CN220964355U - Vehicle-mounted charging device - Google Patents

Abstract

The utility model is suitable for the technical field of charging equipment, and provides a vehicle-mounted charging device which comprises a main body part, a winding mechanism, a charging wire and a fixed connecting plate. The main body part is also internally provided with a fixed connecting plate and a rotating connecting plate, wherein the rotating connecting plate is connected with a winding roll of the winding mechanism and can rotate along with the winding roll, and the rotating connecting plate is also provided with a conductive part. The fixed connection plate is electrically connected with the element in the plug, and a conductive piece is also arranged on the fixed connection plate and abuts against the conductive part on the rotary connection plate. At this time, no matter when the winding roll rotates or stands still, the connection between the rotating connecting plate and the fixed connecting plate can be ensured to be smooth through the conductive piece and the conductive part. The risk of disconnection of the charging wire from the plug due to rotation of the winding drum is reduced to some extent. On the basis of guaranteeing that the charging wire is accomodate and is put in order convenient, make internal circuit connect safer stable.

Description

Vehicle-mounted charging device

Technical Field

The utility model belongs to the technical field of charging equipment, and particularly relates to a vehicle-mounted charging device.

Background

The vehicle-mounted charging device is a fitting for conveniently charging a digital product by a vehicle-mounted power supply at any time and any place, and is widely applied to the field of battery charging of various portable and handheld devices. In the prior art, for convenience in use, the length of the charging wire is generally made to be adjustable, that is, a winding mechanism is arranged in the vehicle-mounted charging device, and the charging wire is wound on the winding mechanism. When the charging device is used, the charging wire with the corresponding length can be pulled out according to the distance between the equipment and the vehicle-mounted charging device, and the charging wire can be retracted back into the vehicle-mounted charging device under the action of the winding mechanism after charging is completed, so that the charging wire can be conveniently stored and tidied. However, the conventional vehicle-mounted charging device has a problem that the internal circuit connection is unstable in use.

Disclosure of utility model

The utility model aims to provide a vehicle-mounted charging device, which aims to solve the technical problem that the connection of internal circuits of the vehicle-mounted charging device in the prior art is unstable when the vehicle-mounted charging device is used.

The present utility model is achieved by a vehicle-mounted charging device comprising:

a main body part provided with a plug for connecting with an automobile power supply interface;

The winding mechanism is arranged in the main body part and comprises a winding roll and a rotating connecting plate, the winding roll is rotatably arranged in the main body part, the rotating connecting plate is connected with the winding roll and can rotate together with the winding roll, and the rotating connecting plate is also provided with a conductive part;

A charging wire, a first end of which is wound around a circumference of the winding roll and is electrically connected with the conductive part, and a second end of which is located outside the main body part;

The fixed connection board is arranged inside the main body part and electrically connected with the plug, and a conductive piece is arranged on the fixed connection board and is electrically connected with the conductive part in a sliding way.

In an alternative embodiment, the conductive portion is of annular configuration and is disposed coaxially with the winding reel.

In an alternative embodiment, the number of the conductive parts and the number of the conductive pieces are plural, and two adjacent conductive parts are arranged at intervals.

In an alternative embodiment, a fixing support frame for installing and fixing the fixing connection plate is further arranged in the main body portion, a mounting structure is further arranged on the fixing support frame, and the fixing connection plate is connected with the fixing support frame through the mounting structure.

In an alternative embodiment, the mounting structure comprises a plurality of fixed inserting posts arranged on the fixed supporting frame, a plurality of inserting holes matched with the positions of the fixed inserting posts are formed in the fixed connecting plate, and the fixed inserting posts are matched with the inserting holes in an inserting mode.

In an alternative embodiment, the fixed support frame is further provided with a plurality of limit stops, the limit stops are arranged at intervals, the limit stops are enclosed to form an installation area, and the fixed connection plate is installed in the installation area.

In an alternative embodiment, the plug includes a driving circuit board, an elastic pin and a connection spring, where the driving circuit board is electrically connected to the fixed connection board, the driving circuit board is installed and fixed on the fixed support frame, the connection spring and the elastic pin are both provided with contacts for electrically contacting with the power supply interface, and the connection spring and the elastic pin are both electrically connected to the driving circuit board, so as to connect the driving circuit board with the power supply interface.

