CN110854561B

CN110854561B - Power supply terminal and electric connector

Info

Publication number: CN110854561B
Application number: CN201910974317.8A
Authority: CN
Inventors: 金左锋
Original assignee: Lotes Guangzhou Co Ltd
Current assignee: Lotes Guangzhou Co Ltd
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2021-06-18
Anticipated expiration: 2039-10-14
Also published as: CN110854561A

Abstract

The invention provides a power terminal and an electric connector, comprising: a metal plate; the elastic sheet groups are respectively fixed on the front side surface and the rear side surface of the metal plate, each elastic sheet group comprises a plurality of elastic sheets which are parallel front and back, each elastic sheet is provided with a fixing part, the fixing parts of each elastic sheet group are mutually fixed front and back, a plurality of elastic arms extend upwards from each fixing part and are arranged in a row along the left-right direction, each elastic arm is provided with a main body part which extends upwards from the fixing part, a gap is formed between two adjacent main body parts in front and back of each elastic sheet group, the main body part extends upwards to form a butting part, two butting parts adjacent front and back of each elastic sheet group are butted front and back through mutual acting force, the top surface of each elastic arm is provided with a butting area, and the butting areas of the two elastic sheet groups are butted upwards to the same; the invention avoids the phenomenon that the elastic arms are overlapped together at will to cause overlarge current to be heated and fused.

Description

Power supply terminal and electric connector

[ technical field ] A method for producing a semiconductor device

The present invention relates to a power terminal and an electrical connector, and more particularly, to a power terminal and an electrical connector capable of preventing the power terminal from being fused due to heat.

[ background of the invention ]

A power terminal of an electric connector is used for electrically connecting a chip module to a circuit board and comprises a plurality of separately molded and electrically conducted conducting strips. Each conducting strip is provided with a base part, the base parts of the conducting strips are arranged in front and back and are mutually fixed, a plurality of contact arms extend upwards from each base part and are arranged in a row along the left-right direction, and the contact arms are upwards abutted against the chip module. However, the contact arms of the front conductive plate may be randomly lapped on the contact arms of the rear conductive plate, so that during the contact process with the chip module, part of the contact arms are contacted with the chip module separately, and part of the contact arms are lapped together and then contacted with the chip module, which causes different impedances between the contact arms.

Therefore, it is necessary to design a power terminal and an electrical connector to overcome the above problems.

[ summary of the invention ]

The invention aims to provide a power terminal and an electric connector which are prevented from being fused due to heat generation.

In order to achieve the purpose, the power terminal adopts the following technical scheme:

a power terminal for electrically connecting a contact portion of a mating component, comprising: a metal plate; two shell fragment groups are fixed in respectively the leading flank and the trailing flank of metal sheet, each shell fragment group is including a plurality of shell fragments that parallel from beginning to end, each the shell fragment has a fixed part, each the fixed part of shell fragment group is along front and back reciprocal fixed, from each the fixed part upwards extends a plurality of elastic arms and arranges into one row along left right direction, the elastic arm has a main part certainly the fixed part upwards extends, each around in the shell fragment group adjacent two have the clearance between the main part, certainly the main part upwards extends and forms a butt portion, each the butt portion is through butt joint around the effort between each other around the adjacent two butt portions of shell fragment group, the top surface of elastic arm has a butt joint district, each a plurality of butt joint districts of shell fragment group are rectangular array, the butt joint district of two shell fragment groups upwards butt in the contact portion.

Furthermore, in the front and back adjacent two abutting parts of each elastic sheet group, the abutting part in front is protruded backwards to form a convex hull which is abutted against the front side surface of the abutting part in back, the protruded thickness of the convex hull is larger than the gap between the front and back adjacent two main body parts, the distance between the convex hull and the abutting area is smaller than the distance between the convex hull and the fixing part, and a gap is reserved between the convex hull and the abutting area.

Furthermore, each elastic sheet group comprises three elastic sheets, the convex hulls are convexly extended backwards on the front two elastic sheets, the front convex hulls and the back convex hulls of each elastic sheet group are arranged up and down, and the front convex hulls and the back convex hulls are at least partially overlapped along the projection in the front-back direction.

Further, the abutting portion is connected to a top surface of the elastic arm.

Further, in the two abutting parts adjacent to each other in the front and rear of each elastic sheet group, the abutting parts are inclined toward the adjacent abutting parts in the front and rear direction, and the inclined distance is greater than the gap between the two main body parts adjacent to each other in the front and rear direction.

