CN111799871A - A new type of mobile phone charging device - Google Patents

Abstract

The invention discloses a new type of mobile phone charging device in the technical field of mobile phone charging, aiming at solving the technical problems in the prior art that mobile phones are charged by using a charging port, which affects the sealing performance of the mobile phone, and frequent plugging and unplugging easily leads to aging and failure of the charging port . The device includes a mobile phone back cover, a charging terminal and a charging cable connected to the charging terminal. The charging terminal includes a plastic casing, a magnet, a PCBA board and conductive contacts. The PCBA board is welded with Type‑C socket terminals, eMarker chips and conductive contacts; the back cover of the mobile phone is provided with through holes, and the through holes inside the back cover of the mobile phone are covered with FPC The conductive contact of the cable, the FPC cable is connected to the mainboard of the mobile phone through the cable socket; there is a magnet on the inside of the back cover of the mobile phone. The conductive contacts of the charging terminals are in contact with the conductive contacts of the FPC cables on the inner side of the back cover of the mobile phone through the through holes of the mobile phone.

Description

A new type of mobile phone charging device

technical field

The invention relates to a novel mobile phone charging device, which belongs to the technical field of mobile phone charging.

Background technique

Most of the current mobile phones use the charging port for charging. This charging method has the following disadvantages: it affects the sealing performance of the mobile phone, which is not conducive to waterproof and dustproof; a large amount of dust accumulates on the charging port, which leads to poor contact between the male and female connectors, and frequent plugging and unplugging can easily lead to aging of the charging port. and invalidation. These drawbacks not only affect the user experience, but also restrict the further improvement of the durability and technical performance of mobile phone products.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies in the prior art and provide a new type of mobile phone charging device, including a mobile phone back cover, a charging terminal and a charging cable connected to the charging terminal; the charging terminal includes a magnet and a PCBA board connected to the charging cable. , Welded conductive contacts on the lower end of the PCBA board; the inner side of the back cover of the mobile phone is provided with conductive contacts of the FPC cable corresponding to and covering the through holes, and the FPC cable socket is connected to the mobile phone motherboard; The magnet corresponding to the magnet of the terminal, when the lower end of the charging terminal faces the outside of the back cover of the mobile phone, the inner magnet and the magnet on the inside of the back cover of the mobile phone attract each other, and the conductive contacts of the charging terminal are connected to the FPC through the through hole of the back cover of the mobile phone. The conductive contacts of the ribbon are in contact with each other.

Further, the charging terminal also includes an upper casing and a lower casing for accommodating the PCBA board, the magnet of the charging terminal is arranged in the magnet fixing groove of the lower casing, the upper casing and the lower casing are both insulating materials, and the conductive contacts are filled in the lower casing. Conductive contact fixing slot.

Further, the insulating material includes plastic, the magnet includes a neodymium magnet, and the conductive contact is a nickel-plated copper alloy.

Further, the charging cable is a USB type-C data cable, the PCBA board is welded with a Type-C female terminal and an eMarker chip, and the USB type-C data cable is connected to the PCBA board through the female terminal; the conductive contact There are eight points, and the eight charging contacts correspond to the VBUS1/2, GND1/2, D+/D-, CC pins connected to the female terminal of the PCBA board and the VCONN pin of the eMarker chip.

Further, the size of the through hole in the back cover of the mobile phone is related to the size of the conductive contacts of the charging terminal, and the positions correspond one by one; the magnets inside the back cover of the mobile phone are equal in size and corresponding in positions to the magnets in the charging terminal.

Further, the conductive contacts of the FPC cable are connected to the VBUS1/2, GND1/2, D+/D-, CC1/2 pins of the mobile phone mainboard interface through the FPC cable socket.

Further, the size of the conductive contacts of the FPC cable is related to the size of the conductive contacts of the charging terminal, and the positions correspond one-to-one.

