CN2724239Y

CN2724239Y - Electric connector

Info

Publication number: CN2724239Y
Application number: CN032465556U
Authority: CN
Inventors: 和也高桥
Original assignee: Molex LLC
Current assignee: Molex LLC
Priority date: 2002-03-25
Filing date: 2003-03-24
Publication date: 2005-09-07
Anticipated expiration: 2013-03-24
Also published as: TW570393U; JP3817489B2; JP2003288967A

Abstract

An electric connector of the utility model is provided with one casing. The casing is provided with an inserting end which can insert to the plug portion of the plug connector, a back plate which is formed at the relative position of the inserting end; a plurality of terminals which are fixed in the casing; a conductive metal housing which covers on the casing, and a plurality of inserting openings which are installed on the bottom surface of the casing. When the terminal is fixed in the casing, the terminal is inserted into the casing from the bottom surface of the casing, the fixed part which is installed on the terminal is used to fix the terminal in the casing, a plurality of fixed slots for the fixed part of the terminals to insert are installed on the casing.

Description

Electric connector

Affiliated field

The utility model relates to an electric connector, relates in particular to be used for as this technology that needs the device of small electric connector of mobile device.

Background technology

Well-known in electric connector is USB (USB) connector.In in recent years, along with mobile device such as digital camera, mobile phone, the extensive use of PDAs (personal digital assistant) and other portable electronic equipment, the size of USB connector has had accordingly and has reduced.

These less USB connector are 1/8 of common USB connector sizes, and can have best characteristic when particularly being applied in the mobile device.They have 5 terminals, comprise except holding wire commonly used, are used for the ID terminal of the operation identification of main frame.

It is mini-A type USB connector and mini-Type B USB connector that these connectors are commonly referred to as, and is divided into A type and Type B.The socket connector that is fixed on the circuit board is divided into two types, and Type B is used to receive the Type B pin connector, and the AB type is used to receive A type and two kinds of connectors of Type B.

Figure 19 and Figure 20 are the cutaway views of the USB socket connector of related art.Socket connector 300 has an insulation shell 301; Be fixed to a plurality of (the normally 5) terminal 302 in the housing 301, the conducting metal shell 303 of covering shell 301.

What housing 301 was similar to forms the plug (not shown) that an insertion end 304 is used for being inserted into pin connector for box-shape and at its front end.Housing 301 has the back plate 305 relative with inserting end 304, and back plate 305 is provided with a plurality of terminals insertion openings 306.

As the socket connector among Figure 19 300, predetermined fixed dimension L1 and the width dimensions M that a necessary part is arranged.But the front and back size L of socket connector 300 or length are made up of fixed dimension L1 and varying dimensions L2.Thus, the overall dimensions that reduce connector is very difficult, and this is because the size of fixed dimension L1 part can not change, but can have only remaining varying dimensions L2 part in improved zone.Therefore size L is tending towards rising before and after.

Because terminal inserts opening 306 to be arranged on the back plate 305 of housing 301, will produce following other problem in addition: when socket connector 300 is installed on the circuit board, except that an open front 307, on the plate of back, also have a terminal to insert opening 306.Therefore impurity, dust and moisture or the like the board side that will insert opening 306 and enter connector easily by open front 307 and terminal.

The utility model content:

A purpose of the present utility model provides an electric connector, by considering the correlation between housing and terminal, adopts a kind ofly to make that impurity, dust and moisture or the like are difficult to be entered into the structure of connector and make smaller that the size of the front and back of this connector can do by housing.

To achieve these goals, the utility model provides an electric connector to comprise: an insulation shell, and the insertion end and with the plug portion that is inserted into pin connector is formed on the back plate that inserts the end relative position, is fixed to a plurality of terminals in the housing; Be arranged on a plurality of insertion openings on the bottom surface of housing, when terminal is fixed in the housing, be used for the basal surface limit of terminal by housing is inserted into housing.In addition, terminal can comprise the standing part and a plurality of holddown grooves that are arranged on the housing that is used for terminal is fixed to housing, is used to insert the standing part of terminal.Connector comprises that also one surrounds the shielding of housing.

According to the utility model, terminal is inserted in the housing by the insertion opening of housing basal surface.Therefore, do not have terminal to insert opening in the rear surface of housing, this one side is sealed by the back plate.Thus, impurity, dust and moisture or the like can not be easy to enter in the connector.

Preferably, be provided with holddown groove and extend along the back plate of housing in the direction that terminal inserts.When terminal inserts housing, if this arcuate fixed groove is arranged on the housing, the standing part of terminal will be inserted into or press fit in the holddown groove of housing, terminal will can not skid off the position of housing from it like this, therefore can reduce the size before and after the connector and make connector can be done littler, also can be so that terminal simply fixing.

