TWM512819U - Electrical connector - Google Patents

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an electrical connector capable of holding a solder ball firmly to ensure soldering.

The conductive terminals of the conventional electrical connector are usually pre-welded to fix the solder ball, that is, the solder ball is first soldered to the tail of the terminal, and then the solder ball is soldered to the circuit board. This method has many welding processes and increases the cost.

In order to solve the above problems, there is a terminal in the industry that uses a clamping arm to hold a solder ball without pre-welding, and an electrical connector thereof, such as an electrical connector disclosed in Chinese Patent No. CN201020242360.X, which includes an insulative body 1 and A plurality of conductive terminals 2 are disposed in the insulative housing 1. The conductive terminal 2 includes a base portion 21, and a resilient arm 22 extends upward from the base portion 21. The end of the resilient arm 22 is provided with a contact portion. The base portion 21 extends downwardly from the two soldering arms 23 with a gap 4 between the two soldering arms 23 for mounting the solder balls 3. Each of the welding arms 23 has a bent extension arm 231 and a clamping end 232 extending from the extension arm 231. When the solder ball 3 is inserted between the two clamping ends 232 The two clamping ends 232 clamp the widest portion (ie, the diameter) of the solder ball 3 such that the solder balls 3 are firmly held by the two clamping ends 232. The manner in which the solder ball 3 is sandwiched by the clamping end 232 of the conductive terminal 2 saves the soldering process compared to the conventional pre-solder ball, and the manufacturing is simpler.

When the solder ball enters between the two clamping ends, the welding arm is supported by the solder ball, and is deformed outward in the clamping direction thereof, and the fulcrum of the deformation is the base The lower end portion, the deforming force arm is the length of the entire welding arm, and the arm is long, which causes the welding arm to be easily fatigued and cannot stably hold the solder ball. And when the welding arm is resisted by the solder ball, in addition to being deformed outward in the clamping direction thereof, deformation may occur in the direction perpendicular to the clamping direction, causing the welding arm to be misaligned. The distance between the welding arms is greater than the diameter of the solder ball, so that the two soldering arms cannot be clamped at the widest point of the solder ball, and the solder balls are easy to fall, thereby failing to ensure the electrical connector. Welding quality.

Therefore, it is necessary to design a better electrical connector to solve the above problems.

In view of the problems faced by the background art, the purpose of the present invention is to provide an electrical connector in which the terminal firmly holds the solder ball to ensure the soldering quality.

In order to achieve the above objectives, this creation uses the following technical means:

An electrical connector includes a body, the body is provided with a plurality of receiving holes extending through the body from top to bottom; at least one terminal, the terminal has a fixing portion fixed in the receiving hole, and the fixing is fixed The second clamping arm extends downwardly for holding a solder ball, and a connecting arm is connected between the two clamping arms to the two clamping arms.

Further, the connecting arm is located below the fixing portion and has a space between the fixing portion.

Further, the connecting arm includes two connecting portions respectively connected to the two clamping arms, and an angle is formed between the two connecting portions.

Further, the clamping arm is located in the same plane as the fixing portion.

Further, a bottom portion of the clamping arm protrudes toward each other, and the hook portion enters the solder ball.

Further, the clamping arm includes an extending portion extending downward from the fixing portion, and a clamping portion extending downward from the extending portion, the clamping portion being clamped to the solder ball.

Further, the connecting arm is connected to the two extensions.

Further, the bottom surface of the body protrudes downwardly from at least two protrusions, and the two protrusions have a gap therebetween, and the clamping arm protrudes from the bottom surface of the body and is deformable in the gap.

Further, each of the bumps is provided with a stop surface facing the gap, and the stop surface can block the clamp arm from moving in the thickness direction.

Further, the protrusions are recessed from the blocking surface away from each other, and the recesses together with the clamping arm enclose a receiving space for accommodating the solder balls.

Further, the terminal further has two contact portions extending upward from the fixing portion, and the two contact portions are bent and extended laterally toward each other.

