Vehicle charger

Abstract

The utility model discloses a vehicle charger relates to vehicle charger technical field, this vehicle charger includes casing and negative pole subassembly, the casing surrounds and is formed with the cavity, be equipped with circuit board in the cavity, with the casing outside has the abutting face of the conductive ring to the cigarette lighter socket, the casing inside has with the abutting face along the first direction opposite setting mounting face, the casing is equipped with with the cavity intercommunication's avoidance mouth, negative pole subassembly has the mounting portion and elasticity, the mounting portion is fixed in mounting face, and is connected with circuit board electricity, the elasticity is connected in the mounting portion, and passes through the avoidance mouth and goes out outward, to be used for with cigarette lighter socket electricity connection. The utility model aims at reducing the space of negative pole subassembly.

Description

Technical Field

[0001] This utility model relates to the field of vehicle charger technology, and in particular to a vehicle charger. Background Technology

[0002] A car charger is a device that plugs into a car's cigarette lighter socket to provide a charging interface for other electronic products. For details on the structure of the cigarette lighter socket, please refer to [link / reference needed]. Figure 1 The inner wall of the cigarette lighter socket 200 is provided with a conductive sheet 201. The conductive sheet 201 is generally made of metal and has good conductivity and a certain mechanical strength to ensure stable power supply during vehicle operation. At the same time, the conductive sheet 201 protrudes from the opening of the cigarette lighter socket 200 and forms an exposed conductive ring 202 near the opening.

[0003] Existing car chargers typically have a negative electrode assembly on the side wall of the housing. This assembly includes a negative electrode tip and a contact spring. The negative electrode tip is movably inserted through the side wall of the housing and can move radially along the housing. Inside the housing, a contact spring abuts against the negative electrode tip. When the car charger is inserted into the cigarette lighter socket, the negative electrode tip moves inward, compressing the contact spring and causing elastic deformation. This elastic force from the contact spring ensures a tight fit between the negative electrode tip and the inner wall of the cigarette lighter socket, thus limiting and securing the charger and preventing it from falling out. Simultaneously, the negative electrode tip allows for electrical connection with a conductive plate.

[0004] However, since the negative electrode tip needs to move along the radial direction of the housing, sufficient space must be reserved inside the housing for movement. At the same time, the spring plate connects to the inner wall of the housing and abuts against the tip. The fixing and bending deformation of the spring plate both require radial space, resulting in the negative electrode tip and spring plate occupying a lot of space inside the housing. This will squeeze the layout space of other functional components, limit the miniaturization of the vehicle charger, and affect the overall design. Utility Model Content

[0005] This utility model proposes a vehicle charger, the vehicle charger comprising: A housing, the housing enclosing a cavity, the cavity containing a circuit board, and the exterior of the housing having a contact surface for a conductive ring facing a cigarette lighter socket, the interior of the housing having a mounting surface opposite to the contact surface along a first direction, and the housing having a clearance opening communicating with the cavity; and The negative electrode assembly has a mounting portion and an elastic portion. The mounting portion is fixed to the mounting surface and electrically connected to the circuit board. The elastic portion is connected to the mounting portion and extends outward through the clearance opening for electrical connection with the cigarette lighter socket.

[0006] The technical solution of this utility model involves providing an abutment surface corresponding to the conductive ring and a mounting surface opposite to the abutment surface along a first direction on the housing. The negative electrode assembly includes an interconnected mounting portion and an elastic portion. The mounting portion is fixed to the mounting surface on the inner wall of the housing, and the elastic portion extends outward through a clearance opening, protruding from the mounting surface, thereby electrically connecting with the conductive ring. This allows the mounting portion to be installed tightly against the mounting surface, while the elastic portion can deform along the first direction, thus not occupying excessive radial space and avoiding restrictions on the layout space of other components. Attached Figure Description

[0007] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0008] Figure 1 This is a structural diagram of a cigarette lighter socket; Figure 2 A schematic diagram of an embodiment of the vehicle charger provided by this utility model; Figure 3 A structural schematic diagram of an onboard charger from another perspective; Figure 4 An exploded view of a car charger; Figure 5 This is a partial structural diagram of the housing and negative electrode assembly in a vehicle charger. Figure 6 This is a schematic diagram of the casing in a vehicle charger.

