CN1790818A - Electric connector - Google Patents

Abstract

The invention discloses an electric connector for flexible printed circuit board, which comprises: an insulation body with a hold cavity with top wall on upper side and first grooves on two sides crossed top-bottom the body to accept button blocks and prevent the crack of poles, a plurality of terminals fixed in said insulation body in rows, and a plug member with a tongue plate to plug in the cavity and a couple of block poles on sides of said plate with button block extruded to said plate. Wherein, when assembling the said plug member on the insulation body, the end of said tongue plate is on the bottom wall along butt-joint direction to align and lead the plate inserting said cavity.

Description

Electric connector

[technical field]

The present invention relates to a kind of electric connector, relate in particular to a kind of be used to connect flexible printed circuit board (Flexible Printed Circuit, electric connector FPC).

[background technology]

Connector for flexible printed circuit board is a kind of electric connector that is used for flexible printed circuit board is electrically connected at main circuit board, and this kind electricity connects device and comprises insulating body and the some terminals that is contained in this insulating body that is installed on the main circuit board usually.Described insulating body offers host cavity, and described terminal protrudes in the described host cavity.Described electric connector also is provided with a plug that is provided with the card post, to fix flexible printed circuit board in this connector for flexible printed circuit board and to make conductive junction point and the reliable conducting of terminal on the flexible printed circuit board.

Being generally two-part between described card post and insulating body fixes and cooperates.As being disclosed in the 5th, 816, No. 845 United States Patent (USP)s on October 6th, 1998, the card post on the electric connector plug of its announcement is provided with projection, small one and large one two projections before and after the both sides of described insulating body are arranged at intervals with respectively.When described plug was assembled on the insulating body, the place ahead that the projection of described card post is crossed insulating body along the butt joint direction was snapped between two projections of described insulating body than big protruding block.

Yet, above-mentioned card post in being assembled to the process of insulating body, cross on the insulating body than big protruding block the time can be subjected to bigger tension force effect and may break in the generation of card post and base portion junction.

Therefore, necessaryly provide a kind of electric connector, make the card post of plug and base portion junction be difficult for breaking.

[summary of the invention]

The object of the present invention is to provide a kind of card post of plug to be difficult for opening the electric connector that splits.

For reaching above-mentioned purpose, the present invention adopts following technical scheme: electric connector of the present invention comprises: insulating body, it has a front surface and offer host cavity on this front surface, the upside of this host cavity is provided with roof, and this insulating body also defines from front surface and is the butt joint direction to the direction that host cavity enters; Several terminals, it in a row is immobilizated in the insulating body, and described terminal protrudes into and is used in the host cavity being electrical connected with flexible printed circuit board; Plug, it comprises and can be contained in the host cavity in order to the hyoplastron of fastening flexible printed circuit board and be positioned at a pair of card post of these hyoplastron both sides that each card post is provided with towards the button of hyoplastron direction projection holds piece; Described insulating body both sides are respectively arranged with first groove, this first groove upwards runs through insulating body holds piece accommodating corresponding button along the top-down direction, when described plug was assembled on the insulating body downwards by the insulating body top, described hyoplastron was positioned at the place ahead of aforementioned roof along the end of butt joint direction.

Compared with prior art, the present invention has following beneficial effect: the button of electric connector plug of the present invention is held piece and is assembled in downwards in first groove that upwards runs through insulating body by the insulating body top, the card post of plug is not assembled on the insulating body with having tension force, can prevents well that opening of card post from splitting.

[description of drawings]

Fig. 1 is that electric connector of the present invention is installed on the three-dimensional combination figure on the main circuit board.

Fig. 2 is that electric connector of the present invention is installed on the three-dimensional exploded view on the main circuit board.

Fig. 3 is the three-dimensional exploded view that electric connector of the present invention is installed on another angle on the main circuit board.

Fig. 4 is the three-dimensional exploded view of the another angle of electric connector of the present invention.

Fig. 5 is the stereogram of the plug of electric connector of the present invention shown in Figure 4.

Fig. 6 is the solid cooperation figure that the holding mechanism that is installed on the electric connector of the present invention on the main circuit board shown in Figure 1 is positioned at the first holding position.

Fig. 7 is the cutaway view along the A-A line of electric connector of the present invention shown in Figure 6.

Fig. 8 is the solid cooperation figure that the holding mechanism that is installed on electric connector of the present invention on the main circuit board shown in Figure 1 is positioned at the second holding position.

