CN2440267Y - Electric connector with intensified shielding effect - Google Patents
Electric connector with intensified shielding effect Download PDFInfo
- Publication number
- CN2440267Y CN2440267Y CN00248313U CN00248313U CN2440267Y CN 2440267 Y CN2440267 Y CN 2440267Y CN 00248313 U CN00248313 U CN 00248313U CN 00248313 U CN00248313 U CN 00248313U CN 2440267 Y CN2440267 Y CN 2440267Y
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- terminal
- terminals
- signal
- contact
- ground
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- Expired - Lifetime
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- 230000000694 effects Effects 0.000 title description 11
- 239000000758 substrate Substances 0.000 claims description 31
- 230000014759 maintenance of location Effects 0.000 claims 12
- 230000004308 accommodation Effects 0.000 claims 2
- 230000013011 mating Effects 0.000 claims 2
- 238000003780 insertion Methods 0.000 abstract description 9
- 230000037431 insertion Effects 0.000 abstract description 9
- 238000013461 design Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
The utility model relates to an electric connector which comprises a long insulating casing body, wherein a central insertion slot is arranged along the longitudinal direction of the casing body, and both sides of the longitudinal direction of the casing body are respectively provide with a plurality of ranked terminal containing grooves. The utility model also comprises a plurality of signal terminals contained in each signal terminal containing groove and each signal terminal comprises a contact part, an elastic rump, a fixed part and a pin part. The connector also comprises a plurality of grounding terminals contained in each grounding terminal containing groove, each grounding terminal also comprises a contact part, an elastic rump, a fixed part and a pin part, wherein the size of at least one of the contact part, the elastic rump and the fixed part of each grounding terminal is slightly larger than that of the corresponding part of each signal terminal.
Description
The present invention relates to a high-density slot-type electrical connector, and more particularly to an electrical connector with enhanced shielding effect and capable of avoiding noise interference during signal transmission.
With the increasing demand of the computer industry for information processing quantity and processing speed, the trend of electronic connectors is toward high density. In the process of high density development, it is the first issue to solve the improper interference and noise resulted from high frequency transmission. In the known technology for eliminating such noise interference, two designs of grounding or shielding are generally adopted. In the grounding method, a grounding loop is usually designed in the system, and a grounding terminal capable of being connected with the grounding loop is installed between the signal terminals of the electrical connector, so as to achieve the purpose of grounding the whole system. In many high frequency transmission applications, in order to ensure an effective and reliable grounding effect, there is a design in which signal terminals and ground terminals are arranged in a one-to-one staggered manner, such as that disclosed in U.S. Pat. No. 5,026,292, the contents of which are incorporated herein by reference.
Although the above design can reduce the noise interference to some extent, the above design cannot completely and effectively solve the problem of signal interference in a higher speed and large signal transmission system. Moreover, due to the increase of the number of the ground terminals, the total of the positive clamping forces of the circuit traces (gold fingers) clamped between the terminals on the two sides of the edge of the circuit board is relatively increased, which causes difficulty in inserting and pulling out the circuit board.
In view of the above-mentioned prior art, the inventor of the present invention has not added a perfect part, and therefore, the present invention adds the application of the electrical shielding concept in the existing grounding design, so that the present invention has further improvement in the efficiency of preventing noise interference.
A second object of the present invention is to provide an electrical connector capable of reducing the insertion force of the circuit board and simultaneously maintaining the same positive clamping force between each pair of terminals and the circuit board.
According to the first feature of the present invention, there is provided a slot connector with enhanced shielding effect for inserting a circuit board, wherein the slot connector comprises a long insulating housing, a central slot is provided along the longitudinal direction of the slot connector, and a plurality of terminal accommodating grooves are provided in rows on both sides of the slot connector, wherein each row of the terminal accommodating grooves is formed in a manner that the signal terminal accommodating grooves and the ground terminal accommodating grooves are disposed in a staggered manner, and each signal terminal and ground terminal forms a corresponding relationship with the other row of the signal terminals and ground terminals. The slot connector further comprises a plurality of signal terminals, each signal terminal is respectively accommodated in each signal terminal accommodating groove, and each signal terminal comprises a contact part, an elastic arm part, a fixing part and a pin part. The slot connector further includes a plurality of ground terminals individually received in each of the ground terminal receiving grooves, and each of the ground terminals further includes a contact portion, an elastic arm portion, a fixing portion and a pin portion. At least one of the contact portion, the elastic arm portion and the fixing portion of each ground terminal has a profile dimension slightly larger than that of a corresponding portion of each signal terminal.
