CN209860204U

CN209860204U - Electrical connector

Info

Publication number: CN209860204U
Application number: CN201920503514.7U
Authority: CN
Inventors: 黄常伟
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2018-08-17
Filing date: 2019-04-12
Publication date: 2019-12-27
Anticipated expiration: 2029-04-12

Abstract

The utility model discloses an electric connector, including a body, a plurality of accepting holes run through the body from top to bottom, a plurality of terminals correspond and accept in the accepting hole, this terminal has a contact site, from contact site downwardly extending a holding portion be used for being fixed in the accepting hole with the terminal, the contact site includes a head, a neck and a basal portion, the width of basal portion is greater than or equal to the width of head, be equipped with a contact arm on the basal portion, a clamping part respectively extends downwards in the head both sides, when the chip module inserts, clamping part and contact arm contact participating in of chip module jointly. The base of the terminal of the design provides enough width for stamping to form the contact arm, so that the strength of the base is increased, the damage to the base in the stamping process is avoided, and the cost is saved.

Description

Electrical connector

[ technical field ] A method for producing a semiconductor device

The present invention relates to an electrical connector, and more particularly to an electrical connector electrically connected to a chip module.

[ background of the invention ]

With the development of scientific technology nowadays, the requirements for electrical connectors are higher and higher, and it is necessary to not only improve the transmission rate of the electrical connectors, but also improve the stability of signal transmission of the electrical connectors. A conventional electrical connector electrically connected to a chip module includes a body, a plurality of receiving holes penetrating through upper and lower surfaces of the body, a plurality of terminals correspondingly installed in the receiving holes, the terminals having a top portion, two clamping portions extending forward and downward from two sides of the top portion, a base portion extending downward from the top portion and narrower than the top portion, and a contact arm formed by forward stamping on the base portion and located between the two clamping portions and contacting with a pin of the chip module together with the two clamping portions. The design that the base part is narrower than the top part is to ensure that the base part can have certain elasticity when the terminal is butted with the pin, but because the width of the base part of the terminal is narrower, the material at two sides of the contact arm is too little to break in the process of stamping the base part to form the contact arm, so that the material is wasted, the manufacturing cost is increased, and in use, because the chip module is inserted, the pin of the chip module is in contact with the terminal under stress, and the base part of the terminal is easily damaged due to the stress, so that the signal transmission of the electric connector is influenced.

Therefore, in view of the above problems, a new electrical connector needs to be designed to solve the above drawbacks.

[ Utility model ] content

Problem to exist among the background art the utility model relates to a prevent that terminal from damaging and guarantee the electric connector of signal stable transmission.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an electrical connector for electrically connecting a chip module having a plurality of pins, comprising: the body is used for upwards bearing the chip module and is provided with a plurality of accommodating holes which vertically penetrate through the body; the plurality of terminals are correspondingly accommodated in the plurality of accommodating holes, each terminal is provided with a fixing part for fixing the terminal in the accommodating hole, the fixing part extends upwards to form a contact part which is only accommodated in the accommodating hole and is not contacted with the wall surface of the accommodating hole, the contact part comprises a base part, a neck part and a head part which sequentially extend upwards from the fixing part, the neck part is narrower than the head part, the base part is larger than or equal to the width of the head part, the base part is provided with a contact arm, two clamping parts extend downwards from two sides of the head part, and when the pin enters the corresponding accommodating hole, the two clamping parts and the contact arm jointly clamp the corresponding pin.

Further, a vertical plane is defined to divide the body into a first mounting area and a second mounting area, the contact arm of the terminal located in the first mounting area extends in the direction of the vertical plane, and the contact arm of the terminal located in the second mounting area extends in the direction of the vertical plane.

Further, the terminals located in the first mounting region and the terminals located in the second mounting region are symmetrically distributed about the vertical plane.

Furthermore, a welding part is extended from the fixing part and is contacted with the solder, the welding part is provided with a first arm and a second arm which are opposite, the first arm and the second arm are respectively extended with a stopping part, and the two stopping parts are matched to limit the solder to move upwards.

Further, the two clamping parts are mutually close from top to bottom.

Furthermore, the free end of the contact arm and the free ends of the two clamping parts are positioned at the same height.

