CN212648546U - Terminal structure of electric connector - Google Patents
Terminal structure of electric connector Download PDFInfo
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- CN212648546U CN212648546U CN202021778236.5U CN202021778236U CN212648546U CN 212648546 U CN212648546 U CN 212648546U CN 202021778236 U CN202021778236 U CN 202021778236U CN 212648546 U CN212648546 U CN 212648546U
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- 230000037431 insertion Effects 0.000 abstract description 26
- 230000005540 biological transmission Effects 0.000 abstract description 11
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- 230000008054 signal transmission Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
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- 230000009471 action Effects 0.000 description 3
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Abstract
The utility model relates to a terminal structure of an electric connector, which mainly comprises a plurality of plug terminals and a plurality of butt terminals correspondingly combined with the plug terminals respectively, and defines at least one insertion inclined plane part between the insertion welding part and the insertion fixing part, and at least one butt-joint inclined plane part between the butt-joint welding part and the butt-joint fixing part, the two ends of the insertion inclined plane part are respectively an insertion convex edge line and an insertion concave edge line, and the two ends of the butt joint inclined plane part are respectively an insertion convex edge line and an insertion concave edge line, so that the transmission characteristic of a high-frequency signal is optimized by utilizing shape design that the width of the butt joint fixing part is larger than or equal to the width of the insertion contact part, the width of the butt joint welding part is equal to the width of the insertion welding part, the width of the butt joint fixing part is larger than the width of the butt joint welding part, and the width of the insertion fixing part is larger than the width of the insertion welding part.
Description
Technical Field
The present invention relates to an electrical connector, and more particularly to a terminal structure of an electrical connector capable of avoiding scattering of high frequency signals and having a better radiation suppression effect.
Background
Board-to-Board Connectors (Board-to-Board Connectors) are a type of connector that connects parallel circuit boards. The board-to-board connector is a connector product with the strongest transmission capability in all connector product types at present, and is mainly applied to industries such as power systems, communication networks, financial manufacturing, elevators, industrial automation, medical equipment, office equipment, household appliances, military manufacturing and the like. With the development of science and technology, the market has higher and higher requirements on board-to-board connectors, and the transmission performance of products is required to be further improved while the size is further miniaturized.
For example, the high functionality of mobile devices leads to a higher packaging density of electronic components on a circuit board, and thus the number of contact terminal arrangements constituting a connector tends to increase, and the width and pitch of the contact terminal arrangements become narrower in consideration of the size, so that the electronic components are affected by the radiation of noise and Electromagnetic Interference (EMI). In order to ensure the stable and normal signal transmission of the entire connector on the circuit board, most of the electrical connectors nowadays are provided with a grounding member to eliminate the internal electromagnetic interference (EMI) in the grounding loop on the circuit board.
However, the following problems and disadvantages are still to be improved after the actual use of the board-to-board connector described above:
in signal transmission, especially for high frequency signals, the grounding member cannot completely eliminate electromagnetic interference, and even scattering of the high frequency signal occurs, which may cause insertion loss and other factors affecting the decibel (db) value of the connector.
Therefore, how to solve the above conventional problems and deficiencies is one of the ways in which the authors and related manufacturers in this industry desire to research and improve.
Therefore, in view of the above-mentioned shortcomings, the inventor of the present invention has searched related information, evaluated and considered in many ways, and tried and modified continuously with years of experience accumulated in the industry, and designed the terminal structure of the electrical connector which can avoid scattering of high frequency signals and has better radiation suppression effect.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at: the profile of the plug terminal and the butt terminal is redesigned to control the electromagnetic interference (EMI) and decibel value (DB) during the transmission of high-frequency signals by utilizing the change of the shape so as to optimize the transmission quality of the high-frequency signals.