Compared with the prior art, the creation has the following beneficial effects:

Extending the two clamping arms downwardly from the fixing portion for clamping the solder balls, and the connecting arms are connected between the two clamping arms to the two clamping arms, in the clamping When the arm is supported by the solder ball, the fulcrum of the deformation of the clamping arm is moved downward from the connection of the fixing portion and the clamping arm to the connection between the connecting arm and the clamping arm, and the fulcrum The downward movement ensures that the clamping arm has sufficient elasticity, and the force arm during deformation is shorter, the clamping arm is not tired, the solder ball can be firmly held, and the clamping arm is When the solder ball is stretched, the connecting arm is opened, and the opening displacement of the two clamping arms is restricted to prevent excessive outward deformation, and the clamping arm is not fatigued due to excessive elastic deformation. , can maintain a good elastic clamping effect, so as to be stable The solder ball is clamped to ensure the soldering quality of the electrical connector.

1‧‧‧ Ontology

11‧‧‧ top surface

12‧‧‧ bottom

13‧‧‧ receiving holes

14‧‧‧Bumps

141‧‧ ‧ stop surface

142‧‧‧Depression

15‧‧‧ gap

16‧‧‧ accommodation space

17‧‧‧Protruding

2‧‧‧ terminals

21‧‧‧ Fixed Department

22‧‧‧Contacts

23‧‧‧Connecting Department

24‧‧‧Clamping arm

241‧‧‧Extension

242‧‧‧Clamping Department

244‧‧‧ hook

25‧‧‧Connecting arm

251‧‧‧Connecting Department

3‧‧‧ solder balls

The first figure is an exploded perspective view of the creative electrical connector; the second figure is an exploded perspective view of another perspective of the creative electrical connector; the third drawing is a bottom view of the creative electrical connector; A side view of the electrical connector; the fifth figure is a cross-sectional view of the terminal holding the solder ball in the creative electrical connector.

In order to better understand the purpose, structure, features and functions of the present invention, the present invention will be further described in conjunction with the drawings and specific embodiments.

As shown in the first figure, the present electrical connector includes a body 1 in which a plurality of terminals 2 are disposed.

As shown in the first and second figures, the body 1 is made of an insulating material, and the body 1 has a top surface 11 and a bottom surface 12 opposite to each other. The hole 13 extends through the bottom surface 12 , and the receiving hole 13 is for receiving the terminal 2 . The bottom surface 12 has at least two protrusions 14 protruding downwardly. In the embodiment, each of the receiving holes 13 is provided with two protrusions 14 , and the two protrusions 14 have a gap 15 therebetween. A recessed portion 142 is defined in the direction of the retaining surface 141 away from each other, and the recessed portion 142 is defined by a recessed portion 142. The accommodating space 16 is configured to receive a solder ball 3. In the embodiment, the accommodating space 16 forms an octagon shape, and at least two sides thereof are in contact with the solder ball 3. As shown in the fifth figure, the receiving hole 13 is convex toward the middle from the inner wall thereof near the bottom surface 12 At least one projection 17 is provided, and the projection 17 can block the top of the solder ball 3 to prevent it from being excessively displaced upward.

