CN2731777Y

CN2731777Y - Electrical connector

Info

Publication number: CN2731777Y
Application number: CN 200420066223
Authority: CN
Inventors: 陈汶锌
Original assignee: P Two Industries Inc
Current assignee: P Two Industries Inc
Priority date: 2004-06-23
Filing date: 2004-06-23
Publication date: 2005-10-05
Anticipated expiration: 2014-06-23

Abstract

The utility model provides an electrical connector, comprising a movable cover, several plugging terminals and a pair of locking terminals. The locking terminal of the electrical connector is arranged to have three functions of fixing, guidance and separation prevention; except the electrical connector can be fixed on the printed circuit board by the locking terminals, the flexible row line can be guided to correctly insert into the inner of the insulated body of electrical connector by using the guidance function of the locking terminals, to make the using function of the electrical connector improved; especially a mechanism capable of preventing separation is composed of the pair of locking terminals, to make the stable extent of the movable cover enhanced, and to make the separation of the movable cover from the insulated body avoided when the electrical connector is in use.

Description

Electrical connector

Technical Field

The present invention relates to an electrical connector, and more particularly to a flip-type electrical connector having a locking terminal with a locking function, a guiding function and an anti-releasing function.

Background

Referring to fig. 1, the conventional flip-top electrical connector 10 is formed by a longitudinal insulating body 11 and a u-shaped movable cover 12, which are connected to each other, and is soldered to a printed circuit board (not shown) by means of locking terminals 13 disposed at two sides of the insulating body 11, so that the conventional flip-top electrical connector 10 is fixed to the printed circuit board, and the mating terminals 14 and the printed circuit board are electrically connected well.

When in use, after the movable cover 12 of the conventional flip-top electrical connector 10 is lifted upwards, the flexible flat cable (not shown) can be inserted into the insulating body 11 and electrically connected to the plug terminals 14 embedded in the insulating body 11, and at this time, when the movable cover 12 lifted upwards is covered downwards again, the flexible flat cable can be stably fixed in the insulating body 11, so that the flexible flat cable can be electrically connected to the printed circuit board through the electrical conduction of the plug terminals 14.

Therefore, the purpose of the conventional flip-top electrical connector 10 is to provide the locking terminal 13, which is only used to fix the conventional flip-top electrical connector 10 on the printed circuit board, and has no other purpose.

In addition, the conventional flip-top electrical connector 10 has a structural disadvantage that the longitudinal insulating body 11 and the n-shaped movable cover 12 are only sleeved together, and when in use, the longitudinal movable cover 12 is easily deformed and bent due to poor bending strength, and is often separated from the insulating body 11, thereby causing poor electrical connection between the flexible flat cable and the plug terminal 14.

Therefore, if the locking terminal 13 of the conventional flip-top electrical connector 10 can be used for a new purpose, it is able to maintain the original purpose of use, and provide a guiding function and a function of preventing the movable cover 12 from being detached, which is an advantage of improving the function of the conventional flip-top electrical connector 10.

Disclosure of Invention

Therefore, the main objective of the present invention is to provide a novel electrical connector structure, especially to provide an innovative specific structure for the insulation body and the movable cover of the flip-top electrical connector, and to design the locking terminal to have triple functions of fixing, guiding and anti-disengagement, so that the flip-top electrical connector is fixed on the printed circuit board by the locking terminal, and the flexible flat cable is guided to be correctly inserted into the insulation body of the flip-top electrical connector by the guiding function of the locking terminal, so as to improve the function of the flip-top electrical connector, and the anti-disengagement mechanism for preventing the movable cover from disengaging is formed by the locking terminal, so as to enhance the firmness of the movable cover of the flip-top electrical connector, and thereby overcome the disadvantages of the conventional flip-top electrical connector, and avoid the disengagement phenomenon of the movable cover during use.

The secondary objective of the present invention is to provide a novel electrical connector structure, especially to provide an innovative shape structure for the locking terminal and the plug terminal, and to provide an innovative connection structure for the connection relationship between the locking terminal and the plug terminal, the insulation body and the movable cover, so as to make the locking terminal have the triple functions of fixing, guiding and preventing from falling off.

