All-in-one card holder

Abstract

The present invention discloses an all-in-one card holder, which includes an upper shell component and a lower shell component that are interlocked together, the upper shell component includes an upper metal shell and an upper terminal module arranged on the upper metal shell, and the lower shell component includes a lower metal shell and a lower terminal module arranged on the lower metal shell. When the all-in-one card holder is installed on the circuit board, the portion of the upper metal shell that extends backward beyond the lower metal shell is located above the circuit board to install electronic components on the circuit board, and at least a portion of the structure of the lower shell component is installed in a notch of the circuit board in a sunken plate manner, thereby reducing the stacking thickness of the all-in-one card holder and the circuit board, thereby helping the electronic device on which the all-in-one card holder is installed to be an ultra-thin model.

Description

Technical Field

[0001] The invention relates to a card socket for plugging an electronic card, in particular to an all-in-one card socket. Background Art

[0002] With the continuous development of smart phones, people pay more attention to the thickness of mobile phones, so this first requires that the PCB and other components be stacked in smaller sizes and thinner thicknesses. As an indispensable component for mobile phone stacking, the card holder plays a decisive role in the layout of the entire stack. There are mainly two forms of card holders in mobile phone stacking:

[0003] 1. The SIM card holder and TF card holder are set separately. The card holder needs to occupy more area of ​​PCB, which affects the battery capacity. The large size of PCB directly affects the cost.

[0004] 2. The all-in-one card holder is currently used by most mobile phones. It is convenient for display and can shorten the length of the PCB board. However, the card holder of this solution is relatively high, resulting in a thicker PCB stacking thickness, making it impossible to make ultra-thin models.

[0005] Therefore, it is necessary to design a new all-in-one card holder to solve the above-mentioned technical problems. Summary of the invention

[0006] The object of the present invention is to provide a low-profile all-in-one card holder that can be selected and set according to customer needs.

[0007] To achieve the aforementioned objectives, the present invention adopts the following technical solutions: an all-in-one card holder, used for installation on a circuit board, comprising an upper shell assembly and a lower shell assembly that are interlocked together, the upper shell assembly comprising an upper metal shell and an upper terminal module arranged on the upper metal shell, the upper metal shell is provided with an upper card slot and a rear card slot that is connected to the upper card slot from front to back, when the all-in-one card holder is installed on the circuit board, the rear card slot is located above the circuit board, the upper terminal module comprises an upper insulator and an upper terminal group arranged on the upper insulator, the upper terminal group is provided with an upper contact portion located in the upper card slot and an upper welding foot extending from the upper insulator, and in the insertion direction, the length of the lower shell assembly The length of the lower shell component is smaller than that of the upper shell component, the lower shell component includes a lower metal shell and a lower terminal module arranged on the lower metal shell, the lower metal shell is provided with a lower card slot located below the upper card slot, the lower terminal module includes a lower insulator and a lower terminal group arranged on the lower insulator, the lower terminal group is provided with a lower contact portion located in the lower card slot and a lower welding foot extending from the lower insulator, when the multi-in-one card holder is installed on the circuit board, at least part of the structure of the lower shell component is installed in the notch of the circuit board in a sunken plate manner, and the portion of the upper metal shell exceeding the lower metal shell is located above the circuit board, so that the electronic components can be installed on the circuit board in the rear card slot.

[0008] A further improvement is that the electronic component is a rear terminal module, which is disconnected from the upper shell assembly, and includes a rear insulator and a rear terminal group arranged on the rear insulator, and the rear terminal group has a rear contact portion located in the rear slot and a rear welding foot extending out of the rear insulator.

[0009] As a further improvement, the upper terminal group includes an upper holding portion connecting the upper contact portion and the upper welding leg, and the upper holding portion is fixed in the upper insulator; the lower terminal group includes a lower holding portion connecting the lower contact portion and the lower welding leg, and the lower holding portion is fixed in the lower insulator; the rear terminal group includes a rear holding portion connecting the rear contact portion and the rear welding leg, and the rear holding portion is fixed in the rear insulator, and in the vertical direction perpendicular to the front-to-back direction, the rear holding portion is higher than the lower holding portion, but lower than the upper holding portion.

