Take-up device of electric vehicle charging pile

Abstract

The utility model relates to the technical field of electric automobile charging, in particular to a take-up device of an electric automobile charging pile, which comprises a charging head hung on the charging pile and a charging wire arranged on the charging head, a take-up box is arranged on the charging pile, a winding drum is rotatably arranged in the take-up box, one side of the charging wire is wound on the winding drum, and the other side of the charging wire is wound on the winding drum. A sleeve hole is formed in the bottom of the take-up box and sleeves the charging wire, a torsional spring is sleeved with the winding drum, the two sides of the torsional spring are installed on the winding drum and the take-up box respectively, a ratchet wheel is sleeved with one side of the winding drum, a pawl is obliquely arranged above the ratchet wheel, the top of the pawl is hinged to the take-up box, and the bottom of the pawl makes contact with the ratchet wheel; and an unlocking mechanism for pushing the pawl to rotate is arranged above the pawl. The utility model provides a take-up device of an electric automobile charging pile, which can protect a charging wire, quickly finish wire stretching and take-up operation, prevent the charging wire from being pulled in the charging process, and is used for overcoming the defects in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicle charging, in particular to a wire-receiving device for an electric vehicle charging pile. Background Art

[0002] The continuous increase in the number of cars has not only brought about traffic congestion, but also serious air pollution. The first thing to be affected by environmental problems is green travel. Electric vehicles were born in this context. Electric vehicles are mainly driven by electricity, which is different from traditional fuel and gas vehicles. They have incomparable advantages in energy conservation and environmental protection. Therefore, the relevant technical research of electric vehicles has received widespread attention. However, with the gradual increase in the number of electric vehicles, the demand for car charging is also increasing, which puts higher requirements on the construction of supporting charging facilities.

[0003] A charging pile is a device installed on the ground or wall to provide supplementary power services for cars that need charging. The function of a charging pile is similar to that of a gas pump in a gas station. Compared with a gas pump, a charging pile can be installed in public buildings, residential parking lots or charging stations, so charging piles can be used in a wider range of occasions. Charging piles are divided into vertical charging piles and hanging charging piles according to different installation methods. Since hanging charging piles require a wall as a carrier, for open-air charging stations, outdoor open-air parking lots and other places without walls, only vertical charging piles can be used. For this reason, vertical charging piles are mostly used for charging electric vehicles.

[0004] In order to facilitate charging, the charging head of the vertical charging pile is suspended on the casing of the vertical charging pile, which results in most of the charging cable being directly exposed outside the charging pile. However, the exposed part of the charging cable is placed irregularly outside the charging pile, which makes it easy for the charging cable to be run over by the car or interfere with the normal driving of the car, affecting the normal driving of the car. In addition, after the wheel runs over the charging cable, it will easily damage the charging cable, which is not conducive to the charging of the charging pile. At the same time, the bending part of the charging cable is also prone to leakage, causing loss of life safety and human property. To solve this problem, the solution adopted is to wrap the charging cable around the charging pile or reduce the length of the charging cable. To wrap the charging cable directly around the charging pile, the user needs to turn the charging cable around before and after using the charging pile, which is very troublesome for the user; to reduce the length of the charging cable, the distance between the charging pile and the electric car will be reduced. For drivers who find it difficult to control the distance, the electric car is easy to scratch the charging pile. For this reason, there are shortcomings in the current solutions, which requires the supporting charging facilities to have better solutions. Summary of the invention

[0005] In view of the deficiencies in the prior art, the utility model provides a wire-retracting device for an electric vehicle charging pile that can protect the charging wire, quickly complete wire extension and wire retraction operations, and prevent the charging wire from being pulled during the charging process, so as to overcome the defects in the prior art.

[0006] The technical solution adopted by the utility model is: a wire-receiving device for an electric vehicle charging pile, comprising a charging head suspended on the charging pile and a charging wire arranged on the charging head, a wire-receiving box is arranged on the charging pile, a reel is rotatably arranged in the wire-receiving box, one side of the charging wire is wound on the reel, a sleeve hole is opened at the bottom of the wire-receiving box, the sleeve hole is sleeved on the charging wire, a torsion spring is sleeved in the reel, two sides of the torsion spring are respectively installed on the reel and the wire-receiving box, a ratchet is sleeved on one side of the reel, a pawl is obliquely arranged above the ratchet, the top of the pawl is hinged on the wire-receiving box, the bottom of the pawl is in contact with the ratchet, and an unlocking mechanism for pushing the pawl to rotate is arranged above the pawl.

