TWI661616B - Electrical connector - Google Patents

Abstract

The invention relates to an electrical connector for mounting on an external circuit board, which has insulation The body and the at least one conductive terminal, the conductive terminal is assembled and fixed to the terminal slot of the insulative housing, and includes a first connecting portion for connecting to the external circuit board, a second connecting portion for connecting with the external cable, and The intermediate connecting portion is connected to the top end of the pair of first connecting portions, one end of the second connecting portion is connected to the cable, and the other end has an insertion portion extending downward, and the intermediate connecting portion has an insertion portion for the insertion portion a limiting slot, at least a portion of the limiting slot and the corresponding insertion portion are respectively provided with a first interference portion and a second interference portion that interfere with each other, and the first interference portion and the second interference portion are interferingly positioned to make the intermediate connecting portion The interference between the second connecting portions is fixed.

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to a structurally stable electrical connector.

The electronic device needs to be connected to the external circuit board by a cable. In the prior art, the plug connector and the socket connector are usually matched to realize the connection between the cable and the external circuit board, which is not only complicated in structure but also high in cost; When the external circuit board is connected to the cable by the same electrical connector, it usually has a first connecting portion connected to the circuit board and a second connecting portion connected to the cable, and the first connecting portion and the second connecting portion and Before the welding, the auxiliary positioning piece is simply positioned by the jig, and the holding force between the three is not enough to cause the two to be separated from each other in the process.

In view of this, it is indeed necessary to further improve the conventional electrical connector to solve the above problems.

It is an object of the present invention to provide an electrical connector that can achieve a reliable and easy connection of a cable to an external circuit board and that is structurally stable during the process.

In order to achieve the above object, the present invention provides an electrical connector for mounting on an external circuit board having an insulative housing and at least one conductive terminal, the insulative housing having at least one terminal slot, the conductive terminal being assembled and fixed to the foregoing a terminal slot of the insulative housing, and including a pair of first connecting portions for connecting to the external circuit board, a second connecting portion for connecting with the external cable, and the first connection An intermediate connecting portion connected to the second connecting portion, wherein the intermediate connecting portion is connected to a top end of the pair of first connecting portions, wherein one end of the second connecting portion is connected to the cable, and the other end has a plurality of insertions extending downward The intermediate connecting portion has a limiting slot into which the insertion portion extends, and at least a portion of the limiting slot and the corresponding insertion portion are respectively provided with a first interference portion and a second interference portion that interfere with each other, the first interference The portion is interfering with the second interference portion to interfere with the intermediate connection portion and the second connection portion.

According to a further improvement of the present invention, the intermediate connecting portion has two rows of the limiting slots disposed opposite to each other in the lateral direction, and at least one of the limiting slots in each of the limiting slots is formed to protrude toward the center thereof. The aforementioned first interference portion.

According to a further improvement of the present invention, the insertion portion is formed in two rows corresponding to the limiting groove, and at least one of the insertion portions of each of the rows has the second interference portion positioned corresponding to the corresponding limiting groove.

According to a further improvement of the present invention, the second interference portion is a snap groove formed by recessing the insertion portion on one side in the lateral direction.

According to a further improvement of the present invention, the second connecting portion includes a crimping portion and a base portion connecting the crimping portion and the inserting portion, the base portion including the oblique top portion and the two sides of the obliquely inclined top portion extending downwardly respectively. a pair of side portions, wherein the insertion portions are respectively formed to extend downward from the corresponding side portions, and an angle between the side portions and the oblique top portion is greater than 90 degrees, so that the insertion portions are inclined and formed in a direction perpendicular to the vertical direction. It is the aforementioned second interference portion.

As a further improvement of the present invention, the intermediate connecting portion includes a limiting convex plate and a positioning piece which are stacked and arranged along a mounting direction of the conductive terminal mounted to the external circuit board, and the limiting convex plate connects the top ends of the pair of first connecting portions Connected integrally, the aforementioned positioning piece is a horizontally arranged plate-like structure, front The limiting convex plate and the positioning piece respectively have the limiting groove extending through the mounting direction, and the limiting convex plate and the limiting groove on the positioning piece are respectively aligned in the height direction for the insertion of the second connecting portion. The department is inserted in order.