In an alternative embodiment, a rotating shaft for installing the winding roll is further arranged in the main body part, a rotating hole is formed in the winding roll, the rotating shaft is inserted into the rotating hole, and a reset elastic piece is arranged between the rotating shaft and the winding roll.

In an alternative embodiment, a limiting structure is further disposed on the main body, and the limiting structure is used for limiting the winding roll in a preset active area.

In an alternative embodiment, the limit structure comprises a swing buckle arranged in the main body part, one end of the swing buckle is rotationally connected with the main body part, and a limit chute matched with the other end of the swing buckle is arranged on the winding roll.

Compared with the prior art, the utility model has the technical effects that: the main body part is mutually spliced with a power supply interface on the automobile through the plug, and a winding mechanism is further arranged in the main body part, so that the charging wires can be conveniently stored and tidied. Meanwhile, a fixed connecting plate and a rotary connecting plate are arranged in the main body part, wherein the rotary connecting plate is connected with a winding roll of the winding mechanism and can rotate along with the winding roll, and a conductive part is further arranged on the rotary connecting plate. The fixed connection plate is electrically connected with the element in the plug, and a conductive piece is also arranged on the fixed connection plate and abuts against the conductive part on the rotary connection plate. At this time, no matter when the winding roll rotates or stands, the connection of the circuit between the charging wire and the plug can be ensured through the sliding butt joint of the conductive piece and the conductive part. Compared with the vehicle-mounted charging device in the prior art, the risk of disconnection of the charging wire from the plug caused by rotation of the winding drum is reduced to a certain extent. On the basis of guaranteeing that the charging wire is accomodate and is put in order convenient, make this on-vehicle charging device's internal circuit connect safer stable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the embodiments of the present utility model or the drawings used in the description of the prior art, and it is obvious that the drawings described below are only some embodiments of the present utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a vehicle-mounted charging device according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of an explosion structure of a vehicle-mounted charging device according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a rotary connection plate and a winding mechanism according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a structure of a rotary connecting plate and a fixed support frame according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a plug and a fixed support frame according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of an exploded view of a winding mechanism employed in an embodiment of the present utility model;

Fig. 7 is a schematic structural diagram of a limiting structure according to an embodiment of the present utility model.

Reference numerals illustrate:

1. A main body portion; 2. a winding mechanism; 21. a winding roll; 22. rotating the connecting plate; 23. a conductive portion; 24. a rotating shaft; 25. a return elastic member; 26. mounting a shell; 3. fixing the connecting plate; 4. a conductive member; 5. fixing the supporting frame; 6. a mounting structure; 61. a limit stop; 62. fixing the inserted column; 7. a plug; 71. a driving circuit board; 72. an elastic pin; 73. a connecting spring plate; 8. a limit structure; 81. swing buckle; 82. limiting sliding grooves; 9. and a charging wire.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent.

Referring to fig. 1 to 7, in an embodiment of the present utility model, there is provided a vehicle-mounted charging device including a main body 1, a winding mechanism 2, a charging wire, and a fixed connection plate 3. The main body 1 has a plug 7 for connecting to an automobile power supply interface. The winding mechanism 2 is arranged in the main body part 1, the winding mechanism 2 comprises a winding roll 21 and a rotary connecting plate 22, the winding roll 21 is rotatably arranged in the main body part 1, the rotary connecting plate 22 is connected with the winding roll 21 and can rotate along with the winding roll 21, and the rotary connecting plate 22 is also provided with a conductive part 23. The first end of the charging wire is wound around the winding drum 21, and the first end is electrically connected to the conductive portion 23, and the second end of the charging wire is located outside the main body portion 1. The fixed connection board 3 is arranged inside the main body part 1 and is electrically connected with the plug 7, the fixed connection board 3 is provided with a conductive piece 4, and the conductive part 23 of the conductive piece 4 is in sliding connection and is used for electrically communicating the fixed connection board 3 with the conductive part 23.

The main body 1 is a thin-walled member having an installation space therein, and at least a portion of the main body 1 is formed in a shape that matches with an automobile power supply interface, and an electrical component constituting plug 7 is provided in the portion.

