CN215989324U

CN215989324U - Fisheye terminal

Info

Publication number: CN215989324U
Application number: CN202122120878.7U
Authority: CN
Inventors: 张致富
Original assignee: Shanghai Vico Precision Molding Co ltd
Current assignee: Shanghai Vico Precision Molding Co ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2022-03-08
Anticipated expiration: 2031-09-03

Abstract

The application discloses fisheye terminal, fisheye terminal includes embedding part and exposes the portion, wherein the embedding part includes a bottom and a deformable portion, the both ends of deformable portion are connected respectively in the bottom with expose the portion, deformable portion has a through-hole, so that deformable portion is defined as two deformable arms, is forming the through-hole every lateral wall of deformable arm forms an auxiliary groove, form the brace rod on the auxiliary groove, wherein expose the portion certainly the tip of embedding part extends.

Description

Fisheye terminal

Technical Field

The utility model relates to a circuit board component, in particular to a circuit board and a fisheye terminal thereof.

Background

Currently, the fisheye terminal is electrically connected to a circuit board by being combined with a PTH hole on a PCB. The mode is different from the traditional welding mode, and because the welding-free mode is adopted, the use of the soldering flux is reduced, and the adverse reaction in a high-temperature tin furnace is avoided.

Conventional fisheye terminals are mainly fisheye terminals, and when the fisheye terminals are mounted in PTH holes of a circuit board, the two elastic portions of the fisheye terminals are deformed and fitted into the PTH holes of the circuit board by pressing the fisheye terminals into the PTH holes.

However, the fisheye terminal in the prior art also has a plurality of defects.

First, when the fish-eye terminal in the related art is mounted on a circuit board, since the strength of the bottom of the fish-eye terminal in contact with the PCB is low when the fish-eye terminal is pressed into the PTH hole, the fish-eye terminal is easily deformed, and thus, when the elastic portion is not deformed, the bottom of the fish-eye terminal is already deformed, and the fish-eye terminal may be not properly mounted.

Secondly, after the fisheye terminal is assembled on the circuit board, the applied environment may cause the whole circuit board to vibrate, and the existing fisheye terminal may not stably maintain the electrical connection with the circuit board because of the unstable elastic deformation of the elastic part.

SUMMERY OF THE UTILITY MODEL

An advantage of the present invention is to provide a circuit board and a fish-eye terminal thereof, wherein the fish-eye terminal can be stably brought into contact with an internal conductor of a PTH of the circuit board after being inserted into a PTH hole of the circuit board, thereby maintaining good electrical conduction.

Another advantage of the present invention is to provide a circuit board and a fish-eye terminal thereof, wherein the fish-eye terminal forms a through hole, thereby effectively reducing stress in the middle of the fish-eye terminal, and maintaining the fish-eye terminal in a deformed state after deformation.

Another advantage of the present invention is to provide a circuit board and a fish-eye terminal thereof, wherein the fish-eye terminal is provided with a support rib, and the support rib can ensure that the fish-eye terminal has a larger holding force when the fish-eye terminal is pressed into a designated position of a PCB.

Another advantage of the present invention is to provide a wiring board and a fish-eye terminal thereof, wherein the fish-eye terminal can prevent breakage due to excessive force when being inserted into a PTH hole of the wiring board.

Another advantage of the present invention is to provide a circuit board and a fish-eye terminal thereof, wherein the fish-eye terminal has a simple structure and a low manufacturing cost.

To achieve at least one of the above advantages, the present invention provides a fisheye terminal including:

an insertion part including a bottom part and a deformable part having both ends connected to the bottom part and the exposed part, respectively, the deformable part having a through hole such that the deformable part is defined as two deformable arms, an auxiliary groove formed on each side wall of the deformable arms forming the through hole, the auxiliary groove having a support rib formed thereon; and

an exposed portion, wherein the exposed portion extends from an end of the embedded portion.

According to an embodiment of the present invention, each of the deformable arms protrudes outward such that each of the deformable arms forms an arch shape.

