Plug and socket structure for charging lithium battery of electric baby carriage

Abstract

The utility model discloses a plug and socket structure for charging a lithium battery of an electric baby carriage, relates to an electric baby carriage, and aims to solve the hidden danger of mismatching of a charger in a traditional round hole baby carriage charging structure. The technical scheme is characterized in that the plug and socket structure for charging the lithium battery of the electric baby carriage comprises a plug and a socket, the plug is provided with an electric wire used for being electrically communicated with the transformation charger, the socket is fixedly installed on the baby carriage and communicated with a power source and a control circuit of the baby carriage, the plug comprises a non-circular plugging part and an injection molding shell, and an adaptive groove is formed in the front end face of the non-circular plugging part; the socket comprises a main assembly seat, the front end face of the main assembly seat is provided with a non-circular plug-in groove, and the groove bottom of the non-circular plug-in groove is provided with an adaptive column which is in adaptive plug-in connection with the adaptive groove. The plug and socket structure for charging the lithium battery of the electric baby carriage ensures that the plug with the corresponding voltage can only be inserted into the socket with the corresponding voltage, so that the potential safety hazard caused by mismatching of a charger when a user charges is eliminated.

Description

Technical Field

[0001] This utility model relates to electric children's vehicles, and more specifically, to a plug and socket structure for charging lithium batteries in electric children's vehicles. Background Technology

[0002] Electric children's cars are a type of toy car that children can drive and sit in, driven by an electric motor. Currently, electric children's cars on the market are generally equipped with a socket for charging with a plug.

[0003] Electric strollers sold in the Chinese or American markets use lead-acid batteries, which do not have high voltage requirements. Therefore, the sockets for these strollers generally use a simple round hole structure.

[0004] However, strollers sold in the European market need to use lithium batteries due to European standards. Lithium batteries have high voltage requirements, meaning that the voltage of the plug and socket must be compatible during charging, otherwise there will be significant safety hazards. The traditional round hole structure has certain mismatch risks. Therefore, a new solution is needed to solve this problem. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a plug and socket structure for charging lithium batteries in electric children's vehicles, ensuring that plugs of corresponding voltages can only be inserted into sockets of corresponding voltages, thereby eliminating safety hazards caused by users using the wrong charger during charging.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a plug and socket structure for charging lithium batteries of electric children's vehicles, including a plug and a socket. The plug is provided with wires for electrically connecting to a transformer charger. The socket is fixedly installed on the children's vehicle and connected to the power supply and control circuit of the children's vehicle. The plug includes a non-circular insertion part and an injection-molded shell covering the rear section of the non-circular insertion part. The front end face of the non-circular insertion part is provided with an adapter groove. The socket includes a main mounting base assembled on the children's vehicle. The front end face of the main mounting base is provided with a non-circular insertion groove for the non-circular insertion part to be inserted. The bottom of the non-circular insertion groove is provided with an adapter post that is adapted to the adapter groove for insertion.

[0007] By adopting the above technical solution, the plug uses a non-circular insertion part to cooperate with the non-circular insertion slot of the socket, thereby limiting the relative angle between the plug and the socket when plugged in, ensuring that the positive terminal is connected to the positive terminal and the negative terminal is connected to the negative terminal during charging; the non-circular insertion part uses an adapter slot to cooperate with the adapter post of the non-circular insertion slot, thereby ensuring that the plug of the corresponding voltage can only be inserted into the socket of the corresponding voltage, thereby eliminating the safety hazards caused by users using the wrong charger when charging.

[0008] The present invention is further configured such that: the non-circular plug part has a rectangular cross-section, and its upper and lower end faces are respectively provided with plug copper plate grooves, and a positive copper plate and a negative copper plate are respectively placed in the two plug copper plate grooves; a positioning pin is provided at the bottom of the plug copper plate groove, and the positive copper plate and the negative copper plate are provided with positioning pin holes for the positioning pin to be inserted.