The charging wire is a circuit for charging the mobile equipment, and a plug-in structure matched with the charging equipment is arranged at the end part of the charging wire. The charging wire may be a USB data wire, a Type C data wire, or a lighting data wire; and the device can also be a plurality of data lines, so that the charging requirements of different devices can be met.

The winding mechanism 2 is a component capable of adjusting the length of the charging wire outside the main body 1, and the charging wire is wound on a winding roll 21 capable of automatically resetting, and is retracted and wound when the charging wire is not stressed.

The rotating connection plate 22 refers to a plate-like member having a certain thickness, and a conductive portion 23 is further provided on the rotating connection plate 22. The rotary connecting plate 22 may be a circuit board, the end of the charging wire is connected to the circuit board, the conductive part 23 may be a metal layer printed on the surface of the circuit board, and the conductive part 23 forms a structure commonly called a golden finger on the rotary connecting plate 22; of course, the rotary connection plate 22 and the conductive portion 23 may be other structures for realizing connection with the charging wire according to specific situations and requirements, which is not limited herein.

The fixed connection plate 3 also refers to a plate-like member having a certain thickness, which serves to provide support for the installation of the conductive element 4. For facilitating the structural connection of the conductive element 4 at the plug 7, the fixing connection board 3 is generally a circuit board, but other structures can be adopted. The conductive element 4 can be directly connected with a printed circuit on the circuit board; it is also possible to mount a plurality of conductive members 4 on one block member to form an assembly, and then integrally mount the assembly on the fixed connection plate 3, so that the conductive members 4 are more convenient to mount.

According to the vehicle-mounted charging device provided by the embodiment of the utility model, the main body part 1 is mutually spliced with the power supply interface of the automobile through the plug 7, and the winding mechanism 2 is further arranged in the main body part 1, so that the charging wires can be conveniently stored and arranged. Meanwhile, a fixed connection plate 3 and a rotary connection plate 22 are also arranged in the main body part 1, wherein the rotary connection plate 22 is connected with a winding roll 21 of the winding mechanism 2 and can rotate along with the winding roll 21, and a conductive part 23 is also arranged on the rotary connection plate 22. The fixed connection plate 3 is electrically connected with the elements in the plug 7, and the fixed connection plate 3 is also provided with a conductive piece 4, and the conductive piece 4 abuts against a conductive part 23 on the rotating connection plate 22. At this time, the connection between the charging wire and the plug 7 can be ensured by the sliding contact between the conductive member 4 and the conductive portion 23, both when the winding drum 21 rotates and stands. The risk of disconnection of the charging wire from the plug 7 due to rotation of the winding drum 21 is reduced to some extent compared to prior art vehicle-mounted charging devices. On the basis of guaranteeing that the charging wire is accomodate and is put in order convenient, make this on-vehicle charging device's internal circuit connect safer stable.

In one embodiment, as shown in fig. 3 and 6, the conductive portions 23 are all in a ring structure, and the conductive portions 23 are disposed coaxially with the winding reel 21. Specifically, the conductive portions 23 are all in a ring-shaped structure, which means that the conductive portions 23 are in a ring-shaped region having a certain width. The conductive part 23 adopts an annular structure, and the circle center positions of the annular structure are coincident with the positions of the rotating axes of the winding roll 21, so that the conductive part 23 and the conductive piece 4 are always in mutual interference to keep the communication of a circuit when the rotating connecting plate 22 rotates along with the winding roll 21.

In addition to the above-described characteristic conductive portions 23, as shown in fig. 3 and 6, the number of conductive portions 23 and conductive members 4 is plural, and two adjacent conductive portions 23 are each disposed at a distance from each other. Specifically, the number of the conductive parts 23 and the conductive parts 4 is multiple, so that the arrangement requirement of the internal circuit of the charging device can be met, and the internal circuit of the charging device is more reasonable and convenient to arrange. Simultaneously, two adjacent conductive parts 23 are arranged at intervals, so that the risk of short circuit caused by mutual contact of the two conductive parts 23 can be reduced to a certain extent, the safety of connection between the rotary connecting plate 22 and the fixed connecting plate 3 is improved, and the charging device is more reliable to use.

