Connector with automatic power-off function

Abstract

The utility model discloses an automatic power-off connector, which comprises a shell, a terminal group and a circuit board, the terminal group is fixed inside the shell through an insulator, one end of the circuit board is welded and fixed with the terminal group, the other end of the circuit board extends out of the shell, a chip and a detection circuit are arranged on the surface of the circuit board, and the detection circuit is electrically connected with the circuit board. The detection circuit comprises a micro-control unit and a voltage acquisition unit which are arranged in a chip, an on-chip impedance is arranged in the micro-control unit and is arranged between a first pin and a second pin of the chip, and the voltage acquisition unit is used for acquiring the voltage difference between the first pin and the second pin. The voltage difference and the on-chip impedance are used for determining the working current of the chip. According to the automatic power-off connector provided by the utility model, the automatic power-off function is integrated into the connector, so that the connector can be automatically powered off in the use process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of connector, especially a kind of connector of automatic power-off. BACKGROUND

[0002] The existing data line is mainly connected between different devices by the connector at both ends, and the data line is used with charging head, which can charge the device. When the device is charged, it needs to be powered off in time after charging is completed. The existing device mainly relies on its own detection for automatic power-off. However, some small devices do not have power-off function. Therefore, in order to avoid overcharging, a connector with power-off function is needed for detection. INVENTION CONTENT

[0003] The utility model aims at providing a kind of connector of automatic power-off, integrates automatic power-off function into connector, so that the connector can be automatically powered off during use.

[0004] The utility model discloses a kind of connector of automatic power-off, and the technical scheme adopted is:

[0005] A kind of connector of automatic power-off, including shell, terminal group and circuit board, the terminal assembly is fixed in the inside of shell by insulator, one end of the circuit board is welded with terminal group and is fixed, the other end of the circuit board extends out of shell, the surface of the circuit board is equipped with chip and detection circuit, the detection circuit includes micro-control unit and voltage acquisition unit arranged in the inside of chip, the micro-control unit is equipped with chip impedance, the chip impedance is arranged between the first pin and the second pin of chip, the voltage acquisition unit is used to obtain the voltage difference between the first pin and the second pin, the voltage difference and the chip impedance are used to determine the working current of the chip.

[0006] As a preferred scheme, one end of the terminal group extends to the tail of the shell, the terminal group includes several contact terminals and hooks, several contact terminals are arranged in the insulator, the hooks are transversely arranged in the middle of contact terminals, and one end of the contact terminal extends out of the insulator and is welded with the circuit board.

[0007] As a preferred scheme, the contact terminal includes contact area, connection area and welding area, the contact area includes two elastic sheets arranged oppositely, the elastic sheets are fixedly connected by the connection area, the elastic sheets protrude from the inner wall of the insulator, the welding area includes two welding arms arranged oppositely, and the side surface of the connection area is provided with convex points and concave points.

[0008] As a preferred scheme, the shell is provided with extension arms on two sides, the extension arms extend to two sides of the circuit board, and the extension arms are welded and fixed with ground contacts on the circuit board.

[0009] As a preferred scheme, the terminal group comprises a plurality of contact terminals, the plurality of contact terminals are welded on the surface of the circuit board respectively, the shell is provided with contact windows corresponding to the contact terminals, one end of the circuit board extends to a position corresponding to the contact windows in the shell, and the insulator is fixed to the contact windows corresponding to the contact terminals.

[0010] As a preferred scheme, the terminal group comprises a plurality of contact terminals and two elastic hooks, the plurality of contact terminals are arranged in the shell, one end of the contact terminals extends to the surface of the circuit board and is welded and fixed, the elastic hooks are arranged on two sides of the contact terminals, one end of the elastic hooks extends through the bottom surface of the shell, and the insulator is fixed in the shell.

[0011] As a preferred scheme, the circuit board is provided with LED lamp beads on the upper surface and the lower surface, and the LED lamp beads are electrically connected with the circuit board.

