CN109193192B

CN109193192B - Electrical connector

Info

Publication number: CN109193192B
Application number: CN201810969849.8A
Authority: CN
Inventors: 何建志
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2018-08-24
Filing date: 2018-08-24
Publication date: 2020-11-24
Anticipated expiration: 2038-08-24
Also published as: CN109193192A

Abstract

The invention discloses an electric connector, comprising: the body is provided with a plurality of accommodating holes, and at least one accommodating hole is provided with a first wall surface and a convex part extending forwards from the first wall surface; a plurality of conductive terminals correspondingly accommodated in the accommodating holes, wherein at least one conductive terminal is provided with a base part, and two arms which are bent and extended from two sides of the base part jointly clamp the convex part so that the conductive terminal is fixedly held in the accommodating hole; the containing hole is also provided with at least one limiting part for limiting the downward displacement of the conductive terminal, the arm part clamps the convex part from two sides instead of directly pressing the convex part in the assembling direction of the conductive terminal, the strength requirement of the convex part is reduced, and the convex part is not easy to deform along the assembling direction. The limiting part is arranged to limit the movement of the conductive terminal in the assembling direction of the conductive terminal, so as to prevent the conductive terminal from excessively entering the accommodating hole and prevent the arm part from pulling the convex part to deform the convex part.

Description

Electrical connector

Technical Field

The present invention relates to an electrical connector, and more particularly to an electrical connector for electrically connecting a circuit board and a chip module.

Background

Chinese patent application No. CN200920306502.1 discloses an electrical connector for electrically connecting a circuit board and a chip module, which includes: the conductive terminal comprises a main body part, an elastic part extending upwards from the main body part and a tail part extending from the bottom of the main body part, wherein the tail part comprises a pair of extension arms which are arranged in parallel and bent, the extension arms comprise a receiving arm extending horizontally after the main body part is bent and a clamping arm extending vertically and downwards from the tail end of the receiving arm, the insulating body is provided with a plurality of terminal receiving grooves for receiving the conductive terminals, the terminal receiving grooves are provided with convex parts for supporting the conductive terminals, the convex parts are approximately L-shaped, the top surfaces of the terminal receiving arms support the conductive terminals, and the two clamping arms penetrate through the bottom surfaces of the convex parts and protrude two clamping parts for clamping the bottom surfaces to prevent the conductive terminals from upwards withdrawing from the terminal receiving grooves.

The convex part of the electric connector needs to support the conductive terminal upwards to prevent the conductive terminal from moving out of the terminal accommodating groove downwards, and needs to clamp the clamping part of the conductive terminal downwards to prevent the conductive terminal from moving out of the terminal accommodating groove upwards.

Therefore, there is a need for an improved electrical connector that overcomes the above problems.

Disclosure of Invention

In response to the problems encountered in the background art, the present invention provides

In order to achieve the purpose, the invention adopts the following technical means:

an electrical connector, comprising: the body is provided with a plurality of accommodating holes, and at least one accommodating hole is provided with a first wall surface and a convex part extending forwards from the first wall surface; a plurality of conductive terminals correspondingly accommodated in the accommodating holes, wherein at least one conductive terminal is provided with a base part, and two arms formed by bending and extending two sides of the base part clamp the convex part together so that the conductive terminal is fixed in the accommodating hole; the accommodating hole is also provided with at least one limiting part for limiting the downward displacement of the conductive terminal.

Furthermore, two second side walls are respectively connected with two sides of the first wall surface, the convex parts are respectively provided with two fixing parts protruding towards the second side walls, and the arm parts are abutted to the fixing parts.

Further, the upper end of the convex part is provided with at least one guide part.

Further, each arm portion includes a curved portion and an abutting portion, and the abutting portions abut against both sides of the protruding portion.

Further, the two abutting portions are parallel to each other and perpendicular to the base portion.

Further, the two abutting parts and the base part respectively form an included angle.

Further, the included angle is an acute angle.

Further, the projection abuts the base.