To achieve the above object, the present invention provides a terminal structure of an electrical connector, which is a board-to-board connector, comprising:
each plug terminal comprises a plug welding part, a plug fixing part formed at one end of the plug welding part, a plug elastic part formed at one end of the plug fixing part in a bending way, and a plug contact part formed at one end of the plug elastic part in an extending way;
at least one inserting inclined plane part defined between the inserting welding part and the inserting fixing part, wherein an inserting convex ridge line is arranged between the side wall of the inserting inclined plane part and the side wall of the inserting fixing part, and an inserting concave ridge line is arranged between the side wall of the inserting inclined plane part and the side wall of the inserting welding part;
a plurality of butt-joint terminals respectively combined with the plug-in terminals correspondingly, each butt-joint terminal comprises a butt-joint welding part, a butt-joint fixing part formed at one end of the butt-joint welding part, a butt-joint connecting part bent and formed at one end of the butt-joint fixing part, a butt-joint contact fixing part extending and formed at one end of the butt-joint connecting part, a butt-joint groove part formed at one end of the butt-joint contact fixing part and a butt-joint elastic part bent and formed at one end of the butt-joint groove part;
at least one butt-joint inclined plane part defined between the butt-joint welding part and the butt-joint fixing part, wherein a butt-joint convex ridge line is arranged between the side wall of the butt-joint inclined plane part and the side wall of the butt-joint fixing part, and a butt-joint concave ridge line is arranged between the side wall of the butt-joint inclined plane part and the side wall of the butt-joint welding part;
the width of the butt joint fixing part is larger than or equal to that of the plug contact part, the width of the butt joint welding part is equal to that of the plug welding part, the width of the butt joint fixing part is larger than that of the butt joint welding part, and the width of the plug fixing part is larger than that of the plug welding part.
Furthermore, the plug terminal is arranged on a plug colloid in a coating mode through the plug fixing part, and the butt joint terminal is arranged on a butt joint colloid in a coating mode through the butt joint fixing part.
Furthermore, an inserting shielding frame is arranged around the outer ring of the inserting colloid, and a butt-joint shielding frame is arranged around the outer ring of the butt-joint colloid.
Furthermore, the inserting shielding frame is provided with at least one buckling part, and the butt-joint shielding frame is provided with at least one abutting part correspondingly combined with the buckling part.
Furthermore, the butt joint colloid is internally provided with an accommodating area for completely accommodating the splicing shielding frame.
Furthermore, the docking colloid is provided with at least one docking slot part, the docking shielding frame is provided with at least one docking positioning plug-in which is correspondingly combined with the docking slot part, the docking colloid is provided with at least one plugging slot part, and the plugging shielding frame is provided with at least one plugging positioning plug-in which is correspondingly combined with the plugging slot part.
Furthermore, a plurality of limiting pins are arranged on the inserting shielding frame, and the outer side of the abutting joint colloid is limited.
Furthermore, the side wall of the butt joint groove part is provided with at least one groove inclined plane part.
Further, a width of the abutting groove portion on a side adjacent to the abutting contact fixing portion is larger than a width of the abutting groove portion on a side adjacent to the abutting elastic portion.
Furthermore, one end of the side wall of the groove inclined plane part is defined with a groove convex ridge line, and the other end of the side wall of the groove inclined plane part is defined with a groove concave ridge line.
By the above technique, the Electromagnetic Interference of the board-to-board connector can not be completely eliminated and the scattering of the high frequency signal can be avoided, the utility model discloses the plug-in terminal and the shape of the butt-joint terminal of the board-to-board connector are redesigned, the problem of scattering of the high frequency signal during the transmission of the plug-in terminal is reduced by using the plug-in inclined plane part with the plug-in convex ridge line and the plug-in concave ridge line, similarly, the problem of scattering of the high frequency signal during the transmission of the butt-joint terminal is reduced by using the butt-joint inclined plane part with the butt-joint convex ridge line and the butt-joint concave ridge line, and the Electromagnetic Interference (EMI) is suppressed by the width of the butt-joint welding part being equal to the width of the plug-joint welding part, meanwhile, the width of the butt-joint fixing part is greater than the width of the butt-joint welding part, and the width of the plug-joint fixing part, And the width of the butt joint fixing part is larger than or equal to that of the plug contact part, so that a DB value in the high-frequency signal transmission process is maintained, and the signal distortion degree is reduced.