Further, in the two adjacent front and rear abutting parts of each spring plate group, the front abutting part is inclined towards the rear abutting part so that the rear side surface of the front abutting part abuts against the front side surface of the rear abutting part, and the inclined distance along the front and rear direction is larger than the gap between the two adjacent front and rear main body parts.

Furthermore, each elastic sheet group comprises three elastic sheets, the abutting parts of the elastic sheets positioned on the front side and the rear side in each elastic sheet group are inclined towards the abutting part of the elastic sheet positioned in the middle, and the inclined distance of the inclined distance is greater than the gap between the two adjacent front and rear main body parts.

Furthermore, the butt joint element is provided with an inclined plane which is positioned in front of or behind the elastic sheet group, and the inclined plane pushes against the elastic arm, so that the elastic arm inclines towards the adjacent elastic arm, and the front and the back adjacent butt joint parts of each elastic sheet group are abutted.

Further, the main part includes a vertical section and certainly the first slope section of vertical section upwards just to the right slope, from first slope section upwards and right slope formation second slope section, the angle that the second slope section leaned to the right is less than the angle that first slope section leaned to the right and the length of second slope section is less than the length of first slope section, butt joint portion connects in second slope section.

Furthermore, in the fixing part of each group of elastic sheet groups, a convex part is protruded backwards from the front fixing part and welded on the front side surface of the rear fixing part.

Furthermore, the upper end of the metal plate is higher than the upper end of the fixing part, the metal plate is provided with a plurality of plug pins for being plugged in a circuit board, and the lower end of the elastic sheet is higher than the upper ends of the plug pins.

In order to achieve the purpose, the electric connector adopts the following technical scheme:

an electric connector is used for electrically connecting a butting element with a plurality of contact parts and comprises a plurality of power terminals and an insulating body, wherein the plurality of power terminals are in one-to-one corresponding contact with the plurality of contact parts, the insulating body is provided with a plurality of accommodating holes which penetrate through the insulating body from top to bottom, and each power terminal is correspondingly accommodated in one accommodating hole.

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

in each elastic piece group, the front elastic arm and the rear elastic arm are abutted together through the acting force between the abutting parts, so that the impedance between the elastic arms is ensured to be the same, the passing currents are the same, and the phenomenon that the elastic arms are overlapped together at will to cause the passing currents to be overlarge so as to generate heat and fuse is avoided.

[ description of the drawings ]

Fig. 1 is an exploded perspective view of a first embodiment of an electrical connector of the present invention;

fig. 2 is a perspective view of a power terminal of a first embodiment of the present invention;

FIG. 3 is an enlarged view of part A of FIG. 2

FIG. 4 is an exploded view of FIG. 2;

FIG. 5 is a left side view of FIG. 2;

FIG. 6 is a cross-sectional view of the first embodiment of the electrical connector;

fig. 7 is a left side view of one power terminal of the second embodiment of the present invention;

fig. 8 is a perspective view of a power terminal of a third embodiment of the present invention;

FIG. 9 is a front view of FIG. 8;

FIG. 10 is a left side view of FIG. 8;

fig. 11 is a front cross-sectional view of a fourth embodiment of the electrical connector of the present invention mated with a mating member;

fig. 12 is a cross-sectional view of a fourth embodiment of the electrical connector of the present invention mated with a mating member.

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

insulating body	1	Containing hole	11	Spring plate	2
						Fixing part	21	Convex part	211	Elastic arm	22
Main body part	221	Vertical section	2211	First inclined section	2212
						Second inclined section	2213	Abutting part	223	Convex hull	2231
Butt joint region	224	Metal plate	3	Plug-in pin	31
						Elastic sheet group	100a	Power supply terminal	100	Butt joint element	200
Contact part	200a	Inclined plane	200b

[ 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.

As shown in fig. 1 to 5, a first embodiment of the electrical connector of the present invention is used for electrically connecting a docking element 200 having a plurality of contact portions 200a to a circuit board (not shown), the electrical connector has an insulating body 1 and a power terminal 100 accommodated in the insulating body 1, the power terminal 100 may be a group, two groups, three groups or more (only four groups of power terminals 100 are shown in fig. 1), the power terminal 100 includes a metal plate 3, two spring plate groups 100a respectively fixed on a front side surface and a rear side surface of the metal plate 3, each spring plate 100a has three spring plates 2 juxtaposed in front and rear (each spring plate group 100a may also be two spring plates 2, four spring plates 2 and more); the metal plate 3 and each spring plate 2 are separately molded and are in contact with each other to be electrically conducted.

