CN2899172Y

CN2899172Y - RCA connector with EMI shielded elastic wafer

Info

Publication number: CN2899172Y
Application number: CN 200620039833
Authority: CN
Inventors: 林启仁
Original assignee: Mitac International Corp
Current assignee: Huanda Computer Shanghai Co Ltd; Mitac International Corp
Priority date: 2006-02-28
Filing date: 2006-02-28
Publication date: 2007-05-09
Anticipated expiration: 2016-02-28

Abstract

The utility model discloses a RCA connector with an EMI shielded elastic wafer, comprising an isolating body, a metal cover, a plurality of signal terminals and at least one grounding terminal, wherein, the signal terminals and the grounding terminal are respectively held and fixed in a terminal groove of the isolating body, the metal cover encloses the outer surface of the isolating body, and a metal spring blade is also provided on the isolating body, meanwhile, one end of the metal spring blade contacts the metal cover and the grounding terminal, and the other end of the metal spring blade extrudes out of the isolating body to form a plastic blocking part and to make the metal spring blade contact the outer grounding device, so a grounding circuit works.

Description

RCA connector with EMI shielding shell fragment

[technical field]

The utility model relates to a kind of electric power connector, relates in particular to the RCA connector of a kind of EMI of having (ElectroMagnetic Interference, electromagnetic interference) shielding shell fragment.

[background technology]

Because the digital household appliances product is flourish, many products must form a kind of novel combined type information household appliances series products with the function of info class product in conjunction with household appliances.But contrast the requirement of original electromagnetic compatibility standard, the limit value that the electromagnetism wave amplitude of simple household appliances product is penetrated is wanted loose 10dB with respect to the limit value of info class product.And according to existing electromagnetic compatibility standard, combined type information household appliances series products should meet the limit value requirement that the electromagnetism wave amplitude of household appliances product and info class product is penetrated simultaneously, could freely peddle on market by the authentication of relevant electromagnetic compatibility.

Therefore, (RCA is Radio Corporation of America to old-fashioned RCA connector, the Radio Corporation of America; The RCA connector is that the wiring terminal of the lead wiring of the non-equilibrium or coaxial-type of by RCA exploitation connects standard, be used for most stereo equipments and video tape recorder, Voice ﹠ Video I/O) structural design mostly be difficult to the test request of the limit value penetrated by the electromagnetism wave amplitude of info class because the limit value that the electromagnetism wave amplitude of info class product is penetrated is than the strict 10dB of limit value of simple household appliances product.And this type of RCA connector is applied to the port of audio-visual I/O more, and the analog signal of video and audio frequency is very easy to be subjected to interference, the coupling of digital noise again, thus the problem that causes more serious electromagnetism wave amplitude to penetrate.

Most at present RCA connectors does not all prevent the structural design of EMI, and this tends to cause more serious electromagnetism wave amplitude to penetrate problem.And minority RCA connector has EMI shielding construction design, but can't directly contact with the metal cabinet, causes ground connection discontinuous and shield effectiveness is significantly reduced, even does not play any shielding action.Be to solve the discontinuous problem of ground connection, some have the design that has increased screw hole on the RCA connector of shielding construction design, utilize screw with itself and Machine case lock together.Though this design has solved the bonding problem,, cause following shortcoming because must fix with screw in addition: the firstth, the cost of increase product; The secondth, must increase extra lock screw operation during the product assembling, influence speed of production and increase human cost.In addition, the fixed RCA connector of this type of screw, it is that mode with " point " contacts with the product cabinet, and impedance ground is higher, and too high impedance ground can significantly reduce the shielding electromagnetic waves effect.And owing to can't contact,, be easy to allow the noise that disturbs enter circuit in the printed circuit board (PCB) if there is extraneous electronic noise to disturb with metal chassis is complete, cause misoperation or the damage that can not expect.

[utility model content]

The purpose of this utility model is to provide a kind of RCA connector of the EMI of having shielding shell fragment, it has continuously, the structure of large contact surface ground connection, can increase substantially the electromagnetic shielding effect of product integral body, and need not additionally increase the cost of screw, do not need to increase extra assembling procedure and manpower during the product assembling yet, thereby can enhance productivity and reduce cost.

For achieving the above object, the utility model adopts following technical scheme: a kind of RCA connector of the EMI of having shielding shell fragment, it includes insulating body, metal shell, some signal terminals and at least one earth terminal, this insulating body is provided with the plug insertion of jack for pairing, near jack, offer the plurality of terminals groove, aforementioned signal terminal and earth terminal accommodate respectively be fixed in these terminal grooves with insert this jack in plug contact, metal shell is coated at least one outer surface of insulating body, wherein, on insulating body, also be provided with metal clips, one end of this metal clips contacts with aforementioned metal housing and earth terminal respectively, and the other end then extends insulating body and forms an elasticity abutting part to contact and the conducting ground path with the external ground device outward.