As a further improvement of the present invention, the limiting plate and the positioning piece have a plurality of limiting slots provided with the first interference portion protruding toward the center thereof, and the first interference portion of the limiting convex plate and the positioning piece Do not cooperate with the corresponding second interference part.

According to a further improvement of the present invention, the limiting groove of the first interference portion is disposed on the limiting convex plate, and the limiting groove of the first interference portion is disposed on the positioning piece.

According to a further improvement of the present invention, only the limiting groove on the limiting plate has a first interference portion protruding toward the center thereof, and the positioning piece is attached to the lower side of the limiting plate and welded to the same. .

According to a further improvement of the present invention, the extending direction of the first connecting portion is identical to the mounting direction of the conductive terminal to the external circuit board, and the extending direction of the intermediate connecting portion is perpendicular to the mounting direction, and the intermediate connecting portion connects the pair The first connecting portion is connected at the end on the same side.

Compared with the prior art, the conductive terminal of the electrical connector of the present invention has a first connecting portion connected to the external circuit board and a second connecting portion connected to the external cable, and the line can be realized by the first and second connecting portions. The cable and the external circuit board are reliably and simply connected, and the second connecting portion and the intermediate connecting portion are pre-positioned by the first and second interference portions that interfere with each other before welding, thereby preventing each other from falling off before welding, so that Ensure the stability of the assembled structure during the manufacturing process.

100‧‧‧Electrical connector

11, 21‧‧‧Insulated body

110‧‧‧Terminal slot

112‧‧‧ Body Department

113‧‧‧ Positioning Department

1131‧‧‧ positioning surface

12, 22‧‧‧ conductive terminals

121, 221‧‧‧ first connection

1211‧‧‧Parts Department

1212‧‧‧ terminal feet

1213‧‧‧ Holding Department

1214‧‧‧Installation Department

1215‧‧‧through hole

122, 222‧‧‧second connection

1221‧‧‧First crimping department

1222‧‧‧Second crimping department

1223, 2223, 4223‧‧‧ Insertion Department

1224, 2224‧‧‧ Second Interference Department

1225, 2225‧‧‧ base

1226, 2226‧‧‧ oblique top

1227, 2227, 4227‧‧‧ side

123, 223‧‧‧Intermediate connection

1231, 2231, 3231, 4231‧‧ ‧ limit slots

1232, 2132, 3232, 4232‧‧‧ first interference department

1233, 2233, 3233, 4233‧‧‧ Limiting convex plates

1234, 223432344234‧‧‧ Positioning piece

3235‧‧‧Weld area

The first figure is a perspective assembled view of a first embodiment of the electrical connector of the present invention.

The second figure is an exploded perspective view of the electrical connector shown in the first figure.

The third figure is a perspective view of the insulative body of the electrical connector shown in the first figure.

The fourth figure is a perspective view of the conductive terminals of the electrical connector shown in the first figure.

The fifth figure is a perspective view of the second connecting portion of the conductive terminal shown in the fourth figure.

6 to 7 are schematic views of the conductive terminal after the second connecting portion is removed as shown in the fourth figure.

The eighth figure is a schematic cross-sectional view of the electrical connector shown in the first figure.

Figure 9 is a perspective assembled view of the conductive terminal of the second embodiment of the electrical connector of the present invention.

The tenth figure is a schematic view of the first connecting portion of the conductive terminal shown in the ninth figure.

Figure 11 is a cross-sectional view showing a portion of the structure of the second embodiment of the electrical connector of the present invention.

The twelfth figure is a schematic view of the conductive terminal after removing the second connecting portion shown in the ninth figure.

Figure 13 is a perspective view showing the first connecting portion and the intermediate connecting portion of the third embodiment of the electrical connector of the present invention.

Figure 14 is a schematic view showing a conductive terminal of a fourth embodiment of the electrical connector of the present invention.

Referring to FIG. 1 to FIG. 8 , a first embodiment of the electrical connector 100 of the present invention is shown. The electrical connector 100 is mounted on an external circuit board (not shown) having an insulative housing 11 and at least A conductive terminal 12. The insulative housing 11 has at least one terminal slot 110, and the conductive terminal 12 is assembled and fixed to the terminal slot 110. In the embodiment of the present invention, the two conductive terminals 12 are assembled by the insulative housing 11 for presentation. However, the number of the conductive terminals 12 and the corresponding terminal slots 110 is not limited thereto, and may be only one or For multiple.

