CN113540851B

CN113540851B - Terminal, terminal assembly and electric connector

Info

Publication number: CN113540851B
Application number: CN202110784502.8A
Authority: CN
Inventors: 陈伟; 张佳华; 葛林忠
Original assignee: Kunshan Jiahua Electronics Co Ltd
Current assignee: Kunshan Jiahua Electronics Co Ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2023-08-29
Anticipated expiration: 2041-07-12
Also published as: CN113540851A

Abstract

The utility model discloses a terminal, a terminal assembly and an electric connector, wherein the terminal comprises a substrate part, two upright walls formed by upwards extending two sides of the substrate part and an elastic arm formed by reversely bending one end of the substrate part, one end of the elastic arm is provided with a contact part corresponding to a butt joint element, at least part of the elastic arm is opposite to the substrate part along the up-down direction and is arranged at intervals, the two upright walls are opposite to each other along the left-right direction perpendicular to the up-down direction and are arranged at intervals, the elastic arm is positioned between the two upright walls along the left-right direction, the elastic arm can elastically deform along the up-down direction, the upright walls extend to form a plurality of butt joint feet corresponding to the contact with the butt joint substrate, the substrate part is positioned below the butt joint feet along the up-down direction, and the contact part is positioned above the butt joint feet, so that the miniaturization design is facilitated.

Description

Terminal, terminal assembly and electric connector

Technical Field

The present utility model relates to terminals, terminal assemblies, and electrical connectors, and more particularly to terminals, terminal assemblies, and electrical connectors for mating with mating connectors.

Background

In the prior art, please refer to chinese patent No. CN201966366U, the patent discloses an electrical connector, which includes a shielding housing, a third terminal module integrally formed on an inner surface of a top plate of the shielding housing, a first terminal module, and a second terminal module. The shielding shell combined with the third terminal module is arranged on the butt joint substrate and forms an accommodating space with the butt joint substrate, the accommodating space is used for inserting or extracting a card support module bearing an electronic card, and the first terminal module and the second terminal module are attached to the surface of the butt joint substrate and are positioned under the shielding shell.

The first terminal module, the second terminal module and the third terminal module all comprise an insulating body and a plurality of conductive terminals which are combined in the insulating body through integral injection molding, and each conductive terminal comprises a terminal fixing section embedded in the insulating body, a spring arm-shaped contact section protruding into the accommodating space and a butt joint part protruding out of the insulating body and corresponding to the butt joint substrate in electric contact.

After the card support modules with the electronic cards on the upper and lower surfaces are inserted into the accommodating space, the card support modules are correspondingly in electrical contact with the first terminal module, the second terminal module and the third terminal module to realize signal transmission. Such electronic card connectors are commonly referred to as stacked electronic card connectors or dual layer card connectors. However, the overall thickness of the card connector is thicker due to the stacked structure of the card connector, which is contrary to the current design development route of light weight and miniaturization. Cannot be applied to some electronic products (such as smart mobile phones and the like) with thinner thickness dimensions.

Therefore, it is necessary to design a new terminal, terminal assembly and electrical connector to remedy the above-mentioned drawbacks of the prior art.

Disclosure of Invention

The utility model aims to provide a novel terminal, a terminal assembly and an electric connector, which are beneficial to miniaturization design.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a terminal, includes base plate portion, by the both sides of base plate portion upwards extend two upright walls that form and by the elastic arm that the one end reverse bending formed of base plate portion, elastic arm one end forms the contact portion that corresponds with the butt joint component contact, at least part along upper and lower direction and base plate portion are relative and the interval setting, two upright walls are along the left and right direction opposite and the interval setting of perpendicular to upper and lower direction, the elastic arm is followed left and right direction is located between two upright walls, the elastic arm can follow upper and lower direction elastic deformation, upright wall extends and forms a plurality of butt joints that correspond with butt joint base plate contact, along upper and lower direction, base plate portion is located the below of butt joint foot, contact portion is located the top of butt joint foot.

Further, at least one of the docking portions is formed on each of the upright walls.

Further, the abutment portions on the two upright walls extend in opposite directions along the left-right direction.

Further, a limiting part is formed on the vertical wall in an extending mode, and the limiting part is located above the elastic arm in the vertical direction and has a limiting effect on the elastic arm.

Further, the elastic arm comprises a bending transition section connected with the base plate part, a flat plate section which is spaced from and opposite to the base plate part, an elevated section formed by extending one end of the flat plate section towards the side far away from the base plate part, and the contact part formed by extending one end of the elevated section, wherein the limiting part is positioned above the end of the flat plate section close to the elevated section.

