CN217215133U

CN217215133U - Metal reed structure and electric connector

Info

Publication number: CN217215133U
Application number: CN202123006512.3U
Authority: CN
Inventors: 王超; 左振方
Original assignee: Changchun Jetty Automotive Parts Co Ltd
Current assignee: Changchun Jetty Automotive Parts Co Ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-08-16
Anticipated expiration: 2031-12-02

Abstract

The utility model provides a metal reed structure and electric connector, include: the first side plate and the third side plate are in the same plane, and the second side plate and the fourth side plate are in the same plane; the connecting structure further comprises at least one pair of first connecting reed and second connecting reed which are arranged like each other, wherein two ends of the first connecting reed are respectively connected with the first side plate and the third side plate, and two ends of the second connecting reed are respectively connected with the second side plate and the fourth side plate. Through the utility model discloses, not only can realize public end terminal and female end terminal at 90 and 180 plug installations of orientation, public end terminal and female end terminal can be through this metal reed structure moreover, need not be through other switching mechanism, just can directly realize electric connection, and the cost is practiced thrift in the assembly of being convenient for.

Description

Metal reed structure and electric connector

Technical Field

The utility model relates to an electricity connection technical field especially relates to a metal reed structure and electric connector.

Background

In the practical application of high voltage connector, public end terminal and female end terminal are connected and are the common combination among the electric connector, and current public end terminal is mostly machine tooling shaping with female end terminal, and not only the cost is higher, production efficiency is low but also the current-carrying capacity is limited. At present, the plugging direction of a male terminal is limited, and for the plugging requirements of the male terminal in the 90-degree and 180-degree directions, two different female terminals are required to meet the using requirements of the terminals plugged in different directions, so that a terminal which is convenient to process, light in weight, low in cost and better in current-carrying capacity is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a metal reed structure not only can realize public end terminal and female end terminal at 90 and 180 plug installations of orientation, and public end terminal and female end terminal can be through this metal reed structure moreover, need not be through other switching mechanism, just can directly realize electric connection, and the cost is practiced thrift in the assembly of being convenient for.

The above object of the present invention can be achieved by the following technical solutions: a metal reed structure, comprising: the first side plate and the third side plate are in the same plane, and the second side plate and the fourth side plate are in the same plane; the connecting device also comprises at least one pair of first connecting reeds and second connecting reeds which are oppositely arranged, wherein two ends of each first connecting reed are respectively connected with the first side plate and the third side plate, and two ends of each second connecting reed are respectively connected with the second side plate and the fourth side plate; the spring plate comprises a first side plate and a second side plate, and is characterized by further comprising at least one pair of first cantilever spring pieces and second cantilever spring pieces which are arranged in a relative mirror mode, one end of each first cantilever spring piece is connected with the first side plate, the other end of each first cantilever spring piece forms a free end, one end of each second cantilever spring piece is connected with the second side plate, and the other end of each second cantilever spring piece forms a free end.

In a preferred embodiment, the first connection spring and the second connection spring are arranged in a mirror image relative to each other.

In a preferred embodiment, the first cantilever spring and the second cantilever spring are arranged in opposing mirror images.

In a preferred embodiment, a longitudinal section of the first connection spring and a longitudinal section of the second connection spring are corrugated, and a longitudinal section of the first cantilever spring and a longitudinal section of the second cantilever spring are corrugated.

In a preferred embodiment, at least at the wave crest or the wave trough of the first connection reed and/or the second connection reed, a first lug boss protruding towards the outside of the wave crest or the wave trough is arranged; and at least at the wave crest or the wave trough of the first cantilever spring and/or the second cantilever spring, a second boss protruding towards the outer side of the wave crest or the wave trough is arranged.

In a preferred embodiment, the minimum vertical distance between the wave crest and the wave trough of the first connection spring or the second connection spring is 1 to 12 times the thickness of the first connection spring or the second connection spring.

In a preferred embodiment, the minimum vertical distance between the peak and trough of the first cantilever spring or the second cantilever spring is 1 to 12 times the thickness of the first cantilever spring or the second cantilever spring.

In a preferred embodiment, a distance between adjacent peaks of the first connection spring or the second connection spring is 3 times to 32 times a thickness of the first connection spring or the second connection spring.

In a preferred embodiment, the distance between adjacent peaks of the first cantilever spring or the second cantilever spring is 3 to 32 times the thickness of the first cantilever spring or the second cantilever spring.

In a preferred embodiment, a terminal insertion slot is formed between the first side plate, the third side plate, the first connection spring and the first cantilever spring, and the second side plate, the fourth side plate, the second connection spring and the second cantilever spring.

In a preferred embodiment, the connector comprises a plurality of first connection reeds and a plurality of first cantilever reeds, and the plurality of first connection reeds and the plurality of first cantilever reeds are arranged at intervals; the connecting device comprises a plurality of second connecting reeds and a plurality of second cantilever reeds, wherein the plurality of second connecting reeds and the plurality of second cantilever reeds are arranged at intervals.

In a preferred embodiment, the spacing distance between adjacent first connection springs and first cantilever spring is 1% -100% of the width of the first cantilever spring; and the spacing distance between the adjacent second connecting reeds and the second cantilever reeds is 1-100% of the width of the second cantilever reeds.

In a preferred embodiment, at least one side hanging lug with a U-shaped cross section is connected to the first side plate, the second side plate, the third side plate and the fourth side plate in the extending direction.

In a preferred embodiment, the first side plate and the second side plate are connected with at least one top hanging lug with a U-shaped section in the side direction.

In a preferred embodiment, the third side panel and the fourth side panel are connected in a lateral direction by at least one plate-like connecting bridge.

In a preferred embodiment, the material of the metal reed structure comprises one or more of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, beryllium, and lead.

In a preferred embodiment, at least part of the surface of said metal strip is provided with a coating.

In a preferred embodiment, the coating material contains one or more of gold, silver, nickel, tin, zinc, tin-lead alloy, silver-antimony alloy, palladium-nickel alloy, graphite silver, graphene silver, hard silver and silver-gold-zirconium alloy.

An electrical connector includes a female terminal having a U-shaped structure, a sheet-like male terminal, and a metal spring structure, the female terminal having a top opening and side openings on both sides, the top lug of the metal spring structure being arranged to connect with the top opening or one of the side openings.

In a preferred embodiment, the side hangers of the metal spring structure are configured to be connected to the top opening, or to one of the side openings, or to both side openings, respectively.

In a preferred embodiment, the first connection reed, the second connection reed, the first cantilever reed and the second cantilever reed are disposed in the female terminal, an inner portion of a peak of the first connection reed, the second connection reed, the first cantilever reed and the second cantilever reed is in contact with the mating surface of the male terminal, and an outer portion of the peak is in contact with an inner surface of the female terminal.

In a preferred embodiment, the elastic force exerted on the male terminal by the first connection spring or the second connection spring is 0.3N to 98N.

In a preferred embodiment, the elastic force exerted on the male terminal by the first connection spring or the second connection spring is 0.3N to 55N.

In a preferred embodiment, the spring force exerted by the first cantilever spring or the second cantilever spring on the male terminal is in the range of 0.3N-98N.

In a preferred embodiment, the spring force exerted by the first or second cantilever spring on the male terminal is in the range of 0.3N-55N.

In a preferred embodiment, the metal spring structure is formed by integrally stamping a plate-shaped material.

The utility model discloses a characteristics and advantage are:

1. through this metal reed structure, not only can realize female terminal and the cooperation installation of metal reed structure in 90 and 180 orientations, can realize public terminal simultaneously in the plug connection of 90 and 180 orientations, public terminal and female terminal can be through this metal reed structure moreover, need not pass through other changeover mechanism, just can directly realize the electricity and connect, and the cost is practiced thrift in the assembly of being convenient for.