As shown in the first to third embodiments, the insulative housing 11 has a body portion 112 and at least one positioning portion 113 projecting from a top surface of the body portion 112. The positioning portion 113 is provided with a tilt. The positioning surface 1131 is extended, and the positioning surface 1131 is disposed at an angle with respect to a horizontal plane and is not perpendicular. In the present embodiment, the two positioning portions 113 are respectively disposed on one side of the corresponding terminal slot 110 in the lateral direction, and the positioning surface 1131 is located on the side of the positioning portion 113 facing the terminal slot 110.

The body portion 112 has a plurality of the terminal grooves 110 formed in the height direction. In the embodiment, the number of the terminal slots 110 is four, and is divided into two groups arranged side by side in the lateral direction, each group. The terminal groove 110 includes two spaced apart and spaced apart in the front-rear direction, and each of the terminal grooves 110 has an elongated shape extending in the lateral direction.

Referring to FIG. 1 to FIG. 2 and FIG. 4 to FIG. 8 , the conductive terminal 12 includes a pair of first connecting portions 121 for connecting with an external circuit board for external cable (not shown). The second connecting portion 122 is connected and the intermediate connecting portion 123 connecting the first connecting portion 121 and the second connecting portion 122. The extending direction of the first connecting portion 121 is the same as the mounting direction of the conductive terminal 12 to the external circuit board, the extending direction of the intermediate connecting portion 123 is perpendicular to the mounting direction, and the intermediate connecting portion 123 connects the pair The first connecting portion 121 is connected to the end portion on the same side.

In the present embodiment, the conductive terminal 12 is attached to the insulative housing 11 in the height direction, that is, the mounting direction is the height direction, and the intermediate connecting portion 123 is connected to the top end of the pair of first connecting portions 121.

In the present embodiment, the intermediate connecting portion 123 extends in the front-rear direction such that the front and rear ends thereof are respectively connected to the top end of the corresponding first connecting portion 121, and the intermediate connecting portion 123 and the second connecting portion 122 have a positioning structure that cooperates with each other.

The pair of first connecting portions 121 are spaced apart in the front-rear direction, and each of the first connecting portions 121 extends in the height direction, wherein each of the first connecting portions 121 has a substrate portion 1211 and extends downward from the substrate portion 1211. At least one terminal leg 1212 and a solid protrusion bent from the substrate portion 1211 The holding portion 1213, at least one of the first connecting portions 121 is inserted into the terminal slot 110 and the terminal pin 1212 is electrically connected to the external circuit board.

In the present embodiment, each of the aforementioned terminal pins 1212 has a mounting portion 1214 that is arched toward both sides thereof in a lateral direction. The mounting portion 1214 is provided with a through hole 1215 extending through the front-rear direction so as to form a fisheye. Structure to crimp to the aforementioned circuit board. In other embodiments, the aforementioned terminal pins 1212 can also be in-line solder fillets.

The second connecting portion 122 has a first crimping portion 1221 and a second crimping portion 1222 connected to each other. The first crimping portion 1221 is sandwiched between the insulating layers (not shown) of the cable to tie the cable. Tightly fixed, the second crimping portion 1222 is clamped outside the conductor of the cable to achieve electrical connection, and the first crimping portion 1221 and the second crimping portion 1222 together constitute a crimping portion of the conductive terminal 12. In this embodiment, the overall extending direction of the second connecting portion 122 is at an angle to the horizontal plane and is not perpendicular.

In this embodiment, one end of the second connecting portion 122 is connected to the cable, and the other end has a plurality of insertion portions 1223 extending downward. The second connecting portion 122 further has a base portion 1225 connecting the crimping portion and the insertion portion 1223. The base portion 1225 includes a slanting top portion 1226 and a pair of sides extending downward from opposite sides of the oblique portion 1226 in the lateral direction. In the portion 1227, the insertion portions 1223 are formed to extend downward from the corresponding side portions 1227, respectively.

