CN214589323U - Fisheye terminal with double-layer structure and assembly thereof - Google Patents

Abstract

The utility model discloses a bilayer structure's fisheye terminal and subassembly thereof, this bilayer structure's fisheye terminal include each other bend with range upon range of laminating fixed two-layer fisheye terminal unit together, wherein the upper end of one deck fisheye terminal unit extends the shaping and has the extension piece, should extend the thickness of piece and the thickness of one deck fisheye terminal unit and equal, and should extend the piece and pass through the punching press and/or the mode of buckling forms elasticity female terminal. Because the thickness of this extension piece is 1/2 of bilayer structure flake terminal thickness, this extension piece is because the material thickness is thinner, and it has fine formability and raw material characteristic, can satisfy flexible application to the elasticity female terminal of welding process is exempted from to extension piece accessible punching press and/or bending mode formation, and the technical characteristic of elasticity female terminal is the same with the fashioned performance of single material thickness completely, and so solved conventional flake terminal because the material is thick, can't or be difficult to the problem of shaping complicated female terminal structure.

Description

Fisheye terminal with double-layer structure and assembly thereof

The technical field is as follows:

the utility model relates to a fisheye terminal technical field refers in particular to a bilayer structure's fisheye terminal and subassembly thereof.

Background art:

the fisheye terminal has the advantages that the fisheye terminal is simple to assemble, can be tightly connected with a PCB to transmit electric signals without a welding process, and has the characteristics of small insertion force, no welding, short process, vibration resistance, tolerance compensation, small damage to holes of a printed circuit board and the like.

In addition, the fisheye terminal has the replaceability of putting, if the device has the damage, can directly follow the PCB board remove, change new device can, have characteristics such as stable, simple, swift, can match littleer electrically conductive jack on the circuit board. During insertion, the two elastic parts of the fisheye terminal are extruded to elastically contract, so that the fisheye terminal is smoothly inserted into the conductive insertion hole of the circuit board, the fisheye terminal is electrically connected with the circuit board, welding is not needed, replacement is convenient and fast, and the fisheye terminal is inserted into the conductive insertion hole of the PCB by virtue of the contraction of the two elastic parts to derive a signal.

A conventional fish-eye terminal (Press fit) having a fish-eye portion that is Press-fitted into a conductive insertion hole of a PCB to achieve electrical connection; the traditional fisheye terminal is formed by punching a single-thickness material, the fisheye terminal is limited to be thick in material thickness, the other end, which is not a fisheye, of the fisheye terminal is connected with a structural part, or only a PIN PIN type male terminal structure can be formed, and the flexible application cannot be met. If the structure of the elastic female terminal with one fish eye and one elastic female terminal is manufactured by the traditional process, the part of the molded female terminal needs to be thinned, so that raw materials are wasted, rolled textures on the surface of a plate are damaged, and the elastic performance of the molded female terminal is influenced.

In view of the above, the present inventors propose the following.

The utility model has the following contents:

an object of the utility model is to overcome prior art not enough, provide a bilayer structure's fisheye terminal and subassembly thereof.

In order to solve the technical problem, the utility model discloses a following first technical scheme: this bilayer structure's fisheye terminal is including bending each other and fixing two-layer fisheye terminal unit together with range upon range of laminating, and wherein the upper end of one deck fisheye terminal unit extends the shaping and has the extension piece, and the thickness that should extend the piece equals with the thickness of one deck fisheye terminal unit, and should extend the piece and pass through the punching press and/or the mode of buckling formation elasticity female terminal.

Furthermore, in the above technical solution, each layer of fisheye terminal unit includes a base and a fisheye pin formed at the lower end of the base, the bases of the two layers of fisheye terminal units are integrally connected through a turnover connection part, and a fisheye, and a first elastic part and a second elastic part located at two sides of the fisheye and adapted to the conductive jack of the PCB are formed in the middle of the fisheye pin; the extension piece is formed by extending upwards along the upper end of the base.

Further, in the above technical solution, the fish eye is a through hole structure; or the fish eye is in a non-through hole structure with a pit.

Furthermore, in the above technical solution, the front surface of the fisheye pin is punched with a concave pit as a fisheye, and the back surface of the fisheye pin corresponding to the concave pit is stretched to form a boss, so as to increase the thickness of the fisheye pin.

Furthermore, in the above technical solution, the boss has a straight binding face, and the first elastic portion and the second elastic portion on both sides of the fisheye pin and both sides of the boss form a first groove and a second groove respectively; the fisheye pins of the two layers of fisheye terminal units are laminated, attached and assembled through the attaching surfaces of the bosses.

