the outside of the insulating body, the conductive terminals include a plurality of first terminals and a plurality of second terminals alternately arranged in the longitudinal direction of the insulating body, each of the conductive terminals has a contact arm extending forward so that its front end is a free end and a welding portion located on its lower side for installation on the circuit board, the contact arm of the first terminal and the contact arm of the second terminal are spaced apart in the height direction to form a plug-in space for inserting the docking element.

[0006] As a further improvement of the present invention, the insulating body has a plurality of terminal channels staggered in the longitudinal direction, the terminal channels penetrate the insulating body in the front-to-back direction, and are divided into two rows spaced apart in the height direction for the contact arms of the first and second terminals to pass through respectively.

[0007] As a further improvement of the present invention, the insulating body includes a base, an upper end wall and a lower end wall extending forward from the base, the terminal channel is arranged on the base, the upper end wall and the lower end wall are arranged opposite to each other in the height direction, and the upper and lower end walls are both provided with a plurality of terminal grooves extending in the front-to-back direction, each of the terminal grooves and the corresponding terminal channel are connected front-to-back to accommodate the same conductive terminal.

[0008] As a further improvement of the present invention, the insulating body further comprises a pair of side end walls located on both sides of the upper and lower end walls in the longitudinal direction, and the upper and lower end walls and the side end walls are spaced apart in the longitudinal direction to form a clearance space.

[0009] As a further improvement of the present invention, the shielding shell includes an upper shell part and a lower shell part which are arranged relatively to each other in the height direction, and the upper and lower shell parts are both provided with a pair of extension arms extending backward, and the insulating body is provided with a limiting groove which is open forward for the corresponding extension arm to be inserted and fixed, and the limiting groove is located directly behind the clearance space and is connected thereto.

[0010] As a further improvement of the present invention, the contact arms of the first terminals are arranged in one row along the longitudinal direction, and the contact arms of the second terminals are arranged in another row along the longitudinal direction.

[0011] As a further improvement of the present invention, each of the contact arms is provided with a contact portion protruding toward the inside of the plug-in space in the height direction, and the contact portions of the first and second terminals are arranged opposite to each other in the height direction.

[0012] As a further improvement of the present invention, in the height direction, the contact arm of the first terminal is located at the lower side of the contact arm of the second terminal, and the front end of the contact arm of the first terminal has a tendency to approach the contact arm of the second terminal, and the front end of the contact arm of the second terminal also has a tendency to approach the contact arm of the first terminal.

[0013] As a further improvement of the present invention, the first terminal is T-shaped and includes a first fixing portion extending backward and upward from the contact arm, a first stopping portion extending upward from the rear end of the first fixing portion, and the welding portion extending downward from the rear end of the first fixing portion.

[0014] As a further improvement of the present invention, the second terminal is L-shaped and includes a second fixing portion extending backward and downward from the contact arm, a second stopping portion extending downward from the second fixing portion, and the welding portion located at the lower side of the second stopping portion.

[0015] Beneficial effects of the present invention: The narrow pitch high frequency substrate electrical connector of the present invention arranges the conductive terminals as a plurality of first terminals and a plurality of second terminals alternately arranged in the longitudinal direction of the insulating body, and each conductive terminal has a contact arm extending forward so that its front end is a free end and a welding portion located on its lower side for installation on the circuit board, and at the same time, the contact arm of the first terminal and the contact arm of the second terminal are arranged at intervals in the height direction to form a plug-in space for inserting the docking element, thereby dividing the contact arms of the conductive terminals into two rows, which are arranged at intervals in the height direction and staggered in the longitudinal direction, thereby increasing the insulation distance between the conductive terminals, increasing the structural strength of the insulating body, and effectively preventing signal short circuits caused by left-right offset plugging of the docking connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional assembly diagram of the narrow pitch high frequency substrate electrical connector of the present invention installed on a circuit board.

[0017] Figure 2 yes Figure 1 The narrow pitch high frequency substrate electrical connector is shown installed on a circuit board from another perspective.

[0018] Figure 3 yes Figure 1 The three-dimensional exploded view of the narrow pitch high frequency substrate electrical connector is shown.

[0019] Figure 4 yes Figure 3 Another view of the narrow pitch high frequency substrate electrical connector is shown.

[0020] Figure 5 yes Figure 3 A three-dimensional view of a first terminal of a narrow pitch high frequency substrate electrical connector is shown.

[0021] Figure 6 yes Figure 3 A three-dimensional view of a second terminal of a narrow pitch high frequency substrate electrical connector is shown.

[0022] Figure 7 yes Figure 3 A top view of the shielding housing of the narrow pitch high frequency substrate electrical connector is shown.