[0009] Explanation of icon numbers: 100. Car charger; 1. Housing; 11. Insertion part; 110. Clearance opening; 111. Limiting opening; 112. Limiting component; 1121. Spring; 1122. Limiting element; 1123. Clearance part; 12. Connecting part; 121. Abutting surface; 122. Movable opening; 123. Charging interface; 124. Mounting slot; 125. Mounting surface; 13. Cavity; 14. Cover plate; 2. Negative electrode component; 21. Mounting part; 211. First part; 212. Second part; 22. Elastic part; 3. Magnetic component; 4. Circuit board; 5. Positive electrode head; 6. Positive electrode spring; 200. Cigarette lighter socket; 201. Conductive sheet; 202. Conductive ring.

[0010] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0011] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0012] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0013] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0014] This utility model proposes a vehicle charger 100; please refer to [link / reference needed]. Figures 1 to 6 In one embodiment of the present invention, the vehicle charger 100 includes a housing 1 and a negative electrode assembly 2. The housing 1 surrounds a cavity 13, and a circuit board 4 is disposed inside the cavity 13. The outer side of the housing 1 has an abutment surface 121 facing the conductive ring 202 of the cigarette lighter socket 200. The inner side of the housing 1 has a mounting surface 125 disposed opposite to the abutment surface 121 in a first direction. The housing 1 has a clearance opening 110 communicating with the cavity 13. The negative electrode assembly 2 has a mounting part 21 and an elastic part 22. The mounting part 21 is fixed to the mounting surface 125 and electrically connected to the circuit board 4. The elastic part 22 is connected to the mounting part 21 and extends outward through the clearance opening 110 for electrical connection with the cigarette lighter socket 200.

[0015] First, for ease of understanding, please refer to Figure 3 In the figure, the direction a1-a2 is the first direction, specifically, the direction of the axis of shell 1 is the first direction.

[0016] In this embodiment, the housing 1 has an abutment surface 121 corresponding to the conductive ring 202 and a mounting surface 125 disposed opposite to the abutment surface 121 along a first direction. The negative electrode assembly 2 includes a mounting portion 21 and an elastic portion 22 connected to each other. The mounting portion 21 is fixed to the mounting surface 125 on the inner wall of the housing 1, and the elastic portion 22 extends outward through the clearance opening 110, protruding from the mounting surface 125, thereby electrically connecting with the conductive ring 202. This allows the mounting portion 21 to be tightly fitted to the mounting surface 125, while the elastic portion 22 can deform along the first direction, thus not occupying excessive radial space and avoiding restrictions on the layout space of other components.

[0017] Optionally, the negative electrode component 2 can be made of conductive material, such as copper alloy, silver alloy, etc.

[0018] In one implementation, please refer to Figure 4 and Figure 5 The mounting part 21 includes a first part 211 and a second part 212. The first part 211 and the second part 212 are fixed to the mounting surface 125. The first part 211 and / or the second part 212 are electrically connected to the circuit board 4. The elastic part 22 is connected between the first part 211 and the second part 212.

[0019] In this embodiment, the negative electrode assembly 2 includes a first part 211, an elastic part 22 and a second part 212 connected in sequence. The first part 211 and the second part 212 are mounted on the mounting surface 125, and at least one of the first part 211 and the second part 212 is electrically connected to the circuit board 4. The elastic part 22 is movably inserted through the clearance opening 110 and protrudes from the abutment surface 121.

[0020] Understandably, the first part 211 and the second part 212 are positioned on opposite sides of the elastic part 22, providing the elastic part 22 with two stable support points and ensuring its stability during deformation and movement. Furthermore, when one of the first part 211 and the second part 212 is electrically connected to the circuit board 4, once the elastic part 22 abuts against the contact surface 121, the cigarette lighter socket 200 completes its electrical connection with the circuit board 4. Specifically, when the first part 211 is electrically connected to the circuit board 4, its length can be adjusted so that a portion protrudes from the mounting surface 125 and extends into the cavity 13. This ensures that after electrical connection with the circuit board 4, a certain space remains between the circuit board 4 and the mounting surface 125, guaranteeing a secure connection.