Drawings
FIG. 1 is a perspective view of a preferred embodiment of the present invention;
fig. 2 is an exploded view of the preferred embodiment of the present invention;
fig. 3 is a cross-sectional view taken along line a-a of fig. 1 in accordance with a preferred embodiment of the present invention;
fig. 4 is a cross-sectional view taken along line B-B of fig. 2 in accordance with a preferred embodiment of the present invention;
fig. 5 is a schematic structural diagram (one) of the plug terminal and the mating terminal according to the preferred embodiment of the present invention;
fig. 6 is a schematic structural diagram (ii) of the plug terminal and the mating terminal according to the preferred embodiment of the present invention.
Fig. 7 is a schematic diagram of the detection according to the preferred embodiment of the present invention.
Description of the symbols:
100. plug connector
Insert welding part 11
Plugging fixing part 12
Insertion elastic part 13
15. the insertion inclined plane part
151. inserting convex ridge line
152. concave ridge of plugging
Inserting colloid
21. of the insertion slot
Inserting shielding frame
31. plug-in positioning plug-in
32. the fastening part
33. limiting foot
.4 butt-joint terminal
41. butt weld
42 butt joint fixing part
43. butt joint
44 butt contact fixing part
45 butt joint groove part
451 groove slope section
4511 groove ridge
4512 groove ridge
46. abutting elastic part
47 butting inclined plane parts
471 butt joint convex ridge line
472. butt joint concave ridge
.5 docking colloid
51 butt joint clamping groove part
52. the accommodating area
6. a butt-joint shielding frame
61. a butt-joint positioning plug-in
An abutment section 62
Width W1, W2, W3, W4.
Detailed Description
To achieve the above objects and advantages, the preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1 to 7, there are shown a perspective view, a schematic view (ii) of a structure of a mating terminal, and a schematic view of a detection according to a preferred embodiment of the present invention, as can be clearly seen from the drawings, an electrical connector of the present invention is a board-to-board connector, which mainly includes:
a plurality of plug terminals 1, each plug terminal 1 including a plug welding portion 11, a plug fixing portion 12 formed at one end of the plug welding portion 11, a plug elastic portion 13 bent at one end of the plug fixing portion 12, and a plug contact portion 14 extending at one end of the plug elastic portion 13;
at least one insertion inclined plane part 15 defined between the insertion welding part 11 and the insertion fixing part 12, wherein an insertion convex ridge line 151 is arranged between the side wall of the insertion inclined plane part 15 and the side wall of the insertion fixing part 12, and an insertion concave ridge line 152 is arranged between the side wall of the insertion inclined plane part 15 and the side wall of the insertion welding part 11;
a plurality of butt terminals 4 respectively combined with the plug terminals 1, each butt terminal 4 including a butt welding portion 41, a butt fixing portion 42 formed at one end of the butt welding portion 41, a butt connection portion 43 formed at one end of the butt fixing portion 42 by bending, a butt contact fixing portion 44 formed at one end of the butt connection portion 43 by extending, a butt groove portion 45 formed at one end of the butt contact fixing portion 44, and a butt elastic portion 46 formed at one end of the butt groove portion 45 by bending;
at least one abutting inclined surface portion 47 defined between the abutting welding portion 41 and the abutting fixing portion 42, wherein an abutting convex ridge 471 is formed between the side wall of the abutting inclined surface portion 47 and the side wall of the abutting fixing portion 42, and an abutting concave ridge 472 is formed between the side wall of the abutting inclined surface portion 47 and the side wall of the abutting welding portion 41;
at least one groove slope part 451 defined on a sidewall of the docking groove part 45, one end of the sidewall of the groove slope part 451 defining a groove ridge line 4511, and the other end of the sidewall of the groove slope part 451 defining a groove concave ridge line 4512;
the plug terminals 1 are covered on the plug colloid 2 through the plug fixing part 12, and the plug colloid 2 is provided with at least one plug clamping groove part 21;
a docking colloid 5, the docking terminals 4 are covered and arranged on the docking colloid 5 through the docking fixing part 42, the docking colloid 5 is provided with at least one docking clamping groove part 51, and the docking colloid 5 is internally provided with an accommodating area 52 for completely accommodating the following docking shielding frame 3;
the inserting shielding frame 3 is arranged outside the inserting colloid 2 in a surrounding way, and the inserting shielding frame 3 is provided with at least one clamping part 32, at least one inserting positioning plug-in piece 31 correspondingly combined with the inserting clamping groove part 21 and a plurality of limiting pins 33 for limiting the outer side of the butting colloid 5; and
a docking shielding frame 6 surrounding the docking colloid 5, wherein the docking shielding frame 6 has at least one docking positioning plug-in 61 correspondingly combined with the docking slot 51 and at least one docking portion 62 correspondingly combined with the fastening portion 32.
