Portable direct current charging pile for emergency rescue

Abstract

The embodiment of the invention provides a portable direct current charging pile for emergency rescue, and relates to the technical field of charging piles. The portable direct-current charging pile for emergency rescue comprises a shell and a charging wire. A base is arranged at the bottom of the shell, rolling wheels are installed on the lower surface of the base, and a telescopic rod is connected between the base and the shell; the winding wheel is rotationally installed on the upper surface of the base, a winding shaft is coaxially fixed to the winding wheel, a clockwork spring is wound on the winding shaft, and the cable is wound in a cable groove in the surface of the winding wheel. According to the portable direct-current charging pile for emergency rescue, the self-locking universal wheels on the lower surface of the base are used for pushing equipment to move, the universal wheels support all-directional steering and can flexibly move on the road surface, and the moving efficiency is improved; automatic take-up and pay-off are achieved, take-up time is short, operation efficiency is improved, operation burdens of rescue workers are reduced, and the workers can concentrate on core rescue tasks.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of charging piles, in particular to a portable direct-current charging pile for emergency rescue. BACKGROUND

[0002] At present, the charging pile has functions similar to the refueling machine in the gas station, can be fixed on the ground or wall, installed in the parking lot of public buildings and residential areas or charging station, can charge various types of electric vehicles according to different voltage levels, the input end of the charging pile is directly connected with the alternating current power grid, and the output end is provided with a charging plug for charging electric vehicles. The charging pile generally provides two charging modes of conventional charging and fast charging. People can use a specific charging card to swipe on the man-machine interactive operation interface provided by the charging pile, and perform corresponding operations such as charging mode, charging time, and fee data printing. The charging pile display screen can display charging capacity, cost, charging time and other data.

[0003] The authorized announcement number CN 210011620 U, authorized announcement date 2020.02.04, discloses a kind of portable electric vehicle charging pile, including charging pile body, be located on the charging gun of charging pile body and charging hole, the charging pile body is located in box, the upper cover is hinged on the box, the front end wall of the box is equipped with sliding slot and two cooperation slots, two limit slots are equipped on the inner wall of the cooperation slot, the cooperation slot is communicated with sliding slot, the sliding slot is equipped with pull-out plate, and the front end surface of pull-out plate is fixedly connected with two limit mechanisms, and two limit mechanisms are fixedly connected by holding rod between two limit mechanisms, recess is equipped on the both ends of the side wall of the box;The limit mechanism includes limit column, two limit blocks in the limit column.The portable electric vehicle charging pile has strong environmental adaptability and is easy to carry, can reduce the influence of external factors on the charging pile and the charging pile peripheral equipment, and only needs to adjust the pull-out plate mechanism on the box to conveniently take out the charging gun when charging the car, convenient operation; The prior art in the above has the following defects: the charging line of the charging gun needs to be manually coiled and stored, and in an emergency, it can be directly dragged and taken away, which can easily cause a series of sudden conditions such as loss, hanging, damage and breakage of accessories during carrying, resulting in that the charging pile cannot be used practically and unnecessary trouble is caused. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. The portable direct-current charging pile for emergency rescue according to the embodiments of the present application includes a shell and a charging line. The bottom of the shell is provided with a base, the lower surface of the base is provided with a rolling wheel, and the base is connected with the shell through an extension rod; the charging wire comprises a winding wheel and a cable, the winding wheel is rotatably arranged on the upper surface of the base, the winding wheel is coaxially fixed with a winding shaft, the winding shaft is wound with a clockwork spring, and the cable is wound in the wire groove on the surface of the winding wheel.

[0005] The portable direct-current charging pile for emergency rescue according to the embodiment of the application has the following advantages: After reaching the charging point, the shell is pulled upward, the shell slides upward along the extension rod and the limiting rod, the base is completely separated from the bottom of the shell, and the charging wire is exposed outside, so that the whole unfolding process only needs to be operated by a person, the time consumption is short, and the needs of emergency rescue and time urgency are met.

[0006] The length of the cable needs to be adjusted according to the position of the device to be charged at the rescue site, the operator holds the charging gun head at the end of the cable and pulls it away from the device, the cable drives the winding wheel to rotate around the winding shaft on the wheel frame, the clockwork spring in the winding shaft is tightened with the rotation, and the pulling force is converted into elastic potential energy; at the same time, the cable slides along the guide wheel to ensure that it is pulled out along the specified route, and the process is smooth without jamming. When the cable is pulled out to the target length, the winding shaft drives the ratchet to rotate, the pawl is clamped into the ratchet tooth groove under the action of the spring, the reverse rotation of the winding shaft is prevented, and the length of the cable is kept unchanged without the need for manual knotting and fixing, so as to avoid the operation delay caused by traditional cable winding and knotting, and realize flexible adaptation of the charging distance.