Furthermore, a through hole is formed in the base portion, and the contact arm extends from the base portion towards the inside of the through hole and bends towards the direction close to the clamping portion.

Further, the base portion may be biased within the receiving cavity when the terminal is forced into contact with the pin.

Furthermore, two sides of the fixing part are respectively provided with a protruding part, and the protruding parts are in interference fit with the accommodating holes to fix the terminals.

Furthermore, two grooves are concavely arranged on the inner wall of the accommodating hole, two limiting parts extend from two sides of the fixing part, and the two limiting parts are correspondingly accommodated in the two grooves to limit the upward movement of the terminal.

Compared with the prior art, the utility model discloses an electric connector has following beneficial effect:

the utility model discloses an electric connector's terminal has a head, a neck and a basal portion, and the basal portion is wider than head and neck, and in the in-service use, the basal portion of widening provides sufficient region for the punching press forms the contact arm, so improved the atress intensity of basal portion for the difficult emergence fracture of basal portion, its thinner neck has improved the elastic force of terminal moreover, has guaranteed the toughness of terminal.

[ description of the drawings ]

Fig. 1 is a three-dimensional cross-sectional view of the electrical connector of the present invention before being mated with a chip module;

fig. 2 is another perspective cross-sectional view of the electrical connector of the present invention;

fig. 3 is an exploded perspective view of the electrical connector of fig. 1;

fig. 4 is a top view of the electrical connector of the present invention;

FIG. 5 is a perspective view of the terminal of FIG. 3;

FIG. 6 is a front view of FIG. 1;

FIG. 7 is a schematic diagram of the chip module of FIG. 6 after mating with an electrical connector;

fig. 8 is a cross-sectional view taken along line a-a of fig. 7.

Detailed description of the embodiments reference is made to the accompanying drawings in which:

electrical connector 10	Chip module 100	Pin 101
			Body 200	Upper surface 201	Lower surface 202
Receiving hole 203	Inner wall 204 of the receiving hole	Groove 205
			First mounting region 206	Second mounting region 207	Vertical plane P
Terminal 1	Contact part 11	Head 111
			Clamping part 1111	Neck 112	Base 113
Through-hole 1131	Contact arm 1132	Side arm 1133
			Holding part 12	Projection 121	Position limiting part 122
Welded part 13	First arm 131	Second arm 132
			Stopper 133	Solder 2

[ detailed description ] embodiments

The invention will now be described in further detail with reference to specific embodiments and figures for a better understanding of the invention.

For convenience of description, the X axis is defined as the front-back direction, the Y axis as the left-right direction, and the Z axis as the up-down direction.

As shown in fig. 1, fig. 2 and fig. 3, in order to electrically connect an electrical connector 10 of the present invention to a chip module 100 having a plurality of pins 101, the electrical connector 10 includes a body 200, the body 200 has an upper surface 201 and a lower surface 202, a plurality of receiving holes 203 penetrate through the upper surface 201 and the lower surface 202 of the body 200, a plurality of terminals 1 are correspondingly received in the plurality of receiving holes 203, and the receiving holes 203 have a receiving hole inner wall 204. The receiving holes 203 are provided with two grooves 205, one of the grooves 205 is formed by being recessed from the inner wall 204 of the receiving hole, two adjacent grooves 205 of two adjacent receiving holes 205 are communicated with each other in the front-rear direction for restricting the terminal 1 from moving upward, and the plurality of grooves 205 communicate a plurality of receiving holes 203 in the same row on the Y axis with each other.

As shown in fig. 4, the body 200 defines a vertical plane P, and the body 200 is divided into a first mounting region 206 and a second mounting region 207, the first mounting region 206 and the second mounting region 207 are oppositely disposed at left and right sides of the terminal 1, wherein the first mounting region 206 is located at the left side of the body 200, and the second mounting region 207 is located at the right side of the body 200. In this embodiment, the first mounting region 206 and the second mounting region 207 have the same size, and the terminals 1 located in the first mounting region 206 and the terminals 1 located in the second mounting region 207 are symmetrically distributed about the vertical plane P.