With the above description, the structure of the present technology can be understood, and according to the corresponding coordination of the structure, the advantages of avoiding the scattering of the high frequency signal and improving the radiation suppression effect can be further obtained, and the detailed description will be provided below.
When the above components are combined, as can be clearly seen from the figure, the electrical connector of the present invention is a board-to-board connector, and therefore includes a plug connector 100 and a docking connector 400, the plug connector 100 is composed of a plurality of plug terminals 1, a plug colloid 2 and at least one plug shielding frame 3, and the docking connector 400 is composed of a plurality of docking terminals 4, a docking colloid 5 and at least one docking shielding frame 6, the combination of the plug colloid 2 and the docking shielding frame 3 is formed by the action of the plug shielding frame 3 covering the plug colloid 2, and the plug positioning plug-in 31 of the plug shielding frame 3 is inserted into the plug slot portion 21 of the plug colloid 2 for positioning, and similarly, the combination of the docking colloid 5 and the docking shielding frame 6 is formed by the action of the docking shielding frame 6 covering the docking colloid 5, and the docking positioning plug-in 61 of the docking shielding frame 6 is inserted into the docking slot portion 51 of the docking colloid 5 for positioning, when the plug connector 100 is combined with the mating connector 400, in addition to the combination of the plug terminal 1 and the mating terminal 4, the accommodating area 52 of the mating colloid 5 is utilized to completely accommodate the plug shielding frame 3 and the plug colloid 2 on the inner side thereof, and the limiting pin 33 protruding downward from the plug shielding frame 3 is limited on the outer side of the mating colloid 5, and meanwhile, the convex block-shaped buckling part 32 on the plug shielding frame 3 is utilized to tightly press the mating part 62 on the mating shielding frame 6, wherein the adjacent side of the buckling part 32 and the mating part 62 is an inclined surface, so that the plugging action is smoother, and therefore, when the plug connector 100 is combined with the mating connector 400, multiple positioning or limiting means are provided, and a stable combination state is provided.
It is worth mentioning that, an inserting inclined plane part 15 is provided between the inserting welding part 11 and the inserting fixing part 12 of the inserting terminal 1, as shown in fig. 5, the inserting inclined plane part 15 is formed gradually from bottom to top, and the joint of the inserting inclined plane part 15, the inserting fixing part 12 and the inserting welding part 11 is not a smooth round angle and has no convex contour, but a inserting convex edge line 151 is provided between the sidewall of the inserting inclined plane part 15 and the sidewall of the inserting fixing part 12, and a inserting concave edge line 152 is provided between the sidewall of the inserting inclined plane part 15 and the sidewall of the inserting welding part 11, similarly, the butt inclined plane part 47 is formed gradually from top to bottom, and the joint of the butt inclined plane part 47, the butt fixing part 42 and the butt welding part 41 is not a smooth round angle and has no convex contour, but a butt convex edge line 471, or the like is provided between the sidewall of the butt inclined plane part 47 and the sidewall of the butt, And a butt concave ridge 472 (defined as a line formed by intersecting two surfaces of an object) between the side wall of the butt inclined surface portion 47 and the side wall of the butt welded portion 41. With this special design, the width W1 of the docking fixing portion 42 is greater than the width W3 of the docking welding portion 41, the width W2 of the docking fixing portion 12 is greater than the width W4 of the docking welding portion 11, so as to reduce the scattering problem of the high frequency signal when the plug terminal 1 and the docking terminal 4 transmit, and the width W3 of the docking welding portion 41 is equal to the width W4 of the docking welding portion 11, so as to suppress Electromagnetic Interference (EMI), and not limit the use of the plug terminal 1 as a signal output or the docking terminal 4 as a signal output, and simultaneously maintain the DB value during the transmission of the high frequency signal in cooperation with the width W1 of the docking fixing portion 42 being greater than the width W3 of the docking welding portion 41, the width W2 of the docking fixing portion 12 being greater than the width W4 of the docking welding portion 11, and the width W1 of the docking fixing portion 42 being greater than or equal to the width W2 of the plug contact portion 14, and the signal distortion degree is reduced.
