Cable take-up and pay-off structure

Abstract

The utility model relates to a cable take-up and pay-off structure, which relates to the technical field of winding reels, and comprises a reel hub, a servo motor, a wire arranging frame, a synchronous wheel, a synchronous belt and a driven shaft rod, the wire arranging frame is arranged in a machine shell of the charging pile in a sliding mode, the wire arranging frame is rotationally connected with a first roller and a second roller, and a wire passing hole is formed between the first roller and the second roller. The driven shaft rod is in transmission fit with the first roller, and one end of the first roller away from the driven shaft rod is in transmission fit with the second roller; the two ends of the first roller and the two ends of the second roller are fixedly connected with a first installation shaft and a second installation shaft respectively, adjusting holes are formed in the two sides of the wire arranging frame in a penetrating mode, the two installation shafts are arranged in the two adjusting holes in a sliding mode respectively, and elastic recovery pieces are arranged between the first installation shaft and the second installation shaft respectively. The cable winding and unwinding stability of the winding roll can be improved.

Description

Technical Field

[0001] The present application relates to the field of cable reel technology, and in particular to a cable reeling and winding structure. Background Art

[0002] Electric vehicles are created in response to energy shortages and environmental issues, and electric vehicle charging pile equipment is like a gas station, providing charging services. The charging pile is a power supply device installed outside the electric vehicle, connected to the AC power grid, and provides power for the on-board charging servo motor of the electric vehicle.

[0003] The electric cable reel is installed in the shell of the charging pile, and the charging gun connected to the cable is placed outside the shell of the charging pile. The common cable reel is mainly composed of a servo motor, a reel hub, etc. The frame is fixed to the internal structure of the charging pile shell, and the winding column of the reel hub is connected and installed in the casing of the charging pile through the installation shaft. The servo motor cooperates with the reel hub through a transmission mechanism such as a synchronous belt and a synchronous wheel. When the charging pile needs to be used, the user can control the servo motor to drive the reel hub to rotate through the control panel external to the charging pile, and the cable wound on the reel hub can be released.

[0004] In the prior art, in order to reduce the occurrence of cable entanglement and knotting during the process of retracting and releasing the cable, a reciprocatingly sliding cable arrangement block is often installed on the cable reel, and a cable hole for the cable to pass through is opened on the cable arrangement block.

[0005] However, as the cable is used for a longer period of time, the cable is prone to overheating, causing the radial cross-sectional area of ​​the cable to increase, and the size of the cable holes is fixed, which can easily cause the cable to get stuck and be unable to be recovered during the winding process. There is room for improvement. Utility Model Content

[0006] In order to reduce the thickness changes of the cable caused by thermal expansion and contraction, which may cause the cable reel to get stuck, and to improve the stability of the cable reel, the present application provides a cable reeling and winding structure.

[0007] The present application provides a cable retractable wire structure adopting the following technical solution:

[0008] A cable retracting and unwinding structure, comprising a reel hub, a servo motor, a cable rack, a synchronous wheel, a synchronous belt and a driven shaft, wherein the servo motor is fixedly connected to the inside of a housing of a charging pile, and the drive shaft of the servo motor is in transmission cooperation with the reel hub;

[0009] The reel hub and the synchronous wheel are both rotatably connected to the housing of the charging pile, the driven shaft is sleeved and fixed on the bearing of the synchronous wheel, and the synchronous belt is sleeved on the driving shaft of the servo motor and the synchronous wheel;

[0010] The wire rack is slidably disposed in the housing of the charging pile, and the wire rack is provided with an installation cavity, in which a first roller and a second roller are rotatably connected, and a wire passing hole is formed between the first roller and the second roller;

[0011] The wire rack is provided with an axial hole, the driven shaft passes through the axial hole and is in transmission cooperation with the first roller, and one end of the first roller away from the driven shaft is in transmission cooperation with the second roller;

[0012] The first and second mounting shafts are fixedly connected at both ends of the first roller and the second roller, respectively. Adjustment holes are penetrated through both sides of the wire rack. The two second mounting shafts are slidably arranged in the two adjustment holes, respectively. Elastic return parts are respectively arranged between the first and second mounting shafts.

[0013] By adopting the above technical solution, when the servo motor drives the reel hub to rotate in the direction of winding and releasing, the driving action of the servo motor's drive shaft can be transmitted through the synchronous belt, synchronous wheel, and driven shaft. Since the driven shaft cooperates with the first roller and the first roller cooperates with the second roller, the servo motor can simultaneously drive the first roller and the second roller to rotate in the same direction while driving the reel hub to rotate. The friction formed by the wheel surface of the first roller and the second roller and the cable can drive the cable to move, which can avoid the user from applying external force to automatically release and recycle the cable. When the cable is used for a long time and heats up, causing the radial area of ​​the cable to change, because the second roller slides on the cable rack, and elastic recovery parts are provided between the first installation shaft and the second installation shaft, the aperture of the wire hole formed between the first roller and the second roller can be increased or decreased accordingly, which can effectively reduce the occurrence of cable jams and effectively improve the smoothness of the cable reel to reel in and out. In addition, due to the setting of the elastic recovery member, it can be ensured that the wheel surfaces of the first roller and the second roller are always in contact with the two sides of the cable during the cable retraction and release process. At the same time, applying pressure to the first roller and the second roller can effectively increase the friction force that drives the cable to move, effectively reducing the occurrence of slippage during the cable retraction and release process.

