A new energy vehicle charging pile

Abstract

The application relates to a new energy automobile charging pile, which comprises a winding frame, connecting shafts are arranged at the top and the bottom of the winding frame, a charging wire is wound on the outer surface of the winding frame, one end of the charging wire is connected with a charging device, the other end is provided with a charging head, bearings are arranged on the outer surfaces of the connecting shafts, guide discs are movably sleeved on the bearings, connecting plates are fixedly installed on the outer surfaces of the guide discs, and annular plates are fixedly installed at one end of the connecting plates. When an operator holds the charging head and drags it to a car charging port, the charging wire is straightened along the dragging direction under the action of the dragging force, in the process, the force pushes the wire outlet device and drives the winding device to rotate as a whole, so that the orientation of the wire outlet device can be the same as that of the charging wire, the problem that the charging wire is rubbed with the turning corner of the charging pile when being dragged, the outer insulating layer of the charging wire is excessively abraded, the internal electric core is leaked, and an electric leakage accident is caused is avoided.

Description

Technical Field

[0001] This application relates to the field of vehicle energy replenishment technology, and in particular to a new energy vehicle charging pile. Background Technology

[0002] With the development and popularization of new energy vehicles, their market share is constantly increasing. To ensure that new energy vehicles can be quickly recharged, charging piles are installed to recharge the vehicles while they are parked. Traditional charging equipment consists of charging devices, control devices, charging lines, and charging heads. During use, the charging head is inserted into the charging port of the new energy vehicle, and the charging device is turned on by the control device. At this time, electrical energy is input into the battery in the new energy vehicle through the charging lines. However, in actual use, there are still certain limitations. Since the starting end of the charging line is often located on one side of the casing, if the charging port of the car is located on the other side, it will cause the charging line to bend excessively. In addition, some users throw the charging head directly on the ground after use. Due to the lack of an automatic cable retraction mechanism, it is easy for other vehicles to run over the charging line and charging port during driving, causing damage to the equipment. In view of this, this application proposes a new energy vehicle charging pile to solve the above-mentioned problems. Summary of the Invention

[0003] This application proposes a new energy vehicle charging pile with the advantages of automatically adjusting the direction of the cable outlet and automatically retracting the cable, in order to solve the problem of charging lines being excessively bent and easily run over by other vehicles.

[0004] To achieve the above objectives, this application adopts the following technical solution: A new energy vehicle charging pile includes a shell, the front of which is set as an arc surface, and an arc-shaped hole is opened near the middle of the arc surface. A cable reeling device is fixedly installed at the bottom of the inner cavity of the shell near the center. A cable easing device is fixedly installed at the bottom of the inner cavity of the shell in front of the cable reeling device. An installation plate is fixedly installed on the inner wall of the shell above the arc-shaped hole. A second telescopic mechanism is fixedly installed on the front of the installation plate. A telescopic seat is fixedly installed at one end of the output shaft of the second telescopic mechanism. A spring sleeve is fixedly installed at the bottom of the telescopic seat near the front end. A spring rod is movably installed inside the spring sleeve. The spring rod can extend and retract inside the spring sleeve, and the extension and retraction process is limited by the reaction force of the spring. A brake block is fixedly installed at the bottom of the spring rod. The bottom of the brake block is in contact with the cable reeling device. A fixing block is fixedly installed at the top of the inner cavity of the shell. The fixing block is fixedly connected to the cable reeling device. A charging device is provided at the bottom of the inner cavity of the shell behind the cable reeling device.

[0005] Furthermore, the winding and unwinding device includes a base, on the top of which a main shaft is movably mounted via a bearing connection. A rotary spring is engaged at the bottom of the main shaft, and the bottom of the rotary spring is fixedly connected to the bottom surface of the inner wall of the base. The rotary spring can drive the main shaft to reset along the rotation direction. A travel depth hole is formed at the top of the main shaft, and a travel shaft is movably installed inside the travel depth hole via a telescopic mechanism. A mating shaft is fixedly installed at the center of the bottom of the travel depth hole. A mating hole is formed at the bottom of the travel shaft and telescopically engages with the mating shaft. The mating shaft has a cross-shaped cross section, and when rotated, it drives the travel shaft to rotate synchronously. The travel shaft is connected to the top and bottom of the inner cavity of the travel depth hole via two sets of springs, respectively. A winding device is fixedly installed at the top of the travel shaft, and a locking device is fixedly installed at the top of the mating hole.

[0006] Furthermore, the winding device includes a winding frame, with connecting shafts at both the top and bottom. A charging cable is wound around the outer surface of the winding frame, with one end of the charging cable connected to a charging device and the other end having a charging head. A bearing is provided on the outer surface of the connecting shaft, and a guide plate is movably mounted on the bearing. A connecting plate is fixedly installed on the outer surface of the guide plate, and an annular plate is fixedly installed at one end of the connecting plate. A wire hole is opened on the front side of the annular plate, and a wire outlet device is fixedly installed on the front side of the annular plate at a position corresponding to the wire hole.

