A charging gun cable untwisting device

Abstract

The utility model belongs to new energy technology field especially relates to a charging gun cable untwisting device, including the fixed block of installing below the charging stake gun insertion mouth, the fixed block is slidably connected with the symmetrically arranged clamping block, the two clamping blocks relative surface all symmetrically open the recess of arc, the recess of two clamping blocks contacts, and two recesses can constitute a through -hole for charging gun cable to pass through and move, the fixed block still is installed with the drive device of drive clamping block sliding. Compared with prior art, the utility model sets up the clamping block, solves the pertinence solution of the problem of the twist of the lack of the cable non - standard homing, leads to the technical problem of the user gun when being rotated gun head injury.

Description

Technical Field

[0001] This utility model belongs to the field of new energy technology, and specifically relates to a charging gun cable untwisting device. Background Technology

[0002] With the rapid development of the global new energy vehicle industry, the number of electric vehicles on the road continues to rise, leading to an explosive growth in the construction of supporting charging infrastructure. Charging piles are now widely distributed in residential communities, commercial complexes, transportation hubs, and public parking lots. Among these, shared charging piles, due to their convenience and high resource utilization, have become a core facility for meeting the public's temporary charging needs. As a key connecting component between the charging pile and the electric vehicle, the charging gun's safety and convenience directly impact user experience and equipment reliability. The charging gun cable, as the carrier of electrical energy, must withstand frequent dragging, bending, and torsion forces during the insertion, removal, and movement of the charging gun.

[0003] In actual use, due to differences in user operating habits, most users often fail to tidy up the charging gun cable after charging and directly insert the twisted charging gun back into the charging station socket. Specifically, when a user pulls out the charging gun to charge their vehicle, the cable may twist due to the dragging process. After charging is complete, if the user does not rotate the gun head or straighten the cable to release the torque before forcibly inserting the charging gun back into the charging station socket, the twisted state of the cable will be "locked" onto the returned gun body. With repeated insertion and removal of the charging gun and improper return, the degree of twisting of the cable will gradually accumulate, storing a certain amount of elastic torque inside, and this torque will continue to increase with the frequency of use. When the next user pulls out the twisted charging gun from the charging station, the torque stored in the cable will be released instantly, causing the charging gun head to rotate and swing rapidly. When the user holds the gun head or body, there is no place to place the charging gun head, and the user subconsciously continues to hold the charger, which can easily cause collision injuries to the hands, arms, and other parts of the body. In addition, cables that are in a twisted state for a long time will suffer fatigue damage to their insulation layer due to continuous torsional stress, which will accelerate aging and cracking and may cause charging safety accidents such as leakage and short circuit. At the same time, torsional stress can also cause problems such as broken strands and poor contact in the internal conductors of the cable, affecting the stability of power transmission and shortening the service life of the charging gun.

[0004] In summary, the current charging pile and charging gun systems lack specific solutions for the twisting problem caused by improper cable repositioning. This poses a safety risk to users who may be injured by the rotating gun head when removing the charging gun, as well as potential equipment damage due to long-term cable twisting. There is an urgent need for a technical means to effectively solve the above problems in order to improve the safety and reliability of charging gun use. Utility Model Content

[0005] This utility model aims to provide a charging gun cable untwisting device, mainly to solve the technical problem of the lack of a targeted solution for the twisting problem caused by improper cable repositioning in the existing technology, which leads to the user being injured by the rotating gun head when pulling out the gun.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A charging gun cable untwisting device includes a fixing block installed below the charging pile plug port. The fixing block is slidably connected with symmetrically arranged clamping blocks. The opposing surfaces of the two clamping blocks are symmetrically provided with arc-shaped grooves. After the grooves of the two clamping blocks come into contact, the two grooves can form a through hole for the charging gun cable to pass through and move. The fixing block is also equipped with a driving device for driving the clamping blocks to slide.

[0007] Preferably, the fixing block has a T-slot arranged laterally along its length, and a bidirectional lead screw is disposed within the T-slot. Mounting plates are fixed to both ends of the T-slot, and the two mounting plates are rotatably connected to both ends of the bidirectional lead screw. A motor is also fixed to the fixing block, and the output shaft of the motor is coaxially fixed to the end of the bidirectional lead screw. Both ends of the bidirectional lead screw are threadedly connected to T-shaped sliders that match the T-slot. The sliders are located at the opening of the T-slot and fixed to the clamping block. In this design, the clamping block moves symmetrically under the drive of the motor.

