CN114447667A

CN114447667A - Connector, metal elastic sheet and PCB connecting structure

Info

Publication number: CN114447667A
Application number: CN202111661965.1A
Authority: CN
Inventors: 刘冉; 孙远辉
Original assignee: Tonly Electronics Holdings Ltd
Current assignee: Tonly Electronics Holdings Ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-05-06

Abstract

The invention discloses a connector, a metal elastic sheet and a PCB connecting structure, which comprises an insulating shell, wherein a cavity is arranged in the insulating shell; the metal elastic sheet is embedded in the cavity and comprises an elastic sheet main body, a first conductive end and a second conductive end, wherein the first conductive end and the second conductive end are arranged at two ends of the elastic sheet main body; when the insulating shell is connected with the PCB, the first conductive end protrudes out of the cavity and is in electrical contact with the PCB, and the second conductive end is used for being electrically connected with a metal wire. The invention realizes the detachable connection between the PCB and the connector on the premise of ensuring the effective transmission of current signals, is convenient for quickly replacing the connector and improves the maintenance speed.

Description

Connector, metal elastic sheet and PCB connecting structure

Technical Field

The invention relates to the technical field of PCB (printed circuit board), in particular to a connector, a metal elastic sheet and a PCB connecting structure.

Background

A Printed Circuit Board (PCB) is one of the important parts in the electronic industry, and can replace complicated wiring to realize electrical connection between components in a Circuit, thereby simplifying the assembly and soldering of electronic products, reducing the wiring workload in the conventional manner, and greatly reducing the labor intensity of workers.

In the prior art, the PCB board is connected to the PCB board by means of an FFC (Flexible Flat Cable) or a dupont pin. As shown in fig. 1, fig. a is an FFC connection mode, where FFC connectors 11 are respectively welded to two PCB boards 4, and then FFC flexible printed circuit (FFC) conductors 12 are inserted into the FFC connectors 11 to electrically connect the two PCB boards 4; fig. B shows a dupont pin connection method, in which the male connector 12 and the female connector 13 are respectively soldered to the two PCB boards 4, and then the male connector 12 is inserted into the female connector 13 to electrically connect the two PCB boards 4.

In order to ensure effective transmission of current signals, the two types of PCB connection modes both need to weld the connector on the PCB in advance, so that when the connector is in fault and abnormal, the connector cannot be quickly replaced, and the maintenance speed is influenced.

Disclosure of Invention

The invention mainly aims to provide a connector, a metal elastic sheet and a PCB connecting structure, aiming at realizing detachable connection between a PCB and the connector on the premise of ensuring effective transmission of current signals, facilitating quick replacement of the connector and improving the maintenance speed.

In order to achieve the purpose, the invention provides a connector which comprises an insulating shell, wherein the insulating shell is detachably connected with a PCB, and a cavity is arranged in the insulating shell; the metal elastic sheet is embedded in the cavity and comprises an elastic sheet main body, a first conductive end and a second conductive end, wherein the first conductive end and the second conductive end are arranged at two ends of the elastic sheet main body; when the insulating shell is connected with the PCB, the first conductive end protrudes out of the cavity and is in electrical contact with the PCB, and the second conductive end is used for being electrically connected with a metal wire.

Optionally, the first conductive end is a first concave structure, and the bottom of the first concave structure is attached to the conductive portion of the PCB; the second conductive end is of a second concave structure, and the metal wire is embedded in the second concave structure.

Optionally, a protruding portion is disposed at a bottom of the first concave structure, and the protruding portion is in fit with the conductive portion.

Optionally, the elastic sheet main body is of any one of a U-shaped structure, a V-shaped structure and an S-shaped structure.

Optionally, the first concave structure is a V-shaped structure, and/or the second concave structure is a U-shaped structure.

Optionally, a folded edge pair is arranged on one side of the elastic sheet main body connected with the second conductive end, and two folded edges of the folded edge pair are arranged oppositely; the inside of insulating housing is equipped with the depressed part, works as metal shell fragment inlay in when insulating housing, the hem pair inlay in the depressed part.

Optionally, one side of the insulating housing contacting the PCB is provided with a fastening portion, and the PCB is provided with an assembly hole adapted to the fastening portion.

Optionally, a positioning column is arranged on one side of the insulating shell, which is in contact with the PCB, and the PCB is provided with a positioning hole matched with the positioning column.

In order to achieve the above object, the present invention further provides a metal spring, which includes a spring main body, and a first conductive end and a second conductive end disposed at two ends of the spring main body, wherein the first conductive end is in a V-shaped structure and is used for electrically connecting to a PCB, and/or the second conductive end is in a U-shaped structure and is used for embedding a metal wire.

In order to achieve the above object, the present invention further provides a PCB connecting structure, which includes a PCB and the connector, wherein the PCB is detachably connected to the connector.

