Charging cable take-up unit

Abstract

The invention provides a charging cable take-up unit, and relates to the technical field of charging cable take-up. A rotating disc is arranged in a take-up box, the rotating disc and the lower end face of the take-up box are arranged at intervals and rotationally connected, the periphery of the rotating disc is connected with a rotating cylinder, a spring is arranged between the rotating disc and the lower end face of the take-up box to provide return torque for the rotating disc, and a part of a charging cable is wound on the outer side surface of the rotating cylinder to form a first roll; the other part of the charging cable passes through the turntable and is wound on the upper surface of the turntable to form a second roll. According to the take-up unit, the charging cable can be divided into the inner coil and the outer coil to be wound in the take-up box, the space utilization rate of the take-up unit is improved, the take-up box with the smaller size can be designed under the condition that the charging cable with the same length is wound, and therefore the space occupied by the take-up unit can be reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of charging cable storage, and more specifically, relates to a charging cable take-up unit. Background Art

[0002] The charging cable is an essential component for charging electric vehicles. It includes a connecting cable and two connectors at both ends of the connecting cable. The fixed pins of the vehicle can be connected to the fixed socket of the charging station to charge the electric vehicle. In order to avoid the cable being exposed to the outside and occupying space and being easily damaged after charging, a wire-reeling unit is usually equipped. For example, the prior art CN 118238649A discloses an automatic winding assembly for charging pile charging cables. The automatic winding assembly is fixedly connected to a winding frame near each other, and the winding frame has a wire wound on the outside. The automatic winding assembly includes a protective cylinder fixed on both sides of the storage frame, and the inner cavity of the protective cylinder is rotatably connected to a transmission shaft, and the transmission shaft is fixedly connected to the winding frame at one end away from the protective cylinder. The transmission shaft is located at one end of the inner cavity of the protective cylinder and is fixedly connected to a fixed disk, and a torsion spring is fixedly connected to one side of the fixed disk, and the torsion spring is fixedly connected to the protective cylinder at the side away from the fixed disk. However, due to the large diameter of the charging cable, the charging cable is wound on the outside of the winding frame and occupies a large space. Summary of the invention

[0003] An object of the present invention is to provide a charging cable take-up unit, which can improve the space utilization of the take-up unit and thus reduce the space occupied by the take-up unit.

[0004] To achieve the above-mentioned objectives, the present invention provides a charging cable take-up unit, comprising a take-up box and a charging cable wound in the take-up box; a turntable is arranged in the take-up box, and the turntable is spaced apart and rotatably connected to the lower end surface of the take-up box; the outer periphery of the turntable is connected to a rotating drum, a first opening is provided on the rotating drum, and a second opening is provided on the upper end surface of the take-up box, and a spring is provided between the turntable and the lower end surface of the take-up box to provide a restoring torque to the turntable; one end of the charging cable extends from the side of the take-up box and is connected to a first connector, a part of the charging cable is wound on the outer surface of the drum to form a first roll, another part of the charging cable passes through the first opening of the turntable and is wound on the upper surface of the turntable to form a second roll, and the other end of the charging cable is connected to a second connector.

[0005] Furthermore, the wire take-up box is formed by axially assembling and connecting a first shell and a second shell.

[0006] Furthermore, a connecting column is provided at a middle position of the lower end surface of the wire take-up box, and the turntable is rotatably connected to the connecting column via a pin shaft.

[0007] Furthermore, an inner cylinder is provided on the bottom surface of the turntable, and the spring is a coil spring, which is sleeved on the connecting column and has an inner end connected to the connecting column and an outer end connected to the inner cylinder.

[0008] Furthermore, the turntable is a circular disc, and the rotating cylinder and the inner cylinder are cylindrical.

[0009] Furthermore, a support plate is provided below the coil spring to provide support force for positioning the coil spring.

[0010] Furthermore, the area of ​​the second opening is close to the upper end surface of the wire receiving box.

[0011] Furthermore, a fixing piece is disposed on the upper surface of the turntable, and the fixing piece is configured to fix the second connector connected to the second roll.

[0012] Furthermore, the outer surface of the rotating drum has a groove for receiving at least a portion of the charging cable.

[0013] Furthermore, a ratchet is arranged on the outer circumferential surface of the inner cylinder, a pawl is arranged in the wire take-up box, and the ratchet and the pawl are matched to form a ratchet mechanism.

[0014] The beneficial effects brought about by the technical solution adopted by the present invention are: (1) The present invention provides a turntable in a take-up box, the turntable is spaced apart from and rotatably connected to the lower end surface of the take-up box, the outer periphery of the turntable is connected to a rotating drum, a spring is provided between the turntable and the lower end surface of the take-up box to provide a restoring torque to the turntable, a portion of the charging cable is wound on the outer surface of the rotating drum to form a first roll, and another portion of the charging cable passes through the turntable and is wound on the upper surface of the turntable to form a second roll; the take-up unit enables the charging cable to be divided into inner and outer rolls and wound in the take-up box, thereby improving the space utilization of the take-up unit. When the charging cable of the same length is wound, a smaller take-up box can be designed, thereby reducing the space occupied by the take-up unit.