[0009] The present invention is further configured such that: the rear section of the non-circular plug-in part is fitted with an assembly sleeve, and the inner wall of the assembly sleeve presses and fixes the positive electrode copper sheet and the negative electrode copper sheet.

[0010] The present invention is further configured such that: the front end face of the assembly sleeve is provided with an insert plate, the front end face of the main assembly base is provided with an insert plate groove for inserting the insert plate, and there is a partition wall between the insert plate groove and the non-circular insertion groove.

[0011] The present invention is further configured such that: a positive power electrode is provided on the side of the partition wall facing the non-circular insertion slot, and a negative charging electrode is provided on the groove wall of the non-circular insertion slot facing the positive power electrode.

[0012] The present invention is further configured such that: the main mounting base is symmetrically provided with two outer extension walls along both sides of the partition wall, and a discharge positive electrode plate is provided between the two outer extension walls; the discharge positive electrode plate is electrically connected to the control circuit and execution circuit of the stroller; a grounding window is provided through the partition wall; conductive silver points are provided opposite to the discharge positive electrode plate and the power positive electrode plate; the two conductive silver points are connected to each other through the grounding window; the plug is inserted into the plug slot to cover the grounding window and separate the two conductive silver points.

[0013] The present invention is further configured such that: the two outer extension covers are provided with rear-mounted pressure covers, the top surface of the rear-mounted pressure covers is provided with a pressing plate, the pressing plate presses the discharge positive electrode sheet tightly against the partition wall; the rear-mounted pressure covers are provided with elastic reset pressure columns, and an elastic element is provided between the elastic reset pressure columns and the discharge positive electrode sheet.

[0014] The present invention is further configured such that the cross-sectional shape of the adapter groove is circular, rectangular, or cross-shaped.

[0015] In summary, this utility model has the following beneficial effects: it limits the relative angle between the plug and socket during insertion, ensuring that positive terminals are connected to positive terminals and negative terminals to negative terminals during charging; it ensures that plugs of corresponding voltages can only be inserted into sockets of corresponding voltages, thereby eliminating safety hazards caused by users using the wrong charger during charging; it positions the positive and negative copper plates, preventing them from being pushed by friction during insertion; it restricts the positive and negative copper plates, preventing them from falling off or loosening before injection molding is completed; through the cooperation of the insertion plate and the insertion plate slot, it guides users to insert the plug at a specific angle for convenience, and further limits the relative angle between the plug and socket during connection; it disconnects the power supply from the stroller's control and execution circuits during charging, effectively preventing the stroller from being started while charging, further improving charging safety; and the elastic element stores the elastic potential energy when the positive electrode plate is tilted upwards during discharge and releases the elastic force when it springs back. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this application;

[0017] Figure 2 This is a schematic diagram of the plug structure of this application;

[0018] Figure 3 This is an exploded view of the plug in this application after concealing the injection-molded housing;

[0019] Figure 4 This is a schematic diagram of the socket structure in this application;

[0020] Figure 5 This is a partial sectional view of the socket in this application;

[0021] Figure 6 This is a schematic diagram showing the correspondence between different adapter slot shapes and voltages in this application.