The intermediate connecting portion 123 has a limiting slot 1231 into which the insertion portion 1223 extends. At least a portion of the limiting slot 1231 and the corresponding insertion portion 1223 are respectively provided with a first interference portion 1232 and a second interference portion 1224 that interfere with each other. The first interference portion 1232 and the second interference portion 1224 are interferingly positioned to interfere with the intermediate connection portion 123 and the second connection portion 122.

The intermediate connecting portion 123 has two rows of the limiting slots 1231 disposed opposite to each other in the lateral direction, and at least one of the limiting slots 1231 of each of the limiting slots 1231 is disposed toward the center thereof. The first interference portion 1232 is formed to extend.

The insertion portion 1223 is divided into two rows in one-to-one correspondence with the limiting groove 1231. At least one of the insertion portions 1223 of each row of the insertion portions 1223 has the second interference portion 1224 positioned corresponding to the corresponding limiting groove 1231. As shown in the fifth embodiment, in the present embodiment, the second interference portion 1224 is a snap groove formed by the insertion portion 1223 recessed in the lateral direction.

The intermediate connecting portion 123 includes a limiting convex plate 1233 and a positioning piece 1234 stacked along the mounting direction of the conductive terminal 12 mounted to the external circuit board. The limiting convex plate 1233 integrates the top ends of the pair of first connecting portions 121. The positioning piece 1234 is a horizontally disposed plate-like structure, and the limiting convex plate 1233 and the positioning piece 1234 each have the limiting groove 1231 extending through the mounting direction, and the limiting convex plate 1233 and the positioning piece are connected. The limiting slots 1231 on the 1234 are respectively aligned in the height direction for the insertion portions 1223 of the second connecting portion 122 to sequentially extend.

In the embodiment, the limiting protrusions 1233 and the positioning piece 1234 have a plurality of limiting grooves 1231 provided with the first interference portion 1232 protruding toward the center thereof, the limiting convex plate 1233 and the positioning piece 1234. The first interference portions 1232 are respectively matched with the corresponding second interference portions 1224.

The limiting groove 1231 in which the first interference portion 1232 is disposed on the limiting convex plate 1233 and the limiting groove 1231 in which the first interference portion 1232 is disposed on the positioning piece 1234 are disposed offset.

During the assembly, the insertion portion 1223 of the second connecting portion 122 is inserted into the corresponding limiting slot 1231 of the limiting protrusion 1233, and the second connecting portion 122 and the limiting convex plate 1233 are interfered by the first and second interferences. The positioning portions 1234 connected with the tape (not shown) are assembled and attached to the lower side of the limiting convex plate 1233, and the positioning piece 1232 is interfered by the first interference in the partial limiting groove 1231. The portion 1232 and the second interference portion 1224 of the second connecting portion 122 are initially positioned to ensure the stability of the assembled structure in the subsequent process, and avoid misalignment and cause product defects. Soldering the tin in the above-mentioned limiting groove 1233 After the paste, the welding device is inserted to weld the insertion portion 1223 into the aforementioned limiting groove 1231. After the strips connected to the positioning piece 1234 and the limiting convex plate 1233 are respectively removed, the second connecting portion 122 of the conductive terminal 12 is connected to the cable, and the first connecting portion 121 is assembled into the insulating body 11 Inside, the terminal pin 1212 of the last conductive terminal 12 is inserted into and fixed to the through hole on the external circuit board.

Referring to FIG. 9 to FIG. 12, in the second embodiment of the electrical connector of the present invention, the insulative housing 21 and the conductive terminal 22 of the electrical connector are substantially the same as those in the first embodiment, and the foregoing conductive The terminal 22 also has a first connecting portion 221, a second connecting portion 222 and an intermediate connecting portion 223. The intermediate connecting portion 223 includes a limiting protrusion 2233 and a positioning piece 2234 which are arranged in a stack, and the limiting convex plate 2233 and the positioning piece The 2234 has a plurality of limiting grooves 2231 provided with a first interference portion 2232 protruding toward the center thereof, and the first interference portion 2232 on the limiting convex plate 2233 and the positioning piece 2234 and the second connecting portion 222 respectively The two interference portions 2224 are matched.

