CN219499002U - Telescopic charging device - Google Patents

Abstract

The utility model discloses a telescopic charging device, which relates to the technical field of charging devices and comprises a shell, a circuit assembly, a charging wire, a winding shell, a spring, a winding cover, a swing arm and a swing hook; one end of the charging wire is electrically connected with the circuit component, and the other end of the charging wire is wound outside the winding shell and then exposed out of the shell; the winding shell is provided with a containing groove, the spring is arranged in the containing groove, and one end of the spring is fixedly connected to the inner wall of the containing groove; the winding cover is detachably arranged at the top of the winding shell and covers the accommodating groove; the coiling cover is provided with a gear; the swing arm is positioned above the winding cover and is rotationally connected to the inner top of the shell; the shell is provided with a first parent magnetic attraction piece, the swing arm is provided with a clamping block and a first child magnetic attraction piece; the swing hook is positioned above the swing arm and is rotationally connected to the inner top of the shell; the top of the swing arm is provided with a limit groove; the shell is provided with a second parent magnetic attraction piece, and the swing hook is provided with a limit column and a second child magnetic attraction piece; the utility model realizes the effect that the stretching can be stopped at any time.

Description

Telescopic charging device

Technical Field

The utility model relates to the technical field of charging devices, in particular to a telescopic charging device.

Background

Along with diversification and generalization of intelligent products, the intelligent products become necessities in life of people, and cables of the existing intelligent product charging devices are inconvenient to store and are disordered; and when the cable is manually stored, the cable is bent and bound, so that the metal conductor in the cable is easily damaged.

Disclosure of Invention

The utility model discloses a telescopic charging device, which aims to solve the technical problem that a charging device cable is inconvenient to store.

In order to solve the technical problems, the utility model provides the following optimization technical scheme:

the telescopic charging device comprises a shell, a circuit assembly, a charging wire, a winding shell, a spring, a winding cover, a swing arm and a swing hook, wherein the shell is provided with a cavity, and the circuit assembly, the charging wire, the winding shell, the winding cover, the swing arm and the swing hook are all arranged in the cavity;

the winding shell is rotationally connected in the shell; one end of the charging wire is electrically connected with the circuit component, and the other end of the charging wire is wound outside the winding shell and then exposed out of the shell; the top center of the winding shell is provided with an accommodating groove, the spring is arranged in the accommodating groove, and one end of the spring is fixedly connected to the inner wall of the accommodating groove; the winding cover is detachably arranged at the top of the winding shell and covers the accommodating groove;

the center of the top of the winding cover is provided with a gear; the swing arm is positioned above the winding cover and is rotationally connected to the inner top of the shell; the periphery of the inner top of the shell is provided with a first parent magnetic attraction piece, the bottom of one end of the swing arm, which is far away from the first parent magnetic attraction piece, is provided with a clamping block, and one end of the swing arm, which is close to the first parent magnetic attraction piece, is provided with a first child magnetic attraction piece;

the swing hook is positioned above the swing arm and is rotationally connected to the inner top of the shell; the top of the swing arm is provided with a limit groove which is of an irregular pentagonal concave structure; the limit of the inner top of the shell is set with a second magnetic attraction piece, one end of the swing hook far away from the second magnetic attraction piece is set with a limit column, one end near the second magnetic attraction piece is set with a second magnetic attraction piece.

Further, the housing includes a bottom case and a top case, the top of the bottom case is concave to form the cavity, and the bottom case is detachably mounted on the bottom case and covers the cavity.

Further, a plurality of first clamping grooves are formed in the side wall of the bottom shell at intervals, first buckles corresponding to the first clamping grooves one by one are arranged on the outer side wall of the top shell, and the first buckles are inserted into the first clamping grooves to enable the top shell to be connected with the bottom shell.

Further, the circuit assembly includes a first circuit board and a second circuit board;

the center of the bottom of the winding shell is provided with a linkage shaft, and the side wall of the linkage shaft is provided with a protruding strip; a linkage hole is formed in the center of the first circuit board, and the linkage hole is sleeved on the linkage shaft so that the first circuit board is fixedly connected with the winding shell;

a plurality of fixing columns are arranged at intervals at the inner bottom of the bottom shell; the second circuit board is provided with fixing holes which are in one-to-one correspondence with the fixing columns, and the fixing holes are sleeved on the fixing columns to fixedly connect the second circuit board with the bottom shell;

the first circuit board is electrically connected with the charging wire and the second circuit board, the second circuit board is provided with a power input end, and the power input end penetrates through the bottom shell and is exposed out of the bottom shell.