Further, in the above technical solution, a stopper pin is formed on the base, and the stopper pin is located above the folding connection portion.

Further, in the above technical solution, the connecting portion between the side surface of the base and the folding connecting portion is provided with a notch for reducing stress; alternatively, the side of the base is provided with notches for reducing stress.

In order to solve the technical problem, the utility model discloses a following second technical scheme: the fisheye terminal assembly with the double-layer structure comprises a female terminal structure and a male terminal structure which are matched with each other and inserted into each other, wherein the female terminal structure comprises the fisheye terminal and an elastic female terminal with the structures, and the elastic female terminal is formed at the upper end of the fisheye terminal; public terminal structure is including second flake terminal and shaping in this second flake terminal tip and with the public terminal of the bilayer structure of elasticity female terminal adaptation plug, and it includes that the second flake terminal unit that bends each other and laminate together with the laminating, and every layer of second flake terminal unit tip all extends the shaping and has the second extension piece that equals rather than the material thickness, two-layer second extension piece forms after laminating public terminal of bilayer structure.

Further, among the above-mentioned technical scheme, still including the plastic seat, the cartridge groove has been seted up upwards to the plastic seat along its lower extreme, and the opposite slot that link up the cartridge groove has been seted up downwards to this plastic seat upper end face, and the female terminal cartridge of elasticity of this female terminal structure is in the cartridge groove of this plastic seat, and the fisheye terminal of this female terminal structure appears outside this plastic seat lower extreme.

In order to solve the above technical problem, the utility model discloses a following third technical scheme: the fisheye terminal with the double-layer structure comprises two layers of fisheye terminal units which are mutually bent to be laminated and attached together, wherein the upper end of each layer of fisheye terminal unit is extended and formed with an extension piece, the middle part of each extension piece is bent and formed with a spring structure protruding outwards, and after the extension pieces of the two layers of fisheye terminal units are butted, the upper ends of the two extension pieces are riveted into a whole to be used as a jacking contact part, and the upper end of the jacking contact part is provided with an arc jacking surface; each layer of fisheye terminal unit comprises a base part and a fisheye pin formed at the lower end of the base part, the base parts of the two layers of fisheye terminal units are integrally connected through a turnover connecting part, and fisheyes, a first elastic part and a second elastic part which are positioned at two sides of the fisheyes and are matched with the conductive jacks of the PCB are formed in the middle of the fisheye pin; the extension piece is formed by extending upwards along the upper end of the base.

After the technical scheme is adopted, compared with the prior art, the utility model has following beneficial effect:

1. the utility model discloses bilayer structure's fisheye terminal is for being fixed bilayer structure fisheye terminal together by the range upon range of laminating of two-layer fisheye terminal unit, and wherein the upper end of one deck fisheye terminal unit extends the shaping and has the extension piece, the thickness that should extend the piece equals with the thickness of one deck fisheye terminal unit, the thickness that should extend the piece promptly is 1/2 of bilayer structure fisheye terminal thickness, promptly should extend the piece because the material is thick thinner, it has fine formability and raw and other materials characteristic, can satisfy flexible application, so that extend piece accessible punching press and/or the mode of buckling formation exempt from the elasticity female terminal of welding technology, and the technical character of elasticity female terminal is the same with the thick fashioned performance of single material completely, so solved conventional fisheye terminal because of the material thick, can not or be difficult to the problem of the complicated female terminal structure of shaping.

2. The utility model discloses a fisheye terminal directly impresses behind the PCB board, forms independent female end connecting device or public end connecting device, also can be through array installation, forms the board of many PIN numbers to board connected system.

3. The utility model discloses bilayer structure's fisheye terminal subassembly is the female end connector subassembly of a fisheye solderless process, and a plurality of PINs (being the fisheye participate in promptly) once only impress the PCB board installation, save a large amount of man-hours of installation, greatly reduced combined cost.

4. The utility model can be made into an elastic jacking terminal structure which is in a shape of Chinese character 'zhong', and because the upper ends of two extending pieces are riveted into a whole and are used as jacking contact parts, the jacking contact parts have high strength and stable structure; when the top pressure contact part is in top pressure contact with the PCB, the spring structure is compressed to form upward elastic force, so that the upper end face of the top pressure contact part is driven to form stable contact with the PCB, and the conduction stability is ensured.