[0012] As a preferred scheme, the chip adopts an EN10ZDD single-chip microcomputer chip.

[0013] The automatic power-off connector has the advantages that the terminal group is fixed in the shell through the shell and the insulator, the terminal group is protected by the shell, the circuit board is welded and fixed with one end of the terminal group, the device can be connected and conducted with the circuit board through the terminal group after the connector is inserted into the device, the working current of the chip on the surface of the circuit board is detected according to the internal impedance characteristics of the chip, the calibration can be built-in in the chip, the influence of the internal impedance difference of different individual chips can be reduced, the change of the internal current of the chip is accurately detected, accurate indication or control is made to the outside through the chip pin, and the purpose of automatic power-off is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 Fig. 1 is a structure schematic view of an embodiment 1 of the automatic power-off connector.

[0015] Figure 2 Fig. 2 is an internal structure schematic view of the embodiment 1 of the automatic power-off connector.

[0016] Figure 3 Fig. 3 is a contact terminal structure schematic view of the embodiment 1 of the automatic power-off connector.

[0017] Figure 4 Fig. 4 is a detection circuit structure schematic view of the automatic power-off connector.

[0018] Figure 5It is embodiment 2 structure schematic view of the utility model of automatic power-off connector.

[0019] Figure 6 It is embodiment 2 explosion map of the utility model of automatic power-off connector.

[0020] Figure 7 It is embodiment 3 structure schematic view of the utility model of automatic power-off connector.

[0021] Figure 8 It is chip schematic view of the utility model of automatic power-off connector. DETAILED DESCRIPTION

[0022] The utility model will be further described and explained in connection with specific embodiments and the drawings of the specification:

[0023] Embodiment 1

[0024] Please refer to Figure 1 , Figure 2 And Figure 4 , an automatic power-off connector, including shell 10, terminal group 20 and circuit board 30, terminal group 20 piece is fixed in the inside of shell 10 through insulator 11, and one end of circuit board 30 is welded fixed with terminal group 20, and the other end of circuit board 30 extends out of shell 10.

[0025] Terminal group 20 is fixed in the inside of shell 10 through shell 10 and insulator 11, utilizes shell 10 to protect terminal group 20, and the one end of circuit board 30 is welded fixed with terminal group 20, so that the connector can be connected and conducted through terminal group 20 after being inserted into equipment with circuit board 30.

[0026] The surface of circuit board 30 is equipped with chip 100 and detection circuit, and the detection circuit includes micro-control unit 110 and voltage acquisition unit 120 arranged in chip 100, the chip internal impedance 111 is arranged in the micro-control unit 110, the chip internal impedance 111 is arranged between the first pin P1 and the second pin P2 of chip 100, the voltage acquisition unit 120 is used to acquire the voltage difference between the first pin P1 and the second pin P2, and the voltage difference and the chip internal impedance 111 are used to determine the working current of chip 100.

[0027] The internal impedance characteristic of chip 100 on the surface of circuit board 30 detects the working current size of chip 100, can also be calibrated in chip 100, can reduce the influence of internal impedance difference of different individual chips 100, accurately detects the change of current flowing through the internal current of chip 100, and makes accurate indication or control to the outside through the pin of chip 100, to realize the purpose of automatic power-off.

[0028] The terminal set 20 comprises a plurality of contact terminals 21 and a clamping hook 22. The plurality of contact terminals 21 are arranged in an interval and embedded in the insulator 11. The clamping hook 22 is transversely clamped in the middle of the contact terminals 21. One end of the contact terminals 21 extends out of the insulator 11 and is welded with the circuit board 30.