[0021] Optionally, both the first part 211 and the second part 212 can be electrically connected to the circuit board 4. If only one is electrically connected, a poor contact will prevent the cigarette lighter socket 200 from being electrically connected to the circuit board 4. Therefore, having both electrically connected to the circuit board 4 enhances the reliability of the connection.

[0022] Optionally, the first part 211, the elastic part 22, and the second part 212 are integrally formed, and the negative electrode component 2 can be a V-shaped or V-shaped metal spring.

[0023] In another embodiment, the mounting part 21 includes only the first part 211, in which the first part 211 is connected to the elastic part 22. The elastic part 22 moves only through the connection point between the first part 211 and the mounting surface 125 as a support point, so that the electrical connection between the circuit board 4 and the cigarette lighter socket 200 can also be realized.

[0024] In one implementation, please refer to Figure 4 The vehicle charger 100 also includes a limiting structure, which is located on the housing 1 and is used to limit the housing 1 to the cigarette lighter socket 200.

[0025] In this embodiment, when the elastic part 22 undergoes elastic deformation, the limiting structure prevents the elastic part 22 from returning to its original state. At the same time, the elastic force generated by the elastic part 22 ensures that the negative electrode component 2 and the conductive ring 202 are tightly connected together, thus ensuring the stability of the circuit connection.

[0026] In one implementation, please refer to Figure 2 and Figure 3 The limiting structure includes a magnetic component 3, which is disposed on the contact surface 121 and spaced apart from the negative electrode component 2. The magnetic component 3 is used to magnetically attract the conductive ring 202.

[0027] In this embodiment, the vehicle charger 100 and the cigarette lighter socket 200 are directly fixed together by the magnetic component 3 attracting the conductive ring 202, thereby achieving a limiting effect. It is understood that in the prior art, the negative electrode protrudes from the outer wall of the housing 1. When inserted into the cigarette lighter socket 200, the negative electrode needs to overcome significant elastic resistance to complete the insertion, making the insertion process difficult and reducing ease of use. In this solution, the negative electrode component 2 does not protrude from the side wall of the housing 1 along the radial direction, thus eliminating additional resistance. Simultaneously, the magnetic component 3 is positioned opposite the conductive ring 202, allowing it to directly attract the conductive ring 202 along the first direction without generating radial resistance, thereby improving the ease of insertion.

[0028] Understandably, this setup serves two purposes. First, it ensures that the negative electrode assembly 2 can be tightly connected to the conductive rings 202 of different sizes through magnetic attraction. Second, when the elastic part 22 is subjected to pressure and moves into the cavity 13, the height of the elastic part 22 protruding from the contact surface 121 will decrease until it is flush with the magnetic component 3. This allows the magnetic component 3 and the negative electrode assembly 2 to simultaneously contact the conductive ring 202, thus ensuring the stability of both the physical and electrical connections.

[0029] Optionally, the magnetic component 3 can be a permanent magnet, such as a natural magnet or a man-made magnet.

[0030] Optionally, the limiting structure can also be a buckle set on the abutment surface 121, and the cigarette lighter socket 200 is provided with a corresponding slot. By cooperating with the buckle and the slot, the housing 1 is directly limited to the inside of the cigarette lighter socket 200. The buckle connection method is quite common and will not be described in detail here.

[0031] Furthermore, to ensure the stability of the magnetic component 3 during installation, in one embodiment, please refer to... Figure 6 The contact surface 121 has a mounting groove 124 recessed towards the mounting surface 125, and the magnetic component 3 is installed in the mounting groove 124.

[0032] In one implementation, please refer to Figure 3 Both the negative electrode component 2 and the magnetic component 3 protrude from the contact surface 121 in the first direction, and the protrusion height of the negative electrode component 2 in the first direction is greater than the protrusion height of the magnetic component 3 in the first direction.

[0033] In this embodiment, the height of the elastic part 22 protruding from the contact surface 121 in the negative electrode assembly 2 is greater than the height of the magnetic part 3 protruding from the contact surface 121, thereby ensuring that the elastic part 22 can preferentially contact the conductive ring 202 to form an electrical connection, while the magnetic part 3 provides an adsorption force at a later position to enhance the stability of the connection.