As shown in the first and fifth figures, the terminal 2 is integrally stamped and formed of a metal material, and the terminal 2 has a fixing portion 21 fixed in the receiving hole 13 and bent upwardly from the fixing portion 21 to extend two contacts. a portion 22, the two contact portions 22 are bent laterally toward each other, and a connecting portion 23 extends vertically upward from the fixing portion 21, and the connecting portion 23 is located between the two contact portions 22 when When the terminal 2 is installed in the receiving hole 13, the connecting portion 23 is attached to the inner wall of the receiving hole 13. Two clamping arms 24 extending vertically downward from the fixing portion 21 for clamping the solder balls 3, the clamping arms 24 and the fixing portion 21 are located in the same vertical plane, in this embodiment The clamping arm 24 and the fixing portion 21 are formed by cutting a single piece from a plate. A connecting arm 25 is connected between the two clamping arms 24 to the two clamping arms 24 , and the connecting arm 25 is located below the fixing portion 21 and spaced apart from the fixing portion 21 . When the clamping arm 24 clamps the solder ball 3, the clamping arm 24 is stretched by the solder ball 3. At this time, the clamping arm 24 is elastically deformed outward, and the fulcrum of the deformation is The fixing portion 21 is moved down to the joint of the connecting arm 25 and the gripping arm 24, so that the arm is short and the grip arm 24 is prevented from being fatigued. The connecting arm 25 includes two connecting portions 251 respectively connected to the two clamping arms 24, and an angle formed between the two connecting portions 251. The preferential angle is an obtuse angle, from the direction of the board surface of the terminal 2. It can be seen that the connecting arm 25 has a V shape, and when the two clamping arms 24 are stretched by the solder ball 3, the connecting arm 25 is opened, and the tension of the two clamping arms 24 is restricted. The displacement is opened to prevent excessive outward deformation, and the clamping arm 24 is not fatigued due to excessive elastic deformation, and a good elastic clamping effect can be maintained, so that the solder ball 3 can be firmly clamped, thereby ensuring the Welding quality of electrical connectors.

As shown in the first, third and fourth figures, each of the clamping arms 24 includes an extension The portion 241 extends downward from the fixing portion 21, and a clamping portion 242 extends downward from the extending portion 241. The extending portion 241 is located in the receiving hole 13, in the embodiment, the connection The arm 25 is coupled to the two extensions 241. The clamping portion 242 extends below the bottom surface 12 and is located in the gap 15. When the solder ball 3 is loaded into the receiving space 16, the clamping portion 242 is clamped to the tin. At the diameter of the ball 3, the gripping arm 24 is opened by the solder ball 3 and elastically deformed outwardly within the gap 15. The clamping portion 242 is clamped on opposite sides of the solder ball 3 in the direction of the board surface thereof, and the bump 14 is abutted against the solder ball 3 in a direction perpendicular to the board surface. On the opposite sides, the clamping arm 24 and the protrusion 14 together define the receiving space 16 to tightly fix the solder ball 3. The blocking surface 141 is disposed toward the gap 15 and is located at two sides of the clamping portion 242. The blocking surface 141 can block the clamping portion 242 to prevent it from being in the thickness direction. The displacement is such that the two clamping arms 24 are not misaligned or skewed, thereby ensuring that the two clamping arms 24 can be firmly clamped to the diameter position of the solder ball 3. The distance between the two stop faces 141 is slightly larger than the thickness of the clamp arm 24, so that the clamp arm 24 can be conveniently accessed into the gap 15 or by the stop face 141. Stop. Preferably, the distance between the clamping arm 24 and the blocking surface 141 is smaller than the thickness of the clamping arm 24, and when the clamping arm 24 is stressed, its displacement in the thickness direction will It is blocked by the stop surface 141 without misalignment or distortion. The bottom end of the clamping portion 242 protrudes toward each other by a hook portion 244 that enters the solder ball 3 to fix the solder ball 3.

As shown in the first and fifth figures, when the electrical connector is assembled, the terminal 2 is inserted into the receiving hole 13 from the top to the bottom, and the fixing portion 21 is fixed to the inner wall of the receiving hole 13. The clamping portion 242 extends from the bottom surface 12 and is located in the gap 15 , and the blocking surface 141 is located on both sides of the thickness direction of the clamping portion 242 , and then the solder ball 3 is Load the bottom up In the nano space 16, the solder ball 3 spreads the clamping portion 242 to elastically deform in a direction perpendicular to the thickness of the plate, and when the solder ball 3 is loaded upward to abut against the protruding portion 17, The two sides of the solder ball 3 are clamped by the clamping arm 24, and the opposite sides abut against opposite sides of the bump 14. The bump 14 and the The clamp arm 24 collectively holds the solder ball 3, and the hook portion 244 penetrates into the solder ball 3 to stably hold it in the accommodation space 16 to prevent it from falling. In the process in which the solder ball 3 is opened by the clamping arm 24, if the clamping arm 24 is moved or deformed in a direction perpendicular to its thickness, the movement is blocked by the blocking surface 141. Preventing misalignment or distortion or skew between the two clamping arms 24.

