CN211789687U - Electrical connector - Google Patents

Abstract

The utility model discloses an electrical connector, which comprises an insulating body and a conductive terminal fixed on the insulating body. The insulating body is provided with an insulator formed on the conductive terminals once and a plastic body formed on the conductive terminals and the insulator secondary. The conductive terminals are arranged in two rows and include two ground terminals located at the outermost side and one between the ground terminals other terminals in between. The insulator is provided with front and rear insulating blocks respectively held at the front and rear ends of the conductive terminals, and a barrier between the front and rear insulating blocks. A barrier is provided between each adjacent two conductive terminals, and one of the other terminals is provided with a barrier. One side is covered with a partition and the other side is in contact with the plastic body. In this way, when the water vapor and accumulated liquid enter the interior of the insulating body through the joint gap between the insulator and the plastic body, the liquid and foreign matter will not penetrate between the adjacent conductive terminals, effectively avoiding the accumulation of the adjacent conductive terminals. A short circuit occurs due to the liquid, thereby ensuring the safety of the electrical connector.

Description

electrical connector

technical field

The utility model relates to an electrical connector, in particular to an electrical connector that can be inserted in forward and reverse directions.

Background technique

Chinese Invention Patent No. CN105680246B discloses an electrical connector, which includes an insulating body, a plurality of conductive terminals disposed on the insulating body, and a shielding shell covering the insulating body. The insulating body is provided with a one-time molding The insulator on the conductive terminal and the plastic body overmolded on the conductive terminal and the insulator. However, in the daily use of the electrical connector, under the influence of high temperature, low temperature, high humidity and other natural environments, the joint between the insulator of the insulating body and the plastic body is prone to plastic separation, and water vapor or liquid accumulation will cause The bonding gap between the insulator and the plastic body penetrates into the interior of the insulating body and penetrates between the conductive terminals, which may easily cause short-circuits between adjacent conductive terminals, resulting in the risk of burn-in and damage to the electrical connector.

Therefore, it is indeed necessary to provide a new electrical connector to overcome the above-mentioned drawbacks.

Utility model content

The purpose of the utility model is to provide an electrical connector for preventing short-circuit fire of the conductive terminals.

In order to achieve the above purpose, the present invention adopts the following technical scheme: an electrical connector includes an insulating body, a plurality of conductive terminals fixed on the insulating body, and a shielding shell covering the insulating body. The insulating body is provided with an insulator formed on the conductive terminals once and a plastic body formed on the conductive terminals and the insulator secondary. The conductive terminals are arranged in two on the upper and lower surfaces of the insulating body. Each of the two rows of conductive terminals includes two ground terminals located at the outermost side and other terminals located between the two ground terminals. The insulator is provided with a front insulating block held at the front end of the conductive terminal, a rear insulating block held at the rear end of the conductive terminal, and several partitions located between the front insulating block and the rear insulating block, so In the conductive terminals, the partition is provided between every two adjacent conductive terminals, and one side of the other terminals is covered with the partition and the other side is in contact with the plastic body.

In a preferred embodiment, the insulator is molded on the conductive terminal at one time to form a terminal module, and the terminal module is provided with a gap between the conductive terminal and the partition, and the other terminals One side is covered with the barrier and the other side is exposed in the void.

In a preferred embodiment, the barrier includes a first barrier at the front end and a second barrier at the rear end, the first barrier covers the inner side of the other terminals, and the second barrier Cover the outside of the other terminals.

In a preferred embodiment, the insulating body includes a base portion and a tongue plate portion extending forward from the base portion, the tongue plate portion includes a flat plate portion located at the front end and a stepped portion located at the rear end, the stepped portion extending from the The base portion is formed to extend forward and the flat plate portion is formed to extend forward from the step portion, and the partition is located in the base portion and the step portion.

In a preferred embodiment, the conductive terminal includes a holding portion held on the base portion, a contact portion extending forward from the holding portion and exposed to the flat plate portion, and a contact portion extending backward from the holding portion. the welding part of the base part, the barrier is covered on the holding part of the conductive terminal.