[0029] Please refer to Figure 3 The contact terminal 21 comprises a contact area, a connecting area 212 and a welding area. The contact area comprises two elastic pieces 211 arranged oppositely. The elastic pieces 211 are fixedly connected through the connecting area 212. The elastic pieces 211 protrude from the inner wall of the insulator 11. The welding area comprises two welding arms 213 arranged oppositely. The side surface of the connecting area 212 is provided with a convex point 214 and a concave point 215. The convex point 214 and the concave point 215 can increase the connection tightness between the contact terminal 21 and the insulator 11, so as to avoid the loosening or displacement of the connector during the plugging process.

[0030] The extension arm 12 is arranged on both sides of the shell 10 and extends to both sides of the circuit board 30. The extension arm 12 is welded and fixed with the grounding contact on the circuit board 30. The extension arm 12 can further fix the circuit board 30, so as to ensure the strength of the part of the circuit board 30 extending to the extension arm 12 and avoid the bending of the circuit board 30. Meanwhile, the welding firmness of the circuit board 30 and the terminal set 20 is improved.

[0031] Embodiment 2

[0032] Please refer to Figure 5 The terminal set 20 comprises a plurality of contact terminals 21. The plurality of contact terminals 21 are welded on the surface of the circuit board 30. The shell 10 is provided with a contact window 13 corresponding to the contact terminal 21. One end of the circuit board 30 extends to the position corresponding to the contact window 13 in the shell 10. The insulator 11 is fixed to the contact window 13 corresponding to the contact terminal 21.

[0033] Therefore, one end of the circuit board 30 extends to the shell 10. The size of the contact terminal 21 is reduced. The length of the circuit board 30 is increased. The circuit board 30 and the shell 10 are fixedly connected through the insulator 11. The connection strength of the circuit board 30 is improved.

[0034] Embodiment 3

[0035] Please refer to Figure 6 and Figure 7 The terminal set 20 comprises a plurality of contact terminals 21 and two elastic hooks 23. The plurality of contact terminals 21 are arranged in the shell 10. One end of the contact terminal 21 extends to the surface of the circuit board 30 and is welded and fixed. The elastic hooks 23 are arranged on both sides of the contact terminal 21. One end of the elastic hook 23 extends through the bottom surface of the shell 10. The insulator 11 is fixed in the shell 10.

[0036] Thus, the spring hook 23 is used to achieve the grounding effect when the connector is inserted.

[0037] The chip 100 adopts an EN10ZDD single-chip microcomputer chip 100, Figure 8 The EN10ZDD shown only shows the current detection related part of the pin, wherein the pin G1 corresponds to the first pin P1, the pin G2 corresponds to the second pin P2, and an internal impedance is arranged between the pin G1 and the pin G2. When the chip 100 works, the micro-control unit in the chip 100 can obtain the voltage parameter between the pin G1 and the pin G2, calculate the working current of the chip 100, and enable the chip 100 to perform real-time current monitoring. The EN10ZDD is also provided with an enable pin PA2, the enable pin PA2 can be connected with an enable signal EN, and the enable signal EN can be used to control the on-off of the power supply corresponding to the chip 100. The EN10ZDD is also provided with a voltage detection pin PB2, the voltage detection pin PB2 can be connected with a related voltage detection unit, and the voltage detection unit is output with the voltage of the chip 100, so that the voltage detection unit can detect whether the voltage signal of the chip 100 is abnormal according to the voltage of the chip 100.

[0038] The circuit board 30 is provided with LED lamp beads 31 on the upper and lower surfaces, the LED lamp beads 31 are electrically connected with the circuit board 30, so that the LED lamp beads 31 can be seen on the front and back surfaces of the connector, and the working state of the connector can be better seen. Specifically, the number of the LED lamp beads 31 is two, and the colors are green and blue respectively. The specific working conditions can be as follows:

[0039] 1. When the power is connected and the power is empty, the LED lamp is not lit;

[0040] 2. When the connector is inserted into the equipment for charging, the green / blue lamp is lit for a moment, and then enters the charging breathing state;

[0041] 3. When the voltage is 5V, the blue lamp breathes; when the voltage is 9V, the green lamp breathes;

[0042] 4. When the charging current is 100-280MA, the lamp changes from breathing to constant light, and the equipment is full of power by default;

[0043] 5. After the full power, the lamp is always on, and the charging continues. After about 30-40 minutes, the lamp is off, and the automatic protection is entered;

[0044] 6. After 2H of automatic protection, the charging is automatically restored, and then the above actions are repeated.