[0007] Preferably, the unlocking mechanism comprises a fixed block arranged on the top of the ratchet and an electric telescopic rod arranged above the fixed block, the electric telescopic rod is installed on the inner wall of the wire receiving box, and the telescopic direction of the electric telescopic rod is toward the fixed block.

[0008] Preferably, a first slot is provided on the telescopic end of the electric telescopic rod, a roller is mounted in the first slot, a side of the roller close to the fixed block passes through the first slot, and the roller is rotatably mounted on the telescopic end of the electric telescopic rod.

[0009] Preferably, the charging pile is provided with a plug socket, a socket is provided in the plug socket, one side of the charging head is plugged into the socket, a pressure sensor is provided in the socket, the pressure sensor is installed on the plug socket, and the pressure sensor is in contact with the charging head.

[0010] Preferably, a spring and a ring are arranged in sequence below the sleeve hole along the direction away from the wire taking-up box, the central axes of the sleeve hole, the spring and the ring are all located on the same axis, the two ends of the spring are respectively installed on the sleeve ring and the bottom plate of the wire taking-up box, the charging cable is movably sleeved in the sleeve ring, a fixing ring is arranged on the side of the sleeve away from the wire taking-up box, the fixing ring is installed on the charging cable, and the fixing ring is in contact with the sleeve ring.

[0011] Preferably, a spacer ring is mounted on the reel, and the spacer ring is located between the charging wire wound on the reel and the ratchet, and the inner hole diameter of the spacer ring matches the outer wall diameter of the reel.

[0012] The beneficial effects of the utility model are as follows: first, the utility model can wind and collect the charging line through the reel provided, so that before using the charging head to charge the electric vehicle, it is only necessary to pull the charging line out of the wire take-up box; and after charging is completed, the reel is driven to rotate under the action of the elastic potential energy stored in the torsion spring, so that the charging line extending out of the wire take-up box is put into the wire take-up box, and the charging line is protected, so that the wire extension and wire take-up operation can be completed quickly. Moreover, the utility model provides a ratchet and a pawl, so that after the operation of pulling the charging line, under the action of gravity, the bottom of the pawl is inserted into the tooth groove of the ratchet, so that the ratchet is stationary, that is, the reel is locked to prevent the charging line from being subjected to the tension of the torsion spring during the charging process, and the unlocking mechanism is provided to push the pawl to rotate, that is, the bottom of the pawl is pushed out from the tooth groove of the ratchet, so that the charging line extending out of the wire take-up box is automatically put into the wire take-up box under the action of the elastic potential energy stored in the torsion spring, so as to meet the need of wire take-up.

[0013] Secondly, the electric telescopic rod of the utility model can automatically perform the wire reeling operation, that is, by controlling the extension and retraction of the electric telescopic rod, the fixed block and the ratchet are pushed to rotate, so as to facilitate the bottom of the ratchet to be pushed out from the tooth groove of the ratchet wheel, so that the charging line extending out of the wire reel box is automatically retracted into the wire reel box under the action of the elastic potential energy stored in the torsion spring, and the roller is arranged on the electric telescopic rod to facilitate the pushing of the fixed block and the ratchet to rotate. In addition, the utility model can detect the information of the charging head being pulled out of the plug socket or inserted into the plug socket through the pressure sensor arranged on the plug socket. Therefore, when the charging head is detected to be inserted into the plug socket, the wire reeling operation can be automatically completed by controlling the electric telescopic rod, thereby simplifying the difficulty of retracting the charging line.

[0014] Thirdly, the utility model uses the fixed ring and the sleeve ring to constrain the charging wire stored in the wire box, so as to avoid too much charging wire being stored in the wire box. The spring is used to buffer the impact of the charging wire stored in the wire box, so as to avoid the charging wire and the wire box being damaged by the impact. In addition, the utility model uses the spacer ring to prevent the charging wire from contacting the ratchet, thereby improving the stability of the charging wire storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the utility model installed on a charging pile.

[0016] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0017] Figure 3 It is a half-section schematic diagram of the wire take-up box in the utility model.