As shown in fig. 6, the side wall of the abutting groove portion 45 is designed with a groove slope portion 451, so that the abutting groove portion 45 is tapered when extending from one side of the abutting contact fixing portion 44 to one side of the abutting elastic portion 46, and has a groove ridge line 4511 and a groove concave ridge line 4512, similarly, the joint of the two ends of the groove slope portion 451 is not a smooth round corner and has no convex contour. Thereby helping to reduce signal distortion.
In addition, the reason why the change of the terminal widths W1, W2, W3 and W4 can optimize the high frequency signal transmission product is as follows as a result of "redesigning the outer contours of the mating terminal 4 and the mating terminal 1 to control the electromagnetic interference (EMI) and the decibel value (DB) during the high frequency signal transmission by changing the shapes of the terminals":
according to the basic theory of high frequency transmission lines, the most important task of high frequency connectors is to play as the mating parts and to transmit high frequency signals, so in addition to the mechanical structure must meet the standards of the association, the shape, bending angle, material thickness and width of the terminals are the main factors affecting the high frequency characteristics, wherein the most important factor for Electromagnetic Compatibility (EMC) is the common mode voltage and current, the common mode is caused by the impedance mismatch of the terminals, when the terminals are not completely matched, the load end cannot receive the full power of the signal source, and the Loss part of the signal transmission is called reflection Loss (Return Loss, RL), which is defined as: RL = -20 log | Γ | (dB), where Γ is the reflection coefficient (reflection coefficient), which is the ratio of the reflected voltage wave amplitude to the incident voltage wave amplitude, whereas if the load matches the transmission line Zload = Z0, the reflection coefficient is zero. From the above basic theory of high frequency transmission lines, the importance of impedance for signal transmission is that when high frequency signals are transmitted through the electrical connector, but impedance matching cannot be achieved, the signals will be lost.
And the utility model discloses to the settlement foundation of terminal width, utilize the matrix of high-frequency electromagnetic field simulation analysis software to solve in-process and use the algorithm, the solver can disturb the field of solving in the space to extract the change of S parameter to these disturbances. When the method is used, the influence of the variables on the S parameter can be quickly determined to be the largest, namely, the variables with more optimized performance benchmark can be selected. In addition to displaying sensitivity information, the sequential nonlinear programming optimization algorithm uses design points, and calculated derivatives, to obtain an optimal design faster than when using labels. According to the analysis results using the electromagnetic simulation analyzer, it was found that the resistance value was 51 Ω when the width W1 was greater than the width W3 or the width W2 was greater than the width W4, and the result was superior to the resistance value (52.6 Ω) when the width W1 was equal to the width W3 and the width W2 was equal to the width W4.
Referring to fig. 7, the actual measurement results of the plug terminal 1 or the butt terminal 4 of the present invention are measured by a network analyzer for signal reflection (upper left meter), standing-wave ratio (upper middle meter), influence degree of linearity or capacitance (upper right meter), loss of input and output terminals (lower left meter), near-end crosstalk (lower middle meter), and remote crosstalk (lower right meter).
However, the above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, so that the simple modifications and equivalent structural changes made by the contents of the specification and drawings should be included in the scope of the present invention.
