Cable winding and unwinding device and charging pile

Abstract

The utility model discloses a cable take-up and pay-off device for a charging pile. The cable take-up and pay-off device comprises a shell, a wire coil, a cable and a coil spring. A pawl is hinged to the shell; the wire coil is arranged in the shell and can rotate around a central shaft, and the tail end of the central shaft is fixedly connected with a ratchet wheel; and the cable is wound on the wire coil. And the coil spring drives the wire coil to rotate so as to take up and pay off the cable. The pawl and the ratchet wheel can form a ratchet wheel mechanism. When the pawl is separated from the ratchet wheel, the wire coil can rotate in the first direction or the second direction, the wire coil is used for winding and storing a cable when rotating in the first direction, and the wire coil is used for enabling the cable to extend out of the shell when rotating in the second direction; when the pawl locks the ratchet wheel to rotate, the wire coil cannot rotate in the first direction, and the cable is prevented from being accidentally loosened. According to the design, when people pull out the charging pile gun line through the cable take-up and pay-off device, automatic locking and automatic take-up can be achieved more safely.

Description

Technical Field

[0001] The utility model relates to the technical field of charging piles, and in particular to a cable retracting and releasing device. Background Art

[0002] As charging piles become increasingly common, charging pile cables, as a necessary connection method, pose significant safety concerns. Currently, charging pile cables in use are typically placed directly on the ground without any suspension devices. This not only makes the cables unsightly and susceptible to damage, but also poses a significant risk of electric shock or tripping accidents.

[0003] At present, in the existing technology, the charging pile cable suspension device, such as patent number: CN220114459U, discloses a charging pile charging gun suspension device. Compared with the comparative document, this application realizes automatic locking when the cable is pulled out, which is safer when using the charging gun.

[0004] Because of the existing technology, when people need to use the charging pile, they directly pull out the charging pile gun wire and place it directly on the ground, which can easily cause damage to the gun wire. At the same time, when people use the cable suspension device, the wire cannot be automatically locked after being released, which poses a safety hazard during the charging process. Utility Model Content

[0005] In order to solve the problems in the prior art that the charging pile gun wire is easily damaged when placed arbitrarily, people find it very difficult to pick up the charging pile gun wire, and when people use the cable suspension device, the cable cannot be automatically locked after being released, which poses a safety hazard during the charging process. The utility model provides a cable retracting device that can enable the charging pile to suspend the charging pile gun wire and not place it on the ground at will, and can automatically lock it during the release process, avoiding safety accidents caused by sudden retraction during the charging process. The utility model can play a role in safety, convenience and labor saving.

[0006] The utility model is achieved through the following technical solutions:

[0007] The charging pile cable retracting device provided by the embodiment of the first aspect of the utility model comprises: a housing, a cable reel, a cable and a coil spring;

[0008] The housing is hinged with a pawl;

[0009] The wire drum is arranged in the inner cavity of the shell, and the wire drum has a central shaft, which is rotatably connected to the shell. The central shaft sleeve is provided with a shaft sleeve, and the central shaft can rotate around its own axis to drive the wire drum to rotate; the end of the central shaft is fixedly connected to a ratchet;

[0010] The cable is wound on the cable drum;

[0011] The coil spring is arranged in the inner cavity of the wire drum, and the coil spring is fixedly connected to the inner wall of the wire drum;

[0012] The pawl can swing between a first position and a second position, and the pawl can form a ratchet mechanism with the ratchet;

[0013] When the pawl swings to the first position, the pawl disengages the ratchet wheel, allowing the cable drum to rotate in a first direction or a second direction; the first direction and the second direction are opposite to each other, and when the cable drum rotates in the first direction, it is used to wind and store the cable, and when the cable drum rotates in the second direction, it is used to extend the cable from the housing;

[0014] When the pawl is in the second position, the pawl locks the ratchet wheel from rotating, so that the wire drum cannot rotate in the first direction.

