CN1292585A - Electric connector and its terminal - Google Patents

Abstract

The invention relates to an electrical connector, which includes an insulating body, a plurality of conductive terminals, a shielding case and other components. The insulating body includes a main body and an extension body extending outward from the front surface of the main body, the extension body is provided with a plurality of terminal receiving grooves and the front end of each receiving groove is provided with an engaging portion; the conductive terminal includes a base portion and two opposite ends from the base portion The plug pins and welding pins extend outward respectively, the plug pins are provided with a fixed end, and an elastic arm extends from one side of the fixed end toward the base, and the fixed end is provided with an engaging body to engage with the insulating body To ensure that the terminals will not spring out and contact the top span.

Description

Electrical connectors and their terminals

The invention relates to an electrical connector, in particular to a universal busbar electrical connector which is assembled on a printed circuit board and can be docked with a butt electrical connector.

Please refer to China Taiwan Patent Application Nos. 84213272, 85210936, 85218284 and 86218866 for the prior art related to this case. As shown in FIG. Components such as the terminal 6 and the shielding case 7 . The insulating body 5 is provided with a plurality of terminal accommodating channels 51 penetrating through the insulating body 5 for correspondingly accommodating the same number of conductive terminals 6 . The conductive terminal 6 includes a fixing portion 62, an elastic insertion portion 64 and an insertion pin 61, wherein the elastic insertion portion 64 and the insertion pin 61 are formed by extending outward from two opposite ends of the fixing portion 62, and the elastic insertion The elastic contact portion 63 is provided on the portion 64 to abut against the terminal of the mated electrical connector. The fixing portion 62 is used for fixed engagement with the insulating housing 5 , and the plug pin 61 is used for plugging into the printed circuit board. The shielding shell 7 is assembled on the surface of the insulating body 5, and it has a frame opening at the position of the elastic insertion part 64 of the conductive terminal assembled on the insulating body for the insertion and docking of the terminals of the docking electrical connector (not shown), An engaging piece 71 is also provided at the intersection of the side surface and the bottom surface of the shielding case to fix the electrical connector on the printed circuit board.

The elastic insertion part of the conductive terminal of the existing electrical connector is directly placed in the terminal receiving channel of the insulating body, and the front end of the terminal receiving channel is not provided with a locking mechanism, so the elastic insertion part cannot be stably fixed in the insulating body. It is easy to cause the conductive terminal to bounce out. In addition, the elastic contact part of the conductive terminal is formed by bending the elastic socket part or is directly arranged on the surface of the elastic socket part. Since the elastic socket end of the conductive terminal is not fixed and the elastic space is limited, when it abuts against the abutting element , it is easy to cause the phenomenon of contact topping and permanent deformation of the contact part of the terminal, and it is impossible to ensure a good electrical connection between the electrical connector and the mating electrical connector.

In addition, another common existing electrical connector is to form a socket with a square mouth structure by the shielding shell for the insertion of the docking electrical connector. The transition between the side and the bottom of the shielding shell is the same as the surface and The transitions on the top surface are the same, they are all transitioned in a small arc, so they cannot provide effective fool-proof effect, and when the docking electrical connector is inserted, it is very easy to cause telecommunication pairing errors and cause damage to computer equipment. Moreover, the transition of the small arc transition will easily cause the gap between the joint piece and the bottom surface to be too small, so that when the surface of the joint piece is welded, only the outer edge of the joint piece can be welded, and the actual welding area is too small, resulting in electrical connectors and printing The combination of the circuit board is not stable, which affects the surface soldering area.

The purpose of the present invention is to provide an electrical connector, which can ensure that the phenomenon of terminal springing and contact spanning does not occur, and can reduce the area affecting surface welding and has a good fool-proof effect.

The object of the present invention is achieved through the following technical solutions: the electrical connector mainly includes components such as an insulating body, a plurality of conductive terminals, and a shielding shell. The insulating body includes a main body with a terminal accommodating space and a plate-shaped extension body extending outward from the front surface of the main body. The extension body is also provided with a plurality of terminal accommodating grooves for accommodating a corresponding number of conductive terminals. The conductive terminal has a base, a welding pin and an inserting pin. The welding pin and the inserting pin are respectively extended outward from two opposite end sides of the base. The extended end of the inserting pin is provided with a fixed end. An elastic arm extends parallel to the pins toward the base to engage with the mating connector terminals, the pins of the conductive terminals are accommodated in the terminal receiving groove for butt contact, and the soldering pins protrude out of the insulating body , to be electrically bonded to the printed circuit board. In addition, an engaging part protrudes from the terminal accommodating groove at the front end of the extension body of the insulating body, while the conductive terminal is provided with an engaging body relative to the fixed end of the plug pin. The purpose of positioning the terminal is to prevent the terminal from springing out after being assembled into the insulating body, and to ensure that the phenomenon of contact topping does not occur.