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

by utilizing the conductive characteristic of the metal elastic sheet, the first conductive end of the metal elastic sheet is electrically contacted with the PCB, and the second conductive end of the metal elastic sheet is electrically connected with the metal wire, so that the metal wire, the metal elastic sheet and the PCB are sequentially electrically connected, and the effective transmission of current signals is ensured. In addition, the connector is different from the connector welded with the PCB in the traditional technology, the connector is detachably connected with the PCB, the connector can be quickly replaced conveniently through detachable connection, and the maintenance speed is improved.

Drawings

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

Fig. 1 is a schematic structural diagram of an FFC connection manner and a dupont pin connection manner in the background art;

FIG. 2 is a schematic view of a connector according to an embodiment of the present invention;

FIG. 3 is an internal block diagram of an embodiment of the connector of the present invention;

fig. 4 is a schematic structural view of an insulating housing in an embodiment of the connector of the present invention;

fig. 5 is a schematic structural diagram of a metal dome in an embodiment of the connector of the invention;

FIG. 6 is a schematic diagram of a PCB board in an embodiment of the connector of the present invention;

FIG. 7 is a schematic structural view of a connector before being assembled with a PCB board in an embodiment of a PCB board connection structure of the present invention;

FIG. 8 is a schematic structural view of a connector and a PCB after assembly in an embodiment of the PCB connection structure of the present invention;

the names of the components identified in the figures are as follows:

1. an insulating housing; 101. a cavity; 102. a recessed portion; 2. a fastening part; 3. a metal spring sheet; 301. a spring plate main body; 302. a first conductive terminal; 303. a second conductive terminal; 304. a protrusion; 305. folding edges; 4. a PCB board; 401. a conductive portion; 402. an assembly hole; 403. positioning holes; 5. a metal wire; 6. a positioning column; 11. an FPC connector; 12. FFC flexible flat conductors; 13. a male connector; 14. female connector

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the description is only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The connector is required to be welded on a PCB in advance in order to ensure effective transmission of current signals in the prior art, so that when the connector breaks down abnormally, the connector cannot be replaced quickly, and the maintenance speed is influenced.

The embodiment discloses a connector, and referring to fig. 2-6, the connector comprises an insulating shell 1, wherein the insulating shell 1 is detachably connected with a PCB 4, and a cavity 101 is arranged inside the insulating shell 1; the metal elastic sheet 3 is embedded in the cavity 101, and the metal elastic sheet 3 comprises an elastic sheet main body 301, a first conductive end 302 and a second conductive end 303, wherein the first conductive end 302 and the second conductive end 303 are arranged at two ends of the elastic sheet main body 301; when the insulating housing 1 is connected to the PCB 4, the first conductive terminal 302 protrudes out of the cavity 101 and is electrically connected to the PCB 4, and the second conductive terminal 303 is electrically connected to the metal wire 5.

Through the embodiment, by utilizing the conductive characteristic of the metal dome 3, the first conductive end 302 of the metal dome 3 is electrically contacted with the PCB 4, and the second conductive end 303 of the metal dome 3 is electrically connected with the metal wire 5, so as to realize the sequential electrical connection of the metal wire 5-the metal dome 3-the PCB 4, and ensure the effective transmission of the current signal. In addition, the connector is detachably connected with the PCB 4, so that the connector can be replaced quickly and quickly conveniently through the detachable connection, and the maintenance speed is increased.

Specifically, the metal wire 5 is a copper wire, and different wire diameters and wire numbers can be adopted according to the type and the size of the transmitted current signal. More specifically, in order to match the change of the number of the wires, the number of the cavities 101 and the number of the metal elastic pieces 3 of the insulating housing 1 need to be set to be the same as the number of the wires, so as to ensure that the metal wires 5, the metal elastic pieces 3 and the cavities 101 are in one-to-one correspondence, and avoid the short circuit phenomenon between the currents. More specifically, the cavities 101 may be disposed in a linear array, a rectangular array, or a circular array inside the insulating housing 1, which is not described in the present application in a limiting manner. In the present embodiment, the cavities 101 are arranged in a linear array, and since there are six metal wires 5, there are six metal domes 3 and six cavities 101.

Specifically, the metal dome 3 is made of phosphor copper, and other conductive metals, such as brass and iron, may be used instead. In order to prevent the surface of the metal dome 3 from being oxidized and affecting the electrical conduction, the surface thereof may be plated with gold. The insulating shell 1 is made of plastic, is molded by an injection molding process by utilizing the non-conducting characteristic of the plastic, and is suitable for mass production.

As a preferable solution of the above embodiment, the first conductive end 302 is a first concave structure, and the bottom of the first concave structure is attached to the conductive portion 401 of the PCB 4; the second conductive terminal 303 is a second concave structure, and the inside of the second concave structure is used for embedding the metal wire 5. With this configuration, the metal wire 5 is embedded in the second conductive end 303, so as to ensure a stable connection between the metal dome 3 and the metal wire 5.