2. This design of metal reed structure, in the aspect of the electrical contact, owing to select for use corrugated connection reed and cantilever reed, corrugated elastic deformation's effect, when electric connector uses in-process vibrations, female terminal or public end terminal probably produce the displacement, and the design of this metal reed structure can guarantee to connect reed and cantilever reed and public end terminal or with female end terminal remain the contact all the time to guarantee contact resistance stability, current-carrying capacity is better.

3. This design of metal reed structure, in the aspect of mechanical properties, the structural style adopts connection reed and cantilever reed, all is equipped with the clearance between a plurality of connection reeds and a plurality of cantilever reeds simultaneously, both can disperse the power of public end terminal in inserting the metal reed structure, can effectively reduce the temperature rise value of contact and the resistance value of contact again.

4. This metal reed structure sets up top hangers and side hangers, at the connected process of metal reed and female end terminal, can realize better and female end terminal in 90 or at the cooperation of 180 orientation be connected.

5. This metal reed structure sets up the connection bridge, inserts the in-process at public end terminal, can play certain limiting displacement to inserting of terminal.

6. The metal reed adopts an integrated punch forming structure, so that the processing efficiency is effectively improved and the cost is reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of the metal spring of the present invention;

FIG. 2 is a left side view of the metal spring structure of the present invention;

FIG. 3 is a front view of the metal spring plate structure of the present invention;

fig. 4 is a schematic diagram of the 180 ° male terminal insertion of the metal spring of the present invention;

fig. 5 is a schematic view of the insertion of the 90 ° male terminal of the metal spring of the present invention;

FIG. 6 is a schematic structural view of another embodiment of the metal reed of the present invention;

FIG. 7 is a left side view of another embodiment of the metal reed of the present invention;

fig. 8 is a schematic view of the installation of the metal reed and the female terminal at 180 ° in the present invention;

fig. 9 is a schematic view of the installation of the metal reed and the female terminal at 90 ° in the present invention;

fig. 10 is a schematic view of the 180 ° male terminal insertion of the electrical connector of the present invention;

fig. 11 is a schematic view of the 90 ° male terminal of the electrical connector of the present invention;

fig. 12 is a schematic structural view of another embodiment of the metal reed structure of the present invention;

fig. 13 is a schematic view of an embodiment of an electrical connector according to the present invention;

fig. 14 is a schematic view of another embodiment of the electrical connector of the present invention.

The reference numbers illustrate:

1. a first side plate; 2. a second side plate; 3. a third side plate; 4. a fourth side plate;

5. a first connection reed; 6. a second connection reed; 7. a first cantilever spring; 8. a second cantilever spring;

9. a first boss; 10. a second boss; 11. a terminal insertion slot; 12. side hangers; 13. a top suspension loop;

14. a connecting bridge; 15. a female terminal; 16. a male terminal;

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In one embodiment, as shown in fig. 1 and 2, a metal spring structure comprises: the pair of the side plates comprises a first side plate 1 and a second side plate 2 which are oppositely arranged, and a third side plate 3 and a fourth side plate 4 which are oppositely arranged, wherein the first side plate 1 and the third side plate 3 are in the same plane, and the second side plate 2 and the fourth side plate 4 are in the same plane; the connecting structure further comprises at least one pair of a first connecting reed 5 and a second connecting reed 6 which are arranged mutually, two ends of the first connecting reed 5 are respectively connected with the first side plate 1 and the third side plate 3, and two ends of the second connecting reed 6 are respectively connected with the second side plate 2 and the fourth side plate 4; the spring support is characterized by further comprising at least one pair of first cantilever spring 7 and second cantilever spring 8 which are arranged oppositely, one end of the first cantilever spring 7 is connected with the first side plate 1, the other end of the first cantilever spring forms a free end, one end of the second cantilever spring 8 is connected with the second side plate 2, and the other end of the second cantilever spring forms a free end.

The first connection reed 5 and the second connection reed 6 may be disposed at a certain included angle, the included angle is 0 ° to 50 °, when the surface of the female terminal 15 or the male terminal 16 is not a plane parallel to each other, the first connection reed 5 or the second connection reed 6 may be disposed at a certain angle, so that the first connection reed 5 and the second connection reed 6 have better electrical connectivity with the female terminal 15 or the male terminal 16, and the specific included angle may be set to 5 °, 10 °, 20 °, and the like.

Similarly, the included angle between the first cantilever spring 7 and the second cantilever spring 8 is 0-50 degrees, specifically 5 degrees, 10 degrees, 20 degrees and the like.

The utility model discloses a first cantilever reed 7 and second cantilever reed 8 are different from common longitudinal symmetry structure, adopt and insert the structure that the direction is the same with public end terminal 16, because in practical application, if public end terminal 16 non-vertical insert or plug number of times is too much, do not cause the phenomenon that first cantilever reed 7 and second cantilever reed 8 bend or roll over easily in same direction with public end terminal 16.

As shown in fig. 4, the first side plate 1 and the second side plate 2 of the metal reed structure are respectively connected to one inner side surface of the female terminal 15, the third side plate 3 and the fourth side plate 4 are respectively connected to the other inner side surface of the female terminal 15, and the above connection modes may be one or more of welding connection, screw connection, clamping connection, splicing connection and crimping connection.

One embodiment can be for female terminal 15 and the laminating department of first curb plate 1 and second curb plate 2 set up the arch, first curb plate 1 and second curb plate 2 correspond the position be provided with the hole site that the arch corresponds the hole site with protruding spacing connection back carries out first curb plate 1 and second curb plate 2 and female terminal 15's welded connection again.

According to the welding mode of the hole sites of the metal reed structures, the third side plate 3 and the fourth side plate 4 can be free of welding for the movable ends, when the male terminal 16 is inserted, the metal reed structures have elastic extension, and the structure yield of the connection reeds and the cantilever reeds due to overlarge insertion force of the male terminal 16 cannot occur.

In the above embodiment, all of the first side plate 1, the second side plate 2, the third side plate 3, and the fourth side plate 4 may be welded to the female terminal 15.

Through the setting of this metal reed, female terminal 15 not only can carry out 90 with this metal reed structure and 180 installation, and also can realize public terminal 16 at 90 and 180 plug connections of orientation, public terminal 16 and female terminal 15 can be through this metal reed structure simultaneously, need not pass through other changeover mechanism, just can directly realize the electricity and connect, the assembly of being convenient for, and the cost is saved, changeover mechanism generally indicates that female terminal 15 and public terminal 16 need pass through the adaptor under normal conditions, realize the electricity between female terminal 15 and the public terminal 16 and be connected through modes such as spiro union or welding.

In one embodiment, the first connection spring 5 and the second connection spring 6 are arranged in a mirror image relative to each other. The male terminal 16 is integrally formed, the contact surfaces of the male terminal 16 and the first connecting spring 5 and the contact surfaces of the male terminal 16 and the second connecting spring 6 are generally parallel, and the mirror image arrangement can ensure that the contact surfaces are the largest and the electrical contact is better.

As above, in another embodiment, first cantilever spring 7 and second cantilever spring 8 are also mirror images.

