CN111546930B - Charger protection device with safety protection function - Google Patents

Abstract

The invention discloses a charger protection device with a safety protection function, which comprises a charging pile, wherein a drawer cavity with a right opening is arranged at the top in the charging pile, a drawer is arranged in the drawer cavity in a left-right sliding manner, a placing cavity with an upward opening is arranged in the drawer, a placing plate for supporting a charger is arranged in the placing cavity, a temperature sensing block is fixedly arranged at the left end of the lower wall of the drawer cavity, and a cooling device is arranged at the lower side of the placing plate. The energy loss caused by the accidental start of the fan is avoided.

Description

Charger protection device with safety protection function

Technical Field

The invention relates to the technical field of charging piles, in particular to a charger protection device with a safety protection function.

Background

In our daily life, most people can use the electric motor car trip, and the electric motor car generally uses and fills electric pile and charge, and the charger generally can only be placed on the electric motor car or hang in the air, and then can lead to the plug accident to drop, and the charger pounces on the ground, leads to the charger to damage, and it is comparatively inconvenient to use to the charger can generate heat in charging process, and the charger is overheated also can damage. Current fill electric pile generally can only lock the plug, but does not have the function of carrying out bearing and protection to the charger, and the result of use is relatively poor. The present invention sets forth a device that solves the above problems.

Disclosure of Invention

The technical problem is as follows: the locking of plug is not had in ordinary electric pile of filling, and the function of placing of charger brings inconvenience and hidden danger for the electric motor car charges.

In order to solve the problems, the charger protection device with the safety protection function is designed in the embodiment, and comprises a charging pile, wherein a drawer cavity with a right opening is formed in the top in the charging pile, a drawer is arranged in the drawer cavity and can slide left and right, a placing cavity with an upward opening is formed in the drawer, a placing plate for supporting the charger is arranged in the placing cavity, a temperature sensing block is fixed to the left end of the lower wall of the drawer cavity, a cooling device is arranged on the lower side of the placing plate and comprises a fan cavity communicated with the lower wall of the placing cavity, the lower wall of the fan cavity is rotatably connected with a fan shaft, fans are symmetrically and fixedly arranged at the left end and the right end of the outer circular surface of the fan shaft, sliding cavities communicated with the lower wall of the placing cavity are symmetrically arranged at the left side and the right side of the fan cavity, and sliding plates are arranged in the sliding cavities and can slide, the placing plate is fixedly arranged at the upper ends of the sliding plates at the left side and the right side, a motor cavity is arranged at the lower side of the fan cavity and is right opposite to the fan shaft, a fan motor is arranged in the motor cavity and can slide up and down, a spline is connected to the upper end of the fan motor in a power mode, a spline groove with a downward opening is formed in the fan shaft, the spline can extend upwards into the spline groove and is connected with the spline groove in a spline mode, a lever mechanism is arranged between the fan motor and the sliding plates at the left side and the right side, when a charger is placed above the placing plate, the placing plate is pressed downwards through the gravity of the charger and drives the sliding plate to descend, the fan motor is driven to ascend through the lever mechanism until the spline extends into the spline groove, a connecting plate is fixedly arranged at the lower end of the left end face of, the wire winding device is characterized in that a wire winding wheel device for releasing and winding the electric wire is arranged on the left side of the socket, clamping devices are symmetrically arranged on the front side and the rear side of the socket, when a charger plug is inserted into the right end face of the socket, the charger plug can be clamped through the clamping devices, the plug is prevented from accidentally falling off, a moving device for controlling the connecting plate to move forwards and backwards and leftwards is arranged on the lower side of the drawer cavity, the moving device comprises a moving cavity communicated with the lower side of the drawer cavity, a fixing plate capable of moving forwards and backwards is arranged in the moving cavity, a transverse sliding block capable of moving leftwards and rightwards is arranged on the upper end face of the fixing plate, the upper end of the transverse sliding block is fixedly connected with the lower end face of the connecting plate, the wire winding wheel device is connected with the left and right moving, the fixing plate drives the drawer to move back and forth to adjust the front position and the rear position.

Preferably, a spring is fixedly connected between the lower end of the sliding plate and the lower wall of the sliding cavity, and the spring provides power for the lifting and resetting of the sliding plate.

