Electric connector

Abstract

An electric connector is used for being installed on a circuit board and comprises an insulation body extending in the lengthwise direction, a plurality of conductive terminals fixed to the insulation body and fixing pieces arranged at the two lengthwise ends of the insulation body. The insulation body comprises two opposite side walls extending lengthwise, two end walls connected to the two lengthwise ends of the two side walls and a slot located between the two side walls, the conductive terminals are arranged on the two side walls and provided with contact parts extending to the slot, the end walls are provided with holding grooves, and the holding grooves are provided with clamping grooves. The fixing piece comprises an upper fixing piece and a lower fixing piece, the upper end of the upper fixing piece is fixedly held in the fixedly holding groove, the upper end of the lower fixing piece is assembled at the lower end of the upper fixing piece, the lower ends of the upper fixing piece and the lower fixing piece are welded to the circuit board, and the upper fixing piece and the lower fixing piece are in floating connection before welding. Problems caused by warping of the two ends of the insulating body after welding can be effectively improved.

Description

[Technical field]

[0001] The utility model relates to an electric connector. [Background technology]

[0002] For related prior art, please refer to an electrical connector disclosed in Chinese invention patent application CN110429405A, which includes an insulating body, conductive terminals and fixing members arranged at both ends of the insulating body to fix it to a circuit board. A pair of elastic arms are provided on both sides of the fixing member, and the elastic arms are clamped on the insulating body from bottom to top. After the conductive terminals are welded to the circuit board, the insulating body may warp at both ends due to heat. In order to improve the warping, the above-mentioned elastic arms can adaptively float to a certain extent relative to the insulating body in the up and down directions. However, when the size of the insulating body is small, this design has a large bottleneck.

[0003] Therefore, it is necessary to provide an improved electrical connector to solve the above problems. [Contents of the utility model]

[0004] The main purpose of the utility model is to provide an electrical connector which is beneficial to maintaining structural stability.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an electrical connector, used to be installed on a circuit board, comprising an insulating body extending along a longitudinal direction, a plurality of conductive terminals fixed to the insulating body and fixing members arranged at both ends of the longitudinal length of the insulating body, the insulating body comprising two oppositely arranged side walls extending in the longitudinal direction, two end walls connected to the two ends of the longitudinal length of the two side walls and a slot located between the two side walls, the conductive terminals are arranged on the two side walls and are provided with contact portions extending to the slots, the end walls are provided with retaining grooves, the fixing members comprise an upper fixing plate and a lower fixing plate, the upper end of the upper fixing plate is retained in the retaining groove, the upper end of the lower fixing plate is assembled to the lower end of the upper fixing plate, the lower ends of the upper and lower fixing plates are both welded to the circuit board, and before welding, the upper and lower fixing plates are floatingly connected.

[0006] Furthermore, the upper fixing plate includes a first welding plate portion and an inserting portion bent and extended upward from the first welding plate portion, the lower fixing plate includes a second welding plate portion and connecting arms bent and extended upward from both ends of the second welding plate portion, the inserting portion is fixed in the holding groove, the second welding plate portion is arranged below the first welding plate portion, the first and second welding plate portions are welded to the circuit board, and before welding, the connecting arm is floatingly connected to the first welding plate portion.

[0007] Furthermore, the first welding plate portion extends horizontally and is provided with two through holes passing through the upper and lower parts. Each of the connecting arms includes a vertical portion bent and extended upward from the second welding plate portion and a horizontal portion bent and extended from the vertical portion. The vertical portion passes through the corresponding through hole from bottom to top, and the horizontal portion is buckled on the first welding plate portion.

[0008] Furthermore, in the up-down direction, the extension length of the vertical portion is greater than the thickness of the first welding plate portion, and a relative floating gap between the second welding plate portion and the horizontal portion is formed by the upper and lower fixing plates.

[0009] Furthermore, the upper fixing plate is formed by bending a metal sheet, and the thickness of the metal sheet is 0.4 mm.

[0010] Furthermore, the lower fixing plate is formed by bending a metal sheet, and the thickness of the metal sheet is 0.25 mm.

[0011] Furthermore, the second welding plate portion extends horizontally and is provided with a flow hole penetrating up and down.

[0012] Further, the area of ​​the second welding plate portion is smaller than the area of ​​the first welding plate portion, and the first welding plate portion exposes the flow hole.

[0013] Furthermore, the flow hole is arranged between the two through holes.

