Charging pile cable protection device and charging pile

Abstract

The utility model relates to the technical field of charging piles, in particular to a charging pile cable protection device and a charging pile, and aims to alleviate the technical problem of damage and even electric leakage caused by friction between a cable and the ground in the prior art. The charging pile cable protection device comprises a fixed seat, a winding reel, a sliding sleeve, a guide column and a first compression spring, the winding reel is rotationally connected with the fixed seat; the sliding sleeve is located in the winding reel and is in threaded fit with the winding reel. The guide column is fixed to the fixing base and penetrates through the sliding sleeve in the axial direction of the sliding sleeve so as to limit the sliding sleeve to rotate around the axis of the sliding sleeve. One end of the first compression spring is connected with the guide column, and the other end of the first compression spring is connected to the sliding sleeve. The charging pile comprises the charging pile cable protection device. According to the cable protection device for the charging pile, the cable is released and wound by switching between rotary motion and linear motion, friction between the cable and the ground is avoided, and therefore the cable is protected.

Description

Technical Field

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

[0002] After an electric vehicle is fully charged, the cable connected to the charging gun is usually randomly piled on the ground. When it is used again, due to the dragging of the user, the cable will rub against the ground, resulting in damage. Over time, the cable is prone to leakage. Content of the Utility Model

[0003] The purpose of the utility model is to provide a charging pile cable protection device and a charging pile to alleviate the technical problem that the cable is damaged or even leaks due to friction with the ground in the related art.

[0004] In order to solve the above technical problems, the technical solution provided by the utility model is as follows:

[0005] In a first aspect, the utility model provides a charging pile cable protection device, including: a fixed seat, a wire reel, a sliding sleeve, a guide post and a first compression spring;

[0006] The wire reel is used for winding the cable and is rotatably connected to the fixed seat to rotate around its own axis;

[0007] The sliding sleeve is located inside the wire reel, is coaxially arranged with the wire reel, and its side wall is in threaded cooperation with the inner wall of the wire reel;

[0008] The guide post is fixed to the fixed seat and axially penetrates through the sliding sleeve along the sliding sleeve to limit the sliding sleeve from rotating around its own axis;

[0009] The first compression spring is sleeved on the guide post, one end of which is connected to the guide post, and the other end is connected to the sliding sleeve.

[0010] Further, the fixed seat includes an upper seat and a lower seat, and the upper seat and the lower seat are spaced apart;

[0011] One end of the wire reel is rotatably matched with the upper seat, and the other end is rotatably matched with the lower seat;

[0012] The charging pile cable protection device further includes an electric slip ring, the rotor part of which is fixed to the wire reel, and the stator part is fixed to the lower seat;

[0013] The rotor part is used for electrically connecting to one end of the cable far from the charging gun, and the stator part is used for electrically connecting to the power supply.

[0014] Further, a protective shell is fixedly connected between the upper seat and the lower seat;

[0015] The protective shell is in the shape of a cylinder with both ends open and is sleeved on the wire reel, forming an annular space with the wire reel for accommodating the cable.

[0016] Furthermore, an avoidance groove is provided on the side wall of the protective shell. The avoidance groove communicates with the annular space and extends along the axial direction of the protective shell.

[0017] Along the axial direction of the protective shell, a first spiral groove is provided on the inner wall of the protective shell, and a second spiral groove is provided on the outer side wall of the wire reel. The second spiral groove and the first spiral groove enclose a spiral cavity adapted to the cable.

[0018] Furthermore, a wire threading hole is provided in the wall of the wire reel for threading the cable.

[0019] The wire threading hole has an inlet end and an outlet end. Among them, the inlet end extends to the rotor part, and the outlet end extends to one end of the avoidance groove far from the lower seat and is communicated with the annular space.

[0020] Furthermore, the charging pile cable protection device further includes a pressure ring and a second compression spring in the annular space.

[0021] The pressure ring is sleeved on the wire reel and is located between the outlet end and the inlet end.

[0022] The second compression spring is located between the pressure ring and the inlet end, and its two ends are respectively connected to the pressure ring and the protective shell.

