CN219981125U

CN219981125U - Low-height cassette connector

Info

Publication number: CN219981125U
Application number: CN202320912222.5U
Authority: CN
Inventors: 郭敬杰; 邓兰平; 金利斌
Original assignee: Hongrida Technology Co ltd
Current assignee: Hongrida Technology Co ltd
Priority date: 2023-04-21
Filing date: 2023-04-21
Publication date: 2023-11-07
Anticipated expiration: 2033-04-21

Abstract

The utility model belongs to the technical field of conductive connection, and relates to a low-height card seat connector which comprises a PCB, a lower terminal assembly arranged on the front surface of the PCB and an upper terminal assembly arranged above the lower terminal assembly, wherein the lower terminal assembly is provided with a plurality of lower terminals and lower plastic coated outside the lower terminals, the lower terminals are provided with lower welding feet exposed from the lower part of the lower plastic, the upper part of the PCB is provided with a concave area with a concave depth not smaller than the thickness of the lower plastic, and a plurality of lower welding pads in conductive connection with the lower welding feet are arranged in the range of the concave area. The concave area is arranged above the PCB, so that most of the lower terminal assembly is buried in the concave area, the height on the board is reduced under the condition that the plugging height is unchanged, and then the overall height of the card connector is reduced, so that the card connector is more suitable for a mobile phone model with thinner thickness.

Description

Low-height cassette connector

Technical Field

The utility model relates to the technical field of conductive connection, in particular to a low-height card holder connector.

Background

The card seat connector is a conductive connecting component which is arranged in the mobile phone and is matched with the card seat to mount the SIM card. The card holder connector generally comprises a PCB board, a lower terminal assembly and an upper terminal assembly, wherein a space for inserting the SIM card is arranged between the lower terminal assembly and the upper terminal assembly, the lower terminal assembly and the upper terminal assembly are respectively formed by embedding terminals into plastic layers, and the terminals on two sides are in conductive connection with different bonding pads on the PCB board for carrying out information exchange with a circuit on the SIM card.

In many card-holder connectors on the market, the lower terminal assembly is disposed on the upper surface of the PCB, for example, in a SIM card-holder connector disclosed in chinese patent CN 217444747U, the thickness of the portion of the mobile phone where the SIM card is mounted is not smaller than the sum of the thickness of the two sides of the mobile phone, the thickness of the PCB, the thickness of the lower terminal assembly, the thickness of the SIM card and the thickness of the upper terminal assembly. For some mobile phones, the reduced thickness can meet the requirements of customers seeking to make the mobile phones lighter and thinner.

There is a need for a cartridge connector structure that addresses the above issues.

Disclosure of Invention

The main object of the present utility model is to provide a low-height card connector, which can reduce the total height of the card connector, so that the card connector is suitable for thinner mobile phone models.

The utility model realizes the aim through the following technical scheme: the utility model provides a low-height cassette connector, includes the PCB board, locates the positive lower terminal subassembly of PCB board and be located the upper terminal subassembly of lower terminal subassembly top, lower terminal subassembly have a plurality of lower floor's terminals with the cladding in the lower floor's plastic outside the lower floor's terminal, lower floor's terminal has the follow lower leg that lower floor's plastic lower part exposes, the upper portion of PCB board has the recess degree of depth not less than lower floor's plastic thickness, be equipped with a plurality of with lower bonding pads of lower leg conductive connection in the scope of recess.

Specifically, the material thickness of the concave area is 0.25-0.4mm.

Further, the concave depth of the concave area is 40-60% of the thickness of the PCB.

Specifically, lower layer terminal has the lower shell fragment that exceeds lower layer plastic upper portion, go up the terminal subassembly include a plurality of upper terminals and cladding in the upper plastic of upper terminal outside, upper terminal have lower a plurality of upper shrapnel and a plurality of upper soldering leg of upper plastic lower part, upper shrapnel with lower shell fragment position is relative, the PCB board be in the scope of depressed area is equipped with upper soldering leg conductive connection's upper bonding pad.

Further, the upper terminal assembly further comprises an iron shell straddling above the concave area, wherein cladding connection is formed between the iron shell and the upper plastic, and the iron shell is connected with the PCB and the connection position is located outside the range of the concave area.

The technical scheme of the utility model has the beneficial effects that:

the concave area is arranged above the PCB, so that most of the lower terminal assembly is buried in the concave area, the height on the board is reduced under the condition that the plugging height is unchanged, and then the overall height of the card connector is reduced, so that the card connector is more suitable for a mobile phone model with thinner thickness.

Drawings

FIG. 1 is a perspective view of an embodiment cartridge connector;

fig. 2 is a perspective view of the upper terminal assembly;

fig. 3 is a perspective view of a PCB board;

fig. 4 is a perspective view of the lower terminal assembly;

fig. 5 is a schematic cross-sectional view of a card connector.

The figures represent the numbers:

1-a PCB, 11-a concave area, 12-a lower bonding pad and 13-an upper bonding pad;

2-lower terminal components, 21-lower terminals, 211-lower welding pins, 212-lower shrapnel and 22-lower plastic;

3-upper terminal assembly, 31-upper terminal, 311-upper welding leg, 312-upper spring piece, 32-upper plastic and 33-iron shell.