Furthermore, the accommodating hole is provided with a third wall surface positioned in front of the convex part, the third wall surface protrudes towards the first wall surface to form two limiting parts, and the base part is positioned between the two limiting parts.

Furthermore, the conductive terminal comprises two blocking parts which are convexly arranged on two sides of the base part, and the two blocking parts are positioned above the two arm parts and the two limiting parts.

Furthermore, the base extends downwards to form a guide connection part, the guide connection part comprises two bent and extended clamping parts for clamping a solder, and the two clamping parts and the two arm parts extend in the same direction.

Furthermore, the conductive terminal comprises a contact elastic arm which is bent upwards from the base part and extends, the contact elastic arm and the arm part extend in the same direction, a bent part is formed after the contact elastic arm and the arm part extend for a certain distance, and then the contact elastic arm and the arm part extend in opposite directions relative to the extending direction of the arm part.

Further, the projection includes a top surface and a bottom surface, and the arm is located between the top surface and the bottom surface.

Further, the arm portion does not contact the housing hole.

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

the arm part clamps the convex part from two sides instead of directly pressing the convex part in the assembling direction of the conductive terminal, so that the strength requirement of the convex part is reduced, and the convex part is not easy to deform along the assembling direction. The limiting part is arranged to limit the movement of the conductive terminal in the assembling direction of the conductive terminal, so that the conductive terminal is prevented from excessively entering the accommodating hole, and the arm part is prevented from pulling the convex part to deform the convex part.

[ description of the drawings ]

FIG. 1 is a cross-sectional exploded view of a first embodiment of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of FIG. 3;

FIG. 5 is a cross-sectional view of a second embodiment of the present invention;

fig. 6 is an enlarged view of fig. 5.

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

body 1	Receiving hole 11	Abdication groove 111	Convex part 12
				Connecting part 121	Holding parts 122, 122'	Terminal part	123	Guide part 124
Top surface 125	Bottom surface 126	Stopper 13	Supporting block 14
				Bevel 141	Conductive terminal 2	Base 21	Arm part 22
Abutment portion 221, 221'	Bend 222	Lead-in part 23	Clamping part 231
				Hook 232	Stop part 24	Connecting part 25	Contact spring arm 26
Bent part 261	Solder 3	Chip module A	Circuit board B
				First wall W1	Second side wall W2	Third wall W3

[ detailed description ] embodiments

For a better understanding of the objects, structure, features, and functions of the invention, reference should be made to the drawings and detailed description that follow.

Fig. 1 to 4 show a first embodiment of an electrical connector according to the present invention, for connecting a chip module a to a circuit board B. The electric connector comprises a body 1 and a plurality of conductive terminals 2 fixed on the body 1.

As shown in fig. 1 to 3, the body 1 is made of an insulating material and has a plurality of receiving holes 11 vertically penetrating through the body 1 for correspondingly receiving and holding the plurality of conductive terminals 2. Each of the receiving holes 11 has a first wall W1, two second sidewalls W2 connected to two sides of the first wall W1, and a protrusion 12 extending forward from the first wall W1, the protrusion 12 includes a connecting portion 121 connected to the first wall W1, two holding portions 122 protruding toward the two second sidewalls W2 at two sides of the connecting portion 121 respectively to abut against the conductive terminals 2, and a distal portion 123 formed by the connecting portion 121 extending forward continuously, so that the protrusion 12 is in a cross shape. An abdicating groove 111 is formed between the holding portion 122 and the first wall W1 for providing abdicating space for the conductive terminal 2 during the assembling process of the conductive terminal 2. The convex portion 12 further has a plurality of guiding portions 124, the guiding portions 124 are guiding slopes, wherein a part of the guiding portions 124 is located above the holding portion 122, and another part of the guiding portions 124 is located above the terminal portion 123. The convex portion 12 further comprises a top surface 125 and a bottom surface 126, wherein the bottom surface 126 coincides with the lower surface of the body 1. The receiving hole 11 further has a third wall W3 located in front of the protrusion 12, and the third wall W3 is formed with two limiting portions 13 protruding backwards to prevent the conductive terminal 2 from moving down in the receiving hole 11 excessively. The upper surface of the body 1 further has a plurality of supporting blocks 14 protruding upwards for supporting the chip module a, and each supporting block 14 is adjacent to one of the receiving holes 11 and has an oblique angle 141.