[0007] Furthermore, the locking device includes a synchronous shaft, a limiting sleeve movably fitted on the top of the synchronous shaft, the top of the limiting sleeve being fixedly connected to a fixing block, a limiting disc being provided on the outer surface of the synchronous shaft near the middle, an annular groove being formed on the top of the limiting disc, and a brake disc being installed inside the annular groove, a locking disc being movably fitted on the outer surface of the limiting disc near the top, and a push rod and a stop rod being fixedly installed on the outer surface of the limiting disc near the bottom, respectively, a stroke hole being formed on the front of the stop rod, and the front of the stop rod... A contact sensor is located below the travel hole. A locking bar is provided on the top of the locking disc. The locking bar has a right-angled triangular cross-section and is distributed in a circular array. A first travel rod is fixedly installed at the bottom of the locking disc. An arc-shaped rod is fixedly installed on one side of the first travel rod. In the initial state, the first travel rod is located between the push rod and the stop rod and is in contact with the push rod. The arc-shaped rod cooperates with the travel hole. A return spring is provided at one end of the arc-shaped rod, and one end of the return spring is connected to the push rod.

[0008] The bottom of the brake block is initially in contact with the top surface of the locking disc.

[0009] Furthermore, the cable outlet device includes a cable outlet frame with bypass holes on both sides. A second stroke rod is fixedly installed on both sides of the cable outlet frame at positions corresponding to the bypass holes. A stroke frame is movably installed on the outer surface of the second stroke rod. A sliding bushing is provided at the top of the stroke frame outside the second stroke rod, and a stroke spring is provided at the bottom of the stroke frame outside the second stroke rod. A connecting frame is fixedly installed at one end of the stroke frame. Cable outlet guide wheels are movably sleeved on one side of the connecting frame near the top and bottom. An arc-shaped groove is provided on the outer surface of the cable outlet guide wheel near the middle, and the charging cable passes through the arc-shaped groove between the two cable outlet guide wheels. A rotation sensor is provided inside the cable outlet guide wheel to identify the number of rotations of the cable outlet guide wheel.

[0010] Furthermore, the cable loosening device includes a first telescopic mechanism, on the top of which a cable loosening frame is fixedly installed, and on the top of the cable loosening frame is a cable loosening roller, through which the charging cable passes.

[0011] Furthermore, the output end of the contact sensor is connected to the input ends of the second telescopic machine and the first telescopic machine via a signal connection, and the output end of the rotation sensor installed inside the cable guide wheel is connected to the input end of the first telescopic machine via a signal connection.

[0012] This application has the following beneficial effects.

[0013] 1. When the charging cable is pulled, the direction of the cable outlet should be the same as that of the charging cable to avoid friction with the corner of the charging pile when pulling the charging cable. At the same time, the charging cable will be bent excessively and for a long time. After long-term use, the outer insulation layer of the charging cable will be worn excessively and the internal battery cells will be exposed, causing leakage accidents.

[0014] 2. After charging is complete, the stored elasticity of the rotary spring is released and drives the winding device to rotate, and the charging cable is rewound around the outside of the winding frame and stored, avoiding the problem of the charging head being thrown directly on the ground after charging is completed, which could lead to it being run over and damaged by other vehicles.

[0015] 3. During the process of the brake block contacting the top inclined surface of the locking bar, it will be lifted upward under the pushing action, so that it will not obstruct the locking bar. During the rotation, the brake block contacts the vertical surface of the locking bar to achieve the stopping effect.

[0016] 4. The second telescopic mechanism pushes the telescopic seat and drives the brake block from the top surface of the locking disc to the top surface of the brake disc. At this time, the vertical surface of the locking bar can no longer obstruct the brake block, so that the rotary spring drives the winding device to rotate and rewinds the charging cable that is in a hanging state onto the outside of the winding frame, thereby realizing the automatic storage of the charging head.

[0017] 5. The longer the charging cable is extended, the more rotations the winding device makes, resulting in a greater stored elastic force in the rotary spring. This means that in the initial stage when the brake block contacts the brake disc and the winding device rotates under the influence of the rotary spring, the elastic force of the rotary spring is at its maximum. At the same time, the force between the brake block and the brake disc is also at its maximum. This avoids the problem of excessive acceleration caused by a large rotary spring force, which could lead to excessively fast cable retraction and collision between the charging head and the cable guide wheel, causing damage. This improves the reliability of the device. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0019] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein:

[0020] Figure 1 This is a structural diagram of the present invention;

[0021] Figure 2 This is a cross-sectional view of the structure of the present invention;

[0022] Figure 3 This is a diagram of the braking system structure of the present invention;

[0023] Figure 4 This is a cross-sectional view of the braking system of the present invention;

[0024] Figure 5 This is a structural diagram of the main body of the present invention;

[0025] Figure 6 This invention relates to a wire take-up and unwinding device.