Detailed Description

The present utility model will be described in further detail with reference to specific examples.

Examples:

as shown in fig. 1 to 3, the low-height card connector of the present utility model comprises a PCB board 1, a lower terminal assembly 2 disposed on the front surface of the PCB board 1, and an upper terminal assembly 3 disposed above the lower terminal assembly 2, wherein the lower terminal assembly 2 has a plurality of lower terminals 21 and a lower plastic 22 covering the lower terminals 21, the lower terminals 21 have lower solder feet 211 exposed from the lower portion of the lower plastic 22, the upper portion of the PCB board 1 has a concave region 11 with a concave depth not smaller than the thickness of the lower plastic 22, and a plurality of lower pads 12 electrically connected with the lower solder feet 211 are disposed in the range of the concave region 11. The lower layer terminals 21 are typically six arranged in a 3×2 configuration. The concave area 11 is arranged above the PCB 1, so that most of the lower terminal assembly 2 is buried in the concave area 11, the height on the board is reduced under the condition of unchanged plugging height, and the overall height of the card connector is reduced, so that the card connector is more suitable for mobile phone models with thinner thickness.

The material thickness of the recessed area 11 is 0.25-0.4mm. Because the lower pad 12 is disposed in the recess 11, which means that there is room for the material under the recess 11 to be disposed with copper wires connected to the lower pad 12, the material under the recess 11 cannot be too thin, otherwise the strength of the recess 11 is not easily broken under the reaction force of the SIM card to cause a breaking problem.

As shown in fig. 5, the concave depth of the concave region 11 is 40-60% of the thickness of the PCB board 1. Too great a depth of the recess 11 causes strength problems, and too small a depth does not necessarily accommodate the underlying plastic 22, and therefore is required to be in a suitable thickness ratio range.

As shown in fig. 2, 3 and 5, the lower terminal 21 has a lower spring 212 higher than the upper part of the lower plastic 22, the upper terminal assembly 3 includes an upper terminal 31 and an upper plastic 32 covering the upper terminals 31, the upper terminal 31 has a plurality of upper spring 312 lower than the lower part of the upper plastic 32 and a plurality of upper solder feet 311, the upper spring 312 is opposite to the lower spring 212, and the PCB board 1 is provided with an upper bonding pad 13 electrically connected with the upper solder feet 311 outside the range of the recess 11. The conductive connection of the upper terminal 31 and the PCB board 1 is the same as the conductive connection principle of the lower terminal 21 and the PCB board 1, except for the difference in positions. The upper spring plate 312 and the lower spring plate 212 are elastic, and generate opposite clamping force due to elastic deformation after the SIM card is inserted, and ensure conductive connection.

As shown in fig. 4 and 5, the upper terminal assembly 3 further includes an iron shell 33 straddling over the recessed area 11, wherein a cladding connection is formed between the iron shell 33 and the upper plastic 32, the iron shell 33 is connected with the PCB board 1, and the connection position is located outside the range of the recessed area 11. The iron shell 33 is generally a metal stamping bending piece, so that the iron shell 33 and the upper terminal 31 can be simultaneously coated and connected by the upper plastic 32 during embedding and forming, the manufacturing is faster, and the overall structure is more stable. It is apparent that the thickness of the part of the PCB board 1 outside the extent of the recess 11 is thicker than in the extent of the recess 11, where it is used for connection with the iron shell 33, the connection stability is more reliable.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims

1. A low height cartridge connector, characterized by: including the PCB board, locate the positive lower terminal subassembly of PCB board and be located the upper terminal subassembly of lower terminal subassembly top, lower terminal subassembly have a plurality of lower floor's terminals with cladding in the outer lower floor's plastic of lower floor's terminal, lower floor's terminal have follow lower leg that lower floor's plastic lower part exposes, the upper portion of PCB board has the indent degree of depth not less than lower floor's plastic thickness's depressed area, be equipped with a plurality of with lower bonding pad of lower leg conductive connection in the scope of depressed area.

2. The low height cartridge connector of claim 1, wherein: the material thickness of the concave area is 0.25-0.4mm.

3. The low height cartridge connector of claim 2, wherein: the concave depth of the concave area is 40-60% of the thickness of the PCB.

4. The low height cartridge connector of claim 1, wherein: the lower layer terminal has the lower shell fragment that exceeds lower layer plastic upper portion, go up the terminal subassembly include a plurality of upper terminals and cladding in the upper plastic outside the upper terminal, upper terminal have lower go up shell fragment and a plurality of upper soldering leg of upper plastic lower part, go up the shell fragment with lower shell fragment position is relative, the PCB board be in the scope of depressed area is equipped with upper soldering leg conductive connection's upper bonding pad.

5. The low height cartridge connector of claim 4, wherein: the upper terminal assembly further comprises an iron shell which is straddled above the concave area, cladding connection is formed between the iron shell and the upper plastic, and the iron shell is connected with the PCB and the connection position is located outside the range of the concave area.