As shown in fig. 3 and 5, the terminal 1 according to the present invention is a preferred embodiment. The terminal 1 has a contact portion 11, and the contact portion 11 is disposed near the inner wall 204 of the receiving hole without contacting the inner wall. The contact portion 11 has a head portion 111, a neck portion 112 and a base portion 113 sequentially extending from the head portion 111 downward, the head portion 111 is substantially U-shaped, the neck portion 112 is narrower than the head portion 111, the base portion 113 is wider than the head portion 111 and the neck portion 112, two clamping portions 1111 extend downward from both sides of the head portion 111, and the two clamping portions 1111 are close to each other from top to bottom, i.e., the two clamping portions 1111 are tapered.

As shown in fig. 3 and 5, the base portion 113 is provided with a through hole 1131, a contact arm 1132 is formed by bending the base portion 113 toward the inside of the through hole 1131 and toward the clamping portion 1111, and two side arms 1133 are formed on two sides of the through hole 1131 by the base portion 113. In the present embodiment, the contact arm 1132 is preferably formed by a press forming technique, and in order to ensure the strength of the base portion 113 in actual use after stamping, the base portion 113 is designed to be wider than the head portion 111, so that after the contact arm 1132 is formed by stamping, the two side arms 1133 of the base portion 113 are not too thin, the strength of the two side arms 1133 is increased, and the base portion 113 is prevented from being damaged in the manufacturing process and the use process. The contact arm 1132 and the two clamping portions 1111 abut against the pin 101 from different directions, and a free end of the contact arm 1132 and a free end of the clamping portion 1111 are located at the same height.

As shown in fig. 3 and 5, a holding portion 12 extends downward from the contact portion 11, and a plate surface of the holding portion 12 abuts against the inner wall 204 of the receiving hole. Two sides of the holding portion 12 are respectively provided with a protrusion 121, and the protrusion 121 is in interference fit with the inner wall 204 of the receiving hole, so that the terminal 1 is fixed in the receiving hole 203.

As shown in fig. 3 and 5, two position-limiting portions 122 and a soldering portion 13 extend downward from the holding portion 12, the soldering portion 13 is located between the two position-limiting portions 122, and when the terminal 1 is mounted in the receiving hole 203, the position-limiting portions 122 are correspondingly received in the grooves 205 (see fig. 8) to limit the upward movement of the terminal 1.

As shown in fig. 3 and fig. 5, the soldering portion 13 is used for fixing a solder 2, the soldering portion 13 has a first arm 131 and a second arm 132 extending in a horizontal direction, the first arm 131 and the second arm 132 are disposed opposite to each other and clamp the corresponding solder 2 together, in this embodiment, the solder 2 is a solder ball. A stopper 133 extends upward from each of the first arm 131 and the second arm 132, the stopper 133 faces downward toward the solder 2, the stopper 133 is used for stopping the solder 2 from moving upward to prevent empty soldering, and one surface of the stopper 133 facing the solder 2 is formed in a circular arc shape to fit the shape of the solder 2.

As shown in fig. 6 and 8, before the chip module 100 is inserted into the body 200, the contact portion 11 does not contact the inner wall 204 of the receiving hole.

As shown in fig. 7 and 8, when the chip module 100 is inserted into the body 200, the pin 101 contacts the contact arm 1132 and the two clamping portions 1111. At this time, the contact arms 1132 of the terminal 1 distributed in the first mounting region 206 (see fig. 4) abut against the pins 101 rightward in the direction of the Y-axis toward the vertical plane P, so that the contact portions 11 distributed in the first mounting region 206 are offset leftward; the contact arms 1132 of the terminal 1 distributed in the second mounting region 207 (see fig. 4) abut the pins 101 leftwards in the direction of the Y axis towards the vertical plane P, so that the contact portions 11 distributed in the second mounting region 207 are offset rightwards. The two clamping portions 1211 abut against the pins 101 to open outward, and as the chip module 100 is further inserted, the acting force applied to the contact arms 1132 gradually increases and drives the contact portions 11 to deflect, and the contact portions 11 of the terminals 1 located in the first mounting region 206 deflect to the left close to the inner wall 204 of the receiving hole and finally abut against the inner wall 204 of the receiving hole; the contact portion 11 of the terminal 1 located in the second mounting region 207 is deflected rightward close to the housing hole inner wall 204, and finally abuts against the housing hole inner wall 204.

