Charging pile capable of preventing over-pulling of charging gun cable

Abstract

The charging pile comprises a shell and an automatic take-up and pay-off mechanism, a display screen is arranged at the upper end of the front side of the shell, a cable box is arranged on the right side of the shell, an end cover is arranged on the right side of the cable box, a slot is formed in the upper end of the front side of the cable box, and a connector is arranged at the lower end of the rear side wall of the cable box. A charging gun head is inserted in the slot, a cable is arranged between the charging gun head and the connector, the automatic take-up and pay-off mechanism is arranged in the cable box, and the automatic take-up and pay-off mechanism and the cable are installed in a matched mode; the transformer is arranged in the shell, and the single chip microcomputer is arranged in the middle of the front end of the shell. Automatic winding and unwinding of the cable are achieved through friction force of the rubber guide wheel and vertical displacement of the guide wheel, the winding and unwinding process is more stable, the influence on the cable is smaller, a vehicle owner can be reminded in time, and the cable is prevented from being damaged due to excessive pulling.

Description

Technical Field

[0001] The utility model relates to the technical field of charging piles, in particular to a charging pile with a charging gun cable that can be prevented from being over-pulled. Background Art

[0002] Electric vehicles use electric motors to replace internal combustion engines. Electric motors convert the electrical energy provided by the battery pack into mechanical energy to drive the vehicle. The charging pile can safely provide electrical energy to the battery pack in the car. When using the charging pile to charge the vehicle, you need to pick up the charging gun head, pull the cable out of the charging pile, and then connect the charging gun head to the charging socket on the vehicle to charge.

[0003] Due to the distance between the charging pile and the vehicle, when the distance is too far and exceeds the length of the cable, the charging gun head cannot be inserted into the charging socket. At this time, some car owners will pull the cable, causing damage to the cable and breakage. Most of the existing charging piles have a winch-type cable retracting mechanism inside, which uses a motor to drive the winch to rotate to achieve automatic retraction and release of the cable. The traditional charging gun cable retracting and releasing mechanism does not have an anti-over-pull mechanism. The cable is retracted and released through a winch, and the cable is wound around the winch in a ring shape. If this continues for a long time, the cable will bend, deform, or even break, posing a huge safety hazard. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a charging pile with a charging gun cable that can prevent over-pulling. The cable is automatically retracted and released through the friction of the rubber guide wheel and the up and down displacement of the guide wheel. The retraction and release process is smoother and has less impact on the cable. An automatic alarm function is also provided to remind the car owner in time to prevent damage to the cable due to over-pulling, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a charging pile for preventing over-pulling of a charging gun cable, comprising a housing and an automatic wire-retracting and releasing mechanism;

[0006] A display screen is provided at the upper front end of the shell, a cable box is provided at the right side of the shell, an end cover is provided at the right side of the cable box, a slot is provided at the upper front end of the cable box, a connector is provided at the lower end of the rear side wall of the cable box, a charging gun head is plugged into the slot, and a cable is provided between the charging gun head and the connector;

[0007] The automatic wire-retracting and -releasing mechanism is arranged inside the cable box, and the automatic wire-retracting and -releasing mechanism is installed in coordination with the cable;

[0008] It also includes a transformer and a single-chip microcomputer. The transformer is arranged inside the shell, and the single-chip microcomputer is arranged in the middle of the front end of the shell. The input end of the single-chip microcomputer is electrically connected to an external power supply, the input end of the display screen is electrically connected to the output end of the single-chip microcomputer, and the input end of the connector is electrically connected to the output end of the single-chip microcomputer. The transformer is connected in series between the connector and the single-chip microcomputer. The friction force of the rubber guide wheel and the up and down displacement of the guide wheel are used to realize the automatic retraction and release of the cable. The retraction and release process is smoother and has less impact on the cable. An automatic alarm function is also provided to remind the owner in time to prevent over-pulling and damage to the cable.