[0007] The operator holds the handle at the top of the shell and moves the device by using the self-locking universal wheel on the lower surface of the base, the universal wheel supports omnidirectional steering, can be flexibly moved on the road surface, and the moving efficiency is improved; automatic winding and unwinding of the cable is realized, the winding time is short, the operation efficiency is improved, the operation burden of the rescuer is reduced, and the rescuer can focus on the core rescue task.

[0008] The design of the guide wheel and the wire groove ensures that the cable is uniformly wound and unwound without winding and jamming, the service life of the cable is prolonged, and the maintenance cost is reduced; the problem that the cable of the traditional portable charging pile needs to be manually pulled out and fixed and needs to be manually wound when winding is solved, and the time consumption of winding and unwinding of the cable is reduced.

[0009] In addition, the portable direct-current charging pile for emergency rescue according to the embodiment of the application also has the following additional technical features: In a preferred mode of the application, a handle is fixed to the top of the shell, an insulating sheath is arranged on the outer surface of the handle, and a light switch for cutting off the main power supply is embedded in the insulating sheath.

[0010] In a preferred mode of the present application, the telescopic rod is installed at the rear end of the shell, a limiting rod is arranged at the front end of the shell, the lower end of the limiting rod is fixed to the base, a limiting sleeve is arranged on the surface of the limiting rod, and the limiting sleeve is fixed to the shell.

[0011] In a preferred mode of the present application, the telescopic rod is arranged in parallel with the limiting rod, and the telescopic rod and the limiting rod are arranged at the corners of the shell.

[0012] In a preferred mode of the present application, the shell is embedded with a display screen, the display screen is arranged obliquely at the front end of the shell, a straight insertion port is installed below the display screen, and a dust cover is arranged on the straight insertion port. The operator can stand and view the display screen arranged obliquely at the front end of the shell to obtain real-time data such as charging voltage, current, and remaining power. If overload, short circuit, or other faults occur, the device automatically cuts off the power supply, or manually cuts off the total power supply through the tactile switch at the handle, to avoid equipment damage or electric shock risk. The straight insertion port is arranged to facilitate the insertion of the charging gun head into the interface of the device to be charged, or the connection of the device through the straight insertion port. The charging pile module is electrically connected with the cable through the electric slip ring to meet the voltage requirements of different devices.

[0013] In a preferred mode of the present application, charging gun heads are arranged at both ends of the cable, a wheel frame is fixed to the base, the winding shaft is rotatably installed at the upper end of the wheel frame, a guide wheel is fixed to the base, and the outer surface of one end of the cable is in contact with the guide wheel.

[0014] In a preferred mode of the present application, the shell is embedded with a charging pile module, the charging pile module is arranged at the top of the charging cable, the winding wheel is coaxially installed with an electric slip ring, and the charging pile module is electrically connected with the cable through the electric slip ring.

[0015] In a preferred mode of the present application, a heat dissipation hole is arranged at the upper end of the shell, the heat dissipation hole is arranged on both sides of the shell, a heat dissipation fan is embedded in the shell, and the heat dissipation fan is installed at a position opposite to the heat dissipation hole. During the charging process, the heat generated by the charging pile module is discharged through the heat dissipation holes on both sides of the shell, and the embedded heat dissipation fan accelerates air circulation to control the module temperature below ℃.

[0016] In a preferred mode of the present application, a ratchet and pawl mechanism for locking the rotation of the winding wheel is further included, and a release button for releasing the locking is further included. The roller is a self-locking universal wheel. If temporary fixation is required, the self-locking pedal of the universal wheel is stepped on to prevent the device from sliding in the rescue site.

[0017] When the cable is pulled out, the external force drives the winding shaft to rotate, and the winding shaft will "tighten" the internal spring to convert the pulling force into the elastic potential energy of the spring. When the hand is released, the clockwork spring wants to rebound, the ratchet wheel is clamped by the pawl when rotating with the winding shaft, the winding shaft cannot rotate, and the cable remains the current length; When the winding is unlocked, the release button is pressed, the button drives the pawl to disengage from the ratchet wheel, the clockwork spring releases the elastic potential energy, drives the winding shaft to rotate in the opposite direction, uniformly winds the cable back on the shaft, and completes the automatic winding.