[0010] A further improvement also includes a card ejection mechanism installed on the upper metal shell, the card ejection mechanism includes a push rod and a crank, the push rod is slidably arranged on the upper metal shell along the front-to-back direction, the crank is rotatably arranged on the upper metal shell, and the crank includes a pushing part protruding forward into the rear card slot and a driving part cooperating with the push rod.

[0011] As a further improvement, the upper welding foot extends laterally out of the upper insulator in the left-right direction for welding to the upper surface of the circuit board.

[0012] As a further improvement, the lower welding leg extends backward out of the lower insulator for welding to the upper surface of the circuit board.

[0013] A further improvement is that the upper metal shell includes a top wall and upper side walls bent downward from the left and right ends of the top wall, the upper slot is located between the top wall and the upper side walls, the lower metal shell includes a bottom wall opposite to the top wall, a lower side wall extending upward from the left and right ends of the bottom wall for being located in the notch of the circuit board, and a lower mounting foot bent outward from the upper end of the lower side wall for supporting the upper surface of the circuit board, and the lower slot is located between the bottom wall and the lower side wall.

[0014] As a further improvement, the lower metal shell also includes a retaining plate, which includes a horizontal portion extending outward from the lower end of the lower side wall and an upright portion extending upward from the outer end of the horizontal portion, and a retaining hole and a spring sheet that are retainingly connected to each other are provided between the upright portion and the upper side wall.

[0015] As a further improvement, the lower metal shell is also provided with an additional mounting foot extending vertically downward, and the additional mounting foot is vertically connected to the upper end of the lower side wall through a supporting plate. When the multi-in-one card holder is installed on the circuit board, the supporting portion is downwardly supported on the upper surface of the circuit board, and the additional mounting foot is downwardly installed in the mounting hole of the circuit board.

[0016] As a further improvement, the upper metal shell also includes an upper mounting foot extending vertically downward from the upper side wall for mounting in the mounting hole of the circuit board.

[0017] A further improvement is that the upper shell assembly also includes a switch module, which includes a moving terminal, a static terminal and an insulating block. The moving terminal is integrally connected to the upper metal shell, and the moving terminal is provided with an elastic arm protruding forward into the rear slot and an abutment portion provided at the end of the elastic arm. The static terminal is provided on the insulating block, and the static terminal is provided with a lap portion that contacts or disconnects from the abutment portion. The insulating block is provided on the upper metal shell.

[0018] As a further improvement, the upper terminal group and the rear terminal group are configured as Nano terminals for electrically contacting a Nano SIM card; and the lower terminal group is configured as a TF terminal for electrically contacting a TF card.

[0019] A further improvement also includes a card tray plugged into the upper card slot, the lower card slot and the rear card slot, the card tray having an upper slot for loading a first electronic card, a lower slot for a second electronic card and a rear slot for a third electronic card, and the upper card slot and the lower slot are arranged correspondingly up and down.

[0020] The upper shell component of the multi-in-one card holder of the present invention is longer than the lower shell component and forms an integral structure, so that when the multi-in-one card holder is installed on the circuit board, the required electronic components can be installed on the lower side of the upper shell component according to customer needs. Compared with the prior art, it is not necessary to provide different multi-in-one card holders according to different customer needs, so as to reduce manufacturing costs and energy loss. In addition, the card slot and the lower card slot are stacked, so that the electronic cards inserted into the upper card slot and the lower card slot can be stacked up and down, which is conducive to reducing the length of the multi-in-one card holder in the front-to-back direction, reducing the space in the front-to-back direction of the circuit board, and shortening the board length; at least part of the structure of the lower shell component is installed in the notch of the circuit board in a sunken plate manner, which reduces the stacking thickness of the multi-in-one card holder and the circuit board, thereby helping the electronic device installed with the multi-in-one card holder to be an ultra-thin model. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure is a three-dimensional schematic diagram of the multi-in-one card holder of the present invention installed on a circuit board.

