Charging cable automatic take-up and pay-off device

Abstract

The utility model discloses an automatic charging cable take-up and pay-off device which comprises a charging gun, a motor mounting plate, a slip ring mounting plate, a cable guide piece, a gear motor, a spiral winding roll and a plurality of roller rotating shafts, and the motor mounting plate and the slip ring mounting plate are oppositely arranged at the two ends of the cable guide piece in parallel. A plurality of roller rotating shafts are oppositely arranged on the inner walls of the motor mounting plate and the slip ring mounting plate, the gear motor is mounted on the motor mounting bracket, the spiral winding roll is driven by the gear motor, a main body of a charging cable of the charging gun extends along the spiral groove, and the other end of the charging cable extends out of the spiral winding roll and is connected with the charging head. The device is compact in overall structure, small in occupied space, stable and safe, and the cables can be wound and unwound without manual intervention.

Description

Technical Field

[0001] The utility model relates to the technical field of cable retracting equipment, and specifically to an automatic retracting device for charging cables of a charging robot. Background Art

[0002] With the popularization of electric vehicles and the advancement of intelligent technology, charging robots as a new type of charging equipment have also developed rapidly. The device that automatically organizes and stores charging cables is one of the core hardware functions of the charging robot. Through the built-in intelligent control system and mechanical device, the charging robot can automatically retract the cable after completing the charging task, avoiding the clutter and entanglement of the cable, while also improving the safety and efficiency of the equipment.

[0003] Existing charging cable retracting devices either require manual intervention or have complex mechanical and electrical structures, which are prone to the following defects:

[0004] 1. Unstable cable retraction and release: The cable is prone to twisting, knotting or loosening during the retraction and release process, affecting the service life and performance of the cable.

[0005] 2. Cable wear: The part of the cable that contacts the device may wear during the retraction and release process, especially when the bending radius is too small, the cable surface quality is poor or the lubrication is insufficient. Wear may cause the cable to break or performance degradation.

[0006] 3. Poor cable clamping: The clamping mechanism in the cable retracting device may not clamp properly due to unreasonable design, poor manufacturing quality or improper operation, causing the cable to slip, get tangled or break during the retraction process. Utility Model Content

[0007] Technical purpose: In view of the above problems, the utility model provides a simple, stable and reliable automatic retractable charging cable device that can be used for charging robots.

[0008] Technical solution: To achieve the above technical objectives, the utility model adopts the following technical solution:

[0009] A charging cable automatic retracting and releasing device includes a charging gun, a motor mounting plate, a slip ring mounting plate, a cable guide, a reduction motor, a spiral winding drum and a plurality of roller shafts.

[0010] The motor mounting plate and the slip ring mounting plate are arranged parallel to each other at the two ends of the cable guide, and multiple groups of damping rollers are arranged on the inner walls of the motor mounting plate and the slip ring mounting plate. The two ends of each roller shaft are respectively connected to a group of damping rollers to form a frame structure with an intermediate accommodation space.

[0011] The inner wall of the motor mounting plate is provided with a motor mounting bracket, the inner wall of the slip ring mounting plate is provided with a pillar and a slip ring sleeved on the pillar, the reduction motor is installed on the motor mounting bracket, the end of the output shaft of the reduction motor is butted with the end of the pillar, and the output shaft of the reduction motor is provided with a motor connector;

[0012] The spiral winding drum is placed in the middle accommodation space of the frame structure and its axis is parallel to the output shaft of the reduction motor. The spiral winding drum is a hollow cylindrical structure. A radial partition connected to the motor connector is provided inside the spiral winding drum. A spiral groove is provided on the outer wall of the spiral winding drum along the axial direction.

[0013] The charging gun includes a charging head and a charging cable, one end of the charging cable is fixed inside the spiral winding drum, the main body of the charging cable extends along the spiral groove, and the other end of the charging cable extends out of the spiral winding drum and is connected to the charging head.

[0014] Preferably, the motor mounting plate is provided with a groove, the reduction motor is installed in the groove, and a support bearing is provided between the outer wall of the groove and the inner wall of the spiral winding drum.

[0015] Preferably, the device also includes a cable fixing clamp, a cable control module, a sensor bracket and a contact sensor. The cable fixing clamp is installed at the connection between the charging cable and the charging head, the sensor bracket is arranged on the inner side of the slip ring mounting plate, and the contact sensor is installed on the sensor bracket for detecting the position information of the cable fixing clamp.