Further, at least one limiting portion is formed on each vertical wall, the limiting portions on the two vertical walls extend towards each other along the left-right direction, one end of each limiting portion further extends to form a wing portion, and one end of each wing portion extends to the side where the elevated section is located.

In order to achieve the above purpose, the present utility model further provides the following technical solutions:

the terminal assembly comprises any one of the terminals and further comprises a butt joint substrate, wherein the butt joint substrate is provided with an upper surface and a lower surface, a through hole is formed in the butt joint substrate in a penetrating mode, the butt joint pin part is electrically connected to the lower surface of the butt joint substrate, and the elastic arm penetrates through the through hole and at least part of the contact part protrudes above the upper surface.

Further, two butt joint feet are formed on each vertical wall in an extending mode, the butt joint feet on the two vertical walls are in one-to-one correspondence along the left-right direction, and at least one pair of butt joint feet on the two vertical walls, which correspond to each other along the left-right direction, are located on two sides of the through hole.

the electric connector comprises the terminal assembly and further comprises the housing module, wherein the housing module comprises a metal housing, the metal housing comprises a top plate, side plates formed by downward extension of two sides of the top plate and fixing feet formed by further extension of the side plates, the metal housing is correspondingly covered on the upper surface of the butt joint substrate, the fixing feet are correspondingly fixed with the butt joint substrate, the metal housing jointly defines a plug space for the insertion of the butt joint module in the butt joint substrate, and the contact part of the terminal at least partially protrudes into the plug space.

Further, the connector further comprises an upper terminal module, the upper terminal module comprises an insulating body and a plurality of signal terminal pieces combined with the insulating body, the upper terminal module is combined with the inner surface of the top plate, the plug space is formed between the upper terminal module and the butt joint substrate, and the signal terminal pieces are provided with terminal contact parts protruding downwards into the plug space. .

Compared with the prior art, the utility model has the beneficial effects that: is beneficial to miniaturization design.

Drawings

Fig. 1 is a perspective view of a first embodiment of the electrical connector of the present utility model.

Fig. 2 is a schematic perspective view of fig. 1 from another angle.

Fig. 3 is an exploded perspective view of the electrical connector of fig. 1, particularly showing the metal shell, the card holder module, and the terminal assembly incorporating the upper terminal module.

Fig. 4 is a bottom view of the electrical connector of fig. 1.

Fig. 5 is a cross-sectional view taken along line A-A of fig. 4.

Fig. 6 is an enlarged view of the structure within the dashed box in fig. 5.

Fig. 7 is a schematic perspective view of a first embodiment of the terminal of the present utility model.

Fig. 8 is an exploded perspective view of a second embodiment of the electrical connector of the present utility model.

Fig. 9 is a schematic perspective view of a second embodiment of the terminal of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 7, a first embodiment of an electrical connector according to the present disclosure includes a terminal assembly 10, a housing module 6 and a card holder module 8 that are mated with the terminal assembly 10. The terminal assembly 10 includes a mating substrate 5 and a plurality of terminals 1 bonded to the mating substrate 5. The housing module 6 includes a metal housing 61 made of a metal plate and an upper terminal module 62 coupled to the metal housing 61. Specifically, the metal shell 61 includes a flat plate-shaped top plate 611, side plates 612 formed by extending downward from both sides of the top plate 611, an end plate 614 formed by extending downward from one end of the top plate 611, and a plurality of fixing legs 613 formed by further extending the side plates 612 and the end plate 614. The card holder module 8 is used for carrying an electronic card (not shown).

Referring to fig. 1 to 3, the upper terminal module 62 includes an insulating body 621 and a plurality of signal terminal pieces 622 combined with the insulating body 621. The upper terminal module 62 is integrally coupled to the inner surface of the top plate 611 by injection molding. The docking substrate 5 defines an upper surface 501 and a lower surface 502, the metal casing 61 is correspondingly covered on the upper surface 501 of the docking substrate 5, the fixing leg 613 is correspondingly fixed with the docking substrate 5, the metal casing 61 and the docking substrate 5 together define a plugging space 60 (specifically, the plugging space 60 is formed between the upper terminal module 62 and the docking substrate 5) into which a docking module (referred to as a card holder module 8 in the present utility model) is plugged. The signal terminal 622 is formed with a terminal contact portion (not shown) protruding downward into the insertion/extraction space 60.