[0009] Furthermore, the automatic wire retracting and releasing mechanism includes a groove, a screw rod, a slider and a guide wheel. The grooves are respectively opened at the front and rear ends of the left side wall of the cable box, the screw rods are rotatably connected to the inside of the grooves, the sliders are slidably connected to the inside of the grooves, the sliders are threadedly connected to the outer surface of the screw rod through threaded holes, and the guide wheels are rotatably connected to the middle of the right side of the slider, providing a basis for the retraction and release of the charging gun cable.

[0010] Furthermore, the thread directions of the outer surface of the screw rod are opposite, the front slider is located at the lower end of the outer surface of the front screw rod, and the rear slider is located at the upper end of the outer surface of the rear screw rod, so that the charging gun cable can be quickly retracted and released.

[0011] Furthermore, the automatic wire retracting and releasing mechanism also includes a pulley, a worm wheel, a motor 1 and a worm gear, the pulleys are all arranged at the lower end of the screw, the two pulleys are connected by belt transmission, the worm wheel is arranged at the lower end of the pulley on the rear side, the motor 1 is arranged on the rear side of the bottom wall of the cable box, the input end of the motor 1 is electrically connected to the output end of the single-chip microcomputer, the worm gear is arranged on the front side of the output shaft of the motor 1, and the worm wheel is meshingly connected with the worm gear to provide stable drive for the retraction and release of the charging gun cable.

[0012] Furthermore, the automatic wire retracting and releasing mechanism also includes a retracting and releasing component, which includes a rubber guide wheel and a gear. The rubber guide wheels are rotatably connected to the front side of the upper end of the left side wall of the cable box, and the outer edges of the two rubber guide wheels are in contact with each other. The gears are arranged on the right side of the rubber guide wheels, and the two gears are meshed and connected. The rubber guide wheel and the guide wheel are located on the same horizontal plane, and the inner walls of the rubber guide wheel and the guide wheel are entangled with the outer surface of the cable, providing a basis for the automatic retraction and releasing of the charging gun cable.

[0013] Furthermore, an installation groove is opened at the upper end of the left side wall of the cable box, and Motor 2 is arranged inside the installation groove. The input end of Motor 2 is electrically connected to the output end of the single-chip microcomputer, and the right side of the output shaft of Motor 2 is fixedly connected to the left side of the rubber guide wheel on the rear side, providing stable drive for the automatic retraction and extension of the charging gun cable.

[0014] Furthermore, it also includes a pressure sensor and an audible and visual alarm. The pressure sensor is arranged on the top wall of the groove on the right side, and the pressure sensor is electrically connected to the single-chip microcomputer in a bidirectional manner. The audible and visual alarm is arranged on the upper front side of the cable box, and the input end of the audible and visual alarm is electrically connected to the output end of the single-chip microcomputer, so that an alarm can be quickly sounded to prevent the cable from being damaged by over-pulling.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The friction of the rubber guide wheel and the up and down displacement of the guide wheel are used to realize the automatic retraction and release of the cable. The retraction and release process is smoother and has less impact on the cable.

[0017] 2. When the slider on the front side contacts the pressure sensor, the cable has reached its limit. The pressure sensor converts the pressure into an electrical signal and sends it to the single-chip microcomputer. The single-chip microcomputer controls motor 1 and motor 2 to stop, and at the same time controls the sound and light alarm to emit an alarm sound and alarm light to remind the operator that the cable has reached its extension limit. This can effectively prevent damage to the cable caused by over-pulling. It is also equipped with an automatic alarm function to remind the owner in time to prevent damage to the cable due to over-pulling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the automatic wire-retracting and -releasing mechanism of the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the automatic wire-retracting and -releasing mechanism of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the charging gun head and the automatic wire retracting and releasing mechanism of the utility model.