[0016] Preferably, the cross section of the spiral groove of the spiral winding reel is a trapezoidal structure that is narrow at the bottom and wide at the top.

[0017] Preferably, a cable fixing piece is provided inside the spiral cable reel for fixing one end of the charging cable.

[0018] Preferably, a brush plate is provided at the bottom of the cable guide.

[0019] Beneficial effects: Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0020] The automatic charging cable retracting and releasing device designed by the utility model has a compact overall structure and occupies little space through designs such as a motor directly driven cable reel and an independent bearing support. The cable retracting and releasing does not require manual intervention, and a mechanical touch sensor is installed at the end of the cable, which is stable and safe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of an automatic charging cable retracting device proposed in Example 1;

[0022] Figure 2 for Figure 1 A cross-sectional view of the automatic retractable device for the charging cable;

[0023] Figure 3 for Figure 1 Bottom view of

[0024] Figure 4 for Figure 1 A partial schematic diagram of the cable guide and the charging head;

[0025] Figure 5 for Figure 4 A top view of

[0026] Among them, 1-motor mounting plate, 2-reduction motor, 3-charging gun, 4-cable fixing clamp, 5-cable guide, 6-sensor bracket, 7-contact sensor, 8-slip ring mounting plate, 9-spiral winding drum, 10-roller shaft, 11-damping roller, 12-support bearing, 13-motor mounting bracket, 14-motor connector, 15-slip ring, 16-cable control module, 17-brush plate, 18-pillar, 19-radial partition. DETAILED DESCRIPTION

[0027] The embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0028] Embodiment 1

[0029] like Figures 1 to 5 As shown, a charging cable automatic retracting device,

[0030] In this embodiment, the motor mounting plate 1 and the slip ring mounting plate 8 form an integral frame through the cable guide 5, which can be fixed on the external structural support, the reduction motor 2 is mounted on the motor mounting bracket 13, the motor mounting bracket 13 is fixedly connected to the motor mounting plate 1, the motor connecting member 14 is fixed on the output shaft of the reduction motor 2, the motor connecting member 14 is fixedly connected to the spiral winding drum 9, a support bearing 12 is installed between the spiral winding drum 9 and the motor mounting bracket 13, the slip ring 15 is fixed on the pillar 18 on the inner side of the slip ring mounting plate 8, the cable control module 16 is mounted on the spiral winding drum 9, a group of brush plates 17 are mounted on the lower part of the cable guide 5, the contact sensor 7 is mounted on the sensor bracket 6, the sensor bracket 6 is fixed inside the cable guide 5, the gun head of the charging gun 3 is freely hanging, and the cable clamp 4 is fixed at a certain position on the upper part of the gun head of the charging gun 3. More cables of the charging gun 3 outside the position of the cable clamp 4 are coiled in the spiral winding drum 9 and finally fixed at the position of the cable control module 16, and the cable control module 16 acts as a cable fixing member. Two roller shafts 11 are fixed on the motor mounting plate 1 and the slip ring mounting plate 8 respectively. The damping roller 10 can roll between the two roller shafts 11. The large torque reduction motor is matched with the damping roller, which has strong power and can effectively resist the external force pulling the cable, prevent dragging, and prevent the cable from falling even if the power is off. The reduction motor 2 is equipped with an encoder to accurately control the length of the retractable line.

[0031] like Figure 2 As shown, the motor mounting plate 1 is provided with a groove, the reduction motor 2 is installed in the groove, a support bearing 12 is provided between the outer wall of the groove and the inner wall of the spiral winding drum 9, the support bearing 12 provides stable support for the entire system, the end of the output shaft of the reduction motor 2 is butt-jointed with the end of the support 18, the output shaft of the reduction motor 2 is provided with a motor connector 14, the motor connector 14 is connected to the radial partition 19 inside the spiral winding drum 9, to facilitate the disassembly and assembly of the motor.