As shown in fig. 1, the insulating housing 1 is provided with a plurality of receiving holes 11 penetrating vertically, and each receiving hole 11 receives one of the power terminals 100.

As shown in fig. 2, 4 and 5, each spring plate 2 has a fixing portion 21, three fixing portions 21 of each spring plate group 100a are arranged in parallel along the front and back, a protruding portion 211 is protruded backward from the front fixing portion 21 and welded to the front side surface of the rear fixing portion 21, and two adjacent front and back protruding portions 211 are arranged in a left-right staggered manner; a plurality of elastic arms 22 extending upward from each of the fixing portions 21 are arranged in a row in the left-right direction, the elastic arms 22 have main body portions 221 extending upward from the fixing portions 21, two adjacent main body portions 221 in each of the elastic piece groups 100a are not in contact with each other with a gap therebetween, each main body portion 221 includes a vertical portion 2211 and a first inclined portion 2212 inclined upward and rightward from the vertical portion 2211, a second inclined portion 2213 is formed by inclining upward and rightward from the first inclined portion 2212, an angle at which the second inclined portion 2213 is inclined rightward is smaller than an angle at which the first inclined portion 2212 is inclined rightward and a length of the second inclined portion 2213 is smaller than a length of the first inclined portion 2212, an abutting portion 223 extends upward from the second inclined portion 2213, two abutting portions 223 adjacent to each front and rear of the elastic piece groups 100a abut against each other by an acting force therebetween in the front-rear direction in this embodiment, in the two abutting portions 223 adjacent to each other in the front and rear of each bullet group 100a, the abutting portions 223 are inclined toward the adjacent abutting portions 223 along the front and rear direction so as to abut against each other (specifically, the abutting portions 223 positioned at the front and rear sides among the three abutting portions 223 of each bullet group 100a are inclined toward the abutting portion 223 positioned at the middle), and the inclined distance is greater than the gap between the two main body portions 221 adjacent to each other in the front and rear direction, so that the two abutting portions 223 adjacent to each other in the front and rear direction interfere with each other, and therefore, a strong acting force is ensured to be provided between the two abutting portions 223 adjacent to each other in the front and rear direction, and thus, stable contact between; as shown in fig. 3, the abutting portion 223 is protruded with an arc surface to the left, and the docking area 224 is disposed on the arc surface, so that the connection between the docking area 224 and the contact portion 200a is an arc surface-to-plane docking, which makes the connection between the power terminal 100 and the docking element 200 more stable.

As shown in fig. 2 and 6, the metal plate 3 is held in the receiving hole 11, two insertion pins 31 (in other embodiments, the number of the insertion pins 31 may be 3 or more) are disposed at the lower portion of the metal plate 3 and are inserted into the circuit board (not shown), the lower end of the elastic piece 2 is higher than the upper end of the insertion pins 31, the upper end of the metal plate 3 is higher than the upper end of the fixing portion 21, and the thickness of the metal plate 3 is greater than the thickness of the elastic piece 2; the three fixing portions 21 of each spring plate group 100a are welded to each other and then welded to the upper portion of the metal plate 3 (in other embodiments, one fixing portion 21 of the three fixing portions 21 of each spring plate group 100a is welded to the metal plate 3, and then the other two fixing portions 21 are welded in sequence).

As shown in fig. 7, the second embodiment of the present invention is different from the first embodiment in that the front abutting portion 223 is inclined toward the rear abutting portion 223 so that the rear side surface of the front abutting portion 223 abuts against the front side surface of the rear abutting portion 223, that is, in the three abutting portions 223 of each of the elastic piece groups 100a, the front abutting portion 223 is inclined toward the middle abutting portion 223 so that the rear side surface of the front abutting portion 223 abuts against the front side surface of the middle abutting portion 223, and the middle abutting portion 223 is inclined toward the rear abutting portion 223 so that the rear side surface of the middle abutting portion 223 abuts against the front side surface of the rear abutting portion 223, and the distance of the inclination in the front-rear direction is longer than the gap between the front and rear adjacent main body portions 221. The rest of the structure and function are completely the same as those of the first embodiment, and are not described herein again.