[0022] In the figure: 1 housing, 2 display screen, 3 cable box, 4 end cover, 5 transformer, 6 automatic wire retracting and releasing mechanism, 61 groove, 62 screw rod, 63 slider, 64 guide wheel, 65 pulley, 66 worm wheel, 67 motor 1, 68 worm, 69 retracting and releasing assembly, 691 rubber guide wheel, 692 gear, 693 motor 2, 7 slot, 8 connector, 9 cable, 10 charging gun head, 11 pressure sensor, 12 sound and light alarm, 13 installation slot, 14 single chip microcomputer. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-4 The present embodiment provides a technical solution: a charging pile with a charging gun cable that can prevent over-pulling, comprising a shell 1 and an automatic wire-retracting and -releasing mechanism 6; a display screen 2 is provided at the upper front end of the shell 1, a cable box 3 is provided at the right side of the shell 1, an end cover 4 is provided at the right side of the cable box 3, and evenly distributed heat dissipation holes are provided on the end cover 4 to facilitate heat dissipation and heat exchange maintenance work; a slot 7 is provided at the upper front end of the cable box 3, a connector 8 is provided at the lower end of the rear side wall of the cable box 3, a charging gun head 10 is plugged into the slot 7, and a cable 9 is provided between the charging gun head 10 and the connector 8.

[0025] Among them, the automatic wire-retracting mechanism 6 is arranged inside the cable box 3, and the automatic wire-retracting mechanism 6 is installed in conjunction with the cable 9; the automatic wire-retracting mechanism 6 includes a groove 61, a screw rod 62, a slider 63 and a guide wheel 64, the groove 61 is respectively opened at the front and rear ends of the left side wall of the cable box 3, the screw rod 62 is rotatably connected to the inside of the groove 61, the slider 63 is slidably connected to the inside of the groove 61, the slider 63 is threadedly connected to the outer surface of the screw rod 62 through a threaded hole, and the guide wheel 64 is rotatably connected In the middle of the right side of the slider 63, the thread directions of the outer surface of the screw rod 62 are opposite, the front slider 63 is located at the lower end of the outer surface of the front screw rod 62, and the rear slider 63 is located at the upper end of the outer surface of the rear screw rod 62. The automatic wire retracting and releasing mechanism 6 also includes a pulley 65, a worm wheel 66, a motor 67 and a worm 68. The pulleys 65 are all arranged at the lower end of the screw rod 62. The two pulleys 65 are connected by belt transmission. The worm wheel 66 is arranged at the lower end of the pulley 65 on the rear side. The motor 67 is arranged The automatic retractable wire mechanism 6 further comprises a retractable assembly 69, which comprises a rubber guide wheel 691 and a gear 692. The rubber guide wheels 691 are rotatably connected to the front side of the upper end of the left side wall of the cable box 3. The outer edges of the two rubber guide wheels 691 fit each other. The gears 692 are arranged on the rubber guide wheels 691. On the right side of 91, two gears 692 are meshed and connected, the rubber guide wheel 691 and the guide wheel 64 are located on the same horizontal plane, the inner walls of the rubber guide wheel 691 and the guide wheel 64 are entangled with the outer surface of the cable 9, and a mounting groove 13 is opened at the upper end of the inner side of the left side wall of the cable box 3, and the motor 2 693 is arranged inside the mounting groove 13, and the input end of the motor 2 693 is electrically connected to the output end of the single-chip computer 14, and the right side of the output shaft of the motor 2 693 is fixedly connected to the left side of the rubber guide wheel 691 on the rear side.

[0026] Among them: it also includes a transformer 5 and a single-chip microcomputer 14, the transformer 5 is arranged inside the shell 1, the single-chip microcomputer 14 is arranged in the middle of the front end of the shell 1, the input end of the single-chip microcomputer 14 is electrically connected to the external power supply, the input end of the display screen 2 is electrically connected to the output end of the single-chip microcomputer 14, the input end of the connector 8 is electrically connected to the output end of the single-chip microcomputer 14, the transformer 5 is connected in series between the connector 8 and the single-chip microcomputer 14, and also includes a pressure sensor 11 and an audible and visual alarm 12, the pressure sensor 11 is arranged on the top wall of the groove 61 on the right side, the pressure sensor 11 is bidirectionally electrically connected to the single-chip microcomputer 14, the audible and visual alarm 12 is arranged on the upper front side of the cable box 3, and the input end of the audible and visual alarm 12 is electrically connected to the output end of the single-chip microcomputer 14.