[0032] This structure can complete the automatic retraction and release of the cable of the charging gun 3. The power is provided by the reduction motor 2, which drives the spiral winding drum 9 to rotate, so that the cable can be orderly retracted and released in the spiral groove of the spiral winding drum 9. During the retraction and release process, the horizontal degree of freedom is limited by the cable guide 5, and the vertical degree of freedom is limited by multiple groups of damping rollers 10. The cable is free to droop or retract along the spiral line, and the remaining degrees of freedom are constrained. The trapezoidal spiral teeth on the surface of the spiral winding drum 9 ensure that the cable finally falls into the spiral depression, and the trapezoidal spiral teeth will not damage the cable sheath while guiding.

[0033] The detection of the cable in place is achieved by the cable clamp 4 touching the contact sensor 7. The presence of the brush plate 17 realizes the self-cleaning function, so that foreign matter, dust, etc. attached to the cable outside the structure are not easily brought into the spiral winding drum 9, effectively keeping the interior clean. The cable control module 16 structure can be used to fix the installation of cable connectors, bundle wire harnesses, etc., and functional devices such as wire harness tension sensors and temperature sensors can be installed as required. It is also possible to add tension sensors and temperature sensors to the spiral winding drum 9 to sense the tension state of the charging cable in real time. If there is an abnormality, an alarm can be given in time to minimize mechanical damage to the system, and the temperature information of the wire harness can be sensed in real time. Problems that may cause high temperature, such as charging overload, charging abnormality, and wire harness aging, can be discovered in time to avoid potential safety hazards.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the above embodiments do not limit the utility model in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the utility model.

Claims

1. A charging cable automatic retracting device, characterized in that: It comprises a charging gun (3), a motor mounting plate (1), a slip ring mounting plate (8), a cable guide (5), a reduction motor (2), a spiral winding drum (9) and a plurality of roller shafts (10). The motor mounting plate (1) and the slip ring mounting plate (8) are arranged relatively parallel to each other at the two ends of the cable guide (5); a plurality of groups of damping rollers (11) are arranged relatively on the inner walls of the motor mounting plate (1) and the slip ring mounting plate (8); and a group of damping rollers (11) are respectively connected to the two ends of each roller shaft (10), thereby forming a frame structure with an intermediate accommodation space; The inner wall of the motor mounting plate (1) is provided with a motor mounting bracket (13), the inner wall of the slip ring mounting plate (8) is provided with a pillar (18) and a slip ring (15) sleeved on the pillar (18), the reduction motor (2) is mounted on the motor mounting bracket (13), the end of the output shaft of the reduction motor (2) is butted with the end of the pillar (18), and the output shaft of the reduction motor (2) is provided with a motor connecting piece (14); The spiral winding drum (9) is placed in the middle accommodation space of the frame structure and its axis is parallel to the output shaft of the reduction motor (2). The spiral winding drum (9) is a hollow cylindrical structure. A radial partition (19) connected to the motor connecting member (14) is provided inside the spiral winding drum (9). A spiral groove is provided on the outer wall of the spiral winding drum (9) along the axial direction. The charging gun (3) comprises a charging head and a charging cable, one end of the charging cable is fixed inside the spiral winding drum (9), the main body of the charging cable extends along the spiral groove, and the other end of the charging cable extends out of the spiral winding drum (9) and is connected to the charging head.

2. The automatic charging cable retracting device according to claim 1, characterized in that: The motor mounting plate (1) is provided with a groove, the reduction motor (2) is installed in the groove, and a support bearing (12) is provided between the outer wall of the groove and the inner wall of the spiral winding drum (9).

3. The automatic charging cable retracting device according to claim 1, characterized in that: The device further comprises a cable fixing clamp (4), a cable control module (16), a sensor bracket (6) and a contact sensor (7); the cable fixing clamp (4) is mounted at the connection between the charging cable and the charging head; the sensor bracket (6) is arranged on the inner side of the slip ring mounting plate (8); and the contact sensor (7) is mounted on the sensor bracket (6) and is used to detect position information of the cable fixing clamp (4).

4. The automatic charging cable retracting device according to claim 1, characterized in that: The cross section of the spiral groove of the spiral winding drum (9) is a trapezoidal structure that is narrow at the bottom and wide at the top.

5. The automatic charging cable retracting device according to claim 1, characterized in that: The spiral cable reel (9) is provided with a cable fixing member inside for fixing one end of the charging cable.

6. The automatic charging cable retracting device according to claim 1, characterized in that: A brush plate (17) is provided at the bottom of the cable guide (5).

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