[0018] In a preferred mode of the present application, the shell side wall is provided with a photovoltaic panel, the upper end of the photovoltaic panel is hinged with the shell through a damping hinge, and a folding support is connected between the inner wall of the photovoltaic panel and the shell. Fold the photovoltaic panel of the shell side wall, fold the folding support, pull out from the inner wall of the photovoltaic panel and the shell, support the photovoltaic panel to keep stable, and the folding support can be fixed at any angle to adapt to different light directions. Under sunny conditions, it supplements the charging pile module with electric energy, prolongs the endurance time. The electric energy generated by the photovoltaic panel is preferentially charged to the built-in battery of the charging pile, or directly powers the small emergency equipment.

[0019] The independent locking and buffering assembly increases the overall volume of the device, reduces portability, and separates the locking and buffering functions, which is poor in portability and weak in anti-falling ability. Referring to the specific embodiments of the portable direct current charging pile for emergency rescue according to the present application, the following is described: In a preferred mode of the present application, the telescopic rod includes a guide sleeve and a sliding rod, the guide sleeve is fixedly connected with the shell, the lower end of the sliding rod is fixedly connected with the base, the upper end of the sliding rod is slidingly inserted into the guide sleeve, a compression spring is arranged on the lower end of the sliding rod, the upper end of the compression spring abuts against the lower end of the guide sleeve, and a limiting block is slidingly connected in the guide sleeve; the shell is internally provided with a clamping mechanism for locking the limiting block.

[0020] In a preferred mode of the present application, the clamping mechanism includes a shell, a lock tongue and an unlocking button, the lock tongue is slidingly connected with the shell, the lower end of the unlocking button is slidingly connected with the shell, the shell is fixedly connected with the inner wall of the shell, one end of the lock tongue is clamped with the limiting block, and the unlocking button is used to drive the lock tongue to slide and unlock.

[0021] The sliding rod stably slides along the inner wall of the guide sleeve, when the limiting block at the end of the sliding rod is precisely clamped with the lock tongue, the compression spring sleeved outside the sliding rod is synchronously compressed, the base and the bottom of the shell are in close sealing contact, the whole device enters the locked state, at this time, the compression spring in the compressed state can buffer external impact through elastic deformation, such as transportation bumping and accidental collision, and plays a role of anti-falling protection; when the device needs to be used, the unlocking button is manually pressed, the lock tongue is disengaged from the clamping of the limiting block, the elastic potential energy of the compression spring is released, the shell is pushed to slide upward along the guide sleeve, and the originally hidden charging wire is completely exposed, which is convenient for subsequent cable pulling operation; at the same time, after the base and the shell are separated, a ventilation gap is formed, external airflow can enter the device from the gap, cooperate with the internal heat dissipation component (such as a heat dissipation fan) to accelerate air circulation, significantly improve the heat dissipation efficiency of the device, and avoid overloading of the charging pile module due to high temperature.

[0022] The unlocking mechanism of the conventional device is mostly a knob, a single connecting rod or a pull wire structure, the unlocking mechanism is complex to operate, and the emergency response efficiency is low. Referring to the specific embodiments of the portable direct-current charging pile for emergency rescue according to the present application, the following is described: In a preferred mode of the present application, a rotating shaft is rotatably installed in the shell, a tooth column is coaxially fixed to the rotating shaft, a main rack is engaged with the tooth column, the main rack is fixed with the unlocking button, a slave rack is also engaged with the tooth column, the slave rack is fixedly connected with the lock tongue, and a torsional spring is sleeved on the rotating shaft for driving the rotating shaft to reset.

[0023] In a preferred mode of the present application, two slave racks are provided, the two slave racks are rotationally symmetrically arranged, two lock tongues are symmetrically arranged, the lock tongues are arranged in one-to-one correspondence with the slave racks, two telescopic rods are provided, a through groove is formed in the side wall of the guide sleeve, and one end of the lock tongue is slidably inserted into the through groove.

[0024] When the unlocking button is pressed, the button drives the main rack to slide in the horizontal direction through the transmission member, the main rack is engaged with the tooth column for transmission, and then drives the rotating shaft coaxially fixed with the tooth column to rotate synchronously; the rotating tooth column is engaged with the slave rack at the same time, drives the slave rack to slide in the opposite direction, and the lock tongue fixedly connected with the slave rack slides horizontally at the same time, finally makes the lock tongue away from the limiting block on the sliding rod, and completes the unlocking action; after the unlocking button is released, the torsional spring sleeved on the rotating shaft releases the pre-stored torsional force, drives the rotating shaft and the tooth column to rotate reversely, reversely pulls the lock tongue through the rack engagement transmission, and makes the lock tongue automatically slide to reset, waiting for the next locking operation.