In the aforementioned RCA connector provided by the utility model, metal clips is to combine with metal shell and be connected with the earth terminal of connector.

Compared with prior art, the utility model adopts the project organization of metal clips, make the metal shell of the metal shell of RCA connector by shell fragment contact cabinet, reach the continuity of ground connection, and utilize the shell fragment member to replace the fixed RCA connector of existing screw, the area that connector is contacted with casing increases, contact between the two is changed into the contact of " line " even " face " formula by " point " formula, can reduce impedance ground, increase substantially the electromagnetic shielding effect of product integral body, also need not additionally increase the cost of screw, the product assembling time more need not increase extra assembling procedure and manpower in order to lock screw, has improved production efficiency and reduces cost.

[description of drawings]

Figure 1A is the schematic perspective view of first embodiment of the present utility model.

Figure 1B is the schematic side view of first embodiment of the present utility model.

Fig. 2 A is the schematic perspective view of second embodiment of the present utility model.

Fig. 2 B is the schematic side view of second embodiment of the present utility model.

Fig. 3 is the schematic perspective view of the 3rd embodiment of the present utility model.

Fig. 4 is the schematic perspective view of the 4th embodiment of the present utility model.

Fig. 5 is the schematic perspective view of the 5th embodiment of the present utility model.

[embodiment]

See also shown in Figure 1A and Figure 1B, first kind of execution mode of the present utility model provides a kind of single RCA connector of the EMI of having shielding shell fragment, it includes insulating body 11, metal shell 12, some signal terminals 131, earth terminal 132 and metal clips 14, wherein the front surface of this insulating body 11 protrudes the cylinder 110 of a hollow forward, one jack 111 extends to insulating body 11 inside from the end face of this cylinder 110, uses for the right plug that matches (figure does not show) and inserts and realize the signal connection.Offer plurality of terminals groove (figure do not show) near the insulating body 11 inherent jacks 111, signal terminal 131 and earth terminal 132 accommodate respectively be fixed in these terminal grooves with insert jack 111 in plug contact.Metal shell 12 is coated on the front surface of insulating body 11, understands easily, and this type of metal shell also can be made into case structure and be coated on insulating body 11 other surfaces except that the bottom surface.Metal clips 14 is arranged on the front surface of insulating body 11, and this metal clips 14 includes a junction 141, by this connecting portion 141 metal clips 14 is fixed to insulating body 11, and contacts with metal shell 12.In addition, offering a through hole 142 on this metal clips 14 stretches out for the cylinder 110 of insulating body 11, the both sides of through hole 142 respectively form a stretch section 143, make metal clips 14 have better elastic and can keep with the external ground device for example casing closely, continue to contact.The end of stretch section 143 is connected with the abutting part 144 of a horizontal expansion, in order to contact and the conducting ground path with the external ground device.

In the above-described embodiment, metal clips 14 is the front surfaces that are assembled to insulating body 11 after combining with metal shell 12, and is connected with earth terminal 132.Understand easily, the fit of metal clips 14 has multiple choices, for example also the connecting portion 141 of metal clips 14 can be done to be crimped between the front surface of metal shell 12 and insulating body 11 after the suitable bending, and in the grounding path design, can select metal clips 14 is directly contacted with earth terminal 132, also can select to contact with earth terminal 132 by metal shell 12.

Figure 1B has shown the lateral plan of RCA connector in the present embodiment, metal clips 14 is to extend to the upper surface that flushes in insulating body 11 substantially from insulating body 11 front surfaces near the oblique forward direction in bottom surface, approaches the end face of cylinder 110 (that is jack 111) simultaneously.When the RCA connector device fits on the circuit board and be assembled to the cabinet of electronic product, the end face of its cylinder 110 and jack 111 is stomidiums that pass on the cabinet to be reserved and exposing outside the cabinet, 144 inboards that contact at cabinet of the abutting part of its metal clips 14, strain by stretch section 143 contacts inboard retention wire of abutting part 144 and cabinet or face, the area that connector is contacted with casing increases, reduce impedance ground, increase substantially the electromagnetic shielding effect of product integral body.