[0018] Figure 4 This is a schematic diagram of the assembly of the charging cable, reel and electric telescopic rod.

[0019] Figure 5 for Figure 4 Magnified view at B.

[0020] Figure 6 It is a schematic diagram of the assembly of the charging head and the plug socket in the utility model. DETAILED DESCRIPTION

[0021] like Figures 1 to 6 As shown, a wire-retracting device for an electric vehicle charging pile comprises a charging head 2 suspended on the charging pile 1 and a charging wire 3 arranged on the charging head 2, a wire-retracting box 4 is arranged on the charging pile 1, a reel 5 is rotatably arranged in the reel box 4, one side of the charging wire 3 is wound on the reel 5, a sleeve hole 6 is opened at the bottom of the reel box 4, the sleeve hole 6 is sleeved on the charging wire 3, a torsion spring 7 is sleeved in the reel 5, and the two sides of the torsion spring 7 are respectively installed on the reel 5 and the reel box 4, a ratchet 8 is sleeved on one side of the reel 5, a pawl 9 is obliquely arranged above the ratchet 8, the top of the pawl 9 is hinged on the reel box 4, the bottom of the pawl 9 is in contact with the ratchet 8, and an unlocking mechanism for pushing the pawl 9 to rotate is arranged above the pawl 9. Before using the charging head 2 to charge the electric vehicle, it is necessary to pull the charging line 3 out of the wire box 4 so that the charging head 2 can be connected to the electric vehicle. The charging line 3 extending out of the wire box 4 drives the reel 5 and the ratchet 8 to rotate, causing the torsion spring 7 to twist and deform, and at the same time, the pawl 9 slides on the back of the teeth of the ratchet 8, so that the torsion spring 7 stores elastic potential energy; after completing the operation of pulling the charging line 3, under the action of gravity, the bottom of the pawl 9 is inserted into the tooth groove of the ratchet 8, so that the ratchet 8 is stationary, that is, the reel 5 is locked to prevent the charging line 3 from being subjected to the tension of the torsion spring 7 during the charging process. The unlocking mechanism is a mechanism that can push the bottom of the pawl 9 out of the tooth groove of the ratchet 8, thereby releasing the lock of the reel 5, that is, under the action of the elastic potential energy stored in the torsion spring 7, the reel 5 is driven to rotate, so that the charging line 3 extending out of the wire box 4 is retracted into the wire box 4, and the wire reeling operation can be completed.

[0022] In this embodiment, the unlocking mechanism includes a fixed block 10 arranged on the top of the pawl 9 and an electric telescopic rod 11 arranged above the fixed block 10. The electric telescopic rod 11 is installed on the inner wall of the wire collection box 4. The telescopic direction of the electric telescopic rod 11 is toward the fixed block 10. The electric telescopic rod 11 is connected to the central control component of the charging pile 1. The extension of the electric telescopic rod 11 is controlled by the central control component of the charging pile 1, thereby pushing the fixed block 10 and the pawl 9 to rotate, thereby facilitating the bottom of the pawl 9 to be pushed out of the tooth groove of the ratchet 8.

[0023] Specifically, a first groove 12 is provided on the telescopic end of the electric telescopic rod 11, and a roller 13 is sleeved in the first groove 12. The roller 13 passes through the first groove 12 on the side close to the fixed block 10. The roller 13 is rotatably installed on the telescopic end of the electric telescopic rod 11. A pin is movably sleeved in the roller 13, and the pin is installed on the telescopic end of the electric telescopic rod 11. The roller 13 is rollingly connected to the telescopic end of the electric telescopic rod 11 through the pin, thereby facilitating the pushing of the fixed block 10 and the pawl 9 to rotate.

[0024] Please refer again Figure 6 The charging pile 1 is provided with a plug socket 14, a socket 15 is provided in the plug socket 14, one side of the charging head 2 is plugged into the socket 15, a pressure sensor 16 is provided in the socket 15, the pressure sensor 16 is installed on the plug socket 14, the pressure sensor 16 is in contact with the charging head 2, and the pressure sensor 16 is connected to the central control component of the charging pile 1. By plugging one side of the charging head 2 into the socket 15, the pressure sensor 16 is squeezed by the charging head 2, thereby moving toward the central control component of the charging pile 1. The pressure sensor 16 is compressed and reduced, thereby transmitting a pressure-reducing signal to the central control component of the charging pile 1, so that the central control component of the charging pile 1 determines whether the charging head 2 is pulled out of the plug socket 14 or inserted into the plug socket 14. According to the information that the charging head 2 is inserted into the plug socket 14, the electric telescopic rod 11 can be automatically controlled to extend, thereby automatically controlling the charging line 3 extending out of the wire box 4 to be retracted into the wire box 4, so as to simplify the difficulty of retracting the charging line 3.