[0022] Figure 2 for Figure 1 Another angle of view.

[0023] Figure 3 It is a cross-sectional view of the multi-in-one card holder of the present invention cooperating with an electronic card, a card tray and a PCB.

[0024] Figure 4 It is a three-dimensional schematic diagram of PCB.

[0025] Figure 5 It is a three-dimensional schematic diagram of the all-in-one card holder of the present invention, without showing the rear terminal module.

[0026] Figure 6 for Figure 5 Another angle of view.

[0027] Figure 7 It is a three-dimensional schematic diagram of the upper housing component of the all-in-one card holder of the present invention.

[0028] Figure 8 for Figure 7 Another angle of view.

[0029] Fig. 9 It is a three-dimensional schematic diagram of the upper terminal module of the all-in-one card holder of the present invention.

[0030] Fig.10 It is a plan view of the upper terminal module of the multi-in-one card holder of the present invention.

[0031] Fig.11 for Fig.10 Another angle of view.

[0032] Fig.12 It is a three-dimensional schematic diagram of the lower terminal module of the all-in-one card holder of the present invention.

[0033] Fig.13 It is a three-dimensional schematic diagram of the rear terminal module of the all-in-one card holder of the present invention.

[0034] Fig.14 It is a three-dimensional schematic diagram of the card tray and the electronic card of the all-in-one card holder of the present invention. DETAILED DESCRIPTION

[0035] See also Figures 1 to 14 As shown, the multi-in-one card holder 100 of the present invention is installed on the circuit board (PCB) 200 in a partially sunken plate manner for plugging and unplugging the first, second and third electronic cards 301, 302 and 303. The front end of the circuit board 200 is provided with a notch 201 for installing the multi-in-one card holder 100 of the present invention. The multi-in-one card holder 100 includes an upper metal shell 10, an upper terminal module 20, a lower metal shell 30, a lower terminal module 40, an electronic component 50, a card ejection mechanism 60, a switch module 70 and a card tray 80.

[0036] The upper terminal module 20, the card ejection mechanism 60 and the switch module 70 are respectively assembled or formed on the upper metal shell 10 to form an upper shell assembly 101, and the lower terminal module 40 is assembled or formed on the lower metal shell 30 to form a lower shell assembly 102. The upper shell assembly 101 and the lower shell assembly 102 are buckled together. The width of the upper shell assembly 101 is greater than the width of the notch 201 of the circuit board 200, and is installed on the upper surface of the circuit board 200. The width of the lower shell assembly 102 is less than the width of the notch 201 of the circuit board 200, and is used to be installed in the notch 201. With this design, a part of the multi-in-one card holder 100 is located on the upper surface of the circuit board 200, and the other part adopts a sunken plate structure and is installed in the notch 201, thereby reducing the stacking height of the multi-in-one card holder 100 and the circuit board 200.

[0037] The upper metal shell 10 includes a top wall 11, two upper side walls 12 extending downwardly from the left and right ends of the top wall 11, a vertical upper mounting pin 13 extending downwardly from the upper side wall 12, and a rear wall 18 extending downwardly from the rear end of the top wall 11. The upper mounting pin 13 is used to be welded in the mounting hole 203 of the circuit board 200. An upper card slot 15 and a rear card slot 16 connected front and back are formed between the top wall 11 and the side wall 12. The upper card slot 15 is used for plugging and unplugging the first electronic card 301, and the rear card slot 16 is used for plugging and unplugging the third electronic card 303. In this embodiment, the first electronic card 301 and the third electronic card 303 are respectively Nano SIM cards, and the second electronic card 302 is a TF card.