[0027] The working principle of the utility model is as follows:

[0028] When the charging gun is used to charge the vehicle, the charging gun head 10 is pulled out, and the single chip computer 14 controls the motor 167 to operate. The output shaft of the motor 167 drives the worm 68 to rotate forward. Because the worm wheel 66 is meshed with the worm 68, the worm wheel 66 will also rotate accordingly, driving the screw rod 62 and the pulley 65 on the rear side to rotate. Because the two pulleys 65 are connected by belt transmission, the front pulley 65 will also rotate accordingly, driving the front screw rod 62 to rotate forward. At this time, because the threads on the outer surfaces of the two screw rods 62 are in opposite directions, the two sliders 63 will move outward along the groove 61 as the screw rod 62 rotates, driving the guide wheel 64 to move, and the cable 9 begins to loosen from the tight state.

[0029] At the same time, the single chip computer 14 controls the operation of the second motor 693. The output shaft of the second motor 693 drives the rubber guide wheel 691 on the rear side to rotate forward. Because the two gears 692 are meshed and connected, the two rubber guide wheels 691 also move relative to each other. The rubber surface of the rubber guide wheel 691 is in close contact with the surface of the cable 9. The huge friction force pulls the cable 9 outward. The pulling speed of the cable 9 is always less than the moving speed of the slider 63, that is, the loosening speed, to ensure that the cable 9 is always located inside the groove of the guide wheel 64, so that the cable 9 can be pulled out without damage and the cable 9 can be effectively prevented from falling off.

[0030] When the slider 63 on the front side contacts the pressure sensor 11, the cable 9 has reached its limit. The pressure sensor 11 converts the pressure into an electrical signal and sends it to the single chip computer 14. The single chip computer 14 controls the motor 1 67 and the motor 2 693 to stop rotating, and controls the sound and light alarm 12 to emit an alarm sound and an alarm light to remind the operator that the cable 9 has reached its extension limit, which can effectively prevent the cable 9 from being damaged due to over-tensioning.

[0031] When the cable 9 needs to be retracted after charging, the single chip computer 14 controls the motor 1 67 and the motor 2 693 to operate. The motor 1 67 drives the two screw rods 62 to reverse, and drives the two sliders 63 to move inward along the groove 61 to tighten the cable 9. At this time, the motor 2 693 drives the rubber guide wheel 691 to reverse, and the two rubber guide wheels 691 also move relative to each other. The friction force pulls the cable 9 back, and the pulling back speed is also lower than the tightening speed. Until the cable 9 is completely pulled back, the charging gun head 10 is inserted back into the slot 7.

[0032] The utility model realizes automatic retraction and extension of the cable through the friction force of the rubber guide wheel and the up and down displacement of the guide wheel. The retraction and extension process is smoother and has less impact on the cable. An automatic alarm function is also provided to remind the car owner in time to prevent the cable from being damaged by over-pulling.

[0033] It is worth noting that the single-chip microcomputer 14 disclosed in the above embodiment is an S7-200 single-chip microcomputer, the motor 67 is a 1TL0003 motor, the motor 693 is a 60M-01330F5-A17 motor, the pressure sensor 11 is a YL60 pressure sensor, and the sound and light alarm 12 is a YD-D3B sound and light alarm. The single-chip microcomputer 14 controls the operation of the motor 67, the motor 693, the pressure sensor 11 and the sound and light alarm 12 using methods commonly used in the prior art.