[0025] In this embodiment, a spring 17 and a ring 18 are sequentially arranged below the sleeve hole 6 in a direction away from the wire taking-up box 4. The central axes of the sleeve hole 6, the spring 17 and the ring 18 are all located on the same axis. The two ends of the spring 17 are respectively mounted on the ring 18 and the bottom plate of the wire taking-up box 4. The charging line 3 is movably sleeved in the ring 18. A fixing ring 19 is arranged on the side of the ring 18 away from the wire taking-up box 4. The fixing ring 19 is mounted on the charging line 3. The fixing ring 19 contacts the ring 18, thereby constraining the charging line 3 received in the wire taking-up box 4 to avoid too much charging line 3 being received in the wire taking-up box 4. At the same time, the spring 17 is arranged to buffer the impact force of the charging line 3 received in the wire taking-up box 4 to avoid the charging line 3 and the wire taking-up box 4 being damaged by the impact.

[0026] Please refer again Figure 3The reel 5 is provided with a spacer ring 20, which is located between the charging wire 3 wound on the reel 5 and the ratchet 8. The inner hole diameter of the spacer ring 20 matches the outer wall diameter of the reel 5. The spacer ring 20 is installed on the reel 5 to prevent the charging wire 3 from contacting the ratchet 8. It should be pointed out that the two ends of the reel 5 are respectively provided with rollers, which are installed in the wire take-up box 4. The rollers are provided with bearings, and the two sides of the bearings are respectively connected to the reel 5 and the rollers. The torsion spring 7 is located on the roller, and one side of the torsion spring 7 is connected to the roller, so as to facilitate the rotational connection between the reel 5 and the storage box, and the connection between the torsion spring 7 and the wire take-up box 4.

[0027] The method of using this product is as follows: Figures 1 to 6 As shown, the use of this product is divided into two parts. The first part is to plug the charging head 2 into the electric car for charging, and the second part is to plug the charging head back into the charging pile 1.

[0028] When the charging head 2 is plugged into the electric vehicle for charging, the charging head 2 is unplugged from the plug socket 14, and the charging head 2 and the charging line 3 are pulled so that the charging line 3 in the wire taking-up box 4 extends out from the sleeve hole 6. The charging line 3 extending out of the wire taking-up box 4 drives the reel 5 and the ratchet 8 to rotate, so that the torsion spring 7 is twisted and deformed, and at the same time, the pawl 9 slides on the back of the teeth of the ratchet 8, so that the torsion spring 7 stores elastic potential energy, thereby facilitating the charging head 2 to be plugged into the charging port of the electric vehicle; when the charging head 2 is plugged into the charging port of the electric vehicle, under the action of gravity, the bottom of the pawl 9 is inserted into the tooth groove of the ratchet 8, so that the ratchet 8 is stationary, that is, the reel 5 is locked to prevent the charging line 3 from being subjected to the tension of the torsion spring 7 during the charging process.

[0029] When the charging drag is plugged back into the charging pile 1, the charging head 2 is first unplugged from the charging port of the electric vehicle, and then the charging head 2 is plugged back into the plug socket 14, so that the pressure sensor 16 is squeezed, thereby transmitting a squeezing signal to the central control component of the charging pile 1, and then operating the electric telescopic rod 11 to extend, pushing the fixed block 10 and the pawl 9 to rotate, so that the bottom of the pawl 9 is pushed out from the tooth groove of the ratchet 8, and with the help of the torsion spring 7 storing elastic potential energy, the reel 5 is driven to rotate, so that the charging line 3 extending out of the take-up box 4 is taken into the take-up box 4; then, the electric telescopic rod 11 is controlled to reset to meet the need of reuse.