In a preferred embodiment, the contact portions of the two rows of conductive terminals are respectively exposed on the upper and lower surfaces of the flat plate portion, and the welding portions of the two rows of conductive terminals extend out of the base portion and are arranged in a row.

In a preferred embodiment, the two rows of conductive terminals are divided into an upper row of terminals and a lower row of terminals, the upper row of terminals and the lower row of terminals are the same in number and arranged in opposite order, and the conductive terminals are further provided with an automatic The contact portion is an embedded portion that is bent and extended forward, and the embedded portion is embedded in the flat plate portion.

In a preferred embodiment, the electrical connector further includes a pair of intermediate shielding sheets held in the insulating body and located between the two rows of conductive terminals, the pair of intermediate shielding sheets are separated from each other and disposed on the Both sides of the insulating body are provided with a fixing portion fixed in the insulating body and a grounding pin extending backward from the insulating body from the fixing portion, and the grounding pin of the intermediate shielding sheet is connected to the conductive The welding parts of the terminals all extend out of the insulating body and are arranged in a row in the lateral direction.

In a preferred embodiment, the flat plate portion is provided with protruding portions on both sides of the front end and retaining grooves on both sides of the rear end, the fixing portion of the middle shielding sheet is fixed in the tongue portion and the base portion, In addition, the middle shielding sheet is further provided with an abutting portion extending outward from the fixing portion, and the abutting portion is exposed from the protruding portion and the retaining groove.

In a preferred embodiment, the inner wall of the shielding shell and the insulating body are enclosed to form a receiving cavity, the tongue portion protrudes into the receiving cavity, and the base portion is held in the shielding shell and There is an abutting groove at the front end, the shielding shell includes several protrusions that protrude from the inner wall into the receiving cavity, the protrusions are clamped in the abutting groove, and the protrusions are The front end faces forward beyond the front end face of the stepped portion.

Compared with the prior art, the present invention has the following beneficial effects: the insulator is provided with a front insulating block held at the front end of the conductive terminal, a rear insulating block held at the rear end of the conductive terminal, and a front insulating block located at the front end of the conductive terminal. and several partitions between the rear insulating block, the partitions are arranged between every two adjacent conductive terminals in the conductive terminals, and one side of the other terminals is covered with the partitions. The other side is in contact with the plastic body, thereby extending the space distance between the conductive terminals. In this way, when the water vapor and the accumulated liquid enter the interior of the insulating body through the joint gap between the insulator and the plastic body, the water vapor and the accumulated liquid will not penetrate between the adjacent conductive terminals, effectively avoiding the gap between the adjacent conductive terminals. The short circuit phenomenon occurs due to the accumulation of liquid, which reduces the risk of burn-in, thereby ensuring the safety of the electrical connector.

Description of drawings

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

FIG. 2 is a perspective view of the electrical connector shown in FIG. 1 from another angle.

FIG. 3 is an exploded schematic view of the electrical connector shown in FIG. 1 .

FIG. 4 is a cross-sectional view of the electrical connector shown in FIG. 1 along the direction A-A.

FIG. 5 is a cross-sectional view of the electrical connector shown in FIG. 1 along the B-B direction.

FIG. 6 is a top view of the terminal module in the electrical connector shown in FIG. 1 .

Detailed ways

Referring to FIGS. 1 to 6 , the present invention discloses an electrical connector 100 for mounting on a circuit board (not shown). The electrical connector 100 includes an insulating body 10 , a plurality of conductive terminals 20 held in the insulating body 10 , a pair of intermediate shielding sheets 30 held in the insulating body 10 , and a shielding shell 40 covering the outside of the insulating body 10 . .

Referring to FIG. 3 , the insulating body 10 includes a base portion 11 and a tongue portion 12 extending forward from the base portion 11 . The base portion 11 is fixed in the shielding housing 40 and has a front-end holding groove 111 and a rear-end holding groove 112 . The tongue portion 12 includes a flat plate portion 13 at the front end and a step portion 14 at the rear end. The step portion 14 extends forward from the base portion 11 , and the flat plate portion 13 extends forward from the step portion 14 . Buckling grooves 131 are concavely formed on both sides of the rear end of the flat plate portion 13 , and a pair of convex portions 132 are formed on both sides of the front end of the flat plate portion 13 . The thickness of the stepped portion 14 in the width direction and the height direction is larger than that of the flat plate portion 13 , so as to enhance the strength of the insulating body 10 .