Drawings

Fig. 1 is an external view of a conventional flip-top electrical connector 10 and a state diagram of the same.

Fig. 2 is an external view of the cover-lifting type electrical connector 20 of the present invention.

Fig. 3 is an external view of the lift-off type electrical connector 20 according to the present invention when the movable cover 40 is lifted off.

Fig. 4 is an exploded view of the cover-lifting type electrical connector 20 of the present invention.

Fig. 5 is a transverse cross-sectional view of the insulative housing 30 shown in fig. 2, showing a coupling structure between the insulative housing 30, the movable cover 40 and the locking terminal 60.

Fig. 6 is an enlarged sectional view of the flip-top electrical connector 20 shown in fig. 2 along the section line 6-6, showing the position of the pivot 46 when the movable lid 40 is closed, and showing the condition that the plug terminal 50 is embedded in the insulating body 30, and the condition that the front end of the plug terminal is pivoted with the pivot 46 of the movable lid 40.

Fig. 7 is an enlarged sectional view of the flip-top electrical connector 20 shown in fig. 3 along the section line 7-7, showing the position of the pivot 46 when the movable cover 40 is lifted to the maximum angle, and showing the condition that the plug terminal 50 is embedded in the insulating body 30, and the condition that the front end of the plug terminal is pivotally connected to the pivot 46 of the movable cover 40.

Fig. 8 is a diagram illustrating a second flip-top electrical connector 20 according to the present invention in a state when the movable cover 40 is lifted and the flexible flat cable 80 is inserted into the insulating housing 30.

Fig. 9 is an enlarged cross-sectional view of the flip-top electrical connector 20 of fig. 8 taken along section line 9-9.

Fig. 10 is a schematic view of the second flip-top electrical connector 20 of the present invention soldered to a printed circuit board 70.

Fig. 11 is a diagram illustrating a second flip-top electrical connector 20 of the present invention soldered on a printed circuit board 70 and electrically connected to a flexible flat cable 80.

Fig. 12 is an enlarged cross-sectional view of the flip-top electrical connector 20 of fig. 11 taken along section line 12-12.

Brief description of the component symbols

10 conventional flip-top type electrical connector

11 insulation body 12 movable cover

13 locking terminal 14 plug terminal

20 cover-lifting type electric connector 30 insulation body

31 shell 32 open slot

33 a groove 34

35 caulking groove and 36 wedge-shaped groove

37 rectangular groove 37a axle hole

38 transverse cutting groove 38a tongue and groove

39 corner gap A slot

40 removable cover 41 cover

42 pressure plate 43 protruding shaft

44 terminal channel 45 pivot

46 notched groove 50 mating terminal

51 upper pin 52 lower pin

53 pivoting groove 54 first abutment

55 second abutting part 56 welding part

60 locking terminal 61 plate

62 spigot part 63 guide

64 stop B solder

70 printed circuit board 80 flexible flat cable

Detailed Description

Referring to fig. 2 to 5, the flip-top electrical connector 20 of the present invention is composed of an insulating body 30, a movable cover 40, a plurality of plug terminals 50, and a pair of locking terminals 60.

The insulation body 30 is a housing 31 having a longitudinal flat shape, and a front section of the housing 31 is a concave open space formed in a downward exposed manner to form an open slot 32 of the housing 31, and the left and right sides of the slot surface of the open slot 32 form the left and right side walls of the open slot 32 due to the local height of each upward protrusion. Further, the end edge of the concave notch of the open groove 32 is inclined outward.

As shown in fig. 4, the upper surfaces of the left and right side walls of the open slot 32 of the insulating body 30 are respectively provided with an open space which is exposed downwards, including a first exposed space which is adjacent to the side of the open slot 32 and has a deeper longitudinal exposed space depth, and a second exposed space which is adjacent to the side of the first exposed space and has a shallower longitudinal exposed space depth, and thus, the open space and the second exposed space respectively form a wedge-shaped slot 36 and a rectangular slot 37 which are arranged on the left and right sides of the open slot 32 of the insulating body 30. On the rear side groove wall of each rectangular groove 37 with shallow bare depth, an arc-shaped notch is respectively inwards arranged along the longitudinal direction of the left side wall and the right side wall to form the shaft holes 37a of the left side wall and the right side wall of the open groove 32 of the insulating body 30, and the shaft holes are communicated with the open groove 32 and the wedge-shaped groove 36 of the insulating body 30.