The two embodiments of the present utility model shown in the drawings are stacked electrical connectors (i.e., the upper and lower surfaces of the card holder module 8 each carry an electronic card). In other embodiments, the housing module 6 may also include only the metal housing 61 without the upper terminal module 62, and the metal housing 61 is directly combined with the mating substrate 5 and matched with the plurality of terminals 1 to form the whole electrical connector (i.e. a single-layer electrical connector matched with a single-layer electronic card).

Referring to fig. 2 to 7, the terminal 1 includes a base plate 11, two upright walls 12 extending upward from two sides of the base plate 11, and an elastic arm 13 bent reversely from one end of the base plate 11. One end of the elastic arm 13 forms a contact portion 114 corresponding to contact with a docking element (namely, an electronic card loaded in the card holder module 8 and inserted into the insertion and extraction space 60). At least part of the elastic arm 13 is disposed opposite to and spaced apart from the base plate 11 in the up-down direction (i.e., the thickness direction of the butt-joint base plate 5). The two upright walls 12 are opposed to each other in the left-right direction perpendicular to the up-down direction and are arranged at intervals. The elastic arm 13 is located between the two upright walls 12 in the left-right direction, and the elastic arm 13 is elastically deformable in the up-down direction.

Wherein each of the upright walls 12 extends to form two corresponding docking feet 121 which are in contact with the docking substrate 5. The docking portions 121 on the two upright walls 12 are extended in opposite directions in the left-right direction. In the vertical direction, the substrate 11 is located below the docking portion 121, and the contact portion 114 is located above the docking portion 121. Each of the upright walls 12 further extends between the two docking portions 121 to form a limiting portion 122. The limiting portions 122 on the two upright walls 12 are in one-to-one correspondence along the left-right direction and extend in opposite directions. The limiting part 122 is located above the elastic arm 13 in the vertical direction and has a limiting effect on the elastic arm 13. The limiting portion 122 and the docking portion 121 extend in substantially the same plane. In the present utility model, a pair of the docking portions 121 corresponding to each other in the left-right direction on the two upright walls 12 are located on both sides of the through hole 51.

Referring to fig. 2 to 6, the docking substrate 5 is formed with a through hole 51 therethrough, the docking portion 121 of the terminal 1 is electrically connected to the lower surface 502 of the docking substrate 5, the elastic arm 13 passes through the through hole 51 and the contact portion 114 protrudes above the upper surface 501 (protrudes into the plugging space 60). So that the terminals 1 are formed on the butt-joint substrate 5 in a sinking plate type combination mode.

In the present utility model, the limiting portion 122 is provided to have a certain pre-pressing action on the elastic arm 13, so as to increase the positive pressure of the contact portion 114 of the terminal 1. It is also important to precisely control the height of the contact 114 during the process so that the contact 114 of the plurality of terminals 1 has the same or similar contact height. In addition, the spring arm 13 of the terminal can be prevented from being bent backward (particularly, the contact portion 114). Further, the terminal group formed of the plurality of terminals 1 is not fixed in a structure requiring a similar insulating body. The height of the electric connector above the upper surface 501 of the butting substrate 5 can be sufficiently reduced, and the whole structure of the electric connector is simpler. Further, by fully utilizing the thickness of the circuit board 5, the elastic arms 13 of the terminal 1 can be made to have a sufficient elastic deformation space in the up-down direction, and thus the risk of yielding due to plastic deformation of the elastic arms 13 can be prevented. Giving more space and possibilities to the structural design of the terminal 1. In some use cases, the extra space under the lower surface 502 of the circuit substrate 5 can also be fully utilized.

Referring to fig. 7, the elastic arm 13 includes a bent transition section 111 connected to the base plate 11 (in the present utility model, the bent transition section 111 is substantially C-shaped), a flat plate section 112 spaced apart from and opposite to the base plate 11, an elevated section 113 formed by extending one end of the flat plate section 112 toward a side away from the base plate 11, and the contact portion 114 formed by extending one end of the elevated section 113, and the limiting portion 122 is located above an end of the flat plate section 112 adjacent to the elevated section 113.