[0008] Preferably, it also includes a detent device fixed on the charging gun. The detent device includes a cylindrical sleeve fixed at the tail end of the charging gun where it connects to the cable. A movable sleeve is connected to the outer surface of the cylindrical sleeve, and the cylindrical sleeve and the movable sleeve are coaxially rotatably connected.

[0009] Preferably, the movable sleeve has an outwardly extending limiting ring fixed at one end near the charging gun head.

[0010] Preferably, the through hole is a strip-shaped hole.

[0011] Preferably, the upper edge of the through hole is rounded.

[0012] Preferably, the T-slot has brushes attached to its groove edge, and the slider can move between the brushes.

[0013] The beneficial effects of this utility model are as follows: 1. In this solution, when the user pulls the charging gun out of the charging station, the charging gun has a large deflection force due to the twisting of the charging gun cable. At this time, the user can insert the end of the charging gun head connected to the cable into the through hole and gently rotate the gun head until the torque disappears. Then, the user can operate the drive device to separate the two clamps and take out the charging gun to charge the electric vehicle. This solves the technical problem of the charging gun rebounding and injuring people when it is pulled out when the charging gun is pulled out due to the twisting of the charging gun cable in traditional charging station use.

[0014] 2. This device is located below the charging gun insertion port. When the charging gun is pulled out, there is a torque. The user can quickly place the charging gun on this device to untwist it. Because the distance is set very close, the user has enough reaction time to avoid being injured by the rebound of the charging gun. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is a three-dimensional structural diagram (clamp block open) of a charging gun cable untwisting device according to this utility model patent. Figure 2 This is a three-dimensional structural diagram (with clamping blocks combined) of a charging gun cable untwisting device for this utility model patent. Figure 3 This is an exploded view of the structure of a charging gun cable untwisting device according to this utility model patent. Figure 4 This utility model patent discloses a charging gun cable untwisting device. Figure 3 Enlarged view of point A; Figure 5 This utility model patent discloses a charging gun cable untwisting device. Figure 3 The structural merging diagram.

[0017] The reference numerals in the accompanying drawings include: charging pile 1, charging gun 2, on / off switch 3, fixing block 41, bidirectional lead screw 42, mounting plate 43, motor 44, slider 451, clamping block 452, brush 46, strip-shaped through hole 47, cylindrical sleeve 51, bearing 52, movable sleeve 53, limit ring 54, and cable 6. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0022] like Figures 1-5 As shown, a charging gun cable untwisting device is first provided with a fixing block. The four corners of the fixing block are fixed to the charging pile housing directly below the charging pile gun port by expansion bolts. The function of the fixing block is to provide an installation base for the other components of the entire device.

[0023] like Figure 3As shown, a T-slot is transversely formed along the length of the upper surface of the fixed block. A double-ended lead screw is installed inside the T-slot, with the threads at both ends of the lead screw turning in opposite directions. A mounting plate is welded to each end of the T-slot. A bearing mounting hole with a diameter matching the end of the double-ended lead screw is formed at the center of the inner side of each mounting plate. A deep groove ball bearing is installed in the bearing mounting hole with an interference fit. The two ends of the double-ended lead screw are respectively interference-fitted with the inner rings of the deep groove ball bearings on the two mounting plates. The double-ended lead screw achieves a rotatable connection with the mounting plate through the bearings, thereby achieving a rotatable installation with the fixed block. Its function is to drive the T-shaped sliders at both ends to move symmetrically by rotation.

[0024] A motor bracket is fixed to the left end face of the fixed block by bolts. A servo motor is fixed to the motor bracket by bolts. Its output shaft is aligned with one end of the bidirectional lead screw. The output shaft of the servo motor and the end of the bidirectional lead screw are connected by a flexible coupling. The function of the motor is to provide power for the rotation of the bidirectional lead screw. The flexible coupling can compensate for the coaxiality error between the motor output shaft and the bidirectional lead screw, ensuring transmission stability.