[0023] Furthermore, a wire fixing device is provided on the wire reel, and the wire fixing device is used to fasten the cable at the outlet end to the wire reel.

[0024] Furthermore, a first plane extending along its axial direction is provided on the side surface of the guide post.

[0025] A second plane is provided on the inner wall of the sliding sleeve, and the second plane fits with the first plane.

[0026] Integrating the above technical solutions, the technical effects that can be achieved by the charging pile cable protection device provided by the present utility model are as follows:

[0027] In this charging pile cable protection device, the wire reel is in threaded cooperation with the sliding sleeve, and at the same time, the guide post restricts the sliding sleeve from rotating around its own axis. In this way, the combination of the wire reel, the sliding sleeve and the guide post is equivalent to a ball screw structure. When the wire reel rotates, the sliding sleeve slides on the guide post; when the sliding sleeve slides towards the first compression spring, the first compression spring is compressed. During the recovery process of the first compression spring, it drives the sliding sleeve to slide in the reverse direction and makes the wire reel rotate in the reverse direction.

[0028] Specifically, in the initial state, the cable is wound around the cable reel. When charging, the cable is pulled out through the charging gun, and the cable reel rotates driven by the cable, and the sliding sleeve compresses the first compression spring. After charging is completed, the charging gun is put back. Under the action of the restoring force of the first compression spring, the sliding sleeve drives the cable reel to reverse, winding the cable around the cable reel one by one to realize the winding of the cable.

[0029] It can be seen that compared with the prior art, the cable protection device of this charging pile can release the cable wound on the cable reel in the charging state, and can release the corresponding length of the cable according to the pulling distance of the charging gun. In the non-charging state, it can automatically wind up the released cable to avoid the cable touching the ground. Therefore, with this design, the situation of the cable rubbing against the ground is avoided, thereby protecting the cable and ensuring the safe use of the charging pile.

[0030] In a second aspect, the present invention provides a charging pile, including a main housing and the cable protection device of the charging pile;

[0031] The cable protection device of the charging pile is fixed to the main housing.

[0032] Further, the main housing has an inner cavity;

[0033] The upper seat and the lower seat of the fixing seat are respectively fixed to the top wall and the bottom wall of the inner cavity.

[0034] The beneficial effects of the charging pile provided by the present invention are as follows:

[0035] The charging pile provided by the present invention includes a cable protection device for the charging pile. Therefore, the technical advantages and effects achieved by this charging pile also include the technical advantages and effects achieved by the above-mentioned cable protection device for the charging pile, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0037] Figure 1 It is a schematic structural diagram of the cable protection device for the charging pile provided by the embodiment of the present invention;

[0038] Figure 2 It is an exploded view of the cable protection device for the charging pile provided by the embodiment of the present invention;

[0039] Figure 3 This is a cross-sectional view of the charging pile cable protection device provided by the embodiment of the present invention;

[0040] Figure 4 This is a schematic structural diagram of the wire reel provided by the embodiment of the present invention.

[0041] Icon: 100 - fixed seat; 110 - upper seat; 120 - lower seat;

[0042] 200 - wire reel; 210 - wire threading channel;

[0043] 300 - sliding sleeve; 400 - guiding column; 500 - first compression spring; 600 - electric slip ring;

[0044] 700 - protective shell; 710 - avoidance groove;

[0045] 800 - pressing ring; 900 - second compression spring. Detailed implementation manners

[0046] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0047] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention to be protected, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts fall within the scope of protection of the present invention.

[0048] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0049] After an electric vehicle is fully charged, the cable connected to the charging gun is usually randomly piled on the ground. When it is used again, due to the dragging by the user, the cable will rub against the ground, resulting in damage. Over time, the cable is prone to leakage.