[embodiment]

Please refer to Fig. 1 and shown in Figure 3, electric connector 100 of the present invention is used for flexible printed circuit board is connected to main circuit board 200, and it comprises insulating body 1, be contained in the terminal 2 of insulating body 1, be assembled to the plug 3 and the ear 4 of insulating body 1.

Please refer to Fig. 2 and shown in Figure 4, the host cavity 11 that described insulating body 1 has a front surface 10 and offers on described front surface 10.Define in the present embodiment to have and be butt joint direction B to the direction that host cavity 11 enters from front surface 10.Described insulating body 1 also comprises diapire 12, roof 13 and the pair of sidewalls of common qualification host cavity 11, and the sidewall both sides are respectively arranged with holding part 14 again.Described diapire 12 is resisted against on the main circuit board 200, and described roof 13 is positioned at the upside of host cavity 11 and is roughly parallel to diapire 12, and pair of sidewalls connects described diapire 12 and roof 13.

Please refer to shown in Figure 4, described terminal 2 in a row is immobilizated in the insulating body 1, and it comprises along the B extension of butt joint direction and is contained in the fixed arm 21 of diapire 12, the welding foot 23 that is roughly parallel to fixed arm 21 and is contained in the elastic contact arm 22 of roof 13 and extends insulating body 1.Described fixed arm 21 has the guidance part that is arranged in host cavity 11, and this guidance part extends to the front end of diapire 12; Described contact arm 22 also has to protrude into and is used for the contact site that is electrically connected with flexible printed circuit board in the host cavity 11.Please refer to shown in Figure 2ly, corresponding described contact arm 22 also offers hole on the roof 13, thinks that contact arm 22 provides the nargin of strain.

Please refer to shown in Figure 2ly, the aforementioned diapire 12 that is resisted against on the main circuit board 200 has the front end 120 that stretches out front surface 10 compared to roof 13, and the fixed arm 21 that corresponding described terminal 2 is contained in diapire 12 also stretches out the front surface 10 of electric connector with front end 120.Above-mentioned diapire 12 can also be oppositely arranged with roof 13 and be other configurations, such as, the leading edge of described roof 13 on butt joint direction B from front surface 10 to insulating body 1 depression, expose the front end of diapire 12 accordingly and be positioned at the front end of the fixed arm 21 of diapire 12 front ends.

The holding part 14 of being located at described insulating body 1 both sides comprises first projection 141, spacing lug 143 and the stop block 145 that is provided with at interval, and described first projection 141, spacing lug 143 and 145 formation of stop block upwards connect first groove 142 and second groove 144 of insulating body 1, thereby described first groove 142 and second groove 144 have horizontal opening and lateral openings respectively; Described second groove 144 is with respect to the front surface 10 of first groove 142 away from insulating body 1.Described first projection 141 is provided with the stop surface parallel with front surface 10 in first groove, 142 sides, and described spacing lug 143 is equipped with guide ramp in first groove, 142 sides and second groove, 144 sides.And described first projection 141 is big than the size of spacing lug 143 outstanding insulating bodies 1.

Please refer to Fig. 2 to shown in Figure 5, described plug 3 comprises the base portion 31 of lengthwise configuration, extend in order to the flat hyoplastron 32 of fastening flexible printed circuit board forward from base portion 31 middle parts and extend a pair of card post 33 of hyoplastron 3 both sides forward from base portion 31 both sides.Described hyoplastron 32 can be contained in the host cavity 11 and between fixed arm 21 and contact arm 22, it comprises the abutment face 321 of the diapire 12 that is resisted against insulating body 1 and the compressive plane 322 that roof 13 is used to push flexible printed circuit board relatively.Compressive plane 322 concordant the offering of described base portion 31 corresponding hyoplastrons 32 are used for guiding the groove 311 that flexible printed circuit board inserts.Please refer to shown in Figure 5, the abutment face 321 of described hyoplastron 32 offers the slit 323 that can accommodate the described guidance part of guiding along butt joint direction B, this slit 323 connects described compressive plane 322 and forms grooves 324 at the front end place of hyoplastron 32, thereby forms the broach shape configuration that groove 324 and projection 325 are intervally arranged at the front edge of hyoplastron 32.The end of described card post 33 is provided with towards buckleing of hyoplastron 32 direction projections and holds piece 331, the buckleing of described card post 33 held piece 331 and can be contained in first groove 142 or second groove 144, this button is held piece 331 and is provided with the guide ramp that cooperates with the guide ramp of spacing lug 143, is beneficial to described button and holds piece 331 and cross spacing lug 143 and be contained in second groove 144.