[0025] The left and right ends of the bidirectional lead screw are each threaded with a T-shaped slider whose cross-sectional shape is perfectly matched with the T-slot. The side of the slider extends out of the T-slot opening, and two threaded holes are opened on the surface of the extended part. The T-shaped slider is clearance-fitted with the inner wall of the T-slot to ensure that the slider can slide smoothly along the T-slot without obvious wobble. The function of the slider is to convert the rotational motion of the bidirectional lead screw into linear motion, which drives the clamp to open and close synchronously.

[0026] Two T-shaped sliders extend from their slots, each secured with a rectangular clamping block by bolts. The two clamping blocks are symmetrically positioned. Each clamping block has an arc-shaped groove at its center on its opposite surface; the groove opening of the left clamping block faces right, and the groove opening of the right clamping block faces left. When the two clamping blocks move closer together under the action of the sliders, the two arc-shaped grooves align to form a strip-shaped through-hole for the cable to pass through. The upper edge of the strip-shaped through-hole has rounded corners. When the charging gun is inserted into the charging station, the clamping blocks are located on the left and right sides of the charging gun's cable. The cable hangs naturally and falls within the range of the strip-shaped through-hole after the two clamping blocks are joined. The purpose of the strip-shaped through-hole is to allow the connection end of the charging gun cable to the gun head and the unwinding device to pass through and move. The strip shape of the through-hole makes it easier for the cable to fall into the range of the strip-shaped hole and be clamped when the clamping blocks are joined. Furthermore, the rounded corners of the upper edge of the strip-shaped through-hole prevent scratching the charging gun or cable during insertion and facilitate alignment.

[0027] A row of brushes is glued to both the top and bottom sides of the T-slot opening with epoxy resin. The brush bristles are made of nylon and are 10mm long. The tips of the two rows of brush bristles are in contact with each other. The T-slot slides through the two rows of brushes. The function of the brushes is to prevent dust, sand and other impurities from entering the T-slot, so as to avoid impurities affecting the thread transmission between the bidirectional lead screw and the T-slot slide, while not affecting the normal sliding of the slide.

[0028] A control panel is bolted to the charging station. The control panel integrates a microcontroller. Its inputs are electrically connected to the encoder of the servo motor and to a sensor inside the charging gun plug (typically, in most charging stations, especially shared ones, the controller senses the charging gun returning to its position and initiates the next step; this sensor can be a microswitch-type return sensor, photoelectric return sensor, inductive proximity sensor, etc.). The output is connected to the servo motor via a relay. A position sensor is also fixed to the inner wall of the T-slot with screws, and it is electrically connected to the microcontroller in the control panel. The control panel allows users to operate the charging station's built-in program. The position sensor detects the extreme positions of the T-slot slider. When the slider reaches its extreme position (both maximum and minimum distances can be detected), the position sensor sends a signal to the controller, which then stops the servo motor to prevent overtravel and damage to components. The charging station is located next to the fixed block and is equipped with an on / off switch that is electrically connected to the controller. Pressing the on / off switch can control the motor to move and separate the two clamping blocks.

[0029] The device also includes a detent mechanism consisting of a cylindrical sleeve and a movable sleeve. Both the cylindrical sleeve and the movable sleeve are made of ABS plastic. Their inner diameters are matched to the outer diameter of the charging gun's tail (where it connects to the cable). The inner diameter of the movable sleeve is larger than the outer diameter of the cylindrical sleeve. The movable sleeve is fitted onto the outer surface of the cylindrical sleeve, and a bearing is installed between the cylindrical sleeve and the movable sleeve with an interference fit. The inner ring of the bearing is interference-fitted with the outer surface of the cylindrical sleeve, and the outer ring is interference-fitted with the inner surface of the movable sleeve. The outer diameter of the movable sleeve is smaller than the width of the slotted hole, allowing it to be easily inserted into the slotted hole. In use, if the charging gun is pulled out, torque accumulates in the charging gun. The user immediately inserts the movable sleeve on the charging gun into the slotted hole. Under the action of torque, the charging gun head begins to rotate. The function of the cylindrical sleeve and the movable sleeve is to allow the charging gun to rotate with minimal resistance even when it is fixed on the clamp. If the torque of the charging gun cable is insufficient to rotate the charging gun itself, the user can gently assist the charging gun head to rotate and release the torque.