Claims (10)
1. A terminal structure of an electrical connector, the electrical connector being a board-to-board connector, comprising:
each plug terminal comprises a plug welding part, a plug fixing part formed at one end of the plug welding part, a plug elastic part formed at one end of the plug fixing part in a bending way, and a plug contact part formed at one end of the plug elastic part in an extending way;
at least one inserting inclined plane part defined between the inserting welding part and the inserting fixing part, wherein an inserting convex ridge line is arranged between the side wall of the inserting inclined plane part and the side wall of the inserting fixing part, and an inserting concave ridge line is arranged between the side wall of the inserting inclined plane part and the side wall of the inserting welding part;
a plurality of butt-joint terminals respectively combined with the plug-in terminals correspondingly, each butt-joint terminal comprises a butt-joint welding part, a butt-joint fixing part formed at one end of the butt-joint welding part, a butt-joint connecting part bent and formed at one end of the butt-joint fixing part, a butt-joint contact fixing part extending and formed at one end of the butt-joint connecting part, a butt-joint groove part formed at one end of the butt-joint contact fixing part and a butt-joint elastic part bent and formed at one end of the butt-joint groove part;
at least one butt-joint inclined plane part defined between the butt-joint welding part and the butt-joint fixing part, wherein a butt-joint convex ridge line is arranged between the side wall of the butt-joint inclined plane part and the side wall of the butt-joint fixing part, and a butt-joint concave ridge line is arranged between the side wall of the butt-joint inclined plane part and the side wall of the butt-joint welding part;
the width of the butt joint fixing part is larger than or equal to that of the plug contact part, the width of the butt joint welding part is equal to that of the plug welding part, the width of the butt joint fixing part is larger than that of the butt joint welding part, and the width of the plug fixing part is larger than that of the plug welding part.
2. The terminal structure of an electrical connector according to claim 1, wherein: the plug terminal is arranged on a plug colloid in a coating mode through the plug fixing part, and the butt joint terminal is arranged on a butt joint colloid in a coating mode through the butt joint fixing part.
3. The terminal structure of an electrical connector according to claim 2, wherein: the outer ring of the splicing colloid is provided with a splicing shielding frame in a winding way, and the outer ring of the butt joint colloid is provided with a butt joint shielding frame in a winding way.
4. The terminal structure of an electrical connector according to claim 3, wherein: the splicing shielding frame is provided with at least one buckling part, and the butt-joint shielding frame is provided with at least one butting part correspondingly combined with the buckling part.
5. The terminal structure of an electrical connector according to claim 3, wherein: the butt joint colloid is internally provided with an accommodating area for completely accommodating the splicing shielding frame.
6. The terminal structure of an electrical connector according to claim 3, wherein: the butt joint colloid is provided with at least one butt joint clamping groove part, the butt joint shielding frame is provided with at least one butt joint positioning plug-in unit correspondingly combined with the butt joint clamping groove part, the plug joint colloid is provided with at least one plug joint clamping groove part, and the plug joint shielding frame is provided with at least one plug joint positioning plug-in unit correspondingly combined with the plug joint clamping groove part.
7. The terminal structure of an electrical connector according to claim 3, wherein: the splicing shielding frame is provided with a plurality of limiting pins for limiting the outer side of the butting colloid.
8. The terminal structure of an electrical connector according to claim 1, wherein: the side wall of the butt joint groove part is provided with at least one groove inclined plane part.
9. The terminal structure of an electrical connector according to claim 8, wherein: the width of the abutting groove portion on the side adjacent to the abutting contact fixing portion is larger than the width of the abutting groove portion on the side adjacent to the abutting elastic portion.
10. The terminal structure of an electrical connector according to claim 8, wherein: one end of the side wall of the groove inclined plane part is defined with a groove convex ridge line, and the other end of the side wall of the groove inclined plane part is defined with a groove concave ridge line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021778236.5U CN212648546U (en) | 2020-08-24 | 2020-08-24 | Terminal structure of electric connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021778236.5U CN212648546U (en) | 2020-08-24 | 2020-08-24 | Terminal structure of electric connector |
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| CN212648546U true CN212648546U (en) | 2021-03-02 |
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| CN202021778236.5U Active CN212648546U (en) | 2020-08-24 | 2020-08-24 | Terminal structure of electric connector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114094371A (en) * | 2020-08-24 | 2022-02-25 | 岱炜科技股份有限公司 | Terminal structure of electric connector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114094371A (en) * | 2020-08-24 | 2022-02-25 | 岱炜科技股份有限公司 | Terminal structure of electric connector |
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