[0023] Figures 8 to 10 yes Figure 1 A cross-sectional view of a narrow pitch high frequency substrate electrical connector is shown. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below in conjunction with the embodiments shown in the accompanying drawings. However, the embodiments do not limit the present invention, and any structural, methodological, or functional changes made by a person skilled in the art based on the embodiments are all within the protection scope of the present invention.

[0025] Please refer to Figures 1 to 10 The figure shows a preferred embodiment of the narrow pitch high frequency substrate electrical connector 100 of the present invention, wherein the narrow pitch high frequency substrate electrical connector 100 is used to be installed on a circuit board 500, and includes a longitudinally elongated insulating body 1, a plurality of conductive terminals 2 fixed to the insulating body 1, and a shielding shell 3 covering the outside of the insulating body 1.

[0026] Please refer to Figures 1 to 4 Combined with Figures 8 to 10 As shown, the insulating body 1 has a plurality of terminal channels 101 staggered in the longitudinal direction, the terminal channels 101 penetrate the insulating body 1 in the front-to-back direction, and are divided into two rows spaced apart in the height direction, and the two rows of terminal channels 101 are alternately arranged in the longitudinal direction.

[0027] Specifically, the insulating body 1 includes a base 11, an upper end wall 12 and a lower end wall 13 extending forward from the base 11, the terminal channel 101 is arranged on the base 11, the upper end wall 12 and the lower end wall 13 are arranged opposite to each other in the height direction, and the upper and lower end walls 12 and 13 are provided with a plurality of terminal grooves 102 extending in the front-to-back direction, each of the terminal grooves 102 and the corresponding terminal channel 101 are connected front-to-back to accommodate the same conductive terminal 2.

[0028] In addition, the insulating body 1 further has a pair of side end walls 14 located on both sides of the upper and lower end walls 12 and 13 in the longitudinal direction. The upper and lower end walls 12 and 13 and the side end walls 14 are spaced apart in the longitudinal direction to form a clearance space 103 .

[0029] The insulating body 1 is provided with a plurality of limit grooves 104 which are open forward and are located directly behind and communicated with the corresponding clearance spaces 103. In this embodiment, the limit grooves 104 are provided on the base 11 and penetrate the base 11 in the front-to-back direction.

[0030] Please refer to Figures 1 to 6 Combined with Figures 8 to 10 As shown, the conductive terminal 2 includes a plurality of first terminals 2a and a plurality of second terminals 2b alternately arranged in the longitudinal direction of the insulating body 1, the first terminals 2a and the second terminals 2b have different shapes and structures, but each of the conductive terminals 2 has a contact arm 21 extending forward so that its front end is a free end and a welding portion 23 located on its lower side for installation on the circuit board 500, the contact arm 21 of the first terminal 2a and the contact arm 21 of the second terminal 2b are spaced apart in the height direction to form an insertion space for inserting a docking element (not shown).

[0031] The terminal passages 101 are divided into two rows spaced apart in the height direction for the contact arms 21 of the first and second terminals 2a and 2b to pass through respectively. Each of the terminal passages 101 includes a first passage portion 1011 and a second passage portion 1012 of different heights, the first passage portion and the second passage portion are connected to form an L shape, and a stop step 1013 is formed in the terminal passage 101. The first passage 1011 is located in front of the second passage portion 1012, and the height of the first passage portion 1011 is less than the height of the second passage portion 1012.

[0032] The contact arms 21 of the first terminals 2a are arranged in one row along the longitudinal direction, and the contact arms 21 of the second terminals 2b are arranged in another row along the longitudinal direction. Each of the contact arms 21 is provided with a contact portion 210 protruding inwardly of the insertion space in the height direction, and the contact portions 210 of the first and second terminals 2a, 2b are arranged opposite to each other in the height direction.

[0033] Specifically, in a preferred embodiment of the present invention, the contact portions 210 of the first and second terminals 2a, 2b are relatively arranged in the height direction, which means that they are corresponding and basically aligned in the height direction, but a certain front-to-back misalignment is allowed.

[0034] Furthermore, in the height direction, the contact arm 21 of the first terminal 2a is located at the lower side of the contact arm 21 of the second terminal 2b, and the front end of the contact arm 21 of the first terminal 2a has a tendency to approach the contact arm 21 of the second terminal 2b, and the front end of the contact arm 21 of the second terminal 2b also has a tendency to approach the contact arm 21 of the first terminal 2a.

[0035] like Figure 5 and Figure 8 As shown, the first terminal 2a is T-shaped and includes a first fixing portion 22 extending backward and upward from the contact arm 21, a first stopping portion 24 extending upward from the rear end of the first fixing portion 22, and the welding portion 23 extending downward from the rear end of the first fixing portion 22.