As shown in fig. 1 and 2, the conductive terminals 2 are assembled to the body 1 from top to bottom, each conductive terminal 2 has a base portion 21, the base portion 21 is in a flat shape and is located between the two position-limiting portions 13, as shown in fig. 4, the base portion 21 and the end portion 123 are spaced from each other, and in other embodiments, the base portion 21 may also abut against the end portion 123 to improve the holding force of the conductive terminal 2. Two sides of the base 21 are bent and extended to form two symmetrical arm portions 22 for clamping the protrusion 12 and fixing the conductive terminal 2. In the present invention, the arm portion 22 does not contact the housing hole 11. The arm portion 22 is located between the top surface 125 and the bottom surface 126 of the projection 12, and increases the contact area between the arm portion 22 and the projection 12. Each arm 22 includes an abutting portion 221 for abutting against the retaining portion 122, and a curved portion 222, in this embodiment, the abutting portion 221 is flat and perpendicular to the base portion 21, and the contact surfaces of the abutting portions 221 and the retaining portions 122 are parallel to the assembling direction, so that the acting forces applied by the conductive terminals 2 on the two sides of the protrusion 12 can be completely offset, and therefore, the protrusion 12 does not generate excessive stress, the deformation of the protrusion 12 is avoided, and the deformation of the body 1 caused by the accumulation of the excessive stress of the protrusions 12 is also avoided.

As shown in fig. 1 and 2, the base portion 21 extends downward to form a guiding portion 23 beyond the bottom surface of the body 1, the guiding portion 23 includes two bent and extended clamping portions 231, the two clamping portions 231 and the two arm portions 22 extend in the same direction to clamp a solder 3, the end of each clamping portion 231 is bent upward to form a hook portion 232, which can block the lower surface of the body 1 to limit the conductive terminal 2 from moving upward and exiting the receiving hole 11.

As shown in fig. 1 and 2, the base 21 protrudes above the arm 22 toward the two second sidewalls W2 to form two blocking portions 24, and the edge of the blocking portion 24 is arc-shaped and located above the limiting portion 13 and blocking the limiting portion 13 to limit the conductive terminal 2 from moving downward, so as to prevent the conductive terminal 2 from being excessively inserted into the receiving hole 11 and being withdrawn from the receiving hole 11 during the assembling process.

As shown in fig. 1 and fig. 2, one of the stop portions 24 extends upward to form a connecting portion 25 for connecting the terminal strip, and the other stop portion 24 is bent upward to form a contact spring arm 26 for contacting the chip module a. When the contact elastic arm 26 extends from bottom to top, the contact elastic arm 26 extends in the same direction as the arm 22, and after a certain distance, a bent portion 261 is formed, and then extends in the opposite direction with respect to the extending direction of the arm 22, and finally passes through the plane of the base 21.

As shown in fig. 5 and 6, a second embodiment of the electrical connector of the present invention is different from the first embodiment in that the two abutting portions 221 'are not perpendicular to the base portion 21, but are deflected to form an acute angle between the two abutting portions 221' and the base portion 21, and correspondingly, the two holding portions 122 'engaged with the two abutting portions 221' are inclined surfaces. With this arrangement, the contact area between the abutting portion 221 ' and the holding portion 122 ' can be increased without increasing the width and thickness of the holding portion 122 ', thereby increasing the holding force therebetween.