In one embodiment, the longitudinal cross section of the first connection reed 5 and the second connection reed 6 is corrugated, and the longitudinal cross section of the first cantilever reed 7 and the second cantilever reed 8 is corrugated along the extending direction of the first connection reed 5 and the second connection reed 6, as shown in fig. 2, the vertical direction in the drawing is the extending direction of the first connection reed 5 and the second connection reed 6, and is also the extending direction of the first cantilever reed 7 and the second cantilever reed 8. This design of metal reed structure chooses the ripple column structure for use, ripple form elastic deformation's effect, can shake in the electric connector use, female end terminal 15 or public end terminal 16 probably produce the displacement, the design of this structure can guarantee first connection reed 5, second connection reed 6 and first cantilever reed 7, second cantilever reed 8 and public end terminal 16 or with female end terminal 15 remain the contact all the time, thereby guarantee that contact resistance is stable, current-carrying capacity is better.

In one embodiment, as shown in fig. 2 and 3, at least at the peak or the valley of the first connection spring 5 and/or the second connection spring 6, a first projection 9 is provided, which is convex toward the outside of the peak or the valley; at least at the wave crest or the wave trough of the first cantilever spring 5 and/or the second cantilever spring 6, a second boss 10 is provided, which is convex towards the outside of the wave crest or the wave trough. In order to improve the conductivity, the inventor arranges the first bosses 9 at the wave crests or the wave troughs of the first connecting reed 5 and the second connecting reed 6, or at the wave crests or the wave troughs of the first connecting reed 5 or the second connecting reed 6, and specifically, the first bosses 9 can be arranged at the corresponding wave crests or wave troughs according to the actual use condition. The arrangement of the first boss 9 can make the metal reed structure better contact with the male terminal 16 and the female terminal 15, and the connection mode of the first boss can be integrally punch-formed with the first connection reed 5 and the second connection reed 6, or can be formed by milling. The second boss 10 is arranged and effected as the first boss 9.

In one embodiment, the minimum vertical distance between the wave crest and the wave trough of the first connection spring 5 or the second connection spring 6 is 1 to 12 times the thickness of the first connection spring 5 or the second connection spring 6. As shown in fig. 12, the distance H1 is the minimum vertical distance between the peak and the valley of the first connection spring 5 or the second connection spring 6, the larger the value H1 is, the larger the amplitude of the corrugation is, and the smaller the value H1 is, the closer the corrugation is to flat.

In order to verify the minimum vertical distance H1 between the peak and the trough of the first connection reed 5 or the second connection reed 6 and the multiple of the thickness of the first connection reed 5 or the second connection reed 6, the influence on the contact resistance between the first connection reed 5 or the second connection reed 6 and the male terminal 16, and the influence on the overall thickness of the electrical connector, the inventor selects the same thickness of the first connection reed 5 or the second connection reed 6, the same linear length of the first connection reed 5 or the second connection reed 6, the same male terminal 16, the minimum vertical distance H1 between different peaks and troughs, and the female terminal 15 corresponding to different thicknesses, manufactures a series of electrical connector samples, tests the contact resistance and the overall thickness of the electrical connector samples, and records the test values in table 1.

The test method of the contact resistance of the electric connector sample piece comprises the following steps: the micro resistance tester is used to connect the male terminal 16 and the first connection reed 5 or the second connection reed 6, respectively, and the resistance value between them is measured, and in this embodiment, the contact resistance value is less than 9m omega, which is a qualified value.

The method for testing the overall thickness of the electric connector sample piece comprises the following steps: the thickness of the outside of the female terminal 15 is measured by a vernier caliper, and in this embodiment, the thickness of the outside of the female terminal 15 is less than 10mm, which is a qualified value.

Table 1: the influence of the minimum vertical distance between the wave crest and the wave trough of the first connecting reed 5 or the second connecting reed 6 and the multiple of the thickness of the first connecting reed 5 or the second connecting reed 6 on the contact resistance of the first connecting reed 5 or the second connecting reed 6 and the overall thickness of the electric connector

As can be seen from table 1 above, when the minimum vertical distance between the wave crest and the wave trough of the first connection reed 5 or the second connection reed 6 and the multiple of the thickness of the first connection reed 5 or the second connection reed 6 are less than 1 time, since the deformation amount of the first connection reed 5 or the second connection reed 6 is small, the force applied to the male terminal 16 will be small, and the contact area between the first connection reed 5 or the second connection reed 6 and the male terminal 16 is small, so that the contact resistance between the first connection reed 5 or the second connection reed 6 and the male terminal 16 is greater than 9m Ω, and the result is unqualified; when the minimum vertical distance between the wave crest and the wave trough of the first connection reed 5 or the second connection reed 6 and the multiple of the thickness of the first connection reed 5 or the second connection reed 6 are greater than 12 times, the deformation of the first connection reed 5 or the second connection reed 6 is large, so that the contact resistance is smaller than 9m omega, the requirement value is met, but the descending trend of the contact resistance becomes slow, and in order to obtain a larger vertical distance between the wave crest and the wave trough, under the condition that the thickness of the male terminal 16 is not changed, the thickness of the female terminal 15 can only be increased, so that the gap between the female terminal 15 and the male terminal 16 is increased, but the thickness of the female terminal 15 exceeds the requirement value, and the female terminal is in a non-qualified state, and at the moment, the electric connector cannot be plugged into a corresponding plugging sheath, and cannot realize functions. Therefore, the inventor selects the minimum vertical distance H1 between the peak and the valley of the first connection spring 5 or the second connection spring 6 to be 1 to 12 times the thickness of the first connection spring 5 or the second connection spring 6.

In one embodiment, the minimum vertical distance between the peak and trough of the first cantilever spring 5 or the second cantilever spring 6 is 1 to 12 times the thickness of the first cantilever spring 5 or the second cantilever spring 6. As shown in FIG. 12, the distance H2, which is the minimum vertical distance between the peak and the trough of the first cantilever spring 5 or the second cantilever spring 6, is such that the greater the value H2, the greater the amplitude of the corrugation, and the smaller the value H2, the closer the corrugation is to being flat.

In order to verify the minimum vertical distance between the peak and the trough of the first cantilever spring 5 or the second cantilever spring 6 and the multiple of the thickness of the first cantilever spring 5 or the second cantilever spring 6, the influence on the contact resistance between the first cantilever spring 5 or the second cantilever spring 6 and the male terminal 16, and the influence on the overall thickness of the electrical connector, the inventor selects the same thickness of the first cantilever spring 5 or the second cantilever spring 6, the same straight length of the first cantilever spring 5 or the second cantilever spring 6, the same male terminal 16, the minimum vertical distance between different peaks and troughs, and the female terminal 15 corresponding to different thicknesses, manufactures a series of electrical connector samples, tests the contact resistance and the overall thickness of the electrical connector samples, and records the test values in table 2.

The test method of the contact resistance of the electric connector sample piece comprises the following steps: and (3) respectively connecting the male terminal 16 and the first cantilever spring 5 or the second cantilever spring 6 by using a micro-resistance tester, and measuring the resistance value between the two, wherein in the embodiment, the contact resistance value is less than 9m omega, which is a qualified value.