Further, two spring plate connectors are arranged at the bottom of the first circuit board; the top of the second circuit board is provided with a conductive guide rail, and the elastic sheet connector is contacted with the conductive guide rail to enable the first circuit board to be electrically connected with the second circuit board.

Further, a central shaft is arranged at the center of the inner bottom of the bottom shell, the central shaft sequentially penetrates through the second circuit board, the first circuit board and the winding shell and then stretches into the accommodating groove, and the second circuit board and the winding shell are both in rotary connection with the central shaft; the holding groove is equipped with protruding strip, the one end of clockwork spring is fixed on the center pin, the other end is fixed on protruding strip.

Further, the side wall of the winding cover is provided with two second buckles with opposite positions, the side wall of the accommodating groove is provided with second clamping grooves corresponding to the second buckles one by one, and the second buckles are inserted into the second clamping grooves to enable the winding cover to be connected to the winding shell.

Further, a first rotating shaft is arranged at the bottom of the top shell and is positioned between the first female magnetic attraction piece and the gear; the swing arm is provided with a first rotating hole, and the first rotating shaft is inserted into the first rotating hole to enable the swing arm to be connected with the top shell in a rotating mode.

Further, a second rotating shaft is arranged at the bottom of the top shell and is positioned between the second female magnetic attraction piece and the gear; the swing hook is provided with a second rotating hole, and the second rotating shaft is inserted into the second rotating hole to enable the swing hook to be connected with the top shell in a rotating mode.

Further, the spacing groove includes first bar groove, second bar groove, third bar groove, fourth bar groove and fifth bar groove, first bar groove is followed the vertical setting of swing arm, the one end of second bar groove with first bar groove intercommunication, the other end is followed the lower left side of first bar groove extends, the one end intercommunication of third bar groove the second bar groove, the other end is followed the upper left side of second bar groove extends, the one end intercommunication of fourth bar groove the third bar groove, another list is followed the lower right side of third bar groove extends, the one end intercommunication of fifth bar groove the fourth bar groove, the other end is followed the upper right side of fourth bar groove extends and connects first bar groove.

Compared with the prior art, the utility model has the following beneficial effects:

the charging device provided by the utility model discloses a shell, a circuit assembly, a charging wire, a winding shell, a spring, a winding cover, a swing arm and a swing hook, wherein the power supply is connected through the circuit assembly, and the charging wire is connected with intelligent equipment; the gear is arranged on the winding cover, the swing arm is arranged above the winding cover, and when the charging wire is pulled, the winding shell rotates, and the gear on the winding cover drives the clamping block on the swing arm, so that the swing arm intermittently swings on one side of the gear; when the charging wire is loosened, the charging wire has a recycling trend under the action of the rotation of the spring. The spiral spring rotary force drives the spiral winding to cover the gear to rotate, the first sub-magnetic attraction piece on the swing arm is attracted by the first main magnetic attraction piece, the clamping block on the swing arm is meshed with the gear, the gear drives the swing arm to move, the groove on the swing arm simultaneously drives the swing hook to move until the limit post on the swing hook slides to the pentagonal turning part of the limit groove, the swing arm cannot move, the clamping block on the swing arm clamps the gear, the gear cannot rotate, the charging wire is stopped to be recovered, and therefore the effect that the charging wire is limited at a certain position is achieved, and the effect that stretching can be stopped at any time is achieved. The charging wire is pulled for a small distance again, then is loosened immediately, and the limit post on the swing hook is separated from the turning position of the limit groove, so that the winding shell can completely rotate to store the charging wire.

Drawings

Fig. 1 is a schematic view of the overall structure of the present utility model.

Fig. 2 is a schematic diagram of a portion of the structure of the present utility model.

Fig. 3 is a schematic structural view of the top case of the present utility model.

Fig. 4 is a schematic structural view of the bottom chassis of the present utility model.

Fig. 5 is a schematic diagram of a portion of the structure of the present utility model.

Fig. 6 is a schematic structural view of a first circuit board of the present utility model.

Fig. 7 is a schematic structural diagram of a second circuit board of the present utility model.

Fig. 8 is a schematic structural view of the winding case of the present utility model.

Fig. 9 is a schematic structural view of the winding cap of the present utility model.

Fig. 10 is a schematic structural view of the swing arm of the present utility model.

Fig. 11 is a schematic structural view of a swing arm according to the present utility model.