[0015] Preferably, a track plate is fixedly connected to the bottom of the shell, and the track plate has a groove, in which a steel ball is rollingly connected; a curved wheel groove is provided at the bottom of the wire drum, wherein the curved wheel groove of the wire drum corresponds to the groove of the track plate, a part of the steel ball is located in the curved wheel groove, and the outer surface of the steel ball is rollingly connected to the curved wheel groove to achieve buffering of the reeling and releasing wires.

[0016] Preferably, the bottom of the housing is fixedly connected to a track plate, the track plate has a groove, and a steel ball is rollingly connected in the groove;

[0017] The bottom of the wire drum is provided with a curved wheel groove;

[0018] The curved wheel groove of the wire drum corresponds to the groove of the track plate, a portion of the steel ball is located in the curved wheel groove, and the outer surface of the steel ball is rollingly connected to the curved wheel groove.

[0019] Preferably, the curved wheel groove of the wire drum includes an outer ring, a curved wheel track, an arc wheel track, and an elliptical ring track;

[0020] The elliptical ring track is centered on the central axis, one end of the curved wheel track is connected to the elliptical ring track, and the other end of the curved wheel track is connected to the outer ring; one end of the curved wheel track is connected to the elliptical ring track, and the other end of the curved wheel track is connected to the outer ring;

[0021] Wherein, when the wire drum rotates in the first direction, the steel ball rotates in the elliptical ring of the curved wheel groove;

[0022] When the wire drum rotates along the second direction, the steel balls rotate in the outer ring of the curved wheel groove.

[0023] Preferably, the pawl is provided with a reset torsion spring, and the reset torsion spring is used to make the pawl swing from the reset position to the reset position to the second position.

[0024] Preferably, a wire hoop is provided at the end of the cable, and a ring is provided on the wire hoop.

[0025] Preferably, the wire clamp is fixedly connected to the charging pile gun wire.

[0026] Preferably, a shaft elastic retaining ring is provided on the housing at the upper end of the central shaft to prevent the central shaft from shaking.

[0027] Preferably, the housing comprises: a mounting plate and an outer cover, the mounting plate is used to be mounted on the charging pile, the outer cover has an accommodating cavity for accommodating the cable reel, and the outer cover is connected to the mounting plate.

[0028] Preferably, the outer cover is provided with a wire hole for the cable to pass through, and the wire hole is provided with a sheath for contacting the outer surface of the cable, so as to reduce friction generated when the cable is retracted or extended.

[0029] Preferably, the charging pile includes the cable retracting device.

[0030] Compared with the prior art, the charging pile cable retracting device described in the present invention has the following beneficial effects:

[0031] The utility model provides a charging pile cable retracting device comprising: a housing, a cable reel, a cable and a coil spring;

[0032] The housing is hinged with a ratchet; the wire drum is arranged in the inner cavity of the housing, and the wire drum has a central shaft, which is rotatably connected to the housing, and the central shaft sleeve is provided with a shaft sleeve, and the central shaft can rotate around its own axis to drive the wire drum to rotate; the end of the central shaft is fixedly connected to a ratchet; the cable is wound on the wire drum; the coil spring is arranged in the inner cavity of the wire drum, and the coil spring is fixedly connected to the inner wall of the wire drum;

[0033] The pawl can swing between a first position and a second position, and the pawl can form a ratchet mechanism with the ratchet wheel;

[0034] When the pawl swings to the first position, the pawl disengages the ratchet wheel, allowing the cable drum to rotate in a first direction or a second direction; the first direction and the second direction are opposite to each other, and when the cable drum rotates in the first direction, it is used to wind and store the cable, and when the cable drum rotates in the second direction, it is used to extend the cable from the housing;

[0035] When the pawl is in the second position, the pawl locks the ratchet wheel from rotating, so that the wire drum cannot rotate in the first direction, thereby enabling the device to achieve self-locking when paying out the wire.

[0036] Therefore, the utility model is a device that enables people to automatically lock and retract the charging pile gun line when pulling it out through the charging pile cable retraction device when using the charging pile for charging, which plays a role of convenience and labor saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the specific implementation of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the specific implementation or the description of the prior art.