According to a second feature of the present invention, there is provided a slot connector capable of reducing the insertion force of a circuit board, comprising a long insulating housing, a central slot being formed along the longitudinal direction of the housing, and a plurality of terminal receiving grooves being formed in rows on both sides of the housing, wherein the plurality of terminal receiving grooves are formed in a manner such that the signal terminal receiving grooves and the ground terminal receiving grooves are disposed alternately, and each signal terminal and ground terminal forms a corresponding relationship with the signal terminal and the ground terminal of another row. The slot connector further comprises a plurality of signal terminals, which are respectively accommodated in each signal terminal accommodating groove, and each signal terminal comprises a contact part, an elastic arm part, a fixing part and a pin part. The socket connector further includes a plurality of ground terminals individually received in each of the ground terminal receiving grooves, and each of the ground terminals further includes a contact portion, an elastic arm portion, a fixing portion and a pin portion. The contact point position of the ground terminal with the circuit substrate is higher than that of the signal terminal with the circuit substrate, and when the circuit substrate is not inserted yet, the gap between the contact points of each pair of ground terminals with the circuit substrate is narrower than that between the contact points of each pair of signal terminals with the circuit board.
Utilize the utility model discloses a slot connector not only can strengthen the shielding effect to further improve the efficiency that prevents noise interference, and can reduce circuit substrate insertion force, can keep simultaneously to each pair to have roughly the same forward clamping-force between terminal and the circuit substrate.
Other objects, features and advantages of the present invention will be more fully understood from the following detailed description of the preferred embodiments taken in conjunction with the accompanying drawings.
Fig. 1 is a partial perspective view of the electrical connector of the present invention.
Fig. 2A is a plan view of the signal terminal of the present invention.
Fig. 2B is a plan view of the ground terminal of the present invention.
Fig. 3 is a cross-sectional view of the signal terminal of the present invention located in the terminal receiving groove.
Fig. 4 is a cross-sectional view of the ground terminal of the present invention located in the terminal receiving groove.
Fig. 5 is a schematic cross-sectional view of the signal terminal and the ground terminal of the present invention respectively disposed in the terminal accommodating groove, wherein the solid line represents the ground terminal, and the dotted line represents the signal terminal.
The present invention will be described in detail with reference to the following embodiments and accompanying drawings, and it should be noted that the examples shown in the drawings are only for illustrative purposes and are not intended to limit the present invention.
Referring to fig. 1, the electrical connector of the present invention includes a long insulating housing 10, and a central slot 20 is disposed in the longitudinal direction of the insulating housing 10, wherein the central slot 20 is used for receiving a board edge of a circuit board 100. In addition, a row of terminal receiving grooves is formed on each of the two longitudinal sides of the insulative housing 10, and each row of terminal receiving grooves is formed in such a manner that the signal terminal receiving grooves 12 and the ground terminal receiving grooves 14 are alternately arranged, and corresponds to the other row of terminal receiving grooves in a one-to-one correspondence. As can be clearly seen from the drawings, the size of the signal terminal accommodating groove 12 and the size of the ground terminal accommodating groove 14 of the electrical connector of the present invention are slightly different, because the size of the signal terminal of the present invention is slightly smaller than the size of the ground terminal, which will be explained in more detail below.
Referring to fig. 2A and fig. 2B, three-dimensional views of the signal terminal 30 and the ground terminal 40 of the present invention are respectively shown. As can be seen from the figure, each signal terminal 30 includes a contact portion 31, a resilient arm portion 32, a fixing portion 33 and a pin portion 34. The contact portion 31 includes a portion where the uppermost edge of the signal terminal 30 extends downward to approximately the contact point P contacting the circuit substrate 100, and the elastic arm portion 32 extends downward from the contact point P to approximately the fixing portion 33, wherein the elastic arm portion 32 is configured to provide elastic deformation when the circuit substrate 100 is inserted into the central slot 20, so as to provide a sufficient positive force of the contact portion 31 to form a stable and reliable contact with the board edge of the circuit substrate 100. The fixing portion 33 is used to firmly fix the signal terminal 30 in the signal terminal receiving slot 12, which is achieved by the interference fit between the fixing flanges 331 protruding upwards from two sides of the fixing portion 33 and the inner walls of the corresponding slots of the signal terminal receiving slot 12. In addition, a barb 332 is protruded from the outer side of each of the locking flanges 331 in a direction facing the inner wall of the signal terminal receiving groove 12, and the barb 332 is used for piercing the inner wall of the signal terminal receiving groove 12 when the signal terminal 30 is mounted in the signal terminal receiving groove 12, so as to prevent the signal terminal 30 from falling out of the signal terminal receiving groove 12. A pin 34 extends downward from the fixing portion 33 and is inserted into a corresponding through hole on the main circuit board (not shown) to be electrically connected to the circuit on the main circuit board.