[0036] The first fixing portion 22 includes a fixing body 221 and a first interference portion 223 protruding upward from the fixing body 221. Preferably, in this embodiment, the first interference portion 223 is a protruding structure formed by stamping from the fixing body 221, so that a notch 2212 located at the lower side of the first interference portion 223 is formed on the fixing body 221.

[0037] In this embodiment, the front end of the contact arm 21 of the first terminal 2a is upwardly tilted, and the contact arm 21 includes a first arm portion 211 located at the rear side thereof and a second arm portion 212 located at the front side thereof, the material thickness of the first arm portion 211 in the height direction is greater than the material thickness of the second arm portion 212 in the height direction, and the second arm portion 212 is upwardly tilted in the direction from the back to the front, and the lower side of the rear portion of the first arm portion 211 is abutted against the insulating body 1.

[0038] like Figure 6 and Fig. 9 As shown, the second terminal 2 b is L-shaped and includes a second fixing portion 25 extending backward and downward from the contact arm 21 , a second stopping portion 26 extending downward from the second fixing portion 25 , and the welding portion 23 located at the lower side of the second stopping portion 26 .

[0039] The second fixing portion 25 is provided with a second interference portion 251 at a lower side thereof. Similar to the formation of the first interference portion 223 , the second interference portion 251 is a protruding structure formed by stamping from a fixing body of the second fixing portion 25 .

[0040] Please refer to Figures 1 to 4 Combined with Figures 7 to 10 As shown, the shielding shell 3 includes an upper shell part 31 and a lower shell part 32 which are arranged relatively to each other in the height direction. The upper and lower shell parts 31, 32 are both provided with a pair of extension arms 301 extending backward. The limiting groove 104 is open forward for the corresponding extension arm 301 to be inserted backward and fixed. The clearance space 103 provides a movable space for the extension arm 301 to move backward to facilitate its insertion, and can shorten the movement stroke of the extension arm 301 for the backward insertion, so as to facilitate the installation.

[0041] In the present invention, the shielding shell 3 also includes a connecting portion 34 located on the front sides of the upper and lower shell parts 31 and 32, and the upper shell part 31 and the lower shell part 32 are connected to each other through the connecting portion 34, so that the shielding shell 3 is a one-piece structure, and the shielding shell 3 is assembled to the outside of the insulating body 1 along the direction from front to back, and the conductive terminal 2 is assembled to the insulating body 1 along the direction from back to front.

[0042] The pair of extension arms 301 provided on the upper housing portion 31 are disposed on both sides in the longitudinal direction and are located outside the conductive terminal 2 in the longitudinal direction. Further, the pair of extension arms 301 provided on the upper housing portion 31 and the pair of extension arms 301 provided on the lower housing portion 32 are respectively provided in upper and lower correspondence. That is, in particular, as Figure 7As shown, the extension arms 301 on the same side of the upper and lower shell parts 31 and 32 in the longitudinal direction are aligned and arranged correspondingly, and the width of the extension arm 301 on the lower shell part 32 in the longitudinal direction is greater than the width of the extension arm 301 on the upper shell part 31 in the longitudinal direction.

[0043] The shielding shell 3 further includes a first side plate 35 formed by bending upward from both ends of the lower shell part 32 in the longitudinal direction, and a second side plate 36 formed by bending downward from both ends of the upper shell part 31 in the longitudinal direction. A pair of the first side plates 35 are provided on each side of the lower shell part 32 in the longitudinal direction, and a second side plate 36 is provided on each side of the upper shell part 31 in the longitudinal direction. On the same side of the shielding shell 3 in the longitudinal direction, the pair of first side plates 35 are located on the outer side of the second side plate 36, and are respectively placed on both sides of the second side plate 36 in the front-rear direction.

[0044] The lower housing portion 32 is provided with a front convex plate 321 and a limit space 323 opened backwards, the lower end wall 13 is inserted forwards and accommodated in the limit space 323, and the shape of the lower end wall 13 is adapted to the shape of the limit space 323. Figure 7 As shown, the front protrusion plate 321 is exposed at the front side of the upper housing portion 31 .

[0045] During assembly, the second terminal 2b with the contact arm 21 located on the upper side is first assembled into the insulating body 1 along the direction from back to front, until the second stop portion 26 abuts against the stop step 1013 in the corresponding terminal channel 101, and the second interference portion 251 of the second terminal 2b is clamped with the insulating body 1, so as to achieve the fixation of the second terminal 2b in the insulating body 1; similarly, the first terminal 2a with the contact arm 21 located on the lower side is assembled into the insulating body 1 along the direction from back to front, until the first stop portion 24 abuts against the stop step 1013, and the first interference portion 223 is clamped with the insulating body 1, so as to achieve the fixation of the first terminal 2a in the insulating body 1. Next, the shielding shell 3 is assembled from front to back outside the whole body formed by the conductive terminal 2 and the insulating body 1, so that the extension arm 301 is inserted into the limiting groove 104, so as to achieve the fixation between the shielding shell 3 and the insulating body 1.