Please refer to Fig. 2, Fig. 4, Figure 6 and Figure 7, during assembling, described plug 3 is assembled downwards by insulating body 1 top, the buckleing of described card post 33 held piece 331 and is assembled into straight down in first groove 142 of insulating body 1 by the top of insulating body 1, since described card post 33 two buckle hold 331 of pieces distance greater than the distance between two first grooves 142, when described button is held piece 331 and is contained in first groove 142 straight down by insulating body 1 top, described insulating body 1 can not held the power that piece 331 produces on the horizontal direction to two buttons, therefore block the effect that post 33 can not be subjected to tension force, reduced the possibility of blocking post 33 and 31 rhegmas of base portion along the mode that butt joint direction B is assembled in insulating body 1 thereby block post 33.After described button is held piece 331 and is contained in first groove 142 fully, the place ahead (or depression of roof 13) that the end along butt joint direction B of described hyoplastron 32 is crossed roof 13 is resisted against on the front end 120 of diapire 12 of insulating body 1, and the guidance part front end of the fixed arm 21 of described terminal 2 is contained in the slit 323 of hyoplastron 32 with guiding plug 3 moving along butt joint direction B simultaneously.So far, described plug 3 is positioned at the first assembling position that is assembled to insulating body 1.

Please refer to Fig. 2 and shown in Figure 6, between connector 3 be assembled to the first assembling position after, a pair of ear 4 is assembled to insulating body 1 respectively to cover on the position of holding part 14, cover in first groove 142 and second groove 144 in the horizontal opening of insulating body 1 top, thereby the button of restriction card post 33 is held piece 331 and is upwards broken away from first groove 142.The side direction of described ear 4 also is extended with pin downwards, and the lateral openings that this pin can cover first groove 142 to be preventing being displaced sideways of card post 33, and described pin is welded on the main circuit board and can has grounding function.In addition, described a pair of ear can also be connected as a single entity and form metalwork and cover on insulating body 1.

When electric connector 100 connects flexible printed circuit board, earlier with the base portion 31 slightly upwards liftings of plug 3, make hyoplastron 32 tilt to cooperate with the fixed arm 21 of terminal 2, the guidance part of described fixed arm 21 is contained in the groove of broach shape structure; The button that blocks post 33 this moment hold piece 331 be insulated body 1 first projection 141 the stop surface block and can not break away from insulating body 1.Then, flexible printed circuit board (not shown) is inserted in the host cavity 11 by groove 311; Again plug 3 is set level along butt joint direction B and pushed away closely to insulating body 1, the guidance part of described terminal 2 relatively moves along slit 323, the guide ramp that described button is held piece 331 cooperates with the corresponding guide ramp of described spacing lug 143, guiding described button holds piece 331 second projections 143 and crosses spacing lug 143 and be contained in second groove 144, and be held on the spacing lug 143, this moment, described plug 3 was positioned at the second assembling position that cooperates fully with insulating body 1.

In the prior art, the button of card post 33 is held and is contained in first groove 142 after piece 331 general edge butt joint direction B cross first projection 141, hold piece 331 at button and cross in the process of first projection 141, described button is held piece 331 and is subjected to the horizontal side force that first projection 141 applies, and card post 331 opens to both sides.Hold effect preferably in order to reach, the amplitude that general described first projection, 141 side direction are outstanding can be bigger, and card post 33 need be also bigger to the open amplitude in both sides, thereby card post 33 is more easily opened with the junction of base portion 31 and split in the assembling process.And buckleing of the card post 33 of electric connector 100 of the present invention held piece 331 and is contained in straight down in first groove 142 by the opening of first groove 142 on the upper surface of insulating body 1, described button is held the side direction active force that piece 331 can not be subjected to first projection 141, and card post 33 also just needn't open to both sides.Thereby said structure and assembling effectively reduce 33 possibilities of splitting of card post.