Table 2: the minimum vertical distance between the wave crest and the wave trough of the first cantilever spring or the second cantilever spring and the multiple of the thickness of the first cantilever spring or the second cantilever spring affect the contact resistance of the first cantilever spring or the second cantilever spring and the integral thickness of the electric connector

As can be seen from the above table 2, when the minimum vertical distance between the peak and the trough of the first cantilever spring 5 or the second cantilever spring 6 and the multiple of the thickness of the first cantilever spring 5 or the second cantilever spring 6 are less than 1 time, since the deformation amount of the first cantilever spring 5 or the second cantilever spring 6 is small, the force applied to the male terminal 16 will be small, and the contact area between the first cantilever spring 5 or the second cantilever spring 6 and the male terminal 16 is small, so that the contact resistance between the first cantilever spring 5 or the second cantilever spring 6 and the male terminal 16 is greater than 9m Ω, which is not qualified; when the minimum vertical distance between the wave crest and the wave trough of the first cantilever reed 5 or the second cantilever reed 6 and the multiple of 6 degrees of the thickness of the first cantilever reed 5 or the second cantilever reed are greater than 12 times, the deformation of the first cantilever reed 5 or the second cantilever reed 6 is large, so that the contact resistance is smaller than 9m omega, the required value is met, but the descending trend of the contact resistance becomes slow, and in order to obtain the larger vertical distance between the wave crest and the wave trough, under the condition that the thickness of the male terminal 16 is not changed, the thickness of the female terminal 15 can only be increased, so that the gap between the female terminal 15 and the male terminal 16 is increased, but the thickness of the female terminal 15 exceeds the required value, the female terminal is in an unqualified state, and at the moment, the electric connector cannot be plugged into a corresponding plugging sheath, and cannot realize functions. Therefore, the inventor chooses the minimum vertical distance between the peak and the trough of the first cantilever spring 5 or the second cantilever spring 6 to be 1 to 12 times the thickness of the first cantilever spring 5 or the second cantilever spring 6.

In one embodiment, the distance between adjacent peaks of the first connecting spring 5 or the second connecting spring 6 is 3 to 32 times the thickness of the first connecting spring 5 or the second connecting spring 6. As shown in fig. 12, the distance of L1, which is the distance between adjacent peaks of the first connecting spring 5 or the second connecting spring 6, is larger in the value of L1, the less the corrugations in the same length, and smaller in the value of L1, the denser the corrugations in the same length.

In order to verify the multiple of the distance between adjacent wave crests of the first connection reed 5 or the second connection reed 6 and the thickness of the first connection reed or the second connection reed, the influence on the contact resistance between the first connection reed 5 or the second connection reed 6 and the male terminal 16, and the influence on the deformation amount of the first connection reed 5 or the second connection reed 6, the inventor selects the same thickness of the first connection reed 5 or the second connection reed 6, the same linear length of the first connection reed 5 or the second connection reed 6, the same male terminal 16 and the female terminal 15, and the distance between different adjacent wave crests, manufactures a series of electric connector samples, tests the contact resistance of the electric connector samples and the deformation amount of the first connection reed 5 or the second connection reed 6, and records the test values in table 3.

The test method of the contact resistance of the electric connector sample piece comprises the following steps: the micro resistance tester is used to connect the male terminal 16 and the first connection reed 5 or the second connection reed 6 respectively, and the resistance value between the two is measured, and in this embodiment, the contact resistance value is less than 9m omega, which is a qualified value.

The method for testing the deformation of the first connecting reed 5 or the second connecting reed 6 comprises the following steps: and (3) applying thrust to the wave crest of the first connecting reed 5 or the second connecting reed 6 by using a push-pull force meter to enable the reaction force to reach 30N, and recording the distance moved by the wave crest of the first connecting reed 5 or the second connecting reed 6 at the moment, wherein in the embodiment, the distance moved by the wave crest is less than 0.5mm, which is an unqualified value.

Table 3: the distance between adjacent wave crests of the first connection reed or the second connection reed and the multiple of the thickness of the first connection reed or the second connection reed, the contact resistance between the first connection reed or the second connection reed and the male terminal, and the influence on the deformation of the first connection reed or the second connection reed

As can be seen from the above table 3, when the distance between adjacent wave crests of the first connection reed 5 or the second connection reed 6 and the multiple of the thickness of the first connection reed 5 or the second connection reed 6 are less than 3 times, the number of the wave crests and the wave troughs increases under the same length, and the contact area between the first connection reed 5 or the second connection reed 6 and the male terminal 16 increases, so that the contact resistance between the first connection reed 5 or the second connection reed 6 and the male terminal 16 is smaller than 9m Ω, which meets the requirement value, but because the distance between two side edges of the wave crests or the wave troughs is close, when pressure is applied, the deformation amount of the first connection reed 5 or the second connection reed 6 is small, the distance of the movement of the wave crests is smaller than 0.5mm, which does not meet the requirement value, so that the insertion force and the extraction force of the male terminal 16 increase, which is inconvenient for the user; when the distance between the adjacent peaks of the first connecting spring 5 or the second connecting spring 6 is more than 32 times the thickness of the first connecting spring 5 or the second connecting spring 6, at the same length, the number of peaks and valleys decreases, the contact area with the male terminal 16 decreases, and thus, the contact resistance between the first connection spring 5 or the second connection spring 6 and the male terminal 16 becomes larger than 9m omega, which does not meet the required value, because the distance between two side edges of the wave crest or the wave trough is far, when the wave crest or the wave trough is pressed, the deformation of the first connecting reed 5 or the second connecting reed 6 is large, the moving distance of the wave crest is more than 0.5mm, the required value is met, therefore, the distance between adjacent peaks of the first connection spring 5 or the second connection spring 6 is selected by the inventor to be 3 times to 32 times the thickness of the first connection spring 5 or the second connection spring 6.

In one embodiment, the distance between adjacent peaks of the first cantilever spring 7 or the second cantilever spring 8 is 3 to 32 times the thickness of the first cantilever spring 7 or the second cantilever spring 8. As shown in fig. 12, the distance of L2, which is the distance between adjacent peaks of the first cantilever spring 7 or the second cantilever spring 8, is larger in the value of L2, the less the ripples in the same length, and smaller in the value of L2, the more the ripples in the same length are dense.

In order to verify the multiple of the distance between adjacent wave crests of the first cantilever reed 7 or the second cantilever reed 8 and the thickness of the first cantilever reed 7 or the second cantilever reed 8, the influence on the contact resistance between the first cantilever reed 7 or the second cantilever reed 8 and the male terminal 16, and the influence on the deformation amount of the first cantilever reed 7 or the second cantilever reed 8, the inventor selects the same thickness of the first cantilever reed 7 or the second cantilever reed 8, the same linear length of the first cantilever reed 7 or the second cantilever reed 8, the same male terminal 16 and the female terminal 15, and the distance between different adjacent wave crests, manufactures a series of electric connector samples, tests the contact resistance of the electric connector samples and the deformation amount of the first cantilever reed 7 or the second cantilever reed 8, and records the test values in a table 4.

The test method of the contact resistance of the electric connector sample piece comprises the following steps: and (3) respectively connecting the male terminal 16 and the first cantilever spring 7 or the second cantilever spring 8 by using a micro-resistance tester, and measuring the resistance value between the two, wherein in the embodiment, the contact resistance value is less than 9m omega, which is a qualified value.

The method for testing the deformation of the first cantilever spring 7 or the second cantilever spring 8 comprises the following steps: and (3) applying thrust to the wave crest of the first cantilever reed 7 or the second cantilever reed 8 by using a push-pull force meter to enable the reaction force to reach 30N, and recording the distance moved by the wave crest of the first cantilever reed 7 or the second cantilever reed 8 at the moment, wherein in the embodiment, the distance moved by the wave crest is less than 0.5mm, which is an unqualified value.