[0030] like Figure 2 ,like Figure 5As shown, the movable sleeve has an integrally formed outward-extending limiting ring at the end near the charging gun head. The function of the limiting ring is to prevent the charging gun from being directly tilted into the strip hole and locked in place. With the limitation of the limiting ring, the movable sleeve can only be inserted vertically into the strip hole.

[0031] The process of using the charging gun cable untwisting device is as follows: After the customer finishes using the charging gun, he inserts the charging gun back into the charging pile's socket. Then, the sensor in the socket senses that the charging gun has returned to its original position and sends a signal to the controller. The controller controls the servo motor to rotate forward, which drives the bidirectional lead screw to rotate. The bidirectional lead screw drives the two left and right T-shaped sliders to slide relative to each other along the T-shaped groove, which in turn drives the two clamping blocks to move closer to each other until the two clamping blocks fit together so that the two arc-shaped grooves merge into a strip-shaped through hole and clamp the charging gun cable. When the user pulls the charging gun out of the charging station, if the cable twists and causes the charging gun to deflect, the user should immediately insert the end of the charging gun with the untwisting device (with the movable sleeve facing outward) into the strip-shaped through hole. The user should then push the charging gun head to rotate gently. The cylindrical sleeve will rotate in the movable sleeve through the sliding bearing, causing the charging gun cable to rotate synchronously until the cable torque disappears. After pressing the on / off switch, the controller controls the servo motor to reverse, causing the clamps to separate and the charging gun can be removed for charging; when the T-shaped slider slides to both ends of the T-slot, the position sensor triggers a signal, and the controller controls the motor to stop, completing one unwinding operation.

[0032] It is important to note that this device must be operated strictly according to the rule of first pulling out the charging gun and then pressing the on / off switch. Otherwise, it will not be able to protect the user. The charging gun will start to rotate and swing directly under the torque. If the operator does not have a place to quickly put the charging gun down, he / she will be injured by the rebound of the charging gun.

[0033] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it is obvious that many changes and variations can be made based on the above teachings. Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. The purpose of selecting and describing exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art, after reading this specification, can make modifications, substitutions, variations, and various choices and changes to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, variations, and choices and changes are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A charging gun cable untwisting device, characterized in that, The device includes a fixing block installed below the charging gun port of the charging pile. Symmetrically arranged clamping blocks are slidably connected to the fixing block. The two clamping blocks have symmetrically opened arc-shaped grooves on their opposite surfaces. When the grooves of the two clamping blocks come into contact, the two grooves can form a through hole for the charging gun cable to pass through and move. The fixing block is also equipped with a driving device to drive the clamping blocks to slide.

2. The charging gun cable untwisting device according to claim 1, characterized in that, The fixing block has a T-shaped groove arranged laterally along its length. A bidirectional lead screw is installed in the T-shaped groove. Mounting plates are fixed to both ends of the T-shaped groove, and the two mounting plates are rotatably connected to both ends of the bidirectional lead screw. A motor is also fixed to the fixing block, and the output shaft of the motor is coaxially fixed to the end of the bidirectional lead screw. Both ends of the bidirectional lead screw are threadedly connected to T-shaped sliders that match the T-shaped groove. The sliders are located at the opening of the T-shaped groove and fixed to the clamping block.

3. The charging gun cable untwisting device according to claim 2, characterized in that, It also includes a detent device fixed on the charging gun, the detent device comprising a cylindrical sleeve fixed at the tail end of the charging gun where it connects to the cable, a movable sleeve connected to the outer surface of the cylindrical sleeve, and the cylindrical sleeve and the movable sleeve being coaxially rotatably connected.

4. A charging gun cable untwisting device according to claim 3, characterized in that, The movable sleeve has an outwardly extending limiting ring fixed at one end near the charging gun head.

5. A charging gun cable untwisting device according to claim 4, characterized in that, The through hole is a strip-shaped hole.

6. A charging gun cable untwisting device according to claim 5, characterized in that, The upper edge of the through hole is rounded.

7. A charging gun cable untwisting device according to claim 6, characterized in that, The T-slot has brushes attached to its edge, and the slider can move between the brushes.

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