Preferably, lever mechanism includes that symmetry and intercommunication are located the motor chamber left and right sides and respectively with the left and right sides the lever chamber of slip chamber intercommunication, the fixed connecting axle that is equipped with between the wall before the lever chamber, the disc rotates outside the connecting axle and is connected with the lever, run through around and be equipped with the chamber of sliding about both ends symmetry in the lever, the sliding plate is close to the fixed big fixed block that is equipped with of fan motor one end, the fixed first slip post that is equipped with in big fixed block front end, first slip post front end extends to and keeps away from fan motor one side the intracavity and sliding connection slide connect slide, fan motor is controlled both ends symmetry and is equipped with little fixed block, the fixed second slip post that is equipped with in little fixed block front end, second slip post front end extends to be close to fan motor one side slide intracavity and sliding connection.

Preferably, the reel device includes that symmetry just fixes locating around the reel device the bracing piece of connecting plate up end left end, front and back both sides rotate between the bracing piece and are connected with the reel axle, the fixed reel that is equipped with of the outer disc of reel axle, the fixed turbine that is equipped with in reel axle rear end, reel coaxial coupling is equipped with the turbine, the turbine right side is equipped with fixedly locating the support frame of connecting plate up end, run through about the top in the support frame and rotate be connected with the worm of turbine upper end meshing.

Preferably, the lower end of the fixing plate is fixedly provided with a longitudinal sliding block which is connected with the lower wall of the movable cavity in a front-back sliding mode, the longitudinal sliding block is internally penetrated through the longitudinal sliding block in a front-back mode and is connected with a longitudinal screw rod which is connected between the front wall and the rear wall of the movable cavity in a rotating mode through threads, the front wall of the movable cavity is internally fixedly provided with a longitudinal motor, the front end of the longitudinal screw rod is connected with the rear end of the longitudinal motor in a power mode, the left end of the upper end face of the fixing plate is fixedly provided with a transverse motor.

Preferably, a supporting block is fixedly arranged at the right end of the fixing plate, the right end of the transverse screw rod extends into the supporting block and is rotatably connected with the supporting block, a roller cavity is arranged in the lower end face of the supporting block, a fixing shaft is fixedly connected between the left wall and the right wall of the roller cavity, and a roller shaft is rotatably connected to the outer circular face of the fixing shaft.

Preferably, the left end face of the transverse sliding block is rotatably connected with a sleeve surrounding the transverse screw, a key groove is formed in the outer circular face of the transverse screw, a key capable of sliding left and right in the key groove is fixedly formed in the inner circular wall of the sleeve, a driving pulley is fixedly arranged at the left end of the sleeve, the worm right end extends to the worm right side is fixedly arranged on the driven pulley which is located above the rear portion of the driving pulley, a stepping groove which is located above the driving pulley is formed in the connecting plate in a penetrating mode, and the driven pulley and the driving pulley are wound to be provided with belts which penetrate through the stepping groove.

Preferably, clamping device includes that symmetry and fixed locate the fixed block of both ends face around the socket, the fixed block up end rotates and is connected with the dwang, dwang right-hand member longitudinal symmetry and fixed being equipped with are located the jack catch on socket right side, upper and lower both sides the jack catch can press from both sides tightly the one end upper and lower both sides of plug connection electric wire, the fixed electro-magnet that is equipped with of both ends face around the socket, the electro-magnet can with the dwang adsorbs.

The invention has the beneficial effects that: according to the invention, the charging part of the charging pile is of a movable structure, the drawer can be moved to be opposite to the left side of the electric vehicle according to different parking positions of the electric vehicle, so that the charger can be conveniently placed in the drawer, the convenience in use is improved, the plug cannot accidentally fall off by clamping the plug through the clamping jaw, the stability is improved, the cooling device is adopted, the charger is prevented from being damaged due to overheating, the cooling device can be started only when the charger is placed in the drawer, and the energy loss caused by accidental starting of a fan is avoided.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

Fig. 1 is a schematic overall structure diagram of a charger protection device with a safety protection function according to the present invention;

FIG. 2 is a schematic view of the structure in the direction "A-A" of FIG. 1;

FIG. 3 is an enlarged view of the structure of "B" in FIG. 1;

FIG. 4 is an enlarged view of the structure of "C" of FIG. 3;

FIG. 5 is a schematic view of the structure in the direction "D-D" of FIG. 1;

FIG. 6 is a schematic view of the structure in the direction "E-E" of FIG. 3.