Description of the drawings:

fig. 1 is a front view of a first embodiment of a fisheye terminal with a double-layer structure according to the present invention;

fig. 2 is an expanded view of a first embodiment of the fisheye terminal with a double-layer structure of the present invention;

fig. 3 is a front view of another structure of the fisheye terminal of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is a fragmentary view of FIG. 4;

fig. 6 is an assembly view of the fish-eye terminal assembly of the double-layered structure of the present invention;

fig. 7 is an expanded view of the male terminal structure of the fish-eye terminal assembly of the present invention;

fig. 8 is an assembly view of the female terminal structure and the plastic seat of the fish-eye terminal assembly of the double-layered structure of the present invention;

fig. 9 is a front view of a fisheye terminal of a two-layer structure of the present invention;

fig. 10 is a left side view of a fisheye terminal of a two-layer structure of the present invention;

fig. 11 is a diagram illustrating a state of the fisheye terminal of the second embodiment of the present invention.

The specific implementation mode is as follows:

the present invention will be further described with reference to the following specific embodiments and accompanying drawings.

The first embodiment is as follows:

as shown in fig. 1-5, the fisheye terminal has a double-layer structure, the fisheye terminal 10 includes two layers of fisheye terminal units 1 that are bent to be fixed together in a laminating manner, wherein an extension piece 2 is formed at the upper end of one layer of fisheye terminal unit 1 in an extending manner, the thickness of the extension piece 2 is equal to that of one layer of fisheye terminal unit 1, and the extension piece 2 forms an elastic female terminal 20 by stamping and/or bending. The utility model discloses a by the fixed bilayer structure flake terminal together of the range upon range of laminating of two-layer flake terminal unit 1, and wherein the upper end extension shaping of one deck flake terminal unit 1 has extension piece 2, the thickness that should extend piece 2 equals with the thickness of one deck flake terminal unit 1, the thickness that should extend piece 2 is 1/2 of bilayer structure flake terminal thickness promptly, promptly this extension piece 2 is because the material is thick thinner, it has fine formability and raw and other materials characteristic, can satisfy flexible application, so that extension piece 2 can form the elasticity female terminal 20 of exempting from the welding process through punching press and/or the mode of buckling, and the technical characteristic of elasticity female terminal 20 is the same with the thick fashioned performance of single material completely; therefore, the problem that the conventional fisheye terminal cannot or is difficult to form a complex female terminal structure due to thick material is solved.

Each layer of fisheye terminal unit 1 comprises a base 11 and a fisheye pin 12 formed at the lower end of the base 11, and the extension piece 2 is formed by extending upwards along the upper end of the base 11; the base parts 11 of the two layers of fisheye terminal units 1 are integrally connected through the turnover connecting parts 13, and the base parts 11 and the fisheye pins 12 of the two layers of fisheye terminal units 1 correspond to each other one by one and are completely overlapped.

The shaping has fisheye 121 and is located fisheye 121 both sides and with first elastic part 122 and the second elastic part 123 of the electrically conductive jack adaptation of PCB board in the middle part of fisheye pin 12, this first elastic part 122 and second elastic part 123 all are the arc, it has good elastic force, so that this fisheye pin 12 inserts behind the electrically conductive jack of PCB board, this first elastic part 122 and second elastic part 123 all can by the outside-in compression, in order to produce from inside to outside elasticity, in order to guarantee that fisheye pin 12 stably assembles in the electrically conductive jack of this PCB board, make the utility model discloses be fixed in on the PCB board, can refer to that fig. 6 is shown.

The fish eye 121 is a through hole structure, that is, the fish eye 121 penetrates through the front and back surfaces of the middle part of the fish eye pin 12.

The fish eye 121 can be another structure: the fisheye 121 is a non-through hole structure having a pit. Specifically, the front surface of the fisheye pin 12 is punched with a concave pit as a fisheye 121, and the back surface of the fisheye pin 12 corresponding to the concave pit is stretched to form a boss 124, so as to increase the thickness of the fisheye pin 12, and thereby a double-layer fisheye structure capable of adjusting the thickness of the fisheye structure and increasing the riveting elasticity of the terminal is extended, so as to meet different use requirements.