[0038] The upper terminal module 20 includes an upper insulator 21 and an upper terminal group 22 disposed on the upper insulator 21. The upper insulator 21 is assembled or formed on the upper metal shell 10. Preferably, the upper insulator 21 is assembled or formed on the inner side of the top wall 11 of the upper metal shell 10. The upper terminal group 22 is assembled or embedded on the upper insulator 21. The upper terminal group 22 is configured as a Nano terminal for electrically connecting with the first electronic card 301. Each terminal of the upper terminal group 22 includes an upper contact portion 221, an upper welding foot 222, and an upper retaining portion 223 connecting the upper contact portion 221 and the upper welding foot 222. The upper contact portion 221 protrudes downward into the upper card slot 15. The upper welding foot 222 extends laterally out of the upper insulator 21 in the left and right directions and is arranged on the left and right sides of the upper insulator 21 for welding on the upper surface of the circuit board 200. The upper retaining portion 223 is fixed in the upper insulator 21.

[0039] Each upper soldering foot 222 is in a stepped shape, and includes a first horizontal portion 223, a second horizontal portion 225, and a vertical portion 224 vertically connecting the first and second horizontal portions 223 and 225. The first horizontal portion 223 protrudes laterally from the outer side of the upper insulator 21, and the second horizontal portion 225 extends in the opposite direction of the first horizontal portion 223 to the left and right sides of the notch 201 of the circuit board 200, and is used for soldering to the upper surface of the circuit board 200. The upper side wall 12 of the upper metal shell 10 is provided with a clearance 125, and the vertical portion 224 is located in the clearance opening 125.

[0040] The length of the lower metal shell 30 in the insertion direction (i.e., the front-to-back direction) is shorter than that of the upper metal shell 10. The upper metal shell 10 extends backward beyond the lower metal shell 30, so that the rear card slot 16 is located behind the lower metal shell 10. The portion of the upper metal shell 10 that extends backward beyond the lower metal shell 30 is located above the circuit board 200, and the lower metal shell 30 is located in the notch 201 of the circuit board 200. The lower metal shell 30 includes a bottom wall 31 opposite to the top wall 11 of the upper metal shell 10, a lower side wall 32 that bends upward from the left and right ends of the bottom wall 31, a horizontal lower mounting foot 33 that bends outward from the upper end of the lower side wall 32, and a retaining piece 34. A lower card slot 35 is formed between the bottom wall 31 and the two lower side walls 32. The lower card slot 35 is stacked with the upper card slot 15, but is located in front of the rear card slot 16.

[0041] Furthermore, the lower metal shell 30 is also provided with an additional mounting foot 36, which extends vertically downward. The additional mounting foot 36 is vertically connected to the upper end of the lower side wall 32 through a supporting sheet 38. When the multi-in-one card holder 100 of the present invention is installed on the circuit board 200, the supporting portion 38 is downwardly supported on the upper surface of the circuit board 200, and the additional mounting foot 36 is downwardly installed in the mounting hole 201 of the circuit board 200, thereby increasing the fixing strength between the lower metal shell 30 and the circuit board 200. In addition, the additional mounting feet 36 are located behind the lower mounting feet 13 of the upper metal shell 10 and are spaced apart from each other.

[0042] The lower mounting foot 33 is located inside the upper mounting foot 13 of the upper metal shell 10 and aligned with each other. The upper mounting foot 13 extends downward beyond the lower mounting foot 33. The lower mounting foot 33 is used to be welded to the upper surface of the circuit board 200. The buckle sheet 34 includes a horizontal portion 341 extending outward from the lower end of the lower side wall 32 and an upright portion 342 extending vertically upward from the outer end of the horizontal portion 341. The upright portion 342 is attached to the outer side of the upper side wall 12. There is a buckle hole 344 and a spring 124 between the two, which buckle together, so that the upper side wall 12 and the lower side wall 32 are buckled together, so that the upper shell assembly 101 and the lower shell assembly 102 are buckled together.

[0043] The lower terminal module 40 is assembled or integrally formed on the lower metal shell 30. Preferably, the lower insulator 41 of the lower terminal module 40 is assembled or injection molded on the bottom wall 31 of the lower metal shell 30. The lower terminal module 40 includes a lower insulating block 41 and a lower terminal group 42. The lower terminal group 42 is assembled or insert-molded on the lower insulating block 41. Each terminal of the lower terminal group 42 includes a lower contact portion 421 protruding upward into the lower card slot 35, a lower welding leg 422 extending backward from the lower insulating block 41, and a lower holding portion 423 connecting the lower contact portion 421 and the lower welding leg 422. The lower contact portion 421 is used to electrically contact the second electronic card 302 inserted in the lower card slot 35. In this embodiment, since the second electronic card 302 is a TF card, the lower terminal group 42 is set as a TF terminal group, and the lower welding leg 422 is used to be welded to the upper surface of the circuit board 200. The lower holding portion 423 is fixed in the lower insulator 41.