Detailed Description

The invention will now be described in detail with reference to fig. 1-6, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The charger protection device with the safety protection function comprises acharging pile 11, adrawer cavity 60 with a right opening is arranged at the top in thecharging pile 11, adrawer 61 is arranged in thedrawer cavity 60 and can slide left and right, aplacing cavity 62 with an upward opening is arranged in thedrawer 61, a placingplate 12 for supporting a charger is arranged in theplacing cavity 62, atemperature sensing block 19 is fixedly arranged at the left end of the lower wall of thedrawer cavity 62, acooling device 101 is arranged at the lower side of the placingplate 12, thecooling device 101 comprises afan cavity 63 communicated with the lower wall of theplacing cavity 62, the lower wall of thefan cavity 63 is rotatably connected with afan shaft 14,fans 64 are symmetrically and fixedly arranged at the left and right ends of the outer circular surface of thefan shaft 14, slidingcavities 65 communicated with the lower wall of the placingcavity 62 are symmetrically arranged at the left and right sides of thefan cavity 63, slidingplates 13 are arranged in thesliding cavity 65 and can slide, the placingplate 12 is fixedly arranged at the upper ends of thesliding plates 13 at the left and right sides, amotor cavity 66 is arranged below thefan cavity 63 and right opposite to thefan shaft 14, afan motor 16 is arranged in themotor cavity 66 and can slide up and down, aspline 51 is connected to the upper end of thefan motor 16 in a power mode, aspline groove 52 with a downward opening is arranged in thefan shaft 14, thespline 51 can extend upwards into thespline groove 52 and is in spline connection, a lever mechanism 105 is arranged between thefan motor 16 and thesliding plates 13 at the left and right sides, when the charger is placed above theplacing plate 12, theplacing plate 12 is pressed downwards by the gravity of the charger and drives thesliding plate 13 to descend, the lever mechanism 105 drives thefan motor 16 to ascend until thespline 51 extends into thespline groove 52, and the lower end of the left end face of thedrawer 61 is fixedly provided with a connectingplate 29, the upper end of the connectingplate 29 is fixedly provided with asocket 20, the left end of thesocket 20 is fixedly and electrically connected with anelectric wire 22, the left side of thesocket 20 is provided with a wirewinding wheel device 102 for releasing and winding theelectric wire 22, the front side and the back side of thesocket 20 are symmetrically provided with clamping devices 106, when a charger plug is inserted into the right end face of thesocket 20, the charger plug can be clamped through the clamping devices 106 to avoid the plug from accidentally dropping, the lower side of thedrawer cavity 60 is provided with a movingdevice 103 for controlling the connectingplate 29 to move forwards and backwards and leftwards, the movingdevice 103 comprises a movingcavity 68 communicated with the lower side of thedrawer cavity 60, afixing plate 38 capable of moving forwards and backwards is arranged in the movingcavity 68, the upper end face of thefixing plate 38 is provided with a transverse slidingblock 33 capable of moving left, thewinding wheel device 102 is connected with the lateral slidingblock 33 through power for moving left and right, when the lateralsliding block 33 drives thedrawer 61 to move right through the connectingplate 29, thewinding wheel device 102 is driven to release theelectric wire 22, and thefixing plate 38 drives thedrawer 61 to move back and forth to adjust the front and back positions.

Advantageously, aspring 18 is fixedly connected between the lower end of thesliding plate 13 and the lower wall of thesliding chamber 65, and thespring 18 provides power for the lifting and returning of thesliding plate 13.

Advantageously, the lever mechanism 105 compriseslever cavities 75 symmetrically and communicated with the left and right sides of themotor cavity 66 and respectively communicated with the left and right slidingcavities 65, a connectingshaft 50 is fixedly arranged between the front wall and the rear wall of thelever cavity 75, alever 17 is rotatably connected on the outer circular surface of the connectingshaft 50, slidingcavities 76 are symmetrically arranged at the left end and the right end in thelever 17 in a penetrating manner, alarge fixing block 48 is fixedly arranged at one end of thesliding plate 13 close to thefan motor 16, the front end of the bigfixed block 48 is fixedly provided with a first slidingcolumn 49, the front end of the first slidingcolumn 49 extends into thesliding cavity 76 at the side far away from thefan motor 16 and is connected with the sliding cavity in a sliding way, the left and right ends of thefan motor 16 are symmetrically provided withsmall fixing blocks 77, the front ends of thesmall fixing blocks 77 are fixedly provided with secondsliding columns 78, the front end of the second slidingcolumn 78 extends into thesliding cavity 76 near one side of thefan motor 16 and is connected in a sliding manner.