In addition, in the prior art, the front end of hyoplastron 32 is the edge that flushes, for the host cavity 11 that smoothly flexible printed circuit board is inserted insulating body 1 upwards behind the base portion 31 of lifting plug 3, the edge that aforementioned hyoplastron flushes is resisted against on the fixed arm 21 of terminal 2, and plug 3 may produce mobile when being subjected to the power of side direction.Yet, among the present invention, the front edge of the hyoplastron 32 of plug 3 is a broach shape structure, and the part that the fixed arm 21 of terminal 2 is arranged in the slit 323 of hyoplastron 32 then can be transferred to the groove 324 that the front end of hyoplastron 32 is communicated with slit 323 gradually, still can limit being displaced sideways of plug 3; Because groove 324 is communicated with slit 323, set level the base portion 31 of plug 3 again, the fixed arm 21 of terminal 2 is contained in smoothly again in the slit 323 to push away near and to reach to second to the host cavity 11 of insulating body 1 with guiding plug 3 and assembles.

Claims (10)

1. electric connector that flexible printed circuit board can be connected to main circuit board, it comprises:

Insulating body, it has a front surface, offers host cavity on this front surface, and the upside of this host cavity is provided with roof, and this insulating body also defines from front surface and is the butt joint direction to the direction that host cavity enters;

Several terminals, it in a row is immobilizated in the insulating body, and described terminal protrudes into and is used in the host cavity being electrical connected with flexible printed circuit board;

Plug, it comprises and can be contained in the host cavity in order to the hyoplastron of fastening flexible printed circuit board and be positioned at a pair of card post of these hyoplastron both sides that each card post is provided with towards the button of hyoplastron direction projection holds piece;

It is characterized in that: described insulating body both sides are respectively arranged with first groove, this first groove upwards runs through insulating body holds piece accommodating corresponding button along the top-down direction, when described plug was assembled on the insulating body downwards by the insulating body top, described hyoplastron was positioned at the place ahead of aforementioned roof along the end of butt joint direction.

2. electric connector as claimed in claim 1, it is characterized in that: described insulating body comprises the diapire relative with roof, described diapire is provided with compared to the outstanding forward front end of roof, when described plug was assembled on the insulating body downwards by the insulating body top, described hyoplastron was positioned on this diapire front end.

3. electric connector as claimed in claim 1, it is characterized in that: described insulating body comprises the diapire relative with roof, the leading edge of described roof caves in to insulating body from front surface on the butt joint direction, expose the front end of diapire accordingly, when described plug was assembled on the insulating body downwards by insulating body top, the depression of described hyoplastron by roof the place ahead was downwardly against in the diapire front end.

4. as claim 1 or 2 or 3 described electric connectors, it is characterized in that: described terminal comprises the fixed arm that extends along the butt joint direction, the contact arm that is roughly parallel to fixed arm, described contact arm has the contact site that is arranged in the butt joint chamber, and the hyoplastron of described plug is between fixed arm and contact arm.

5. electric connector as claimed in claim 4, it is characterized in that: described fixed arm is contained on the diapire relative with roof and has the guidance part that is arranged in host cavity, this guidance part extends to the front end of diapire, described hyoplastron is provided with abutment face relative with diapire and the compressive plane relative with roof, the corresponding slit that can accommodate the described guidance part of guiding that offers moves along the butt joint direction with the guiding plug on this abutment face.

6. electric connector as claimed in claim 5, it is characterized in that: described slit connects compressive plane formation groove at the end of hyoplastron, end in hyoplastron forms projection and the spaced broach shape of groove structure, when described hyoplastron tilted to cooperate with the fixed arm of terminal, described groove can be accommodated the guidance part of guiding fixed arm.

7. electric connector as claimed in claim 1, it is characterized in that: described insulating body both sides also are provided with second groove, this second groove than first groove away from the insulating body front surface, and be provided with spacing lug between second groove and first groove, when described hyoplastron inserted in host cavity, the buckleing of described card post held piece can be contained in second groove by crossing spacing lug along the butt joint direction in first groove.

8. as claim 1 or 7 described electric connectors, it is characterized in that: described electric connector has metalwork, and described metalwork shelters from the opening of first groove in the insulating body top, holds piece with the restriction button and upwards breaks away from first groove.

9. electric connector as claimed in claim 8 is characterized in that: described first groove has the lateral openings that runs through the insulating body outside, and described metalwork is extended with pin downwards, and this pin shelters from the lateral openings of first groove.

10. electric connector as claimed in claim 1 is characterized in that: the button of described two card posts is held the distance of interblock greater than the distance between two first grooves.

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