FIG. 12 is a schematic view of a swing hook according to the present utility model

In the figure: 1. a housing; 2. a charging wire; 3. a winding case; 4. a spring; 5. a winding cover; 6. swing arms; 7. a swinging hook; 8. a cavity; 9. a receiving groove; 10. a gear; 11. a first parent magnetic attraction piece; 12. a clamping block; 13. a first sub-magnetic attraction member; 14. a limit groove; 15. a second parent magnetic attraction piece; 16. a limit column; 17. a second sub-magnetic attraction member; 18. a bottom case; 19. a top shell; 20. a first clamping groove; 21. a first buckle; 22. a first circuit board; 23. a second circuit board; 24. a linkage shaft; 25. a protruding strip; 26. a linkage hole; 27. fixing the column; 28. a fixing hole; 29. a power input; 30. a spring connector; 31. a conductive rail; 32. a central shaft; 33. a power supply output terminal; 34. a second buckle; 35. a second clamping groove; 36. a first rotation shaft; 37. a first rotation hole; 38. a second rotation shaft; 39. a second rotation hole; 40. a first bar-shaped groove; 41. a second bar-shaped groove; 42. a third bar-shaped groove; 43. a fourth bar-shaped groove; 44. a fifth bar-shaped groove; 45. a first frame; 46. and a second frame.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

Referring to fig. 1-11, a telescopic charging device comprises a shell 1, a circuit assembly, a charging wire 2, a winding shell 3, a spring 4, a winding cover 5, a swinging arm 6 and a swinging hook 7, wherein the shell 1 is provided with a cavity 8, and the circuit assembly, the charging wire 2, the winding shell 3, the winding cover 5, the swinging arm 6 and the swinging hook 7 are all arranged in the cavity 8;

the winding shell 3 is rotatably connected in the shell 1; one end of the charging wire 2 is electrically connected with the circuit component, and the other end of the charging wire is wound outside the winding shell 3 and then exposed out of the shell 1; the top center of the winding shell 3 is provided with a containing groove 9, the spring 4 is arranged in the containing groove 9, and one end of the spring 4 is fixedly connected to the inner wall of the containing groove 9; the winding cover 5 is detachably installed on the top of the winding shell 3 and covers the accommodating groove 9;

the center of the top of the winding cover 5 is provided with a gear 10; the swing arm 6 is positioned above the winding cover 5 and is rotationally connected to the inner top of the shell 1; the periphery of the inner top of the shell 1 is provided with a first female magnetic attraction piece 11, the bottom of one end of the swing arm 6 far away from the first female magnetic attraction piece 11 is provided with a clamping block 12, and one end close to the first female magnetic attraction piece 11 is provided with a first male magnetic attraction piece 13; the swing hook 7 is positioned above the swing arm 6 and is rotatably connected to the inner top of the shell 1; the top of the swing arm 6 is provided with a limit groove 14, and the limit groove 14 is of an irregular pentagonal concave structure; the periphery of the inner top of the shell 1 is provided with a second main magnetic attraction piece 15, the bottom of one end of the swing hook 7 far away from the second main magnetic attraction piece 15 is provided with a limit column 16, the limit column 16 sinks into the limit groove 14, and one end close to the second main magnetic attraction piece 15 is provided with a second sub magnetic attraction piece 17; when the charging wire 2 is pulled, the swing arm 6 rotates clockwise by the gear, the limit groove 14 of the swing arm 6 drives the limit post 16 to rotate, so that the swing hook 7 is driven to move, when the charging wire is released, the spring 4 drives the gear 10 to rotate anticlockwise, the magnetic force of the first parent magnetic attraction piece 11 enables the clamping block 12 on the swing arm 6 to be meshed with the gear 10, the gear 10 drives the swing arm 6 to swing to the other side, at the moment, the limit post 16 on the swing hook 7 is guided by the limit groove 14 to be clamped at a turning position in the limit groove 14, so that the swing arm 6 stops moving, meanwhile, the clamping block 12 on the swing arm 6 clamps the gear 10 to rotate anticlockwise, the spring 4 is further stopped rotating, and finally the charging wire 2 stops recycling; when the charging wire 2 is pulled again, the gear 10 rotates clockwise, so that the swing arm 6 swings rightwards, and the limit groove 14 on the swing arm 6 guides the limit post 16 to be separated from the turning part of the limit groove 14 from the left; when the charging wire is loosened again, the spiral spring 4 rotates to drive the gear 10, the gear 10 drives the swing arm to swing leftwards, the limiting groove 14 guides the limiting post 16 to fall into the bottom of the limiting groove 14, and at the moment, the limiting post 16 does not play a limiting role on the limiting groove 14, so that the swing arm 6 does not play a limiting role on the gear 10. Finally, the winding shell 3 winds the charging wire 2 under the turning force of the spring until the winding is completed.