Table 4: the distance between adjacent wave crests of the first cantilever spring or the second cantilever spring and the multiple of the thickness of the first cantilever spring or the second cantilever spring, the contact resistance between the first cantilever spring or the second cantilever spring and the male terminal, and the influence on the deformation of the first cantilever spring or the second cantilever spring

As can be seen from the above table 4, when the distance between adjacent peaks of the first cantilever spring 7 or the second cantilever spring 8 and the multiple of the thickness of the first connection spring 7 or the second connection spring 8 is less than 3 times, the number of peaks and troughs increases under the same length, and the contact area between the first cantilever spring 7 or the second cantilever spring 8 and the male terminal 16 increases, so that the contact resistance between the first cantilever spring 7 or the second cantilever spring 8 and the male terminal 16 is smaller than 9m Ω, which meets the requirement value, but because the distance between two side edges of the peaks or the troughs is close, when pressure is applied, the deformation amount of the first cantilever spring 7 or the second cantilever spring 8 is small, the distance of peak movement is smaller than 0.5mm, which does not meet the requirement value, so that the insertion force and the extraction force of the male terminal 16 increase, which is inconvenient for the user; when the distance between adjacent peaks of the first cantilever spring 7 or the second cantilever spring 8 is greater than 32 times the thickness of the first cantilever spring 7 or the second cantilever spring 8, at the same length, the number of peaks and valleys decreases, the contact area with the male terminal 16 decreases, and thus, the contact resistance between the first cantilever spring 7 or the second cantilever spring 8 and the male terminal 16 is more than 9m omega, which is not desirable, because the distance between two side edges of the wave crest or the wave trough is far, when the pressure is applied, the deformation of the first cantilever spring leaf 7 or the second cantilever spring leaf 8 is large, the moving distance of the wave crest is more than 0.5mm, the required value is met, therefore, the distance between adjacent peaks of the first cantilever spring 7 or the second cantilever spring 8 is selected by the inventor to be 3 times to 32 times the thickness of the first cantilever spring 7 or the second cantilever spring 8.

In one embodiment, as shown in fig. 4 and 5, a terminal slot 11 is formed between the first side plate 1, the third side plate 3, the first connection reed 5 and the first cantilever reed 7, and the second side plate 2, the fourth side plate 4, the second connection reed 6 and the second cantilever reed 8, and the terminal slot 11 is configured for inserting and connecting a male terminal 16.

In one embodiment, as shown in fig. 1 and 3, the metal spring structure includes a plurality of first connection springs 5 and a plurality of first cantilever springs 7, and the plurality of first connection springs 5 and the plurality of first cantilever springs 7 are arranged at intervals; the connecting spring plate comprises a plurality of second connecting spring plates 6 and a plurality of second cantilever spring plates 8, and the plurality of second connecting spring plates 6 and the plurality of second cantilever spring plates 8 are arranged at intervals.

In terms of mechanical properties, the structure form adopts a plurality of first connection reeds 5 and a plurality of first cantilever reeds 7, gaps are arranged between the plurality of first connection reeds 5 and the plurality of first cantilever reeds 7, a plurality of second connection reeds 6 and a plurality of second cantilever reeds 8 are arranged, and the plurality of second connection reeds 6 and the plurality of second cantilever reeds 8 are arranged at intervals. The force of inserting the male terminal 16 into the terminal slot 11 can be dispersed, and the temperature rise value and the contact resistance value of the metal reed and the male terminal 16 can be effectively reduced.

In one embodiment, the distance between adjacent first connection springs 5 and first cantilever spring 7 is 1% -100% of the width of first cantilever spring 7; the spacing distance between the adjacent second connecting spring 6 and the second cantilever spring 8 is 1-100% of the width of the second cantilever spring 8.

In order to verify the influence of the spacing distance between the adjacent first connection reed 5 and the first cantilever reed 7 on the contact resistance of the metal reed structure, the inventor selects the metal reed structure consisting of the first connection reed 5 and the first cantilever reed 7 with the same shape and size, the male terminal 16 and the female terminal 15 with the same shape and size, and connects the metal reed with the female terminal 15 to observe the contact resistance between the male terminal 16 and the metal reed.

The contact resistance is detected by measuring the resistance at the contact position of the male terminal 16 and the metal reed using a micro resistance meter, and reading the value on the micro resistance meter, in this embodiment, the contact resistance is less than 50 μ Ω, which is an ideal value.

Table 5, the effect of the separation distance of first connection reed 5 and first cantilever reed 7 on the contact resistance between male terminal 16 and the metal reed structure:

as can be seen from table 5, when the distance between the first connection spring 5 and the first cantilever spring 7 is greater than 100% of the width of the first cantilever spring 7, the contact resistance is greater than 50 μ Ω, which is undesirable, and the existing processing method of the metal spring structure is stamping or cutting, and if the distance between the first connection spring 5 and the first cantilever spring 7 is too narrow, it is not easy to process, and in summary, the distance between the first connection spring 5 and the first cantilever spring 7 is defined as 1% -100% of the width of the first cantilever spring.

In the same manner as the above, the interval distance between the second connection spring 6 and the second cantilever spring 8 is set to 1% to 100% of the width of the second cantilever spring 8.

In one embodiment, at least one side hanging lug 12 with a U-shaped cross section is connected to the extending direction of the first side plate 1, the second side plate 2, the third side plate 3 and the fourth side plate 4. As shown in fig. 6, the extending direction of the first side plate 1, the second side plate 2, the third side plate 3, and the fourth side plate 4 is a direction perpendicular to the first connection spring 5.

In one embodiment, the first side plate 1 and the second side plate 2 are connected with at least one top hanging lug 13 with a U-shaped section in the side edge direction, as shown in fig. 6, and the side edge of the first side plate 1 and the second side plate 2 is the side opposite to the first connecting spring 5 and the second connecting spring 6 connected with the first side plate 1 and the second side plate 2.

According to actual use, specifically, as shown in fig. 8 to 11, when the metal reed structure and the female terminal 15 are mounted at 90 ° or 180 °, the top tab 13 and the side tab 12 may be provided at the same time, or only one of the top tab 13 or the side tab 12 may be used, and the arrangement may be performed according to actual needs. The side lugs 12 and the top lugs 13 can be used to connect the metal reed structure with the female terminal 15 more firmly, and the conductivity is better.

In one embodiment, as shown in fig. 6 to 7, the third side plate 3 and the fourth side plate 4 are connected with at least one plate-shaped connecting bridge 14 in the side edge direction.

As shown in fig. 8-11, when the metal spring structure is connected to the female terminal 15 in a matching manner, the application of the connecting bridge 14 is different from a two-piece metal spring structure, the metal spring structure can be integrally and directly inserted into the female terminal 15 to form the terminal slot 11, and when the male terminal 16 is inserted, the connecting bridge 14 can limit the male terminal 16 to a certain extent.

In one embodiment, the metal spring structure comprises one or more of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, beryllium, and lead.

To demonstrate the effect of different materials of the metal reed structure on the electrical conductivity, the inventors manufactured samples of metal reed structures with the same specification and size using different materials, and tested the electrical conductivity of the metal reed structures, respectively, and the experimental results are shown in table 6.

Table 6: conductivity of metal reed structure made of different materials

It can be seen from table 6 that the electrical conductivity of the metal reed structure made of metals of different materials is within the ideal value range, and in addition, phosphorus is a non-metal material, and cannot be directly used as the material of the metal reed structure, but can be added into other metals to form an alloy, so that the electrical conductivity and mechanical properties of the metal itself are improved. Therefore, the inventors set the material of the metal reed structure to contain one or more of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, beryllium, and lead.

In one embodiment, the material of the metal reed structure contains 0.1% -5% of tellurium-copper alloy, so that the metal reed structure has good conductivity and easy cutting performance, the electrical performance is ensured, and the processability can be improved.

In order to verify the influence of the content of tellurium in the tellurium-copper alloy on the conductivity of the metal reed structure in the material of the metal reed structure, the inventor selects 10 metal reed structures with the same shape for testing, the size of each metal reed structure is the same, the material of the metal reed structures is the tellurium-copper alloy, and the content of tellurium accounts for 0.05%, 0.1%, 0.2%, 0.5%, 0.8%, 1.2%, 2%, 3%, 5%, 6% and 7% respectively. The metal reed structure was subjected to current application, and the conductivity of the corresponding metal reed structure was measured, and the measurement results are shown in table 7. In this embodiment, the conductivity is preferably more than 99%.