In the present utility model, fig. 1 to 7 are a first embodiment of the electrical connector of the present utility model, in which a plurality of terminals 1 are arranged on a circuit substrate 5 to form two terminal modules, each of which is matched with one Nano Sim card. Fig. 8 shows a second embodiment of the electrical connector according to the present utility model, in which a plurality of terminals 1 are arranged on a circuit substrate 5 to form a terminal module, and the terminal module is matched with a Nano Sim card. Wherein fig. 7 is a first embodiment of the terminal 1 of the present utility model. Fig. 9 shows a second embodiment of the terminal 1 according to the present utility model, in which one end of each of the stopper portions 122 of the terminal 1 is further extended to form a wing 1221, and the wing 1221 extends from one end of the stopper portion 122 toward the side of the elevated portion 113. The provision of the wing 1221 enables more accurate positioning of the elastic arms 13 of the terminal 1.

In the present utility model, the contact portion 114 of the terminal 1 is shaped like a spoon with a middle portion arched upward, and the periphery of the contact portion 114 is lower than the upper surface 501 of the mating substrate 5 in the up-down direction, so as to realize the anti-pin function. Of course, the electrical connector of the present utility model further includes a card ejecting mechanism and a switch terminal assembly, and the card ejecting mechanism and the switch terminal assembly are all of the prior art and are not described herein.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An electrical connector, comprising:

the terminal assembly is provided with a terminal and a butt joint substrate matched with the terminal;

the terminal comprises a substrate part, two vertical walls formed by upward extension of two sides of the substrate part and an elastic arm formed by reversely bending one end of the substrate part, wherein one end of the elastic arm forms a contact part corresponding to the contact with a butt joint element, at least part of the elastic arm is opposite to the substrate part along the up-down direction and is arranged at intervals, the two vertical walls are opposite to each other along the left-right direction perpendicular to the up-down direction and are arranged at intervals, the elastic arm is positioned between the two vertical walls along the left-right direction, and the elastic arm can elastically deform along the up-down direction, and the terminal is characterized in that: the upright wall extends to form a plurality of butt joint foot parts, and the substrate part, part of the elastic arm and the butt joint foot parts are all positioned below the butt joint substrate along the up-down direction;

the butt joint base plate is provided with a through hole in a penetrating mode and is provided with an upper surface and a lower surface which are opposite in definition, the butt joint pin part is electrically connected to the lower surface of the butt joint base plate, the elastic arm penetrates through the through hole, and the contact part at least partially protrudes above the upper surface;

the housing module and the butt joint substrate jointly define a plug space for the butt joint module to be inserted, and the contact part of the terminal at least partially protrudes into the plug space.

2. The electrical connector of claim 1, wherein: at least one of the docking portions is formed on each of the upstanding walls.

3. The electrical connector of claim 2, wherein: the abutment portions on the two upright walls extend in opposite directions along the left-right direction.

4. The electrical connector of claim 1, wherein: and the vertical wall is also extended to form a limiting part, and the limiting part is positioned above the elastic arm and has a limiting effect on the elastic arm along the up-down direction.

5. The electrical connector of claim 4, wherein: the elastic arm comprises a bending transition section connected with the base plate part, a flat plate section which is spaced from and opposite to the base plate part, an elevated section formed by extending one end of the flat plate section towards the side far away from the base plate part, and a contact part formed by extending one end of the elevated section, wherein the limiting part is positioned above the end of the flat plate section close to the elevated section.

6. The electrical connector of claim 5, wherein: each upright wall is provided with at least one limiting part, the limiting parts on the two upright walls extend oppositely along the left-right direction, one end of each limiting part also extends to form a wing part, and one end of each wing part extends to the side where the elevated section is located to form the wing part.

7. The electrical connector of claim 1, wherein: two butt joint feet are formed on each vertical wall in an extending mode, the butt joint feet on the two vertical walls correspond to each other in the left-right direction, and at least one pair of butt joint feet on the two vertical walls, which correspond to each other in the left-right direction, are located on two sides of the through hole.

8. The electrical connector of any one of claims 1 to 7, wherein: the housing module comprises a metal housing, wherein the metal housing comprises a top plate, side plates formed by downward extension of two sides of the top plate and fixed feet formed by further extension of the side plates, the metal housing is correspondingly covered on the upper surface of the butt joint substrate, the fixed feet are correspondingly fixed with the butt joint substrate, and the metal housing and the butt joint substrate jointly define the plug space.

9. The electrical connector of claim 8, wherein: the upper terminal module comprises an insulating body and a plurality of signal terminal pieces combined with the insulating body, the upper terminal module is combined with the inner surface of the top plate, the plug space is formed between the upper terminal module and the butt joint substrate, and the signal terminal pieces are provided with terminal contact parts protruding downwards into the plug space.