Beneficially, thewinding wheel device 102 includes asupport rod 28 which is symmetrical in front and back and is fixedly arranged at the left end of the upper end face of the connectingplate 29, awinding wheel shaft 71 is rotatably connected between thesupport rod 28 at the front side and the back side, awinding wheel 27 is fixedly arranged on the outer circular surface of thewinding wheel shaft 71, aturbine 39 is fixedly arranged at the rear end of thewinding wheel shaft 71, theturbine 39 is coaxially connected to thewinding wheel 27, asupport frame 24 fixedly arranged on the upper end face of the connectingplate 29 is arranged at the right side of theturbine 39, and aworm 25 engaged with the upper end of theturbine 39 penetrates through and is rotatably connected to the left and right.

Advantageously, the lower end of thefixed plate 38 is fixedly provided with alongitudinal slide block 43 which is slidably connected with the lower wall of themovable cavity 68 back and forth, alongitudinal screw 44 which is rotatably connected between the front wall and the rear wall of themovable cavity 68 is penetrated and screwed in thelongitudinal slide block 43, the front wall of themovable cavity 68 is fixedly provided with alongitudinal motor 45, the front end of thelongitudinal screw 44 is dynamically connected with the rear end of thelongitudinal motor 45, the left end of the upper end surface of thefixed plate 38 is fixedly provided with atransverse motor 31, and the right end of thetransverse motor 31 is dynamically connected with atransverse screw 41 which is screwed in thetransverse slide block 33.

Advantageously, the right end of thefixing plate 38 is fixedly provided with a supportingblock 36, the right end of thetransverse screw 41 extends into the supportingblock 36 and is rotatably connected, aroller cavity 79 is arranged in the lower end face of the supportingblock 36, afixing shaft 42 is fixedly connected between the left wall and the right wall of theroller cavity 79, and aroller shaft 37 is rotatably connected to the outer circular surface of thefixing shaft 42.

Beneficially, the left end face of thetransverse slider 33 is rotatably connected with asleeve 34 surrounding thetransverse screw 41, akey groove 35 is formed in the outer circular face of thetransverse screw 41, akey 32 capable of sliding left and right in thekey groove 35 is fixedly arranged on the inner circular wall of thesleeve 34, adriving pulley 30 is fixedly arranged at the left end of thesleeve 34, the right end of theworm 25 extends to the right side of theworm 25 and is fixedly provided with a drivenpulley 23 located above the rear of thedriving pulley 30, a abdicatinggroove 80 located above thedriving pulley 30 is formed in the connectingplate 29 in a vertically penetrating manner, and abelt 26 penetrating through the abdicatinggroove 80 is arranged between the drivenpulley 23 and thedriving pulley 30.

Beneficially, clamping device 106 includes symmetry and fixed the locating thefixed block 47 of both ends face aroundsocket 20, fixedblock 47 up end rotates and is connected withdwang 21, dwang 21 right-hand member longitudinal symmetry and fixed being equipped with are locatedjack catch 46 onsocket 20 right side, upper and lower bothsides jack catch 46 can press from both sides tightly the one end upper and lower both sides of plug connection electric wire,socket 20 front and back both ends face is fixed and is equipped with electro-magnet 85, electro-magnet 85 can with dwang 21 adsorbs.

The following describes in detail the use steps of a safety protection device for a charger with reference to fig. 1 to 6: in the initial state, thedrawer 61 and thelink plate 29 are positioned in thedrawer chamber 60, thewire winding wheel 27 winds and stores theelectric wire 22, thelateral slider 33 is positioned at the left limit position in themovement chamber 68, and thelongitudinal slider 43 is positioned at the intermediate position in the front-rear direction of themovement chamber 68.