[0025] In a preferred mode of the present application, a first magnet is embedded on the upper surface of the base, a second magnet is embedded on the lower end surface of the shell, the first magnet and the second magnet are oppositely arranged, and the opposite surfaces of the first magnet and the second magnet are magnetically opposite.

[0026] During carrying, the base is easy to be separated from the shell, unnecessary troubles are caused, and transportation is affected, therefore, according to the specific implementation of the portable direct current charging pile for emergency rescue in the application, the following refers to the drawings: In a preferred mode of the present application, a locking mechanism is further included, which comprises a push block and a sliding rod, the sliding rod is slidingly connected with the shell, the push block is slidingly connected with the shell, a limiting groove is formed on the surface of the sliding rod, the upper end of the push block is slidingly inserted into the limiting groove, the push block is provided with a first elastic member, one end of the sliding rod is provided with a second elastic member, the sliding rod is fixedly connected with a clamping block, a clamping groove is formed on the lower surface of the base, the clamping groove is matched with the clamping block, a push rod is slidingly inserted into the base, and the push rod is arranged above the push block.

[0027] The upper end of the push block is slidingly inserted into the limiting groove formed on the surface of the sliding rod, under the pushing action of the first elastic member installed at the lower end of the push block, the sliding rod is shifted and the second elastic member at the end of the sliding rod is compressed, the base is arranged above the shell, when the base moves downward, the upper surface of the shell is clamped, at the same time, the push rod arranged above the push block moves downward to push the push block, the compressed second elastic member pushes the sliding rod, the clamping block fixed on the surface of the sliding rod is matched with the clamping groove formed on the lower surface of the base, the locking of the base and the shell is realized, relative movement is prevented, the connection between the base and the shell is tight, good sealing effect can be achieved, and opening during carrying is prevented.

[0028] In a preferred mode of the present application, the shell is provided with a first sliding groove, the sliding rod is slidingly connected in the first sliding groove, a second sliding groove is formed at the bottom of the first sliding groove, and the lower end of the push block is inserted into the second sliding groove.

[0029] In a preferred mode of the present application, under the condition that the push block is not subjected to external force, the first elastic member pulls the push block, so that the push block moves away from the sliding rod, the first elastic member is a tension spring, the second elastic member is a compression spring, the first elastic member is arranged at the bottom of the second sliding groove, and the second elastic member is arranged in the first sliding groove.

[0030] Additional aspects and advantages of the application will be set forth in part in the following description, will become apparent to those skilled in the art from the following description, or will be learned from practicing the application. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0032] Figure 1 is a schematic diagram of the three-dimensional structure of the portable DC charging pile for emergency rescue provided by the embodiment of the present application; Figure 2 is a schematic diagram of the cutaway structure of the shell provided by the embodiment of the present application; Figure 3 is a schematic diagram of the telescopic rod structure provided by the embodiment of the present application; Figure 4 is a schematic diagram of the three-dimensional structure of the charging wire provided by the embodiment of the present application; Figure 5 is a schematic diagram of the three-dimensional structure of the clamping mechanism provided by the embodiment of the present application; Figure 6 is a schematic diagram of the three-dimensional structure of the shell interior provided by the embodiment of the present application; Figure 7 is a schematic diagram of the torsional spring installation position provided by the embodiment of the present application; Figure 8 is a schematic diagram of the cutaway structure of the base and shell interface provided by the embodiment of the present application; Figure 9 is a schematic diagram of the locking mechanism structure provided by the embodiment of the present application; Figure 10 is a schematic diagram of the sliding rod structure provided by the embodiment of the present application; Figure 11 is a schematic diagram of the clamping groove structure provided by the embodiment of the present application.

[0033] In the figure: 100, shell; 101, handle; 103, display screen; 105, straight insertion port; 107, heat dissipation hole; 110, base; 111, roller; 113, wheel carrier; 115, clamping groove; 109, push rod; 130, telescopic rod; 131, guide sleeve; 133, sliding rod; 135, compression spring; 137, limiting block; 150, limiting rod; 151, limiting sleeve; 170, charging pile module; 300, charging wire; 310, winding wheel; 311, wire winding shaft; 330, cable; 331, charging gun head; 350, guide wheel; 500, clamping mechanism; 510, shell; 511, rotating shaft; 513, tooth column; 515, main rack; 517, slave rack; 519, torsional spring; 530, locking tongue; 550, unlocking button; 700, locking mechanism; 710, push block; 711, first elastic member; 730, sliding rod; 731, limiting groove; 733, clamping block; 735, second elastic member. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0036] The following describes a portable DC charging station for emergency rescue according to an embodiment of this application with reference to the accompanying drawings; like Figures 1-11 As shown, a portable DC charging station for emergency rescue according to an embodiment of this application includes a housing 100 and a charging cable 300; The bottom of the housing 100 is provided with a base 110, and a roller 111 is installed on the lower surface of the base 110. A telescopic rod 130 is connected between the base 110 and the housing 100. The charging cable 300 includes a winding wheel 310 and a cable 330. The winding wheel 310 is rotatably mounted on the upper surface of the base 110. A winding spool 311 is coaxially fixed to the winding wheel 310. A spring is wound on the winding spool 311. The cable 330 is wound in the groove on the surface of the winding wheel 310.