Table 7: influence of tellurium-copper alloys with different tellurium contents on electric conductivity of metal reed structure

As is clear from Table 7, when the content ratio of tellurium is less than 0.1% or more than 5%, the conductivity is remarkably decreased and the desired value of conductivity cannot be satisfied. When the content of tellurium is 0.2% or more and 1.2% or less, the conductivity is the most preferable, and when the content of tellurium is more than 0.1% and less than 0.2%, or more than 1.2% and 5% or less, the conductivity satisfies the desired value, but the conductivity tends to be gradually lowered and the conductivity also tends to be lowered. Therefore, the inventor selects tellurium copper alloy with 0.1% -5% of tellurium content. Under the most ideal condition, 0.2-1.2% tellurium-copper alloy is selected.

In one embodiment, the metal reed structure material contains beryllium copper alloy, and the content of beryllium in the beryllium copper alloy is 0.05% -5%. Preferably, the content of beryllium in the material of the metal reed structure is 0.1-3.5%.

The metal reed structure contains beryllium, has high hardness, elastic limit, fatigue limit and wear resistance, also has good corrosion resistance, thermal conductivity and electrical conductivity, and does not generate sparks when being impacted.

In order to test the influence of the beryllium content on the conductivity of the metal reed structure, the inventor selects 10 metal reed structures with the same shape and the same width for testing, wherein each metal reed structure contains beryllium, and the content of the beryllium is respectively 0.03%, 0.05%, 0.1%, 0.2%, 1%, 1.8%, 3%, 3.5%, 5% and 6%. The test results are shown in table 8. In this embodiment, the conductivity of more than 99% is desirable.

Table 8: influence of different beryllium contents on conductivity of metal reed structure

As can be seen from table 8, when the content ratio of beryllium is less than 0.05% or more than 5%, the conductivity is significantly decreased, and the actual requirement cannot be satisfied. When the content of beryllium is 0.1% or more and 3.5% or less, the electrical conductivity is the best, so the inventor selects a metal reed structure with the content of beryllium of 0.05% -5%. Under the most ideal condition, a metal reed structure with the beryllium content of 0.1-3.5% is selected.

In one embodiment, the metal reed structure material contains phosphor bronze alloy, and the phosphor content in the phosphor bronze alloy is 0.01% to 1.5%. The phosphor bronze has the advantages of better corrosion resistance and abrasion resistance, can ensure that the metal reed structure has good contact and good elasticity, has excellent mechanical processing performance, and can quickly shorten the processing time of parts.

In order to test the influence of the phosphorus content on the conductivity of the metal reed structures, the inventor selects 10 metal reed structures with the same shape and the same width for testing, wherein each metal reed structure contains phosphorus, and the content of the phosphorus is respectively 0.001%, 0.005%, 0.01%, 0.05%, 0.1%, 0.5%, 1%, 1.5%, 2% and 2.5%. The test results are shown in table 9. In this embodiment, the conductivity of more than 99% is desirable.

Table 9: influence of different phosphorus contents on conductivity of metal reed structure

As can be seen from table 9, when the content ratio of phosphorus is less than 0.01% or more than 1.5%, the conductivity is significantly decreased, failing to meet the actual demand. The conductive property is best when the content of phosphorus is 0.05% or more and 0.5% or less, so the inventor selects a metal reed structure with a phosphorus content of 0.01% -1.5%. Under the most ideal condition, a metal reed structure with the phosphorus content of 0.05-0.5 percent is selected.

In one embodiment, the metal reed structure material contains lead brass alloy, and the content of lead in the lead brass alloy is 0.1% -5%. The lead brass alloy has the advantages of high strength, compact and uniform structure, good corrosion resistance, and excellent machining performance such as cutting, drilling and the like.

In order to test the influence of the lead content on the conductivity of the metal reed structure, the inventor selects 10 metal reed structures with the same shape and the same width for testing, wherein each metal reed structure contains lead, and the content of the lead is respectively 0.05%, 0.1%, 0.5%, 1%, 2%, 3%, 4%, 5%, 6% and 7%. The test results are shown in table 10. In this embodiment, the conductivity of more than 99% is desirable.

Table 10: influence of different lead contents on conductivity of metal reed structure

As can be seen from table 10, when the content ratio of lead is less than 0.1% or more than 5%, the conductivity is significantly decreased, and the actual demand cannot be satisfied. When the content of lead is 1% or more and 3% or less, the conductivity is the best, so the inventor selects a metal reed structure with 0.1% -5% of lead. Under the most ideal condition, a metal reed structure with 1-3 percent of lead content is selected.

In one embodiment, the material of first connection reed 5, second connection reed 6, first cantilever reed 7, and second cantilever reed 8 contains one or more of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, beryllium, and lead.

In one embodiment, at least a portion of the surface of the metal spring structure is coated to improve corrosion resistance and conductivity, thereby prolonging the service life of the metal spring structure.

Specifically, the first boss 9 and the second boss 10 are provided with a plating layer, and when the metal reed structure and the male terminal 16 are made of different materials, the plating layer can effectively reduce contact resistance between the metal reed structure and the male terminal 16, reduce voltage drop between the metal reed structure and the male terminal 16, and improve electrical performance.

In another embodiment, at the wave crests and wave troughs of the first connection reed 5 and the second connection reed 6, plating is provided at the wave crests and wave troughs of the first cantilever reed 7 and the second connection reed 8, so that the voltage drop between the metal reed structure and the female terminal 15 and the male terminal 16 is reduced, and the electrical performance is improved.

In another embodiment, the metal reed structure is provided with a coating layer, so that the metal reed structure obtains better electrical performance and prolongs the service life.

In one embodiment, the coating material includes one or more of gold, silver, nickel, tin, zinc, tin-lead alloy, silver-antimony alloy, palladium-nickel alloy, graphite silver, graphene silver, hard silver, and silver-gold-zirconium alloy. In most cases, the metal reed structure uses copper material, and copper as a kind of active metal can generate oxidation reaction with oxygen and water in the using process, so that one or more kinds of inactive metal are needed to be used as a coating, and the service life of the metal reed structure is prolonged. The conductivity and stability of the metal are superior to those of copper or copper alloy, so that the metal reed structure can obtain better electrical performance and longer service life.

In order to demonstrate the influence of different coating materials on the overall performance of the metal reed structure, the inventor used the same specification and material, adopted the metal reed structure of different coating materials, and the metal reed structure was provided with a coating on all, and performed a series of corrosion resistance time tests, and the experimental results are shown in table 11.

The corrosion resistance time test in table 11 is to put a metal reed structure sample into a salt spray test chamber, spray salt spray to each position of the sample, take out the sample every 20 hours, clean and observe the surface corrosion condition, namely a period, stop the test until the surface corrosion area is greater than 10% of the total area, and record the period number at that time. In this example, the number of cycles less than 80 was considered to be unacceptable.

Table 11: influence of different coating materials on corrosion resistance of metal reed structure sample piece

It can be seen from table 11 that, when the plating material contains the commonly used metals of tin, nickel and zinc, the experimental results are inferior to those of other selected metals, and the experimental results of other selected metals exceed the standard values more and the performance is more stable. Therefore, the inventor selects the material of the coating to contain one or more of gold, silver, nickel, tin, zinc, tin-lead alloy, silver-antimony alloy, palladium-nickel alloy, graphite silver, graphene silver, hard silver and silver-gold-zirconium alloy.

In one embodiment, the plating layer is provided by electroplating, electroless plating, magnetron sputtering, or vacuum plating.

The electroplating method is a process of plating a thin layer of other metals or alloys on the surface of metal by utilizing the electrolysis principle.