[0015] (2) The present invention provides a ratchet on the outer circumferential surface of the inner cylinder and a pawl in the take-up box. The ratchet and the pawl are matched to form a ratchet mechanism. The turntable rotates only in one direction of pulling out the cable and is prevented from rotating in the opposite direction, thereby resisting the spring return torque, thereby allowing the cable to be unfolded with less effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A cross-sectional view of a charging cable take-up unit provided in an embodiment of the present invention; Figure 2 A top view of a charging cable take-up unit provided in an embodiment of the present invention; Figure 3A top view of the internal structure of a charging cable take-up unit provided in an embodiment of the present invention; Figure 4 A bottom view of a charging cable take-up unit provided in an embodiment of the present invention; Figure 5 A bottom view of the internal structure of a charging cable take-up unit provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and effect of the present invention more clearly understood, the embodiments of the present invention will now be further described in conjunction with the accompanying drawings.

[0018] refer to Figure 1-5 The charging cable take-up unit 10 of the present invention includes a take-up box 11 and a charging cable 17 wound up in the take-up box 11. The take-up box 11 is composed of a first shell 12 and a second shell 13 assembled and connected in the axial direction, for example, by screws or snap connections. A turntable 14 is arranged in the take-up box 11, and the turntable 14 is spaced apart from and rotatably connected to the lower end surface of the take-up box 11. Specifically, a connecting column 21 is arranged in the middle of the lower end surface of the take-up box 11, and the turntable 14 is rotatably connected to the connecting column 21 through a pin. The turntable 14 constitutes a supporting structure for a cable 17 that is wound up to form a first roll 18 and a second roll 19. The turntable 14 is a circular disk, and a cylindrical rotating drum 14a is connected to the outer periphery of the turntable 14. The outer surface 24 of the rotating drum 14a and the take-up box 11 enclose a first accommodation space, and the first roll 18 is accommodated in the first accommodation space. The rotating disk 14 and the upper end surface of the take-up box 11 form a second accommodating space, and the second roll 19 is accommodated in the second accommodating space.

[0019] The first roll 18 is wound on the outer side surface 24 of the drum 14a, and the outer end of the first roll 18 has a first connector 31 connected to the vehicle and / or the charging station. The second roll 19 is wound on the turntable 14, in particular, on the upper surface 34 of the turntable 14, and the outer end of the second roll 19 has a second connector 32 connected to the vehicle and / or the charging station. The drum 14a includes a first opening, which allows the cable 17 to pass through the drum 14a and enter the second accommodation space from the first accommodation space. A portion of the cable 17 located in the first accommodation space and wound on the outer side surface 24 of the drum 14a forms the first roll 18, and a portion of the cable 17 located in the second accommodation space and wound on the upper surface 34 of the turntable 14 forms the second roll 19.

[0020] In addition, a spring 16 is provided between the turntable 14 and the lower end surface of the take-up box 11, and the spring 16 is connected to the turntable 14 and the take-up box 11 to provide a restoring torque to the turntable 14. Specifically, a cylindrical inner cylinder 14b is provided on the bottom surface of the turntable 14, and the spring 16 is a coil spring, which is sleeved on the connecting column 21 and the inner end is connected to the connecting column 21, and the outer end is connected to the inner cylinder 14b. After the cable 17 is released after charging, the turntable 14 is driven to rotate under the restoring torque of the coil spring to automatically rewind the first roll 18 and retract it on the turntable 14a. In a preferred embodiment, a support disk 15 is provided below the coil spring to provide a supporting force for positioning the coil spring, and the support disk 15 is sleeved on the connecting column 21 and abuts against the step surface on the connecting column 21 to prevent the support disk 15 from moving downward along the axial direction of the connecting column 21.

[0021] In a preferred embodiment, a second opening 61 having an area close to that of the turntable 14 is provided on the upper end surface of the wire taking-up box 11, so that the operator can reach into the second accommodating space from the second opening 61 to pull out the second roll 19 and rewind the second roll 19 after charging. For example, the area of ​​the second opening 61 is 90-95% of the area of ​​the upper end surface of the wire taking-up box 11.

[0022] In a preferred embodiment, the second roll 19 is coiled close to the inner surface 54 of the drum 14a, so as to have the largest coiling diameter, and the smallest volume can be used to coil the same length of cable.

[0023] In a preferred embodiment, the upper surface 34 of the turntable 14 is provided with fixing members 35 , such as two cards, configured to fix the second connector 32 connected to the second roll 19 .

[0024] In a preferred embodiment, the outer surface 24 of the drum 14a has a groove for receiving the cable 17 so as to guide the cable of the first roll 18 to be wound on the drum 14a.