[0026] Figure 7 This is a cross-sectional view of the wire take-up and unwinding device of the present invention;

[0027] Figure 8 This is a diagram of the winding device structure of the present invention;

[0028] Figure 9 This is a structural diagram of the guide disk of the present invention;

[0029] Figure 10 This is a diagram of the locking device structure of the present invention;

[0030] Figure 11 The structure of this invention Figure 10 Enlarged view of point A in the middle;

[0031] Figure 12 This is a cross-sectional view of the locking device of the present invention;

[0032] Figure 13 This is a structural diagram of the top surface of the locking disc of the present invention;

[0033] Figure 14 This is a structural diagram of the bottom surface of the locking disc of the present invention;

[0034] Figure 15 This is a bottom structural diagram of the locking device of the present invention;

[0035] Figure 16 This is a diagram of the wire-out device of the present invention;

[0036] Figure 17 This is a structural diagram of the stroke frame of the present invention;

[0037] Figure 18 This is a diagram of the wire loosening device of the present invention.

[0038] In the diagram: 1. Outer shell; 2. Arc-shaped hole; 3. Cable winding / unwinding device; 31. Base; 32. Main shaft; 33. Rotary spring; 34. Stroke deep hole; 35. Stroke shaft; 36. Mating shaft; 37. Mating hole; 38. Winding device; 381. Winding frame; 382. Connecting shaft; 383. Charging cable; 384. Charging head; 385. Guide plate; 386. Connecting plate; 387. Annular plate; 388. Wire hole; 39. Locking device; 3901. Synchronous shaft; 3902. Limiting bushing; 3903. Limiting plate; 3904. Brake disc; 3905. Locking disc; 3906a. Push rod; 3906b. Stop rod; 3907. Stroke. 3908. Hole; 3909. Contact sensor; 3901. Locking bar; 3910. First stroke rod; 3911. Arc rod; 3912. Return spring; 301. Cable exit device; 3011. Cable exit frame; 3012. Bypass hole; 3013. Second stroke rod; 3014. Stroke frame; 3015. Sliding bushing; 3016. Stroke spring; 3017. Connecting frame; 3018. Cable exit guide wheel; 4. Cable release device; 41. First telescopic mechanism; 42. Cable release frame; 43. Cable release roller; 5. Mounting plate; 6. Second telescopic mechanism; 7. Telescopic seat; 8. Spring sleeve; 9. Spring rod; 10. Brake block; 11. Fixing block; 12. Charging equipment. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0040] For an example of a new energy vehicle charging station, please refer to [link / reference]. Figures 1-4The device includes an outer shell 1. The front of the outer shell 1 is curved, and an arc-shaped hole 2 is opened near the center of the curved surface. A take-up and release device 3 is fixedly installed at the bottom of the inner cavity of the outer shell 1 near the center. A release device 4 is fixedly installed at the bottom of the inner cavity of the outer shell 1 in front of the take-up and release device 3. An installation plate 5 is fixedly installed on the inner wall of the outer shell 1 above the arc-shaped hole 2. A second telescopic mechanism 6 is fixedly installed on the front of the installation plate 5. A telescopic seat 7 is fixedly installed at one end of the output shaft of the second telescopic mechanism 6. A spring sleeve 8 is fixedly installed at the bottom of the telescopic seat 7 near the front end. A spring rod 9 is movably installed inside the spring sleeve 8. The spring rod 9 can extend and retract inside the spring sleeve 8, and the extension and retraction process is limited by the reaction force of the spring. A brake block 10 is fixedly installed at the bottom of the spring rod 9. The bottom of the brake block 10 is in contact with the take-up and release device 3. A fixing block 11 is fixedly installed at the top of the inner cavity of the outer shell 1. The fixing block 11 is fixedly connected to the take-up and release device 3. A charging device 12 is provided at the bottom of the inner cavity of the outer shell 1 behind the take-up and release device 3.

[0041] Please see Figures 5-7 The winding and unwinding device 3 includes a base 31. A main shaft 32 is movably mounted on the top of the base 31 via a bearing connection. A rotary spring 33 is engaged at the bottom of the main shaft 32. The bottom of the rotary spring 33 is fixedly connected to the bottom surface of the inner wall of the base 31. The rotary spring 33 can drive the main shaft 32 to reset in the direction of rotation. A travel depth hole 34 is opened at the top of the main shaft 32. A travel shaft 35 is movably installed inside the travel depth hole 34 via a telescopic mechanism. A mating shaft 36 is fixedly installed at the center of the bottom of the travel depth hole 34. A mating hole 37 is opened at the bottom of the travel shaft 35 and telescopically engages with the mating shaft 36. The cross section of the mating shaft 36 is cross-shaped. When rotating, it drives the travel shaft 35 to rotate synchronously. The travel shaft 35 is connected to the top and bottom of the inner cavity of the travel depth hole 34 via two sets of springs respectively. A winding device 38 is fixedly installed at the top of the travel shaft 35, and a locking device 39 is fixedly installed at the top of the mating hole 37.