The limiting groove 2231 of the first interference portion is disposed on the limiting convex plate 2233, and the limiting groove 2231 of the positioning piece 2234 is disposed at a position offset from the first interference portion 2232.

Similarly to the first embodiment, the second connecting portion 222 includes a crimping portion and a base portion 2225 connecting the crimping portion and the inserting portion 2223. The base portion 2225 includes a sloped top portion 2226 and two sides of the self-tilting top portion 2226 in the lateral direction. The sides extend downwardly to form a pair of side portions 2227, and the insertion portions 2223 respectively extend downward from the corresponding side portions 2227, and other identical structures are not described herein again. The following mainly distinguishes between the two embodiments. Explain. In the present embodiment, unlike the first embodiment, the angle between the side portion 2227 and the oblique top portion 2226 is greater than 90 degrees, so that the side portion 2227 is outwardly flared as viewed in the vertical direction. Further, the insertion portion 2223 is disposed obliquely to the vertical direction and formed as the second interference portion 2224.

Please refer to the thirteenth and fourteenth figures, which are the third and fourth of the electrical connector of the present invention. A schematic structural diagram of an embodiment of the present invention, wherein the components and assembly relationships of the electrical connectors in the third embodiment of the present invention are substantially the same as those in the first embodiment. The components and assembly relationships of the electrical connectors in the fourth embodiment are the same as those in the first embodiment. The two embodiments are basically the same, and are not described herein again. Only the differences from the first and second embodiments will be described.

Specifically, the insulative housing and the conductive terminals of the electrical connector in the third embodiment are substantially the same as those in the first embodiment, and the second connecting portion of the conductive terminal has the same structure as the second connecting portion 122 in the first embodiment. That is, the second interference portion on the second connecting portion is also a snap groove formed in a recessed manner on one side of the insertion portion in the lateral direction. Other similar structures are not described herein again. The difference between the electrical connector and the first embodiment in the third embodiment is shown in FIG.

In the embodiment shown in the third embodiment, the limiting groove 3231 on the positioning convex plate 3233 has the first interference portion 3232 protrudingly formed toward the center thereof, and the limiting groove 3231 on the positioning piece 3234 is not The first interference portion is provided, and the positioning piece 3234 is attached to the lower side of the limiting convex plate 3233 and welded integrally. In other embodiments, the limiting slot 3231 on the positioning piece 3234 can also be provided with the first interference portion as in the first embodiment and the second embodiment, and the first interference portion and the insertion portion are interference-fitted and the positioning is performed. The sheet 3234 is welded to the limiting projection 3233.

Specifically, the positioning piece 3234 can be directly in the predetermined welding zone 3235 by spot welding on the surface of the positioning plate 3323 which is in contact with the limiting convex plate 3233, and further, in the interval between the two rows of limiting grooves 3231. The welding can realize the positioning and connection of the two; or the welding piece can be formed on the surface of the positioning piece 3234 or the limiting convex plate 3233 facing the other side, and welding the two in the welding area, the above manner can be realized The positioning between the positioning piece 3234 and the limiting convex plate 3233 enables the connection between the intermediate connecting portion including the positioning piece 3234 and the second connecting portion to be fixed.

The structure and assembly of the insulating body and the conductive terminal of the electrical connector in the fourth embodiment The structure is basically the same as that in the second embodiment. In particular, the structure of the second interference portion of the electrical connector in the fourth embodiment is the same as that of the second embodiment, and the insertion portion 4223 is formed by the outer portion of the side portion 4227. The second interference portion; the difference between the electrical connector and the second embodiment in the fourth embodiment is shown in FIG. 14 : in the embodiment shown in FIG. 14 , the limit on the positioning piece 4234 The groove 4231 does not have a first interference portion protruding toward the center thereof. The limiting groove 4231 on the position convex plate 4233 has a first interference portion 4232 protruding toward the center thereof, and the positioning piece 4234 is attached to the groove. The lower side of the limiting convex plate 4233 is welded and integrated. Similar to the third embodiment, the positioning piece 4234 in the fourth embodiment is connected to the limiting convex plate 4233 by spot welding, thereby achieving connection with the second connecting portion. Similarly, in other embodiments, the limiting slot 4231 on the positioning piece 4234 may also be provided with a first interference portion protruding toward the center thereof to form an interference fit with the insertion portion 4223, and the positioning piece 4234 is limited. The position convex plate 4233 is welded.