Each ground terminal 40 further includes a contact portion 41, a resilient arm portion 42, a fixing portion 43 and a pin portion 44, wherein the fixing portion 43 further includes a locking flange 431 and a barb 432. Since the structure of the ground terminal 40 is substantially the same as that of the signal terminal 30, the structure and function of each component will not be described in detail.
As clearly shown in fig. 2A and 2B, the lateral width of the contact portion 41 of the ground terminal 40 is greater than the lateral width of the contact portion 31 of the signal terminal 30, and the overall lateral width of the fixing portion of the ground terminal 40 is also greater than the lateral width of the fixing portion 31 of the signal terminal 30, so that when the signal terminal 30 adjacent to the two ground terminals 40 transmits a high-frequency signal, the enlarged portions of the two ground terminals 40 respectively located in front of and behind the signal terminal 30 can provide a shielding effect, and thus the noise interference of the signal terminal 30 during signal transmission can be greatly reduced. It should be noted that the spirit of the present invention is to design some specific parts of the ground terminal to be slightly larger than the corresponding parts of the signal terminal, and the position and number of the specific parts are determined by the shape of the terminal, the application occasion and the assembling difficulty. Although the present embodiment is illustrated with the contact portion 41 and the fixing portion 43 of the ground terminal 40 being enlarged, the present invention is not limited thereto. In addition, as mentioned above, the ground terminal receiving groove 14 of the present invention is designed to be slightly larger than the signal terminal receiving groove 12, which not only considers that the size of some specific parts of the ground terminal 40 is slightly larger than the size of the signal terminal 30, but also provides the advantage of making the assembling personnel easily distinguish to avoid assembling errors. In addition, the size of the receiving groove 14 of the ground terminal is designed to be slightly larger, so that the flexibility of the design of the ground terminal for providing the shielding effect can be increased, and the shielding effect of the ground terminal is prevented from being damaged due to the fact that the size of the receiving groove 14 of the ground terminal is changed.
As described above, in the process of increasing the density of the electrical connector, in addition to the problem of the above-mentioned undesired interference, the problem of a large increase in the insertion force when the circuit board 100 is inserted into the central slot 20 due to the increase in the number of terminals is considered. In view of this problem, the present invention also provides a solution with considerable advantages.
Referring to fig. 3, 4 and 5, fig. 3 and 4 respectively show cross-sectional views of the signal terminal and the ground terminal of the present invention located in the terminal accommodating groove, and fig. 5 is a schematic cross-sectional view of the signal terminal and the ground terminal overlapped together. Referring to the drawings, if the vertical distance between the contact point P of the contact portion 31 of the signal terminal 30 and the bending point B of the elastic arm portion 32 is set to L, and the vertical distance between the contact point P of the contact portion 41 of the ground terminal 40 and the bending point B of the elastic arm portion 32 is set to L ', as can be clearly seen from fig. 3 and 4, the distance L' is greater than the distance L, that is, when the circuit board 100 is inserted into the central slot 20, the two sides of the board edge first make clamping contact with all the ground terminals of the electrical connector, and then, as the circuit board 100 is further inserted, it makes clamping contact with all the signal terminals of the electrical connector. Through the design, the circuit substrate is inserted in a two-section type stress mode, so that the stress of the circuit substrate during insertion can be reduced, and the situation that the circuit substrate is difficult to insert due to overlarge insertion force during one-time stress insertion is avoided.