According to an embodiment of the present invention, the exposed portion includes a force application portion and an extension portion, and the force application portion extends from a direction forming a predetermined included angle with an extending direction of the fisheye terminal.

According to an embodiment of the present invention, an extending direction of the force application portion is perpendicular to an extending direction of the fisheye terminal.

According to an embodiment of the utility model, each side of the deformable arm forms a recess.

According to an embodiment of the utility model, the groove surface of the groove is arc-shaped

According to an embodiment of the present invention, the lateral dimension of the through hole gradually increases from the middle to both ends.

According to an embodiment of the utility model, the bottom is provided as a solid structure.

According to an embodiment of the utility model, the bottom section of the bottom is gradually increased in size from bottom to top, and any two intersecting surfaces of the bottom are in arc transition.

According to another aspect of the present invention, to achieve at least one of the above advantages of the present invention, the wiring board includes:

the circuit board comprises a circuit board main body, wherein at least one PTH hole is formed in the circuit board main body;

the fisheye terminal of any preceding claim, wherein the embedded portion of the fisheye terminal is embedded in the PTH hole.

Drawings

Fig. 1 shows a cross-sectional view of the wiring board of the present invention.

Fig. 2 shows a perspective view of the fisheye terminal of the utility model.

Fig. 3 shows a front view of the fisheye terminal of the utility model.

Fig. 4 shows a side view of the fisheye terminal of the utility model.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the utility model, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to fig. 1 to 4, a circuit board according to a preferred embodiment of the present invention will be described in detail below, wherein the circuit board includes a circuit board body 100 and at least one fish-eye terminal 300, wherein at least one PTH hole is provided on the circuit board body 100, wherein the fish-eye terminal 300 is pressed into the PTH hole to be electrically connected to a conductor provided in the PTH hole.

It is worth mentioning that, after the fisheye terminal 300 is pressed into the PTH hole, the fisheye terminal 300 is held in the PTH hole. Due to the installation mode, the fisheye terminal 300 and the circuit board main body 100 are not fixed with each other in a welding mode, so that the use of soldering flux is reduced, and adverse reaction in a high-temperature tin furnace is avoided.

Preferably, the fisheye terminal 300 includes an embedded portion 10 and an exposed portion 20, wherein the exposed portion 20 extends from an end of the embedded portion 10.

Preferably, the exposed portion 20 includes a force application portion 21 and an extension portion 22, and the force application portion 21 extends from a direction forming a predetermined angle with the extending direction of the fisheye terminal 300. In this way, when it is necessary to fit the fisheye terminal 300 into the PTH hole, the exposed portion 20 can be fitted into the PTH hole while applying a predetermined amount of force to the biasing portion 21.

Preferably, the extending direction of the biasing portion 21 is perpendicular to the extending direction of the fisheye terminal 300. In this way, when the fisheye terminal 300 is mounted in the circuit board main body 100, the end surface of the urging portion 21 close to the insertion portion 10 restricts the fisheye terminal 300 from further moving in the insertion direction, and the user can determine whether the fisheye terminal 300 is mounted in place or not by the relative positional relationship between the urging portion 21 and the circuit board main body 100 on the fisheye terminal 300.

The insertion portion 10 includes a bottom portion 11 and a deformable portion 12, and both ends of the deformable portion 12 are connected to the bottom portion 11 and the exposed portion 20, respectively.

The deformable portion 12 has a through hole 1201 so that the deformable portion 12 is defined as two deformable arms 121, wherein each of the deformable arms 121 protrudes outward to form each of the deformable arms 121 into an arcuate shape, so that, when the fisheye terminal 300 is fitted into the PTH hole, the arcuate deformable arms 121 are guided to be bent outward to fit against a metal hole wall of the PTH hole so as to be electrically conducted with the circuit board body 100.

Preferably, in the present embodiment, the lateral dimension of the through hole 1201 gradually increases from the middle to both ends, so that the pressure applied to the two deformable arms 121 can be gradually increased when the fisheye terminal 300 is mounted on the circuit board main body 100, and thus the fisheye terminal 300 is not broken by the pressure, and can be kept in contact with the metal hole wall of the PTH hole by good elastic deformation.