In summary, the electrical connector of the present invention has the following advantages:

1. the arm 22 clamps the protrusion 12 from both sides, instead of directly pressing the protrusion 12 in the assembly direction of the conductive terminal 2, so that the protrusion 12 is not easily deformed in the assembly direction, and the strength requirement of the protrusion 12 is reduced. The limiting portion 13 is further provided to limit the movement of the conductive terminal 2 in the assembling direction of the conductive terminal 2, so as to prevent the conductive terminal 2 from excessively entering the accommodating hole 11, and prevent the arm 22 from pulling the protrusion 12 to deform the protrusion 12.

2. The two abutting portions 221 are symmetrical, and the contact surface between each abutting portion 221 and each holding portion 122 is parallel to the assembly direction, so that the acting force applied by the conductive terminal 2 on the two sides of the protrusion 12 can be completely offset, the protrusion 12 does not generate excessive stress, the deformation of the protrusion 12 is avoided, and the deformation of the body 1 caused by the accumulation of the excessive stress of the plurality of protrusions 12 is also avoided.

3. The two abutting portions 221 'respectively form an acute angle with the base portion 21, and the two holding portions 122' cooperating with the two abutting portions 221 'are inclined planes, so that the contact area between the abutting portions 221' and the holding portions 122 'is increased on the premise of not increasing the width and the thickness of the holding portions 122', and further the holding force between the two portions is increased.

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 technical changes that can be made by applying the present specification and drawings are included in the scope of the present invention.

Claims

1. An electrical connector, comprising:

the body is provided with a plurality of accommodating holes, and at least one accommodating hole is provided with a first wall surface and a convex part extending forwards from the first wall surface;

the conductive terminals are correspondingly accommodated in the accommodating holes, at least one conductive terminal is provided with a base part, two arms are formed by bending and extending backwards from the left side and the right side of the base part to clamp the left side and the right side of the convex part together, and the arms only apply acting force to the convex part in the left-right direction to ensure that the conductive terminals are fixedly held in the accommodating holes;

the accommodating hole is also provided with at least one limiting part for limiting the downward displacement of the conductive terminal.

2. The electrical connector of claim 1, wherein: the two second side walls are respectively connected with the two sides of the first wall surface, the convex parts are respectively provided with two fixing parts protruding towards the second side walls, and the arm parts are abutted to the fixing parts.

3. The electrical connector of claim 1, wherein: the upper end of the convex part is provided with at least one guide part.

4. The electrical connector of claim 1, wherein: each arm part comprises a bending part and an abutting part, and the two abutting parts abut against two sides of the convex part.

5. The electrical connector of claim 4, wherein: the two abutting portions are parallel to each other and perpendicular to the base portion.

6. The electrical connector of claim 4, wherein: the two abutting parts and the base part respectively form an included angle.

7. The electrical connector of claim 6, wherein: the included angle is an acute angle.

8. The electrical connector of claim 1, wherein: the projection abuts the base.

9. The electrical connector of claim 1, wherein: the accommodating hole is provided with a third wall surface positioned in front of the convex part, the third wall surface protrudes towards the first wall surface to form two limiting parts, and the base part is positioned between the two limiting parts.

10. The electrical connector of claim 9, wherein: the conductive terminal comprises two blocking parts which are convexly arranged on two sides of the base part, and the two blocking parts are positioned above the two arm parts and the two limiting parts.

11. The electrical connector of claim 1, wherein: the base extends downwards to form a guide connection part, the guide connection part comprises two bent and extended clamping parts for clamping a solder, the two clamping parts and the two arm parts extend in the same direction, and the convex part limits the upward displacement of the solder.

12. The electrical connector of claim 1, wherein: the conductive terminal comprises a contact elastic arm which is bent upwards from the base part and extends, the contact elastic arm and the arm part extend in the same direction, a bent part is formed after the contact elastic arm and the arm part extend for a certain distance, and then the contact elastic arm and the arm part extend in the opposite direction relative to the extending direction of the arm part.

13. The electrical connector of claim 1, wherein: the projection includes a top surface and a bottom surface, and the arm is located between the top surface and the bottom surface.

14. The electrical connector of claim 1, wherein: the arm portion does not contact the housing hole.