[0037] Portable DC charging station for emergency rescue according to embodiments of this application: Upon reaching the charging point, pull the outer shell 100 upwards. The outer shell 100 slides upwards along the telescopic rod 130 and the limiting rod 150, completely separating the base 110 from the bottom of the outer shell 100, exposing the charging cable 300. The entire unfolding process requires only one person to operate, is quick, and meets the needs of emergency rescue where every second counts.

[0038] At the rescue site, the cable length needs to be adjusted according to the location of the device to be charged. The operator holds the charging gun head 331 at the end of the cable 330 and pulls it away from the device. The cable 330 drives the winding wheel 310 to rotate around the winding spool 311 on the wheel frame 113. The spring inside the winding spool 311 tightens with the rotation, converting the tension into elastic potential energy. At the same time, the cable 330 slides along the guide wheel 350 to ensure that it is pulled out along the prescribed track, and the process is smooth and without jamming. When the cable 330 is pulled out to the target length, the charging gun head 331 is released. The winding spool 311 drives the ratchet to rotate. The pawl, under the action of the spring, engages with the ratchet tooth groove, preventing the winding spool 311 from rotating in the opposite direction. The cable 330 maintains its current length without the need for manual knotting, avoiding the operation delays caused by the tangling and knotting of traditional cables 330, and achieving flexible adaptation of the charging distance.

[0039] The operator holds the handle 101 on the top of the shell 100 and moves the device by pushing the self-locking universal wheels 111 on the lower surface of the base 110, the universal wheels support omnidirectional steering and can be moved flexibly on the road surface, the moving efficiency is improved; automatic winding and unwinding is realized, the winding time is short, the operation efficiency is improved, the operation burden of the rescue personnel is reduced, and the personnel can focus on the core rescue task.

[0040] The guide wheel 350 and the wire slot ensure that the cable 330 is uniformly wound and unwound, there is no winding and jamming, the service life of the cable 330 is prolonged, and the maintenance cost is reduced; the problem that the cable 330 of the traditional portable charging pile needs to be manually pulled out and fixed, and needs to be manually wound when winding, and the cable 330 takes a long time to wind and unwind is solved.

[0041] In addition, the portable direct-current charging pile for emergency rescue according to the embodiment of the application also has the following additional technical features: In the specific embodiment of the application, the handle 101 is fixed on the top of the shell 100, and an insulating sheath is arranged on the outer surface of the handle 101, and a light switch for cutting off the total power supply is embedded in the insulating sheath.

[0042] In the specific embodiment of the application, the telescopic rod 130 is installed at the rear end of the shell 100, a limiting rod 150 is arranged at the front end of the shell 100, the lower end of the limiting rod 150 is fixed with the base 110, a limiting sleeve 151 is sleeved on the surface of the limiting rod 150, and the limiting sleeve 151 is fixed with the shell 100.

[0043] In the specific embodiment of the application, the telescopic rod 130 and the limiting rod 150 are arranged in parallel, and the telescopic rod 130 and the limiting rod 150 are arranged at the corners of the shell 100.

[0044] In the specific embodiment of the application, the shell 100 is embedded with a display screen 103, the display screen 103 is arranged obliquely at the front end of the shell 100, a straight insertion port 105 is installed below the display screen 103, and a dustproof cover is arranged on the straight insertion port 105. The operator can stand and view through the display screen 103 arranged obliquely at the front end of the shell 100, and real-time data such as charging voltage, current and remaining capacity can be obtained; if overload, short circuit or other faults occur, the device automatically cuts off the power supply, or manually cuts off the total power supply through the light switch at the handle 101, so as to avoid damage to the device or the risk of electric shock. The straight insertion port 105 is arranged to facilitate the insertion of the charging gun head 331 into the interface of the device to be charged, or the connection of the device through the straight insertion port 105, the charging pile module 170 is electrically connected with the cable 330 through the electric slip ring, and the voltage demand of different devices is met.