The purpose of the shaft hole 37a formed in the insulating body 30 is to provide a connection and arrangement for the protruding shaft 43 of the movable lid 40, and to form a pivot connection state, so that the movable lid 40 can be lifted up and closed down relative to the insulating body 30 with the protruding shaft 43 as a fulcrum, referring to fig. 2 to 5. Meanwhile, the rear side groove wall of the wedge-shaped groove 36 with a large exposed depth is formed to be an inclined surface, so that, as shown in fig. 3 and 7, the maximum angle at which the movable cover 40 can be lifted upwards can be limited, that is, when the movable cover 40 is lifted upwards to touch the inclined surface of the wedge-shaped groove 36, the movable cover 40 cannot be lifted upwards any more and can be positioned at an inclined position.

In addition, as shown in fig. 4 and 5, a transverse slot 38 is respectively disposed between the front wall thicknesses of the left and right side walls of the opening slot 32 of the insulating body 30, and is communicated with the opening slot 32, the wedge-shaped slot 36 and the rectangular slot 37 of the insulating body 30, and a tongue-and-groove 38a extending from the front to the rear longitudinally is further inwardly disposed from the inside of the transverse slot 38 along the longitudinal direction of the left and right side walls.

The purpose of the rectangular slot 37, the transverse cutting slot 38 and the mortise 38a of the insulating body 30 is to provide a space for the mortise joint with the locking terminal 60, and to facilitate the locking terminal 60 to have the guiding function and the function of preventing the movable cover 40 from being detached.

Referring to fig. 2 to 7, the housing 31 of the insulating housing 30 is provided with a rectangular slot a formed in a transverse direction, as shown in fig. 8 and 9, for providing the flexible flat cable 80 to be inserted into the insulating housing 30.

In order to embed the plug terminal 50 in the housing 31, the upper end and the lower end of the rear wall of the housing 31 are respectively formed with a notch 38 by cutting a partial thickness; and, on the rear side wall of the housing 31, a plurality of longitudinal and mutually parallel embedding slots 33 are formed, which are communicated with the rectangular slot a inside the housing 31 and penetrate through the slot surface of the open slot 32 of the housing 31, so that a plurality of longitudinal and mutually parallel slots 34 are formed on the slot surface of the open slot 32, and simultaneously, a plurality of longitudinal and mutually parallel embedding slots 35 are also formed on the upper side wall above the rectangular slot a inside the housing 31, and correspond to the slots 34 formed by the housing 31 in a one-to-one manner.

Referring to fig. 2 to 7, the structure of the plug terminal 50 of the present invention is generally composed of an upper pin 51, a lower pin 52, a first abutting portion 54, a second abutting portion 55 and a welding portion 56. The front section of the upper pin 51 is designed to have an inward concave empty space to form a pivot groove 53 of the front section of the upper pin 51.

When assembling the plug terminals 50, the plug terminals 50 are forcibly pressed into the longitudinal and mutually parallel embedding grooves 33 formed on the rear side wall of the housing 31 one by one from the rear side of the rear side wall of the housing 31, so that the upper pin 51 of each plug terminal 50 is embedded in each corresponding embedding groove 35 of the housing 31, and the front section of each upper pin 51 protrudes to the outside and is located above the opening groove 32 of the housing 31; and, the lower pin 52 of each plug terminal 50 is also embedded in each slot 34 of the corresponding housing 31, and the front section of each lower pin 52 is used to form the contact portion of the electrical contact, which is slightly protruded out of the opening slot 32 of the insulation body 30.

After each plug terminal 50 is pressed into the embedding groove 33 of the housing 31, as shown in fig. 6 and 7, the first abutting portion 54 and the second abutting portion 55 of each plug terminal 50 respectively abut and touch the side walls of the upper and lower end portions of the rear side wall of the housing 31 to define and fix the embedding position of each plug terminal 50, so that the plug terminal 50 can be stably arranged in the insulating body 30.