However, it should be understood by those skilled in the art that the above-mentioned high-low contact design results in different stresses between different ends (due to different arm lengths L and L' of the deformation moment). In other words, if the stress between the terminals is different, after the circuit board is inserted and pulled for several times, the elastic fatigue degree between the terminals is different, which is very likely to cause some terminals to have poor contact. In order to solve the problem, the present invention proposes to achieve the effect of substantially the same forward clamping force between the different terminals to the board edge of the circuit board by controlling the displacement between the different terminals. In detail, referring to fig. 3 and 4 again, if the horizontal distance between the contact points P of the pair of signal terminals is set as G, and the horizontal distance between the contact points P of the pair of ground terminals is set as G ', it is obvious that the gap G between the pair of signal terminal contact points P of the present invention is larger than the gap G' between the pair of ground terminal contact points P, so that when the circuit substrate is inserted into the central slot of the electrical connector, the positive clamping forces of the signal terminals and the ground terminals to the plate edges can be substantially the same.
Referring to fig. 5, the ground terminal is shown by a solid line, and the signal terminal is shown by a dashed line, as can be seen from the figure, the contact portion 41 and the fixing portion 43 of the ground terminal 40 of the present invention can indeed shield the corresponding portion of the signal terminal 30 (i.e., the contact portion 31 and the fixing portion 33) in the assembled state, so as to achieve the effect of reducing noise interference. Furthermore, because the utility model discloses a ground terminal and signal terminal adopt the design mode of high low level contact, and in addition with the design that changes the contact point clearance between the different terminals in pairs, make the utility model discloses an electric connector not only can reduce circuit substrate's insertion force, and can also make signal terminal and ground terminal keep roughly the same forward clamping-force.
Although the present invention has been described in detail, those skilled in the art can make changes and modifications to the detailed structure of the invention without departing from the spirit and scope of the invention after reading the above description. However, various modifications and changes to the embodiments of the present invention are also intended to be included within the scope of the claims of the present invention.
Claims (16)
1. A socket connector for mating with a circuit substrate, comprising:
a long insulating shell, which is provided with a central slot along the lengthwise direction and is provided with a plurality of terminal accommodating grooves in rows at the two lengthwise sides respectively, wherein each row of the plurality of terminal accommodating grooves is formed in a way that signal terminal accommodating grooves and grounding terminal accommodating grooves are arranged in a staggered way, and each signal terminal and each grounding terminal are in corresponding relation with the signal terminals and the grounding terminals in the other row;
a plurality of signal terminals, each of which is individually accommodated in each of the signal terminal accommodating grooves and includes a contact portion, an elastic arm portion, a fixing portion and a pin portion;
a plurality of ground terminals individually accommodated in each ground terminal accommodation groove, each ground terminal further comprising a contact portion, an elastic arm portion, a fixing portion and a pin portion; wherein,
at least one of the contact portion, the elastic arm portion and the fixing portion of each ground terminal has a profile dimension slightly larger than that of a corresponding portion of each signal terminal.
2. The socket connector of claim 1, wherein the contact portions of the ground terminals have a larger profile dimension than the contact portions of the signal terminals.
3. The socket connector of claim 1, wherein the ground terminal retention portion has a profile dimension greater than a profile dimension of the signal terminal retention portion.
4. The socket connector of claim 1, wherein the contact and retention portions of the ground terminals each have a profile dimension that is greater than the profile dimensions of the contact and retention portions of the signal terminals.
5. The socket connector of claim 1, wherein the ground terminal is located at a higher contact point with the circuit substrate than the signal terminal is located at with the circuit substrate.
6. The socket connector of claim 5, wherein the gap between the contact points of each pair of ground terminals contacting the circuit substrate is narrower than the gap between the contact points of each pair of signal terminals contacting the circuit board when the circuit substrate is not inserted.
7. The socket connector of claim 1, wherein the signal terminals are located at a higher contact point with the circuit substrate than the ground terminals.
8. The socket connector of claim 7, wherein the gap between the contact points of each pair of signal terminals with the circuit substrate is narrower than the gap between the contact points of each pair of ground terminals with the circuit board when the circuit substrate is not inserted.
9. The slot connector of claim 1, wherein the fixing portion of each terminal includes catching flanges protruding from both sides of the fixing portion, respectively, and at least one barb protruding in a direction facing an inner wall of the terminal capacity hole at an outer side of each catching flange.