When charging, thetransverse motor 31 is started and drives thetransverse screw rod 41 to rotate, the transverse slidingblock 33 is driven to move rightwards through threaded connection, the connectingplate 29 drives thedrawer 61 to move rightwards to the right side of thecharging pile 11, thetransverse screw rod 41 rotates and simultaneously drives thesleeve 34 to synchronously rotate through thekey 32, thedriving belt wheel 30 is driven to rotate, thebelt 26 drives the drivenbelt wheel 23 to rotate and drives theworm 25 to rotate, the gear meshing drives theworm wheel 39 to rotate in a speed reduction manner, thewinding wheel 27 is driven to rotate, theelectric wire 22 is released, when an electric vehicle to be charged is parked right to thecharging pile 11, the electric vehicle charger is placed in the placingcavity 62, the charger plug is inserted into thesocket 20, theelectromagnet 85 is electrified to generate magnetism, theadsorption rotating rod 21 is close to thesocket 20, and the plug is locked through theclamping claws 46, when the electric vehicle is parked at the right front or the right rear of thecharging pile 11, when thecontrol drawer 61 moves right to thecharging pile 11, thelongitudinal motor 45 is started and drives thelongitudinal screw 44 to rotate, thelongitudinal slide block 43 is driven to move forward or backward through threaded connection, thefixing plate 38 is driven to move forward or backward through rolling support of theroller shaft 37, thedrawer 61 is driven to move forward or backward through thetransverse slide block 33 and the connectingplate 29, according to the specific parking position of the electric vehicle, thedrawer 61 is moved to the left side of the electric vehicle, then the electric vehicle charger is placed in theplacing cavity 62, the charger plug is inserted into thesocket 20 and locked through theclaw 46, when the charger is placed in the placingcavity 62, theplacing plate 12 is pressed down through the gravity of the charger and thesliding plate 13 is driven to descend, thelarge fixing block 48 and the first slidingcolumn 49 are driven to descend, the first slidingcolumn 49 slides in thesliding cavity 76 and drives thelever 17 to turn downwards at one end far away from the, at this time, one end of thelever 17 close to thefan motor 16 is turned upwards and drives the second slidingcolumn 78 to ascend, and then thelever 16 is driven to ascend through thesmall fixing block 77, and further thespline 51 is driven to extend into thespline groove 52 and connected with the spline; when thetemperature sensing block 19 detects that the temperature of the charger is too high, thefan motor 16 is started and drives thespline 51 to rotate, and thefan shaft 14 is driven to rotate and thefan 64 is driven to rotate through the spline connection, so that the charger is cooled.

The invention has the beneficial effects that: according to the invention, the charging part of the charging pile is of a movable structure, the drawer can be moved to be opposite to the left side of the electric vehicle according to different parking positions of the electric vehicle, so that the charger can be conveniently placed in the drawer, the convenience in use is improved, the plug cannot accidentally fall off by clamping the plug through the clamping jaw, the stability is improved, the cooling device is adopted, the charger is prevented from being damaged due to overheating, the cooling device can be started only when the charger is placed in the drawer, and the energy loss caused by accidental starting of a fan is avoided.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims (2)