[0045] The utility model provides a kind of automatic power-off connector, terminal group is fixed in shell interior by shell and insulator, utilize shell to protect terminal group, circuit board and terminal group one end are welded fixed, so that connector can be connected to device and circuit board by terminal group after being inserted into equipment, the working current size of chip internal impedance characteristic detection chip on the surface of circuit board, calibration can also be built-in in chip, the influence of different individual chip internal impedance difference can be reduced, the change of current flowing through chip internal current is accurately detected, accurate indication or control is made to outside by chip pin, to realize the purpose of automatic power-off.

[0046] Finally, it should be noted that the above examples are used to illustrate the technical solutions of the present utility model, and are not intended to limit the scope of protection of the present utility model. Although the present utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present utility model can be modified or replaced equivalently without departing from the essence and scope of the present utility model.

Claims

1. An automatic disconnecting connector, characterized by, The application relates to a terminal assembly and a circuit board, the terminal assembly is fixed in the shell through an insulator, one end of the circuit board is welded with the terminal assembly, the other end of the circuit board extends out of the shell, a chip and a detection circuit are arranged on the surface of the circuit board, the detection circuit comprises a micro-control unit and a voltage acquisition unit arranged in the chip, an internal impedance is arranged in the micro-control unit, the internal impedance is arranged between a first pin and a second pin of the chip, the voltage acquisition unit is used for acquiring a voltage difference between the first pin and the second pin, and the voltage difference and the internal impedance are used for determining the working current of the chip.

2. An automatic disconnecting connector as claimed in claim 1, wherein, One end of the terminal assembly extends to the tail of the shell, the terminal assembly comprises a plurality of contact terminals and a hook, the plurality of contact terminals are arranged in the insulator at intervals, the hook is arranged in the middle of the contact terminals in a transverse mode, and one end of the contact terminal extends out of the insulator and is welded with the circuit board.

3. The connector with automatic power-off as described in claim 2, characterized in that, The contact terminal comprises a contact area, a connecting area and a welding area, the contact area comprises two elastic sheets arranged oppositely, the elastic sheets are fixedly connected through the connecting area, the elastic sheets protrude from the inner wall of the insulator, the welding area comprises two welding arms arranged oppositely, and the side surface of the connecting area is provided with convex points and concave points.

4. The connector with automatic power-off as described in claim 3, characterized in that, Extension arms are arranged on the two sides of the shell, the extension arms extend to the two sides of the circuit board, and the extension arms are welded with grounding contacts on the circuit board.

5. An automatic disconnecting connector as claimed in claim 1, wherein, The terminal assembly comprises a plurality of contact terminals, the plurality of contact terminals are welded on the surface of the circuit board, the shell is provided with a contact window corresponding to the contact terminals, one end of the circuit board extends to the position corresponding to the contact window in the shell, and the insulator is fixed in the contact window corresponding to the contact terminals.

6. An automatic disconnecting connector as claimed in claim 1, wherein, The terminal assembly comprises a plurality of contact terminals and two elastic hooks, the plurality of contact terminals are arranged in the shell, one end of the contact terminal extends to the surface of the circuit board and is welded, the elastic hooks are arranged on the two sides of the contact terminal, one end of the elastic hook extends through the bottom surface of the shell, and the insulator is fixed in the shell.

7. An automatic disconnecting connector as claimed in claim 1, wherein, LED lamp beads are arranged on the upper and lower surfaces of the circuit board and are electrically connected with the circuit board.

8. An automatic disconnecting connector as claimed in claim 1, wherein, The chip adopts an EN10ZDD single-chip microcomputer chip.

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