[0050] In view of this, the present utility model provides a charging pile cable protection device, which includes a fixed seat 100, a wire reel 200, a sliding sleeve 300, a guiding column 400, and a first compression spring 500. The wire reel 200 is used for winding the cable and is rotatably connected to the fixed seat 100 so as to be rotatable about its own axis. The sliding sleeve 300 is located inside the wire reel 200 and is coaxially arranged with the wire reel 200, and the side wall thereof is in threaded cooperation with the inner wall of the wire reel 200. The guiding column 400 is fixed to the fixed seat 100 and axially penetrates through the sliding sleeve 300 along the axial direction of the sliding sleeve 300 to limit the sliding sleeve 300 from rotating about its own axis. The first compression spring 500 is sleeved on the guiding column 400, one end thereof is connected to the guiding column 400, and the other end is connected to the sliding sleeve 300.

[0051] In this charging pile cable protection device, the wire reel 200 is in threaded cooperation with the sliding sleeve 300, and at the same time, the guiding column 400 restricts the sliding sleeve 300 from rotating about its own axis. Thus, the combination of the wire reel 200, the sliding sleeve 300, and the guiding column 400 is equivalent to a ball screw structure. When the wire reel 200 rotates, the sliding sleeve 300 slides on the guiding column 400. When the sliding sleeve 300 slides towards the first compression spring 500, the first compression spring 500 is compressed. During the recovery process of the first compression spring 500, the sliding sleeve 300 is driven to slide in the reverse direction and the wire reel 200 rotates in the reverse direction.

[0052] Specifically, in the initial state, the cable is wound around the wire reel 200. During charging, when the charging gun pulls out the cable, the wire reel 200 rotates driven by the cable, and the sliding sleeve 300 compresses the first compression spring 500. After charging is completed, when the charging gun is put back, under the action of the restoring force of the first compression spring 500, the sliding sleeve 300 drives the wire reel 200 to rotate in the reverse direction, winding the cable around the wire reel 200 one by one to achieve the rewinding of the cable.

[0053] It can be seen that compared with the prior art, this charging pile cable protection device can release the cable wound around the wire reel 200 in the charging state, and can release the corresponding length of the cable according to the pulling distance of the charging gun. In the non-charging state, it can automatically rewind the released cable to avoid the cable touching the ground. Thus, with this design, the situation of the cable rubbing against the ground is avoided, thereby playing a protective role for the cable and ensuring the safe use of the charging pile.

[0054] The following combines Figures 1 to 4 to elaborate in detail on the structure and shape of the charging pile cable protection device provided in this embodiment:

[0055] In this embodiment, with reference to Figures 1 to 3, the fixed base 100 includes an upper base 110 and a lower base 120, and the upper base 110 and the lower base 120 are spaced apart; one end of the wire reel 200 is rotatably engaged with the upper base 110, and the other end is rotatably engaged with the lower base 120; the charging pile cable protection device further includes an electric slip ring 600, the rotor part of the electric slip ring 600 is fixed to the wire reel 200, and the stator part is fixed to the lower base 120; the rotor part is used for electrically connecting with one end of the cable away from the charging gun, and the stator part is used for electrically connecting with the power supply.

[0056] Specifically, the upper end of the wire reel 200 is connected to the upper base 110 through a bearing, and the lower end is also connected to the lower base 120 through a bearing; the guide post 400 is fixed to the upper base 110, and its axis coincides with the rotation axis of the rotor part. When the wire reel 200 rotates, the rotor part rotates synchronously with the wire reel 200 around the same axis.

[0057] With the above design, one end of the cable away from the charging gun, that is, the power connection end, is fixed to the wire reel 200 and can rotate synchronously with the wire reel 200. Compared with directly connecting the power connection end to the power supply, this design avoids the wire reel 200 generating a pulling force on the power connection end under the condition of cable release, ensuring the effectiveness of the electrical connection between the cable and the power supply.

[0058] In this embodiment, referring to Figures 1 to 3 , a protective shell 700 is sleeved outside the wire reel 200. The protective shell 700 is in the shape of a cylinder with both ends open. It forms an annular space with the wire reel 200, and its upper end is fixedly connected to the upper base 110, and the lower end is fixedly connected to the lower base 120. When winding the cable, as the first compression spring 500 recovers, the cable is received in the annular space.