[0014] Furthermore, the end wall is provided with a protrusion, the retaining groove is recessed upward from the bottom of the protrusion, and the plug-in portion of the upper fixing plate includes a main body portion connected to the first welding plate portion and two barbs respectively arranged on both sides of the main body portion, and the two barbs are respectively interfered and fixed on both sides of the retaining groove.

[0015] Compared with the prior art, the fixing device of the utility model is configured as a two-piece type, which includes an upper fixing plate and a lower fixing plate. Before welding, the upper and lower fixing plates can float up and down relative to each other. Even if the electrical connector has a smaller insulating body, the floating gap between the upper and lower fixing plates can be adjusted to a suitable size to adapt to the size, which can effectively combat the warping of both ends of the electrical connector and prevent empty welding.

Brief Description of the Drawings

[0016] Figure 1 It is a three-dimensional diagram of the electric connector of the utility model.

[0017] Figure 2 yes Figure 1 A partial enlarged view of .

[0018] Figure 3 yes Figure 2 Exploded three-dimensional diagram.

[0019] Figure 4 yes Figure 3 A stereogram from another angle.

[0020] Figure 5 yes Figure 1 Side view of the fixing.

[0021] Figure 6 yes Figure 1 Bottom view of the fixing. [Specific implementation method]

[0022] In order to facilitate a better understanding of the purpose, structure, features and functions of the present invention, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods.

[0023] See also Figures 1 to 4 The utility model discloses an electrical connector 100 for installation on a circuit board (not shown), which includes an insulating body 10 extending along a longitudinal direction, a plurality of conductive terminals 20 fixed to the insulating body 10, and fixing members 30 provided at both longitudinal ends of the insulating body 10. The insulating body 10 includes two oppositely disposed side walls 11 extending longitudinally, two end walls 12 connected to the longitudinal ends of the two side walls 11, and a slot 13 located between the two side walls 11. The conductive terminals 20 are arranged on the two side walls 11 and are provided with contact portions 21 extending to the slots 13 and pins 22 extending downward from the insulating body 10. The end wall 12 is provided with a retaining groove 120, and the fixing member 30 includes an upper fixing plate 31 and a lower fixing plate 32. As shown in FIG. Figure 2 As shown, the upper end of the upper fixing plate 31 is fixed in the fixing groove 120, and the upper end of the lower fixing plate 32 is assembled to the lower end of the upper fixing plate 31. The lower ends of the upper and lower fixing plates 31, 32 are both welded to the circuit board. Before welding, the upper and lower fixing plates 31, 32 are floatingly connected.

[0024] Combination Figure 3 and Figure 4The upper fixing plate 31 includes a first welding plate portion 311 and an inserting portion 312 extending upwardly from the first welding plate portion 311, and the lower fixing plate 32 includes a second welding plate portion 321 and connecting arms 322 extending upwardly from both ends of the second welding plate portion 321. The holding groove 120 is open downward, and the inserting portion 312 is held in the holding groove 120 from bottom to top. The second welding plate portion 321 is disposed below the first welding plate portion 311. The first and second welding plate portions 311 and 321 are welded to the circuit board. Before welding, the connecting arm 322 is floatingly connected to the first welding plate portion 311. The first welding plate portion 311 extends horizontally and is provided with two through holes 313 extending vertically therethrough. Each of the connecting arms 322 includes a vertical portion 323 extending upwardly from the second welding plate portion 321 and a horizontal portion 324 extending upwardly from the vertical portion 323. During assembly, the vertical portion 323 is first passed through the corresponding through hole 313 from bottom to top, and then the end of the connecting arm 322 is bent into the horizontal portion 324 so that the horizontal portion 324 is buckled onto the first welding plate portion 311. Figure 5 In the up-down direction, the extension length of the vertical portion 323 is greater than the thickness of the first soldering plate portion 311, and the relative floating gap 40 between the upper and lower fixing plates is provided between the second soldering plate portion 321 and the horizontal portion 324. After the pin 22 of the conductive terminal 20 is soldered to the circuit board, due to the existence of the floating gap 40, the fixing member 30 can adjust the relative position of the upper fixing plate 31 and the lower fixing plate 32 to adapt to the degree of thermal warping of the insulating body 10, and then solder the first and second soldering plate portions of the upper and lower fixing plates to the circuit board, which can effectively prevent empty soldering, thereby optimizing the overall flatness of the insulating body 10, and especially when the size of the insulating body is small, the structural stability of the electrical connector 100 can be increased.