In an alternative embodiment, as shown in fig. 3 and 4, the conductive member 4 comprises an elastic sheet. Specifically, the elastic sheet body refers to a thin-walled member having a certain elasticity. The conductive element 4 adopts an elastic sheet body, so that the manufacturing cost of the conductive element 4 can be reduced. Meanwhile, the elastic sheet body has certain elasticity, so that the elastic sheet body always abuts against the conductive part 23 on the rotary connecting plate 22, and the risk that the conductive piece 4 is separated from the conductive part 23 when the position of the conductive part 23 changes can be avoided to a certain extent.

A bending part is also arranged at one end of the elastic sheet body close to the conductive part 23, and the bending part is abutted against the conductive part 23. Specifically, by providing the bending part, the contact part between the elastic sheet body and the conductive part 23 can be smoother, and the friction force between the elastic sheet body and the conductive part 23 is reduced. Meanwhile, the bending part can also avoid the conductive part 23 from being scratched and damaged to a certain extent due to the too sharp end part of the elastic sheet body.

In another alternative embodiment, the conductive portion 23 may be provided on the rotational connection plate 22 at a position coinciding with the rotational axis of the winding drum 21. Thus, the position of the conductive part 23 can be kept unchanged all the time when the rotary connecting plate 22 rotates, and the conductive part 23 can be kept in abutting contact with the conductive piece 4 when the winding roll 21 and the rotary connecting plate 22 rotate, so that the circuit can be communicated no matter when the winding roll 21 rotates or stands still.

In one embodiment, as shown in fig. 2, 4 and 5, a fixing support 5 for mounting and fixing the fixing connection board 3 is further provided in the main body 1, and a mounting structure 6 is further provided on the fixing support 5, and the fixing connection board 3 is connected to the fixing support 5 through the mounting structure 6. Specifically, the fixed support 5 is a member having a certain volume, and the fixed support 5 may be any one of a plate shape, a block shape, a tubular shape, and the like, or may be a combination of a plurality of shapes. The mounting structure 6 is a structure provided on the fixing support 5 for fixing the fixing connection plate 3. The mounting structure 6 may be any of a receiving hole, a receiving slot, or a compression structure. The fixing support 5 may be first connected to the inner wall of the main body 1 by means of a fastener or a snap-fit, and then the fixing connection plate 3 is fixed to the fixing support 5 by means of the mounting structure 6. The fixed support 5 and the installation structure 6 can facilitate the installation of the fixed connection plate 3 and are also firmer and more reliable.

In one embodiment, as shown in fig. 4, the mounting structure 6 includes a plurality of fixed posts 62 disposed on the fixed support frame 5, and the fixed connection plate 3 is provided with a plurality of plug holes matched with the positions of the fixed posts 62, and the fixed posts 62 are mutually plug-fitted with the plug holes. Specifically, the fixed plug post 62 is a columnar member with a certain height on the fixed support frame 5, the fixed plug post 62 and the plug hole are mutually matched in a plug way, when the fixed connection plate 3 is installed on the fixed support frame 5, the fixed connection plate 3 is installed by inserting the fixed plug post 62 into the plug hole and realizing the plug matching of the fixed plug post 62 and the plug hole, so that the fixed connection plate 3 is more convenient to install.

In one embodiment, as shown in fig. 4, the fixed support frame 5 is further provided with a plurality of limit stops 61, the plurality of limit stops 61 are spaced from each other, the plurality of limit stops 61 are enclosed into a mounting area, and the shape of the mounting area is matched with the shape of the fixed connection board 3. Specifically, the limit stopper 61 is a block member having a certain volume, and a plurality of limit stoppers 61 are provided on the side surface of the fixed stay 5 that contacts the fixed connection plate 3. The plurality of limit stops 61 enclose a mounting area, within which the fastening web 3 is arranged, wherein the fastening studs 62 are also arranged. The fixing web 3 is mounted and fixed such that the fixing web 3 is mounted in the mounting region and the limit stops 61 each rest against a side face of the fixing web 3. The stop block 61 is used for blocking and positioning the fixed connecting plate 3, so that the installation position of the fixed connecting plate 3 is more accurate, and meanwhile, the fixed connecting plate 3 can be prevented from shaking to a certain extent.