Referring to FIGS. 3 to 5 , the conductive terminals 20 are integrally formed in the insulating body 10 , and the conductive terminals 20 are arranged in two rows on the upper and lower surfaces of the insulating body 10 , and the two rows of conductive terminals 20 are divided into two rows. It is the upper row of terminals 21 and the lower row of terminals 22 . The upper row of terminals 21 and the lower row of terminals 22 have the same number, and the upper row of terminals 21 and the lower row of terminals 22 are arranged in reverse order from left to right, so that the electrical connector 100 can be plugged in both directions. for the function of the docking connector. The upper row of terminals 21 and the lower row of terminals 22 each include at least a pair of ground terminals, a pair of power terminals, a pair of signal terminals and a detection terminal. A pair of ground terminals of the upper row of terminals 21 and the lower row of terminals 22 are both fixed on both sides of the outermost end of the insulating body 10 . The pair of power terminals, the pair of signal terminals and the detection terminal are located between the pair of ground terminals, that is, in the middle of the insulating body 10 in the lateral direction, so as to form two ground terminals. other terminals in between.

The upper row of terminals 21 and the lower row of terminals 22 are held in the insulating body 10 in parallel in the up-down direction. The upper row of terminals 21 and the lower row of terminals 22 include a holding portion 201 held on the base portion 11 , a contact portion 202 extending forward from the holding portion 201 and exposed to the flat plate portion 13 , and extending backward from the holding portion 201 out of the base portion 11 . The welding part 203 and the embedded part 204 bent and extended forward from the contact part 202 .

The holding portions 201 of the upper row of terminals 21 and the lower row of terminals 22 are both held in the stepped portion 14 and the base portion 11 . The contact portions 202 of the upper row of terminals 21 are exposed on the upper surface of the flat plate portion 13 , and the embedded portions 204 of the upper row of terminals 21 are extended downward and embedded in the flat plate portion 13 to be fixed with the tongue portion 12 . The contact portions 202 of the lower row of terminals 22 are exposed on the lower surface of the flat plate portion 13 , and the embedded portions 204 of the lower row of terminals 22 extend forward and embed in the flat plate portion 13 to be fixed with the tongue portion 12 . Meanwhile, the welding portions 203 of the upper row of terminals 21 and the lower row of terminals 22 extend backward from the base portion 11 and are arranged in a row.

In this embodiment, the insulating body 10 is provided with an insulator 15 which is injection-molded on the conductive terminals 20 once and a plastic body (not numbered) which is injection-molded on the conductive terminals 20 and the insulator 15 twice. The insulator 15 is provided with a front insulating block 151 fixed on the front end of the conductive terminal 20 , a rear insulating block 152 fixed on the rear end of the conductive terminal 20 , and a plurality of partitions 150 between the front insulating block 151 and the rear insulating block 152 . The barrier 150 is disposed between each adjacent two conductive terminals 20 of the conductive terminals 20 , and one side of the other terminals is covered with the barrier 150 while the other side is connected to the plastic. The bodies are in contact, thereby extending the spatial distance between the conductive terminals 20 . In this way, when the water vapor and the accumulated liquid enter the interior of the insulating body 10 through the joint gap between the insulator 15 and the plastic body, the water vapor and the accumulated liquid will not penetrate between the adjacent conductive terminals 20, effectively avoiding adjacent conductive terminals 20. A short circuit occurs between the terminals 20 due to accumulation of liquid, which reduces the risk of burn-in, thereby ensuring the safety of the electrical connector 100 .