In the above technical solution, by pulling one end of the charging wire 2 exposed out of the housing 1, since the charging wire 2 is wound around the winding housing 3, the charging wire 2 drives the winding housing 3 to rotate clockwise, since the winding cover 5 is mounted on the winding housing 3, the winding cover 5 rotates clockwise together with the winding housing 3, the protruding teeth of the gear 10 have an impact effect on the clamping block 12 of the swing arm 6, so that one end of the swing arm 6 swings on the right side of the gear 10, and while the swing arm 6 swings, one end of the swing hook 7 moves along with the swing arm 6 because the limit post 16 of the swing hook 7 is located in the limit groove 14 of the swing arm 6; when the charging wire 2 is loosened, the tension of the charging wire 2 disappears, the spring 4 has a rebound force, the rebound force is intended to reset the winding shell 3, when the winding shell 3 rotates anticlockwise, the gear 10 rotates anticlockwise, the first sub-magnetic attraction piece 13 at one end of the swing arm 6 is attracted by the first main magnetic attraction piece 11, so that the swing arm 6 is meshed with the gear 10 and is pulled by the gear 10 to swing leftwards, the second sub-magnetic attraction piece at one end of the swing hook 7 is attracted by the second main magnetic attraction piece and is guided by the limiting groove to the limiting post 16 at the other end of the swing hook 7, the limiting post 16 at one end of the swing hook 7 is clamped on the turning point of the limiting groove 14, the swing arm 6 cannot swing leftwards, the swing arm 6 further limits the winding cover 5, the winding cover 5 does not rotate, and therefore the extending length of the data wire is limited at a certain position. When the charging wire 2 is pulled again, the wire winding shell 3 and the wire winding cover 5 rotate clockwise, the swing arm 6 swings rightwards, and the limit post 16 at one end of the swing hook 7 is separated from the turning point on the limit groove 14 rightwards relative to the limit groove 14 under the guidance of the limit groove 14; when the charging wire 2 is loosened again, the limiting post 16 falls into the lower part of the limiting groove 14, the swing arm 6 cannot be limited, meanwhile, the swing arm 6 cannot limit the gear 10 on the winding cover 5, the spring 4 always rotates under the action of resilience force, and the charging wire 2 is wound until the charging wire 2 is completely stored.

The detailed process of the data line expansion and contraction stopping is as follows:

1. the data wire is contracted in the shell 1 and wound on the winding shell 3, at the moment, the swing arm 6 is arranged at the left side of the gear 10, the first sub-magnetic attraction piece 13 at one end of the swing arm 6 is attracted by the magnetic force of the first main magnetic attraction piece 11 on the top shell, so that the clamping block 12 at the other end of the swing arm 6 is in a meshing state with the gear 10, and the limit post 16 at one end of the swing hook 7 is positioned in the fifth strip-shaped groove 44 of the limit groove 14, and the state is an initial state;

2. the charging wire 2 is pulled to expose one end of the shell 1, the charging wire 2 drives the winding shell 3 to rotate clockwise, the gear 10 also rotates clockwise, the clamping block 12 is pulled to the right side by the gear 10, and along with the rotation of the gear 10, the clamping block 12 is continuously bumped open by the gear 10 and reset under the attractive force action of the first sub magnetic attraction piece and the second main magnetic attraction piece, so that the swing arm 6 swings left and right on the right side of the gear 10, at the moment, the limit post 16 at one end of the swing hook 7 is pulled to the first strip-shaped groove 40 by the limit groove 14, and the limit post 16 moves to the second strip-shaped groove 41 under the action of the second main magnetic attraction piece 15.

3. When the charging wire 2 is pulled out for a certain length and then is loosened, the winding shell 3 rotates to enable the gear 10 to rotate anticlockwise under the action of resilience force of the spring 4, the swing arm 6 rotates anticlockwise under the action of magnetic force of the first parent magnetic attraction piece 11 to enable the clamping block 12 to be meshed with the gear 10, then the swing arm 6 is pulled to swing leftwards by the gear 10, and meanwhile the limit post 16 at one end of the swing hook 7 is pulled by the limit groove 14 to enable the limit post 16 to fall onto a turning point of the limit groove from the second strip-shaped groove 41. At this time, the limiting post 16 clamps the swing arm 6, so that the swing arm 6 cannot swing leftwards, the clamping block 12 at one end of the swing arm 6 clamps the gear, the gear 10 cannot continue to rotate anticlockwise, the winding shell cannot further rotate to store the charging wire 2, and the effect of stopping shrinking the charging wire at any time is achieved.