[0014] Preferably, the two ends of the first roller are coaxially sleeved and respectively fixedly connected with the first transmission gear rings, the two ends of the second roller are coaxially sleeved and respectively fixedly connected with the second transmission gear rings, the adjacent first transmission gear rings are meshed with the second transmission gear rings, and the driven shaft is meshed with the two first transmission gear rings.

[0015] By adopting the above technical solution, the first transmission gear ring and the second transmission gear ring are matched and used with each other. When the servo motor drives the reel hub to rotate, the first roller and the second roller can be driven to rotate synchronously at the same time, so as to exert force on the cable to drive the cable to move.

[0016] Preferably, the elastic return member comprises a tension spring, and two ends of the tension spring are respectively fixedly connected to the first installation shaft and the second installation shaft.

[0017] By adopting the above technical solution, the extension or retraction of the tension spring can make the first roller and the second roller always fit on both sides of the cable, achieving the technical effect of automatically adjusting the aperture of the wire hole to adapt to the thickness of the cable.

[0018] Preferably, the ends of the first installation shaft and the second installation shaft are fixedly connected with an anti-slip portion, and the anti-slip portion is provided with a mounting ring groove for mounting the tension spring.

[0019] By adopting the above technical solution, the anti-dropping portion can reduce the occurrence of the first roller and the second roller dropping off from the cable rack.

[0020] Preferably, the adjustment hole is arranged in an arc shape.

[0021] By adopting the above technical solution, since the adjustment hole is arranged in an arc shape, the first transmission gear ring and the second transmission gear ring are always engaged during the movement of the second roller, thereby ensuring that the first roller and the second roller roll at the same time and ensuring the stability of the cable retracting and releasing.

[0022] Preferably, the first roller and the second roller are both arranged in an hourglass shape.

[0023] By adopting the above technical solution, since the first roller and the second roller are arranged in an hourglass shape, the wire hole formed between the first roller and the second roller can be elliptical, which can reduce the possibility of cable damage during the process of reeling and releasing the cable.

[0024] Preferably, the wheel surfaces of the first roller and the second roller are both provided with textures for increasing friction.

[0025] By adopting the above technical solution, the texture can increase the friction between the first roller, the second roller and the cable, and reduce the occurrence of slipping of the first roller and the second roller.

[0026] In summary, the cable retractable structure of the present application includes at least one of the following beneficial technical effects:

[0027] 1. Through the coordination and use of the reel hub, the cable rack, the synchronous wheel, the synchronous belt, the driven shaft, the first transmission gear ring, and the second transmission gear ring, the first roller and the second roller can be driven to rotate synchronously when the servo motor drives the reel hub to rotate. The rotation of the first roller and the second roller can drive the cable to slide in the direction of sliding out or into the cable hole, thereby achieving the technical effect of automatically retracting and releasing the cable;

[0028] 2. Through the setting of the adjustment hole and the tension spring, during the process of winding and releasing the cable on the cable reel, the tension spring pulls the first installation axis and the second installation axis, so that the first roller and the second roller are attached to both sides of the cable, thereby achieving the technical effect of automatically adjusting the aperture of the cable passing hole of the first roller and the second roller, so that the cable passing hole can be used to reel in and release cables of different thicknesses, effectively reducing the occurrence of cables getting stuck and unable to be released or recovered, and improving the stability of the cable reel. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of an embodiment of the present application for illustrating the overall structure of the reel hub.

[0030] Figure 2 It is a schematic diagram of an embodiment of the present application for illustrating the overall structure of a cable rack.

[0031] Explanation of the reference numerals in the accompanying drawings: 1. reel hub; 11. servo motor; 12. synchronous wheel; 13. driven shaft; 14. synchronous belt; 2. wire rack; 21. mounting cavity; 22. first roller; 221. first mounting shaft; 222. first transmission gear ring; 223. anti-slip portion; 224. mounting ring groove; 23. second roller; 231. second mounting shaft; 232. second transmission gear ring; 24. wire passing hole; 25. adjustment hole; 5. elastic recovery member. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-2 This application is described in further detail.