[0059] Furthermore, referring to Figure 1 and Figure 2 , an avoidance groove 710 is provided on the side wall of the protective shell 700. The avoidance groove 710 communicates with the annular space and extends along the axial direction of the protective shell 700; along the axial direction of the protective shell 700, a first spiral groove is provided on the inner wall of the protective shell 700, and a second spiral groove is provided on the outer side wall of the wire reel 200. The second spiral groove and the first spiral groove enclose a spiral cavity adapted to the cable; optionally, the cross-section of the spiral cavity is circular and adapted to the cable.

[0060] Continuing from the above, in combination with Figure 3 and Figure 4 as shown, a wire threading hole 210 is provided in the wall of the wire reel 200 for threading the cable; the lower end and the upper end of the wire threading hole 210 are respectively the inlet end and the outlet end. Among them, the inlet end extends to the position of the rotor part so that the cable passing through this end is electrically connected to the rotor part, and the outlet end extends upward to the upper end of the avoidance groove 710 and is communicated with the annular space.

[0061] With the above design, as the cable rotates, the cable will be wound around the reel 200 from top to bottom and stored in the spiral cavity, thus avoiding the accumulation of the cable at a certain place and enabling the cable to be wound in sequence. Additionally, it should be supplemented here that, optionally, the outlet end extends to the lower end of the avoidance groove 710 and is communicatively connected to the annular space.

[0062] Furthermore, a cable fixing device is provided on the reel 200. The cable fixing device can be a wire clip, a cable clamp, etc., to fasten the cable at the outlet end to the reel 200. With such a design, in the case of excessive pulling of the cable, the tension on the power connection end of the cable can be blocked in advance, ensuring an effective electrical connection between the power connection end and the rotor part.

[0063] In this embodiment, referring to Figure 2 and Figure 3 , the charging pile cable protection device further includes a pressure ring 800 and a second compression spring 900 located in the annular space; the pressure ring 800 is sleeved on the reel 200 and is located below the outlet end; the second compression spring 900 is sleeved on the reel 200, its upper end is fixedly connected to the bottom surface of the pressure ring 800, and its lower end is connected to a boss on the inner wall of the protective shell 700.

[0064] After the cable is released, taking Figure 3 as an example, at this time, under the action of the second compression spring 900, the pressure ring 800 approaches the outlet end; as the first compression spring 500 recovers, the reel 200 rotates to store the cable in the spiral cavity above the pressure ring 800; as the cable continues to wind, a downward pressure is exerted on the pressure ring 800, compressing the second compression spring 900. For each turn of the cable winding, the pressure ring 800 correspondingly moves downward by a certain distance until the cable winding is completed and the pressure ring 800 stops moving.

[0065] The advantage of the above design is that when winding the cable, it avoids the cable in the annular space from sagging under the action of gravity, enables the cable to effectively adhere to the spiral groove surface, and ensures the orderly winding of the cable.

[0066] Regarding the circumferential limit of the guide post 400 on the sliding sleeve 300, optionally, a first plane extending along its axial direction is provided on the side surface of the guide post 400; a second plane is provided on the inner wall of the sliding sleeve 300, and the second plane fits with the first plane. With such a design, the guide post 400 can prevent the sliding sleeve 300 from rotating around its axis, enabling the sliding sleeve 300 to only slide up and down on the guide post 400.

[0067] The present utility model also provides a charging pile, which includes a main housing and a charging pile cable protection device.

[0068] Specifically, the main housing is the housing outside the charging pile, which is provided with an inner cavity for accommodating the cable protection device of the charging pile. The upper seat 110 and the lower seat 120 of the fixing seat 100 are respectively fixed to the top wall and the bottom wall of the inner cavity; an opening is provided on the side wall of the main housing, and the opening communicates with the inner cavity. Optionally, a door body is hinged on the main housing, and by opening and closing the door body, the opening is correspondingly opened and closed. In addition, a wire passing hole is provided on the door body for the cable connecting the charging gun to pass through.

[0069] With the above design, it is possible to avoid damage to the cable protection device of the charging pile due to abnormal weather or accidental accidents, thereby playing a protective role for the entire cable protection device of the charging pile and ensuring the smooth retraction and extension of the cable of the charging pile cable protection device.