4. The charging wire 2 is pulled again for a small distance, the charging wire 2 drives the winding shell 3 to rotate clockwise, the gear 10 also rotates clockwise, the clamping block 12 on the swinging arm 6 is pulled by the gear to move rightwards, and meanwhile, the limit post 16 at one end of the swinging hook 7 is separated from the turning point on the limit groove 14 under the guidance of the limit groove 14 and moves towards the third strip-shaped groove 42.

5. The charging 2 is loosened again, the winding shell 3 rotates to enable the gear 10 to rotate anticlockwise under the action of resilience force of the spring 4, the swing arm 6 rotates anticlockwise under the action of magnetic force of the first parent magnetic attraction piece 11 to enable the clamping block 12 to be meshed with the gear 10, then the swing arm 6 is pulled by the gear 10 to swing leftwards, and when the swing arm 6 is pulled by the gear 10 to swing leftwards, the limit post 16 at one end of the swing hook 7 is pulled by the limit groove 14 and falls to the fourth strip-shaped groove 43. Along with the swing arm 6 continuing to swing rightward, the limit post 16 moves onto the fifth strip-shaped groove 44 under the action of the second female magnetic attraction piece 15. At this time, the limiting post 16 has no limiting effect on the swing arm 6, and the swing arm 6 has no limiting effect on the gear 10, so that the resilience force of the spring 4 always drives the winding shell 3 to rotate anticlockwise for winding until the storage of the charging wire 2 is completed.

One end of the charging wire 2 exposed outside the case 1 is a power output end 32 and a center shaft 33; the power output end 32 and the central shaft 33 are used for connecting with electronic products such as mobile phones and ipad, and can be selected as a type-c interface, a type-b interface or other interfaces to realize electrical connection. The circuit assembly is connected with a power input end 29, and the power input end 29 is used for connecting a socket, a charger or other power structures, and can be selected as a USB interface, a plug or other connecting structures so as to realize electrical connection. The first mother magnetic attraction piece 11 and the first son magnetic attraction piece 13 are two magnets with magnetism, and the magnetism of the two magnets attracts each other. The second main magnetic attraction member 15 and the second sub magnetic attraction member 17 are two magnets with magnetism, and the magnetism of the two magnets attracts each other. The charging wire 2 is wound on the side surface of the winding shell 3, one end of the charging wire 2 is fixed on the side surface of the winding shell 3, the other end of the charging wire is exposed out of the shell 1, and the winding shell 3 is driven to rotate when one end of the charging wire 2 exposed out of the shell 1 is pulled.

To supplement, referring to fig. 9, a first slot is formed in the bottom surface of the end part of the swing arm 6, the first sub-magnetic attraction piece 13 is accommodated in the first slot, and the first sub-magnetic attraction piece 13 is tightly fixed in the first slot in an interference fit manner; the bottom surface of the end part of the swing hook 7 is provided with a second groove, the second sub-magnetic attraction piece 17 is accommodated in the second groove, and the second sub-magnetic attraction piece 17 is tightly fixed in the second groove in an interference fit manner; referring to fig. 4, the bottom periphery of the top case 19 is provided with a first frame 45 and a second frame 46, and the first and second parent magnetic attraction pieces 11 and 15 are respectively received in the first and second frames 45 and 15.

In this embodiment, referring to fig. 1, 3 and 4, the housing 1 includes a bottom case 18 and a top case 19, the top of the bottom case 18 is concave to form the cavity 8, and the bottom case 18 is detachably mounted on the bottom case 18 and covers the cavity 8. The detachable connection structure of the bottom shell 18 and the top shell 19 has various options to realize detachable connection, for example, a plurality of first clamping grooves 20 are formed in the side wall of the bottom shell 18 at intervals, first clamping buckles 21 corresponding to the first clamping grooves 20 one by one are arranged on the outer side wall of the top shell 19, and the first clamping buckles 21 are inserted into the first clamping grooves 20 to enable the top shell 19 to be connected with the bottom shell 18.

In the present embodiment, referring to fig. 3, 5, 6, 7, 8, the circuit assembly includes a first circuit board 22 and a second circuit board 23;

a linkage shaft 24 is arranged at the bottom center of the winding shell 3, and a protruding strip 25 is arranged on the side wall of the linkage shaft 24; the center of the first circuit board 22 is provided with a linkage hole 26, the shape and the size of the linkage hole are the same as those of the cross-section structures of the linkage shaft 24 and the raised strip 25, namely, the linkage hole 26 is matched with the structures of the linkage shaft 24 and the raised strip 25, so that the linkage shaft 24 and the raised strip 25 can pass through the linkage hole 26, the linkage hole 26 is sleeved on the linkage shaft 24 to fixedly connect the first circuit board 22 with the winding shell 3, and when the winding shell 3 rotates, the first circuit board 22 rotates together with the winding shell 3 under the drive of the raised strip 25;