According to the above technical solution, the elastic arm extending obliquely upward from the front end of the conductive terminal pin is in the shape of a bow that bends upwards and then downwards, and has enough elastic space to prevent it from engaging with the mating element. A phenomenon of permanent deformation of the elastic arm will occur, and good electrical connection between the conductive terminal and the mating element can be ensured.

In addition, the shielding shell covering the insulating body has an oblique side at the junction of the bottom surface and the side surface, and the oblique side can reduce the area affecting the coplanarity of the surface welding and has a good fool-proof effect.

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

FIG. 1 is an exploded perspective view of the electrical connector of the present invention.

Fig. 2 is a perspective view of the conductive terminal of the electrical connector of the present invention.

Fig. 3 is a partial assembled view of the electrical connector of the present invention.

Fig. 4 is a sectional view of the electrical connector of the present invention taken along line IV-IV in Fig. 3 .

Fig. 5 is a three-dimensional assembled view of the electrical connector of the present invention.

Fig. 6 is a three-dimensional assembled view of the second embodiment of the electrical connector of the present invention.

FIG. 7 is a top view of the electrical connector shown in FIG. 6 .

FIG. 8 is a cross-sectional view of a conventional electrical connector.

Please refer to FIG. 1 , the electrical connector 1 of the present invention includes an insulating housing 20 , a plurality of conductive terminals 30 and a shielding housing 10 . Wherein the insulating body 20 includes a main body 21 in a generally square shape and a plate-like extension 24 extending outwards from the front surface 29 of the main body 21 for a considerable length. 28 (refer to FIG. 4 ), and the extension body 24 is provided with several terminal receiving grooves 27, and these terminal receiving grooves 27 communicate with the receiving space 28 through the front entrance 290 provided on the front surface 29, so as to A corresponding number of conductive terminals 30 are accommodated. In addition, a locking block 26 protruding to the front surface 29 with a proper length is provided at one end side of the terminal receiving groove 27 of the extension body 24 near the front end 25 . Protrusions 220 are disposed on two side surfaces 22 of the main body 21 adjacent to the front surface 29 to engage with corresponding button holes 11 of the shielding housing 10 . And the bottom surface of the main body 21 is also provided with a positioning post 23 to accurately position the electrical connector 1 on the expected position of the printed circuit board during surface soldering.

2, several conductive terminals 30 include a plate-shaped base 32 and two opposite side edges of the base 32 respectively extending outwardly from the plug pins 33 and welding pins 31, the extended ends of the plug pins 33 are set There is a fixed end 34 , and the front end of the fixed end 34 is provided with a slot 35 to engage with the block 26 of the insulating body 20 (refer to FIG. 4 ), so as to secure the conductive terminal 30 in the insulating body 20 . Extending from the other end of the fixed end 34 corresponding to the slot 35 toward the base 32 is an elastic arm 36 , which is in the shape of an arc bent upwards and then downwards for engagement with a mating element (not shown).

Please refer to Fig. 1 again, the shielding casing 10 is an empty frame-shaped casing, which is provided with a cover space 100, and is punched with button holes 11 and side elastic pieces 13 on the side 16 of the shielding casing 10, and on its top There is also a top elastic piece 18 on the surface 17 , and both the side elastic pieces 13 and the top elastic piece 18 are used to strengthen the firm connection between the electrical connector and the mating connector. The intersection of the bottom surface 14 and the side surface 16 of the shielding housing 10 is defined as an oblique side surface 15 , and an engaging piece 12 extends outward from a proper position of the junction between the side surface 16 and the oblique side surface 15 .

3 and 4, the conductive terminal 30 is inserted from the rear of the insulating body 20, and its base 32 is accommodated in the accommodation space 28 of the insulating body 20, and the soldering pin 31 extends horizontally from the base 32 to the outside of the main body 21 to communicate with the insulating body 20. Corresponding printed circuit boards are connected (not shown), and the corresponding plug pins 33 extend through the front opening 290 of the insulating body 20 into the terminal accommodating groove 27 and are accommodated therein. The locking slot 35 on the fixed end 34 engages with the locking block 26 on the insulating body 20 , so that the conductive terminal 30 can be fixed in the insulating body 20 and the conductive terminal 30 will not bounce out. The elastic arm 36 is located between the front surface 29 and the extension body 24, because it has enough elastic space to ensure that the elastic arm will not be permanently deformed, and in the process of engaging with the abutment element, because the conductive terminal 30 is fixed on the insulating In the main body 20, there will be no phenomenon of contact bumping, so that a good telecommunication transmission effect can be provided when it is engaged with the docking element.