[0044] The electronic component 50 adopts a rear terminal module, which is disconnected from the upper metal shell 10 and not buckled together. The upper metal shell 10 is installed on the circuit board 200 after the electronic component 50 is installed on the circuit board 200. The upper metal shell 10 covers the outside of the electronic component 50. The electronic component 50 is located behind the upper terminal module 20 and is used to be installed on the circuit board 200. The electronic component 50 includes a rear insulator 51 and a rear terminal group 52. The rear terminal group 52 is assembled or insert-molded on the rear insulator 51. Each terminal of the rear terminal group 52 includes a rear contact portion 521 protruding upward into the rear card slot 16 and a rear welding foot 522 extending from the rear insulator 51. The rear contact portion 521 is used to electrically contact the third electronic card 303 inserted into the rear card slot 16, and the rear welding foot 522 is used to be welded on the circuit board 200 to achieve electrical connection between the third electronic card 303 and the circuit board 200. The rear retaining portion 523 is fixed in the rear insulator 51 . In the vertical direction perpendicular to the front-rear direction, the rear retaining portion 523 is higher than the lower retaining portion 423 but lower than the upper retaining portion 223 .

[0045] The card ejection mechanism 60 is assembled on the upper metal shell 10, and includes a push rod 61 and a crank 62. The push rod 61 is slidably arranged on the side wall 12 of the upper metal shell 10 in the front-back direction, and the crank 62 is rotatably arranged on the top wall 11 of the upper metal shell 10. The crank 62 includes a push portion 621 that protrudes forward into the rear card slot 16 and is used to abut the front end of the card tray 80, and a driving portion 622 that cooperates with the push rod 61. When the card tray 80 is inserted, the push portion 621 is pushed backward by the card tray 80, prompting the driving portion 622 to move forward until the card tray 80 is inserted to the final position. When the card needs to be ejected, the push rod 61 is manually pressed to push the driving portion 622 backward, so that the push portion 621 moves forward, and the card tray 80 is pushed to gradually exit the multi-in-one card holder 100. After the card ejection is completed, the card ejection mechanism 60 returns to the initial state.

[0046] The switch module 70 includes a movable terminal 71, a static terminal 72 and an insulating block 73. The movable terminal 71 is integrally connected to the rear end wall 18 of the upper metal shell 10. The movable terminal 71 includes an arc-shaped elastic arm 711 bent forward from the rear end wall 18 and extending into the rear slot 16, and a contact portion 712 is provided at the end of the elastic arm 711. The static terminal 72 is assembled or insert-molded on the insulating block 73. The static terminal 72 is arranged on the upper metal shell 10 through the insulating block 73. The insulating block 73 is assembled or insert-molded on the upper metal shell 10. The static terminal 72 is provided with a lap joint 722 located in front of the abutment 712, and they are in contact with each other. When the card tray 80 is nearly inserted into place, the card tray 80 presses the elastic arm 711 backward, causing the elastic arm 711 to drive the abutment 712 to swing backward and disengage from the lap joint 722. The moving terminal 71 and the static terminal 72 are switched from a closed state to an open state, realizing the function of a switch, so that the system can detect that the card tray 80 is inserted and unplugged.

[0047] The card tray 80 has an upper slot 81, a lower slot 82 and a rear slot 83. The upper slot 81 and the lower slot 82 are stacked up and down. The upper slot 81 is used to load the first electronic card 301 (i.e., Nano SIM card), the lower slot 82 is used to load the second electronic card 302 (i.e., TF card), and the rear slot 83 is used to load the third electronic card 303 (i.e., Nano SIM card). Therefore, the all-in-one card holder 100 can be electrically connected to at least one of the first, second, and third electronic cards 301, 203, and 303 at the same time.