[0022] Figure Descriptions: 1. Plug; 2. Socket; 3. Non-circular plug part; 4. Injection-molded shell; 5. Adapter slot; 6. Main assembly base; 7. Non-circular plug slot; 8. Adapter post; 9. Plug copper plate slot; 10. Positive copper plate; 11. Negative copper plate; 12. Positioning pin; 13. Positioning pin hole; 14. Assembly sleeve; 15. Insert plate; 16. Insert plate slot; 17. Spacer wall; 18. Power positive plate; 19. Charging negative plate; 20. Outer extension wall; 21. Discharge positive plate; 22. Connection window; 23. Conductive silver point; 24. Rear mounting cover; 25. Clamping plate; 26. Elastic reset pressure post; 27. Elastic element. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] A plug and socket structure for charging lithium batteries in an electric children's vehicle, such as... Figure 1 , Figure 2 , Figure 4 As shown, the device includes a plug 1 and a socket 2. The plug 1 is equipped with a wire for electrically connecting to a transformer charger. The socket 2 is fixedly installed on the stroller and connected to the stroller's power supply and control circuit. The plug 1 includes a non-circular plug part 3 and an injection-molded shell 4 that covers the rear section of the non-circular plug part 3. The front end face of the non-circular plug part 3 is provided with an adapter groove 5. The socket 2 includes a main mounting base 6 that is assembled on the stroller. The front end face of the main mounting base 6 is provided with a non-circular plug groove 7 for the non-circular plug part 3 to be inserted into. The bottom of the non-circular plug groove 7 is provided with an adapter post 8 that is adapted to the adapter groove 5 for insertion.

[0025] The plug 1 uses a non-circular plug part 3 to cooperate with the non-circular plug slot 7 of the socket 2, thereby limiting the relative angle between the plug 1 and the socket 2 when plugged in, so as to ensure that the positive terminal is connected to the positive terminal and the negative terminal is connected to the negative terminal when charging; the non-circular plug part 3 uses an adapter slot 5 to cooperate with the adapter post 8 of the non-circular plug slot 7, thereby ensuring that the plug 1 of the corresponding voltage can only be inserted into the socket 2 of the corresponding voltage, thereby eliminating the safety hazards caused by the user using the wrong charger when charging.

[0026] The specific conductive layout structure of the non-circular insertion part 3 is as follows: Figure 2 , Figure 3 As shown, the non-circular plug part 3 has a rectangular cross-section, and its upper and lower end faces are integrally formed with plug copper plate grooves 9. Positive copper plate 10 and negative copper plate 11 are respectively placed in the two plug copper plate grooves 9. By limiting the cross-sectional structure of the non-circular plug part 3 to a rectangle and setting plug copper plate grooves 9 on two opposite sides, the positive copper plate 10 and negative copper plate 11 can be effectively isolated and installed.

[0027] It should be noted that, as Figure 3 As shown, the bottom of the plug copper strip groove 9 is integrally formed with a positioning pin 12. The positive copper strip 10 and the negative copper strip 11 are provided with positioning pin holes 13 for the positioning pin 12 to be inserted. On the one hand, the installation position of the positive copper strip 10 and the negative copper strip 11 is positioned, and on the other hand, the positive copper strip 10 and the negative copper strip 11 are prevented from being pushed by friction during the insertion process.

[0028] After the positive copper sheet 10 and the negative copper sheet 11 are placed into the copper sheet groove 9 of the plug, an injection molded shell 4 needs to be formed through an injection molding process. To prevent the positive copper sheet 10 and the negative copper sheet 11 from falling off or loosening and shifting during the injection molding process, such as... Figure 2 , Figure 3 As shown, the non-circular insertion part 3 is sleeved and fixed with an assembly sleeve 14. The inner wall of the assembly sleeve 14 presses and fixes the positive copper sheet 10 and the negative copper sheet 11, thereby restricting the positive copper sheet 10 and the negative copper sheet 11 and preventing them from falling off or loosening and shifting before the injection molding is completed.

[0029] To further define the relative angle when plug 1 and socket 2 are connected, such as Figure 2 , Figure 3 , Figure 4 As shown, the front end face of the mounting sleeve 14 is integrally formed with a plug plate 15, and the front end face of the main mounting base 6 is provided with a plug plate groove 16 for the plug plate 15 to be inserted. There is a partition wall 17 between the plug plate groove 16 and the non-circular insertion groove 7. Through the cooperation of the plug plate 15 and the plug plate groove 16, on the one hand, it guides the user to insert the plug 1 at a specific angle to provide convenience, and on the other hand, it further limits the relative angle when the plug 1 and the socket 2 are connected.