[0045] In the embodiment of the present application, the two ends of the cable 330 are provided with charging gun heads 331, the base 110 is fixed with a wheel frame 113, the winding shaft 311 is rotatably installed on the upper end of the wheel frame 113, the base 110 is fixed with a guide wheel 350, and the outer surface of one end of the cable 330 is in contact with the guide wheel 350.

[0046] In the embodiment of the present application, the shell 100 is internally provided with a charging pile module 170, the charging pile module 170 is arranged on the top of the charging wire 300, the winding wheel 310 is coaxially provided with an electric slip ring, and the charging pile module 170 is electrically connected with the cable 330 through the electric slip ring.

[0047] In the embodiment of the present application, the upper end of the shell 100 is provided with heat dissipation holes 107, the heat dissipation holes 107 are arranged on the two sides of the shell 100, the shell 100 is internally provided with heat dissipation fans, and the heat dissipation fans are arranged at positions opposite to the heat dissipation holes 107. During the charging process, the heat generated by the charging pile module 170 is discharged through the heat dissipation holes 107 on the two sides of the shell 100, and the internally arranged heat dissipation fans accelerate the air circulation, so that the temperature of the module is controlled below 60 DEG C.

[0048] In the embodiment of the present application, a ratchet and pawl mechanism for locking the rotation of the winding wheel 310 is further included, and a release button for releasing the locking is further included, and the roller 111 is a self-locking universal wheel. If temporary fixing is needed, the self-locking pedal of the universal wheel is stepped on to prevent the equipment from sliding on the rescue site.

[0049] When the cable 330 is pulled out, the external force drives the winding shaft 311 to rotate, and the winding shaft 311 will "tighten" the internal clockwork spring, so as to convert the pulling force into the elastic potential energy of the spring; When the hand is released and the locking is released, the clockwork spring wants to rebound, the ratchet wheel is clamped by the pawl when the winding shaft 311 rotates, the winding shaft 311 cannot rotate, and the cable 330 keeps the current length; When the locking is released, the release button is pressed, the button drives the pawl to be separated from the ratchet wheel, the clockwork spring releases the elastic potential energy, drives the winding shaft 311 to rotate in the opposite direction, uniformly winds the cable 330 on the shaft, and completes the automatic winding.

[0050] In the specific embodiment of the present application, the side wall of the shell 100 is provided with a photovoltaic panel, the upper end of the photovoltaic panel is hinged to the shell 100 through a damping hinge, and a folding support is connected between the inner wall of the photovoltaic panel and the shell 100. Fold the photovoltaic panel of the shell 100 side wall, fold the folding support, pull out from the inner wall of the photovoltaic panel and the shell 100, support the photovoltaic panel to keep stable, the folding support can be fixed at any angle, adapt to different light direction, under sunny conditions, supplement the charging pile module 170 with electric energy, prolong the endurance time. The electric energy generated by the photovoltaic panel is preferentially charged to the built-in battery of the charging pile, or directly powers the small emergency equipment.

[0051] The independent locking and buffering assembly increases the overall volume of the device, reduces portability, and separates the locking and buffering functions. The device has poor portability and weak anti-falling ability. Referring to the drawings, according to the specific embodiment of the portable direct current charging pile for emergency rescue of the present application: Specifically, as shown in the specific embodiment of the present application, Figures 2-4 The telescopic rod 130 includes a guide sleeve 131 and a sliding rod 133. The guide sleeve 131 is fixedly connected to the shell 100, the lower end of the sliding rod 133 is fixedly connected to the base 110, the upper end of the sliding rod 133 is slidingly inserted into the guide sleeve 131, the lower end of the sliding rod 133 is sleeved with a compression spring 135, the upper end of the compression spring 135 abuts against the lower end of the guide sleeve 131, and a limiting block 137 is slidingly connected in the guide sleeve 131. The shell 100 is built-in with a clamping mechanism 500 for locking the limiting block 137.

[0052] In the specific embodiment of the present application, the clamping mechanism 500 includes a housing 510, a lock tongue 530, and an unlocking button 550. The lock tongue 530 is slidingly connected to the housing 510, the lower end of the unlocking button 550 is slidingly connected to the housing 510, the housing 510 is fixedly connected to the inner wall of the shell 100, one end of the lock tongue 530 is matched and clamped with the limiting block 137, and the unlocking button 550 is used to drive the lock tongue 530 to slide and unlock.