Preferably, each terminal all has the support arm that elastic arm that a length direction at housing (direction of insertion of pin connector) extends and extends in the short transverse of housing, the standing part that is provided with along support arm.When standing part is provided with along the support arm that extends in the short transverse of housing, the size of the standing part of shell length direction can be very little.

Just, if the terminal of connector inserts from the back of housing, owing to the length direction of standing part at housing extends, so the length of housing (front and back size) must become big.In contrast, in the utility model, only be the thickness of support arm, so that the length of housing can be done is corresponding littler because standing part influences the lengthwise dimension of housing.

The support arm of preferred terminal is fixed in the housing and contacts with back plate face, and it is thinner that back plate is done, similar with the thickness of terminal.In this case, can keep back plate and terminal gross thickness to be reduced to the thickness of about twice terminal.By means of this mode, can further reduce the length of housing.

Preferably, housing has a back plate, left side plate, a top board and a base plate, and the left side plate of covering shell at least, the metal shell of top board and base plate.If housing and metal shell body are with such structure setting, promptly when housing is covered by metal shell, have only the opening of the front surface of connector to expose, other surface is sealed, and can improve the compactedness of the function of shielding and the socket connector of socket connector at an easy rate.

Preferably the boundary between back plate and base plate is provided with the guiding slit that is used for terminal welding afterbody.In this case, by means of the metal shell that is installed on the housing, the welding afterbody is drawn by these guiding slits, can improve the function of shielding of socket connector integral body by means of this mode.

Preferably, near the tip insertion end and terminal of housing, be provided with the most advanced and sophisticated maintaining part that is used to keep the terminal tip.The most advanced and sophisticated maintaining part of this type of terminal is set improves the maintenance function of terminal in the fixed position.

Description of drawings

The tissue of the utility model structure and mode, operation of the present utility model and further utility model purpose, advantage will be by also being better understood in conjunction with the accompanying drawings with reference to following description, identical Reference numeral is represented identical parts in the accompanying drawing, wherein:

Fig. 1 is the perspective view of two mating socket connectors of the utility model preferred embodiment.

Fig. 2 is the perspective view of single mating socket connector of the utility model preferred embodiment.

Fig. 3 is the end view of the socket connector of the utility model preferred embodiment.

Fig. 4 is the cutaway view of the socket connector of the utility model preferred embodiment.

Fig. 5 is the cutaway view that concerns between the terminal of expression housing and socket connector preferred embodiment.

Fig. 6 is the front view of the socket connector of the utility model preferred embodiment.

Fig. 7 is the rearview of the socket connector of the utility model preferred embodiment.

Fig. 8 is the vertical view of the socket connector of the utility model preferred embodiment.

Fig. 9 is the bottom view of the socket connector of the utility model preferred embodiment.

Figure 10 is the vertical view of the housing of the utility model preferred embodiment.

Figure 11 is the right view of the housing of the utility model preferred embodiment.

Figure 12 is the bottom view of the housing of the utility model preferred embodiment.

Figure 13 is the left view of the housing of the utility model preferred embodiment.

Figure 14 is the front view of the housing of the utility model preferred embodiment.

Figure 15 is the rearview of the housing of the utility model preferred embodiment.

Figure 16 is the vertical sectional view of the housing of the utility model preferred embodiment.

Figure 17 is the horizontal cross of the housing of the utility model preferred embodiment.

Figure 18 A is the vertical view of the terminal of the utility model preferred embodiment.

Figure 18 B is the end view of the terminal of the utility model preferred embodiment.

Figure 18 C is the rearview of the terminal of the utility model preferred embodiment.

Figure 19 is the cutaway view of related art socket connector.

Figure 20 is the rearview of related art socket connector.

Embodiment:

Embodiment of the present utility model can be different form, this can be as shown in the figure, here it is disclosed at present to be used for understanding to one, make detailed description as the specific embodiment of the illustration of considering the utility model principle, but the utility model is not limited to here diagram and description.

With reference to Fig. 1-18C preferred embodiment of the present utility model has been described.Preferred embodiment is an example that is applied in the mini USB connector, but purport of the present utility model can be used in the electric connector of other type easily.

Fig. 1 is comprehensive perspective view that can receive the two compatible socket connector R1 of mini A type and two kinds of pin connectors of mini Type B.Fig. 2 is only with comprehensive perspective view of the compatible socket connector R2 of the list that receives mini Type B pin connector.Fig. 3 is the end view of Fig. 2.Fig. 4 is a cutaway view, has shown the internal structure of socket connector.Fig. 5 is the cutaway view of housing, has shown the direction of insertion of terminal.Figure 10 to 17 has shown housing itself, and what Figure 18 showed is terminal.