Please further refer to FIG. 5 , the button hole 11 is engaged with the protrusion 220 of the insulating body 20 , so that the shielding case 10 is tightly fixed on the insulating body 20 . The insulating body 20 assembled with the conductive terminals 30 is accommodated in the cover space 100, and the inclined side 15 provided at the intersection of the bottom surface 14 and the side surface 16 can ensure that the mating electrical connector will not be inserted incorrectly, and has good fool-proof effect, and the oblique side 15 can reduce the area that affects the surface welding when the bonding piece 12 is surface welded. The engaging piece 12 is used together with the positioning post 23 (refer to FIG. 4 ) of the insulating body 20 to position and fix the electrical connector on the printed circuit board.

6 and 7 are the second embodiment of the electrical connector of the present invention. The difference from the first embodiment is that the side 16' of the shielding shell 10' corresponds to the welding of the conductive terminal 30' assembled to the insulating body 20'. The upper part of the foot 31' is further provided with an inclined surface 19', so that the rear part of the shielding housing 10' is in an open shape, so that when the surface adhesive connection is performed, that is, when the conductive terminal 30' is soldered to the printed circuit board, the terminal can be ensured. 30' fully receives the irradiation of infrared rays, which is convenient for soldering. In addition, when disassembling the conductive terminal 30' which has been soldered on the printed circuit board, because of the opening, the dismounting action is easy to complete.

Claims (18)

1. electric connector, comprise members such as insulating body, several conducting terminals and shielding casing, wherein insulating body comprises main body and from the outward extending ennation of the front surface of main body, be concaved with several terminal accommodating spaces in the main body, ennation is provided with several corresponding terminal containing slots that connects with receiving space, conducting terminal includes base portion and distinguishes outward extending inserting foot and welding foots from two opposite end sides of base portion, and shielding casing is provided with the cover cap space with respect to top, insulating body terminal containing slot position; It is characterized in that: convex with a holding section in the terminal containing slot of the front end of insulating body ennation at least, and the front end of conducting terminal inserting foot is provided with stiff end, is provided with one on the stiff end at least and engages body with the holding section of insulating body fastens.

2. electric connector as claimed in claim 1 is characterized in that: conducting terminal is extended with an elastic arm that can engage with abutment element from a side of stiff end.

3. electric connector as claimed in claim 1 is characterized in that: the inserting foot of conducting terminal be from base portion one end bottom longitudinally horizontal-extending form.

4. electric connector as claimed in claim 3 is characterized in that: the conducting terminal welding foot is to form from base portion other end bottom along and rightabout extension parallel with inserting foot.

5. electric connector as claimed in claim 1 is characterized in that: the engaging body of stiff end is the draw-in groove of a concavity structure on the conducting terminal inserting foot.

6. electric connector as claimed in claim 2 is characterized in that: the elastic arm of conducting terminal is to become arc that an elder generation makes progress, the back bends from stiff end adjacent terminal accepting groove downwards to the main direction extension.

7. electric connector as claimed in claim 1 or 2 is characterized in that: the holding section of insulating body is near a distolateral square fixture block that extends in parallel towards main direction of ennation in the terminal containing slot.

8. electric connector as claimed in claim 7 is characterized in that: two side surfaces that are adjacent to front surface on the main body of insulating body are provided with projection.

9. as the electric connector as described in the claim 8, it is characterized in that: the projection place that shielding casing corresponds to insulating body is provided with the button hole that is interlocked with it.

10. electric connector as claimed in claim 1 is characterized in that: shielding casing bottom surface and unilateral copulation place further are made as prism.

11. electric connector as claimed in claim 1 is characterized in that: the shielding casing side is provided with the inclined-plane corresponding to the top, conducting terminal welding foot position that is assembled on the electric connector.

12. electric connector as claimed in claim 1 is characterized in that: the main body bottom surface of insulating body further is provided with the reference column that electric connector can be positioned on the printed circuit board (PCB).

13. a conducting terminal comprises base portion, inserting foot and welding foot; It is characterized in that: the inserting foot front end is provided with stiff end, and is provided with an engaging body that inserting foot can be fixed on the insulating body on the stiff end at least.

14. conducting terminal as claimed in claim 13 is characterized in that: conducting terminal is extended with an elastic arm that can engage with abutment element from a side of stiff end.

15. conducting terminal as claimed in claim 13 is characterized in that: inserting foot be from base portion one end bottom longitudinally horizontal-extending form.

16. conducting terminal as claimed in claim 15 is characterized in that: welding foot is to form from base portion other end bottom along and rightabout extension parallel with inserting foot.

17. conducting terminal as claimed in claim 13 is characterized in that: the engaging body of inserting foot stiff end is the draw-in groove of a concavity structure.

18. conducting terminal as claimed in claim 14 is characterized in that: elastic arm is to become arc that an elder generation makes progress, the back bends from the contiguous inserting foot of stiff end downwards to the extension of base portion direction.

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