[0053] The slide rod 133 slides stably along the inner wall of the guide sleeve 131. When the limiting block 137 at the end of the slide rod 133 precisely engages with the locking tongue 530, the compression spring 135 sleeved on the outside of the slide rod 133 is compressed synchronously, and the base 110 and the bottom of the outer shell 100 achieve a tight sealing contact, and the entire device enters the locked state. At this time, the compression spring 135, which is in a compressed state, can buffer external impacts through elastic deformation, such as transportation bumps and accidental collisions, and play a role in drop protection. When the device needs to be used, the unlock button 550 is pressed manually. When the locking tongue 530 disengages from the limiting block 137, the compression spring 135 releases its elastic potential energy, pushing the outer shell 100 to slide upward along the guide sleeve 131, thus fully exposing the originally hidden charging cable 300, facilitating the subsequent pulling out of the cable 330. At the same time, after the base 110 separates from the outer shell 100, a ventilation gap is formed, allowing external airflow to enter the device through this gap. This gap, combined with internal heat dissipation components (such as cooling fans), accelerates air circulation, significantly improving the device's heat dissipation and cooling efficiency, and preventing the charging pile module 170 from overloading due to high temperature.

[0054] Traditional unlocking mechanisms often employ knobs, single linkages, or pull-wire structures, resulting in complex operation and low emergency response efficiency. The following is a specific implementation plan for the portable DC charging pile for emergency rescue based on the attached diagram: Specifically, such as Figures 4-7 As shown, in a specific embodiment of the present invention, a rotating shaft 511 is rotatably installed inside the housing 510. A toothed column 513 is coaxially fixed to the rotating shaft 511. The toothed column 513 meshes with a main rack 515. The main rack 515 is fixed to the unlock button 550. The toothed column 513 also meshes with a secondary rack 517. The secondary rack 517 is fixedly connected to the locking tongue 530. A torsion spring 519 for driving its reset is sleeved on the rotating shaft 511.

[0055] In a specific embodiment of the present invention, two racks 517 are provided, and the two racks 517 are arranged symmetrically. Two locking tongues 530 are arranged symmetrically, and the locking tongues 530 are arranged in a one-to-one correspondence with the racks 517. Two telescopic rods 130 are provided. A through groove is provided on the side wall of the guide sleeve 131, and one end of the locking tongue 530 is slidably inserted into the through groove.

[0056] When the unlocking button 550 is pressed, the button drives the main rack 515 to slide in the horizontal direction through a transmission member, the main rack 515 is in meshing transmission with the tooth column 513, and then drives the rotating shaft 511 coaxially fixed with the tooth column 513 to rotate synchronously; the rotating tooth column 513 is in meshing transmission with the slave rack 517 at the same time, drives the slave rack 517 to slide in the opposite direction, and the lock tongue 530 fixedly connected with the slave rack 517 slides horizontally at the same time, finally makes the lock tongue 530 away from the limiting block 137 on the slide rod 133, and completes the unlocking action; after the unlocking button 550 is released, the torsional spring 519 sleeved on the rotating shaft 511 releases the pre-stored torsional force, drives the rotating shaft 511 and the tooth column 513 to rotate reversely, reversely drives the lock tongue 530 through the rack meshing transmission, and makes the lock tongue 530 automatically slide and reset, waiting for the next locking operation.

[0057] In the specific embodiment of the application, the first magnet is embedded on the upper surface of the base 110, the second magnet is embedded on the lower end surface of the shell 100, the first magnet and the second magnet are oppositely arranged, and the opposite surfaces of the first magnet and the second magnet are magnetically opposite.

[0058] During carrying, the base 110 and the shell 100 are easily separated, unnecessary troubles are caused, and transportation is affected, so below, with reference to the drawings, the specific embodiment of the portable direct current charging pile for emergency rescue according to the application is described: Specifically, as shown in the drawings, Figures 8-11 In the specific embodiment of the application, the locking mechanism 700 is further included, the locking mechanism 700 includes a push block 710 and a sliding rod 730, the sliding rod 730 is slidably connected with the shell 100, the push block 710 is slidably connected with the shell 100, a limiting groove 731 is formed on the surface of the sliding rod 730, the upper end of the push block 710 is slidably inserted into the limiting groove 731, the push block 710 is provided with a first elastic member 711, one end of the sliding rod 730 is provided with a second elastic member 735, the sliding rod 730 is fixedly connected with a clamping block 733, a clamping groove 115 is formed on the lower surface of the base 110, the clamping groove 115 is slidably connected with the clamping block 733, and the push rod 109 is slidably inserted into the base 110 and arranged above the push block 710.