Though the profile of the opening that is formed by metal shell has difference, the socket connector R1 of Fig. 1 and the socket connector R2 of Fig. 2 comprise housing, have identical basic structure.Therefore, the figure of Fig. 3 front is the example of mini Type B socket connector R2, and the figure of socket connector R1 has omitted.

To shown in Figure 9, socket connector R2 comprises the housing of being made by insulating resin or materials similar 10 as Fig. 2; Conducting metal shell 20 on the covering shell 10 and a plurality ofly make and be fixed on terminal 30 in the housing 10 by conducting metal.

The shape that housing 10 is made box have one be inserted into pin connector the plug portion (not shown) the insertion end and be formed on the back plate 12 of the relative position that inserts the end.More precisely, housing 10 has one and inserts end 11, back plate 12 and at

side plate

13,14, top board 15 and the base plate 16 of the left and right sides of insertion end 11.

Metal shell 20 integrally bendings formation one is the rectangle pipe roughly, covers the

left side plate

13,14 of housing 10, on top board 15 and the base plate 16.An opening (receiving unit) 3 that is used to make the rectangle plug portion of pin connector to insert is arranged between metal shell 20 and the housing 10.Reference numeral 12a represents to be used to form the dividing plate of opening 3.

As Fig. 2 and shown in Figure 6, the open front 21 of metal shell body 20 has a shape that pin connector can not be inserted with being reversed.That is to say that in four turnings of open front 21, two turnings of the base plate 16 of close housing 10 have a narrow shape.

Metal shell 20 impacts into a flat pattern by a metallic plate, and is crooked then and have a binding site at the side of base plate 16.By means of this mode, metal shell 20 forms one and has

side plate

23 and 24, the tubular form of top board 25 and base plate 26.

Contact

arm

27,28 is used to guarantee and being electrically connected of the shielding of pin connector that they are formed on the top board 25 of metal shell 20.These contact arms the 27, the 28th are cut into from top board 25.The earth terminal that passes through the jack (not shown) insertion on the circuit board that is used to weld, terminal is arranged on the bottom of the

side plate

23,24 of metal shell 20.

Shown in Figure 12,16 and 17, on the base plate 16 of housing 10, be formed with a plurality of insertion openings 17, when terminal 30 is fixed in the housing 10, make terminal 30 be inserted in the housing 10 by base plate 16 sides.Insert opening 17 and be arranged to the number the same with the terminal 30 that will be fixed to housing 10.Housing 10 is provided with a plurality of holddown grooves 18, is used for inserting the standing part 33 of the terminal 30 of (pressure fixing).

Insert opening 17 and holddown groove 18 and communicate with each other, holddown groove 18 is formed on the end of inserting opening 17, that is to say, as shown in figure 17, inserts opening 17 and is connected with T shape with holddown groove.The groove width of holddown groove 18 is greater than the width that inserts opening 17, and by means of the standing part 33 of the inwall that is inserted into holddown groove 18, terminal 30 can not skid off the position at place from housing 10.

Holddown groove 18 is provided with along the back plate 12 of housing 10, and extends in the direction of insertion of terminal 30.Owing to be formed on these holddown grooves 18 on the housing 10, when terminal 30 was inserted in the housing 10, terminal 30 was by means of being inserted into or pressure fixing will can not skid off from housing 10 to the standing part 33 in the holddown groove 18 of housing 10.Thereby therefore the size of the littler and socket connector R2 that the front and back size of socket connector R2 can be done reduces, and the fixing of terminal 30 also can become easy.

Each terminal 30 has the elastic arm 31 of a length direction at housing 10 (direction of insertion that is equivalent to pin connector) extension and the support arm 32 that extends along the short transverse of housing 10, and standing part 33 is provided with along support arm 32.By means of the standing part 33 that is arranged on the support arm 32 that extends along the short transverse of housing, the length direction of housing 10 along the standing part of stretching 33 can do very little.

Just, terminal 30 inserts by the rear portion of housing 10 in the connector of correlation technique, because standing part 33 extends at the length direction of housing 10, what the length of housing 10 (sizes of front and back) need be enough is big.On the contrary in preferred embodiment of the present utility model, because only be the thickness d of support arm 32, so that the length of housing can make is corresponding littler to the influential size of the length direction of housing.