In summary, the creative electrical connector has the following beneficial effects:

(1) A connecting arm 25 is connected between the two clamping arms 24 to the two clamping arms 24. When the clamping arms 24 clamp the solder balls 3, the clamping arms 24 are The solder ball 3 is stretched, and the clamping arm 24 is elastically deformed outwardly, and the fulcrum of the deformation is moved downward from the fixing portion 21 to the connection between the connecting arm 25 and the clamping arm 24, The force arm is made shorter, preventing the grip arm 24 from being fatigued.

(2) The connecting arm 25 includes two connecting portions 251 respectively connected to the two clamping arms 24, and the two connecting portions 251 form an angle between the two clamping arms 24 by the solder balls 3 When the tension is extended, the connecting arm 25 is opened, and the opening displacement of the two clamping arms 24 is restricted to prevent excessive outward deformation. The clamping arm 24 is not fatigued due to excessive elastic deformation. A good elastic clamping effect can be maintained, so that the solder ball 3 can be firmly held, thereby ensuring the soldering quality of the electrical connector.

(3) The blocking surface 141 is disposed toward the gap 15 and is located at two sides of the clamping portion 242. The blocking surface 141 can block the clamping portion 242 to prevent it from being thick. direction The displacement of the second clamping arm 24 is not misaligned or skewed, thereby ensuring that the two clamping arms 24 can be firmly clamped to the diameter position of the solder ball 3.

The above detailed description is only for the description of the preferred embodiments of the present invention, and is not intended to limit the scope of the patents of the present invention. Therefore, any equivalent technical changes made by the present specification and the illustrated contents are included in the scope of the patent of the present invention. Inside.

1‧‧‧ Ontology

13‧‧‧ receiving holes

16‧‧‧ accommodation space

17‧‧‧Protruding

2‧‧‧ terminals

21‧‧‧ Fixed Department

23‧‧‧Connecting Department

24‧‧‧Clamping arm

241‧‧‧Extension

242‧‧‧Clamping Department

244‧‧‧ hook

25‧‧‧Connecting arm

251‧‧‧Connecting Department

3‧‧‧ solder balls

Claims (11)

An electrical connector, comprising: a body, the body is provided with a plurality of receiving holes extending through the body from top to bottom; at least one terminal, the terminal has a fixing portion fixed in the receiving hole The two clamping arms extend downward from the fixing portion for clamping a solder ball, and a connecting arm is connected between the two clamping arms to the two clamping arms. The electrical connector of claim 1, wherein the connecting arm is located below the fixing portion and spaced apart from the fixing portion. The electrical connector of claim 1, wherein the connecting arm comprises two connecting portions respectively connected to the two clamping arms, and an angle is formed between the two connecting portions. The electrical connector of claim 1, wherein the clamping arm is in the same plane as the fixing portion. The electrical connector of claim 1, wherein the bottom of the clamping arm protrudes toward each other with a hook portion that enters the solder ball. The electrical connector of claim 1, wherein the clamping arm includes an extending portion extending downward from the fixing portion, and a clamping portion extending downward from the extending portion, the clip The holding portion is clamped to the solder ball. The electrical connector of claim 6, wherein the connecting arm is coupled to the two extensions. The electrical connector of claim 1, wherein the bottom surface of the body protrudes downwardly from at least two protrusions, the two protrusions have a gap therebetween, and the clamping arm protrudes from the bottom surface of the body. It can be deformed within the gap. The electrical connector of claim 8, wherein each of the bumps is provided with a stop surface facing the gap, and the stop surface can block the clamp arm from being in a plate thickness direction Move on. The electrical connector of claim 9, wherein the protrusions are recessed from the blocking surface away from each other, and the recesses together with the clamping arms form a The accommodation space is for accommodating the solder ball. The electrical connector of claim 1, wherein the terminal further has two contact portions extending upward from the fixing portion, and the two contact portions are laterally bent and extended toward each other.