[0059] The upper end of the push block 710 is slidingly inserted into the limiting groove 731 formed on the surface of the sliding rod 730, and under the pushing action of the first elastic member 711 installed at the lower end of the push block 710, the sliding rod 730 is caused to slide and compress the second elastic member 735 at the end of the sliding rod 730. The base 110 is arranged directly above the shell 100, and when the base 110 moves downward, it is clamped with the upper surface of the shell 100. At the same time, the push rod 109 arranged directly above the push block 710 moves downward to push the push block 710, so that the compressed second elastic member 735 pushes the sliding rod 730, and the clamping block 733 fixed on the surface of the sliding rod 730 is clamped with the clamping groove 115 formed on the lower surface of the base 110, thereby realizing the locking of the base 110 and the shell 100, preventing relative movement. The base 110 and the shell 100 are connected closely, which can achieve good sealing effect and prevent opening during carrying.

[0060] In the specific embodiment of the present application, the shell 100 is provided with a first sliding groove, and the sliding rod 730 is slidingly clamped in the first sliding groove. A second sliding groove is formed at the bottom of the first sliding groove, and the push block 710 is inserted into the second sliding groove at the lower end.

[0061] In the specific embodiment of the present application, under the condition that the push block 710 is not subjected to external force, the first elastic member 711 pulls the push block 710, so that the push block 710 moves away from the sliding rod 730. The first elastic member 711 is a tension spring, and the second elastic member 735 is a compression spring. The first elastic member 711 is arranged at the bottom of the second sliding groove, and the second elastic member 735 is arranged in the first sliding groove.

[0062] The above is only an embodiment of the present application and does not limit the protection scope of the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

Claims

1. A portable direct current charging pile for emergency rescue, characterized in that, The utility model provides a portable charging device, including The shell (100) bottom is provided with the base (110), the lower surface of base (110) is installed with the gyro wheel (111), the base (110) is connected with the telescopic link (130) between the shell (100); The charging wire (300) includes the winding wheel (310) and cable (330), the winding wheel (310) is rotatably installed on the upper surface of base (110), the winding wheel (310) is coaxially fixed with winding shaft (311), the winding shaft (311) is wound with clockwork spring, the cable (330) is wound in the surface wire slot of winding wheel (310).

2. The portable DC charging pile for emergency rescue according to claim 1, characterized in that, The shell (100) top is fixed with handle (101), the outer surface of handle (101) is provided with insulating sheath, the insulating sheath is embedded with the light switch of cutting off total power supply.

3. The portable DC charging pile for emergency rescue according to claim 1, characterized in that, The telescopic link (130) is installed at the rear end of the shell (100), the front end of the shell (100) is provided with the limiting rod (150), the lower end of the limiting rod (150) is fixed with the base (110), the limiting rod (150) is provided with the limiting sleeve (151) on the surface, and the limiting sleeve (151) is fixed with the shell (100).

4. The portable DC charging pile for emergency rescue according to claim 3, characterized in that, The telescopic link (130) is parallelly arranged with the limiting rod (150), and the telescopic link (130) and the limiting rod (150) are arranged at the corner of the shell (100).

5. The portable DC charging pile for emergency rescue according to claim 1, characterized in that, The shell (100) is embedded with the display screen (103), the display screen (103) is arranged obliquely at the front end of the shell (100), a straight socket (105) is installed below the display screen (103), and the straight socket (105) is provided with a dust cover.

6. The portable DC charging pile for emergency rescue according to claim 1, characterized in that, Both ends of the cable (330) are provided with charging gun heads (331), the base (110) is fixed with a wheel frame (113), the winding shaft (311) is rotatably installed on the upper end of the wheel frame (113), the base (110) is fixed with a guide wheel (350), and the outer surface of one end of the cable (330) abuts against the guide wheel (350).

7. The portable DC charging pile for emergency rescue according to claim 1, characterized in that, The shell (100) is built-in with a charging pile module (170), the charging pile module (170) is arranged at the top of the charging wire (300), the winding wheel (310) is coaxially installed with an electric slip ring, and the charging pile module (170) is electrically connected with the cable (330) through the electric slip ring.

8. The portable DC charging pile for emergency rescue according to claim 1, characterized in that, The shell (100) is provided with a heat dissipation hole (107) at the upper end, the heat dissipation hole (107) is arranged on both sides of the shell (100), and the shell (100) is built-in with a heat dissipation fan, which is installed at a position opposite to the heat dissipation hole (107).

9. The portable DC charging pile for emergency rescue according to claim 1, characterized in that, It also includes a ratchet and pawl mechanism for locking the rotation of the winding wheel (310), and a release button for releasing the lock, and the gyro wheel (111) is a self-locking universal wheel.

10. The portable DC charging pile for emergency rescue according to claim 1, characterized in that, The side wall of the shell (100) is provided with a photovoltaic panel, the upper end of the photovoltaic panel is hinged with the shell (100) through a damping hinge, and a folding support is connected between the inner wall of the photovoltaic panel and the shell (100).

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