[0030] The non-circular insertion slot 7 mates with the non-circular insertion part 3 through the following conductive layout structure, such as... Figure 4 As shown, the partition wall 17 is attached to and glued to the positive electrode plate 18 on one side of the non-circular insertion slot 7, and the groove wall of the non-circular insertion slot 7 is attached to and glued to the negative electrode plate 19; thus, the positive electrode plate 18 and the positive copper plate 10 are connected to conduct electricity, and the negative electrode plate 19 and the negative copper plate 11 are connected to conduct electricity.

[0031] To further improve charging safety, this application includes a design to prevent the stroller from starting while charging. The specific structure of this design is as follows: Figure 5 As shown, the main mounting base 6 has two symmetrically integrally formed outer extension walls 20 along both sides of the partition wall 17. A discharge positive electrode plate 21 is placed between the two outer extension walls 20. The discharge positive electrode plate 21 is electrically connected to the control circuit and execution circuit of the stroller, thereby introducing the discharge positive electrode circuit for starting the stroller to the socket 2. A grounding window 22 is opened through the partition wall 17. The discharge positive electrode plate 21 and the power positive electrode plate 18 are respectively provided with conductive silver points 23. The two conductive silver points 23 are connected to each other through the grounding window 22. The plug plate 15 is inserted into the plug plate slot 16 to shield the grounding window 22 and separate the two conductive silver points 23.

[0032] In the non-charging state, the two conductive silver points 23 of the discharge positive electrode 21 and the power positive electrode 18 are connected to each other, thereby conducting electricity between the power supply and the control circuit and execution circuit of the stroller. When charging is required, when the user inserts the plug 1 into the socket 2, the plug plate 15 is simultaneously inserted into the plug plate slot 16, thereby separating the two conductive silver points 23, and thus disconnecting the current conduction between the discharge positive electrode 21 and the power positive electrode 18, that is, disconnecting the power supply from the control circuit and execution circuit of the stroller, effectively preventing the stroller from being started in the charging state, and further improving charging safety.

[0033] It should be noted that, as Figure 5As shown, the two outer extension walls 20 are covered with rear mounting covers 24. The top surface of the rear mounting covers 24 is provided with a clamping plate 25. The clamping plate 25 presses the discharge positive electrode 21 tightly against the spacer wall 17. Under the premise of fixing the discharge positive electrode 21 with the rear mounting covers 24 and the clamping plate 25, the discharge positive electrode 21 is ensured to have sufficient tilting space, so that the discharge positive electrode 21 tilts up when the insert plate 15 is inserted, and the two conductive silver points 23 are separated.

[0034] This application utilizes the lifting and rebound of the discharge positive electrode 21 to achieve the disconnection and connection of the two conductive silver points 23. However, in practical applications, it has been found that if the discharge positive electrode 21 is made of copper with good conductivity, its elastic deformation capability is poor, and it cannot smoothly rebound and reset after multiple deformations or long-term deformations. Therefore, as Figure 5 As shown, the rear-mounted pressure cap 24 is integrally formed with an elastic reset pressure post 26. An elastic element 27 is provided between the elastic reset pressure post 26 and the discharge positive electrode plate 21. The elastic element 27 can be a compression spring or an elastic rubber block. In this embodiment, an elastic rubber block is used, so that the elastic element 27 can bear the storage of elastic potential energy when the discharge positive electrode plate 21 is tilted up and the release of elastic force when it bounces back.

[0035] like Figure 6 As shown, the specific shape and corresponding voltage of the adapter slot 5 in this embodiment are as follows: the cross-sectional shape of the adapter slot 5 is circular, rectangular or cross-shaped, where the circular shape corresponds to 24V, the cross-shaped shape with a flat width and a vertical narrowness corresponds to 12V, and the cross-shaped shape with a flat narrowness and a vertical width corresponds to 6V.