[0042] Please see Figures 8-9 The winding device 38 includes a winding frame 381. The top and bottom of the winding frame 381 are provided with connecting shafts 382. The outer surface of the winding frame 381 is wound with a charging cable 383. One end of the charging cable 383 is connected to the charging device 12, and the other end is provided with a charging head 384. The outer surface of the connecting shaft 382 is provided with a bearing, and a guide plate 385 is movably sleeved through the bearing. A connecting plate 386 is fixedly installed on the outer surface of the guide plate 385. An annular plate 387 is fixedly installed on one end of the connecting plate 386. A wire hole 388 is opened on the front side of the annular plate 387. A wire outlet device 301 is fixedly installed on the front side of the annular plate 387 at the position corresponding to the wire hole 388.

[0043] Because the guide plate 385 and the connecting shaft 382 are connected by a bearing, when the operator holds the charging head 384 and pulls it to the car charging port, the charging cable 383 is taut along the pulling direction under the action of the pulling force. During this process, the force pushes the cable outlet device 301 and drives the winding device 38 to rotate as a whole, so that the orientation of the cable outlet device 301 is the same as the orientation of the charging cable 383. In contrast, in traditional devices, because the cable outlet is located on one side of the charging pile, when the car charging port is on the other side, the cable will rub against the corner of the charging pile when pulling it. At the same time, the charging cable will be bent excessively and for a long time. After long-term use, the outer insulation layer of the charging cable is prone to excessive wear and leakage of the internal battery cells, causing leakage accidents. This application document avoids this problem well, improving the service life and safety of the device.

[0044] The device is equipped with a winding device 38. Initially, the charging cable 383 is wound around the outside of the winding frame 381. When the charging cable 383 is pulled, it is pulled away from the outer surface of the winding frame 381, simultaneously driving the winding frame 381 to rotate. The travel shaft 35 rotates synchronously with the winding device 38, and the return spring 33 twists and stores elastic force. As the charging cable 383 is pulled away from the outer surface of the winding frame 381, the total weight of the winding device 38 decreases continuously. The elastic force generated by the compression of the spring connecting the travel shaft 35 and the travel depth hole 34 is released, raising the travel shaft 35 and increasing the height of the winding device 38. After charging is completed, the return spring... The spring 33 releases the stored elasticity and drives the winding device 38 to rotate, rewinding the charging cable 383 around the outside of the winding frame 381 and completing the storage. This avoids the problem of the charging head 384 being thrown directly on the ground after charging is completed, which could lead to it being run over and damaged by other vehicles. At the same time, during the storage process, the weight of the winding device 38 increases, and the spring connecting the travel shaft 35 and the travel depth hole 34 is compressed again, causing the height of the winding device 38 to continuously decrease during the storage process. This effectively prevents the charging cable 383 from piling up on the outer surface of the winding frame 381 or coming off the outer surface of the winding frame 381 during the winding process, which would prevent the cable from being properly wound up. This improves the practicality of the device.

[0045] Please see Figures 10-15The locking device 39 includes a synchronous shaft 3901. A limiting sleeve 3902 is movably fitted on the top of the synchronous shaft 3901. The top of the limiting sleeve 3902 is fixedly connected to the fixing block 11. A limiting disc 3903 is provided on the outer surface of the synchronous shaft 3901 near the middle. An annular groove is formed on the top of the limiting disc 3903, and a brake disc 3904 is installed inside the annular groove. A locking disc 3905 is movably fitted on the outer surface of the limiting disc 3903 near the top. A push rod 3906a and a stop rod 3906b are fixedly installed on the outer surface of the limiting disc 3903 near the bottom. A stroke hole 3907 is formed on the front of the stop rod 3906b, and the front of the stop rod 3906b is located at the stroke hole 3907. A contact sensor 3908 is installed at the lower position. A locking bar 3909 is installed on the top of the locking disc 3905. The locking bar 3909 has a right-angled triangle cross section and is distributed in a circular array. A first stroke rod 3910 is fixedly installed at the bottom of the locking disc 3905. An arc rod 3911 is fixedly installed on one side of the first stroke rod 3910. In the initial state, the first stroke rod 3910 is located between the push rod 3906a and the stop rod 3906b and is in contact with the push rod 3906a. The arc rod 3911 cooperates with the stroke hole 3907. A return spring 3912 is installed at one end of the arc rod 3911. One end of the return spring 3912 is connected to the push rod 3906a.

[0046] As the locking device 39 rotates as a whole, the first stroke rod 3910 is initially positioned between the push rod 3906a and the stop rod 3906b, and is in contact with the push rod 3906a. This causes the push rod 3906a to rotate with the locking device 39. During the rotation of the locking device 39, the brake block 10 contacts the locking bar 3909. Since the cross-section of the locking bar 3909 is a right-angled triangle, the brake block 10 will be pushed upwards during the contact with the top inclined surface of the locking bar 3909, preventing it from impacting the locking bar 3909. 909 acts as a barrier, ensuring that the charging cable 383 does not experience significant resistance during traction. After traction is completed, the winding device 38 rotates under the elastic force of the rotary spring 33. During rotation, the brake block 10 contacts the vertical surface of the locking strip 3909 to achieve a stop function. This prevents the charging cable 383 from being in a taut state due to the rotation of the winding device 38 during charging, thus reducing its service life. It also prevents the taut charging cable 383 from contacting the vehicle surface and causing contamination or even scratches to the paint. This improves the practicality of the device.