As shown in FIG. 6 , the insulator 15 is injection-molded on the conductive terminal 20 at one time to form a terminal module. The terminal module is provided with a gap 16 between the conductive terminal 20 and the partition 150 , and the other terminals One side is covered with the partition 150 and the other side is exposed in the void 16 . In this embodiment, the barrier 150 is located in the base portion 11 and the stepped portion 14 and covers the holding portion 21 of the conductive terminal 20 . The barrier 150 includes a first barrier 153 at the front and a second barrier 154 at the rear. The first barrier 153 covers the inner side of the other terminals, and the corresponding outer side of the other terminals is exposed to the gap. 16; the second partition 154 covers the outside of the other terminals, and the corresponding inner side of the other terminals is exposed in the gap 16; that is, when one side of the other terminals is exposed to the gap 16, the other side must be covered. The barrier 150 is covered. Thereby, the isolation between the conductive terminals 20 is ensured, so as to prevent water vapor and liquid accumulation from penetrating between adjacent conductive terminals 20 .

The pair of middle shielding sheets 30 are two symmetrical independent parts, and no connection structure is provided between the middle shielding sheets 30 . The pair of middle shielding sheets 30 are separated from each other and disposed on both sides of the insulating body 10 , and the pair of middle shielding sheets 30 are respectively located between the two pairs of ground terminals of the upper row of terminals 21 and the lower row of terminals 22 in the up-down direction. , and avoid other conductive terminals except the ground terminal in the width direction. Each of the intermediate shielding sheets 30 includes a fixing portion 31 held in the insulating body 10 , an abutting portion 32 extending outward from the fixing portion 31 , and a grounding pin 33 extending backward from the fixing portion 31 out of the insulating body 10 . The abutting portion 32 extends laterally outward from the fixing portion 31 .

The fixing portion 31 of the middle shielding sheet 30 is held in the tongue portion 12 and the base portion 11 . The abutting portion 32 is exposed outside the protruding portion 132 and the retaining groove 131 . During use, the butt connector is clamped in the retaining groove 131 and is electrically connected to the abutting portion 32 to realize the grounding function. In addition, when the mating connector is plugged and mated with the electrical connector 100 , the abutting portion 32 can protect the protruding portion 132 and the retaining groove 131 from being scratched by the mating connector, thereby prolonging the service life. At the same time, the ground pins 33 of the intermediate shielding sheet 30 and the welding portions 203 of the conductive terminals 20 both extend out of the insulating body 10 and are arranged in a row in the lateral direction.

The shielding shell 40 is made of metal material and has a substantially cylindrical structure. The inner wall 41 of the shielding shell 40 and the insulating body 10 are enclosed to form a receiving cavity 101 , and the tongue plate portion 12 protrudes into the receiving cavity 101 . The shielding shell 40 includes a plurality of protrusions 42 protruding from the inner wall 41 into the receiving cavity 101 and a rear stop 43 located at the rear. When the insulating body 10 is assembled into the accommodating cavity 101 of the shielding case 40 from the back to the front, the rear end surface of the protrusion 42 abuts in the abutting groove 111 , thereby preventing the insulating body 10 from being used during use Move forward. In addition, the front end of the protrusion 42 faces forward and protrudes beyond the front end surface of the base 11 . When an overhang phenomenon occurs during the mating process with the butt connector, the butt connector preferentially bears against the protrusion 42 to protect the insulating body 10 from being damaged. will be damaged. The rear stop portion 43 of the shielding shell 40 abuts in the holding groove 112 to prevent the insulating body 10 from moving backward. The shielding shell 40 further includes at least a holding pin 44 fixed on the circuit board (not shown), so the shielding shell 40 has the functions of grounding and shielding.

In the present invention, the insulator 15 is provided with a front insulating block 151 held at the front end of the conductive terminal 20 , a rear insulating block 152 held at the rear end of the conductive terminal 20 , and several insulating blocks located between the front insulating block 151 and the rear insulating block 152 Barrier 150. The barrier 150 is disposed between each adjacent two conductive terminals 20 of the conductive terminals 20 , and one side of the other terminals is covered with the barrier 150 while the other side is connected to the plastic. The bodies are in contact, thereby extending the spatial distance between the conductive terminals 20 . In this way, when the water vapor and the accumulated liquid enter the interior of the insulating body 10 through the joint gap between the insulator 15 and the plastic body, the water vapor and the accumulated liquid will not penetrate between the adjacent conductive terminals 20, which effectively avoids adjacent conductive terminals. A short circuit occurs between the terminals 20 due to accumulation of liquid, which reduces the risk of burn-in, thereby ensuring the safety of the electrical connector 100 .