Fig. 8 to 10 show a third embodiment of the present invention, which is different from the first embodiment in that the abutting portions 223 are not obliquely disposed, and in two abutting portions 223 adjacent to each other in the front and rear of each of the plate groups 100a, a convex hull 2231 protrudes rearward from the abutting portion 223 in the front to abut against the front side surface of the abutting portion 223 in the rear (that is, in three abutting portions 223 of each of the plate groups 100a, one convex hull 2231 protrudes rearward from each of the two abutting portions 223 in the front), the convex hull 2231 protrudes to a thickness greater than a gap between the two main body portions 221 adjacent to each other in the front and rear, the two convex hulls 2231 adjacent to each other in the front and rear are disposed above each other, and the two convex hulls 2231 adjacent to each other in the front and rear are at least partially overlapped (see fig. 9); the convex hull 2231 is proximate to the docking area 224 with a separation between the convex hull 2231 and the docking area 224, the distance between the convex hull 2231 and the docking area 224 being less than the distance between the convex hull 2231 and the retainer portion 21. The rest of the structure and function are completely the same as those of the first embodiment, and are not described herein again.

Fig. 11 and 12 show a fourth embodiment of the present invention, which is different from the first embodiment in that the abutting portions 223 of each group of the spring plate groups 100a are not obliquely disposed and abut against each other before being connected to the abutting element 200, the abutting element 200 is respectively provided with an inclined surface 200b corresponding to the front and the rear of each group of the spring plates 100a, and the inclined surfaces 200b abut against the elastic arms 22, so that the elastic arms 22 are inclined toward the adjacent elastic arms 22 to abut against the adjacent abutting portions 223 of each group of the spring plates 100 a. Specifically, in the process of assembling the abutting element downward, the elastic arms 22 located at the front side and the rear side in the three elastic arms 22 of each elastic sheet set 100a are respectively pushed by the inclined surface 200b, so that the elastic arms 22 located at the front side and the rear side are respectively inclined toward the middle elastic arm 22 to abut against the middle elastic arm 22, of course, the inclined surface 200b may be only located in front of the elastic sheet set 100a, that is, the inclined surface 200b is not located behind the elastic sheet set 100a, at this time, the elastic arm 22 located at the front side is inclined toward the middle elastic arm 22 to abut against the middle elastic arm 22, and the elastic arm 22 located at the middle is also inclined rearward to abut against the elastic arm 22 located at the rear side, so that the 3 abutting portions 223 located at the front side, the middle side and the rear side abut against each other; in addition, the docking element 200 may be only located behind each elastic sheet set 100a, and the inclination direction of the elastic arm 22 is opposite, which is not described again.

The power terminal 100 and the electric connector of the invention have the following beneficial effects:

1. in each elastic sheet set 100a, the front and rear adjacent elastic arms 22 are abutted together by the acting force between the abutting portions 223, so that the impedance between the elastic arms 22 is ensured to be the same, the passing currents are the same, and the situation that the elastic arms 22 are fused due to overlarge passing currents caused by random overlapping is avoided.

2. Since the abutting portions 223 are inclined toward the adjacent abutting portions 223 in the front-rear direction by a distance greater than the gap between the two adjacent main body portions 221, the urging force between the abutting portions 223 is greater, and the contact between the abutting portions 223 is more stable.

3. Since the convex hull 2231 protrudes to a thickness greater than the gap between two adjacent front and back main body portions 221, the acting force between the abutting portions 223 is greater, and the contact between the abutting portions 223 is more stable; because the two convex hulls 2231 adjacent to each other in the front and back of each elastic sheet group 100a are arranged up and down, and the two convex hulls 2231 adjacent to each other in the front and back are at least partially overlapped in the projection in the front and back direction, the distance between the two convex hulls adjacent to each other in the front and back direction is closer, and the acting force between the abutting portions 223 is further increased.

4. Because each of the spring plate groups 100a is provided with a plurality of butt-joint areas 224 in a rectangular array, the butt-joint area 224 of each of the spring plate groups 100a is abutted to the same contact part 200a, so that the contact points of the power terminal 100 and the contact part 200a are increased, the temperature rise and the heat generation of the power terminal 100 are reduced, and larger current can be supplied.

5. Since the elastic arm 22 is substantially in the shape of a vertical flat plate, the main body 221 includes a vertical section 2211 and a first inclined section 2212 inclined upward and rightward from the vertical section 2211, and a second inclined section 2213 is formed by inclining upward and rightward from the first inclined section 2212, so that the forming process of the elastic sheet 2 is simple, and the elastic arm 22 has elasticity.