[0047] When the winding frame 381 rotates under the traction of the charging cable 383, the elastic force stored in the rotary spring 33 will cause the winding device 38 and the locking device 39 to generate a rotational torque as a whole. This torque acts on the vertical surface of the locking bar 3909 through the brake block 10, thereby driving the locking disc 3905 to rotate until the first stroke rod 3910 contacts the contact sensor 3908 on the side of the stop rod 3906b, at which point the locking disc 3905 will stop rotating.

[0048] As the charging cable 383 is extended further, the overall mass of the winding device 38 decreases significantly, and its height increases. Under this effect, the spring rod 9 retracts a greater distance inside the spring sleeve 8, resulting in greater downward pressure on the brake block 10 when it contacts the brake disc 3904 or locking disc 3905, thus achieving a braking effect. Simultaneously, the longer the charging cable 383 is extended, the more rotations the winding device 38 makes, leading to a greater stored elastic force in the rotary spring 33. This results in the initial stage when the brake block 10 contacts the brake disc 3904 and the winding device 38 rotates under the influence of the rotary spring 33. At this point, the elastic force of the rotary spring 33 is at its maximum, and the force between the brake block 10 and the brake disc 3904 is also at its maximum, thus preventing the rotary spring from overexerting itself. The greater elasticity of the 33 leads to a greater acceleration in the overall rotation of the winding device 38, which causes the charging head 384 to collide with the lead guide wheel 3018 and be damaged due to excessive speed in retrieving the charging cable 383. This improves the reliability of the device. As the winding frame 381 rotates and retrieving the charging cable 383, the overall weight of the winding device 38 continuously increases, and the height of the winding device 38 continuously decreases. At this time, the braking force of the brake block 10 on the brake disc 3904 is reduced simultaneously, ensuring that the rotation speed of the winding frame 381 remains stable and avoiding excessive speed or slow speed, further improving the practicality of the device. When the winding device 38 rotates to the initial position, the second telescopic machine 6 drives the telescopic seat 7 to reset, causing the brake block 10 to re-engage with the locking disc 3905.

[0049] Please see Figures 16-17The cable outlet device 301 includes a cable outlet frame 3011. Bypass holes 3012 are provided on both sides of the cable outlet frame 3011. Second stroke rods 3013 are fixedly installed on both sides of the cable outlet frame 3011 at positions corresponding to the bypass holes 3012. A stroke bracket 3014 is movably installed on the outer surface of the second stroke rod 3013. A sliding bushing 3015 is provided at the top of the stroke bracket 3014 outside the second stroke rod 3013, and the bottom of the stroke bracket 3014 is outside the second stroke rod 3013. A travel spring 3016 is provided at the position, and a connecting frame 3017 is fixedly installed at one end of the travel frame 3014. A cable guide wheel 3018 is movably sleeved on one side of the connecting frame 3017 near the top and bottom. An arc-shaped groove is provided on the outer surface of the cable guide wheel 3018 near the middle, and the charging cable 383 passes through the arc-shaped groove between the two cable guide wheels 3018. A rotation sensor is provided inside the cable guide wheel 3018, which can detect the number of rotations of the cable guide wheel 3018.

[0050] When the device is charging a car, the charging head 384 is inserted into the car's charging port and fixed in place. This allows the charging cable 383 and the cable guide wheel 3018 to jointly support the charging cable 383 located on the outside of the housing 1. At this time, the downward movement of the travel bracket 3014 is relatively small. When the user finishes charging the car and unplugs the charging head 384 to place it on the ground or put it back in its original position, the charging cable 383 moves from the cable guide wheel 3018 to extend to the ground. The weight of the suspended portion of the charging cable 383 will directly act on the cable guide wheel 3018, causing the travel bracket 3014 to move further downward. At this time, the output of the contact sensor 3908... The terminal is connected to the input terminal of the second telescopic machine 6 via a signal connection, so that the second telescopic machine 6 pushes the telescopic seat 7 and drives the brake block 10 from the top surface of the locking disc 3905 to the top surface of the brake disc 3904. At this time, the vertical surface of the locking bar 3909 can no longer obstruct the brake block 10, so that the rotary spring 33 drives the winding device 38 to rotate and rewinds the charging cable 383, which is in a drooping state, onto the outside of the winding frame 381, thereby realizing the automatic storage of the charging head 384 and avoiding the problem of the charging head 384 and part of the charging cable 383 being crushed by other passing vehicles, thus improving the reliability of the device.

[0051] Please see Figure 18 The cable loosening device 4 includes a first telescopic mechanism 41, a cable loosening frame 42 is fixedly installed on the top of the first telescopic mechanism 41, a cable loosening roller 43 is provided on the top of the cable loosening frame 42, and the charging cable 383 passes through the position between the cable loosening frame 42 and the cable loosening roller 43.