[0038] Figure 1 This is a schematic diagram of the overall structure of a cable retracting and releasing device of the present invention;

[0039] Figure 2 This is a schematic diagram of the specific structure of a cable retracting and releasing device of the present utility model;

[0040] Figure 3 This is a structural view of a ratchet mechanism of a cable retracting and releasing device of the present invention;

[0041] Figure 4 This is a partial enlarged view of the ratchet mechanism of a cable retracting and releasing device of the present invention;

[0042] Figure 5 This is a schematic diagram of the curved wheel groove structure at the bottom of a cable drum of a cable retracting and releasing device of the present invention;

[0043] Description of reference numerals:

[0044] 1-housing, 2-center axis, 3-cable, 4-wire clamp, 5-pawl, 6-track plate, 7-steel ball, 8-wire drum, 9-coil spring, 10-sheath, 11-sleeve, 101-mounting plate, 102-outer cover, 201-ratchet, 501-first position, 502-second position, 601-track plate groove, 801-curved wheel groove, 802-curved wheel track, 803-arc wheel track, 804-elliptical ring track, 805-outer ring. DETAILED DESCRIPTION

[0045] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the specific embodiments of the present invention.

[0047] like Figures 1 to 2As shown, an embodiment of the first aspect of the present invention provides a charging pile cable retracting device, comprising a housing 1, a cable drum 8, a cable 3, and a coil spring 9. The housing 1 is hinged with a pawl 5. The housing 1 is cylindrical and has a cavity therein that matches the outer diameter of the cable drum 8. The cable drum 8 is disposed within the internal cavity of the housing 1 and has a central shaft 2 that is rotatably connected to the housing 1. The central shaft 2 can rotate about its own axis to drive the cable drum 8 to rotate. The central shaft 2 is sleeved with a shaft sleeve 11, and an elastic circlip for the shaft is provided on the upper end of the central shaft 2 on the housing 1.

[0048] The end of the central shaft 2 is fixedly connected to a ratchet 201; the cable 3 is wound on the wire drum 8; the coil spring 9 is arranged in the inner cavity of the wire drum 8, one end of the coil spring 9 is fixedly connected to the inner wall of the wire drum 8, and the other end is fixedly connected to the shaft sleeve 11.

[0049] The housing 1 includes: a mounting plate 101 and an outer cover 102 . The mounting plate 101 is used to be mounted on a charging pile. The outer cover 102 has a receiving cavity for placing the cable reel 8 . The outer cover 102 is connected to the mounting plate 101 .

[0050] The outer cover 102 is provided with a wire hole for the cable 3 to pass through, and the wire hole is provided with a sheath 10 for contacting the outer surface of the cable 3 to reduce the friction generated when the cable 3 is retracted or extended.

[0051] Cable 3 is terminated with a clamp 4, which is fixedly connected to the charging pile gun line. Clamp 4 is provided with a ferrule, through which the charging pile gun line passes. This protects the charging pile gun line during use and extends its service life.

[0052] like Figures 3 and 4 As shown, it can be understood that the pawl 5 can swing between the first position 501 and the second position 502, and the pawl 5 can form a ratchet mechanism with the ratchet 201;

[0053] When the pawl 5 swings to the first position 501, the pawl 5 disengages from the ratchet 201, allowing the cable drum 8 to rotate in the first direction or the second direction; when the pawl 5 is in the second position 502, the pawl 5 locks the ratchet 201 from rotating, preventing the cable drum 8 from rotating in the first direction or the second direction;

[0054] The first direction and the second direction are opposite to each other. In this embodiment, the first direction is the direction in which the cable 3 is retracted when the cable drum 8 rotates, and the second direction is the direction in which the cable 3 is extended when the cable drum 8 rotates. Rotating the cable drum 8 in the first direction winds and stores the cable 3, while rotating the cable drum 8 in the second direction allows the cable 3 to be extended from the housing. When the pawl 5 is in the second position 502, it engages with the ratchet 5, locking the ratchet 201 from rotating. This prevents the cable drum 8 from rotating in the first direction, thereby preventing the cable 3 from becoming loose.