Specifically, as shown in fig. 4-5, the fisheye pin 12 has a plate thickness T, and when a concave pit is punched on the front surface of the fisheye pin 12 to serve as a fisheye 121, a boss with a certain thickness is extruded and stretched on the back surface of the fisheye pin 12 corresponding to the contour shape of the concave pit, and the height of the boss is S; the boss 124 has a straight attachment surface 120, and a first groove 125 and a second groove 126 are formed on the first elastic part 122 and the second elastic part 123 on the two sides of the fisheye pin 12 and the two sides of the boss 124 respectively, that is, the first groove 125 and the second groove 126 are also S high; the fisheye terminal of the non-through hole of double-layer structure is formed through the overturning molding, the fisheye pins 12 of the two layers of fisheye terminal units 1 are laminated, laminated and assembled through the binding surfaces 120 of the bosses 124, namely, the two bosses are bound together through the respective binding surfaces 120, and the first groove body 125/the second groove body 126 outside the bosses are butted to form two gaps 2S with stretching height, so that an elastic double-layer fisheye structure similar to an X shape is formed, and the total thickness H of the fisheye terminal of the structure is 2T + 2S.

In order to improve rigidity and strength when the fisheye terminal is pressed into the PCB, a catch pin 111 is formed on the base 11, and the catch pin 111 is located above the folded connection 13, as shown in fig. 3.

The connecting part of the side surface of the base part 11 and the folding connecting part 13 is provided with a notch 112 for reducing stress; alternatively, the side surface of the base 11 is provided with a notch 112 for reducing stress.

When the utility model is manufactured, two shapes of the fisheye terminal unit 1 connected through the material bridge are formed by punching a metal plate with equal material thickness, and the upper end of one shape of one fisheye terminal unit 1 is provided with an extension piece 2, and the thickness of the extension piece 2 is equal to that of one layer of fisheye terminal unit 1; after fisheyes are respectively punched on the shapes of the two fisheye terminal units 1, a single fisheye terminal unit 1 with thick material is formed; then, bending and turning 180 degrees along the central line of the middle part of the material bridge to enable the two fisheye terminal units 1 to be laminated, attached and fixed together to form a fisheye terminal with a double-layer structure; at the same time, the extension piece 2 is punched and/or bent to form the elastic female terminal 20, thereby completing the manufacturing process.

To sum up, the utility model discloses a by the range upon range of fixed bilayer structure flake terminal together of laminating of two-layer flake terminal unit 1, and wherein the upper end of one deck flake terminal unit 1 extends the shaping and has extension piece 2, the thickness that should extend piece 2 equals with the thickness of one deck flake terminal unit 1, the thickness that should extend piece 2 is 1/2 of bilayer structure flake terminal thickness promptly, this extension piece 2 is because the material is thick thinner, it has fine formability and raw and other materials characteristic, can satisfy flexible application, so that extension piece 2 accessible punching press and/or the mode of buckling form exempt from the elasticity female terminal 20 of welding technology, and the technical characteristic of elasticity female terminal 20 is identical with the thick fashioned performance of single material, so solved conventional flake terminal because of the material is thick, can not or be difficult to the problem of the complicated female terminal structure of shaping.

As shown in fig. 1-7, the fisheye terminal assembly with a double-layer structure includes a female terminal structure 100 and a male terminal structure 400 that are adapted to each other and inserted into each other, where the female terminal structure 100 includes a fisheye terminal 10 and an elastic female terminal 20 having the above-mentioned structures, the elastic female terminal 20 is formed at the upper end of the fisheye terminal 10, the male terminal structure 400 includes a second fisheye terminal 4 and a double-layer structure male terminal 40 that is formed at the end of the second fisheye terminal 4 and adapted to be inserted into each other with the elastic female terminal 20, the second fisheye terminal 4 includes two layers of second fisheye terminal units 41 that are bent to be laminated and attached together, and a second extending piece 42 having the same material thickness as that of the second fisheye terminal unit 41 is formed at the end of each layer of the second fisheye terminal unit 41, and the double-layer structure male terminal 40 is formed after the two layers of second extending pieces 42 are attached.

The female terminal structure 100 is directly pressed into the PCB through the fisheye terminal 10 to form an independent female terminal connection device, or can be mounted in an array manner to form a multi-PIN female terminal to board connection system, as shown in fig. 6

The male terminal structure 400 is directly pressed into the PCB through the second fisheye terminal 4 to form an independent male terminal connection device, or may be mounted in an array manner to form a PIN-number-multiple male terminal board-to-board connection system, as shown in fig. 6.

The above-mentioned female end-plate-to-plate connection system is combined with the male end-plate-to-plate connection system to form a pure terminal structure plate-to-plate connection system, as shown in fig. 6.

The structure of the second fisheye terminal unit 41 is the same as that of the fisheye terminal unit 1, and the same technical effects can be achieved, and details are not repeated here.