6. Since the fixing portion 21 is deformed by heat generated during welding, the projection 211 is welded to the front side surface of the fixing portion 21 located behind the fixing portion, so that the heat generated during welding is limited to the range of the projection 211, and the deformation of the fixing portion 21 is reduced.

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 the drawings are included in the scope of the present invention.

Claims

1. A power terminal for electrically connecting a contact portion of a mating component, comprising: the method comprises the following steps:

a metal plate;

two shell fragment groups are fixed in respectively the leading flank and the trailing flank of metal sheet, each shell fragment group is including a plurality of shell fragments that parallel from beginning to end, each the shell fragment has a fixed part, each the fixed part of shell fragment group is along front and back reciprocal fixed, from each the fixed part upwards extends a plurality of elastic arms and arranges into one row along left right direction, the elastic arm has a main part certainly the fixed part upwards extends, each around in the shell fragment group adjacent two have the clearance between the main part, certainly the main part upwards extends and forms a butt portion, each the butt portion is through butt joint around the effort between each other around the adjacent two butt portions of shell fragment group, the top surface of elastic arm has a butt joint district, each a plurality of butt joint districts of shell fragment group are rectangular array, the butt joint district of two shell fragment groups upwards butt in the contact portion.

2. The power terminal of claim 1, wherein in two adjacent abutting portions of each spring plate set, a convex hull protrudes backward from the abutting portion in front to abut against a front side of the abutting portion in back, the convex hull protrudes to a thickness greater than a gap between the two adjacent main body portions in front and back, a distance between the convex hull and the abutting region is smaller than a distance between the convex hull and the fixing portion, and a space is provided between the convex hull and the abutting region.

3. The power terminal of claim 2, wherein each spring plate set comprises three spring plates, the protruding protrusions protrude backward from the front two spring plates, the two protruding protrusions adjacent to each other in front and back of each spring plate set are disposed up and down, and the two protruding protrusions adjacent to each other in front and back are at least partially overlapped in projection along the front and back directions.

4. The power terminal of claim 1, wherein the abutment portion is connected to a top surface of the resilient arm.

5. The power terminal as claimed in claim 1, wherein in the two adjacent front and rear abutting portions of each spring plate group, the abutting portions are inclined toward the adjacent abutting portions in the front and rear direction by a distance greater than a gap between the two adjacent front and rear main body portions.

6. The power terminal as claimed in claim 1, wherein, of the two adjacent front and rear abutting portions of each spring plate group, the front abutting portion is inclined toward the rear abutting portion such that a rear side surface of the front abutting portion abuts against a front side surface of the rear abutting portion, and the distance of inclination in the front-rear direction is greater than a gap between the two adjacent front and rear main body portions.

7. The power terminal of claim 1, wherein each spring set comprises three springs, and the abutting portion of the spring at the front and rear sides of each spring set is inclined toward the abutting portion of the spring at the middle, and the inclined distance is greater than the gap between the front and rear adjacent main body portions.

8. The power terminal of claim 1, wherein the abutting element is provided with a slope surface located in front of or behind the spring plate set, the slope surface pushes against the elastic arm, so that the elastic arm is inclined towards the adjacent elastic arm, and the adjacent front and back abutting parts of each spring plate set abut.

9. The power terminal of claim 1, wherein the main body portion includes a vertical section and a first inclined section inclined upward and rightward from the vertical section, a second inclined section inclined upward and rightward from the first inclined section, an angle of the second inclined section inclined rightward is smaller than an angle of the first inclined section inclined rightward and a length of the second inclined section is smaller than a length of the first inclined section, and the abutting portion is connected to the second inclined section.

10. The power terminal as claimed in claim 1, wherein in the fixing portion of each group of the elastic sheet sets, a protruding portion is protruded backward from the front fixing portion and welded to the front side surface of the rear fixing portion.

11. The power terminal of claim 1, wherein the upper end of the metal plate is higher than the upper end of the fixing portion, the metal plate is provided with a plurality of pins for being plugged into a circuit board, and the lower end of the spring plate is higher than the upper ends of the pins.

12. An electrical connector for electrically connecting a mating component having a plurality of contacts, comprising: comprises a plurality of power terminals according to any one of claims 1-11, a plurality of power terminals contacting with the plurality of contact portions in a one-to-one correspondence, and an insulating body having a plurality of receiving holes penetrating up and down, each power terminal being received in a corresponding one of the receiving holes.