In addition, the front section of the upper pin 51 of each plug terminal 50 is provided with a pivot slot 53. Therefore, as shown in fig. 3, 6 and 7, when the movable cover 40 is assembled with the insulative housing 30 already provided with the plug terminals 50, each pivot 45 of the movable cover 40 and the pivot groove 53 of the upper pin 51 of each corresponding plug terminal 50 form a pivot state.

The movable cover 40 has a cover plate 41 and a pressing plate 42, and the pressing plate 42 is connected to the rear of the cover plate 41. A protruding shaft 43 is protruded from each of the left and right sides of the pressing plate 42. When the movable cover 40 is assembled with the insulating body 30, the protruding shaft 43 of the movable cover 40 is pivoted and coupled in the shaft holes 37a formed on the left and right sides of the insulating body 30, so that the movable cover 40 can be opened and closed upward and downward relative to the insulating body 30 with the protruding shaft 43 as a fulcrum, and when the movable cover 40 is closed downward, the upper cover of the opening groove 32 of the insulating body 30 can be formed.

Furthermore, on the plate surface of the pressing plate 42 of the movable cover 40, a plurality of terminal channels 44 are opened at the positions corresponding to the grooves 34 of the opening groove 32 of the insulating body 30, and a pivot 45 is provided in each terminal channel 44, but the pivot 45 is formed at the position inside the terminal channel 44 of the pressing plate 42, as shown in fig. 6 and 7, so as to form an eccentric arrangement.

The condition of the pivot 45 forming the eccentric arrangement is that after the movable lid 40 is closed downward, the vertical distance between the axis of the pivot 45 and the lowest position of the pressure plate 42 is set as d₁At this time, the lowest position of the pressing plate 42 is also lower than the contact portion of the lower pin 52 of the plug terminal 50, which is slightly protruded out of the opening groove 32 of the insulation body 30; when the movable lid 40 is tilted up to the maximum angle, the vertical distance between the axis of the pivot 45 and the lowest position of the pressing plate 42 is defined as d₂At this time, the lowest position of the pressing plate 42 is also higher than the contact portion of the lower pin 52 of the plug terminal 50 slightly protruding out of the opening groove 32 of the insulation body 30.

The purpose of the movable cover 40 is to establish the pivot shafts 45, as mentioned above, each pivot shaft 45 of the movable cover 40 and the pivot groove 53 of the upper pin 51 of each corresponding plug terminal 50 form a pivot connection state, so that the movable cover 40 can perform the opening and closing actions. Therefore, the protruding shaft 43 and the pivot 45 of the movable lid 40 can be arranged coaxially or arranged eccentrically slightly offset from each other, but the preferred embodiment is coaxial.

In the present invention, the pivot 45 of the movable cover 40 is designed to satisfy the above-mentioned eccentric condition, please refer to fig. 9 and 12, when the movable cover 40 is lifted upwards to the maximum angle, because the lowest position of the pressing plate 42 of the movable cover 40 is higher than the contact portion of the lower pin 52 of the plug terminal 50, the flexible flat cable 80 can be conveniently inserted into the inside of the rectangular slot a inside the insulating body 30; when the flexible flat cable 80 is inserted and the movable cover 40 is closed downward, the lowest position of the pressing plate 42 of the movable cover 40 is lower than the contact portion of the lower pin 52 of the plug terminal 50, therefore, the lowest position of the pressing plate 42 will generate a downward pressing force on the flexible flat cable 80 and also generate a downward pressing force on the lower pins 52 of the plug terminals 50, since the lower pins 52 of the plug terminals 50 are configured in a cantilever beam-like structure, therefore, the material has flexibility and elasticity, and after the material is subjected to downward movement under force, a counterforce is relatively generated, and the material has the tendency of restoring upward movement, so that the flexible flat cable 80 is not separated from the inside of the insulating body 30 by the opposing clamping force from the pressing plate 42 and the lower pins 52, and the flexible flat cable 80 is electrically connected to the upper pins 51 and the lower pins 52 of the plug terminals 50.

Referring to fig. 2 to 4, the left and right sides of the back surface of the cover plate 41 of the movable cover 40 are respectively provided with a notch 46, which is designed to accommodate a reserved space of the guiding portion 62 of the locking terminal 60, when the movable cover 40 is covered on the insulating body 30 downward, the guiding portion 62 of the locking terminal 60 enters the notch 46 of the movable cover 40, so that the movable cover 40 is in a horizontal covering state when covered.