[0055] Combine Figure 2The bottom of the housing 1 is fixedly connected to a track plate 6 , and the track plate 6 has a groove 601 , in which a steel ball 7 is rollingly connected.

[0056] like Figure 5 As shown, a curved wheel groove 801 is provided at the bottom of the wire drum 8, wherein the curved wheel groove 801 of the wire drum 8 corresponds to the groove of the track plate 6, a part of the steel ball 7 is located in the curved wheel groove 801, and the outer surface of the steel ball 7 is rollingly connected to the curved wheel groove 801 to reduce friction and ensure smooth rotation of the wire drum 8.

[0057] The curved wheel groove 801 at the bottom of the bobbin 8 includes a curved wheel track 802 , an arc wheel track 803 , an elliptical ring track 804 , and an outer ring 805 .

[0058] The elliptical ring track 804 is centered on the central axis 2, one end of the curved wheel track 802 is connected to the elliptical ring track 804, and the other end of the curved wheel track 802 is connected to the outer ring 85, one end of the arc wheel track 803 is connected to the elliptical ring track 804, and the other end of the arc wheel track 803 is connected to the outer ring 805.

[0059] It can be understood that when the reel 8 rotates in the first direction, the steel ball 7 enters the elliptical ring 804 from the outer ring 805 in the curved wheel track 802 and rotates in the elliptical ring track 804 of the curved wheel groove 801;

[0060] When the bobbin 8 rotates in the second direction, the steel ball 7 enters the arc-shaped wheel track 803 from the elliptical ring track 804 , slides onto the outer ring 805 , and rotates within the outer ring 805 of the curved wheel groove 801 .

[0061] The movement of the steel ball 7 in the curved wheel groove 801 can keep the wire drum 8 stable during the process of winding and unwinding the wire.

[0062] When the cable 3 is recovered and the cable 3 is pulled along the second direction, the reset torsion spring of the pawl 5 causes the pawl 5 to disengage from the second position 502 on the ratchet 201, loosening the cable 3. The coil spring 9 releases the elastic force, causing the central axis 2 to rotate in the first direction, and the ratchet 201 pushes the pawl 5 to swing; at the same time, the wire drum 8 rotates, and the track plate 6 drives the steel ball 7 through the curved wheel track 802 into the elliptical ring track 804, and rotates in the elliptical ring track 804.

[0063] In summary, this utility model provides a safe, convenient, and labor-saving cable retraction device for charging piles. The ratchet mechanism automatically locks the cable. The curved wheel grooves, track grooves, and rolling mechanism of the steel balls reduce friction, enabling automatic cable retraction. This device addresses issues such as easy cable damage, failure to automatically lock after release, and potential safety hazards during charging.

[0064] The working principle of this utility model is:

[0065] When using a charging pile for charging, the charging pile gun line is pulled out together with the cable 3 on the wire hoop 4. When the cable 3 is pulled out of the housing 1, the pawl 5 swings between the first position 501 and the second position 502. The cable 3 drives the wire drum 8 and the central axis 2 to rotate. The winding spring 9 is in a tightened state. When the wire drum 8 rotates in the second direction, the track plate 6 drives the steel ball 7 from the elliptical ring track 804 into the arc wheel track 803 to slide onto the outer ring 805 and rotate inside the outer ring 805 of the curved wheel groove 801.

[0066] When the cable 3 is recovered and the cable 3 is pulled along the second direction, the reset torsion spring of the pawl 5 causes the pawl 5 to disengage from the second position 502 on the ratchet 201, loosening the cable 3. The coil spring 9 releases the elastic force, causing the central axis 2 to rotate in the first direction, and the ratchet 201 pushes the pawl 5 to swing; at the same time, the wire drum 8 rotates, and the track plate 6 drives the steel ball 7 through the curved wheel track 802 into the elliptical ring track 804, and rotates in the elliptical ring track 804.

[0067] The steel ball 7 can cooperate with the structure inside the curved wheel groove 81 so that the wire drum 8 can remain stable during the process of winding and releasing the wire, and realize the circular movement of the steel ball 7 inside the wire drum 8.