Further, a protruding portion 304 is disposed at the bottom of the first concave structure, and the protruding portion 304 is fit with the conductive portion 401. So arranged, because in actual operation the communication between electricity and electricity only needs to be realized by the contact between the point and the electric contact. Therefore, the bottom of the first concave structure is provided with a protruding portion 304, and the protruding portion 304 is fit with the conductive portion 401 to ensure the communication of the current.

As a preferable aspect of the above embodiment, the elastic sheet main body 301 has any one of a U-shaped structure, a V-shaped structure, and an S-shaped structure. With such an arrangement, when the first conductive end 302 is attached to the conductive portion 401, and the first conductive end 302 moves in the opposite direction of the conductive portion 401 due to the reaction force between the first conductive end 302 and the conductive portion 401, the U-shaped structure, the V-shaped structure or the S-shaped structure spring main body 301 can apply the reaction force towards the conductive portion 401 to the first conductive end 302 due to the compression, so as to ensure that the first conductive end 302 is always attached to and contacted with the conductive portion 401, and the structure is simple and practical. In this embodiment, the elastic sheet main body 301 has a U-shaped structure. In addition, after understanding the design motivation of the structure of the dome body 301, those skilled in the art may conceive of other structures of the dome body 301 without creative work, and shall also fall within the protection scope of the present application.

As a preferable aspect of the above embodiment, the first concave structure is a V-shaped structure, and/or the second concave structure is a U-shaped structure. The specific operations of electrically connecting the second conductive terminal 303 and the metal wire 5 are as follows: the metal wire 5 is first placed inside the U-shaped structure of the second conductive end 303, and then the two open ends of the U-shaped structure are bent inward, and the metal wire 5 is pressed and fixed inside the U-shaped structure by the two open ends. So set up to ensure that metal wire 5 can not drop from second electrically conductive end 303 in the current signal transmission process, ensure current signal's effective transmission, simple structure practicality is strong.

As a preferable scheme of the above embodiment, one side of the elastic sheet main body 301 connected to the second conductive end 303 is provided with a folded edge pair 305, and two folded edges of the folded edge pair 305 are arranged oppositely; the insulating housing 1 has a recess 102 therein, and when the metal dome 3 is embedded in the insulating housing 1, the pair of flanges 305 are embedded in the recess 102. So configured, on the one hand, the pair of flaps 305 provide a supporting point of force for the dome body 301 when the dome body 301 is compressed; on the other hand, when the metal dome 3 is placed in the cavity 101 of the insulating housing 1, the pair of flanges 305 can prevent the metal dome 3 from coming off the insulating housing 1, and fix the metal dome 3.

As a preferable scheme of the above embodiment, the insulating housing 1 is provided with a fastening portion 2 on a side contacting with the PCB 4, and the PCB 4 is provided with an assembling hole 402 adapted to the fastening portion 2. So set up, the mode of connecting through the lock realizes being connected dismantled between insulating housing 1 and the PCB board 4, and it is all very convenient no matter demolish and combine, and simple structure practicality is strong.

Specifically, the number of the buckling parts 2 is four, and the four buckling parts are respectively located at four corner positions of the surface, close to the PCB 4, of the insulating shell 1. So set up, all set up buckling parts 2 through locating at four corners to ensure the firmness after insulating casing 1 is connected with PCB board 4.

As a preferable scheme of the above embodiment, a positioning column 6 is disposed on one side of the insulating housing 1 contacting with the PCB 4, and the PCB 4 is provided with a positioning hole 403 adapted to the positioning column 6. So set up, in order to avoid taking place the aversion after insulating housing 1 and the assembly of PCB board 4, this embodiment sets up a plurality of reference columns 6 on insulating housing 1's the surface that is close to PCB board 4, and set up on PCB board 4 with the locating hole 403 of reference column 6 adaptation to take place the aversion after preventing insulating housing 1 and the assembly of PCB board 4.

The embodiment further discloses a metal dome, the dome main body 301, and a first conductive end 302 and a second conductive end 303 disposed at two ends of the dome main body 301, wherein the first conductive end 302 is a V-shaped structure for electrically connecting with the PCB 4, and/or the second conductive end 303 is a U-shaped structure for embedding the metal wire 5.

The specific structure of the metal dome 3 in the connector is specified by this embodiment, wherein the first conductive end 302 of the metal dome 3 is electrically contacted with the PCB 4, and the second conductive end 303 of the metal dome 3 is electrically connected with the metal wire 5, so as to realize the sequential electrical connection of the metal wire 5-the metal dome 3-the PCB 4, and ensure the effective transmission of the current signal. The metal dome 3 is made of phosphor copper, but other conductive metals, such as brass and iron, may be used instead. In order to prevent the surface of the metal dome 3 from being oxidized and affecting the electrical conduction, the surface thereof may be plated with gold.