[0070] In addition, since the charging pile includes the cable protection device of the charging pile, the technical advantages and effects achieved by the charging pile also include the technical advantages and effects achieved by the above-mentioned cable protection device of the charging pile, which will not be elaborated here.

[0071] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A charging pile cable protection device, characterized in that: include: A fixed seat (100), a winding drum (200), a sliding sleeve (300), a guide column (400) and a first compression spring (500); The winding drum (200) is used for winding the cable and is rotatably connected to the fixing seat (100) so as to be rotatable around its own axis; The sliding sleeve (300) is located inside the winding drum (200) and is coaxially arranged with the winding drum (200), and its side wall is threadably matched with the inner wall of the winding drum (200); The guide column (400) is fixed to the fixing seat (100) and is arranged in the sliding sleeve (300) along the axial direction of the sliding sleeve (300) to limit the sliding sleeve (300) from rotating around its own axis. The first compression spring (500) is sleeved on the guide column (400), one end of which is connected to the guide column (400) and the other end of which is connected to the sliding sleeve (300).

2. The charging pile cable protection device according to claim 1, characterized in that: The fixing seat (100) comprises an upper seat (110) and a lower seat (120), wherein the upper seat (110) and the lower seat (120) are spaced apart from each other; One end of the winding drum (200) is rotatably matched with the upper seat (110), and the other end is rotatably matched with the lower seat (120); The charging pile cable protection device further comprises an electric slip ring (600), wherein a rotor portion of the electric slip ring (600) is fixed to the winding drum (200), and a stator portion is fixed to the lower seat (120); The rotor part is used to be electrically connected to an end of the cable away from the charging gun, and the stator part is used to be electrically connected to a power source.

3. The charging pile cable protection device according to claim 2, characterized in that: A protective shell (700) is fixedly connected between the upper seat (110) and the lower seat (120); The protective shell (700) is in the shape of a tube with two ends open, and is sleeved on the winding drum (200), forming an annular space for accommodating the cable together with the winding drum (200).

4. The charging pile cable protection device according to claim 3, characterized in that: A relief groove (710) is provided on the side wall of the protective shell (700), the relief groove (710) is communicated with the annulus and extends along the axial direction of the protective shell (700); A first spiral groove is provided on the inner wall of the protective shell (700) along the axial direction of the protective shell (700), and a second spiral groove is provided on the outer wall of the winding drum (200), and the second spiral groove and the first spiral groove enclose a spiral wire cavity adapted to the cable.

5. The charging pile cable protection device according to claim 4, characterized in that: A wire threading hole (210) is provided in the wall of the winding drum (200), and the wire threading hole (210) is used for threading cables; The wire threading channel (210) has an inlet end and an outlet end, wherein the inlet end extends to the rotor portion, and the outlet end extends to an end of the avoidance groove (710) away from the lower seat (120) and is connected to the annulus.

6. The charging pile cable protection device according to claim 5, characterized in that: The charging pile cable protection device also includes a pressure ring (800) and a second compression spring (900) located in the annular space; The pressure ring (800) is sleeved on the winding drum (200) and is located between the outlet end and the inlet end; The second compression spring (900) is located between the pressure ring (800) and the line inlet, and its two ends are respectively connected to the pressure ring (800) and the protective shell (700).

7. The charging pile cable protection device according to claim 5, characterized in that: The cable reel (200) is provided with a cable fixer, and the cable fixer is used to fasten the cable at the outlet end to the cable reel (200).

8. The charging pile cable protection device according to claim 1, characterized in that: The side surface of the guide column (400) is provided with a first plane extending along its axial direction; The inner wall of the sliding sleeve (300) is provided with a second plane, and the second plane is in contact with the first plane.

9. A charging pile, characterized in that: It comprises a main housing and a charging pile cable protection device as claimed in any one of claims 1 to 8; The charging pile cable protection device is fixed to the main shell.

10. The charging pile according to claim 9, characterized in that: The main housing has an inner cavity; The upper seat (110) and the lower seat (120) of the fixing seat (100) are respectively fixed to the top wall and the bottom wall of the inner cavity.

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