In one embodiment, as shown in fig. 2 and 5, the plug 7 includes a driving circuit board 71, an elastic pin 72 and a connecting spring piece 73, the driving circuit board 71 is electrically connected to the fixed connection board 3, and the driving circuit board 71 is mounted and fixed on the fixed support frame 5. The connection spring plate 73 and the elastic pin 72 are electrically connected with the driving circuit board 71, so as to connect the driving circuit board 71 with the power supply interface, and the connection spring plate 73 and the elastic pin 72 are provided with contacts for electrically contacting with the power supply interface. Specifically, the plug 7 matched with the automobile power supply interface in shape is further arranged on the main body part 1, the driving circuit board 71 is arranged in the plug 7, a charging through hole is further formed in the side wall of the plug 7, and the elastic pin 72 and the charging end of the connecting elastic piece 73 extend out of the main body part 1 through the charging through hole to be in contact with the wire part in the automobile power supply interface for charging, so that the whole plug 7 is more convenient to use. Meanwhile, the driving circuit board 71 is also fixed on the fixed supporting frame 5, so that the driving circuit board 71 can be more firmly installed.

In an alternative embodiment, as shown in fig. 1, a limiting cylinder part is further provided on the fixed support frame 5, a limiting clamping groove is provided on the inner wall of the limiting cylinder part, the end part of the driving circuit board 71 is clamped in the limiting cylinder part, and the side surface of the driving circuit board 71 is clamped in the limiting clamping groove, so that the fixing is firmer.

In another alternative embodiment, as shown in fig. 5, the connection spring 73 is an integrally U-shaped elastic sheet, the middle part of the connection spring 73 is connected to the driving circuit board 71, two contact protrusions are respectively disposed on two sides of the elastic sheet, and the contact protrusions extend to the outside of the main body 1 through the charging via hole. The elastic pin 72 includes a conductive cylinder and a conductive elastic member, and the conductive cylinder is connected to the driving circuit board 71 through the conductive elastic member.

In one embodiment, as shown in fig. 6, a rotation shaft 24 for mounting the winding roll 21 is further provided in the main body 1, a rotation hole is provided in the winding roll 21, the rotation shaft 24 is inserted in the rotation hole, and a reset elastic member 25 is further provided between the rotation shaft 24 and the winding roll 21. Specifically, the rotation shaft 24 is inserted into the rotation hole on the winding roll 21, so that the winding roll 21 can be more firmly installed, and the setting of the reset elastic piece 25 can enable the winding roll 21 to return to the initial position when no external force is applied, so that the charging wire can be conveniently retracted into the main body part 1 along with the rotation of the winding roll 21.

In an alternative embodiment, as shown in fig. 6, the reset elastic member 25 is a winding drum wound around the circumference of the rotating shaft 24, a fixing slit for fixing one end of the winding drum is further provided on the rotating shaft 24, and the other end of the winding drum is fixed on the winding drum 21, so that the rotating shaft 24 of the winding drum 21 can be reset under the action of the winding drum.

In another alternative embodiment, as shown in fig. 6, a mounting housing 26 is also provided on the outside of the winding reel 21. Specifically, the winding roll 21, the rotating shaft 24 and the reset elastic member 25 are all disposed inside the mounting housing 26, and a yielding hole is further disposed on the mounting housing 26, and the rotating connection plate 22 is connected with the winding roll 21 through the yielding hole. The installation of the installation shell 26 can enable the winding mechanism 2 to form an independent component, so that the installation of the whole winding mechanism 2 is more convenient and quick, and the production efficiency of the whole vehicle-mounted charging device can be improved.

In one embodiment, as shown in fig. 6 and 7, a limiting structure 8 is further disposed between the inner wall of the main body 1 and the winding roll 21, and the limiting structure 8 limits the winding roll 21 in a preset active area. Specifically, the limit structure 8 is a component that can fix the position of the winding roll 21. And the limit structure 8 is arranged between the inner wall of the mounting housing 26 and the winding reel 21 when the mounting housing 26 is present. The setting of limit structure 8 can be when using with the fixed position of take-up reel 21, makes the length that the charging wire stretches out maintain a fixed numerical value to limit structure 8 loosens take-up reel 21 after charging is accomplished, makes take-up reel 21 can reset under the effect of reset elastic component 25, and the charging wire that will stretch out is rewound and is retrieved to the inside of main part 1, can make charging device's use more convenient.