In the embodiments of the present invention, the conductive terminals of the electrical connector have a first connecting portion connected to the external circuit board and a second connecting portion connected to the external cable, and the cable can be realized by the first and second connecting portions. Reliable and easy connection with the external circuit board, and the second connecting portion and the intermediate connecting portion are pre-positioned by the first and second interference portions that interfere with each other before welding, thereby preventing each other from falling off before welding, thus ensuring The stability of the assembled structure during the manufacturing process.

It is to be understood that the equivalents of the invention are intended to be included within the scope of the invention as claimed.

Claims (10)

An electrical connector for mounting on an external circuit board having an insulative housing and at least one conductive terminal, the insulative housing having at least one terminal slot, the conductive terminal being assembled and fixed to the terminal slot of the insulative housing, and including a first connection portion connected to the external circuit board, a second connection portion for connecting to the external cable, and an intermediate connection portion connecting the first connection portion and the second connection portion, the intermediate connection portion being connected to the foregoing a top end of the pair of first connecting portions, wherein one end of the second connecting portion is connected to the cable, and the other end has a plurality of insertion portions extending downward, the intermediate connecting portion having a limiting slot into which the insertion portion extends, at least The first and second interference portions are respectively disposed between the first interference portion and the second interference portion, so that the intermediate connection portion and the second intermediate portion are interposed. The interference between the connecting parts is fixed. The electrical connector of claim 1, wherein the intermediate connecting portion has two rows of the limiting slots disposed opposite to each other in a lateral direction, and at least one of the limiting slots is disposed in each of the limiting slots. There is the aforementioned first interference portion which is formed to protrude toward the center thereof. The electrical connector of claim 2, wherein the insertion portion is in two rows corresponding to the limiting slot, and at least one of the insertion portions of each row has a positioning position corresponding to the corresponding limiting slot. The aforementioned second interference portion. The electrical connector of claim 3, wherein the second interference portion is a snap groove formed by the insertion portion being recessed on one side in the lateral direction. The electrical connector of claim 3, wherein the second connecting portion comprises a crimping portion and a base portion connecting the crimping portion and the inserting portion, wherein the base portion includes a sloped top portion and a lateral direction of the oblique top portion The two sides respectively extend downward to form a pair of side portions, and the insertion portions respectively extend downward from the corresponding side portions, and an angle between the side portions and the oblique top portion is greater than 90 degrees, so that the front portion The insertion portion is disposed obliquely with respect to the vertical direction and formed as the aforementioned second interference portion. The electrical connector of claim 4, wherein the intermediate connecting portion comprises a limiting convex plate and a positioning piece stacked along a mounting direction of the conductive terminal mounted to the external circuit board, and the limiting convex plate is The top end of the pair of first connecting portions are integrally connected, and the positioning piece is a horizontally arranged plate-like structure, and the limiting convex plate and the positioning piece each have the limiting groove extending through the mounting direction, and the limit position The convex plates and the limiting grooves on the positioning piece are respectively arranged in the height direction so that the insertion portions of the second connecting portions are sequentially inserted. The electrical connector of claim 6, wherein the limiting convex plate and the positioning piece have a partial limiting groove provided with the first interference portion protruding toward the center thereof, the limiting convex plate and the The first interference portions on the positioning sheet respectively cooperate with the corresponding second interference portions. The electrical connector of claim 7, wherein the limiting groove on the limiting convex plate is disposed with the limiting groove of the first interference portion disposed on the positioning piece. The electrical connector of claim 6, wherein only the limiting groove on the limiting plate has a first interference portion protruding toward the center thereof, and the positioning piece is attached to the limiting protrusion. The lower side of the plate is welded and integrated. The electrical connector of claim 1, wherein the extending direction of the first connecting portion is the same as the mounting direction of the conductive terminal to the external circuit board, and the extending direction of the intermediate connecting portion is perpendicular to the mounting direction, the foregoing The intermediate connecting portion connects the ends of the pair of first connecting portions on the same side.