[0068] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A cable retracting device for a charging pile, characterized in that: The cable retracting device comprises: A housing (1), wherein the housing (1) is hingedly connected to a pawl (5); A wire drum (8), the wire drum (8) being arranged in the inner cavity of the housing (1), the wire drum (8) having a central shaft (2), the central shaft (2) being rotatably connected to the housing (1), the central shaft (2) being sleeved with a shaft sleeve (11), the central shaft (2) being rotatable around its own axis to drive the wire drum (8) to rotate; the end of the central shaft (2) being fixedly connected to a ratchet (201); a cable (3), the cable (3) being wound on the cable drum (8); A coil spring (9), the coil spring (9) being arranged in the inner cavity of the wire drum (8), and the coil spring (9) being fixedly connected to the inner wall of the wire drum (8); The pawl (5) is capable of swinging between a first position (501) and a second position (502), and the pawl (5) is capable of forming a ratchet mechanism with the ratchet (201); When the pawl (5) swings to the first position (501), the pawl (5) disengages from the ratchet (201), allowing the cable drum (8) to rotate in a first direction or a second direction; the first direction and the second direction are opposite to each other, and when the cable drum (8) rotates in the first direction, it is used to wind and store the cable (3), and when the cable drum (8) rotates in the second direction, it is used to extend the cable (3) from the housing; When the pawl (5) is in the second position (502), the pawl (5) locks the ratchet wheel (201) from rotating, so that the wire drum (8) cannot rotate in the first direction.

2. The cable retracting device according to claim 1, characterized in that: The bottom of the housing (1) is fixedly connected to a track plate (6), the track plate (6) has a groove (601), and a steel ball (7) is rollingly connected in the groove (601); The bottom of the wire drum (8) is provided with a curved wheel groove (801); The curved wheel groove (81) of the wire drum (8) corresponds to the groove of the track plate (6), a portion of the steel ball (7) is located in the curved wheel groove (801), and the outer surface of the steel ball (7) is rollingly connected to the curved wheel groove (801).

3. The cable retracting device according to claim 2, characterized in that: The curved wheel groove (801) of the wire drum (8) includes an outer ring (805), a curved wheel track (802), an arc wheel track (803), and an elliptical ring track (804); The elliptical ring track (804) is centered on the central axis (2); one end of the curved wheel track (802) is connected to the elliptical ring track (804); the other end of the curved wheel track (802) is connected to the outer ring (805); one end of the arc wheel track (803) is connected to the elliptical ring track (804); the other end of the arc wheel track (803) is connected to the outer ring (805); When the wire drum (8) rotates in a first direction, the steel ball rotates in the elliptical ring (804) of the curved wheel groove (801); When the wire drum rotates in the second direction, the steel ball rotates in the outer ring (805) of the curved wheel groove (801).

4. The cable retracting device according to claim 1, characterized in that: The pawl (5) is provided with a reset torsion spring, and the reset torsion spring is used to enable the pawl (5) to swing from the reset position to the reset position to the second position (502).

5. The cable retracting device according to claim 1, characterized in that: A wire hoop (4) is provided at the end of the cable (3), and a ring is provided on the wire hoop (4).

6. The cable retracting device according to claim 5, characterized in that: The wire clamp (4) is fixedly connected to the charging pile gun wire.

7. The cable retracting device according to claim 1, characterized in that: The upper end of the central shaft (2) is provided with a shaft elastic retaining ring on the housing (1).

8. The cable retracting device according to claim 1, characterized in that: The housing comprises: A mounting plate (101), the mounting plate (101) being used for mounting on a charging pile; An outer cover (102), wherein the outer cover (102) has an accommodating cavity for accommodating the wire reel, and the outer cover (102) is connected to the mounting plate (101).

9. The cable retracting device according to claim 8, characterized in that: The outer cover (102) is provided with a wire hole for the cable (3) to pass through, and the wire hole is provided with a sheath (10) for contacting the outer surface of the cable (3).

10. A charging pile, characterized in that: The cable retracting device comprises the cable retracting device according to any one of claims 1 to 9.

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