The first conductive end 302 is designed to have a V-shaped structure, so as to be electrically connected to the conductive portion of the PCB. The second conductive end 303 is a U-shaped structure, and the specific operation of electrically connecting with the metal wire 5 is as follows: the metal lead 5 is first placed inside the U-shape of the U-shaped structure of the second conductive terminal 303, and then the U-shaped open end is bent toward the inside of the U-shape, and the metal lead 5 is pressed and fixed inside the U-shape by the U-shaped open end. So set up to ensure that metal wire 5 can not drop from second electrically conductive end 303 in the current signal transmission process, ensure current signal's effective transmission, simple structure practicality is strong.

The embodiment also discloses a PCB board connecting structure, referring to fig. 7-8, comprising a PCB board 4 and the connector, where the PCB board 4 is detachably connected to the connector.

Through this embodiment with PCB board 4 and connector regulation for can dismantling the connection, can be convenient for carry out quick replacement, improve maintenance speed to the connector through dismantling the connection.

Specifically, the surface of the PCB 4 facing the insulating housing 1 is provided with a plurality of conductive portions 401, and the conductive portions 401 are used for contacting with the first conductive ends 302 of the metal dome 3 to transmit current signals. The PCB 4 is further provided with a plurality of assembling holes 402 and positioning holes 403, the assembling holes 402 are used for being buckled with the buckling parts 2 on the insulating casing 1 to realize detachable buckling connection, and the positioning holes 403 are used for being matched with the positioning columns 6 on the insulating casing 1 to play a positioning role.

Wherein, be connected in order to realize dismantling between insulating housing 1 and the PCB board 4 and be connected through the lock of pilot hole 402 and buckling parts 2, it is all very convenient no matter demolish and combine, and simple structure practicality is strong. The positioning hole 403 is matched with the positioning column 6 to prevent the insulating housing 1 from being displaced after being assembled with the PCB 4.

It should be noted that other contents of the connector, the metal spring and the PCB board connection structure disclosed in the present invention are prior art and are not described herein again.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

Furthermore, it should be noted that the descriptions relating to "first", "second", etc. in the present invention are 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The above are only alternative embodiments of the present invention, and not intended to limit the scope of the present invention, and all the applications of the present invention in other related fields are included in the scope of the present invention.

Claims

1. A connector, comprising:

the insulating shell is internally provided with a cavity;

the metal elastic sheet is embedded in the cavity and comprises an elastic sheet main body, a first conductive end and a second conductive end, wherein the first conductive end and the second conductive end are arranged at two ends of the elastic sheet main body; when the insulating shell is connected with the PCB, the first conductive end protrudes out of the cavity and is in electrical contact with the PCB, and the second conductive end is used for being electrically connected with a metal wire.

2. The connector of claim 1, wherein: the first conductive end is of a first concave structure, and the bottom of the first concave structure is attached to the conductive part of the PCB; the second conductive end is of a second concave structure, and the metal wire is embedded in the second concave structure.

3. The connector of claim 2, wherein: and the bottom of the first concave structure is provided with a protruding part, and the protruding part is in fit with the conductive part.

4. The connector according to any one of claims 1 to 3, wherein: the shell fragment main part is any one of U font structure, V font structure and S font structure.

5. The connector according to any one of claims 1 to 3, wherein: the first concave structure is a V-shaped structure, and/or the second concave structure is a U-shaped structure.

6. The connector of claim 1, wherein: one side of the elastic sheet main body, which is connected with the second conductive end, is provided with a folded edge pair, and two folded edges of the folded edge pair are oppositely arranged; the inside of insulating housing is equipped with the depressed part, works as metal shell fragment inlay in when insulating housing, the hem pair inlay in the depressed part.

7. The connector of claim 1, wherein: one side of the insulating shell, which is in contact with the PCB, is provided with a buckling part, and the PCB is provided with an assembly hole matched with the buckling part.

8. The connector according to claim 1, wherein: one side of the insulating shell, which is in contact with the PCB, is provided with a positioning column, and the PCB is provided with a positioning hole matched with the positioning column.

9. A metal shrapnel is characterized in that: the PCB comprises a spring plate main body, a first conductive end and a second conductive end, wherein the first conductive end and the second conductive end are arranged at two ends of the spring plate main body, the first conductive end is of a V-shaped structure and is used for being electrically connected with the PCB, and/or the second conductive end is of a U-shaped structure and is used for being embedded into a metal wire.

10. The utility model provides a PCB board connection structure which characterized in that: comprising a PCB board and a connector according to any of claims 1-8, said PCB board being detachably connected to said connector.