As shown in fig. 8, the fisheye terminal assembly of the above-mentioned double-layer structure further includes a plastic seat 3, the plastic seat 3 has an insertion slot 31 opened upward along its lower end surface, the upper end surface of the plastic seat 3 has a slot 32 opened downward to penetrate through the insertion slot 31, the elastic female terminal 20 of the female terminal structure 100 is inserted into the insertion slot 31 of the plastic seat 3, and the fisheye terminal 10 of the female terminal structure 100 is exposed outside the lower end surface of the plastic seat 3, i.e., the fisheye pin of the fisheye terminal 10 is exposed outside the lower end surface of the plastic seat 3, so as to be inserted into the PCB board. The female terminal structure 100 and the plastic seat 3 are combined to form a female terminal connector with a fisheye welding-free process, and a plurality of PINs (namely fisheye PINs 12) are pressed into a PCB for installation at one time, so that a large amount of installation time is saved, and the comprehensive cost is greatly reduced.

Example two:

as shown in fig. 9-11, the fisheye terminal has a double-layer structure, and the fisheye terminal includes two layers of fisheye terminal units 1 that are mutually bent to be laminated and attached together, and the upper end of each layer of fisheye terminal unit 1 is extended to form an extension piece 2, the middle of the extension piece 2 is bent to form an outwardly protruding spring structure 21, and after the extension pieces 2 of the two layers of fisheye terminal units 1 are butted, the upper ends of the two extension pieces 2 are riveted into a whole and used as a jacking contact portion 22 to form an elastic jacking terminal structure.

The cross section of the spring structure 21 is in a transverse U shape, as shown in FIG. 10, which has good elasticity; of course, the cross-section of the spring structure 21 may also have other shapes, such as a transverse V-shape, a W-shape, etc.

The elastic pressing terminal structure is in a shape of Chinese character 'zhong', and because the upper ends of the two extending pieces 2 are riveted into a whole, the strength of the pressing contact part 22 can be greatly improved; the pressing contact portion 22 is located above the spring structure 21, so that after the pressing contact portion 22 forms a pressing contact with the PCB, the spring structure 21 is compressed to form an upward elastic force, thereby driving the upper end surface of the pressing contact portion 22 to form a stable contact with the PCB, and ensuring the stability of conduction.

The upper end of the jacking contact part 22 is provided with an arc jacking surface, and the jacking contact part 22 can be in stable contact with the PCB plate through the point contact formed by the arc jacking surface and the PCB plate even if the elastic jacking terminal structure deviates in the installation process, so that the conduction stability is ensured.

The fisheye terminal unit 1 of the third embodiment is completely the same as the fisheye terminal unit 1 of the first embodiment, and achieves the same technical effects, for example: each layer of fisheye terminal unit 1 comprises a base part 11 and a fisheye pin 12 formed at the lower end of the base part 11, the base parts 11 of the two layers of fisheye terminal units 1 are integrally connected through a turnover connecting part 13, and fisheyes 121, a first elastic part 122 and a second elastic part 123 which are positioned at two sides of the fisheyes 121 and are matched with the conductive jacks of the PCB are formed in the middle of the fisheye pin 12; the extension piece 2 is formed to extend upward along the upper end of the base 11. Therefore, detailed description is not repeated herein.

The elastic jacking terminal structure can be installed in an array mode to form a multi-PIN-number elastic jacking plate-to-board connection system, as shown in fig. 11, the elastic jacking terminal structure can directly realize the board-to-board electric connection function, saves a relative connection device on another PCB, and achieves a welding-free process, so that the cost of raw materials, parts, welding assembly and other comprehensive systems is greatly saved, and the elastic jacking terminal structure has great competitiveness and market prospect.

Of course, the above description is only an exemplary embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the constructions, features, and principles of the present invention in accordance with the claims of the present invention are intended to be included in the scope of the present invention.

Claims (10)

1. The utility model provides a fisheye terminal of bilayer structure which characterized in that: the fisheye terminal (10) comprises two layers of fisheye terminal units (1) which are mutually bent to be fixed together in a laminated and attached mode, wherein an extension piece (2) is formed at the upper end of one layer of fisheye terminal unit (1) in an extending mode, the thickness of the extension piece (2) is equal to that of one layer of fisheye terminal unit (1), and the extension piece (2) forms an elastic female terminal (20) in a stamping and/or bending mode.