Terminal 30 is fixed in the housing 10, their support arm 32 is contacted with 12 of the plates in back.Back plate 12 makes thin, approximately is the thickness d of the support arm 32 of terminal 30.By the support arm 32 that terminal 30 is set, terminal 30 can be contacted with 12 of the back plates of housing 10, also make back thickness of plate 12 and being of uniform thickness of terminal 30, can make the whole thickness of back plate 12 and terminal 30 drop to 2 times of terminal thickness.Length by means of this mode housing 10 can further reduce.

Be used for terminal 30 is connected to welding tail end on the circuit board, welding tail end 34 is arranged on terminal 30 substrate ends.Contact site 35 is arranged on the elastic arm 31 of each terminal 30, and contact site 35 is terminals 30 in the crooked and formation protruding upward of tip 36.Contact site 35 raises up and exceeds top board 15 slightly.

Five such terminals 30 are fixed in the housing 10.For terminal 30 can be fixed simultaneously, terminal 30 still is connected to when bending on the support 37.In fixing operation, five terminals 30 are fixed to simultaneously on the housing 10 and fracture at the C place then.

Housing 10 has back plate 12,

left side plate

13 and 14, top board 15 and base plate 16, the

left side plate

13 and 14 of metal shell 20 covering shells 10, top board 15 and base plate 16.When housing 10 is so covered by metal shell 20, have only open front 21 to expose, other limit is all sealed.Therefore can improve the function of shielding and the compactedness of socket connector.

The guiding slit 19 that is used for the welding afterbody 34 of terminal 30 is arranged on the boundary between back plate 12 and the base plate 16.By means of the metal shell 20 that is fixed on the housing 10, welding afterbody 34 is drawn by guiding slit 19, makes the slit that constitutes opening not around guiding slit 19.Can increase socket connector R2 by means of this mode and make as a whole function of shielding.

Near the insertion end 11 of housing 10 and terminal 30 tips 36, has the tip that most advanced and sophisticated maintaining part is used to keep terminal 30.Most advanced and sophisticated maintaining part comprises near the snap portions 11a the insertion end 11 that is arranged on housing 10 and the tip 36 of the terminal 30 that fastens with snap portions 11a, and tip 36 fastens with snap portions 11a, and can not move up.Terminal 30 most advanced and sophisticated maintaining parts like this be arranged so that the spring function that when terminal 30 remains on standing part, can strengthen elastic arm 31.

Though described above-mentioned Type B socket connector R2 in a preferred embodiment, the utility model can be applied in the connector of the two compatible socket connector R1 of A/B type or other type equally, and can obtain the advantage of foregoing description.

Shown and what describe is preferred embodiment of the present utility model, those those skilled in the art can be predicted and various variation of the present utility model can be designed, these variations will not break away from the spirit and scope of following claim.

Claims

1. an electric connector is characterized in that, comprising:

One insulation shell has the back plate that an insertion end and that is inserted into the pin connector insertion portion was arranged on and inserted the end relative position;

Be fixed to a plurality of terminals in the housing, and

Be arranged on a plurality of insertion openings on the bottom surface of housing, be used for when terminal is fixed to housing, making terminal to be inserted into the housing from the bottom surface of housing.

2. as the electric connector in the claim 1, it is characterized in that:

Described terminal comprises a standing part, and described housing comprises a plurality of holddown grooves, and described holddown groove is used to insert the standing part of terminal.

3. as the electric connector in the claim 2, it is characterized in that:

Described holddown groove extends along back plate setting and along the direction that terminal is inserted into housing.

4. as the electric connector in the claim 2, it is characterized in that:

Each described terminal has the support arm that an elastic arm that extends along the length direction of described housing and extends along the short transverse of housing, and standing part is along the support arm setting.

5. as the electric connector in the claim 4, it is characterized in that:

Support arm contacted with back plate face when described terminal was fixed in the housing, and described back plate forms and is as thin as the thickness that is approximately described terminal.

6. as the electric connector in the claim 2, it is characterized in that:

One surrounds the conducting metal shell of described housing.

7. as the electric connector in the claim 6, it is characterized in that:

Described housing further comprises left side plate, and top board and base plate, metal shell be the left side plate of covering shell at least, top board and base plate.

8. as the electric connector in the claim 2, it is characterized in that:

The guiding slit that is used for described terminal welding afterbody is arranged on the boundary between back plate and base plate.

9. as the electric connector in the claim 2, it is characterized in that:

Be used to keep the most advanced and sophisticated maintaining part of described terminal tip to be arranged near the tip of the insertion end of housing and terminal.

10. as the electric connector in the claim 6, it is characterized in that:

Described metal shell has two upper side corners and turning, two lower ends, and the distance between turning, two lower ends is littler than the distance between two upper side corners.