Compared with the prior art, the present invention has the beneficial effects of enhancing the sealing performance of the mobile phone, preventing a large amount of dust from accumulating on the charging port, solving the problem of premature aging of the charging port due to frequent plugging and unplugging and charging, and helping to prolong the use of the mobile phone. Life; the charging terminal is small in size, easy to carry, and low in manufacturing cost.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

2 is a schematic diagram of the external structure of the charging terminal according to the present invention;

3 is a schematic diagram of the internal structure of the lower end face of the PCBA board and the upper end shell of the charging terminal according to the present invention;

4 is a schematic structural diagram of the lower housing assembly magnet and conductive contact according to the present invention;

5 is a schematic diagram of the internal structure of the lower housing according to the present invention;

6 is a schematic diagram of the structure of the outer side of the mobile phone back cover according to the present invention;

FIG. 7 is a schematic diagram of the structure of the magnet and the FPC cable arranged inside the back cover of the mobile phone according to the present invention;

8 is a schematic diagram of the structure of the FPC cable of the present invention;

FIG. 9 is a circuit schematic diagram of the PCBA board in the charging terminal according to the present invention.

In the picture: 1. Magnetic interface module; 2. USB Type-C data cable; 3. Mobile phone back cover; 4. Upper shell; 5. Lower shell; 6. PCBA board; 7. Conductive contact; 8. Magnet; 9. Conductive contact fixing slot; 10. Magnet fixing slot; 11. Through hole in the back cover of mobile phone; 12. FPC cable; 13. FPC cable conductive contact; 14. FPC cable socket.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the patent of the present invention.

It should be noted that, in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer" and the like indicate the orientation or position The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. The terms "front", "rear", "left", "right", "upper" and "lower" used in the description of the present invention refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to is the direction toward or away from the geometric center of a particular part.

As shown in FIG. 1 , which is a schematic diagram of the overall structure of the present invention, a new type of mobile phone charging device includes a charging terminal 1 , a USB Type-C data cable 2 , and a mobile phone back cover 3 .

More specifically, as shown in FIG. 2 , which is a schematic diagram of the external structure of the charging terminal according to the present invention, the charging terminal 1 includes a PCBA board 6 and an upper shell 4 and a lower shell 5 for accommodating the PCBA board 6 . The upper shell 4 and the lower shell 5 are made of plastic material, which play the role of insulation and protection. The lower end surface of the PCBA board 6 is welded with eight conductive contacts 7, and the eight conductive contacts 7 correspond to the VBUS1/2, GND1/2, D+/D-, CC pins and VCONN pin of eMarker chip.

As shown in Figure 3, it is a schematic diagram of the internal structure of the lower end surface of the PCBA board and the upper end shell of the charging terminal according to the present invention. The -C data line 2 is connected to the PCBA board 6 through the female terminal.

As shown in FIG. 4 , it is a schematic diagram of the structure of the lower housing assembled with magnets and conductive contacts according to the present invention. The eight conductive contacts 7 are installed in the conductive contact fixing slots 9 at the bottom of the lower housing 5 , and the magnet fixing slots at the bottom of the lower housing 5 10 is fitted with a magnet 8 .

As shown in FIG. 5 , which is a schematic diagram of the internal structure of the lower housing according to the present invention, the bottom of the lower housing 5 is provided with eight conductive contact fixing slots 9 and one magnet fixing slot 10 . The eight conductive contacts 7 installed at the bottom of the lower housing 5 are evenly arranged in two rows, so as to reduce the diameter of the charging terminal 1 and have a beautiful appearance; the ring shape of the magnet 8 is conducive to the uniform force of the charging terminal.

As shown in FIG. 6 and FIG. 7 , it is a schematic diagram showing the structure of assembling magnets and FPC cables on the outside and inside of the back cover of the mobile phone according to the present invention. There is a magnet 8 on the inside of the back cover 3 of the mobile phone, and the magnet 8 is the same size as the magnet 8 in the charging terminal. are equal, and the positions are corresponding; the inner side of the back cover 3 of the mobile phone is provided with an FPC cable conductive contact 13 corresponding to the through hole 11 and covering the through hole 11 .

As shown in FIG. 8, it is a schematic diagram of the structure of the FPC cable according to the present invention. The conductive contacts of the FPC cable are related to the size of the conductive contacts of the charging terminal, and the positions correspond one by one. The FPC cable socket 14 is connected to the mobile phone motherboard.