[0033] Example

[0034] The present application embodiment discloses a cable retractable wire structure. Figure 1 and Figure 2 , including a reel hub 1, a servo motor 11, a wire rack 2, a synchronous wheel 12, a synchronous belt 14 and a driven shaft 13. The servo motor 11 is fixedly connected to the inside of the casing of the charging pile, and the driving shaft of the servo motor 11 is in transmission cooperation with the reel hub 1.

[0035] The reel hub 1 and the synchronous wheel 12 are both rotatably connected to the housing of the charging pile, the driven shaft 13 is sleeved and fixed on the bearing of the synchronous wheel 12, and the synchronous belt 14 is sleeved on the driving shaft of the servo motor 11 and the synchronous wheel 12.

[0036] The wire rack 2 is slidably disposed in the housing of the charging pile. The wire rack 2 is provided with an installation cavity 21 , in which a first roller 22 and a second roller 23 are rotatably connected. A wire passing hole 24 is formed between the first roller 22 and the second roller 23 .

[0037] The wire rack 2 is provided with an axial hole, the driven shaft 13 passes through the axial hole and is in transmission cooperation with the first roller 22 , and the end of the first roller 22 away from the driven shaft 13 is in transmission cooperation with the second roller 23 .

[0038] The first and second rollers 22 and 23 are fixedly connected at both ends with a first mounting shaft 221 and a second mounting shaft 231 , respectively. Adjustment holes 25 are provided on both sides of the cable rack 2 , and the two mounting shafts are slidably disposed in the two adjustment holes 25 , respectively. Elastic return members 5 are provided between the first and second mounting shafts 221 and 231 , respectively.

[0039] When the servo motor 11 drives the reel hub 1 to rotate in the winding direction and the unwinding direction, the driving action of the driving shaft of the servo motor 11 can be transmitted through the synchronous belt 14, the synchronous wheel 12, and the driven shaft 13. Since the driven shaft 13 is in transmission cooperation with the first roller 22, and the first roller 22 is in transmission cooperation with the second roller 23, the servo motor 11 can simultaneously drive the first roller 22 and the second roller 23 to rotate in the same direction when driving the reel hub 1 to rotate. The friction force formed by the wheel surface of the first roller 22 and the second roller 23 and the cable can drive the cable to move, and the user can be free from applying external force to automatically release and recycle the cable.

[0040] When the cable is used for a long time and generates heat, causing the thickness of the cable to change, since the second roller 23 slides on the cable rack 2 and an elastic recovery member 5 is provided between the first mounting shaft 221 and the second mounting shaft 231, the aperture of the wire hole 24 formed between the first roller 22 and the second roller 23 can be increased or decreased accordingly, which can effectively reduce the occurrence of cable jams and effectively improve the smoothness of the cable reel when reeling in and out the cable.

[0041] In addition, due to the setting of the elastic recovery member 5, it can be ensured that the wheel surfaces of the first roller 22 and the second roller 23 are always in contact with the two sides of the cable during the cable retraction and release process. At the same time, applying pressure to the first roller 22 and the second roller 23 can effectively increase the friction force that drives the cable to move, thereby effectively reducing the occurrence of slippage during the cable retraction and release process.

[0042] Reference Figure 2 The two ends of the first roller 22 are coaxially sleeved and fixedly connected with the first transmission gear ring 222, and the two ends of the second roller 23 are coaxially sleeved and fixedly connected with the second transmission gear ring 232. The adjacent first transmission gear ring 222 is meshed with the second transmission gear ring, and the driven shaft is meshed with the two first transmission gear rings 222.

[0043] The first transmission gear ring 222 and the second transmission gear ring 232 are used in conjunction with each other. When the servo motor 11 drives the reel hub 1 to rotate, the first roller 22 and the second roller 23 can be driven to rotate synchronously at the same time to apply force to the cable to drive the cable to move.

[0044] In the embodiment of the present application, the elastic return member 5 includes a tension spring, and both ends of the tension spring are respectively fixedly connected to the first installation shaft 221 and the second installation shaft 231. In some other embodiments, a leaf spring may be used instead of the tension spring, which is not limited here.

[0045] The extension or retraction of the tension spring can make the first roller 22 and the second roller 23 always fit on both sides of the cable, so as to achieve the technical effect of automatically adjusting the aperture of the wire hole 24 to adapt to the thickness of the cable.

[0046] Referring to the figure, the ends of the first mounting shaft 221 and the second mounting shaft 231 are fixedly connected with an anti-detachment part 223, and an installation ring groove 224 for installing a tension spring is provided on the anti-detachment part 223. The anti-detachment part 223 can reduce the occurrence of the first roller 22 and the second roller 23 falling off from the wire rack 2.

[0047] Reference Figure 1 The adjustment hole 25 is arranged in an arc shape. Since the adjustment hole 25 is arranged in an arc shape, the first transmission gear ring and the second transmission gear ring are always engaged during the movement of the second roller 23, thereby ensuring that the first roller 22 and the second roller 23 roll at the same time, and ensuring the stability of the cable retracting and releasing.