To sum up, the above are only the preferred embodiments of the present utility model, and should not limit the scope of the present utility model, that is, any simple equivalent changes and modifications made according to the claims of the present utility model and the contents of the description , should still belong to the scope covered by this utility model patent.

Claims (10)

1. An electric connector comprises an insulating body, a plurality of conductive terminals fixedly held on the insulating body and a shielding shell covering the insulating body, wherein the insulating body is provided with an insulator formed on the conductive terminals in one step and a plastic body formed on the conductive terminals and the insulator in two steps; the method is characterized in that: the insulator is provided with a front insulating block fixed at the front end of the conductive terminal, a rear insulating block fixed at the rear end of the conductive terminal and a plurality of barriers positioned between the front insulating block and the rear insulating block, the barriers are arranged between every two adjacent conductive terminals in the conductive terminals, one side of each other terminal is wrapped with the barrier, and the other side of each other terminal is contacted with the plastic body.

2. The electrical connector of claim 1, wherein: the insulator is formed on the conductive terminals in one step to form a terminal module, the terminal module is provided with a gap between the conductive terminals and the partition, one side of each of the other terminals is coated with the partition, and the other side of each of the other terminals is exposed in the gap.

3. The electrical connector of claim 2, wherein: the partition columns comprise first partition columns located at the front ends and second partition columns located at the rear ends, the first partition columns are wrapped on the inner sides of the other terminals, and the second partition columns are wrapped on the outer sides of the other terminals.

4. The electrical connector of claim 1, wherein: the insulating body comprises a base and a tongue plate part extending forwards from the base, the tongue plate part comprises a flat plate part located at the front end and a step part located at the rear end, the step part extends forwards from the base and is formed by extending the flat plate part forwards from the step part, and the barrier is located in the base and the step part.

5. The electrical connector of claim 4, wherein: the conductive terminal comprises a holding part held on the base part, a contact part extending forwards from the holding part and exposed to the flat plate part, and a welding part extending backwards from the holding part and extending out of the base part, and the partition is coated on the holding part of the conductive terminal.

6. The electrical connector of claim 5, wherein: the contact parts of the two rows of conductive terminals are respectively exposed on the upper surface and the lower surface of the flat plate part, and the welding parts of the two rows of conductive terminals extend out of the base part and are arranged in a row.

7. The electrical connector of claim 5, wherein: the two rows of conductive terminals are divided into upper rows of terminals and lower rows of terminals, the upper rows of terminals and the lower rows of terminals are the same in number and opposite in arrangement sequence, the conductive terminals are also provided with embedded parts which are bent and extended forwards from the contact parts, and the embedded parts are embedded in the flat plate parts.

8. The electrical connector of claim 5, wherein: the electric connector further comprises a pair of middle shielding pieces which are fixedly held in the insulating body and located between the two rows of conductive terminals, the middle shielding pieces are arranged on two sides of the insulating body in a separated mode and are respectively provided with a fixing portion fixedly held in the insulating body and a grounding pin extending backwards from the fixing portion of the insulating body, and the grounding pin of the middle shielding pieces and the welding portions of the conductive terminals extend out of the insulating body and are arranged in a row in the transverse direction.

9. The electrical connector of claim 8, wherein: the flat plate part is provided with convex parts positioned at two sides of the front end and buckling grooves positioned at two sides of the rear end, the fixing part of the middle shielding piece is fixedly held in the tongue plate part and the base part, the middle shielding piece is also provided with a contact part extending outwards from the fixing part, and the contact part is exposed out of the convex parts and the buckling grooves.

10. The electrical connector of claim 4, wherein: the inner wall of the shielding shell and the insulating body are surrounded to form an accommodating cavity, the tongue plate portion protrudes into the accommodating cavity, the base portion is fixedly held in the shielding shell and is provided with a supporting groove located at the front end, the shielding shell comprises a plurality of protrusions protruding into the accommodating cavity from the inner wall, the protrusions are clamped in the supporting groove, and the front end faces of the protrusions exceed the front end face of the step portion forwards.

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