1. The utility model provides a charger protection device with safety protection function, is including filling electric pile, its characterized in that: the charging pile is characterized in that a drawer cavity with a right opening is formed in the top in the charging pile, a drawer is arranged in the drawer cavity and can slide left and right, a placing cavity with an upward opening is formed in the drawer, a placing plate for supporting a charger is arranged in the placing cavity, a temperature sensing block is fixedly arranged at the left end of the lower wall of the drawer cavity, a cooling device is arranged at the lower side of the placing plate and comprises a fan cavity communicated with the lower wall of the placing cavity, the lower wall of the fan cavity is rotatably connected with a fan shaft, fans are symmetrically and fixedly arranged at the left end and the right end of the outer circular surface of the fan shaft, sliding cavities communicated with the lower wall of the placing cavity are symmetrically arranged at the left end and the right end of the fan cavity, sliding plates are arranged in the sliding cavities and can slide up and down, the placing plate is fixedly arranged at the upper ends of the sliding plates, a motor cavity, the upper end of the fan motor is in power connection with a spline, a spline groove with a downward opening is arranged in the fan shaft, the spline can extend upwards into the spline groove and is in spline connection with the spline groove, a lever mechanism is arranged between the fan motor and the sliding plates on the left side and the right side, when a charger is placed above the placing plate, the placing plate is pressed downwards by the gravity of the charger and drives the sliding plates to descend, and then the lever mechanism drives the fan motor to ascend until the spline extends into the spline groove, a connecting plate is fixedly arranged at the lower end of the left end face of the drawer, a socket is fixedly arranged at the upper end of the connecting plate, an electric wire is fixedly and electrically connected at the left end of the socket, a wire winding wheel device for releasing and winding the electric wire is arranged at the left side of the socket, clamping devices are symmetrically arranged at the front side and, the charger plug can be clamped through the clamping device to avoid the plug from accidentally falling, a moving device for controlling the connecting plate to move forwards and backwards and leftwards is arranged at the lower side of the drawer cavity, the moving device comprises a moving cavity communicated with the lower side of the drawer cavity, a fixed plate capable of moving forwards and backwards is arranged in the moving cavity, a transverse sliding block capable of moving leftwards and rightwards is arranged on the upper end face of the fixed plate, the upper end of the transverse sliding block is fixedly connected with the lower end face of the connecting plate, the winding wheel device is connected with the left and right moving power of the transverse sliding block, the transverse sliding block drives the drawer to move rightwards through the connecting plate and simultaneously drives the winding wheel device to release the electric wire, the drawer is driven by the fixed plate to move forwards and backwards to adjust the front and back position, the winding wheel device comprises, a reel shaft is rotatably connected between the support rods on the front side and the rear side, a reel is fixedly arranged on the outer circular surface of the reel shaft, a turbine is fixedly arranged at the rear end of the reel shaft, the reel is coaxially connected with the turbine, a support frame fixedly arranged on the upper end surface of the connecting plate is arranged on the right side of the turbine, and a worm meshed with the upper end of the turbine is penetrated through and rotatably connected to the left and right of the top in the support frame; a spring is fixedly connected between the lower end of the sliding plate and the lower wall of the sliding cavity and provides power for the lifting and resetting of the sliding plate; the lever mechanism comprises lever cavities which are symmetrically arranged on the left side and the right side of the motor cavity in a communicated manner and are respectively communicated with the sliding cavities on the left side and the right side, connecting shafts are fixedly arranged between the front wall and the rear wall of the lever cavities, levers are rotatably connected to the outer circular surface of the connecting shafts, sliding cavities are symmetrically arranged in the levers at the left end and the right end in a penetrating manner, a large fixing block is fixedly arranged at one end, close to the fan motor, of the sliding plate, a first sliding column is fixedly arranged at the front end of the large fixing block, the front end of the first sliding column extends into the sliding cavity on one side, far away from the fan motor, and is in sliding connection with the sliding cavity, small fixing blocks are symmetrically arranged at the left end and the right end of the fan motor, a second sliding column is fixedly arranged at the front; the lower end of the fixed plate is fixedly provided with a longitudinal sliding block which is connected with the lower wall of the movable cavity in a front-back sliding manner, a longitudinal screw rod which is rotatably connected between the front wall and the rear wall of the movable cavity is penetrated in the longitudinal sliding block in a front-back penetrating manner and is in threaded connection, the front wall of the movable cavity is fixedly provided with a longitudinal motor, the front end of the longitudinal screw rod is in power connection with the rear end of the longitudinal motor, the left end of the upper end surface of the fixed plate is fixedly provided with a transverse motor, and the right end of the transverse motor; a supporting block is fixedly arranged at the right end of the fixing plate, the right end of the transverse screw rod extends into the supporting block and is rotatably connected with the supporting block, a roller cavity is arranged in the lower end face of the supporting block, a fixing shaft is fixedly connected between the left wall and the right wall of the roller cavity, and the outer circular surface of the fixing shaft is rotatably connected with a roller shaft; the transverse sliding block left end face is connected with and encircles in the sleeve of transverse screw rod, be equipped with the keyway in the outer disc of transverse screw rod, the fixed ability that is equipped with of the interior circular wall of sleeve can horizontal gliding key in the keyway, the fixed driving pulley that is equipped with in sleeve left end, the worm right-hand member extends to the fixed driven pulley that is equipped with in worm right side the driving pulley rear upper side, run through from top to bottom in the connecting plate and be equipped with and be located the groove of stepping down of driving pulley top, driven pulley with around being equipped with between the driving pulley pass the belt in the groove of stepping down.

2. The charger protection device with safety protection function as claimed in claim 1, wherein: clamping device includes symmetry and fixed the locating the fixed block of both ends face around the socket, the fixed block up end rotates and is connected with the dwang, dwang right-hand member longitudinal symmetry and fixed being equipped with are located the jack catch on socket right side, upper and lower both sides the jack catch can press from both sides tightly the one end upper and lower both sides of plug connection electric wire, the fixed electro-magnet that is equipped with of both ends face around the socket, the electro-magnet can with the dwang adsorbs.

Images