In one embodiment, as shown in fig. 7, the limiting structure 8 includes a swing buckle 81 disposed in the main body 1, one end of the swing buckle 81 is rotationally connected with the main body 1, the other end of the swing buckle 81 is provided with a positioning member, a limiting chute for being matched with the other end of the swing buckle 81 is disposed on the winding roll 21, and the positioning member is slidably disposed in the limiting chute 82. The specific structure and working principle of the swing buckle 81 and the limiting chute 82 can refer to the prior art, and the setting of the limiting structure 8 enables the winding roll 21 to be conveniently fixed and loosened.

The foregoing description of the preferred embodiments of the utility model has been presented only to illustrate the principles of the utility model and not to limit its scope in any way. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model, and other embodiments of the present utility model as will occur to those skilled in the art without the exercise of inventive faculty, are intended to be included within the scope of the present utility model.

Claims (10)

1. A vehicle-mounted charging device, characterized by comprising:

a main body part provided with a plug for connecting with an automobile power supply interface;

The winding mechanism is arranged in the main body part and comprises a winding roll and a rotating connecting plate, the winding roll is rotatably arranged in the main body part, the rotating connecting plate is connected with the winding roll and can rotate together with the winding roll, and the rotating connecting plate is also provided with a conductive part;

A charging wire, a first end of which is wound around a circumference of the winding roll and is electrically connected with the conductive part, and a second end of which is located outside the main body part;

The fixed connection board is arranged inside the main body part and electrically connected with the plug, and a conductive piece is arranged on the fixed connection board and is electrically connected with the conductive part in a sliding way.

2. The vehicle-mounted charging device according to claim 1, wherein the conductive portion has a ring-shaped structure, and the conductive portion is disposed coaxially with the winding reel.

3. The vehicle-mounted charging device according to claim 2, wherein the number of the conductive parts and the number of the conductive members are plural, and two adjacent conductive parts are arranged at intervals.

4. The vehicle-mounted charging device according to claim 1, wherein a fixing support frame for mounting and fixing the fixing connection plate is further provided in the main body portion, and a mounting structure is further provided on the fixing support frame, and the fixing connection plate is connected with the fixing support frame through the mounting structure.

5. The vehicle-mounted charging device according to claim 4, wherein the mounting structure comprises a plurality of fixed plug posts arranged on the fixed support frame, a plurality of plug holes matched with the fixed plug posts in position are arranged on the fixed connecting plate, and the fixed plug posts are mutually plugged and matched with the plug holes.

6. The vehicle-mounted charging device according to claim 5, wherein the fixed support frame is further provided with a plurality of limit stops, the plurality of limit stops are arranged at intervals, the plurality of limit stops are enclosed to form a mounting area, and the fixed connection plate is mounted in the mounting area.

7. The vehicle-mounted charging device according to claim 4, wherein the plug comprises a driving circuit board, an elastic pin and a connecting spring piece, the driving circuit board is electrically connected with the fixed connection board, the driving circuit board is mounted and fixed on the fixed support frame, the connecting spring piece and the elastic pin are both provided with contacts for electrically contacting with a power supply interface, and the connecting spring piece and the elastic pin are electrically connected with the driving circuit board for connecting the driving circuit board with the power supply interface.

8. The vehicle-mounted charging device according to claim 1, wherein a rotation shaft for mounting the winding roll is further provided in the main body portion, a rotation hole is provided in the winding roll, the rotation shaft is inserted in the rotation hole, and a return elastic member is provided between the rotation shaft and the winding roll.

9. The vehicle-mounted charging device of claim 8, wherein the main body portion is further provided with a limiting structure, and the limiting structure is used for limiting the winding roll in a preset active area.

10. The vehicle-mounted charging device according to claim 9, wherein the limiting structure comprises a swing buckle arranged in the main body part, one end of the swing buckle is rotatably connected with the main body part, and a limiting chute matched with the other end of the swing buckle is arranged on the winding roll.