[0036] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. A plug and socket structure for charging a lithium battery in an electric stroller, comprising a plug (1) and a socket (2), wherein the plug (1) is provided with a wire for electrically connecting to a transformer charger, and the socket (2) is fixedly installed in the stroller and connected to the stroller's power supply and control circuit, characterized in that: The plug (1) includes a non-circular plug portion (3) and an injection-molded shell (4) that wraps around the rear section of the non-circular plug portion (3). The front end face of the non-circular plug portion (3) is provided with an adapter groove (5). The socket (2) includes a main mounting base (6) assembled on the stroller. The front end face of the main mounting base (6) is provided with a non-circular insertion groove (7) for the non-circular insertion part (3) to be inserted. The bottom of the non-circular insertion groove (7) is provided with an adapter post (8) that is adapted to be inserted into the adapter groove (5).

2. The plug and socket structure for charging a lithium battery of an electrically powered baby carriage according to claim 1, wherein: The non-circular plug part (3) has a rectangular cross-section, and its upper and lower end faces are respectively provided with plug copper plate slots (9). Positive copper plate (10) and negative copper plate (11) are respectively placed in the two plug copper plate slots (9). A positioning pin (12) is provided at the bottom of the plug copper plate slot (9), and the positive copper plate (10) and negative copper plate (11) are provided with positioning pin holes (13) for the positioning pin (12) to be inserted.

3. The plug and socket arrangement for electrically charging a lithium battery of a stroller for a child according to claim 2, wherein: The non-circular plug-in part (3) is fitted with an assembly sleeve (14) at the rear end, and the positive copper sheet (10) and the negative copper sheet (11) are pressed and fixed on the inner wall of the assembly sleeve (14).

4. The plug and socket arrangement for electrically charging a lithium battery of a stroller according to claim 3, wherein: The front end face of the assembly sleeve (14) is provided with an insert plate (15), and the front end face of the main assembly base (6) is provided with an insert plate groove (16) for inserting the insert plate (15). There is a partition wall (17) between the insert plate groove (16) and the non-circular insertion groove (7).

5. The plug and socket arrangement for electrically charging a lithium battery of a stroller according to claim 4, wherein: The partition wall (17) is provided with a power positive plate (18) on the side of the non-circular insertion slot (7), and a charging negative plate (19) is provided on the groove wall of the non-circular insertion slot (7) facing the power positive plate (18).

6. A plug and socket arrangement for electrically charging a lithium battery of a stroller according to claim 5, wherein: The main mounting base (6) has two symmetrically arranged outer extension walls (20) on both sides of the partition wall (17). A discharge positive electrode plate (21) is arranged between the two outer extension walls (20). The discharge positive electrode plate (21) is electrically connected to the control circuit and execution circuit of the stroller. A grounding window (22) is opened through the partition wall (17). Conductive silver points (23) are arranged opposite to the discharge positive electrode plate (21) and the power positive electrode plate (18). The two conductive silver points (23) are connected to each other through the grounding window (22). The insert plate (15) is inserted into the insert plate slot (16) to cover the grounding window (22) and separate the two conductive silver points (23).

7. The plug and socket structure for charging a lithium battery in an electric children's vehicle according to claim 6, characterized in that: The two outer extension walls (20) are covered with a rear mounting cover (24), and a pressing plate (25) is provided on the top surface of the rear mounting cover (24). The pressing plate (25) presses the discharge positive electrode plate (21) tightly against the spacer wall (17). The rear mounting cover (24) is provided with an elastic reset pressure post (26), and an elastic element (27) is provided between the elastic reset pressure post (26) and the discharge positive electrode plate (21).

8. The plug and socket structure for charging a lithium battery of a motorized child's vehicle according to claim 1, wherein: The cross-sectional shape of the adapter groove (5) is circular, rectangular, or cross-shaped.

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