As shown in FIG. 9 , it is the circuit schematic diagram of the PCBA board in the charging terminal according to the present invention, wherein the capacitor and the resistor are integrated in the eMarker chip, and the unconnected pins are left floating.

When the lower end surface of the charging terminal 1 faces the outside of the back cover 3 of the mobile phone and approaches, the magnet 8 of the charging terminal 1 and the magnet 8 of the back cover 3 of the mobile phone attract each other to fix and align the conductive contacts 7 and the conductive contacts of the FPC cable. 13, since the magnet 8 of the charging terminal 1 is installed at the bottom of the lower housing 5, it is beneficial to reduce the action distance and enhance the magnet attraction; The function of the mobile phone for charging and data transmission.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principle of the present invention, several improvements and modifications can also be made. These improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (7)

1. A novel mobile phone charging device is characterized by comprising a mobile phone rear cover (3), a charging terminal (1) and a charging wire (2) connected with the charging terminal (1); the charging terminal (1) comprises a magnet (8) and a PCBA (printed circuit board assembly) board (6) connected with a charging wire, and a conductive contact (7) is welded on the lower end face of the PCBA board (6); the inner side of the mobile phone rear cover (3) is provided with an FPC (12) conductive contact (13) which corresponds to the through hole (11) and covers the through hole (11), and an FPC jack (14) is connected to a mobile phone mainboard; the inner side of the rear cover (3) of the mobile phone is provided with a magnet (8) corresponding to the magnet (8) of the charging terminal (1), when the lower end surface of the charging terminal (1) is close to the outer side of the rear cover (3) of the mobile phone, the magnet (8) inside the charging terminal and the magnet (8) on the inner side of the rear cover (3) of the mobile phone are mutually attracted, and the conductive contact (7) of the charging terminal (1) is mutually contacted with the conductive contact (13) of the FPC flat cable (12) through a through hole (11) of the rear cover (3) of the mobile phone.

2. The novel mobile phone charging device as claimed in claim 1, wherein the charging terminal (1) further comprises an upper housing (4) and a lower housing (5) for accommodating the PCBA board (6), the magnet (8) of the charging terminal (1) is disposed in the magnet fixing groove (10) of the lower housing (5), the upper housing (4) and the lower housing (5) are made of insulating materials, and the conductive contact (7) is filled in the conductive contact fixing groove (9) of the lower housing (5).

3. The socketless magnetic charging device for mobile phones according to claim 2, wherein the insulating material comprises plastic, the magnet (8) comprises neodymium magnet, and the conductive contact (7) is nickel-plated copper alloy.

4. The socket-free magnetic mobile phone charging device of claim 1, wherein the charging wire is a USBtype-C data wire (2), a Type-C female socket terminal and an eMarker chip are welded on the PCBA (6), and the USB Type-C data wire (2) is connected with the PCBA (6) through the female socket terminal; the eight conductive contacts (7) are correspondingly connected with VBUS1/2, GND1/2, D +/D-, and CC pins of a female seat terminal of the PCBA board (6) and a VCONN pin of an eMarker chip respectively.

5. The magnetic mobile phone charging device without the jack according to claim 1, wherein the through hole (11) of the mobile phone rear cover (3) is related to the size and the position of the conductive contact (7) of the charging terminal (1) in a one-to-one correspondence; the magnet (8) on the inner side of the rear cover (3) of the mobile phone is equal to the magnet (8) in the charging terminal (1) in size and corresponds to the charging terminal in position.

6. The magnetic mobile phone charging device without the jack of claim 1, wherein the conductive contact (13) of the FPC (12) is connected to the pins VBUS1/2, GND1/2, D +/D-, CC1/2 of the mobile phone motherboard interface through the FPC jack (14).

7. The magnetic mobile phone charger without the jack of claim 6, wherein the conductive contact (13) of the FPC (12) is related to the conductive contact (7) of the charging terminal (1) in size and in one-to-one correspondence in position.

Images