It is worth mentioning that the outer surface of each of the deformable arms 121 is formed into a curved surface so that the deformable arms 121 do not damage the PTH hole wall when the fisheye terminal 300 is fitted into the PTH hole. In addition, the deformable arm 121, the outer wall of which is a curved surface, can also increase the contact area between the fisheye terminal 300 and the wiring board body 100, so that the fisheye terminal 300 can be electrically conducted with the wiring board body 100.

Preferably, a groove 122 is formed on each side of the deformable arm 121, so that the entire deformable arm 121 can be more easily deformed. More preferably, the grooves 122 are formed on both sides of the deformable arm 121.

Preferably, the groove surface of the groove 122 is arc-shaped.

An auxiliary groove 123 is formed in each side wall of the deformable arm 121 forming the through-hole 1201. It is further preferable that the auxiliary groove 123 is formed with a support rib 124, wherein the support rib 124 can be closely attached to a hole wall of the PTH hole after the fisheye terminal 300 is mounted in the PTH hole, thereby preventing the fisheye terminal 300 from shaking with respect to the circuit board main body 100, so that the fisheye terminal 300 can be stably electrically conducted with the circuit board main body 100 even if the entire circuit board vibrates after the fisheye terminal 300 is mounted in the circuit board main body 100 because the fisheye terminal 300 is closely held in the PTH hole.

Preferably, the support rib 124 extends in a direction perpendicular to the direction in which the fisheye terminal 300 extends. Thus, after the fisheye terminal 300 is pressed into the PTH hole, the fisheye terminal 300 can stably contact the hole wall of the PTH while maintaining high elasticity.

Further, the bottom 11 is provided as a solid structure. It is understood that, since the bottom portion 11 is provided as a solid structure, the bottom portion 11 of the fisheye terminal 300 is not deformed when the fisheye terminal 300 is fitted into the PTH hole of the board body 100. That is, the bottom of the fisheye terminal 300 that contacts the circuit board body 100 has high strength and is not easily deformed, so that the bottom 11 is not deformed before the deformable arm 121 is deformed.

Further, the bottom portion 11 is formed in a trapezoidal shape in which a cross-sectional dimension of the bottom portion 11 from bottom to top is gradually increased, and any two intersecting surfaces of the bottom portion 11 are transited by an arc, so that the bottom portion 11 does not damage a hole wall of the PTH hole after the fisheye terminal 300 is assembled in the PTH hole.

It will be appreciated by persons skilled in the art that the embodiments of the utility model described above and shown in the drawings are given by way of example only and are not limiting of the utility model. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. Fisheye terminal, its characterized in that, fisheye terminal includes:

2. The fisheye terminal of claim 1 wherein each deformable arm projects outwardly so that each deformable arm forms an arcuate shape.

3. The fisheye terminal of claim 1 or claim 2 wherein the exposed portion comprises a force-applying portion and an extending portion, the force-applying portion extending from a direction at a predetermined angle to the direction in which the fisheye terminal extends.

4. The fisheye terminal of claim 3 wherein the direction of extension of the force application portion is perpendicular to the direction of extension of the fisheye terminal.

5. The fisheye terminal of claim 1 or claim 2 wherein each side of the deformable arm defines a recess.

6. The fisheye terminal of claim 5 wherein the groove surface of the groove is arcuate

7. The fisheye terminal of claim 1 or claim 2 wherein the through-hole has a transverse dimension that increases from the middle to the ends.

8. Fisheye terminal according to claim 1 or 2, characterised in that the bottom is provided as a solid structure.

9. The fisheye terminal of claim 8 wherein the bottom-to-top cross-sectional dimension of the base gradually increases through a circular arc transition between any two intersecting surfaces on the base.

10. The fisheye terminal of claim 8 wherein any two intersecting surfaces on the base are rounded.