10. A socket connector for mating with a circuit substrate, comprising:
a long insulating shell, which is provided with a central slot along the lengthwise direction and is provided with a plurality of terminal accommodating grooves in rows at the two lengthwise sides respectively, wherein each row of the plurality of terminal accommodating grooves is formed in a way that signal terminal accommodating grooves and grounding terminal accommodating grooves are arranged in a staggered way, and each signal terminal and each grounding terminal are in corresponding relation with the signal terminals and the grounding terminals in the other row;
a plurality of signal terminals, each of which is individually accommodated in each of the signal terminal accommodating grooves and includes a contact portion, an elastic arm portion, a fixing portion and a pin portion;
a plurality of ground terminals individually accommodated in each ground terminal accommodation groove, each ground terminal further comprising a contact portion-elastic arm portion, a fixing portion and a pin portion; wherein,
the contact point position of the ground terminal with the circuit substrate is higher than that of the signal terminal with the circuit substrate, and when the circuit substrate is not inserted yet, the gap between the contact points of each pair of ground terminals with the circuit substrate is narrower than that between the contact points of each pair of signal terminals with the circuit board.
11. The socket connector of claim 10, wherein the contact points of the signal terminals with the circuit substrate are higher than the contact points of the ground terminals with the circuit substrate, and wherein the gap between the contact points of each pair of signal terminals with the circuit substrate is narrower than the gap between the contact points of each pair of ground terminals with the circuit board when the circuit substrate is not inserted.
12. The socket connector as claimed in claim 10 or 11, wherein at least one of the contact portion, the resilient arm portion and the fixing portion of each ground terminal has a profile slightly larger than a profile of a corresponding portion of each signal terminal.
13. The socket connector of claim 12, wherein the contact portions of the ground terminals have a larger profile than the contact portions of the signal terminals.
14. The socket connector of claim 12, wherein the ground terminal retention portions have a profile dimension greater than the signal terminal retention portions.
15. The socket connector of claim 12, wherein the contact and retention portions of the ground terminals each have a profile dimension that is greater than the profile dimensions of the contact and retention portions of the signal terminals.
16. The socket connector of claim 10, wherein the retention portion of each terminal includes a retention flange projecting from each side of the retention portion, and at least one barb projecting outwardly of each retention flange in a direction toward the inner wall of the terminal-receiving bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00248313U CN2440267Y (en) | 2000-09-04 | 2000-09-04 | Electric connector with intensified shielding effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00248313U CN2440267Y (en) | 2000-09-04 | 2000-09-04 | Electric connector with intensified shielding effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2440267Y true CN2440267Y (en) | 2001-07-25 |
Family
ID=33606989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00248313U Expired - Lifetime CN2440267Y (en) | 2000-09-04 | 2000-09-04 | Electric connector with intensified shielding effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2440267Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101958475A (en) * | 2010-03-24 | 2011-01-26 | 深圳市德仓科技有限公司 | Card edge connector |
| CN102437455A (en) * | 2010-09-29 | 2012-05-02 | 泰科电子(上海)有限公司 | Electrical connector |
| CN101816102B (en) * | 2007-07-30 | 2013-03-20 | 莫列斯公司 | Electrical connector for a daughter card |
| CN111817055A (en) * | 2019-04-04 | 2020-10-23 | 丰田自动车株式会社 | Connector structure |
-
2000
- 2000-09-04 CN CN00248313U patent/CN2440267Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101816102B (en) * | 2007-07-30 | 2013-03-20 | 莫列斯公司 | Electrical connector for a daughter card |
| CN101958475A (en) * | 2010-03-24 | 2011-01-26 | 深圳市德仓科技有限公司 | Card edge connector |
| CN101958475B (en) * | 2010-03-24 | 2013-01-16 | 深圳市德仓科技有限公司 | Card edge connector |
| CN102437455A (en) * | 2010-09-29 | 2012-05-02 | 泰科电子(上海)有限公司 | Electrical connector |
| CN102437455B (en) * | 2010-09-29 | 2013-09-11 | 泰科电子(上海)有限公司 | Electrical connector |
| CN111817055A (en) * | 2019-04-04 | 2020-10-23 | 丰田自动车株式会社 | Connector structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIAZE TERMINALS INDUSTRY CO., LTD. Free format text: FORMER OWNER: HUAQI ELECTRONIC INDUSTRIAL STOCK CO., LTD. Effective date: 20090731 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090731 Address after: No. 15, Wu Xun street, Keelung City, Taiwan Province, zip code: Co-patentee after: Pegatron Corporation Patentee after: Industrial Limited by Share Ltd of the Jia Ze terminal Address before: No. 26-1 Xinghua village, three sesame Township, Taipei County, Taiwan province: Patentee before: Huaqi Electronic Industry Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20100904 Granted publication date: 20010725 |