[0052] Please see Figure 3 , Figure 11 , Figure 16 and Figure 18The output of the contact sensor 3908 is connected to the input of the second telescopic machine 6 and the first telescopic machine 41 via a signal connection. The output of the rotation sensor installed inside the cable guide wheel 3018 is connected to the input of the first telescopic machine 41 via a signal connection. The lifting height of the first telescopic machine 41 is proportional to the number of rotations detected by the cable guide wheel 3018.

[0053] When the charging cable 383 is pulled, it drives the cable guide wheel 3018 to rotate synchronously. Since the cable guide wheel 3018 has a rotation sensor inside, it can detect the number of rotations. Simultaneously, the output of the rotation sensor inside the cable guide wheel 3018 is connected to the input of the first telescopic mechanism 41 via a signal connection, and the output of the contact sensor 3908 is also connected to the input of the first telescopic mechanism 41 via a signal connection. This ensures that after the winding frame 381 completes the release of the charging cable 383... The first telescopic machine 41 starts to operate, and the lifting height of the first telescopic machine 41 is proportional to the number of rotations detected by the cable guide wheel 3018. This means that the longer the charging cable 383 is pulled out, the higher the first telescopic machine 41 lifts the cable loosening roller 43. Since the charging cable 383 passes through the position between the cable loosening frame 42 and the cable loosening roller 43, the path between the cable loosening roller 43 and the cable guide wheel 3018 is shortened after the cable loosening roller 43 is lifted, thereby releasing part of the charging cable 383 to ensure that it is in a slack state and avoiding the charging cable 383 from being overly taut.

[0054] The method of using this invention is as follows:

[0055] During use, when the operator holds the charging head 384 and pulls it towards the car's charging port, the charging cable 383 becomes taut along the pulling direction under the traction force. During this process, the force pushes the cable exit device 301 and drives the winding device 38 to rotate, ensuring that the orientation of the cable exit device 301 is the same as that of the charging cable 383. This device includes a winding device 38, and initially, the charging cable 383 is wound around the outside of the winding frame 381. When the charging cable 383 is pulled, it is pulled away from the outer surface of the winding frame 381, simultaneously driving the winding frame 381 to rotate. The stroke shaft 35 rotates synchronously with the winding device 38, and the return spring 33 twists and stores elasticity, causing the charging cable 383 to... As the outer surface of the winding frame 381 is removed, the total weight of the winding device 38 decreases continuously. The elastic force generated by the compression of the spring connecting the travel shaft 35 and the travel depth hole 34 is released, raising the travel shaft 35 and increasing the height of the winding device 38. After charging is complete, the elastic force stored in the rotary spring 33 is released, driving the winding device 38 to rotate and rewind the charging cable 383 around the outside of the winding frame 381 for storage. Simultaneously, during storage, the weight of the winding device 38 increases, and the spring connecting the travel shaft 35 and the travel depth hole 34 is compressed again, causing the height of the winding device 38 to decrease continuously during storage. This effectively prevents the charging cable 383 from stacking or... on the outer surface of the winding frame 381 during winding. The problem of the cable detaching from the outer surface of the winding frame 381, causing the cable to be unable to be properly wound, is addressed by the locking device 39 rotating as a whole. Since the first stroke rod 3910 is initially positioned between the push rod 3906a and the stop rod 3906b, and is in contact with the push rod 3906a, the push rod 3906a rotates with the locking device 39. During the rotation of the locking device 39, the brake block 10 contacts the locking bar 3909. Because the locking bar 3909 has a right-angled triangular cross-section, the brake block 10 will be pushed upwards during contact with the top inclined surface of the locking bar 3909, preventing it from obstructing the locking bar 3909 and ensuring that the charging cable 383 is not subjected to significant stress during traction. Resistance is applied, and after traction ends, the winding device 38 rotates under the elastic force of the rotary spring 33. During rotation, the brake block 10 contacts the vertical surface of the locking bar 3909 to achieve a stop function, preventing the charging cable 383 from being taut during charging and thus reducing its service life, and preventing the taut charging cable 383 from contacting the vehicle surface and causing contamination or even scratches. When the winding frame 381 rotates under the traction of the charging cable 383, the elastic force stored in the rotary spring 33 will cause the winding device 38 and the locking device 39 to generate a rotational torque. This torque acts on the vertical surface of the locking bar 3909 through the brake block 10, thereby driving the locking disc 3905 to rotate.The locking disc 3905 will stop rotating only when the first travel lever 3910 contacts the contact sensor 3908 on the side of the stop lever 3906b. When the device is recharging a car, the charging head 384 is fixed by being inserted into the car's charging port, thus the charging cable 383 and the cable guide wheel 3018 together support the charging cable 383 located on the outside of the housing 1. At this time, the downward movement of the travel bracket 3014 is small. When the user finishes recharging the car and unplugs the charging head 384 and places it on the ground or puts it back in its original position, the charging cable 383 moves from the cable guide wheel 3018 to extend to the ground. The weight of the suspended part of the charging cable 383 will directly act on the cable guide wheel 3018, causing the travel bracket 3014 to move downward. Moving further down, the output of the contact sensor 3908 is connected to the input of the second telescopic mechanism 6 via a signal connection. This causes the second telescopic mechanism 6 to push the telescopic seat 7 and move the brake block 10 from the top surface of the locking disc 3905 to the top surface of the brake disc 3904. At this point, the vertical surface of the locking bar 3909 can no longer obstruct the brake block 10, causing the rotary spring 33 to drive the winding device 38 to rotate and rewind the hanging charging cable 383 onto the outside of the winding frame 381, thus achieving automatic storage of the charging head 384. The longer the charging cable 383 is pulled out, the greater the decrease in the overall mass of the winding device 38, and the higher it is raised. The greater the retraction distance of the spring rod 9 inside the spring sleeve 8, the greater the downward pressure when the brake block 10 contacts the brake disc 3904 or locking disc 3905, thus achieving a braking effect. Simultaneously, the longer the charging cable 383 is extended, the more rotations the winding device 38 undergoes, resulting in a greater stored elastic force in the rotary spring 33. This means that in the initial stage when the brake block 10 contacts the brake disc 3904 and the winding device 38 rotates under the influence of the rotary spring 33, the elastic force of the rotary spring 33 is at its maximum. At the same time, the force between the brake block 10 and the brake disc 3904 is also at its maximum. This prevents the large elastic force of the rotary spring 33 from causing a large acceleration in the rotation of the winding device 38, which could lead to a retraction failure. The problem of damage caused by the charging head 384 colliding with the cable guide wheel 3018 due to excessive speed of the charging cable 383 has been addressed by improving the reliability of the device. Furthermore, as the winding frame 381 rotates and retracts the charging cable 383, the overall weight of the winding device 38 continuously increases, and the height of the winding device 38 continuously decreases. At this time, the braking force of the brake block 10 on the brake disc 3904 decreases synchronously, ensuring that the rotation speed of the winding frame 381 remains stable, avoiding excessively fast or slow speeds. When the charging cable 383 is under traction, it drives the cable guide wheel 3018 to rotate synchronously. Since the cable guide wheel 3018 is equipped with a rotation sensor, it can detect the number of rotations of the cable guide wheel 3018.Simultaneously, the output of the rotation sensor inside the cable guide wheel 3018 is connected to the input of the first telescopic machine 41 via a signal connection, and the output of the contact sensor 3908 is also connected to the input of the first telescopic machine 41 via a signal connection. This ensures that after the winding frame 381 releases the charging cable 383, the first telescopic machine 41 begins operation. The lifting height of the first telescopic machine 41 is proportional to the number of rotations detected by the cable guide wheel 3018. Therefore, the longer the charging cable 383 is pulled out, the higher the first telescopic machine 41 lifts the loosening roller 43. Since the charging cable 383 passes between the loosening frame 42 and the loosening roller 43, the path between the loosening roller 43 and the cable guide wheel 3018 is shortened after the loosening roller 43 is lifted, thus releasing part of the charging cable 383 and ensuring it remains slack.

Claims

1. A charging pile for new energy vehicles, characterized in that, The system includes an outer shell (1), the front of which is curved, and an arc-shaped hole (2) is provided near the center of the curved surface. A take-up and release device (3) is fixedly installed at the bottom of the inner cavity of the outer shell (1) near the center. A slack-out device (4) is fixedly installed at the bottom of the inner cavity of the outer shell (1) in front of the take-up and release device (3). An installation plate (5) is fixedly installed on the inner wall of the outer shell (1) above the arc-shaped hole (2). A second telescopic machine (6) is fixedly installed on the front of the installation plate (5). The second telescopic machine (6) outputs... A telescopic seat (7) is fixedly installed at one end of the output shaft. A spring sleeve (8) is fixedly installed at the bottom of the telescopic seat (7) near the front end. A spring rod (9) is movably installed inside the spring sleeve (8). A brake block (10) is fixedly installed at the bottom of the spring rod (9). The bottom of the brake block (10) is in contact with the take-up and release device (3). A fixing block (11) is fixedly installed at the top of the inner cavity of the outer shell (1). The fixing block (11) is fixedly connected to the take-up and release device (3). The bottom of the inner cavity of the outer shell (1) is located at the take-up and release device (3). A charging device (12) is provided at the rear; the cable winding and unwinding device (3) includes a base (31), the top of the base (31) is movably fitted with a main shaft (32) by means of a bearing connection, the bottom of the main shaft (32) is snapped with a rotary spring (33), the bottom of the rotary spring (33) is fixedly connected to the bottom surface of the inner wall of the base (31), the rotary spring (33) can drive the main shaft (32) to reset in the direction of rotation, the top of the main shaft (32) is provided with a travel depth hole (34), the inside of the travel depth hole (34) is connected by a telescopic mechanism The travel shaft (35) is installed in a movable manner. A mating shaft (36) is fixedly installed at the center of the bottom of the travel deep hole (34). A mating hole (37) is opened at the bottom of the travel shaft (35) and is telescopically mated with the mating shaft (36). The cross section of the mating shaft (36) is cross-shaped. The travel shaft (35) is connected to the top and bottom of the inner cavity of the travel deep hole (34) by two sets of springs respectively. A winding device (38) is fixedly installed at the top of the travel shaft (35). A locking device (39) is fixedly installed at the top of the mating hole (37).The winding device (38) includes a winding frame (381), with connecting shafts (382) at both the top and bottom of the winding frame (381). A charging cable (383) is wound around the outer surface of the winding frame (381). One end of the charging cable (383) is connected to the charging device (12), and the other end is provided with a charging head (384). A bearing is provided on the outer surface of the connecting shaft (382), and a guide plate (385) is movably sleeved through the bearing. A connecting plate (386) is fixedly installed on the outer surface of the guide plate (385). An annular plate (387) is fixedly installed at one end of the connecting plate (386). A wire hole (388) is opened on the front of the annular plate (387), and a wire outlet device (301) is fixedly installed on the front of the annular plate (387) at the position corresponding to the wire hole (388).