It shown in Fig. 2 A and Fig. 2 B the RCA connector that second kind of execution mode of the present utility model provides with EMI shielding shell fragment, in the present embodiment, the RCA connector is a biserial stack unit connector, and it includes insulating body 21, metal shell 22, some signal terminals 231, earth terminal 232 and metal clips 24.Wherein the front surface of insulating body 21 protrudes six hollow circular cylinders 210 that are arranged forward, and the inside of each cylinder 210 respectively forms a jack 111, uses for the right plug that matches (figure does not show) and inserts and realize the signal connection.Offer plurality of terminals groove (figure does not show) near inherent each jack 211 of insulating body 21, signal terminal 231 and earth terminal 232 accommodate respectively be fixed in these terminal grooves with insert jack 211 in plug contact.Metal shell 22 is coated on the front surface of insulating body 21, understands easily, and this type of metal shell also can be made into case structure and be coated on insulating body 21 other surfaces except that the bottom surface.Metal clips 24 is arranged on the front surface of insulating body 21, and this metal clips 24 includes a junction 241, by this connecting portion 241 metal clips 24 is fixed to insulating body 21, and contacts with metal shell 22.In addition, offering a through hole on this metal clips 24 stretches out for six cylinders 210 of insulating body 21, the both sides of through hole respectively form a stretch section 243, make metal clips 24 have better elastic and can keep with the external ground device for example casing closely, continue to contact.The end of stretch section 243 is connected with the abutting part 244 of a horizontal expansion, in order to contact and the conducting ground path with the external ground device.

About problems such as the selection of the fit of the metal clips 24 of RCA connector in the present embodiment, grounding path and connector and cooperating of external ground device such as cabinet, can directly consult aforementioned first embodiment to describe, no longer apply speech herein.

See also Fig. 3, Fig. 4 and Fig. 5 in addition again, shown third and fourth and five execution modes of the present utility model respectively.Be a kind of single-row double seat RCA connector as shown in Figure 3, it has two insulating bodies of arranging side by side 31, and each insulating body 31 includes a cylinder 310, metal shell 32, earth terminal 332 and metal clips 34 separately.4 shown in Figure 4 be a kind of single-row three formula RCA connectors, it has three insulating bodies of arranging side by side 41, each insulating body 41 includes a cylinder 410, metal shell 42, earth terminal 432 and metal clips 44 separately.Shown in Figure 5 is a kind of three a stack RCA connector of itemizing, and it has three insulating bodies that are stacked 51, and each insulating body 5 includes a cylinder 510, metal shell 52, earth terminal 532 and metal clips 54 separately.The structure and the matching relationship of each member in above-mentioned third and fourth and five execution modes can be described with reference to aforementioned first execution mode, no longer apply speech herein.

First to five execution mode is disclosed as described above, the utility model adopts the design of metal clips, make the metal shell of the metal shell of RCA connector by shell fragment contact cabinet, reach the continuity of ground connection, and utilize the shell fragment member to replace the fixed RCA connector of existing screw, make the contact between the two change into the contact of " line " even " face " formula by " point " formula, the area that connector contacts with casing increases, can reduce impedance ground, increase substantially the electromagnetic shielding effect of product integral body, and need not additionally increase the cost of screw, the product assembling time more need not increase extra assembling procedure and manpower in order to lock screw, has improved production efficiency and reduces cost.

Claims

1. one kind has the RCA connector that EMI shields shell fragment, it includes insulating body, metal shell, some signal terminals and at least one earth terminal, described insulating body is provided with the plug insertion of jack for pairing, near jack, offer the plurality of terminals groove, described signal terminal and earth terminal accommodate respectively be fixed in these terminal grooves with insert this jack in plug contact, described metal shell is coated at least one outer surface of insulating body, it is characterized in that: also be provided with metal clips on the insulating body, one end of described metal clips is to join to merging with described metal shell to contacting with earth terminal, it is outer and form an elasticity abutting part that the other end then extends insulating body, with the inconsistent and conducting ground path of external ground device.

2. the RCA connector with EMI shielding shell fragment as claimed in claim 1, it is characterized in that: described metal clips includes a junction, metal clips is fixed to insulating body and contacts with metal shell by connecting portion.

3. the RCA connector with EMI shielding shell fragment as claimed in claim 2, it is characterized in that: offer a through hole on the described metal clips, the both sides of through hole respectively form a stretch section.

4. the RCA connector with EMI shielding shell fragment as claimed in claim 3, it is characterized in that: the end of the stretch section of described metal clips is connected with the abutting part of a horizontal expansion, in order to contact and the conducting ground path with the external ground device.

5. the RCA connector with EMI shielding shell fragment as claimed in claim 1, it is characterized in that: described connector is a biserial stack unit connector, extends outward a metal clips obliquely in order to connect with the external ground device from its front surface near the bottom surface.

6. the RCA connector with EMI shielding shell fragment as claimed in claim 1, it is characterized in that: described connector is single-row double seat RCA connector, and it has two insulating bodies of arranging side by side, and each insulating body is provided with a metal clips.

7. the RCA connector with EMI shielding shell fragment as claimed in claim 1, it is characterized in that: described connector is single-row three formula RCA connectors, and it has three insulating bodies of arranging side by side, and each insulating body includes a metal clips separately.

8. the RCA connector with EMI shielding shell fragment as claimed in claim 1 is characterized in that: described connector is three a stack RCA connector of itemizing, and it has three insulating bodies that are stacked, and each insulating body includes a metal clips separately.