[0034] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A charging pile with a charging gun cable that prevents over-pull, characterized in that: It comprises a housing (1) and an automatic wire-retracting and -releasing mechanism (6); The upper front end of the housing (1) is provided with a display screen (2); a cable box (3) is provided on the right side of the housing (1); an end cover (4) is provided on the right side of the cable box (3); a slot (7) is provided on the upper front end of the cable box (3); a connector (8) is provided on the lower rear side wall of the cable box (3); a charging gun head (10) is plugged into the slot (7); and a cable (9) is provided between the charging gun head (10) and the connector (8); The automatic wire-retracting and -releasing mechanism (6) is arranged inside the cable box (3), and the automatic wire-retracting and -releasing mechanism (6) is installed in coordination with the cable (9); The device also comprises a transformer (5) and a single-chip microcomputer (14), wherein the transformer (5) is arranged inside the housing (1), the single-chip microcomputer (14) is arranged in the middle of the front end of the housing (1), the input end of the single-chip microcomputer (14) is electrically connected to an external power supply, the input end of the display screen (2) is electrically connected to the output end of the single-chip microcomputer (14), the input end of the connector (8) is electrically connected to the output end of the single-chip microcomputer (14), and the transformer (5) is connected in series between the connector (8) and the single-chip microcomputer (14).

2. A charging pile for preventing over-pull of a charging gun cable according to claim 1, characterized in that: The automatic wire retracting and releasing mechanism (6) comprises a groove (61), a screw rod (62), a slider (63) and a guide wheel (64); the groove (61) is respectively opened at the front and rear ends of the left side wall of the cable box (3); the screw rod (62) is rotatably connected to the inside of the groove (61); the slider (63) is slidably connected to the inside of the groove (61); the slider (63) is threadedly connected to the outer surface of the screw rod (62) through a threaded hole; and the guide wheel (64) is rotatably connected to the middle of the right side of the slider (63).

3. A charging pile for preventing over-pull of a charging gun cable according to claim 2, characterized in that: The threads on the outer surface of the screw rod (62) are in opposite directions. The front slider (63) is located at the lower end of the outer surface of the front screw rod (62), and the rear slider (63) is located at the upper end of the outer surface of the rear screw rod (62).

4. A charging pile for preventing over-pull of a charging gun cable according to claim 3, characterized in that: The automatic wire retracting and releasing mechanism (6) further comprises a pulley (65), a worm wheel (66), a motor (67) and a worm (68), wherein the pulleys (65) are arranged at the lower end of the screw rod (62), the two pulleys (65) are connected by a belt transmission, the worm wheel (66) is arranged at the lower end of the pulley (65) on the rear side, the motor (67) is arranged on the rear side of the bottom wall of the cable box (3), the input end of the motor (67) is electrically connected to the output end of the single chip microcomputer (14), the worm (68) is arranged on the front side of the output shaft of the motor (67), and the worm wheel (66) is meshingly connected with the worm (68).

5. A charging pile for preventing over-pull of a charging gun cable according to claim 4, characterized in that: The automatic wire retracting and releasing mechanism (6) further comprises a retracting and releasing assembly (69), wherein the retracting and releasing assembly (69) comprises a rubber guide wheel (691) and a gear (692), wherein the rubber guide wheels (691) are rotatably connected to the front side of the upper end of the left side wall of the cable box (3), the outer edges of the two rubber guide wheels (691) are in contact with each other, the gears (692) are arranged on the right side of the rubber guide wheels (691), the two gears (692) are meshed and connected, the rubber guide wheels (691) and the guide wheels (64) are both located on the same horizontal plane, and the inner walls of the rubber guide wheels (691) and the guide wheels (64) are intertwined with the outer surface of the cable (9).

6. A charging pile for preventing over-pull of a charging gun cable according to claim 5, characterized in that: A mounting groove (13) is provided at the upper end of the left side wall of the cable box (3); a second motor (693) is arranged inside the mounting groove (13); an input end of the second motor (693) is electrically connected to an output end of the single-chip computer (14); and the right side of the output shaft of the second motor (693) is fixedly connected to the left side of the rubber guide wheel (691) at the rear side.

7. A charging pile for preventing over-pull of a charging gun cable according to claim 6, characterized in that: It also comprises a pressure sensor (11) and an audible and visual alarm (12), wherein the pressure sensor (11) is arranged on the top wall of the groove (61) on the right side, the pressure sensor (11) is bidirectionally electrically connected to the single-chip computer (14), and the audible and visual alarm (12) is arranged on the front side of the upper end of the cable box (3), and the input end of the audible and visual alarm (12) is electrically connected to the output end of the single-chip computer (14).

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