2. The fisheye terminal of claim 1 in a two-layer configuration, wherein: each layer of fisheye terminal unit (1) comprises a base part (11) and fisheye pins (12) formed at the lower end of the base part (11), the base parts (11) of the two layers of fisheye terminal units (1) are integrally connected through a turnover connecting part (13), fisheyes (121) and a first elastic part (122) and a second elastic part (123) which are positioned at two sides of the fisheyes (121) and are matched with the conductive jacks of the PCB are formed in the middle of the fisheye pins (12); the extension sheet (2) is formed by extending upwards along the upper end of the base (11).

3. The fisheye terminal of claim 2 in a two-layer configuration, wherein: the fish eye (121) is of a through hole structure; alternatively, the fish eye (121) has a non-through hole structure with a pit.

4. The fisheye terminal of claim 3 in a two-layer configuration, wherein: the front surface of the fisheye pin (12) is punched with a concave pit as a fisheye (121), and the part of the back surface of the fisheye pin (12) corresponding to the concave pit is stretched to form a boss (124) so as to increase the thickness of the fisheye pin (12).

5. The fisheye terminal of claim 4 in a two-layer configuration, wherein: the lug boss (124) is provided with a straight binding surface (120), and a first groove body (125) and a second groove body (126) are respectively formed on the first elastic part (122) and the second elastic part (123) on the two sides of the fisheye pin (12) and the two sides of the lug boss (124); the fisheye pins (12) of the two layers of fisheye terminal units (1) are laminated, attached and assembled through the attaching surfaces (120) of the bosses (124).

6. The fisheye terminal of claim 2 in a two-layer configuration, wherein: the base (11) is formed with a stop pin (111), and the stop pin (111) is positioned above the folding connecting part (13).

7. The fisheye terminal of claim 6 having a two-layer structure, wherein: a notch (112) for reducing stress is arranged at the connecting part of the side surface of the base part (11) and the turnover connecting part (13); alternatively, the side surface of the base (11) is provided with a notch (112) for reducing stress.

8. The utility model provides a fisheye terminal subassembly of bilayer structure, its female terminal structure (100) and public terminal structure (400) including mutual adaptation butt joint, its characterized in that:

the female terminal structure (100) comprises the fisheye terminal (10) as claimed in any one of the claims 1-7 and the elastic female terminal (20), wherein the elastic female terminal (20) is formed at the upper end of the fisheye terminal (10);

public terminal structure (400) including second fisheye terminal (4) and shaping in this second fisheye terminal (4) tip and with female terminal (20) adaptation of elasticity to the bilayer structure public terminal (40) of inserting, second fisheye terminal (4) it includes that bend each other with two-layer second fisheye terminal unit (41) that the range upon range of laminating is in the same place, and every layer of second fisheye terminal unit (41) tip all extends the shaping and has rather than thick second extension piece (42) that equals of material, two-layer second extension piece (42) form after laminating bilayer structure public terminal (40).

9. The fisheye terminal assembly of claim 8, wherein the fisheye terminal assembly comprises: still including plastic seat (3), cartridge groove (31) have upwards been seted up to plastic seat (3) along its lower extreme face, and this plastic seat (3) upper end face is seted up downwards and is link up cartridge groove (31) to slot (32), and elasticity female terminal (20) cartridge of this female terminal structure (100) is in cartridge groove (31) of this plastic seat (3), and fisheye terminal (10) of this female terminal structure (100) are revealed outside this plastic seat (3) lower extreme face.

10. The utility model provides a fisheye terminal of bilayer structure which characterized in that: the fisheye terminal (10) comprises two layers of fisheye terminal units (1) which are mutually bent to be laminated and attached together, an extension piece (2) is formed at the upper end of each layer of fisheye terminal unit (1) in an extending mode, an outward convex spring structure (21) is formed in the middle of each extension piece (2) in a bending mode, after the extension pieces (2) of the two layers of fisheye terminal units (1) are butted, the upper ends of the two extension pieces (2) are riveted into a whole to serve as a jacking contact part (22), and an arc-shaped jacking surface is arranged at the upper end of the jacking contact part (22);

each layer of fisheye terminal unit (1) comprises a base part (11) and fisheye pins (12) formed at the lower end of the base part (11), the base parts (11) of the two layers of fisheye terminal units (1) are integrally connected through a turnover connecting part (13), fisheyes (121) and a first elastic part (122) and a second elastic part (123) which are positioned at two sides of the fisheyes (121) and are matched with the conductive jacks of the PCB are formed in the middle of the fisheye pins (12); the extension sheet (2) is formed by extending upwards along the upper end of the base (11).

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