To sum up the utility model discloses an electric connector has following gain effect:

1. the neck portion 112 of the terminal 1 is narrower than the head portion 111 and the base portion 113, so as to provide elasticity before the insertion of the pin 101, absorb tolerance of the pin 101, ensure stable signal transmission, and when the pin 101 enters the receiving hole 203 to contact the terminal 1, the narrower neck portion 112 can buffer the acting force of the pin 101 on the terminal 1, improve toughness of the terminal 1, and prolong the service life of the terminal 1.

2. The base portion 113 is wider than the head portion 111 and the neck portion 112, so that there is enough area on the base portion 113 for stamping the contact arm 1132, the manufacturing is convenient, and the two side arms 1133 of the base portion 113 are not too thin after stamping, the base portion 113 is prevented from being broken in the manufacturing and using processes, the production cost is saved, the use strength of the terminal 1 is improved, and the stable transmission of signals is ensured.

3. The contact arm 1132 of the terminal 1 located in the first mounting region 206 abuts the pin 101 in the Y-axis direction to the right, the contact arm 1132 of the terminal 1 located in the second mounting region 207 abuts the pin 101 in the Y-axis direction to the left, and the terminal 1 is seated in this manner, when the pins 101 are inserted into the receiving holes 203 to contact the terminals 1, the acting force of the terminals 1 in the first mounting region 206 abutting against the pins 101 is opposite to the acting force of the terminals 1 in the second mounting region 207 abutting against the pins 101, and the acting forces are offset, so that the pins 101 are prevented from being acted by only one direction of acting force during abutting, the insertion force of the chip module 100 is reduced, the chip module 100 can be ensured to be inserted smoothly, and the pins 101 are prevented from being damaged due to deformation caused by force.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all the equivalent technical changes using the description and drawings of the present invention are included in the scope of the present invention.

Claims

1. An electrical connector for electrically connecting a chip module having a plurality of pins, comprising:

the body is used for upwards bearing the chip module and is provided with a plurality of accommodating holes which vertically penetrate through the body;

the plurality of terminals are correspondingly accommodated in the plurality of accommodating holes, each terminal is provided with a fixing part for fixing the terminal in the accommodating hole, the fixing part extends upwards to form a contact part which is only accommodated in the accommodating hole and is not contacted with the wall surface of the accommodating hole, the contact part comprises a base part, a neck part and a head part which sequentially extend upwards from the fixing part, the neck part is narrower than the head part, the base part is larger than or equal to the width of the head part, the base part is provided with a contact arm, two clamping parts extend downwards from two sides of the head part, and when the pin enters the corresponding accommodating hole, the two clamping parts and the contact arm jointly clamp the corresponding pin.

2. The electrical connector of claim 1, wherein: defining a vertical plane to divide the body into a first mounting region and a second mounting region, wherein the contact arm of the terminal in the first mounting region extends in the direction of the vertical plane, and the contact arm of the terminal in the second mounting region extends in the direction of the vertical plane.

3. The electrical connector of claim 2, wherein: the terminals located in the first mounting region are symmetrically distributed with respect to the vertical plane with respect to the terminals located in the second mounting region.

4. The electrical connector of claim 1, wherein: extending a welding part from the fixing part to be in contact with the solder, wherein the welding part is provided with a first arm and a second arm which are opposite, the first arm and the second arm are respectively extended with a stopping part, and the two stopping parts are matched to limit the solder to move upwards.

5. The electrical connector of claim 1, wherein: the two clamping parts are mutually close from top to bottom.

6. The electrical connector of claim 1, wherein: the free ends of the contact arms and the free ends of the two clamping parts are positioned at the same height.

7. The electrical connector of claim 1, wherein: the base part is provided with a through hole, and the contact arm extends towards the inside of the through hole from the base part and bends towards the direction close to the clamping part.

8. The electrical connector of claim 1, wherein: the base portion can be deflected within the receiving cavity when the terminal is forced into contact with the pin.

9. The electrical connector of claim 1, wherein: and two sides of the fixing part are respectively provided with a protruding part, and the protruding parts are in interference fit with the accommodating holes to fix the terminals.

10. The electrical connector of claim 1, wherein: the inner wall of the accommodating hole is concavely provided with two grooves, two sides of the fixing part extend to form two limiting parts, and the two limiting parts are correspondingly accommodated in the two grooves to limit the terminal to move upwards.