[0048] The upper shell component 101 of the multi-in-one card holder of the present invention is longer than the lower shell component 102 and forms an integral structure, so that when the multi-in-one card holder 100 is installed on the circuit board 200, the required electronic components 50 can be installed on the lower side of the upper shell component 101 according to customer needs. Compared with the prior art, there is no need to provide different multi-in-one card holders 100 according to different customer needs, so as to reduce manufacturing costs and reduce energy loss. In addition, the upper card slot 15 and the lower card slot 35 are stacked, so that the first electronic card 301 inserted into the upper card slot 15 and the second electronic card 302 inserted into the lower card slot 35 can be stacked up and down, which is beneficial to reducing the length of the multi-in-one card holder 100 in the front-to-back direction, reducing the space in the front-to-back direction of the circuit board 200, and shortening the board length; the multi-in-one card holder 100 is installed on the circuit board 200, a part of the structure is located in the notch 201 of the circuit board 200, and the part of the structure mainly refers to the lower shell component 102, and the other part of the structure is located on the upper surface of the circuit board 200, mainly the upper shell component 101 and the electronic component 50, which reduces the stacking thickness of the multi-in-one card holder 100 and the circuit board 200, thereby helping to make the electronic device installed with the multi-in-one card holder 100 an ultra-thin model; the electronic component 50 and the upper shell component 101 and the lower shell component 102 are independently arranged, and the electronic component 50 and the upper shell component 101 and the lower shell component 102 are independently arranged. During installation, the electronic component 50 is generally installed on the circuit board 200 first, and then the upper housing assembly 101 and the lower housing assembly 102 are installed on the circuit board 200 as a whole. Of course, in other embodiments, the electronic component 50 can be eliminated or replaced with other types of connectors.

[0049] Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. An all-in-one card holder for mounting on a circuit board, characterized in that: The invention comprises an upper shell component and a lower shell component which are buckled together, the upper shell component comprises an upper metal shell and an upper terminal module arranged on the upper metal shell, the upper metal shell is provided with an upper card slot and a rear card slot which is connected to the upper card slot in front and back, when the multi-in-one card holder is installed on the circuit board, the rear card slot is located above the circuit board, the upper terminal module comprises an upper insulator and an upper terminal group arranged on the upper insulator, the upper terminal group is provided with an upper contact portion located in the upper card slot and an upper welding foot extending from the upper insulator, in the insertion direction, the length of the lower shell component is less than the length of the upper shell component, the lower shell component comprises a lower metal shell and a lower terminal module arranged on the lower metal shell, the lower metal shell is provided with a lower card slot located below the upper card slot, the lower terminal module comprises a lower insulator and a lower terminal group arranged on the lower insulator, the lower terminal group is provided with a lower contact portion located in the lower card slot and a lower welding foot extending from the lower insulator Foot, when the multi-in-one card holder is installed on the circuit board, at least part of the structure of the lower shell component is installed in the notch of the circuit board in a sunken plate manner, the upper metal shell extends backward beyond the lower metal shell to cause the rear card slot to be located behind the lower metal shell, and the part of the upper metal shell that exceeds the lower metal shell is located above the circuit board, so that the electronic component is installed on the circuit board in the rear card slot, the electronic component is a rear terminal module, and the rear terminal module is disconnected from the upper shell component; each of the upper welding feet is stepped and includes a first horizontal portion, a second horizontal portion and a vertical portion vertically connecting the first horizontal portion and the second horizontal portion, the first horizontal portion protrudes laterally from the outer side surface of the upper insulator, and the second horizontal portion extends in the opposite direction of the first horizontal portion to the left and right sides of the notch of the circuit board for welding to the upper surface of the circuit board, and the upper metal shell is provided with a clearance opening, and the vertical portion is located in the clearance opening.