[0034] Optionally, the protrusion height of the elastic part 22 can be adjusted within the range of 2 mm to 5 mm according to actual needs, while the protrusion height of the magnetic part 3 can be controlled within the range of 1 mm to 3 mm. After the connection is completed, the elastic part 22 is connected to the conductive ring 202, and the distance between the magnetic part 3 and the conductive ring 202 is very small. At this time, a sufficiently large attraction force can be generated between the magnetic part 3 and the conductive ring 202 to limit the on-board charger 100 along the axial direction.

[0035] In one implementation, please refer to Figure 2 and Figure 3The housing 1 includes an insertion part 11 and a connecting part 12. The connecting part 12 has an abutment surface 121, and the insertion part 11 protrudes from the abutment surface 121. The interiors of the insertion part 11 and the connecting part 12 fit together to form a cavity 13. A positive electrode head 5 is provided on the side of the insertion part 11 facing away from the abutment surface 121, and the positive electrode head 5 is electrically connected to the circuit board 4. The connecting part 12 also has a charging interface 123, through which other electronic devices are electrically connected to the circuit board 4. The insertion part 11 is inserted into the interior of the cigarette lighter socket 200 so that the connecting part 12 abuts against the conductive ring 202 through the abutment surface 121.

[0036] In this embodiment, the housing 1 includes two parts: an insertion part 11 and a connecting part 12, which are integrally formed. The insertion part 11 protrudes from the abutment surface 121 of the connecting part 12, and the two together form a cavity 13 to accommodate the circuit board 4.

[0037] Preferably, to facilitate the installation of the circuit board 4 into the cavity 13, the connecting part 12 has an opening on the side away from the insertion part 11, and the opening communicates with the cavity 13. The housing 1 also includes a cover plate 14 that is detachably connected to the connecting part 12. After the circuit board 4 is installed, the cover plate 14 is used to cover the opening of the connecting part 12.

[0038] In this embodiment, a positive electrode head 5 is also installed on the side of the insertion part 11 away from the connecting part 12. The positive electrode head 5 is connected to the circuit board 4 through a positive electrode spring 6 and is used to establish an electrical connection with the conductive sheet 201 inside the cigarette lighter socket 200. This structure is common in the prior art and will not be described in detail here. At the same time, the connecting part 12 is also provided with a charging interface 123, which can be used for charging of other electronic devices. When the car charger 100 is inserted into the cigarette lighter socket 200, the insertion part 11 enters the interior of the cigarette lighter socket 200, and the contact surface 121 of the connecting part 12 fits tightly with the conductive ring 202, ensuring the stability of the electrical connection between the negative electrode assembly 2 and the conductive ring 202.

[0039] Understandably, the size of the insertion part 11 generally needs to be adapted to the size of the cigarette lighter socket 200 to ensure that the contact surface 121 of the connection part 12 can contact the conductive ring 202. As for the specific size, it can be adjusted according to the actual situation.

[0040] Optionally, multiple charging ports 123 can be provided, and these ports 123 can be located on the side wall of the connecting part 12 or on the cover plate 14. When the charging port 123 is located on the side wall of the connecting part 12, the wiring direction of other electronic devices is perpendicular to the central axis of the vehicle charger 100; when the charging port 123 is located on the cover plate 14, the wiring direction of other electronic devices is parallel to the central axis of the vehicle charger 100.

[0041] Optionally, the charging port 123 can adopt a variety of common interface types such as USB-A, USB-C, and Type-C to adapt to the charging needs of different electronic devices.

[0042] In one implementation, please refer to Figure 2 and Figure 3 The limiting structure also includes a limiting component 112, which is disposed on the housing 1. The limiting component 112 is capable of limiting the housing 1 in the radial direction.

[0043] In this embodiment, when the vehicle charger 100 is inserted into the cigarette lighter socket 200, the limiting component 112 can make close contact with the inner wall of the cigarette lighter socket 200, thereby forming a radial limit on the housing 1.

[0044] Understandably, the limiting component 112 is used to assist in limiting the magnetic component 3. Since the limiting component 112 only plays an auxiliary limiting role, the height of the limiting component 112 protruding from the side wall of the housing 1 in the radial direction of the housing 1 does not need to be particularly high, so it will not affect the insertion of the vehicle charger 100.