The chemical plating method is a deposition process for generating metal through controllable oxidation-reduction reaction under the catalysis of the metal.

The magnetron sputtering method is characterized in that electrons spirally run near the surface of a target by utilizing the interaction of a magnetic field and an electric field, so that the probability that the electrons collide with argon gas to generate ions is increased, and the generated ions collide with the surface of the target under the action of the electric field so as to sputter out a target material.

The vacuum plating method is to deposit various metal and non-metal films on the surface of the part by distillation, sputtering or other modes under vacuum condition.

In one embodiment, an electrical connector includes a female terminal 15 having a U-shaped configuration, a male terminal 16 having a plate shape, and a metal spring structure, the female terminal 15 having a top opening and two side openings, and a top tab 13 of the metal spring structure being configured to be connected to the top opening or one of the side openings. The top opening is the opening corresponding to the direction of insertion of the male terminal 16, and the side opening is the opening corresponding to the direction perpendicular to the direction of insertion of the male terminal 16, as shown in figures 8-11,

when the metal reed structure and the female terminal 15 are installed for 90 degrees or 180 degrees, the top hanging lug 13 and the side hanging lug 12 can be arranged at the same time, and the top hanging lug 13 or the side hanging lug 12 can be only used and arranged according to actual needs. As shown in fig. 9, the top suspension loop 13 is connected to the side opening, and as shown in fig. 10, the top suspension loop 13 is connected to the top opening.

In a specific embodiment, as shown in fig. 9-11, the side suspension loop 12 of the metal spring structure is configured to be connected to the top opening, or to one of the side openings, or to both side openings. Specifically, as shown in fig. 9, the side hangers 12 of the metal reed structure are connected to the top end opening, as shown in fig. 10, the side hangers 12 are connected to one of the side openings, as shown in fig. 11, and the side hangers 12 are connected to the side openings on both sides.

In a specific embodiment, as shown in fig. 10 to 11, the first connection spring 5, the second connection spring 6, the first cantilever spring 7, and the second cantilever spring 8 are disposed in the female terminal 15, an inner part of a wave peak of the first connection spring 5, the second connection spring 6, the first cantilever spring 7, and the second cantilever spring 8 is in contact with a mating surface of the male terminal 16, and an outer part of the wave peak is in contact with an inner surface of the female terminal 15. The direction toward the terminal insertion groove 11 is inner, and the opposite direction is outer.

The utility model discloses, with female end terminal 15 and the public end terminal 16 design three solitary part of metal reed structure, U type, not only the assembly of being convenient for reduces the processing degree of difficulty of female end terminal 15 mould moreover, can satisfy the plug of 90 and two 180 directions simultaneously, is applicable to the connection of electric connector equidirectional, reduce cost. The metal reed structure is provided with the first connecting reeds 5 and the second connecting reeds 6 in a plurality of corrugated shapes, the first cantilever reeds 7 in a plurality of corrugated shapes and the second cantilever reeds 8 in a plurality of corrugated shapes, so that the stability of the contact resistance can be effectively guaranteed, the force generated when the male terminal 16 is inserted can be effectively dispersed, the whole structure is simple, and the cost is low.

In one embodiment, as shown in Fn1, Fn2 of fig. 13, the elastic force of the first connection spring 5 or the second connection spring 6 applied to the male terminal 16 is 0.3N-98N. When the metal spring structure is fitted into the female terminal 15 of the U-shape and the male terminal 16 is inserted into the metal spring structure, the first connection spring 5 or the second connection spring 6 is deformed by being pressed, so that the first connection spring 5 or the second connection spring 6 has an elastic force applied to the male terminal 16.

In order to verify the influence of the elastic force exerted by the first connection reed 5 or the second connection reed 6 on the male terminal 16 on the contact resistance between the first connection reed 5 or the second connection reed 6 and the male terminal 16 and the influence on the insertion and extraction force of the male terminal 16, the inventor selects the same size of the first connection reed 5 or the second connection reed 6, the same male terminal 16 and the same female terminal 15, and the different elastic forces of the first connection reed 5 or the second connection reed 6, manufactures a series of electric connector samples, tests the contact resistance of the electric connector samples and the insertion and extraction force of the male terminal 16, and records the test values in the table 12.

The method for testing the insertion and extraction force of the male terminal 16 comprises the following steps: using a precision push-pull force gauge, the male terminal 16 is pushed into or pulled out of the metal reed structure, and the forces of the two are measured and averaged, and in this embodiment, it is not acceptable that the insertion/extraction force of the male terminal 16 is greater than 25N.

Table 12: influence of elastic force applied to the male terminal by the first or second connection spring on contact resistance between the first or second connection spring and the male terminal and on insertion and extraction force of the male terminal

As can be seen from table 12, when the elastic force exerted by the first connection reed 5 or the second connection reed 6 on the male terminal 16 is less than 0.3N, the contact force between the first connection reed 5 or the second connection reed 6 and the male terminal 16 is small, and the corresponding contact area is small, so that the contact resistance between the first connection reed 5 or the second connection reed 6 and the male terminal 16 is greater than 9m Ω, which is not in accordance with a desired value, and the larger the elastic force is, the smaller the contact resistance is; when the elastic force exerted by the first connection reed 5 or the second connection reed 6 on the male terminal 16 is greater than 98N, the clamping force of the first connection reed 5 or the second connection reed 6 on the male terminal 16 is too large, so that when the male terminal 16 is inserted into or pulled out of the metal reed structure, the friction force is large, the insertion and extraction force of the male terminal 16 is greater than 25N, the required value is not met, and the smaller the elastic force is, the smaller the insertion and extraction force of the male terminal 16 is. Therefore, the inventors set the elastic force of the first connection reed 5 or the second connection reed 6 exerted on the male terminal to 0.3N to 98N.

Further, when the elastic force of the first connection reed 5 or the second connection reed 6 exerted on the male terminal 16 is larger than 55N, the insertion and extraction force of the male terminal 16 is significantly increased, so the inventors further set the elastic force of the first connection reed 5 or the second connection reed 6 exerted on the male terminal to be 0.3N to 55N.

In one embodiment, the spring force exerted by first cantilever spring 7 or second cantilever spring 8 on male terminal 16 is in the range of 0.3N-98N, as shown by Fn3 in FIG. 14. When the metal spring structure is fitted into the female terminal 15 of the U-shape and the male terminal 16 is inserted into the metal spring structure, the first cantilever spring 7 or the second cantilever spring 8 is deformed by being pressed, so that the first cantilever spring 7 or the second cantilever spring 8 has an elastic force applied to the male terminal 16.

In order to verify the influence of the elastic force exerted by the first cantilever spring 7 or the second cantilever spring 8 on the male terminal 16 on the contact resistance between the first cantilever spring 7 or the second cantilever spring 8 and the male terminal 16 and the influence on the insertion and extraction force of the male terminal 16, the inventor selects the same size of the first cantilever spring 7 or the second cantilever spring 8, the same male terminal 16 and the same female terminal 15, and different elastic forces of the first cantilever spring 7 or the second cantilever spring 8, manufactures a series of electric connector samples, tests the contact resistance of the electric connector samples and the insertion and extraction force of the male terminal 16, and records the test values in the table 13.