[0046] The narrow pitch high frequency substrate electrical connector 100 of the present invention is achieved by arranging the conductive terminals 2 as a plurality of first terminals 2a and a plurality of second terminals 2b alternately arranged in the longitudinal direction of the insulating body 1, and making each conductive terminal 2 have a contact arm 21 extending forward so that its front end is a free end and a soldering portion 23 located on its lower side for installation on the circuit board. At the same time, the contact arm 21 of the first terminal 2a and the contact arm 21 of the second terminal 2b are arranged at intervals in the height direction to form a plug-in space for inserting the docking element, thereby dividing the contact arms 21 of the conductive terminals 2 into two rows, which are arranged at intervals in the height direction and staggered in the longitudinal direction, thereby increasing the insulation distance between the conductive terminals 2, increasing the structural strength of the insulating body 1, and effectively preventing signal short circuits caused by left-right offset plugging of the docking connector.

[0047] It should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0048] The above embodiments are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the preferred embodiments, a person skilled in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A narrow pitch high frequency substrate electrical connector, comprising an elongated insulating body, a plurality of conductive terminals fixed to the insulating body, and a shielding shell covering the insulating body, characterized in that: The conductive terminals include a plurality of first terminals and a plurality of second terminals alternately arranged in the longitudinal direction of the insulating body, each of the conductive terminals has a contact arm extending forward so that its front end is a free end and a soldering portion located at its lower side for mounting on a circuit board, and the contact arm of the first terminal and the contact arm of the second terminal are spaced apart in the height direction to form an insertion space for inserting a docking element.

2. The narrow pitch high frequency substrate electrical connector according to claim 1, characterized in that: The insulating body has a plurality of terminal channels staggered in the longitudinal direction. The terminal channels penetrate the insulating body in the front-to-back direction and are divided into two rows spaced apart in the height direction for contact arms of the first and second terminals to pass through respectively.

3. The narrow pitch high frequency substrate electrical connector according to claim 2, characterized in that: The insulating body includes a base, an upper end wall and a lower end wall extending forward from the base, the terminal channel is arranged on the base, the upper end wall and the lower end wall are arranged opposite to each other in the height direction, and the upper and lower end walls are both provided with a plurality of terminal grooves extending in the front-to-back direction, each of the terminal grooves and the corresponding terminal channel are connected front-to-back to accommodate the same conductive terminal.

4. The narrow pitch high frequency substrate electrical connector according to claim 3, characterized in that: The insulating body also has a pair of side end walls located on both sides of the upper and lower end walls in the longitudinal direction. The upper and lower end walls and the side end walls are spaced apart in the longitudinal direction to form a clearance space.

5. The narrow pitch high frequency substrate electrical connector according to claim 4, characterized in that: The shielding shell includes an upper shell part and a lower shell part which are arranged opposite to each other in the height direction, and the upper and lower shell parts are both provided with a pair of extension arms extending backwards, and the insulating body is provided with a limiting groove which is open forwards for the corresponding extension arm to be inserted and fixed, and the limiting groove is located directly behind the clearance space and is connected thereto.

6. The narrow pitch high frequency substrate electrical connector according to any one of claims 2 to 5, characterized in that: The contact arms of the first terminals are arranged in one row along the longitudinal direction, and the contact arms of the second terminals are arranged in another row along the longitudinal direction.

7. The narrow pitch high frequency substrate electrical connector according to claim 6, characterized in that: Each of the contact arms is provided with a contact portion protruding toward the inner side of the plug-in space in the height direction, and the contact portions of the first and second terminals are arranged opposite to each other in the height direction.

8. The narrow pitch high frequency substrate electrical connector according to any one of claims 2 to 5, characterized in that: In the height direction, the contact arm of the first terminal is located at the lower side of the contact arm of the second terminal, and the front end of the contact arm of the first terminal tends to approach the contact arm of the second terminal, and the front end of the contact arm of the second terminal also tends to approach the contact arm of the first terminal.

9. The narrow pitch high frequency substrate electrical connector according to claim 8, characterized in that: The first terminal is T-shaped and includes a first fixing portion extending backward and upward from the contact arm, a first stopping portion extending upward from a rear end of the first fixing portion, and the welding portion extending downward from a rear end of the first fixing portion.

10. The narrow pitch high frequency substrate electrical connector according to claim 8, characterized in that: The second terminal is L-shaped and includes a second fixing portion extending backward and downward from the contact arm, a second stopping portion extending downward from the second fixing portion, and the welding portion located at a lower side of the second stopping portion.

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