2. The new energy vehicle charging pile according to claim 1, characterized in that, The locking device (39) includes a synchronous shaft (3901), a limiting sleeve (3902) is movably fitted on the top of the synchronous shaft (3901), the top of the limiting sleeve (3902) is fixedly connected to the fixing block (11), a limiting disc (3903) is provided on the outer surface of the synchronous shaft (3901) near the middle, the top of the limiting disc (3903) is provided with an annular groove, and a brake disc (3904) is installed inside the annular groove, a locking disc (3905) is movably fitted on the outer surface of the limiting disc (3903) near the top, a push rod (3906a) and a stop rod (3906b) are respectively fixedly installed on the outer surface of the limiting disc (3903) near the bottom, the front of the stop rod (3906b) is provided with a stroke hole (3907), and the stop rod (3906b) is provided with a stroke hole (3907). A contact sensor (3908) is provided on the front of the stop rod (3906b) below the travel hole (3907). A locking strip (3909) is provided on the top of the locking disc (3905). A first travel rod (3910) is fixedly installed on the bottom of the locking disc (3905). An arc rod (3911) is fixedly installed on one side of the first travel rod (3910). In the initial state, the first travel rod (3910) is located between the push rod (3906a) and the stop rod (3906b) and is in contact with the push rod (3906a). The arc rod (3911) cooperates with the travel hole (3907). A return spring (3912) is provided at one end of the arc rod (3911). One end of the return spring (3912) is connected to the push rod (3906a).

3. A new energy vehicle charging pile according to claim 2, characterized in that, The locking bar (3909) has a right-angled triangle cross section and is distributed in a circular array.

4. A new energy vehicle charging pile according to claim 3, characterized in that, The cable outlet device (301) includes a cable outlet frame (3011). The cable outlet frame (3011) has bypass holes (3012) on both sides. A second stroke rod (3013) is fixedly installed on both sides of the cable outlet frame (3011) at positions corresponding to the bypass holes (3012). A stroke frame (3014) is movably installed on the outer surface of the second stroke rod (3013). A sliding bushing (3015) is provided on the top of the stroke frame (3014) at a position outside the second stroke rod (3013). A stroke spring (3016) is provided on the bottom of the stroke frame (3014) at a position outside the second stroke rod (3013). A connecting frame (3017) is fixedly installed on one end of the stroke frame (3014). Cable outlet guide wheels (3018) are movably sleeved on one side of the connecting frame (3017) near the top and bottom. An arc-shaped groove is provided on the outer surface of the cable outlet guide wheel (3018) near the middle.

5. A new energy vehicle charging pile according to claim 4, characterized in that, The charging cable (383) passes through the arc groove between the two cable guide wheels (3018). The cable guide wheel (3018) is equipped with a rotation sensor inside, which can identify the number of rotations of the cable guide wheel (3018).

6. A new energy vehicle charging pile according to claim 5, characterized in that, The cable loosening device (4) includes a first telescopic machine (41), a cable loosening frame (42) is fixedly installed on the top of the first telescopic machine (41), a cable loosening roller (43) is provided on the top of the cable loosening frame (42), and the charging cable (383) passes through the position between the cable loosening frame (42) and the cable loosening roller (43).

7. A new energy vehicle charging pile according to claim 6, characterized in that, The output end of the contact sensor (3908) is connected to the input end of the second telescopic machine (6) and the first telescopic machine (41) via a signal connection. The output end of the rotation sensor installed inside the cable guide wheel (3018) is connected to the input end of the first telescopic machine (41) via a signal connection.

8. A new energy vehicle charging pile according to claim 7, characterized in that, The bottom of the brake block (10) is initially in contact with the top surface of the locking disc (3905).

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