Table 13: the influence of the elastic force exerted on the male terminal by the first or second cantilever spring leaf on the contact resistance between the first or second cantilever spring leaf and the male terminal and the insertion and extraction force of the male terminal

As can be seen from table 13, when the elastic force exerted on the male terminal by the first cantilever spring 7 or the second cantilever spring 8 is less than 0.3N, the contact force between the first cantilever spring 7 or the second cantilever spring 8 and the male terminal 16 is small, and the corresponding contact area is small, so that the contact resistance between the first cantilever spring 7 or the second cantilever spring 8 and the male terminal 16 is greater than 9m Ω, which is not in accordance with the required value, and the larger the elastic force is, the smaller the contact resistance is; when the elastic force exerted on the male terminal 16 by the first cantilever spring 7 or the second cantilever spring 8 is greater than 98N, the clamping force of the first cantilever spring 7 or the second cantilever spring 8 on the male terminal 16 is too large, so that when the male terminal 16 is inserted into or pulled out of the metal spring structure, the friction force is large, the insertion and extraction force of the male terminal 16 is greater than 25N, the required value is not met, and the smaller the elastic force is, the smaller the insertion and extraction force of the male terminal 16 is. Therefore, the inventors set the elastic force of the first cantilever spring 7 or the second cantilever spring 8 exerted on the male terminal to 0.3N-98N.

Further, when the elastic force of the first cantilever spring 7 or the second cantilever spring 8 exerted on the male terminal 16 is greater than 55N, the insertion and extraction force of the male terminal 16 is significantly increased, so the inventor further set the elastic force of the first cantilever spring 7 or the second cantilever spring 8 exerted on the male terminal to be 0.3N-55N.

In a specific embodiment, the metal spring structure is formed by integrally stamping a plate-shaped material. As shown in fig. 1 and 6, the metal spring structure is an integral punch forming structure, and is easy to process and low in cost.

While the foregoing is directed to several embodiments of the present invention, and various modifications and changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as disclosed in the specification, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "inner," "outer," and the like are used in the orientations and positional relationships illustrated in the drawings to facilitate the description of the invention and to simplify the description of the invention, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus be considered limited to the invention.

Furthermore, the terms "first", "second", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated.

In the present invention, unless otherwise specified or limited, the terms "mounted," "connected," and "fixed" are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other suitable relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Claims

1. A metal reed structure, comprising:

the first side plate and the third side plate are in the same plane, and the second side plate and the fourth side plate are in the same plane;

the connecting device also comprises at least one pair of first connecting reeds and second connecting reeds which are oppositely arranged, wherein two ends of each first connecting reed are respectively connected with the first side plate and the third side plate, and two ends of each second connecting reed are respectively connected with the second side plate and the fourth side plate;

the spring plate assembly comprises a first side plate and a second side plate, and is characterized by further comprising at least one pair of first cantilever spring pieces and second cantilever spring pieces which are arranged oppositely, one end of each first cantilever spring piece is connected with the first side plate, the other end of each first cantilever spring piece forms a free end, one end of each second cantilever spring piece is connected with the second side plate, and the other end of each second cantilever spring piece forms a free end.

2. The metal reed structure of claim 1, wherein the first connection reed and the second connection reed are arranged in opposite mirror images.

3. The metal spring structure of claim 1, wherein the first cantilever spring and the second cantilever spring are arranged in opposing mirror images.

4. The metal spring structure of claim 1, wherein the longitudinal cross-sections of the first and second connection springs are corrugated and the longitudinal cross-sections of the first and second cantilever springs are corrugated along the extension direction of the first and second connection springs.

5. A metal reed structure according to claim 4, wherein at least at the peaks or valleys of the first connection reed and/or the second connection reed, there are provided first bosses protruding toward the outside of the peaks or valleys; and at least at the wave crest or the wave trough of the first cantilever spring and/or the second cantilever spring, arranging a second boss which is convex towards the outer side of the wave crest or the wave trough.

6. The metal spring structure of claim 4, wherein the minimum vertical distance between the wave crest and the wave trough of the first connection spring or the second connection spring is 1 to 12 times the thickness of the first connection spring or the second connection spring.

7. The metal spring structure of claim 4, wherein the minimum vertical distance between the peak and trough of said first cantilever spring or said second cantilever spring is 1 to 12 times the thickness of said first cantilever spring or said second cantilever spring.

8. The metal spring structure of claim 4, wherein the distance between adjacent peaks of the first or second connection springs is 3-32 times the thickness of the first or second connection springs.

9. The metal spring structure of claim 4, wherein the distance between adjacent peaks of said first cantilever spring or said second cantilever spring is between 3 and 32 times the thickness of said first cantilever spring or said second cantilever spring.

10. The metal reed structure of claim 1, wherein the first side plate, the third side plate, the first connection reed, and the first cantilever reed form a terminal slot with the second side plate, the fourth side plate, the second connection reed, and the second cantilever reed.

11. The metal spring structure of claim 1, comprising a plurality of said first connection springs and a plurality of said first cantilever springs, wherein said plurality of said first connection springs and said plurality of said first cantilever springs are spaced apart; the connecting spring plate comprises a plurality of second connecting spring plates and a plurality of second cantilever spring plates, and the second connecting spring plates and the second cantilever spring plates are arranged at intervals.

12. The metal spring structure of claim 11, wherein the spacing distance between adjacent first connection springs and first cantilever spring is 1% -100% of the width of the first cantilever spring; and the spacing distance between the adjacent second connecting reeds and the second cantilever reeds is 1-100% of the width of the second cantilever reeds.

13. The metal reed structure of claim 1, wherein at least one side hanger having a U-shaped cross section is connected to the first side plate, the second side plate, the third side plate, and the fourth side plate in the extending direction.

14. The metal reed structure of claim 1, wherein the first side plate and the second side plate are connected to at least one top lug having a U-shaped cross section in a lateral direction.

15. A metal spring structure according to claim 1, characterized in that the third side plate and the fourth side plate are connected in the lateral direction by at least one plate-like connecting bridge.

16. The metal reed structure of claim 1, wherein the metal reed structure comprises a material selected from the group consisting of nickel, cadmium, zirconium, chromium, cobalt, manganese, aluminum, tin, titanium, zinc, copper, silver, gold, phosphorus, tellurium, beryllium, and lead.

17. The metal reed structure of claim 1, wherein at least a portion of the surface of the metal reed is coated.

18. The metal reed structure of claim 17, wherein the plating material comprises one of gold, silver, nickel, tin, zinc, tin-lead alloy, silver-antimony alloy, palladium-nickel alloy, graphite-silver, graphene-silver, hard silver, and silver-gold-zirconium alloy.

19. An electrical connector comprising a female terminal having a U-shaped configuration, a male terminal in the form of a blade, and a metal spring structure according to any one of claims 1 to 18, said female terminal having a top opening and two side openings, said top lugs of said metal spring structure being arranged to engage with said top opening or with one of said side openings.

20. The electrical connector of claim 19, wherein the side lugs of the metal spring structure are configured to engage the top opening, one of the side openings, or both of the side openings.

21. The electrical connector of claim 19, wherein the first connection spring, the second connection spring, the first cantilever spring and the second cantilever spring are disposed in the female terminal, wherein the first connection spring, the second connection spring, the first cantilever spring and the second cantilever spring contact the mating surface of the male terminal at an inner portion of the wave crest and contact the inner surface of the female terminal at an outer portion of the wave trough.

22. The electrical connector of claim 21, wherein the spring force exerted by the first or second connection spring on the male terminal is 0.3N-98N.

23. The electrical connector of claim 22, wherein the spring force exerted by the first or second connection spring on the male terminal is 0.3N-55N.

24. The electrical connector of claim 21, wherein the spring force exerted by the first or second cantilevered spring blades on the male terminal is 0.3N-98N.

25. The electrical connector of claim 24, wherein the spring force exerted by the first cantilever spring or the second cantilever spring on the male terminal is 0.3N-55N.

26. The electrical connector of claim 19, wherein the metal spring structure is integrally stamped and formed of a plate-like material.