[0045] Optionally, if the magnetic force of the magnetic component 3 is strong enough, the limiting component 112 may not be necessary. Alternatively, only the limiting component 112 may be provided without the magnetic component 3, in which case the limiting component 112 will limit the movement of the device by means of the inner wall of the cigarette lighter socket 200.

[0046] Optionally, the limiting component 112 can be an elastic limiting block or an adjustable limiting ring. The elastic limiting block is initially slightly larger than the inner diameter of the cigarette lighter socket 200. It is compressed during insertion and returns to its original shape after entering the cigarette lighter socket 200, thus achieving a tight fit and limiting effect. Alternatively, the adjustable limiting ring allows the user to manually adjust its diameter according to the inner diameter of the cigarette lighter socket 200, directly achieving the limiting effect.

[0047] In one implementation, please refer to Figure 6 The limiting component 112 includes a spring piece 1121 and a limiting member 1122. The spring piece 1121 is located in the clearance opening 110 and is located on the side of the negative electrode component 2 facing away from the contact surface 121 in the first direction. The limiting member 1122 is provided at the end of the spring piece 1121 near the negative electrode component 2 and protrudes from the side of the spring piece 1121 facing away from the cavity 13. The limiting member 1122 is used to abut against the inside of the cigarette lighter socket 200.

[0048] In this embodiment, one end of the spring piece 1121 is fixed to the side wall of the housing 1, and the other end extends toward the elastic part 22. The limiting member 1122 is installed on the spring piece 1121 and partially extends out of the outer wall of the housing 1 to abut against the conductive piece 201 of the cigarette lighter socket 200. When the vehicle charger 100 is inserted into the cigarette lighter socket 200, the spring piece 1121 is squeezed by the inner wall of the cigarette lighter socket 200, undergoes elastic deformation, and drives the limiting member 1122 to retract into the housing 1. Once inserted into place, the spring piece 1121 tends to recover its deformation, pushing the limiting member 1122 to fit tightly against the inner wall of the cigarette lighter socket 200, thereby achieving the limiting effect.

[0049] In this embodiment, the housing 1, the spring piece 1121, and the limiting member 1122 are integrally formed.

[0050] Optionally, the limiting component 1122 can also be manufactured separately and bonded to the spring 1121. The limiting component 1122 can be made of rubber material to avoid excessive friction between the limiting component 112 and the inner wall of the cigarette lighter socket 200.

[0051] In one implementation, please refer to Figure 2 and Figure 6 The clearance 110 includes a movable opening 122 and a limiting opening 111 that are interconnected. The movable opening 122 is opened on the contact surface 121, and the elastic part 22 is movably inserted through the movable opening 122. The limiting opening 111 is opened on the outer wall of the housing 1, and the spring piece 1121 is located in the limiting opening 111. The extending direction of the spring piece 1121 is exactly parallel to the moving direction of the negative electrode component 2.

[0052] In this embodiment, the movable opening 122 and the limiting opening 111 are interconnected on the housing 1, forming a clearance opening 110, which is located at the connection between the insertion part 11 and the connecting part 12. This arrangement ensures sufficient movement space for both the elastic part 22 and the spring piece 1121, while simplifying mold making during production by eliminating the need for excessive holes in the mold. Furthermore, the spring piece 1121 is positioned close to the abutment surface 121 at the angle between the two surfaces, preventing other objects from contacting it and reducing the impact of the external environment on the spring piece 1121.

[0053] Optionally, the movable port 122 and the limiting port 111 can also be staggered along the circumferential direction of the housing 1. In this case, the movable port 122 and the limiting port 111 in each clearance port 110 are independent of each other, so that the elastic part 22 and the spring piece 1121 can also have sufficient room for movement.

[0054] In one implementation, please refer to Figure 5The side of the spring piece 1121 away from the negative electrode assembly 2 is connected to the side wall of the housing 1, and the side of the spring piece 1121 near the negative electrode assembly 2 has a relief portion 1123 recessed into the cavity 13.