2. The all-in-one card holder according to claim 1, characterized in that: The rear terminal module comprises a rear insulator and a rear terminal group arranged on the rear insulator. The rear terminal group comprises a rear contact portion located in the rear slot and a rear welding foot extending out of the rear insulator.

3. The all-in-one card holder according to claim 2, characterized in that: The upper terminal group includes an upper holding portion connecting the upper contact portion and the upper welding leg, and the upper holding portion is fixed in the upper insulator; the lower terminal group includes a lower holding portion connecting the lower contact portion and the lower welding leg, and the lower holding portion is fixed in the lower insulator; the rear terminal group includes a rear holding portion connecting the rear contact portion and the rear welding leg, and the rear holding portion is fixed in the rear insulator. In the vertical direction perpendicular to the front-to-back direction, the rear holding portion is higher than the lower holding portion, but lower than the upper holding portion.

4. The all-in-one card holder according to claim 1, characterized in that: It also includes a card ejection mechanism installed on the upper metal shell, the card ejection mechanism includes a push rod and a crank, the push rod is slidably arranged on the upper metal shell along the front-back direction, the crank is rotatably arranged on the upper metal shell, and the crank includes a pushing part protruding forward into the rear card slot and a driving part cooperating with the push rod.

5. The all-in-one card holder according to claim 1, characterized in that: The upper welding foot extends laterally out of the upper insulator along the left-right direction and is used for welding on the upper surface of the circuit board.

6. The all-in-one card holder according to claim 1, characterized in that: The lower welding leg extends backward out of the lower insulator and is used for welding on the upper surface of the circuit board.

7. The all-in-one card holder according to claim 1, characterized in that: The upper metal shell includes a top wall and upper side walls bent downward from the left and right ends of the top wall, the upper slot is located between the top wall and the upper side walls, the lower metal shell includes a bottom wall opposite to the top wall, a lower side wall extending upward from the left and right ends of the bottom wall and used to be located in the notch of the circuit board, and a lower mounting foot bent outward from the upper end of the lower side wall and extended to support the upper surface of the circuit board, and the lower slot is located between the bottom wall and the lower side wall.

8. The all-in-one card holder according to claim 7, characterized in that: The lower metal shell also includes a retaining plate, which includes a horizontal portion extending outward from the lower end of the lower side wall and an upright portion extending upward from the outer end of the horizontal portion. A retaining hole and a spring sheet that are retaining each other are provided between the upright portion and the upper side wall.

9. The all-in-one card holder according to claim 7, characterized in that: The lower metal shell is also provided with an additional mounting foot extending vertically downward, and the additional mounting foot is vertically connected to the upper end of the lower side wall through a supporting plate. When the multi-in-one card holder is installed on the circuit board, the supporting plate is supported downward on the upper surface of the circuit board, and the additional mounting foot is installed downward in the mounting hole of the circuit board.

10. The all-in-one card holder according to claim 7, characterized in that: The upper metal shell also includes an upper mounting foot extending downward from the upper side wall and in a vertical shape, and is used for being mounted in the mounting hole of the circuit board.

11. The all-in-one card holder according to claim 1, characterized in that: The upper shell assembly also includes a switch module, which includes a moving terminal, a static terminal and an insulating block. The moving terminal is integrally connected to the upper metal shell, and the moving terminal is provided with an elastic arm protruding forward into the rear slot and an abutment portion provided at the end of the elastic arm. The static terminal is provided on the insulating block, and the static terminal is provided with a lap portion that contacts or disconnects from the abutment portion. The insulating block is provided on the upper metal shell.

12. The all-in-one card holder according to claim 2, characterized in that: The upper terminal group and the rear terminal group are configured as Nano terminals for electrically contacting a Nano SIM card; the lower terminal group is configured as a TF terminal for electrically contacting a TF card.

13. The all-in-one card holder according to claim 2, characterized in that: It also includes a card tray plugged into the upper card slot, the lower card slot and the rear card slot, the card tray is provided with an upper slot for loading a first electronic card, a lower slot for a second electronic card and a rear slot for a third electronic card, and the upper card slot and the lower slot are arranged correspondingly up and down.

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