In addition, as shown in fig. 2 and fig. 6, after the movable cover 40 is covered with the insulating body 30, the front end of the cover plate 41 of the movable cover 40 protrudes outside the insulating body 30, which can be used as a force application point for lifting and covering the movable cover 40, thereby facilitating the user to apply force and easily lift and cover the movable cover 40.

The shape and structure of the pair of locking terminals 60 are symmetrical, as shown in fig. 4, and have a horizontal plate body 61, and the end of the rear side of the plate body 61 is provided with a pin 62 formed to protrude longitudinally, and the end of the left side or right side of the plate body 61 is provided with a guide 63 formed to protrude transversely, and the rear side of each guide 63 is bent at a proper position to protrude upward a stop 64 formed to be upright.

Therefore, as shown in fig. 2 to 5, the pair of locking terminals 60 are inserted into the corresponding mortise 38a of the insulative housing 30 by the corresponding pins 62, and the plate portions 61 of the pair of locking terminals 60 are inserted into the transverse slots 38 on the left and right sides of the insulative housing 30, so that the pair of locking terminals 60 and the insulative housing 30 are integrated into a whole.

Moreover, the connection structure between the locking terminal 60 and the insulating body 30 can facilitate the locking terminal 60 of the present invention to have three functions of fixing, guiding and preventing from falling off.

When the pair of locking terminals 60 is jogged and connected with the insulating body 30 into a whole, the two opposite and opposite guiding parts 63 of the pair of locking terminals 60 just straddle over the notches of the opening slot 32 of the insulating body 30, and form a drawer-like guiding space together with the notches of the opening slot 32, so that the pair of locking terminals 60 have a guiding function.

Therefore, when the flip-top electrical connector 20 of the present invention is used, as shown in fig. 8 and 9, the flexible flat cable 80 can be guided to be correctly inserted into the insulating body 30 by the notch of the open slot 32 of the insulating body 30 and the guiding portion 62 of the locking terminal 60.

And, when the pair of locking terminals 60 is jogged and connected with the insulating body 30 into a whole, the stopping portion 64 of each locking terminal 60 of the pair of locking terminals 60 is located in the rectangular groove 37 on the left and right sides of the insulating body 30 respectively, and abuts against and stops in front of the shaft hole 37a on the left and right sides of the insulating body 30, as shown in fig. 2, 3, 5 and 8, it can stop and prevent the protruding shaft 43 of the movable cover 40 from separating from the shaft hole 37a, so that the pair of locking terminals 60 has the anti-falling function, and can prevent the protruding shaft 43 of the movable cover 40 from separating from the inside of the shaft hole 37 a.

Referring to fig. 10, when the plate portion 61 of the locking terminal 60 is soldered to the printed circuit board 70 by the solder B, the flip-top electrical connector 20 can be fixed to the printed circuit board 70, so that the pair of locking terminals 60 has a fixing function.

Referring to fig. 8 and 10, a second embodiment of the flip-top electrical connector 20 of the present invention is to extend a support block 90 outwardly from the left and right side walls of the housing 31 of the insulation body 30, so that when the flip-top electrical connector 20 is soldered on the printed circuit board 70, the support block can also be used to be soldered on the printed circuit board 70 to enhance the fixing ability of the flip-top electrical connector 20 on the printed circuit board 70.

Referring to fig. 10 to 12, taking the second flip-top electrical connector 20 of the present invention as an example, after the plate portion 61 of the locking terminal 60 of the flip-top electrical connector 20, the soldering portion 56 of the plug terminal 50, and the supporting block 90 of the insulating body 30 are soldered to the printed circuit board 70, the plug terminal 50 of the flip-top electrical connector 20 is electrically connected to the printed circuit board 70.