[0055] In this embodiment, the side of the spring piece 1121 near the negative electrode component 2 is inclined into the cavity 13, forming a clearance part 1123, thereby reserving space for the movement of the negative electrode component 2, so that when the negative electrode component 2 contacts the conductive ring 202 and undergoes elastic deformation, it will not be obstructed by the spring piece 1121, ensuring that the negative electrode component 2 can freely extend and retract.

[0056] In one implementation, please refer to Figure 3 and Figure 4 The limiting component 112 includes two components, which are symmetrically arranged on opposite sides of the housing 1.

[0057] In this embodiment, two limiting components 112 are symmetrically installed on opposite sides of the housing 1, so that when the vehicle charger 100 is inserted into the cigarette lighter socket 200, it can be uniformly limited by both sides, thereby achieving more stable positioning in the radial direction.

[0058] In one implementation, please refer to Figure 2 and Figure 4 The magnetic component 3 and the negative electrode component 2 each include two, and are staggered along the circumference of the housing 1.

[0059] In this embodiment, there are two magnetic components 3 and two negative electrode components 2, which are staggered along the circumferential direction of the housing 1, so that the contact surface 121 can be evenly stressed, preventing local wear caused by concentrated stress. At the same time, it also allows the adsorption force of the magnetic component 3 to act more evenly on the conductive ring 202, further improving the stability of the connection.

[0060] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An in-vehicle charger characterized by comprising: The on-board charger includes: A housing, the housing enclosing a cavity, the cavity containing a circuit board, and the exterior of the housing having a contact surface for a conductive ring facing a cigarette lighter socket, the interior of the housing having a mounting surface opposite to the contact surface along a first direction, and the housing having a clearance opening communicating with the cavity; and The negative electrode assembly has a mounting portion and an elastic portion. The mounting portion is fixed to the mounting surface and electrically connected to the circuit board. The elastic portion is connected to the mounting portion and extends outward through the clearance opening for electrical connection with the cigarette lighter socket.

2. The on-board charger of claim 1, wherein, The mounting portion includes a first part and a second part, the first part and the second part are fixed to the mounting surface, the first part and / or the second part are electrically connected to the circuit board, and the elastic part is connected between the first part and the second part.

3. The on-board charger of claim 2, wherein, The vehicle charger also includes a limiting structure, which is disposed on the housing and used to limit the housing to the cigarette lighter socket.

4. The on-board charger of claim 3, wherein, The limiting structure includes a magnetic component, which is disposed on the contact surface and spaced apart from the negative electrode assembly. The magnetic component is used to magnetically attract the conductive ring.

5. The vehicle charger of claim 4, wherein, Both the negative electrode component and the magnetic component protrude from the contact surface in the first direction, and the protrusion height of the negative electrode component in the first direction is greater than the protrusion height of the magnetic component in the first direction.

6. The vehicle charger of claim 4, wherein, The contact surface has a mounting groove that is recessed towards the mounting surface, and the magnetic component is installed in the mounting groove.

7. The vehicle charger of claim 3, wherein, The limiting structure further includes a limiting component, which is disposed in the housing; The limiting component is capable of limiting the housing along the radial direction of the housing.

8. The vehicle charger of claim 7, wherein, The limiting component includes: A spring clip, the spring clip being located in the clearance opening, and the spring clip being located on the side of the negative electrode assembly facing away from the contact surface in the first direction; and A limiting member is provided at one end of the spring piece near the negative electrode assembly and protrudes from the side of the spring piece away from the cavity. The limiting member is used to abut against the inside of the cigarette lighter socket.

9. The vehicle charger of claim 4, wherein, Both the magnetic component and the negative electrode assembly are in pairs and are staggered along the circumference of the housing.

10. The vehicle charger of any one of claims 1 to 9, wherein, The housing includes an insertion part and a connecting part, the connecting part having the abutting surface, the insertion part protruding from the abutting surface, and the interior of the insertion part and the connecting part fitting together to form the cavity; The insertion part has a positive electrode head on the side opposite to the contact surface, and the positive electrode head is electrically connected to the circuit board; the connection part also has a charging interface, through which other electronic devices are electrically connected to the circuit board. The insertion part is inserted into the interior of the cigarette lighter socket so that the connecting part abuts against the conductive ring through the contact surface.

Images