a plurality of fixing columns 27 are arranged at intervals at the inner bottom of the bottom shell 18; the second circuit board 23 is provided with fixing holes 28 corresponding to the fixing columns 27 one by one, and the fixing holes 28 are sleeved on the fixing columns 27 to fixedly connect the second circuit board 23 with the bottom shell 18;

the first circuit board 22 is electrically connected with the charging line 2 and the second circuit board 23, the second circuit board 23 is provided with a power input end 29, the power input end 29 penetrates through the bottom shell 18 and is exposed out of the bottom shell 18, and the power input end 29 is used for connecting a socket, a charger or other power structures, and can be selected as a USB interface, a plug or other connecting structures so as to realize switching on an external power supply.

In the present embodiment, referring to fig. 6 and 7, two spring connectors 30 are disposed at the bottom of the first circuit board 22; the top of the second circuit board 23 is provided with a conductive guide rail 31, and the elastic sheet connector 30 contacts with the conductive guide rail 31 to electrically connect the first circuit board 22 with the second circuit board 23. When the winding shell 3 rotates, the winding shell 3 drives the first circuit board 22 to rotate, and at this time, the spring connector 30 slides on the conductive rail 31 and is electrically connected with the conductive rail 31. It should be noted that, the two spring connectors 30 are respectively an anode and a cathode, the conductive rail 31 is a plurality of tracks, and the two spring connectors 30 are respectively connected with different tracks correspondingly to connect the anode and the cathode.

In this embodiment, referring to fig. 2, 3 and 8, a central shaft 32 is disposed at the center of the inner bottom of the bottom shell 18, the central shaft 32 sequentially passes through the second circuit board 23, the first circuit board 22 and the winding shell 3 and then extends into the accommodating groove 9, the second circuit board 23 and the winding shell 3 are both rotatably connected with the central shaft, the central shaft 32 plays a role of connecting the first circuit board 22, the second circuit board 23 and the winding shell 3, and simultaneously, the second circuit board 23 and the winding shell 3 are limited to rotate around the central shaft 32, and the specific mode of movably connecting the winding shell 3 and the bottom shell 18 is that the central shaft 32 extends into the accommodating groove 9 through the universal driving shaft 24; a protruding strip 25 is arranged in the accommodating groove 9, one end of the spring 4 is fixed on the central shaft 32, the other end of the spring 4 is fixed on the protruding strip 25, and various modes of fixing the spring 4 on the central shaft are provided, for example, a groove position is formed in the top of the central shaft along the bottom direction, and one end of the spring 4 is clamped in the groove position; when the winding case 3 rotates clockwise, since both ends of the spring 4 are fixed to the center shaft 32 and the protruding strip 25, respectively, the spring 4 has a turning force on the protruding strip 25 and has a return action of turning counterclockwise on the winding case 3. Specifically, the spring 4 is a wound-up sheet steel bar, and can generate power when gradually released by its elastic force.

In this embodiment, referring to fig. 2 and 9, two second buckles 34 are disposed on the side wall of the winding cover 5, the second slots 35 are disposed on the side wall of the accommodating slot 9 and correspond to the second buckles 34 one by one, and the second buckles 34 are inserted into the second slots 35 to connect the winding cover 5 to the winding shell 3, so as to detachably mount the winding cover 5 on the winding shell 3.

In this embodiment, referring to fig. 4 and 10, a first rotating shaft 36 is disposed at the bottom of the top shell 19, and the first rotating shaft 36 is located between the first magnetic attraction component 11 and the gear 10, that is, when the swing arm 6 rotates under the driving of the gear 10, the swing arm 6 rotates around the first rotating shaft 36, and two ends of the swing arm 6 move in opposite directions, that is, the movement directions of the first magnetic attraction component 13 and the clamping block 12 are opposite; the swing arm 6 is provided with a first rotating hole 37, and the first rotating shaft 36 is inserted into the first rotating hole 37 to enable the swing arm 6 to be rotationally connected with the top shell 19, so that the swing arm 6 is rotationally connected with the top shell 19.

In this embodiment, referring to fig. 4 and 12, a second rotating shaft 38 is disposed at the bottom of the top shell 19, and the second rotating shaft 38 is located between the second magnetic attraction component 15 and the gear 10, that is, when the swing hook 7 rotates under the driving of the swing arm 6, the swing hook 7 rotates around the second rotating shaft 38, and two ends of the swing hook 7 move in opposite directions, that is, the movement directions of the second magnetic attraction component 17 and the limiting post 16 are opposite; the swinging hook 7 is provided with a second rotating hole 39, and the second rotating shaft 38 is inserted into the second rotating hole 39 to enable the swinging hook 7 to be rotationally connected with the top shell 19, so that the rotating connection of the swinging hook 7 and the top shell 19 is realized.