Referring to fig. 8 and 9, in use, the movable cover 40 is lifted upwards, and the flexible flat cable 80 is inserted into the slot a of the insulating body 30 by using the guiding portion 62 of the locking terminal 60 and the slot of the opening slot 32 of the insulating body 30; then, the movable cover 40 is closed downward by the reverse sequence of operations, so that the flexible flat cable 80 is clamped by the pressing plate 42 of the movable cover 40 and the lower pins 52 of the plug terminals 50, so that the flexible flat cable 80 is prevented from separating from the inside of the insulating body 30, and is electrically connected to the upper pins 51 and the lower pins 52 of the plug terminals 50, and further electrically connected to the printed circuit board 70.

Claims

1. An electric connector comprises an insulating body, a movable cover which can be lifted and covered, a plurality of plug terminals which are embedded in the insulating body, and a pair of locking terminals; wherein,

the insulating body is provided with an open slot, the left side wall and the right side wall of the open slot are respectively provided with a wedge-shaped slot and a rectangular slot, the rear side slot wall of each rectangular slot is also provided with a shaft hole, the middle of the wall thickness of the front section of the left side wall and the right side wall is respectively provided with a transverse slot, and the inside of each transverse slot is also provided with a longitudinal mortise; a transverse slot is arranged in the insulating body, and a plurality of longitudinal embedding slots which are parallel to each other are arranged on the rear side wall and are communicated with the transverse slot arranged in the insulating body, so that a slot is arranged on the slot surface of the open slot, and a corresponding embedding slot is arranged on the upper side wall of the transverse slot;

the plate surface of the movable cover is provided with the same number of terminal channels by the grooves arranged corresponding to the open grooves of the insulating body, and a pivot is arranged in each terminal channel; the left side and the right side of the movable cover are respectively provided with a convex shaft in a protruding way;

each plug terminal is provided with an upper pin and a lower pin which are respectively embedded in the embedding groove and the groove of the insulating body, the front section of the upper pin of each plug terminal is provided with a pivoting groove and forms pivoting connection with the corresponding pivot of the movable cover, and the contact part of the lower pin of each plug terminal is slightly protruded out of the open groove of the insulating body; and

each locking terminal of the pair of locking terminals is provided with a transverse plate body part, and a pin inserting part and a guide part which are respectively connected with the plate body part in a longitudinal and transverse mode, and the locking terminals are inserted into the corresponding mortise of the insulating body through the pin inserting parts which the locking terminals belong to respectively, so that the two opposite and opposite guide parts of the locking terminals are arranged above the open slot of the insulating body in a spanning mode.

2. The electrical connector of claim 1, wherein the pivot shaft provided in each terminal channel of the movable cover is eccentrically disposed, and the pivot shaft is set up at a position satisfying the following condition: when the movable cover is covered downwards, the lowest position of the movable cover is lower than the contact part of the lower pin of the plug terminal which is slightly protruded outside the open slot of the insulation body; and when the movable cover is lifted upwards to the maximum angle and is in an inclined state, the lowest position of the movable cover is higher than the contact part of the lower pin of the plug terminal which is slightly protruded outside the open slot of the insulating body.

3. The electrical connector as claimed in claim 1 or 2, wherein the rear wall of the housing forms a notch at an upper end thereof, and each of the terminals has a first abutting portion abutting against the sidewall of the notch.

4. The electrical connector as claimed in claim 1 or 2, wherein the guiding portion of each locking terminal of the pair of locking terminals is further provided with a stopping portion in an upright shape, and the stopping portion abuts and stops in front of the shaft holes on the left and right sides of the insulating body.

5. The electrical connector as claimed in claim 3, wherein the guiding portion of each locking terminal of the pair of locking terminals further has a stopping portion with an upright shape, which abuts and stops in front of the shaft holes on the left and right sides of the insulative housing.

6. The electrical connector as claimed in claim 1, 2 or 5, wherein the movable cover has a notch groove on each of the left and right sides of the back of the panel.

7. The electrical connector of claim 4, wherein the movable cover has a notch groove on each of the left and right sides of the back of the panel.

8. The electrical connector of claim 1, 2, 5 or 7, wherein the left and right sidewalls of the housing have outwardly extending support blocks.

9. The electrical connector of claim 6, wherein the left and right sidewalls of the housing have outwardly extending support blocks.

10. The electrical connector as claimed in claim 1, 2, 5, 7 or 9, wherein when the movable cover is downwardly closed, the front end portion of the movable cover protrudes outside the insulative housing.