[0048] Reference Figure 2 The first roller 22 and the second roller 23 are both arranged in an hourglass shape. Since the first roller 22 and the second roller 23 are arranged in an hourglass shape, the wire hole 24 formed between the first roller 22 and the second roller 23 can be elliptical, which can reduce the occurrence of cable damage during the process of retracting and releasing the cable.

[0049] Reference Figure 1 and Figure 2 The wheel surfaces of the first roller 22 and the second roller 23 are both provided with textures for increasing friction. The textures can increase the friction between the first roller 22, the second roller 23 and the cable, and reduce the occurrence of the first roller 22, the second roller 23 slipping.

[0050] The implementation principle of a cable winding and releasing structure in the embodiment of the present application is as follows: by matching and using the reel hub 1, the cable rack 2, the synchronous wheel 12, the synchronous belt 14, the driven shaft 13, the first transmission gear ring, and the second transmission gear ring, the first roller 22 and the second roller 23 can be driven to rotate synchronously during the process of the servo motor 11 driving the reel hub 1 to rotate. The rotation of the first roller 22 and the second roller 23 can drive the cable to slide in the direction of sliding out or sliding into the wire hole 24, so as to achieve the technical effect of automatically winding and releasing the cable; through the setting of the adjustment hole 25 and the tension spring, during the process of winding and releasing the cable reel, the tension spring pulls the first installation shaft 221 and the second installation shaft 231, so that the first roller 22 and the second roller 23 are attached to the two sides of the cable, so as to achieve the technical effect of automatically adjusting the aperture of the first roller 22 and the second roller 23 to the wire hole 24, so that the wire hole 24 is used for winding and releasing cables of different thicknesses, effectively reducing the occurrence of the cable being stuck and unable to be released or recovered, and improving the stability of the reel.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cable retractable structure, It is characterized in that It comprises a reel hub (1), a servo motor (11), a wire rack (2), a synchronous wheel (12), a synchronous belt (14) and a driven shaft (13), wherein the servo motor (11) is fixedly connected to the inside of a housing of a charging pile, and the drive shaft of the servo motor (11) is in driving cooperation with the reel hub (1); The reel hub (1) and the synchronous wheel (12) are both rotatably connected to the housing of the charging pile, the driven shaft (13) is sleeved and fixed on the bearing of the synchronous wheel (12), and the synchronous belt (14) is sleeved on the drive shaft of the servo motor (11) and the synchronous wheel (12); The wire rack (2) is slidably arranged in the housing of the charging pile, and the wire rack (2) is provided with an installation cavity (21), a first roller (22) and a second roller (23) are rotatably connected in the installation cavity (21), and a wire passing hole (24) is formed between the first roller (22) and the second roller (23); The wire rack (2) is provided with an axial hole, the driven shaft (13) passes through the axial hole and is in transmission cooperation with the first roller (22), and the end of the first roller (22) away from the driven shaft (13) is in transmission cooperation with the second roller (23); The first roller (22) and the second roller (23) are respectively fixedly connected at both ends with a first mounting shaft (221) and a second mounting shaft (231); adjustment holes (25) are provided on both sides of the cable rack (2); the two second mounting shafts (231) are respectively slidably arranged in the two adjustment holes (25); and elastic return members (5) are respectively provided between the first mounting shaft (221) and the second mounting shaft (231).

2. A cable retractable structure according to claim 1, It is characterized in that The two ends of the first roller (22) are coaxially sleeved and respectively fixedly connected with a first transmission gear ring (222), the two ends of the second roller (23) are coaxially sleeved and respectively fixedly connected with a second transmission gear ring (232), the adjacent first transmission gear rings (222) are meshed with the second transmission gear rings (232), and the driven shaft (13) is meshed with the two first transmission gear rings (222).

3. A cable retractable structure according to claim 2, It is characterized in that The elastic return member (5) comprises a tension spring, and two ends of the tension spring are respectively fixedly connected to the first installation shaft (221) and the second installation shaft (231).

4. A cable retractable structure according to claim 3, It is characterized in that The ends of the first installation shaft (221) and the second installation shaft (231) are both fixedly connected with an anti-slip portion (223), and the anti-slip portion (223) is provided with an installation ring groove (224) for installing the tension spring.

5. A cable retractable structure according to claim 2, It is characterized in that The adjustment hole (25) is arranged in an arc shape.

6. A cable retractable structure according to claim 1, It is characterized in that The first roller (22) and the second roller (23) are both arranged in an hourglass shape.

7. The cable retractable structure according to claim 1, It is characterized in that The wheel surfaces of the first roller (22) and the second roller (23) are both provided with textures for increasing friction.

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