[0025] One end of the cable 17 extends from the side 44 of the wire take-up box 11 and is connected to the first connector 31. The cable 17 is wound on the outer surface 24 of the drum 14a in the first accommodating space to form a first roll 18, and then passes through the first opening of the turntable 14 to enter the second accommodating space, and is wound on the upper surface 34 of the turntable 14 along the inner surface 54 of the drum 14a to form a second roll 19. The other end of the cable 17 is connected to the second connector 32.

[0026] In a preferred embodiment, a sawtooth groove is provided on the outer circumference of the inner cylinder 14b to form a ratchet, and a pawl 51 is provided in the take-up box 11. The ratchet and the pawl 51 are paired to form a ratchet mechanism. The ratchet mechanism allows the turntable 14 to rotate in a direction to pull out the cable 17, and prevents rotation in the opposite direction, which plays a role in resisting the return torque of the spring 16, so that the first roll 18 of the cable can be unrolled with little effort to achieve the appropriate length for connecting the vehicle to the charging socket. After charging, the ratchet mechanism can be released to facilitate the automatic winding of the cable 17 under the action of the return torque of the spring 16. Specifically, a sliding rod is provided in the take-up box 11 along the up and down directions, and the pawl 51 is provided on the sliding rod and can slide along it. The lower end surface of the take-up box 11 is provided with an opening to facilitate the operator to extend the sliding pawl 51 to release the ratchet.

[0027] The working principle of the charging cable take-up unit 10 according to the present invention is as follows: the operator unlocks the cable of the second roll 19 from the fixing member 35 and pulls it out from the second opening 61, and then applies force to the cable of the first roll 18 and the first connector 31 connected to the first roll 18, thereby unrolling the cable 17 to the outside of the take-up box 11 until the cable 17 reaches an appropriate length, and inserts the first connector 31 into the vehicle socket. Unrolling the cable of the first roll 18 to the outside of the take-up box 11 causes the turntable 14 to rotate, thereby compressing the spring 16, and once the operator stops applying the force to unroll the cable of the first roll 18, the pawl 51 locks the rotation of the turntable 14, preventing the spring 16 from applying a force opposite to the unrolling. After charging is completed, the first connector 31 and the second connector 32 are disconnected from the vehicle and the charging station, the pawl 51 is released, and the restoring torque of the spring 16 drives the turntable 14 to rotate, and the cable of the first roll 18 is rewound into the take-up box 11, while the cable of the second roll 19 is manually wound around the upper surface 34 of the turntable 14 and the inner surface 54 of the drum 14a by the operator, and the second connector 32 is fixed by the fixing member 35.

[0028] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A charging cable take-up unit, comprising a take-up box and a charging cable wound in the take-up box; characterized in that: A turntable is provided in the wire taking-up box, and the turntable is spaced apart and rotatably connected to the lower end surface of the wire taking-up box; the outer periphery of the turntable is connected to a rotating drum, a first opening is provided on the rotating drum, and a second opening is provided on the upper end surface of the wire taking-up box, and a spring is provided between the turntable and the lower end surface of the wire taking-up box to provide a restoring torque to the turntable; one end of the charging cable extends from the side of the wire taking-up box and is connected to the first connector, a part of the charging cable is wound on the outer surface of the rotating drum to form a first roll, another part of the charging cable passes through the first opening of the turntable and is wound on the upper surface of the turntable to form a second roll, and the other end of the charging cable is connected to the second connector.

2. The charging cable take-up unit according to claim 1, characterized in that: The wire take-up box is formed by assembling and connecting a first shell and a second shell in the axial direction.

3. The charging cable take-up unit according to claim 1, characterized in that: A connecting column is arranged at the middle position of the lower end surface of the wire take-up box, and the rotating disk is rotatably connected to the connecting column via a pin shaft.

4. The charging cable take-up unit according to claim 3, characterized in that: An inner cylinder is arranged on the bottom surface of the rotating disk. The spring is a coil spring, which is sleeved on the connecting column and has an inner end connected to the connecting column and an outer end connected to the inner cylinder.

5. The charging cable take-up unit according to claim 4, characterized in that: The rotating disk is a circular disk, and the rotating cylinder and the inner cylinder are cylindrical.

6. The charging cable take-up unit according to claim 4, characterized in that: A support plate is arranged below the coil spring to provide support force for positioning the coil spring.

7. The charging cable take-up unit according to claim 1, characterized in that: The area of ​​the second opening is close to the upper end surface of the wire receiving box.

8. The charging cable take-up unit according to claim 1, characterized in that: A fixing member is disposed on an upper surface of the turntable, and the fixing member is configured to fix the second connector connected to the second roll.

9. The charging cable take-up unit according to claim 1, characterized in that: The outer surface of the drum has a groove for receiving at least a portion of the charging cable.

10. The charging cable take-up unit according to claim 4, characterized in that: A ratchet is arranged on the outer circumferential surface of the inner cylinder, a pawl is arranged in the wire take-up box, and the ratchet and the pawl are matched to form a ratchet mechanism.

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