In this embodiment, referring to fig. 11, the limiting groove 14 includes a first groove 40, a second groove 41, a third groove 42, a fourth groove 43 and a fifth groove 44, the first groove 40 is disposed along the longitudinal direction of the swing arm 6, one end of the second groove 41 is communicated with the first groove 40, the other end extends along the lower left side of the first groove 40, one end of the third groove 42 is communicated with the second groove 41, the other end extends along the upper left side of the second groove 41, one end of the fourth groove 43 is communicated with the third groove 42, the other end extends along the lower right side of the third groove 42, one end of the fifth groove 44 is communicated with the fourth groove 43, and the other end extends along the upper right side of the fourth groove 43 and is connected with the first groove 40. In the original state, the limit post 16 on the swinging hook 7 is located in the fifth bar-shaped groove 44, the charging wire 2 is pulled in the original state, the gear 10 rotates clockwise, the clamping block 12 always has a movement trend toward the meshing of the gear 10 under the attractive force action of the first sub magnetic attraction piece 13 and the first main magnetic attraction piece 11, so that the gear 10 drives the swinging arm 6 to swing clockwise, and at the moment, the swinging hook 7 slides to the upper side of the first bar-shaped groove 40. And slides over the second bar-shaped groove 41 under the action of the second female magnetic attraction piece 15. When the pulling force of the charging wire 2 disappears, the winding shell 3 rotates anticlockwise under the action of the restoring force of the clamping strip, the winding shell 3 rotates to enable the gear 10 to rotate anticlockwise under the action of the resilience force of the spring 4, the swing arm 6 rotates anticlockwise under the action of the magnetic force of the first parent magnetic attraction piece 11 to enable the clamping block 12 to be meshed with the gear 10, then the swing arm 6 is pulled to swing leftwards by the gear 10, meanwhile, the limit post 16 at one end of the swing hook 7 is pulled by the limit groove 14, the limit post 16 is clamped at the joint of the second strip-shaped groove 41 and the third strip-shaped groove 42 from the second strip-shaped groove 41, the joint is a turning point, the limit post 16 is clamped in the turning point to have a traction effect on the swing arm 6, and the swing arm 6 has a traction effect on the winding shell 3. The charging wire 2 is pulled again for a small distance, the charging wire 2 drives the winding shell 3 to rotate clockwise, the gear 10 also rotates clockwise, the clamping block 12 on the swinging arm 6 is pulled by the gear to move rightwards, and meanwhile, the limit post 16 at one end of the swinging hook 7 is separated from the turning point on the limit groove 14 under the guidance of the limit groove 14 and moves towards the third strip-shaped groove 42. The charging 2 is loosened again, the winding shell 3 rotates to enable the gear 10 to rotate anticlockwise under the action of resilience force of the spring 4, the swing arm 6 rotates anticlockwise under the action of magnetic force of the first parent magnetic attraction piece 11 to enable the clamping block 12 to be meshed with the gear 10, then the swing arm 6 is pulled by the gear 10 to swing leftwards, and when the swing arm 6 is pulled by the gear 10 to swing leftwards, the limit post 16 at one end of the swing hook 7 is pulled by the limit groove 14 and falls to the fourth strip-shaped groove 43. Along with the swing arm 6 continuing to swing rightward, the limit post 16 moves to the fifth strip-shaped groove 44 under the action of the second parent magnetic attraction piece 15, namely, the swing hook 7 returns to the original state.

The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The telescopic charging device is characterized by comprising a shell, a circuit assembly, a charging wire, a winding shell, a spring, a winding cover, a swing arm and a swinging hook, wherein the shell is provided with a cavity, and the circuit assembly, the charging wire, the winding shell, the winding cover, the swing arm and the swinging hook are all arranged in the cavity;

the winding shell is rotationally connected in the shell; one end of the charging wire is electrically connected with the circuit component, and the other end of the charging wire is wound outside the winding shell and then exposed out of the shell; the top center of the winding shell is provided with an accommodating groove, the spring is arranged in the accommodating groove, and one end of the spring is fixedly connected to the inner wall of the accommodating groove; the winding cover is detachably arranged at the top of the winding shell and covers the accommodating groove;