[0025] like Figure 3 and Figure 4 As shown, the upper fixing plate 31 is formed by bending a metal sheet. In this embodiment, the thickness of the metal sheet is 0.4 mm. The lower fixing plate 32 is formed by bending a metal sheet. The thickness of the metal sheet is 0.25 mm. The second solder plate portion 321 extends horizontally and is provided with a flow hole 325 that passes through from top to bottom. The area of ​​the second solder plate portion 321 is smaller than the area of ​​the first solder plate portion 311. The first solder plate portion 311 exposes the flow hole 325. The flow hole 325 can increase the fluidity between the solder paste and the metal. Combined Figure 6 , the flow hole 352 is arranged between the two through holes 313 .

[0026] Combination Figures 2 to 5The end wall 12 is provided with a protrusion 121, and the retaining groove 120 is recessed upward from the bottom of the protrusion 121. The plug-in portion 312 of the upper fixing plate 31 includes a main body portion 314 connected to the first welding plate portion 311 and two barbs 315 respectively arranged on both sides of the main body portion 314. The two barbs 315 are respectively interfered and fixed on both sides of the retaining groove 120. There is a gap between the barbs and the main body to make the barbs elastic. Therefore, the upper fixing plate 31 can also be floatingly connected to the insulating body 10, increasing the floatability between the fixing member 30 and the insulating body 10 in the up and down directions, which can further resist the warping of the insulating body 10 and maintain the structural stability of the electrical connector 100.

[0027] The above embodiments are only preferred implementations of the present invention and should not be used to limit the scope of the present invention. That is, any simple equivalent changes and modifications made according to the claims and description of the present invention should still fall within the scope of the present invention.

Claims

1. An electrical connector for mounting on a circuit board, comprising an insulating body extending in a longitudinal direction, a plurality of conductive terminals fixed to the insulating body, and fixing members disposed at both ends of the longitudinal direction of the insulating body, the insulating body comprising two longitudinally extending side walls disposed opposite to each other, two end walls connected to both ends of the longitudinal direction of the two side walls, and a slot located between the two side walls, the conductive terminals are arranged on the two side walls and are provided with contact portions extending to the slots, the end walls are provided with retaining grooves, and the characteristics are as follows: The fixing member includes an upper fixing plate and a lower fixing plate, the upper end of the upper fixing plate is fixed in the fixing groove, the upper end of the lower fixing plate is assembled to the lower end of the upper fixing plate, the lower ends of the upper and lower fixing plates are both welded to the circuit board, and before welding, the upper and lower fixing plates are floatingly connected.

2. The electrical connector according to claim 1, wherein: The upper fixing plate includes a first welding plate portion and an inserting portion bent and extended upward from the first welding plate portion, the lower fixing plate includes a second welding plate portion and connecting arms bent and extended upward from both ends of the second welding plate portion, the inserting portion is fixed in the holding groove, the second welding plate portion is arranged below the first welding plate portion, the first and second welding plate portions are welded to the circuit board, and before welding, the connecting arm is floatingly connected to the first welding plate portion.

3. The electrical connector according to claim 2, wherein: The first welding plate portion extends horizontally and is provided with two through holes extending upward and downward. Each of the connecting arms includes a vertical portion extending upward from the second welding plate portion and a horizontal portion extending upward from the vertical portion. The vertical portion passes through the corresponding through hole from bottom to top, and the horizontal portion is buckled on the first welding plate portion.

4. The electrical connector according to claim 3, wherein: In the up-down direction, the extension length of the vertical portion is greater than the thickness of the first welding plate portion, and a relative floating gap between the second welding plate portion and the horizontal portion is formed by the upper and lower fixing plates.

5. The electrical connector according to claim 3, wherein: The upper fixing plate is formed by bending a metal sheet, and the thickness of the metal sheet is 0.4 mm.

6. The electrical connector according to claim 3, wherein: The lower fixing plate is formed by bending a metal sheet, and the thickness of the metal sheet is 0.25 mm.

7. The electrical connector according to claim 4, wherein: The second welding plate portion extends horizontally and is provided with a flow hole penetrating up and down.

8. The electrical connector according to claim 7, wherein: The second welding plate portion has an area smaller than that of the first welding plate portion, and the first welding plate portion exposes the flow hole.

9. The electrical connector according to claim 7, wherein: The flow hole is arranged between the two through holes.

10. The electrical connector according to claim 7, wherein: The end wall is provided with a protrusion, and the retaining groove is recessed upward from the bottom of the protrusion. The plug-in portion of the upper fixing plate includes a main body portion connected to the first welding plate portion and two barbs respectively arranged on both sides of the main body portion, and the two barbs are respectively interfered and fixed on both sides of the retaining groove.

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