[0030] Through this embodiment, the charging line 3 can be wound and collected by the reel 5, so that before using the charging head 2 to charge the electric vehicle, it is only necessary to pull the charging line 3 out of the wire box 4; and after charging is completed, the reel 5 is driven to rotate under the action of the elastic potential energy stored in the torsion spring 7, so that the charging line 3 extending out of the wire box 4 is put into the wire box 4, and the charging line 3 is protected, so that the wire extension and wire reel operation can be completed quickly. In addition, the utility model provides a ratchet and a pawl, so that after the operation of pulling the charging line 3, under the action of gravity, the bottom of the pawl 9 is inserted into the tooth groove of the ratchet 8, so that the ratchet 8 is stationary, that is, the reel 5 is locked to prevent the charging line 3 from being subjected to the tension of the torsion spring 7 during the charging process, and the unlocking mechanism is provided to push the pawl 9 to rotate, that is, the bottom of the pawl 9 is pushed out from the tooth groove of the ratchet 8, so that the charging line 3 extending out of the wire box 4 is automatically retracted into the wire box 4 under the action of the elastic potential energy stored in the torsion spring 7 to meet the need of wire reeling.

[0031] The embodiments described above are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent scope of the present invention should be included in the patent application scope of the present invention.

Claims

1. A wire collection device for an electric vehicle charging pile, comprising a charging head (2) suspended on the charging pile (1) and a charging wire (3) arranged on the charging head (2), characterized in that: The charging pile (1) is provided with a wire take-up box (4), a reel (5) is rotatably provided in the wire take-up box (4), one side of the charging line (3) is wound around the reel (5), a sleeve hole (6) is provided at the bottom of the wire take-up box (4), the sleeve hole (6) is sleeved on the charging line (3), a torsion spring (7) is sleeved in the reel (5), the two sides of the torsion spring (7) are respectively installed on the reel (5) and the wire take-up box (4), one side of the reel (5) is sleeved with a ratchet (8), a pawl (9) is obliquely provided above the ratchet (8), the top of the pawl (9) is hinged on the wire take-up box (4), the bottom of the pawl (9) is in contact with the ratchet (8), and an unlocking mechanism for driving the pawl (9) to rotate is provided above the ratchet (9).

2. The wire collection device for an electric vehicle charging pile according to claim 1, characterized in that: The unlocking mechanism comprises a fixed block (10) arranged on the top of the ratchet (9) and an electric telescopic rod (11) arranged above the fixed block (10); the electric telescopic rod (11) is mounted on the inner wall of the wire collection box (4); and the telescopic direction of the electric telescopic rod (11) is toward the fixed block (10).

3. The wire collection device for an electric vehicle charging pile according to claim 2, characterized in that: A first slot (12) is provided on the telescopic end of the electric telescopic rod (11), a roller (13) is sleeved in the first slot (12), a side of the roller (13) close to the fixed block (10) passes through the first slot (12), and the roller (13) is rotatably mounted on the telescopic end of the electric telescopic rod (11).

4. The wire collection device for an electric vehicle charging pile according to claim 1, characterized in that: The charging pile (1) is provided with a plug socket (14), a socket (15) is provided in the plug socket (14), one side of the charging head (2) is plugged into the socket (15), a pressure sensor (16) is provided in the socket (15), the pressure sensor (16) is mounted on the plug socket (14), and the pressure sensor (16) is in contact with the charging head (2).

5. The wire collection device for an electric vehicle charging pile according to claim 1, characterized in that: A spring (17) and a collar (18) are sequentially arranged below the sleeve hole (6) in a direction away from the wire collection box (4); the central axes of the sleeve hole (6), the spring (17) and the collar (18) are all located on the same axis; two ends of the spring (17) are respectively mounted on the collar (18) and the bottom plate of the wire collection box (4); the charging cable (3) is movably sleeved in the collar (18); a fixing ring (19) is arranged on a side of the collar (18) away from the wire collection box (4); the fixing ring (19) is mounted on the charging cable (3); and the fixing ring (19) is in contact with the collar (18).

6. The wire collection device for an electric vehicle charging pile according to claim 1, characterized in that: The reel (5) is provided with a spacer ring (20), the spacer ring (20) is located between the charging wire (3) wound on the reel (5) and the ratchet (8), and the inner hole diameter of the spacer ring (20) matches the outer wall diameter of the reel (5).

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