the center of the top of the winding cover is provided with a gear; the swing arm is positioned above the winding cover and is rotationally connected to the inner top of the shell; the periphery of the inner top of the shell is provided with a first parent magnetic attraction piece, the bottom of one end of the swing arm, which is far away from the first parent magnetic attraction piece, is provided with a clamping block, and one end of the swing arm, which is close to the first parent magnetic attraction piece, is provided with a first child magnetic attraction piece;

the swing hook is positioned above the swing arm and is rotationally connected to the inner top of the shell; the top of the swing arm is provided with a limit groove which is of an irregular pentagonal concave structure; the limit of the inner top of the shell is set with a second magnetic attraction piece, one end of the swing hook far away from the second magnetic attraction piece is set with a limit column, one end near the second magnetic attraction piece is set with a second magnetic attraction piece.

2. The retractable charging device of claim 1, wherein the housing comprises a bottom shell and a top shell, the top of the bottom shell being recessed to form the cavity, the bottom shell being removably mounted to the bottom shell and covering the cavity.

3. The telescopic charging device according to claim 2, wherein a plurality of first clamping grooves are formed in the side wall of the bottom shell at intervals, first clamping buckles corresponding to the first clamping grooves one by one are arranged on the outer side wall of the top shell, and the first clamping buckles are inserted into the first clamping grooves to enable the top shell to be connected with the bottom shell.

4. The retractable charging apparatus of claim 2, wherein said circuit assembly comprises a first circuit board and a second circuit board;

the center of the bottom of the winding shell is provided with a linkage shaft, and the side wall of the linkage shaft is provided with a protruding strip; a linkage hole is formed in the center of the first circuit board, and the linkage hole is sleeved on the linkage shaft so that the first circuit board is fixedly connected with the winding shell;

a plurality of fixing columns are arranged at intervals at the inner bottom of the bottom shell; the second circuit board is provided with fixing holes which are in one-to-one correspondence with the fixing columns, and the fixing holes are sleeved on the fixing columns to fixedly connect the second circuit board with the bottom shell;

the first circuit board is electrically connected with the charging wire and the second circuit board, the second circuit board is provided with a power input end, and the power input end penetrates through the bottom shell and is exposed out of the bottom shell.

5. The retractable charging device of claim 4, wherein two spring connectors are provided on the bottom of the first circuit board; the top of the second circuit board is provided with a conductive guide rail, and the elastic sheet connector is contacted with the conductive guide rail to enable the first circuit board to be electrically connected with the second circuit board.

6. The telescopic charging device according to claim 4, wherein a central shaft is arranged at the center of the inner bottom of the bottom shell, and the central shaft penetrates through the second circuit board, the first circuit board and the winding shell in sequence and then stretches into the accommodating groove, and the second circuit board and the winding shell are both rotatably connected with the central shaft; the holding groove is equipped with protruding strip, the one end of clockwork spring is fixed on the center pin, the other end is fixed on protruding strip.

7. The telescopic charging device according to claim 4, wherein two second buckles are disposed on the side wall of the winding cover, the second buckles are disposed on the side wall of the accommodating groove and correspond to the second buckles one by one, and the second buckles are inserted into the second buckles to enable the winding cover to be connected to the winding shell.

8. The telescopic charging device according to claim 2, wherein a first rotation shaft is provided at the bottom of the top case, the first rotation shaft being located between the first female magnetic attraction member and the gear; the swing arm is provided with a first rotating hole, and the first rotating shaft is inserted into the first rotating hole to enable the swing arm to be connected with the top shell in a rotating mode.

9. The telescopic charging apparatus according to claim 2, wherein a second rotating shaft is provided at the bottom of the top case, the second rotating shaft being located between the second female magnetic attraction member and the gear; the swing hook is provided with a second rotating hole, and the second rotating shaft is inserted into the second rotating hole to enable the swing hook to be connected with the top shell in a rotating mode.

10. The telescopic charging apparatus according to claim 1, wherein the limit groove comprises a first bar groove, a second bar groove, a third bar groove, a fourth bar groove and a fifth bar groove, the first bar groove is arranged along the longitudinal direction of the swing arm, one end of the second bar groove is communicated with the first bar groove, the other end of the second bar groove extends along the lower left side of the first bar groove, one end of the third bar groove is communicated with the second bar groove, the other end of the third bar groove extends along the upper left side of the second bar groove, one end of the fourth bar groove is communicated with the third bar groove, the other end of the fourth bar groove extends along the lower right side of the third bar groove, one end of the fifth bar groove is communicated with the fourth bar groove, and the other end of the fifth bar groove extends along the upper right side of the fourth bar groove and is connected with the first bar groove.